#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/resourcevar.h>
#include <sys/proc_internal.h>
#include <sys/kauth.h>
#include <sys/mount_internal.h>
#include <sys/malloc.h>
#include <sys/kpi_mbuf.h>
#include <sys/conf.h>
#include <sys/vnode_internal.h>
#include <sys/dirent.h>
#include <sys/fcntl.h>
#include <sys/lockf.h>
#include <sys/ubc_internal.h>
#include <sys/attr.h>
#include <sys/signalvar.h>
#include <sys/uio_internal.h>
#include <sys/xattr.h>
#include <sys/paths.h>
#include <vfs/vfs_support.h>
#include <sys/vm.h>
#include <sys/time.h>
#include <kern/clock.h>
#include <libkern/OSAtomic.h>
#include <miscfs/fifofs/fifo.h>
#include <miscfs/specfs/specdev.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
#include <nfs/nfs_gss.h>
#include <nfs/nfsmount.h>
#include <nfs/nfs_lock.h>
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <vm/vm_kern.h>
#include <kern/task.h>
#include <kern/sched_prim.h>
int
nfs4_access_rpc(nfsnode_t np, u_int32_t *access, int rpcflags, vfs_context_t ctx)
{
int error = 0, lockerror = ENOENT, status, numops, slot;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct timeval now;
uint32_t access_result = 0, supported = 0, missing;
struct nfsmount *nmp = NFSTONMP(np);
int nfsvers = nmp->nm_vers;
uid_t uid;
struct nfsreq_secinfo_args si;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (0);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 17 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "access", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_ACCESS);
nfsm_chain_add_32(error, &nmreq, *access);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx),
&si, rpcflags, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_ACCESS);
nfsm_chain_get_32(error, &nmrep, supported);
nfsm_chain_get_32(error, &nmrep, access_result);
nfsmout_if(error);
if ((missing = (*access & ~supported))) {
if (missing & NFS_ACCESS_DELETE) {
access_result |= NFS_ACCESS_DELETE;
}
}
if (nfs_access_dotzfs) {
vnode_t dvp = NULLVP;
if (np->n_flag & NISDOTZFSCHILD)
access_result |= (NFS_ACCESS_MODIFY|NFS_ACCESS_EXTEND|NFS_ACCESS_DELETE);
else if (((dvp = vnode_getparent(NFSTOV(np))) != NULLVP) && (VTONFS(dvp)->n_flag & NISDOTZFSCHILD))
access_result |= NFS_ACCESS_DELETE;
if (dvp != NULLVP)
vnode_put(dvp);
}
if (nfs_access_delete && (*access & NFS_ACCESS_DELETE) && !(access_result & NFS_ACCESS_DELETE))
access_result |= NFS_ACCESS_DELETE;
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout_if(error);
if (nfs_mount_gone(nmp)) {
error = ENXIO;
}
nfsmout_if(error);
if (auth_is_kerberized(np->n_auth) || auth_is_kerberized(nmp->nm_auth)) {
uid = nfs_cred_getasid2uid(vfs_context_ucred(ctx));
} else {
uid = kauth_cred_getuid(vfs_context_ucred(ctx));
}
slot = nfs_node_access_slot(np, uid, 1);
np->n_accessuid[slot] = uid;
microuptime(&now);
np->n_accessstamp[slot] = now.tv_sec;
np->n_access[slot] = access_result;
*access = np->n_access[slot];
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_getattr_rpc(
nfsnode_t np,
mount_t mp,
u_char *fhp,
size_t fhsize,
int flags,
vfs_context_t ctx,
struct nfs_vattr *nvap,
u_int64_t *xidp)
{
struct nfsmount *nmp = mp ? VFSTONFS(mp) : NFSTONMP(np);
int error = 0, status, nfsvers, numops, rpcflags = 0, acls;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
acls = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL);
if (np && (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)) {
nfs4_default_attrs_for_referral_trigger(VTONFS(np->n_parent), NULL, 0, nvap, NULL);
return (0);
}
if (flags & NGA_MONITOR)
rpcflags = R_RECOVER;
if (flags & NGA_SOFT)
rpcflags |= R_SOFT;
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 2;
nfsm_chain_build_alloc_init(error, &nmreq, 15 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "getattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, fhp, fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
if ((flags & NGA_ACL) && acls)
NFS_BITMAP_SET(bitmap, NFS_FATTR_ACL);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, mp, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx),
NULL, rpcflags, &nmrep, xidp, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
nfsmout_if(error);
if ((flags & NGA_ACL) && acls && !NFS_BITMAP_ISSET(nvap->nva_bitmap, NFS_FATTR_ACL)) {
NFS_BITMAP_SET(nvap->nva_bitmap, NFS_FATTR_ACL);
nvap->nva_acl = NULL;
}
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_readlink_rpc(nfsnode_t np, char *buf, uint32_t *buflenp, vfs_context_t ctx)
{
struct nfsmount *nmp;
int error = 0, lockerror = ENOENT, status, numops;
uint32_t len = 0;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "readlink", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READLINK);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READLINK);
nfsm_chain_get_32(error, &nmrep, len);
nfsmout_if(error);
if (len >= *buflenp) {
if (np->n_size && (np->n_size < *buflenp))
len = np->n_size;
else
len = *buflenp - 1;
}
nfsm_chain_get_opaque(error, &nmrep, len, buf);
if (!error)
*buflenp = len;
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_read_rpc_async(
nfsnode_t np,
off_t offset,
size_t len,
thread_t thd,
kauth_cred_t cred,
struct nfsreq_cbinfo *cb,
struct nfsreq **reqp)
{
struct nfsmount *nmp;
int error = 0, nfsvers, numops;
nfs_stateid stateid;
struct nfsm_chain nmreq;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 22 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "read", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READ);
nfs_get_stateid(np, thd, cred, &stateid);
nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_64(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, len);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs4_read_rpc_async_finish(
nfsnode_t np,
struct nfsreq *req,
uio_t uio,
size_t *lenp,
int *eofp)
{
struct nfsmount *nmp;
int error = 0, lockerror, nfsvers, numops, status, eof = 0;
size_t retlen = 0;
u_int64_t xid;
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp)) {
nfs_request_async_cancel(req);
return (ENXIO);
}
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmrep);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
if (error == EINPROGRESS)
return (error);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READ);
nfsm_chain_get_32(error, &nmrep, eof);
nfsm_chain_get_32(error, &nmrep, retlen);
if (!error) {
*lenp = MIN(retlen, *lenp);
error = nfsm_chain_get_uio(&nmrep, *lenp, uio);
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (!lockerror)
nfs_node_unlock(np);
if (eofp) {
if (!eof && !retlen)
eof = 1;
*eofp = eof;
}
nfsm_chain_cleanup(&nmrep);
if (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)
microuptime(&np->n_lastio);
return (error);
}
int
nfs4_write_rpc_async(
nfsnode_t np,
uio_t uio,
size_t len,
thread_t thd,
kauth_cred_t cred,
int iomode,
struct nfsreq_cbinfo *cb,
struct nfsreq **reqp)
{
struct nfsmount *nmp;
mount_t mp;
int error = 0, nfsvers, numops;
nfs_stateid stateid;
struct nfsm_chain nmreq;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if ((iomode != NFS_WRITE_UNSTABLE) && nfs_allow_async &&
((mp = NFSTOMP(np))) && (vfs_flags(mp) & MNT_ASYNC))
iomode = NFS_WRITE_UNSTABLE;
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 25 * NFSX_UNSIGNED + len);
nfsm_chain_add_compound_header(error, &nmreq, "write", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_WRITE);
nfs_get_stateid(np, thd, cred, &stateid);
nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_64(error, &nmreq, uio_offset(uio));
nfsm_chain_add_32(error, &nmreq, iomode);
nfsm_chain_add_32(error, &nmreq, len);
if (!error)
error = nfsm_chain_add_uio(&nmreq, uio, len);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs4_write_rpc_async_finish(
nfsnode_t np,
struct nfsreq *req,
int *iomodep,
size_t *rlenp,
uint64_t *wverfp)
{
struct nfsmount *nmp;
int error = 0, lockerror = ENOENT, nfsvers, numops, status;
int committed = NFS_WRITE_FILESYNC;
size_t rlen = 0;
u_int64_t xid, wverf;
mount_t mp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp)) {
nfs_request_async_cancel(req);
return (ENXIO);
}
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmrep);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
if (error == EINPROGRESS)
return (error);
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
error = ENXIO;
if (!error && (lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_WRITE);
nfsm_chain_get_32(error, &nmrep, rlen);
nfsmout_if(error);
*rlenp = rlen;
if (rlen <= 0)
error = NFSERR_IO;
nfsm_chain_get_32(error, &nmrep, committed);
nfsm_chain_get_64(error, &nmrep, wverf);
nfsmout_if(error);
if (wverfp)
*wverfp = wverf;
lck_mtx_lock(&nmp->nm_lock);
if (!(nmp->nm_state & NFSSTA_HASWRITEVERF)) {
nmp->nm_verf = wverf;
nmp->nm_state |= NFSSTA_HASWRITEVERF;
} else if (nmp->nm_verf != wverf) {
nmp->nm_verf = wverf;
}
lck_mtx_unlock(&nmp->nm_lock);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmrep);
if ((committed != NFS_WRITE_FILESYNC) && nfs_allow_async &&
((mp = NFSTOMP(np))) && (vfs_flags(mp) & MNT_ASYNC))
committed = NFS_WRITE_FILESYNC;
*iomodep = committed;
if (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)
microuptime(&np->n_lastio);
return (error);
}
int
nfs4_remove_rpc(
nfsnode_t dnp,
char *name,
int namelen,
thread_t thd,
kauth_cred_t cred)
{
int error = 0, lockerror = ENOENT, remove_error = 0, status;
struct nfsmount *nmp;
int nfsvers, numops;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
restart:
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 17 * NFSX_UNSIGNED + namelen);
nfsm_chain_add_compound_header(error, &nmreq, "remove", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_REMOVE);
nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, 0, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_REMOVE);
remove_error = error;
nfsm_chain_check_change_info(error, &nmrep, dnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
if (error && !lockerror)
NATTRINVALIDATE(dnp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
nfs_node_unlock(dnp);
}
if (error == NFSERR_GRACE) {
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
goto restart;
}
return (remove_error);
}
int
nfs4_rename_rpc(
nfsnode_t fdnp,
char *fnameptr,
int fnamelen,
nfsnode_t tdnp,
char *tnameptr,
int tnamelen,
vfs_context_t ctx)
{
int error = 0, lockerror = ENOENT, status, nfsvers, numops;
struct nfsmount *nmp;
u_int64_t xid, savedxid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(fdnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (fdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if (tdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, fdnp, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 7;
nfsm_chain_build_alloc_init(error, &nmreq, 30 * NFSX_UNSIGNED + fnamelen + tnamelen);
nfsm_chain_add_compound_header(error, &nmreq, "rename", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, fdnp->n_fhp, fdnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RENAME);
nfsm_chain_add_name(error, &nmreq, fnameptr, fnamelen, nmp);
nfsm_chain_add_name(error, &nmreq, tnameptr, tnamelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, tdnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, fdnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(fdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock2(fdnp, tdnp)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_RENAME);
nfsm_chain_check_change_info(error, &nmrep, fdnp);
nfsm_chain_check_change_info(error, &nmrep, tdnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
savedxid = xid;
nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, &xid);
if (error && !lockerror)
NATTRINVALIDATE(tdnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
xid = savedxid;
nfsm_chain_loadattr(error, &nmrep, fdnp, nfsvers, &xid);
if (error && !lockerror)
NATTRINVALIDATE(fdnp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
fdnp->n_flag |= NMODIFIED;
tdnp->n_flag |= NMODIFIED;
nfs_node_unlock2(fdnp, tdnp);
}
return (error);
}
int
nfs4_readdir_rpc(nfsnode_t dnp, struct nfsbuf *bp, vfs_context_t ctx)
{
struct nfsmount *nmp;
int error = 0, lockerror, nfsvers, namedattr, rdirplus, bigcookies, numops;
int i, status, more_entries = 1, eof, bp_dropped = 0;
uint32_t nmreaddirsize, nmrsize;
uint32_t namlen, skiplen, fhlen, xlen, attrlen, reclen, space_free, space_needed;
uint64_t cookie, lastcookie, xid, savedxid;
struct nfsm_chain nmreq, nmrep, nmrepsave;
fhandle_t fh;
struct nfs_vattr nvattr, *nvattrp;
struct nfs_dir_buf_header *ndbhp;
struct direntry *dp;
char *padstart, padlen;
const char *tag;
uint32_t entry_attrs[NFS_ATTR_BITMAP_LEN];
struct timeval now;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
nmreaddirsize = nmp->nm_readdirsize;
nmrsize = nmp->nm_rsize;
bigcookies = nmp->nm_state & NFSSTA_BIGCOOKIES;
namedattr = (dnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) ? 1 : 0;
rdirplus = (NMFLAG(nmp, RDIRPLUS) || namedattr) ? 1 : 0;
if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
if (rdirplus) {
tag = "readdirplus";
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, entry_attrs);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_FILEHANDLE);
} else {
tag = "readdir";
NFS_CLEAR_ATTRIBUTES(entry_attrs);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_TYPE);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_FILEID);
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_MOUNTED_ON_FILEID);
}
NFS_BITMAP_SET(entry_attrs, NFS_FATTR_RDATTR_ERROR);
if ((lockerror = nfs_node_lock(dnp)))
return (lockerror);
ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
if (ndbhp->ndbh_count) {
for (i=0; i < ndbhp->ndbh_count-1; i++)
dp = NFS_DIRENTRY_NEXT(dp);
cookie = dp->d_seekoff;
dp = NFS_DIRENTRY_NEXT(dp);
} else {
cookie = bp->nb_lblkno;
OSAddAtomic64(1, &nfsstats.readdir_bios);
}
lastcookie = cookie;
if (((bp->nb_lblkno == 0) && (ndbhp->ndbh_count == 0)) &&
!(dnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR)) {
fh.fh_len = 0;
fhlen = rdirplus ? fh.fh_len + 1 : 0;
xlen = rdirplus ? (fhlen + sizeof(time_t)) : 0;
namlen = 1;
reclen = NFS_DIRENTRY_LEN(namlen + xlen);
if (xlen)
bzero(&dp->d_name[namlen+1], xlen);
dp->d_namlen = namlen;
strlcpy(dp->d_name, ".", namlen+1);
dp->d_fileno = dnp->n_vattr.nva_fileid;
dp->d_type = DT_DIR;
dp->d_reclen = reclen;
dp->d_seekoff = 1;
padstart = dp->d_name + dp->d_namlen + 1 + xlen;
dp = NFS_DIRENTRY_NEXT(dp);
padlen = (char*)dp - padstart;
if (padlen > 0)
bzero(padstart, padlen);
if (rdirplus)
bzero(NFS_DIR_BUF_NVATTR(bp, 0), sizeof(struct nfs_vattr));
namlen = 2;
reclen = NFS_DIRENTRY_LEN(namlen + xlen);
if (xlen)
bzero(&dp->d_name[namlen+1], xlen);
dp->d_namlen = namlen;
strlcpy(dp->d_name, "..", namlen+1);
if (dnp->n_parent)
dp->d_fileno = VTONFS(dnp->n_parent)->n_vattr.nva_fileid;
else
dp->d_fileno = dnp->n_vattr.nva_fileid;
dp->d_type = DT_DIR;
dp->d_reclen = reclen;
dp->d_seekoff = 2;
padstart = dp->d_name + dp->d_namlen + 1 + xlen;
dp = NFS_DIRENTRY_NEXT(dp);
padlen = (char*)dp - padstart;
if (padlen > 0)
bzero(padstart, padlen);
if (rdirplus)
bzero(NFS_DIR_BUF_NVATTR(bp, 1), sizeof(struct nfs_vattr));
ndbhp->ndbh_entry_end = (char*)dp - bp->nb_data;
ndbhp->ndbh_count = 2;
}
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
while (nfs_dir_buf_freespace(bp, rdirplus) && !(ndbhp->ndbh_flags & NDB_FULL)) {
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, tag, nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READDIR);
nfsm_chain_add_64(error, &nmreq, (cookie <= 2) ? 0 : cookie);
nfsm_chain_add_64(error, &nmreq, dnp->n_cookieverf);
nfsm_chain_add_32(error, &nmreq, nmreaddirsize);
nfsm_chain_add_32(error, &nmreq, nmrsize);
nfsm_chain_add_bitmap_supported(error, &nmreq, entry_attrs, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfs_node_unlock(dnp);
nfsmout_if(error);
error = nfs_request(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
savedxid = xid;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READDIR);
nfsm_chain_get_64(error, &nmrep, dnp->n_cookieverf);
nfsm_chain_get_32(error, &nmrep, more_entries);
if (!lockerror) {
nfs_node_unlock(dnp);
lockerror = ENOENT;
}
nfsmout_if(error);
if (rdirplus)
microuptime(&now);
while (more_entries) {
nfsm_chain_get_64(error, &nmrep, cookie);
nfsm_chain_get_32(error, &nmrep, namlen);
nfsmout_if(error);
if (!bigcookies && (cookie >> 32) && (nmp == NFSTONMP(dnp))) {
lck_mtx_lock(&nmp->nm_lock);
nmp->nm_state |= NFSSTA_BIGCOOKIES;
lck_mtx_unlock(&nmp->nm_lock);
bigcookies = 1;
}
if (namlen <= 0) {
error = EBADRPC;
goto nfsmout;
}
if (namlen > (sizeof(dp->d_name)-1)) {
skiplen = namlen - sizeof(dp->d_name) + 1;
namlen = sizeof(dp->d_name) - 1;
} else {
skiplen = 0;
}
fhlen = rdirplus ? (1 + dnp->n_fhsize) : 0;
xlen = rdirplus ? (fhlen + sizeof(time_t)) : 0;
attrlen = rdirplus ? sizeof(struct nfs_vattr) : 0;
reclen = NFS_DIRENTRY_LEN(namlen + xlen);
space_needed = reclen + attrlen;
space_free = nfs_dir_buf_freespace(bp, rdirplus);
if (space_needed > space_free) {
nextbuffer:
ndbhp->ndbh_flags |= NDB_FULL;
nfs_buf_release(bp, 0);
bp_dropped = 1;
bp = NULL;
error = nfs_buf_get(dnp, lastcookie, NFS_DIRBLKSIZ, vfs_context_thread(ctx), NBLK_READ, &bp);
nfsmout_if(error);
ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
ndbhp->ndbh_flags = 0;
ndbhp->ndbh_count = 0;
ndbhp->ndbh_entry_end = sizeof(*ndbhp);
ndbhp->ndbh_ncgen = dnp->n_ncgen;
space_free = nfs_dir_buf_freespace(bp, rdirplus);
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
OSAddAtomic64(1, &nfsstats.readdir_bios);
}
nmrepsave = nmrep;
dp->d_fileno = cookie;
dp->d_seekoff = cookie;
dp->d_namlen = namlen;
dp->d_reclen = reclen;
dp->d_type = DT_UNKNOWN;
nfsm_chain_get_opaque(error, &nmrep, namlen, dp->d_name);
nfsmout_if(error);
dp->d_name[namlen] = '\0';
if (skiplen)
nfsm_chain_adv(error, &nmrep,
nfsm_rndup(namlen + skiplen) - nfsm_rndup(namlen));
nfsmout_if(error);
nvattrp = rdirplus ? NFS_DIR_BUF_NVATTR(bp, ndbhp->ndbh_count) : &nvattr;
error = nfs4_parsefattr(&nmrep, NULL, nvattrp, &fh, NULL, NULL);
if (!error && NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_ACL)) {
NFS_BITMAP_CLR(nvattrp->nva_bitmap, NFS_FATTR_ACL);
if (nvattrp->nva_acl) {
kauth_acl_free(nvattrp->nva_acl);
nvattrp->nva_acl = NULL;
}
}
if (error && NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_RDATTR_ERROR)) {
if ((error == NFSERR_MOVED) || (error == NFSERR_INVAL)) {
nfs4_default_attrs_for_referral_trigger(dnp, dp->d_name, namlen, nvattrp, &fh);
}
error = 0;
}
nfsm_chain_get_32(error, &nmrep, more_entries);
nfsmout_if(error);
if (((dp->d_name[0] == '.') && ((namlen == 1) || ((namlen == 2) && (dp->d_name[1] == '.')))) ||
(namedattr && (namlen == 11) && (!strcmp(dp->d_name, "SUNWattr_ro") || !strcmp(dp->d_name, "SUNWattr_rw")))) {
lastcookie = cookie;
continue;
}
if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_TYPE))
dp->d_type = IFTODT(VTTOIF(nvattrp->nva_type));
if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_FILEID))
dp->d_fileno = nvattrp->nva_fileid;
if (rdirplus) {
nvattrp->nva_fileid = savedxid;
if (NFS_BITMAP_ISSET(nvattrp->nva_bitmap, NFS_FATTR_FILEHANDLE)) {
fhlen = fh.fh_len + 1;
xlen = fhlen + sizeof(time_t);
reclen = NFS_DIRENTRY_LEN(namlen + xlen);
space_needed = reclen + attrlen;
if (space_needed > space_free) {
nmrep = nmrepsave;
goto nextbuffer;
}
dp->d_name[dp->d_namlen+1] = fh.fh_len;
bcopy(fh.fh_data, &dp->d_name[dp->d_namlen+2], fh.fh_len);
} else {
fh.fh_len = 0;
fhlen = fh.fh_len + 1;
xlen = fhlen + sizeof(time_t);
reclen = NFS_DIRENTRY_LEN(namlen + xlen);
bzero(&dp->d_name[dp->d_namlen+1], fhlen);
}
*(time_t*)(&dp->d_name[dp->d_namlen+1+fhlen]) = now.tv_sec;
dp->d_reclen = reclen;
}
padstart = dp->d_name + dp->d_namlen + 1 + xlen;
ndbhp->ndbh_count++;
lastcookie = cookie;
dp = NFS_DIRENTRY_NEXT(dp);
ndbhp->ndbh_entry_end = (char*)dp - bp->nb_data;
padlen = (char*)dp - padstart;
if (padlen > 0)
bzero(padstart, padlen);
}
nfsm_chain_get_32(error, &nmrep, eof);
nfsmout_if(error);
if (eof) {
ndbhp->ndbh_flags |= (NDB_FULL|NDB_EOF);
nfs_node_lock_force(dnp);
dnp->n_eofcookie = lastcookie;
nfs_node_unlock(dnp);
} else {
more_entries = 1;
}
if (bp_dropped) {
nfs_buf_release(bp, 0);
bp = NULL;
break;
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsmout_if(error);
nfsm_chain_cleanup(&nmrep);
nfsm_chain_null(&nmreq);
}
nfsmout:
if (bp_dropped && bp)
nfs_buf_release(bp, 0);
if (!lockerror)
nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (bp_dropped ? NFSERR_DIRBUFDROPPED : error);
}
int
nfs4_lookup_rpc_async(
nfsnode_t dnp,
char *name,
int namelen,
vfs_context_t ctx,
struct nfsreq **reqp)
{
int error = 0, isdotdot = 0, nfsvers, numops;
struct nfsm_chain nmreq;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfsmount *nmp;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if ((name[0] == '.') && (name[1] == '.') && (namelen == 2)) {
isdotdot = 1;
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
} else {
NFSREQ_SECINFO_SET(&si, dnp, dnp->n_fhp, dnp->n_fhsize, name, namelen);
}
nfsm_chain_null(&nmreq);
numops = 5;
nfsm_chain_build_alloc_init(error, &nmreq, 20 * NFSX_UNSIGNED + namelen);
nfsm_chain_add_compound_header(error, &nmreq, "lookup", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
numops--;
if (isdotdot) {
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUPP);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
}
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
if ((dnp->n_flag & NISDOTZFS) && !isdotdot)
NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
if ((dnp->n_flag & NISDOTZFSCHILD) && isdotdot)
NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
if (((namelen == 4) && (name[0] == '.') && (name[1] == 'z') && (name[2] == 'f') && (name[3] == 's')))
NFS_BITMAP_CLR(bitmap, NFS_FATTR_NAMED_ATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, NULL);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs4_lookup_rpc_async_finish(
nfsnode_t dnp,
char *name,
int namelen,
vfs_context_t ctx,
struct nfsreq *req,
u_int64_t *xidp,
fhandle_t *fhp,
struct nfs_vattr *nvap)
{
int error = 0, lockerror = ENOENT, status, nfsvers, numops, isdotdot = 0;
uint32_t op = NFS_OP_LOOKUP;
u_int64_t xid;
struct nfsmount *nmp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(dnp);
if (nmp == NULL)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((name[0] == '.') && (name[1] == '.') && (namelen == 2))
isdotdot = 1;
nfsm_chain_null(&nmrep);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
if (xidp)
*xidp = xid;
nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
nfsm_chain_op_check(error, &nmrep, (isdotdot ? NFS_OP_LOOKUPP : NFS_OP_LOOKUP));
nfsmout_if(error || !fhp || !nvap);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETFH);
nfsm_chain_get_32(error, &nmrep, fhp->fh_len);
nfsm_chain_get_opaque(error, &nmrep, fhp->fh_len, fhp->fh_data);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
if ((error == NFSERR_MOVED) || (error == NFSERR_INVAL)) {
nfs4_default_attrs_for_referral_trigger(dnp, name, namelen, nvap, fhp);
error = 0;
} else {
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
}
nfsmout:
if (!lockerror)
nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmrep);
if (!error && (op == NFS_OP_LOOKUP) && (nmp->nm_state & NFSSTA_NEEDSECINFO)) {
struct nfs_sec sec;
sec.count = NX_MAX_SEC_FLAVORS;
error = nfs4_secinfo_rpc(nmp, &req->r_secinfo, vfs_context_ucred(ctx), sec.flavors, &sec.count);
if (error == NFSERR_OP_ILLEGAL)
error = 0;
if (!error) {
lck_mtx_lock(&nmp->nm_lock);
if (sec.count)
nmp->nm_auth = sec.flavors[0];
nmp->nm_state &= ~NFSSTA_NEEDSECINFO;
lck_mtx_unlock(&nmp->nm_lock);
}
}
return (error);
}
int
nfs4_commit_rpc(
nfsnode_t np,
uint64_t offset,
uint64_t count,
kauth_cred_t cred,
uint64_t wverf)
{
struct nfsmount *nmp;
int error = 0, lockerror, status, nfsvers, numops;
u_int64_t xid, newwverf;
uint32_t count32;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
FSDBG(521, np, offset, count, nmp ? nmp->nm_state : 0);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if (!(nmp->nm_state & NFSSTA_HASWRITEVERF))
return (0);
nfsvers = nmp->nm_vers;
if (count > UINT32_MAX)
count32 = 0;
else
count32 = count;
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 19 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "commit", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_COMMIT);
nfsm_chain_add_64(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, count32);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
current_thread(), cred, &si, 0, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_COMMIT);
nfsm_chain_get_64(error, &nmrep, newwverf);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (!lockerror)
nfs_node_unlock(np);
nfsmout_if(error);
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_verf != newwverf)
nmp->nm_verf = newwverf;
if (wverf != newwverf)
error = NFSERR_STALEWRITEVERF;
lck_mtx_unlock(&nmp->nm_lock);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_pathconf_rpc(
nfsnode_t np,
struct nfs_fsattr *nfsap,
vfs_context_t ctx)
{
u_int64_t xid;
int error = 0, lockerror, status, nfsvers, numops;
struct nfsm_chain nmreq, nmrep;
struct nfsmount *nmp = NFSTONMP(np);
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
struct nfs_vattr nvattr;
struct nfsreq_secinfo_args si;
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
NVATTR_INIT(&nvattr);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 2;
nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "pathconf", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_MAXLINK);
NFS_BITMAP_SET(bitmap, NFS_FATTR_MAXNAME);
NFS_BITMAP_SET(bitmap, NFS_FATTR_NO_TRUNC);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CHOWN_RESTRICTED);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CASE_INSENSITIVE);
NFS_BITMAP_SET(bitmap, NFS_FATTR_CASE_PRESERVING);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, nfsap, &nvattr, NULL, NULL, NULL);
nfsmout_if(error);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
if (!error)
nfs_loadattrcache(np, &nvattr, &xid, 0);
if (!lockerror)
nfs_node_unlock(np);
nfsmout:
NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_vnop_getattr(
struct vnop_getattr_args *ap)
{
struct vnode_attr *vap = ap->a_vap;
struct nfsmount *nmp;
struct nfs_vattr nva;
int error, acls, ngaflags;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
acls = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_ACL);
ngaflags = NGA_CACHED;
if (VATTR_IS_ACTIVE(vap, va_acl) && acls)
ngaflags |= NGA_ACL;
error = nfs_getattr(VTONFS(ap->a_vp), &nva, ap->a_context, ngaflags);
if (error)
return (error);
vap->va_flags |= VA_64BITOBJIDS;
if (VATTR_IS_ACTIVE(vap, va_rdev) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_RAWDEV)) {
dev_t rdev = makedev(nva.nva_rawdev.specdata1, nva.nva_rawdev.specdata2);
VATTR_RETURN(vap, va_rdev, rdev);
}
if (VATTR_IS_ACTIVE(vap, va_nlink) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_NUMLINKS))
VATTR_RETURN(vap, va_nlink, nva.nva_nlink);
if (VATTR_IS_ACTIVE(vap, va_data_size) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SIZE))
VATTR_RETURN(vap, va_data_size, nva.nva_size);
if (VATTR_IS_ACTIVE(vap, va_total_alloc) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_SPACE_USED))
VATTR_RETURN(vap, va_total_alloc, nva.nva_bytes);
if (VATTR_IS_ACTIVE(vap, va_uid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER))
VATTR_RETURN(vap, va_uid, nva.nva_uid);
if (VATTR_IS_ACTIVE(vap, va_uuuid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER))
VATTR_RETURN(vap, va_uuuid, nva.nva_uuuid);
if (VATTR_IS_ACTIVE(vap, va_gid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER_GROUP))
VATTR_RETURN(vap, va_gid, nva.nva_gid);
if (VATTR_IS_ACTIVE(vap, va_guuid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_OWNER_GROUP))
VATTR_RETURN(vap, va_guuid, nva.nva_guuid);
if (VATTR_IS_ACTIVE(vap, va_mode)) {
if (NMFLAG(nmp, ACLONLY) || !NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_MODE))
VATTR_RETURN(vap, va_mode, 0777);
else
VATTR_RETURN(vap, va_mode, nva.nva_mode);
}
if (VATTR_IS_ACTIVE(vap, va_flags) &&
(NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE) ||
NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN) ||
(nva.nva_flags & NFS_FFLAG_TRIGGER))) {
uint32_t flags = 0;
if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_ARCHIVE) &&
(nva.nva_flags & NFS_FFLAG_ARCHIVED))
flags |= SF_ARCHIVED;
if (NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_HIDDEN) &&
(nva.nva_flags & NFS_FFLAG_HIDDEN))
flags |= UF_HIDDEN;
VATTR_RETURN(vap, va_flags, flags);
}
if (VATTR_IS_ACTIVE(vap, va_create_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_CREATE)) {
vap->va_create_time.tv_sec = nva.nva_timesec[NFSTIME_CREATE];
vap->va_create_time.tv_nsec = nva.nva_timensec[NFSTIME_CREATE];
VATTR_SET_SUPPORTED(vap, va_create_time);
}
if (VATTR_IS_ACTIVE(vap, va_access_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_ACCESS)) {
vap->va_access_time.tv_sec = nva.nva_timesec[NFSTIME_ACCESS];
vap->va_access_time.tv_nsec = nva.nva_timensec[NFSTIME_ACCESS];
VATTR_SET_SUPPORTED(vap, va_access_time);
}
if (VATTR_IS_ACTIVE(vap, va_modify_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_MODIFY)) {
vap->va_modify_time.tv_sec = nva.nva_timesec[NFSTIME_MODIFY];
vap->va_modify_time.tv_nsec = nva.nva_timensec[NFSTIME_MODIFY];
VATTR_SET_SUPPORTED(vap, va_modify_time);
}
if (VATTR_IS_ACTIVE(vap, va_change_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_METADATA)) {
vap->va_change_time.tv_sec = nva.nva_timesec[NFSTIME_CHANGE];
vap->va_change_time.tv_nsec = nva.nva_timensec[NFSTIME_CHANGE];
VATTR_SET_SUPPORTED(vap, va_change_time);
}
if (VATTR_IS_ACTIVE(vap, va_backup_time) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TIME_BACKUP)) {
vap->va_backup_time.tv_sec = nva.nva_timesec[NFSTIME_BACKUP];
vap->va_backup_time.tv_nsec = nva.nva_timensec[NFSTIME_BACKUP];
VATTR_SET_SUPPORTED(vap, va_backup_time);
}
if (VATTR_IS_ACTIVE(vap, va_fileid) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_FILEID))
VATTR_RETURN(vap, va_fileid, nva.nva_fileid);
if (VATTR_IS_ACTIVE(vap, va_type) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_TYPE))
VATTR_RETURN(vap, va_type, nva.nva_type);
if (VATTR_IS_ACTIVE(vap, va_filerev) && NFS_BITMAP_ISSET(nva.nva_bitmap, NFS_FATTR_CHANGE))
VATTR_RETURN(vap, va_filerev, nva.nva_change);
if (VATTR_IS_ACTIVE(vap, va_acl) && acls) {
VATTR_RETURN(vap, va_acl, nva.nva_acl);
nva.nva_acl = NULL;
}
NVATTR_CLEANUP(&nva);
return (error);
}
int
nfs4_setattr_rpc(
nfsnode_t np,
struct vnode_attr *vap,
vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(np);
int error = 0, setattr_error = 0, lockerror = ENOENT, status, nfsvers, numops;
u_int64_t xid, nextxid;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
uint32_t getbitmap[NFS_ATTR_BITMAP_LEN];
uint32_t setbitmap[NFS_ATTR_BITMAP_LEN];
nfs_stateid stateid;
struct nfsreq_secinfo_args si;
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if (VATTR_IS_ACTIVE(vap, va_flags) && (vap->va_flags & ~(SF_ARCHIVED|UF_HIDDEN))) {
if (vap->va_active & ~VNODE_ATTR_va_flags)
return (EINVAL);
else
return (ENOTSUP);
}
if (VATTR_IS_ACTIVE(vap, va_uid) && (vap->va_uid == np->n_vattr.nva_uid))
VATTR_CLEAR_ACTIVE(vap, va_uid);
if (VATTR_IS_ACTIVE(vap, va_gid) && (vap->va_gid == np->n_vattr.nva_gid))
VATTR_CLEAR_ACTIVE(vap, va_gid);
if (VATTR_IS_ACTIVE(vap, va_uuuid) && kauth_guid_equal(&vap->va_uuuid, &np->n_vattr.nva_uuuid))
VATTR_CLEAR_ACTIVE(vap, va_uuuid);
if (VATTR_IS_ACTIVE(vap, va_guuid) && kauth_guid_equal(&vap->va_guuid, &np->n_vattr.nva_guuid))
VATTR_CLEAR_ACTIVE(vap, va_guuid);
tryagain:
nfs_vattr_set_bitmap(nmp, bitmap, vap);
if (!bitmap[0] && !bitmap[1])
return (0);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, getbitmap);
if (NFS_BITMAP_ISSET(bitmap, NFS_FATTR_ACL) ||
NFS_BITMAP_ISSET(bitmap, NFS_FATTR_MODE)) {
if (NACLVALID(np))
NFS_BITMAP_SET(getbitmap, NFS_FATTR_ACL);
NACLINVALIDATE(np);
}
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 40 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "setattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SETATTR);
if (VATTR_IS_ACTIVE(vap, va_data_size))
nfs_get_stateid(np, vfs_context_thread(ctx), vfs_context_ucred(ctx), &stateid);
else
stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, getbitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SETATTR);
nfsmout_if(error == EBADRPC);
setattr_error = error;
error = 0;
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, setbitmap, bmlen);
if (!error) {
if (VATTR_IS_ACTIVE(vap, va_data_size) && (np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
microuptime(&np->n_lastio);
nfs_vattr_set_supported(setbitmap, vap);
error = setattr_error;
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (error)
NATTRINVALIDATE(np);
nextxid = 0;
nfs_get_xid(&nextxid);
if (nextxid != (xid + 1)) {
np->n_xid = nextxid;
NATTRINVALIDATE(np);
}
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if ((setattr_error == EINVAL) && VATTR_IS_ACTIVE(vap, va_acl) && VATTR_IS_ACTIVE(vap, va_mode) && !NMFLAG(nmp, ACLONLY)) {
if (((bitmap[0] & setbitmap[0]) != bitmap[0]) ||
((bitmap[1] & (setbitmap[1]|NFS_FATTR_MODE)) != bitmap[1])) {
VATTR_CLEAR_ACTIVE(vap, va_mode);
error = 0;
goto tryagain;
}
}
return (error);
}
int
nfs_mount_state_wait_for_recovery(struct nfsmount *nmp)
{
struct timespec ts = { 1, 0 };
int error = 0, slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
lck_mtx_lock(&nmp->nm_lock);
while (nmp->nm_state & NFSSTA_RECOVER) {
if ((error = nfs_sigintr(nmp, NULL, current_thread(), 1)))
break;
nfs_mount_sock_thread_wake(nmp);
msleep(&nmp->nm_state, &nmp->nm_lock, slpflag|(PZERO-1), "nfsrecoverwait", &ts);
slpflag = 0;
}
lck_mtx_unlock(&nmp->nm_lock);
return (error);
}
int
nfs_mount_state_in_use_start(struct nfsmount *nmp, thread_t thd)
{
struct timespec ts = { 1, 0 };
int error = 0, slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
if (nfs_mount_gone(nmp))
return (ENXIO);
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_state & (NFSSTA_FORCE|NFSSTA_DEAD)) {
lck_mtx_unlock(&nmp->nm_lock);
return (ENXIO);
}
while (nmp->nm_state & NFSSTA_RECOVER) {
if ((error = nfs_sigintr(nmp, NULL, thd, 1)))
break;
nfs_mount_sock_thread_wake(nmp);
msleep(&nmp->nm_state, &nmp->nm_lock, slpflag|(PZERO-1), "nfsrecoverwait", &ts);
slpflag = 0;
}
if (!error)
nmp->nm_stateinuse++;
lck_mtx_unlock(&nmp->nm_lock);
return (error);
}
int
nfs_mount_state_in_use_end(struct nfsmount *nmp, int error)
{
int restart = nfs_mount_state_error_should_restart(error);
if (nfs_mount_gone(nmp))
return (restart);
lck_mtx_lock(&nmp->nm_lock);
if (restart && (error != NFSERR_OLD_STATEID) && (error != NFSERR_GRACE)) {
printf("nfs_mount_state_in_use_end: error %d, initiating recovery for %s, 0x%x\n",
error, vfs_statfs(nmp->nm_mountp)->f_mntfromname, nmp->nm_stategenid);
nfs_need_recover(nmp, error);
}
if (nmp->nm_stateinuse > 0)
nmp->nm_stateinuse--;
else
panic("NFS mount state in use count underrun");
if (!nmp->nm_stateinuse && (nmp->nm_state & NFSSTA_RECOVER))
wakeup(&nmp->nm_stateinuse);
lck_mtx_unlock(&nmp->nm_lock);
if (error == NFSERR_GRACE)
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
return (restart);
}
int
nfs_mount_state_error_should_restart(int error)
{
switch (error) {
case NFSERR_STALE_STATEID:
case NFSERR_STALE_CLIENTID:
case NFSERR_ADMIN_REVOKED:
case NFSERR_EXPIRED:
case NFSERR_OLD_STATEID:
case NFSERR_BAD_STATEID:
case NFSERR_GRACE:
return (1);
}
return (0);
}
uint
nfs_mount_state_max_restarts(struct nfsmount *nmp)
{
return (MAX(nmp->nm_fsattr.nfsa_lease, 60));
}
int
nfs_mount_state_error_delegation_lost(int error)
{
switch (error) {
case NFSERR_STALE_STATEID:
case NFSERR_ADMIN_REVOKED:
case NFSERR_EXPIRED:
case NFSERR_OLD_STATEID:
case NFSERR_BAD_STATEID:
case NFSERR_GRACE:
return (1);
}
return (0);
}
int
nfs_open_state_set_busy(nfsnode_t np, thread_t thd)
{
struct nfsmount *nmp;
struct timespec ts = {2, 0};
int error = 0, slpflag;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
lck_mtx_lock(&np->n_openlock);
while (np->n_openflags & N_OPENBUSY) {
if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
break;
np->n_openflags |= N_OPENWANT;
msleep(&np->n_openflags, &np->n_openlock, slpflag, "nfs_open_state_set_busy", &ts);
slpflag = 0;
}
if (!error)
np->n_openflags |= N_OPENBUSY;
lck_mtx_unlock(&np->n_openlock);
return (error);
}
void
nfs_open_state_clear_busy(nfsnode_t np)
{
int wanted;
lck_mtx_lock(&np->n_openlock);
if (!(np->n_openflags & N_OPENBUSY))
panic("nfs_open_state_clear_busy");
wanted = (np->n_openflags & N_OPENWANT);
np->n_openflags &= ~(N_OPENBUSY|N_OPENWANT);
lck_mtx_unlock(&np->n_openlock);
if (wanted)
wakeup(&np->n_openflags);
}
struct nfs_open_owner *
nfs_open_owner_find(struct nfsmount *nmp, kauth_cred_t cred, int alloc)
{
uid_t uid = kauth_cred_getuid(cred);
struct nfs_open_owner *noop, *newnoop = NULL;
tryagain:
lck_mtx_lock(&nmp->nm_lock);
TAILQ_FOREACH(noop, &nmp->nm_open_owners, noo_link) {
if (kauth_cred_getuid(noop->noo_cred) == uid)
break;
}
if (!noop && !newnoop && alloc) {
lck_mtx_unlock(&nmp->nm_lock);
MALLOC(newnoop, struct nfs_open_owner *, sizeof(struct nfs_open_owner), M_TEMP, M_WAITOK);
if (!newnoop)
return (NULL);
bzero(newnoop, sizeof(*newnoop));
lck_mtx_init(&newnoop->noo_lock, nfs_open_grp, LCK_ATTR_NULL);
newnoop->noo_mount = nmp;
kauth_cred_ref(cred);
newnoop->noo_cred = cred;
newnoop->noo_name = OSAddAtomic(1, &nfs_open_owner_seqnum);
TAILQ_INIT(&newnoop->noo_opens);
goto tryagain;
}
if (!noop && newnoop) {
newnoop->noo_flags |= NFS_OPEN_OWNER_LINK;
TAILQ_INSERT_HEAD(&nmp->nm_open_owners, newnoop, noo_link);
noop = newnoop;
}
lck_mtx_unlock(&nmp->nm_lock);
if (newnoop && (noop != newnoop))
nfs_open_owner_destroy(newnoop);
if (noop)
nfs_open_owner_ref(noop);
return (noop);
}
void
nfs_open_owner_destroy(struct nfs_open_owner *noop)
{
if (noop->noo_cred)
kauth_cred_unref(&noop->noo_cred);
lck_mtx_destroy(&noop->noo_lock, nfs_open_grp);
FREE(noop, M_TEMP);
}
void
nfs_open_owner_ref(struct nfs_open_owner *noop)
{
lck_mtx_lock(&noop->noo_lock);
noop->noo_refcnt++;
lck_mtx_unlock(&noop->noo_lock);
}
void
nfs_open_owner_rele(struct nfs_open_owner *noop)
{
lck_mtx_lock(&noop->noo_lock);
if (noop->noo_refcnt < 1)
panic("nfs_open_owner_rele: no refcnt");
noop->noo_refcnt--;
if (!noop->noo_refcnt && (noop->noo_flags & NFS_OPEN_OWNER_BUSY))
panic("nfs_open_owner_rele: busy");
if (noop->noo_refcnt || (noop->noo_flags & NFS_OPEN_OWNER_LINK)) {
lck_mtx_unlock(&noop->noo_lock);
return;
}
lck_mtx_unlock(&noop->noo_lock);
nfs_open_owner_destroy(noop);
}
int
nfs_open_owner_set_busy(struct nfs_open_owner *noop, thread_t thd)
{
struct nfsmount *nmp;
struct timespec ts = {2, 0};
int error = 0, slpflag;
nmp = noop->noo_mount;
if (nfs_mount_gone(nmp))
return (ENXIO);
slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
lck_mtx_lock(&noop->noo_lock);
while (noop->noo_flags & NFS_OPEN_OWNER_BUSY) {
if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
break;
noop->noo_flags |= NFS_OPEN_OWNER_WANT;
msleep(noop, &noop->noo_lock, slpflag, "nfs_open_owner_set_busy", &ts);
slpflag = 0;
}
if (!error)
noop->noo_flags |= NFS_OPEN_OWNER_BUSY;
lck_mtx_unlock(&noop->noo_lock);
return (error);
}
void
nfs_open_owner_clear_busy(struct nfs_open_owner *noop)
{
int wanted;
lck_mtx_lock(&noop->noo_lock);
if (!(noop->noo_flags & NFS_OPEN_OWNER_BUSY))
panic("nfs_open_owner_clear_busy");
wanted = (noop->noo_flags & NFS_OPEN_OWNER_WANT);
noop->noo_flags &= ~(NFS_OPEN_OWNER_BUSY|NFS_OPEN_OWNER_WANT);
lck_mtx_unlock(&noop->noo_lock);
if (wanted)
wakeup(noop);
}
void
nfs_owner_seqid_increment(struct nfs_open_owner *noop, struct nfs_lock_owner *nlop, int error)
{
switch (error) {
case NFSERR_STALE_CLIENTID:
case NFSERR_STALE_STATEID:
case NFSERR_OLD_STATEID:
case NFSERR_BAD_STATEID:
case NFSERR_BAD_SEQID:
case NFSERR_BADXDR:
case NFSERR_RESOURCE:
case NFSERR_NOFILEHANDLE:
return;
}
if (noop)
noop->noo_seqid++;
if (nlop)
nlop->nlo_seqid++;
}
int
nfs_open_file_find(
nfsnode_t np,
struct nfs_open_owner *noop,
struct nfs_open_file **nofpp,
uint32_t accessMode,
uint32_t denyMode,
int alloc)
{
*nofpp = NULL;
return nfs_open_file_find_internal(np, noop, nofpp, accessMode, denyMode, alloc);
}
int
nfs_open_file_find_internal(
nfsnode_t np,
struct nfs_open_owner *noop,
struct nfs_open_file **nofpp,
uint32_t accessMode,
uint32_t denyMode,
int alloc)
{
struct nfs_open_file *nofp = NULL, *nofp2, *newnofp = NULL;
if (!np)
goto alloc;
tryagain:
lck_mtx_lock(&np->n_openlock);
TAILQ_FOREACH(nofp2, &np->n_opens, nof_link) {
if (nofp2->nof_owner == noop) {
nofp = nofp2;
if (!accessMode)
break;
}
if ((accessMode & nofp2->nof_deny) || (denyMode & nofp2->nof_access)) {
lck_mtx_unlock(&np->n_openlock);
return (EACCES);
}
}
if (!nofp && !*nofpp && !newnofp && alloc) {
lck_mtx_unlock(&np->n_openlock);
alloc:
MALLOC(newnofp, struct nfs_open_file *, sizeof(struct nfs_open_file), M_TEMP, M_WAITOK);
if (!newnofp)
return (ENOMEM);
bzero(newnofp, sizeof(*newnofp));
lck_mtx_init(&newnofp->nof_lock, nfs_open_grp, LCK_ATTR_NULL);
newnofp->nof_owner = noop;
nfs_open_owner_ref(noop);
newnofp->nof_np = np;
lck_mtx_lock(&noop->noo_lock);
TAILQ_INSERT_HEAD(&noop->noo_opens, newnofp, nof_oolink);
lck_mtx_unlock(&noop->noo_lock);
if (np)
goto tryagain;
}
if (!nofp) {
if (*nofpp) {
(*nofpp)->nof_np = np;
nofp = *nofpp;
} else {
nofp = newnofp;
}
if (nofp && np)
TAILQ_INSERT_HEAD(&np->n_opens, nofp, nof_link);
}
if (np)
lck_mtx_unlock(&np->n_openlock);
if (alloc && newnofp && (nofp != newnofp))
nfs_open_file_destroy(newnofp);
*nofpp = nofp;
return (nofp ? 0 : ESRCH);
}
void
nfs_open_file_destroy(struct nfs_open_file *nofp)
{
lck_mtx_lock(&nofp->nof_owner->noo_lock);
TAILQ_REMOVE(&nofp->nof_owner->noo_opens, nofp, nof_oolink);
lck_mtx_unlock(&nofp->nof_owner->noo_lock);
nfs_open_owner_rele(nofp->nof_owner);
lck_mtx_destroy(&nofp->nof_lock, nfs_open_grp);
FREE(nofp, M_TEMP);
}
int
nfs_open_file_set_busy(struct nfs_open_file *nofp, thread_t thd)
{
struct nfsmount *nmp;
struct timespec ts = {2, 0};
int error = 0, slpflag;
nmp = nofp->nof_owner->noo_mount;
if (nfs_mount_gone(nmp))
return (ENXIO);
slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
lck_mtx_lock(&nofp->nof_lock);
while (nofp->nof_flags & NFS_OPEN_FILE_BUSY) {
if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
break;
nofp->nof_flags |= NFS_OPEN_FILE_WANT;
msleep(nofp, &nofp->nof_lock, slpflag, "nfs_open_file_set_busy", &ts);
slpflag = 0;
}
if (!error)
nofp->nof_flags |= NFS_OPEN_FILE_BUSY;
lck_mtx_unlock(&nofp->nof_lock);
return (error);
}
void
nfs_open_file_clear_busy(struct nfs_open_file *nofp)
{
int wanted;
lck_mtx_lock(&nofp->nof_lock);
if (!(nofp->nof_flags & NFS_OPEN_FILE_BUSY))
panic("nfs_open_file_clear_busy");
wanted = (nofp->nof_flags & NFS_OPEN_FILE_WANT);
nofp->nof_flags &= ~(NFS_OPEN_FILE_BUSY|NFS_OPEN_FILE_WANT);
lck_mtx_unlock(&nofp->nof_lock);
if (wanted)
wakeup(nofp);
}
void
nfs_open_file_add_open(struct nfs_open_file *nofp, uint32_t accessMode, uint32_t denyMode, int delegated)
{
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_access |= accessMode;
nofp->nof_deny |= denyMode;
if (delegated) {
if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_d_r++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_d_w++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_d_rw++;
} else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_d_r_dw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_d_w_dw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_d_rw_dw++;
} else {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_d_r_drw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_d_w_drw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_d_rw_drw++;
}
} else {
if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_r++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_w++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_rw++;
} else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_r_dw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_w_dw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_rw_dw++;
} else {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
nofp->nof_r_drw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
nofp->nof_w_drw++;
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
nofp->nof_rw_drw++;
}
}
nofp->nof_opencnt++;
lck_mtx_unlock(&nofp->nof_lock);
}
void
nfs_open_file_remove_open_find(
struct nfs_open_file *nofp,
uint32_t accessMode,
uint32_t denyMode,
uint32_t *newAccessMode,
uint32_t *newDenyMode,
int *delegated)
{
*newAccessMode = nofp->nof_access;
*newDenyMode = nofp->nof_deny;
if ((accessMode & NFS_OPEN_SHARE_ACCESS_READ) &&
(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ) &&
((nofp->nof_r + nofp->nof_d_r +
nofp->nof_rw + nofp->nof_d_rw +
nofp->nof_r_dw + nofp->nof_d_r_dw +
nofp->nof_rw_dw + nofp->nof_d_rw_dw +
nofp->nof_r_drw + nofp->nof_d_r_drw +
nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
*newAccessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
if ((accessMode & NFS_OPEN_SHARE_ACCESS_WRITE) &&
(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_WRITE) &&
((nofp->nof_w + nofp->nof_d_w +
nofp->nof_rw + nofp->nof_d_rw +
nofp->nof_w_dw + nofp->nof_d_w_dw +
nofp->nof_rw_dw + nofp->nof_d_rw_dw +
nofp->nof_w_drw + nofp->nof_d_w_drw +
nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
*newAccessMode &= ~NFS_OPEN_SHARE_ACCESS_WRITE;
if ((denyMode & NFS_OPEN_SHARE_DENY_READ) &&
(nofp->nof_deny & NFS_OPEN_SHARE_DENY_READ) &&
((nofp->nof_r_drw + nofp->nof_d_r_drw +
nofp->nof_w_drw + nofp->nof_d_w_drw +
nofp->nof_rw_drw + nofp->nof_d_rw_drw) == 1))
*newDenyMode &= ~NFS_OPEN_SHARE_DENY_READ;
if ((denyMode & NFS_OPEN_SHARE_DENY_WRITE) &&
(nofp->nof_deny & NFS_OPEN_SHARE_DENY_WRITE) &&
((nofp->nof_r_drw + nofp->nof_d_r_drw +
nofp->nof_w_drw + nofp->nof_d_w_drw +
nofp->nof_rw_drw + nofp->nof_d_rw_drw +
nofp->nof_r_dw + nofp->nof_d_r_dw +
nofp->nof_w_dw + nofp->nof_d_w_dw +
nofp->nof_rw_dw + nofp->nof_d_rw_dw) == 1))
*newDenyMode &= ~NFS_OPEN_SHARE_DENY_WRITE;
if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
*delegated = (nofp->nof_d_r != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
*delegated = (nofp->nof_d_w != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
*delegated = (nofp->nof_d_rw != 0);
else
*delegated = 0;
} else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
*delegated = (nofp->nof_d_r_dw != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
*delegated = (nofp->nof_d_w_dw != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
*delegated = (nofp->nof_d_rw_dw != 0);
else
*delegated = 0;
} else {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ)
*delegated = (nofp->nof_d_r_drw != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE)
*delegated = (nofp->nof_d_w_drw != 0);
else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH)
*delegated = (nofp->nof_d_rw_drw != 0);
else
*delegated = 0;
}
}
void
nfs_open_file_remove_open(struct nfs_open_file *nofp, uint32_t accessMode, uint32_t denyMode)
{
uint32_t newAccessMode, newDenyMode;
int delegated = 0;
lck_mtx_lock(&nofp->nof_lock);
nfs_open_file_remove_open_find(nofp, accessMode, denyMode, &newAccessMode, &newDenyMode, &delegated);
if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
if (delegated) {
if (nofp->nof_d_r == 0)
NP(nofp->nof_np, "nfs: open(R) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_r--;
} else {
if (nofp->nof_r == 0)
NP(nofp->nof_np, "nfs: open(R) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_r--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
if (delegated) {
if (nofp->nof_d_w == 0)
NP(nofp->nof_np, "nfs: open(W) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_w--;
} else {
if (nofp->nof_w == 0)
NP(nofp->nof_np, "nfs: open(W) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_w--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
if (delegated) {
if (nofp->nof_d_rw == 0)
NP(nofp->nof_np, "nfs: open(RW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_rw--;
} else {
if (nofp->nof_rw == 0)
NP(nofp->nof_np, "nfs: open(RW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_rw--;
}
}
} else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
if (delegated) {
if (nofp->nof_d_r_dw == 0)
NP(nofp->nof_np, "nfs: open(R,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_r_dw--;
} else {
if (nofp->nof_r_dw == 0)
NP(nofp->nof_np, "nfs: open(R,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_r_dw--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
if (delegated) {
if (nofp->nof_d_w_dw == 0)
NP(nofp->nof_np, "nfs: open(W,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_w_dw--;
} else {
if (nofp->nof_w_dw == 0)
NP(nofp->nof_np, "nfs: open(W,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_w_dw--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
if (delegated) {
if (nofp->nof_d_rw_dw == 0)
NP(nofp->nof_np, "nfs: open(RW,DW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_rw_dw--;
} else {
if (nofp->nof_rw_dw == 0)
NP(nofp->nof_np, "nfs: open(RW,DW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_rw_dw--;
}
}
} else {
if (accessMode == NFS_OPEN_SHARE_ACCESS_READ) {
if (delegated) {
if (nofp->nof_d_r_drw == 0)
NP(nofp->nof_np, "nfs: open(R,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_r_drw--;
} else {
if (nofp->nof_r_drw == 0)
NP(nofp->nof_np, "nfs: open(R,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_r_drw--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) {
if (delegated) {
if (nofp->nof_d_w_drw == 0)
NP(nofp->nof_np, "nfs: open(W,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_w_drw--;
} else {
if (nofp->nof_w_drw == 0)
NP(nofp->nof_np, "nfs: open(W,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_w_drw--;
}
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
if (delegated) {
if (nofp->nof_d_rw_drw == 0)
NP(nofp->nof_np, "nfs: open(RW,DRW) delegated count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_d_rw_drw--;
} else {
if (nofp->nof_rw_drw == 0)
NP(nofp->nof_np, "nfs: open(RW,DRW) count underrun, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
else
nofp->nof_rw_drw--;
}
}
}
nofp->nof_access = newAccessMode;
nofp->nof_deny = newDenyMode;
nofp->nof_opencnt--;
lck_mtx_unlock(&nofp->nof_lock);
}
void
nfs_get_stateid(nfsnode_t np, thread_t thd, kauth_cred_t cred, nfs_stateid *sid)
{
struct nfsmount *nmp = NFSTONMP(np);
proc_t p = thd ? get_bsdthreadtask_info(thd) : current_proc(); struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
struct nfs_lock_owner *nlop = NULL;
nfs_stateid *s = NULL;
if (np->n_openflags & N_DELEG_MASK) {
s = &np->n_dstateid;
} else {
if (p)
nlop = nfs_lock_owner_find(np, p, 0);
if (nlop && !TAILQ_EMPTY(&nlop->nlo_locks)) {
s = &nlop->nlo_stateid;
} else if (((noop = nfs_open_owner_find(nmp, cred, 0))) &&
(nfs_open_file_find(np, noop, &nofp, 0, 0, 0) == 0) &&
!(nofp->nof_flags & NFS_OPEN_FILE_LOST) &&
nofp->nof_access) {
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)
nfs4_reopen(nofp, thd);
if (!(nofp->nof_flags & NFS_OPEN_FILE_LOST))
s = &nofp->nof_stateid;
}
}
if (s) {
sid->seqid = s->seqid;
sid->other[0] = s->other[0];
sid->other[1] = s->other[1];
sid->other[2] = s->other[2];
} else {
if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
NP(np, "nfs_get_stateid: no stateid");
sid->seqid = sid->other[0] = sid->other[1] = sid->other[2] = 0xffffffff;
}
if (nlop)
nfs_lock_owner_rele(nlop);
if (noop)
nfs_open_owner_rele(noop);
}
int
nfs4_open_delegated(
nfsnode_t np,
struct nfs_open_file *nofp,
uint32_t accessMode,
uint32_t denyMode,
vfs_context_t ctx)
{
int error = 0, ismember, readtoo = 0, authorized = 0;
uint32_t action;
struct kauth_acl_eval eval;
kauth_cred_t cred = vfs_context_ucred(ctx);
if (!(accessMode & NFS_OPEN_SHARE_ACCESS_READ)) {
readtoo = 1;
accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
}
tryagain:
action = 0;
if (accessMode & NFS_OPEN_SHARE_ACCESS_READ)
action |= KAUTH_VNODE_READ_DATA;
if (accessMode & NFS_OPEN_SHARE_ACCESS_WRITE)
action |= KAUTH_VNODE_WRITE_DATA;
if (np->n_dace.ace_flags) {
eval.ae_requested = action;
eval.ae_acl = &np->n_dace;
eval.ae_count = 1;
eval.ae_options = 0;
if (np->n_vattr.nva_uid == kauth_cred_getuid(cred))
eval.ae_options |= KAUTH_AEVAL_IS_OWNER;
error = kauth_cred_ismember_gid(cred, np->n_vattr.nva_gid, &ismember);
if (!error && ismember)
eval.ae_options |= KAUTH_AEVAL_IN_GROUP;
eval.ae_exp_gall = KAUTH_VNODE_GENERIC_ALL_BITS;
eval.ae_exp_gread = KAUTH_VNODE_GENERIC_READ_BITS;
eval.ae_exp_gwrite = KAUTH_VNODE_GENERIC_WRITE_BITS;
eval.ae_exp_gexec = KAUTH_VNODE_GENERIC_EXECUTE_BITS;
error = kauth_acl_evaluate(cred, &eval);
if (!error && (eval.ae_result == KAUTH_RESULT_ALLOW))
authorized = 1;
}
if (!authorized) {
struct vnop_access_args naa;
naa.a_desc = &vnop_access_desc;
naa.a_vp = NFSTOV(np);
naa.a_action = action;
naa.a_context = ctx;
if (!(error = nfs_vnop_access(&naa)))
authorized = 1;
}
if (!authorized) {
if (readtoo) {
accessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
readtoo = 0;
goto tryagain;
}
return (error ? error : EACCES);
}
nfs_open_file_add_open(nofp, accessMode, denyMode, 1);
return (0);
}
int
nfs4_open(
nfsnode_t np,
struct nfs_open_file *nofp,
uint32_t accessMode,
uint32_t denyMode,
vfs_context_t ctx)
{
vnode_t vp = NFSTOV(np);
vnode_t dvp = NULL;
struct componentname cn;
const char *vname = NULL;
size_t namelen;
char smallname[128];
char *filename = NULL;
int error = 0, readtoo = 0;
if (np->n_openflags & N_DELEG_MASK) {
if ((error = nfs_open_state_set_busy(np, vfs_context_thread(ctx))))
return (error);
if ((np->n_openflags & N_DELEG_MASK) && !(np->n_openflags & N_DELEG_RETURN) &&
(((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) ||
(!(accessMode & NFS_OPEN_SHARE_ACCESS_WRITE) && !(denyMode & NFS_OPEN_SHARE_DENY_READ)))) {
error = nfs4_open_delegated(np, nofp, accessMode, denyMode, ctx);
nfs_open_state_clear_busy(np);
return (error);
}
nfs_open_state_clear_busy(np);
}
if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
(((dvp = np->n_parent)) && (error = vnode_get(dvp))))
dvp = NULL;
if (!dvp)
dvp = vnode_getparent(vp);
vname = vnode_getname(vp);
if (!dvp || !vname) {
if (!error)
error = EIO;
goto out;
}
filename = &smallname[0];
namelen = snprintf(filename, sizeof(smallname), "%s", vname);
if (namelen >= sizeof(smallname)) {
MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
if (!filename) {
error = ENOMEM;
goto out;
}
snprintf(filename, namelen+1, "%s", vname);
}
bzero(&cn, sizeof(cn));
cn.cn_nameptr = filename;
cn.cn_namelen = namelen;
if (!(accessMode & NFS_OPEN_SHARE_ACCESS_READ)) {
readtoo = 1;
accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
}
tryagain:
error = nfs4_open_rpc(nofp, ctx, &cn, NULL, dvp, &vp, NFS_OPEN_NOCREATE, accessMode, denyMode);
if (error) {
if (!nfs_mount_state_error_should_restart(error) &&
(error != EINTR) && (error != ERESTART) && readtoo) {
accessMode &= ~NFS_OPEN_SHARE_ACCESS_READ;
readtoo = 0;
goto tryagain;
}
goto out;
}
nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
out:
if (filename && (filename != &smallname[0]))
FREE(filename, M_TEMP);
if (vname)
vnode_putname(vname);
if (dvp != NULLVP)
vnode_put(dvp);
return (error);
}
int
nfs_vnop_mmap(
struct vnop_mmap_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
int error = 0, accessMode, denyMode, delegated;
struct nfsmount *nmp;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
nmp = VTONMP(vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!vnode_isreg(vp) || !(ap->a_fflags & (PROT_READ|PROT_WRITE)))
return (EINVAL);
if (np->n_flag & NREVOKE)
return (EIO);
accessMode = NFS_OPEN_SHARE_ACCESS_READ;
if (ap->a_fflags & PROT_WRITE)
accessMode |= NFS_OPEN_SHARE_ACCESS_WRITE;
denyMode = NFS_OPEN_SHARE_DENY_NONE;
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
if (!noop)
return (ENOMEM);
restart:
error = nfs_mount_state_in_use_start(nmp, NULL);
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
if (np->n_flag & NREVOKE) {
error = EIO;
nfs_mount_state_in_use_end(nmp, 0);
nfs_open_owner_rele(noop);
return (error);
}
error = nfs_open_file_find(np, noop, &nofp, 0, 0, 1);
if (error || (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST))) {
NP(np, "nfs_vnop_mmap: no open file for owner, error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
error = EPERM;
}
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(nofp, NULL);
nofp = NULL;
if (!error)
goto restart;
}
if (!error)
error = nfs_open_file_set_busy(nofp, NULL);
if (error) {
nofp = NULL;
goto out;
}
if (!(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ)) {
if (nofp->nof_flags & NFS_OPEN_FILE_NEEDCLOSE) {
NP(np, "nfs_vnop_mmap: File already needs close access: 0x%x, cred: %d thread: %lld",
nofp->nof_access, kauth_cred_getuid(nofp->nof_owner->noo_cred), thread_tid(vfs_context_thread(ctx)));
}
if (accessMode != NFS_OPEN_SHARE_ACCESS_READ || (accessMode & nofp->nof_deny)) {
error = EPERM;
goto out;
}
if (nmp->nm_vers < NFS_VER4) {
nfs_open_file_add_open(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, 0);
error = 0;
} else {
error = nfs4_open(np, nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, ctx);
}
if (!error)
nofp->nof_flags |= NFS_OPEN_FILE_NEEDCLOSE;
if (error)
goto out;
}
if (accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) {
if (nofp->nof_d_rw || nofp->nof_d_rw_dw || nofp->nof_d_rw_drw) {
delegated = 1;
if (nofp->nof_d_rw)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_d_rw_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_d_rw_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else if (nofp->nof_rw || nofp->nof_rw_dw || nofp->nof_rw_drw) {
delegated = 0;
if (nofp->nof_rw)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_rw_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_rw_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else {
error = EPERM;
}
} else {
if (nofp->nof_d_r || nofp->nof_d_r_dw || nofp->nof_d_r_drw) {
delegated = 1;
if (nofp->nof_d_r)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_d_r_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_d_r_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else if (nofp->nof_r || nofp->nof_r_dw || nofp->nof_r_drw) {
delegated = 0;
if (nofp->nof_r)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_r_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_r_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else if (nofp->nof_d_rw || nofp->nof_d_rw_dw || nofp->nof_d_rw_drw) {
delegated = 1;
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
if (nofp->nof_d_rw)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_d_rw_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_d_rw_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else if (nofp->nof_rw || nofp->nof_rw_dw || nofp->nof_rw_drw) {
delegated = 0;
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
if (nofp->nof_rw)
denyMode = NFS_OPEN_SHARE_DENY_NONE;
else if (nofp->nof_rw_dw)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else if (nofp->nof_rw_drw)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
} else {
error = EPERM;
}
}
if (error)
goto out;
if ((nofp->nof_mmap_access > accessMode) ||
((nofp->nof_mmap_access == accessMode) && (nofp->nof_mmap_deny <= denyMode)))
goto out;
if (nofp->nof_mmap_access) {
error = nfs_close(np, nofp, nofp->nof_mmap_access, nofp->nof_mmap_deny, ctx);
if (error) {
if (!nfs_mount_state_error_should_restart(error))
NP(np, "nfs_vnop_mmap: close of previous mmap mode failed: %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
NP(np, "nfs_vnop_mmap: update, close error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
goto out;
}
nofp->nof_mmap_access = nofp->nof_mmap_deny = 0;
}
nfs_open_file_add_open(nofp, accessMode, denyMode, delegated);
nofp->nof_mmap_access = accessMode;
nofp->nof_mmap_deny = denyMode;
out:
if (nofp)
nfs_open_file_clear_busy(nofp);
if (nfs_mount_state_in_use_end(nmp, error)) {
nofp = NULL;
goto restart;
}
if (noop)
nfs_open_owner_rele(noop);
if (!error) {
int ismapped = 0;
nfs_node_lock_force(np);
if ((np->n_flag & NISMAPPED) == 0) {
np->n_flag |= NISMAPPED;
ismapped = 1;
}
nfs_node_unlock(np);
if (ismapped) {
lck_mtx_lock(&nmp->nm_lock);
nmp->nm_state &= ~NFSSTA_SQUISHY;
nmp->nm_curdeadtimeout = nmp->nm_deadtimeout;
if (nmp->nm_curdeadtimeout <= 0)
nmp->nm_deadto_start = 0;
nmp->nm_mappers++;
lck_mtx_unlock(&nmp->nm_lock);
}
}
return (error);
}
int
nfs_vnop_mnomap(
struct vnop_mnomap_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
struct nfs_open_file *nofp = NULL;
off_t size;
int error;
int is_mapped_flag = 0;
nmp = VTONMP(vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfs_node_lock_force(np);
if (np->n_flag & NISMAPPED) {
is_mapped_flag = 1;
np->n_flag &= ~NISMAPPED;
}
nfs_node_unlock(np);
if (is_mapped_flag) {
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_mappers)
nmp->nm_mappers--;
else
NP(np, "nfs_vnop_mnomap: removing mmap reference from mount, but mount has no files mmapped");
lck_mtx_unlock(&nmp->nm_lock);
}
nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
if (UBCINFOEXISTS(vp) && (size = ubc_getsize(vp)))
ubc_msync(vp, 0, size, NULL, UBC_PUSHALL | UBC_SYNC);
loop:
error = nfs_mount_state_in_use_start(nmp, NULL);
if (error)
return (error);
lck_mtx_lock(&np->n_openlock);
TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
if (!nofp->nof_mmap_access)
continue;
lck_mtx_unlock(&np->n_openlock);
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(nofp, NULL);
if (!error)
goto loop;
}
if (!error)
error = nfs_open_file_set_busy(nofp, NULL);
if (error) {
lck_mtx_lock(&np->n_openlock);
break;
}
if (nofp->nof_mmap_access) {
error = nfs_close(np, nofp, nofp->nof_mmap_access, nofp->nof_mmap_deny, ctx);
if (!nfs_mount_state_error_should_restart(error)) {
if (error)
NP(np, "nfs_vnop_mnomap: close of mmap mode failed: %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
nofp->nof_mmap_access = nofp->nof_mmap_deny = 0;
}
if (error)
NP(np, "nfs_vnop_mnomap: error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
}
nfs_open_file_clear_busy(nofp);
nfs_mount_state_in_use_end(nmp, error);
goto loop;
}
lck_mtx_unlock(&np->n_openlock);
nfs_mount_state_in_use_end(nmp, error);
return (error);
}
struct nfs_lock_owner *
nfs_lock_owner_find(nfsnode_t np, proc_t p, int alloc)
{
pid_t pid = proc_pid(p);
struct nfs_lock_owner *nlop, *newnlop = NULL;
tryagain:
lck_mtx_lock(&np->n_openlock);
TAILQ_FOREACH(nlop, &np->n_lock_owners, nlo_link) {
if (nlop->nlo_pid != pid)
continue;
if (timevalcmp(&nlop->nlo_pid_start, &p->p_start, ==))
break;
if (nlop->nlo_refcnt) {
TAILQ_REMOVE(&np->n_lock_owners, nlop, nlo_link);
nlop->nlo_flags &= ~NFS_LOCK_OWNER_LINK;
lck_mtx_unlock(&np->n_openlock);
goto tryagain;
}
nlop->nlo_pid_start = p->p_start;
nlop->nlo_seqid = 0;
nlop->nlo_stategenid = 0;
break;
}
if (!nlop && !newnlop && alloc) {
lck_mtx_unlock(&np->n_openlock);
MALLOC(newnlop, struct nfs_lock_owner *, sizeof(struct nfs_lock_owner), M_TEMP, M_WAITOK);
if (!newnlop)
return (NULL);
bzero(newnlop, sizeof(*newnlop));
lck_mtx_init(&newnlop->nlo_lock, nfs_open_grp, LCK_ATTR_NULL);
newnlop->nlo_pid = pid;
newnlop->nlo_pid_start = p->p_start;
newnlop->nlo_name = OSAddAtomic(1, &nfs_lock_owner_seqnum);
TAILQ_INIT(&newnlop->nlo_locks);
goto tryagain;
}
if (!nlop && newnlop) {
newnlop->nlo_flags |= NFS_LOCK_OWNER_LINK;
TAILQ_INSERT_HEAD(&np->n_lock_owners, newnlop, nlo_link);
nlop = newnlop;
}
lck_mtx_unlock(&np->n_openlock);
if (newnlop && (nlop != newnlop))
nfs_lock_owner_destroy(newnlop);
if (nlop)
nfs_lock_owner_ref(nlop);
return (nlop);
}
void
nfs_lock_owner_destroy(struct nfs_lock_owner *nlop)
{
if (nlop->nlo_open_owner) {
nfs_open_owner_rele(nlop->nlo_open_owner);
nlop->nlo_open_owner = NULL;
}
lck_mtx_destroy(&nlop->nlo_lock, nfs_open_grp);
FREE(nlop, M_TEMP);
}
void
nfs_lock_owner_ref(struct nfs_lock_owner *nlop)
{
lck_mtx_lock(&nlop->nlo_lock);
nlop->nlo_refcnt++;
lck_mtx_unlock(&nlop->nlo_lock);
}
void
nfs_lock_owner_rele(struct nfs_lock_owner *nlop)
{
lck_mtx_lock(&nlop->nlo_lock);
if (nlop->nlo_refcnt < 1)
panic("nfs_lock_owner_rele: no refcnt");
nlop->nlo_refcnt--;
if (!nlop->nlo_refcnt && (nlop->nlo_flags & NFS_LOCK_OWNER_BUSY))
panic("nfs_lock_owner_rele: busy");
if (nlop->nlo_refcnt || (nlop->nlo_flags & NFS_LOCK_OWNER_LINK)) {
lck_mtx_unlock(&nlop->nlo_lock);
return;
}
lck_mtx_unlock(&nlop->nlo_lock);
nfs_lock_owner_destroy(nlop);
}
int
nfs_lock_owner_set_busy(struct nfs_lock_owner *nlop, thread_t thd)
{
struct nfsmount *nmp;
struct timespec ts = {2, 0};
int error = 0, slpflag;
nmp = nlop->nlo_open_owner->noo_mount;
if (nfs_mount_gone(nmp))
return (ENXIO);
slpflag = (NMFLAG(nmp, INTR) && thd) ? PCATCH : 0;
lck_mtx_lock(&nlop->nlo_lock);
while (nlop->nlo_flags & NFS_LOCK_OWNER_BUSY) {
if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
break;
nlop->nlo_flags |= NFS_LOCK_OWNER_WANT;
msleep(nlop, &nlop->nlo_lock, slpflag, "nfs_lock_owner_set_busy", &ts);
slpflag = 0;
}
if (!error)
nlop->nlo_flags |= NFS_LOCK_OWNER_BUSY;
lck_mtx_unlock(&nlop->nlo_lock);
return (error);
}
void
nfs_lock_owner_clear_busy(struct nfs_lock_owner *nlop)
{
int wanted;
lck_mtx_lock(&nlop->nlo_lock);
if (!(nlop->nlo_flags & NFS_LOCK_OWNER_BUSY))
panic("nfs_lock_owner_clear_busy");
wanted = (nlop->nlo_flags & NFS_LOCK_OWNER_WANT);
nlop->nlo_flags &= ~(NFS_LOCK_OWNER_BUSY|NFS_LOCK_OWNER_WANT);
lck_mtx_unlock(&nlop->nlo_lock);
if (wanted)
wakeup(nlop);
}
void
nfs_lock_owner_insert_held_lock(struct nfs_lock_owner *nlop, struct nfs_file_lock *newnflp)
{
struct nfs_file_lock *nflp;
lck_mtx_lock(&nlop->nlo_lock);
if ((newnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK) {
TAILQ_INSERT_HEAD(&nlop->nlo_locks, newnflp, nfl_lolink);
} else {
TAILQ_FOREACH(nflp, &nlop->nlo_locks, nfl_lolink) {
if (newnflp->nfl_start < nflp->nfl_start)
break;
}
if (nflp)
TAILQ_INSERT_BEFORE(nflp, newnflp, nfl_lolink);
else
TAILQ_INSERT_TAIL(&nlop->nlo_locks, newnflp, nfl_lolink);
}
lck_mtx_unlock(&nlop->nlo_lock);
}
struct nfs_file_lock *
nfs_file_lock_alloc(struct nfs_lock_owner *nlop)
{
struct nfs_file_lock *nflp = NULL;
lck_mtx_lock(&nlop->nlo_lock);
if (!nlop->nlo_alock.nfl_owner) {
nflp = &nlop->nlo_alock;
nflp->nfl_owner = nlop;
}
lck_mtx_unlock(&nlop->nlo_lock);
if (!nflp) {
MALLOC(nflp, struct nfs_file_lock *, sizeof(struct nfs_file_lock), M_TEMP, M_WAITOK);
if (!nflp)
return (NULL);
bzero(nflp, sizeof(*nflp));
nflp->nfl_flags |= NFS_FILE_LOCK_ALLOC;
nflp->nfl_owner = nlop;
}
nfs_lock_owner_ref(nlop);
return (nflp);
}
void
nfs_file_lock_destroy(struct nfs_file_lock *nflp)
{
struct nfs_lock_owner *nlop = nflp->nfl_owner;
if (nflp->nfl_flags & NFS_FILE_LOCK_ALLOC) {
nflp->nfl_owner = NULL;
FREE(nflp, M_TEMP);
} else {
lck_mtx_lock(&nlop->nlo_lock);
bzero(nflp, sizeof(*nflp));
lck_mtx_unlock(&nlop->nlo_lock);
}
nfs_lock_owner_rele(nlop);
}
int
nfs_file_lock_conflict(struct nfs_file_lock *nflp1, struct nfs_file_lock *nflp2, int *willsplit)
{
if ((nflp1->nfl_flags & NFS_FILE_LOCK_DEAD) || (nflp2->nfl_flags & NFS_FILE_LOCK_DEAD))
return (0);
if ((nflp1->nfl_owner == nflp2->nfl_owner) &&
((nflp1->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == (nflp2->nfl_flags & NFS_FILE_LOCK_STYLE_MASK))) {
if (willsplit && (nflp1->nfl_type != nflp2->nfl_type) &&
(nflp1->nfl_start > nflp2->nfl_start) &&
(nflp1->nfl_end < nflp2->nfl_end))
*willsplit = 1;
return (0);
}
if ((nflp1->nfl_start > nflp2->nfl_end) || (nflp1->nfl_end < nflp2->nfl_start))
return (0);
if ((nflp1->nfl_type != F_WRLCK) && (nflp2->nfl_type != F_WRLCK))
return (0);
return (1);
}
int
nfs4_setlock_rpc(
nfsnode_t np,
struct nfs_open_file *nofp,
struct nfs_file_lock *nflp,
int reclaim,
int flags,
thread_t thd,
kauth_cred_t cred)
{
struct nfs_lock_owner *nlop = nflp->nfl_owner;
struct nfsmount *nmp;
struct nfsm_chain nmreq, nmrep;
uint64_t xid;
uint32_t locktype;
int error = 0, lockerror = ENOENT, newlocker, numops, status;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
newlocker = (nlop->nlo_stategenid != nmp->nm_stategenid);
locktype = (nflp->nfl_flags & NFS_FILE_LOCK_WAIT) ?
((nflp->nfl_type == F_WRLCK) ?
NFS_LOCK_TYPE_WRITEW :
NFS_LOCK_TYPE_READW) :
((nflp->nfl_type == F_WRLCK) ?
NFS_LOCK_TYPE_WRITE :
NFS_LOCK_TYPE_READ);
if (newlocker) {
error = nfs_open_file_set_busy(nofp, thd);
if (error)
return (error);
error = nfs_open_owner_set_busy(nofp->nof_owner, thd);
if (error) {
nfs_open_file_clear_busy(nofp);
return (error);
}
if (!nlop->nlo_open_owner) {
nfs_open_owner_ref(nofp->nof_owner);
nlop->nlo_open_owner = nofp->nof_owner;
}
}
error = nfs_lock_owner_set_busy(nlop, thd);
if (error) {
if (newlocker) {
nfs_open_owner_clear_busy(nofp->nof_owner);
nfs_open_file_clear_busy(nofp);
}
return (error);
}
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 33 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "lock", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCK);
nfsm_chain_add_32(error, &nmreq, locktype);
nfsm_chain_add_32(error, &nmreq, reclaim);
nfsm_chain_add_64(error, &nmreq, nflp->nfl_start);
nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(nflp->nfl_start, nflp->nfl_end));
nfsm_chain_add_32(error, &nmreq, newlocker);
if (newlocker) {
nfsm_chain_add_32(error, &nmreq, nofp->nof_owner->noo_seqid);
nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
nfsm_chain_add_lock_owner4(error, &nmreq, nmp, nlop);
} else {
nfsm_chain_add_stateid(error, &nmreq, &nlop->nlo_stateid);
nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
}
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCK);
nfs_owner_seqid_increment(newlocker ? nofp->nof_owner : NULL, nlop, error);
nfsm_chain_get_stateid(error, &nmrep, &nlop->nlo_stateid);
if (newlocker && !error)
nlop->nlo_stategenid = nmp->nm_stategenid;
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfs_lock_owner_clear_busy(nlop);
if (newlocker) {
nfs_open_owner_clear_busy(nofp->nof_owner);
nfs_open_file_clear_busy(nofp);
}
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_unlock_rpc(
nfsnode_t np,
struct nfs_lock_owner *nlop,
int type,
uint64_t start,
uint64_t end,
int flags,
thread_t thd,
kauth_cred_t cred)
{
struct nfsmount *nmp;
struct nfsm_chain nmreq, nmrep;
uint64_t xid;
int error = 0, lockerror = ENOENT, numops, status;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
error = nfs_lock_owner_set_busy(nlop, NULL);
if (error)
return (error);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "unlock", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCKU);
nfsm_chain_add_32(error, &nmreq, (type == F_WRLCK) ? NFS_LOCK_TYPE_WRITE : NFS_LOCK_TYPE_READ);
nfsm_chain_add_32(error, &nmreq, nlop->nlo_seqid);
nfsm_chain_add_stateid(error, &nmreq, &nlop->nlo_stateid);
nfsm_chain_add_64(error, &nmreq, start);
nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(start, end));
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCKU);
nfs_owner_seqid_increment(NULL, nlop, error);
nfsm_chain_get_stateid(error, &nmrep, &nlop->nlo_stateid);
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfs_lock_owner_clear_busy(nlop);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_getlock_rpc(
nfsnode_t np,
struct nfs_lock_owner *nlop,
struct flock *fl,
uint64_t start,
uint64_t end,
vfs_context_t ctx)
{
struct nfsmount *nmp;
struct nfsm_chain nmreq, nmrep;
uint64_t xid, val64 = 0;
uint32_t val = 0;
int error = 0, lockerror, numops, status;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
lockerror = ENOENT;
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 26 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "locktest", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, NFS_VER4, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOCKT);
nfsm_chain_add_32(error, &nmreq, (fl->l_type == F_WRLCK) ? NFS_LOCK_TYPE_WRITE : NFS_LOCK_TYPE_READ);
nfsm_chain_add_64(error, &nmreq, start);
nfsm_chain_add_64(error, &nmreq, NFS_LOCK_LENGTH(start, end));
nfsm_chain_add_lock_owner4(error, &nmreq, nmp, nlop);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, NFS_VER4, &xid);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_LOCKT);
if (error == NFSERR_DENIED) {
error = 0;
nfsm_chain_get_64(error, &nmrep, fl->l_start);
nfsm_chain_get_64(error, &nmrep, val64);
fl->l_len = (val64 == UINT64_MAX) ? 0 : val64;
nfsm_chain_get_32(error, &nmrep, val);
fl->l_type = (val == NFS_LOCK_TYPE_WRITE) ? F_WRLCK : F_RDLCK;
fl->l_pid = 0;
fl->l_whence = SEEK_SET;
} else if (!error) {
fl->l_type = F_UNLCK;
}
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_advlock_getlock(
nfsnode_t np,
struct nfs_lock_owner *nlop,
struct flock *fl,
uint64_t start,
uint64_t end,
vfs_context_t ctx)
{
struct nfsmount *nmp;
struct nfs_file_lock *nflp;
int error = 0, answered = 0;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
restart:
if ((error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx))))
return (error);
lck_mtx_lock(&np->n_openlock);
TAILQ_FOREACH(nflp, &np->n_locks, nfl_link) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
continue;
if ((start <= nflp->nfl_end) && (end >= nflp->nfl_start) &&
((fl->l_type == F_WRLCK) || (nflp->nfl_type == F_WRLCK)))
break;
}
if (nflp) {
fl->l_type = nflp->nfl_type;
fl->l_pid = (nflp->nfl_flags & NFS_FILE_LOCK_STYLE_FLOCK) ? -1 : nflp->nfl_owner->nlo_pid;
fl->l_start = nflp->nfl_start;
fl->l_len = NFS_FLOCK_LENGTH(nflp->nfl_start, nflp->nfl_end);
fl->l_whence = SEEK_SET;
answered = 1;
} else if ((np->n_openflags & N_DELEG_WRITE) && !(np->n_openflags & N_DELEG_RETURN)) {
fl->l_type = F_UNLCK;
answered = 1;
}
lck_mtx_unlock(&np->n_openlock);
if (answered) {
nfs_mount_state_in_use_end(nmp, 0);
return (0);
}
error = nmp->nm_funcs->nf_getlock_rpc(np, nlop, fl, start, end, ctx);
if (nfs_mount_state_in_use_end(nmp, error))
goto restart;
return (error);
}
int
nfs_advlock_setlock(
nfsnode_t np,
struct nfs_open_file *nofp,
struct nfs_lock_owner *nlop,
int op,
uint64_t start,
uint64_t end,
int style,
short type,
vfs_context_t ctx)
{
struct nfsmount *nmp;
struct nfs_file_lock *newnflp, *nflp, *nflp2 = NULL, *nextnflp, *flocknflp = NULL;
struct nfs_file_lock *coalnflp;
int error = 0, error2, willsplit = 0, delay, slpflag, busy = 0, inuse = 0, restart, inqueue = 0;
struct timespec ts = {1, 0};
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
if ((type != F_RDLCK) && (type != F_WRLCK))
return (EINVAL);
newnflp = nfs_file_lock_alloc(nlop);
if (!newnflp)
return (ENOLCK);
newnflp->nfl_start = start;
newnflp->nfl_end = end;
newnflp->nfl_type = type;
if (op == F_SETLKW)
newnflp->nfl_flags |= NFS_FILE_LOCK_WAIT;
newnflp->nfl_flags |= style;
newnflp->nfl_flags |= NFS_FILE_LOCK_BLOCKED;
if ((style == NFS_FILE_LOCK_STYLE_FLOCK) && (type == F_WRLCK)) {
nflp = TAILQ_FIRST(&nlop->nlo_locks);
if (nflp && ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != NFS_FILE_LOCK_STYLE_FLOCK))
nflp = NULL;
if (nflp && (nflp->nfl_type != F_RDLCK))
nflp = NULL;
flocknflp = nflp;
}
restart:
restart = 0;
error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error)
goto error_out;
inuse = 1;
if (np->n_flag & NREVOKE) {
error = EIO;
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
goto error_out;
}
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
error = nfs4_reopen(nofp, vfs_context_thread(ctx));
if (error)
goto error_out;
goto restart;
}
lck_mtx_lock(&np->n_openlock);
if (!inqueue) {
TAILQ_INSERT_HEAD(&np->n_locks, newnflp, nfl_link);
inqueue = 1;
}
for (nflp = TAILQ_NEXT(newnflp, nfl_link); nflp; nflp = nextnflp) {
nextnflp = TAILQ_NEXT(nflp, nfl_link);
if (!nfs_file_lock_conflict(newnflp, nflp, &willsplit))
continue;
if (!(newnflp->nfl_flags & NFS_FILE_LOCK_WAIT)) {
error = EAGAIN;
break;
}
if (nflp->nfl_blockcnt == UINT_MAX) {
error = ENOLCK;
break;
}
nflp->nfl_blockcnt++;
do {
if (flocknflp) {
lck_mtx_unlock(&np->n_openlock);
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
error = nfs_advlock_unlock(np, nofp, nlop, 0, UINT64_MAX, NFS_FILE_LOCK_STYLE_FLOCK, ctx);
flocknflp = NULL;
if (!error)
error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error) {
lck_mtx_lock(&np->n_openlock);
break;
}
inuse = 1;
lck_mtx_lock(&np->n_openlock);
if (!nfs_file_lock_conflict(newnflp, nflp, NULL))
break;
}
msleep(nflp, &np->n_openlock, slpflag, "nfs_advlock_setlock_blocked", &ts);
slpflag = 0;
error = nfs_sigintr(NFSTONMP(np), NULL, vfs_context_thread(ctx), 0);
if (!error && (nmp->nm_state & NFSSTA_RECOVER)) {
restart = 1;
lck_mtx_unlock(&np->n_openlock);
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
lck_mtx_lock(&np->n_openlock);
break;
}
if (!error && (np->n_flag & NREVOKE))
error = EIO;
} while (!error && nfs_file_lock_conflict(newnflp, nflp, NULL));
nflp->nfl_blockcnt--;
if ((nflp->nfl_flags & NFS_FILE_LOCK_DEAD) && !nflp->nfl_blockcnt) {
TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
nfs_file_lock_destroy(nflp);
}
if (error || restart)
break;
nextnflp = TAILQ_NEXT(newnflp, nfl_link);
}
lck_mtx_unlock(&np->n_openlock);
if (restart)
goto restart;
if (error)
goto error_out;
if (willsplit) {
nflp2 = nfs_file_lock_alloc(nlop);
if (!nflp2) {
error = ENOLCK;
goto error_out;
}
}
if ((error = nfs_open_state_set_busy(np, vfs_context_thread(ctx))))
goto error_out;
busy = 1;
delay = 0;
do {
if ((np->n_openflags & N_DELEG_MASK) && !(np->n_openflags & N_DELEG_RETURN)) {
if (np->n_openflags & N_DELEG_WRITE) {
newnflp->nfl_flags |= NFS_FILE_LOCK_DELEGATED;
error = 0;
if (!nlop->nlo_open_owner) {
nfs_open_owner_ref(nofp->nof_owner);
nlop->nlo_open_owner = nofp->nof_owner;
}
break;
} else {
if ((!nofp->nof_rw_drw && !nofp->nof_w_drw && !nofp->nof_r_drw &&
!nofp->nof_rw_dw && !nofp->nof_w_dw && !nofp->nof_r_dw &&
!nofp->nof_rw && !nofp->nof_w && !nofp->nof_r) &&
(nofp->nof_d_rw_drw || nofp->nof_d_w_drw || nofp->nof_d_r_drw ||
nofp->nof_d_rw_dw || nofp->nof_d_w_dw || nofp->nof_d_r_dw ||
nofp->nof_d_rw || nofp->nof_d_w || nofp->nof_d_r)) {
error = nfs4_claim_delegated_state_for_open_file(nofp, 0);
if (error)
break;
}
}
}
if (np->n_flag & NREVOKE)
error = EIO;
if (!error)
error = nmp->nm_funcs->nf_setlock_rpc(np, nofp, newnflp, 0, 0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (!error || ((error != NFSERR_DENIED) && (error != NFSERR_GRACE)))
break;
if ((error == NFSERR_DENIED) && !(newnflp->nfl_flags & NFS_FILE_LOCK_WAIT)) {
error = EAGAIN;
break;
}
if (flocknflp) {
nfs_open_state_clear_busy(np);
busy = 0;
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
error2 = nfs_advlock_unlock(np, nofp, nlop, 0, UINT64_MAX, NFS_FILE_LOCK_STYLE_FLOCK, ctx);
flocknflp = NULL;
if (!error2)
error2 = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (!error2) {
inuse = 1;
error2 = nfs_open_state_set_busy(np, vfs_context_thread(ctx));
}
if (error2) {
error = error2;
break;
}
busy = 1;
}
if ((nmp->nm_vers >= NFS_VER4) || (error == NFSERR_GRACE)) {
if (error == NFSERR_GRACE)
delay = 4;
if (delay < 4)
delay++;
tsleep(newnflp, slpflag, "nfs_advlock_setlock_delay", delay * (hz/2));
slpflag = 0;
}
error = nfs_sigintr(NFSTONMP(np), NULL, vfs_context_thread(ctx), 0);
if (!error && (nmp->nm_state & NFSSTA_RECOVER)) {
nfs_open_state_clear_busy(np);
busy = 0;
nfs_mount_state_in_use_end(nmp, 0);
inuse = 0;
goto restart;
}
if (!error && (np->n_flag & NREVOKE))
error = EIO;
} while (!error);
error_out:
if (nfs_mount_state_error_should_restart(error)) {
if (busy) {
nfs_open_state_clear_busy(np);
busy = 0;
}
if (inuse) {
nfs_mount_state_in_use_end(nmp, error);
inuse = 0;
}
goto restart;
}
lck_mtx_lock(&np->n_openlock);
newnflp->nfl_flags &= ~NFS_FILE_LOCK_BLOCKED;
if (error) {
newnflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
if (newnflp->nfl_blockcnt) {
wakeup(newnflp);
} else {
if (inqueue)
TAILQ_REMOVE(&np->n_locks, newnflp, nfl_link);
nfs_file_lock_destroy(newnflp);
}
lck_mtx_unlock(&np->n_openlock);
if (busy)
nfs_open_state_clear_busy(np);
if (inuse)
nfs_mount_state_in_use_end(nmp, error);
if (nflp2)
nfs_file_lock_destroy(nflp2);
return (error);
}
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (nflp == newnflp)
continue;
if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
continue;
if (nflp->nfl_owner != nlop)
continue;
if ((newnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != (nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK))
continue;
if ((newnflp->nfl_start > nflp->nfl_end) || (newnflp->nfl_end < nflp->nfl_start))
continue;
if ((newnflp->nfl_start <= nflp->nfl_start) && (newnflp->nfl_end >= nflp->nfl_end)) {
nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
lck_mtx_lock(&nlop->nlo_lock);
TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nlop->nlo_lock);
} else if ((newnflp->nfl_start > nflp->nfl_start) && (newnflp->nfl_end < nflp->nfl_end)) {
nflp2->nfl_flags |= (nflp->nfl_flags & (NFS_FILE_LOCK_STYLE_MASK|NFS_FILE_LOCK_DELEGATED));
nflp2->nfl_type = nflp->nfl_type;
nflp2->nfl_start = newnflp->nfl_end + 1;
nflp2->nfl_end = nflp->nfl_end;
nflp->nfl_end = newnflp->nfl_start - 1;
TAILQ_INSERT_AFTER(&np->n_locks, nflp, nflp2, nfl_link);
nfs_lock_owner_insert_held_lock(nlop, nflp2);
nextnflp = nflp2;
nflp2 = NULL;
} else if (newnflp->nfl_start > nflp->nfl_start) {
nflp->nfl_end = newnflp->nfl_start - 1;
} else if (newnflp->nfl_end < nflp->nfl_end) {
nflp->nfl_start = newnflp->nfl_end + 1;
}
if (nflp->nfl_blockcnt) {
wakeup(nflp);
} else if (nflp->nfl_flags & NFS_FILE_LOCK_DEAD) {
TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
nfs_file_lock_destroy(nflp);
}
}
nfs_lock_owner_insert_held_lock(nlop, newnflp);
if ((style == NFS_FILE_LOCK_STYLE_POSIX) && (nofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)) {
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
continue;
if (nflp->nfl_owner != nlop)
continue;
if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != NFS_FILE_LOCK_STYLE_POSIX)
continue;
if (((coalnflp = TAILQ_PREV(nflp, nfs_file_lock_queue, nfl_lolink))) &&
((coalnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) &&
(coalnflp->nfl_type == nflp->nfl_type) &&
(coalnflp->nfl_end == (nflp->nfl_start - 1))) {
coalnflp->nfl_end = nflp->nfl_end;
nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
lck_mtx_lock(&nlop->nlo_lock);
TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nlop->nlo_lock);
} else if (((coalnflp = TAILQ_NEXT(nflp, nfl_lolink))) &&
((coalnflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) &&
(coalnflp->nfl_type == nflp->nfl_type) &&
(coalnflp->nfl_start == (nflp->nfl_end + 1))) {
coalnflp->nfl_start = nflp->nfl_start;
nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
lck_mtx_lock(&nlop->nlo_lock);
TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nlop->nlo_lock);
}
if (!(nflp->nfl_flags & NFS_FILE_LOCK_DEAD))
continue;
if (nflp->nfl_blockcnt) {
wakeup(nflp);
} else {
TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
nfs_file_lock_destroy(nflp);
}
}
}
lck_mtx_unlock(&np->n_openlock);
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
if (nflp2)
nfs_file_lock_destroy(nflp2);
return (error);
}
int
nfs_advlock_unlock(
nfsnode_t np,
struct nfs_open_file *nofp,
struct nfs_lock_owner *nlop,
uint64_t start,
uint64_t end,
int style,
vfs_context_t ctx)
{
struct nfsmount *nmp;
struct nfs_file_lock *nflp, *nextnflp, *newnflp = NULL;
int error = 0, willsplit = 0, send_unlock_rpcs = 1;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
restart:
if ((error = nfs_mount_state_in_use_start(nmp, NULL)))
return (error);
if (nofp->nof_flags & NFS_OPEN_FILE_REOPEN) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(nofp, NULL);
if (error)
return (error);
goto restart;
}
if ((error = nfs_open_state_set_busy(np, NULL))) {
nfs_mount_state_in_use_end(nmp, error);
return (error);
}
lck_mtx_lock(&np->n_openlock);
if ((start > 0) && (end < UINT64_MAX) && !willsplit) {
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
continue;
if (nflp->nfl_owner != nlop)
continue;
if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != style)
continue;
if ((start > nflp->nfl_end) || (end < nflp->nfl_start))
continue;
if ((start > nflp->nfl_start) && (end < nflp->nfl_end)) {
willsplit = 1;
break;
}
}
if (willsplit) {
lck_mtx_unlock(&np->n_openlock);
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, 0);
newnflp = nfs_file_lock_alloc(nlop);
if (!newnflp)
return (ENOMEM);
goto restart;
}
}
if ((style == NFS_FILE_LOCK_STYLE_POSIX) &&
((nflp = TAILQ_FIRST(&nlop->nlo_locks))) &&
((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK))
send_unlock_rpcs = 0;
if ((style == NFS_FILE_LOCK_STYLE_FLOCK) &&
((nflp = TAILQ_FIRST(&nlop->nlo_locks))) &&
((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_FLOCK) &&
((nflp = TAILQ_NEXT(nflp, nfl_lolink))) &&
((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX)) {
uint64_t s = 0;
int type = TAILQ_FIRST(&nlop->nlo_locks)->nfl_type;
int delegated = (TAILQ_FIRST(&nlop->nlo_locks)->nfl_flags & NFS_FILE_LOCK_DELEGATED);
while (!delegated && nflp) {
if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) == NFS_FILE_LOCK_STYLE_POSIX) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, type, s, nflp->nfl_start-1, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
if (error)
goto out;
s = nflp->nfl_end+1;
}
nflp = TAILQ_NEXT(nflp, nfl_lolink);
}
if (!delegated) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, type, s, end, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
if (error)
goto out;
}
send_unlock_rpcs = 0;
}
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_BLOCKED|NFS_FILE_LOCK_DEAD))
continue;
if (nflp->nfl_owner != nlop)
continue;
if ((nflp->nfl_flags & NFS_FILE_LOCK_STYLE_MASK) != style)
continue;
if ((start > nflp->nfl_end) || (end < nflp->nfl_start))
continue;
if ((start <= nflp->nfl_start) && (end >= nflp->nfl_end)) {
if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, nflp->nfl_start, nflp->nfl_end, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
}
nextnflp = TAILQ_NEXT(nflp, nfl_link);
if (error)
break;
nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
lck_mtx_lock(&nlop->nlo_lock);
TAILQ_REMOVE(&nlop->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nlop->nlo_lock);
} else if ((start > nflp->nfl_start) && (end < nflp->nfl_end)) {
if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, start, end, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
}
if (error)
break;
newnflp->nfl_flags |= (nflp->nfl_flags & (NFS_FILE_LOCK_STYLE_MASK|NFS_FILE_LOCK_DELEGATED));
newnflp->nfl_type = nflp->nfl_type;
newnflp->nfl_start = end + 1;
newnflp->nfl_end = nflp->nfl_end;
nflp->nfl_end = start - 1;
TAILQ_INSERT_AFTER(&np->n_locks, nflp, newnflp, nfl_link);
nfs_lock_owner_insert_held_lock(nlop, newnflp);
nextnflp = newnflp;
newnflp = NULL;
} else if (start > nflp->nfl_start) {
if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, start, nflp->nfl_end, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
}
nextnflp = TAILQ_NEXT(nflp, nfl_link);
if (error)
break;
nflp->nfl_end = start - 1;
} else if (end < nflp->nfl_end) {
if (send_unlock_rpcs && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED)) {
lck_mtx_unlock(&np->n_openlock);
error = nmp->nm_funcs->nf_unlock_rpc(np, nlop, nflp->nfl_type, nflp->nfl_start, end, 0,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, error);
goto restart;
}
lck_mtx_lock(&np->n_openlock);
}
nextnflp = TAILQ_NEXT(nflp, nfl_link);
if (error)
break;
nflp->nfl_start = end + 1;
}
if (nflp->nfl_blockcnt) {
wakeup(nflp);
} else if (nflp->nfl_flags & NFS_FILE_LOCK_DEAD) {
TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
nfs_file_lock_destroy(nflp);
}
}
out:
lck_mtx_unlock(&np->n_openlock);
nfs_open_state_clear_busy(np);
nfs_mount_state_in_use_end(nmp, 0);
if (newnflp)
nfs_file_lock_destroy(newnflp);
return (error);
}
int
nfs_vnop_advlock(
struct vnop_advlock_args *ap)
{
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(ap->a_vp);
struct flock *fl = ap->a_fl;
int op = ap->a_op;
int flags = ap->a_flags;
vfs_context_t ctx = ap->a_context;
struct nfsmount *nmp;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
struct nfs_lock_owner *nlop = NULL;
off_t lstart;
uint64_t start, end;
int error = 0, modified, style;
enum vtype vtype;
#define OFF_MAX QUAD_MAX
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
lck_mtx_lock(&nmp->nm_lock);
if ((nmp->nm_vers <= NFS_VER3) && (nmp->nm_lockmode == NFS_LOCK_MODE_DISABLED)) {
lck_mtx_unlock(&nmp->nm_lock);
return (ENOTSUP);
}
lck_mtx_unlock(&nmp->nm_lock);
if (np->n_flag & NREVOKE)
return (EIO);
vtype = vnode_vtype(ap->a_vp);
if (vtype == VDIR)
return (0);
if (vtype != VREG)
return (EINVAL);
switch (fl->l_whence) {
case SEEK_SET:
case SEEK_CUR:
lstart = fl->l_start;
break;
case SEEK_END:
if ((error = nfs_node_lock(np)))
return (error);
modified = (np->n_flag & NMODIFIED);
nfs_node_unlock(np);
if (modified && ((error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1))))
return (error);
if ((error = nfs_getattr(np, NULL, ctx, NGA_UNCACHED)))
return (error);
nfs_data_lock(np, NFS_DATA_LOCK_SHARED);
if ((np->n_size > OFF_MAX) ||
((fl->l_start > 0) && (np->n_size > (u_quad_t)(OFF_MAX - fl->l_start))))
error = EOVERFLOW;
lstart = np->n_size + fl->l_start;
nfs_data_unlock(np);
if (error)
return (error);
break;
default:
return (EINVAL);
}
if (lstart < 0)
return (EINVAL);
start = lstart;
if (fl->l_len == 0) {
end = UINT64_MAX;
} else if (fl->l_len > 0) {
if ((fl->l_len - 1) > (OFF_MAX - lstart))
return (EOVERFLOW);
end = start - 1 + fl->l_len;
} else {
if ((lstart + fl->l_len) < 0)
return (EINVAL);
end = start - 1;
start += fl->l_len;
}
if ((nmp->nm_vers == NFS_VER2) && ((start > INT32_MAX) || (fl->l_len && (end > INT32_MAX))))
return (EINVAL);
style = (flags & F_FLOCK) ? NFS_FILE_LOCK_STYLE_FLOCK : NFS_FILE_LOCK_STYLE_POSIX;
if ((style == NFS_FILE_LOCK_STYLE_FLOCK) && ((start != 0) || (end != UINT64_MAX)))
return (EINVAL);
nlop = nfs_lock_owner_find(np, vfs_context_proc(ctx), (op != F_UNLCK));
if (!nlop) {
error = (op == F_UNLCK) ? 0 : ENOMEM;
if (error)
NP(np, "nfs_vnop_advlock: no lock owner, error %d", error);
goto out;
}
if (op == F_GETLK) {
error = nfs_advlock_getlock(np, nlop, fl, start, end, ctx);
} else {
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 0);
if (!noop) {
NP(np, "nfs_vnop_advlock: no open owner %d", kauth_cred_getuid(vfs_context_ucred(ctx)));
error = EPERM;
goto out;
}
restart:
error = nfs_open_file_find(np, noop, &nofp, 0, 0, 0);
if (error)
error = EBADF;
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
NP(np, "nfs_vnop_advlock: LOST %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
error = EIO;
}
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
error = nfs4_reopen(nofp, ((op == F_UNLCK) ? NULL : vfs_context_thread(ctx)));
nofp = NULL;
if (!error)
goto restart;
}
if (error) {
NP(np, "nfs_vnop_advlock: no open file %d, %d", error, kauth_cred_getuid(noop->noo_cred));
goto out;
}
if (op == F_UNLCK) {
error = nfs_advlock_unlock(np, nofp, nlop, start, end, style, ctx);
} else if ((op == F_SETLK) || (op == F_SETLKW)) {
if ((op == F_SETLK) && (flags & F_WAIT))
op = F_SETLKW;
error = nfs_advlock_setlock(np, nofp, nlop, op, start, end, style, fl->l_type, ctx);
} else {
error = EINVAL;
}
}
out:
if (nlop)
nfs_lock_owner_rele(nlop);
if (noop)
nfs_open_owner_rele(noop);
return (error);
}
int
nfs_check_for_locks(struct nfs_open_owner *noop, struct nfs_open_file *nofp)
{
struct nfs_lock_owner *nlop;
TAILQ_FOREACH(nlop, &nofp->nof_np->n_lock_owners, nlo_link) {
if (nlop->nlo_open_owner != noop)
continue;
if (!TAILQ_EMPTY(&nlop->nlo_locks))
break;
}
return (nlop ? 1 : 0);
}
int
nfs4_reopen(struct nfs_open_file *nofp, thread_t thd)
{
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfsmount *nmp = NFSTONMP(nofp->nof_np);
nfsnode_t np = nofp->nof_np;
vnode_t vp = NFSTOV(np);
vnode_t dvp = NULL;
struct componentname cn;
const char *vname = NULL;
const char *name = NULL;
size_t namelen;
char smallname[128];
char *filename = NULL;
int error = 0, done = 0, slpflag = NMFLAG(nmp, INTR) ? PCATCH : 0;
struct timespec ts = { 1, 0 };
lck_mtx_lock(&nofp->nof_lock);
while (nofp->nof_flags & NFS_OPEN_FILE_REOPENING) {
if ((error = nfs_sigintr(nmp, NULL, thd, 0)))
break;
msleep(&nofp->nof_flags, &nofp->nof_lock, slpflag|(PZERO-1), "nfsreopenwait", &ts);
slpflag = 0;
}
if (error || !(nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
lck_mtx_unlock(&nofp->nof_lock);
return (error);
}
nofp->nof_flags |= NFS_OPEN_FILE_REOPENING;
lck_mtx_unlock(&nofp->nof_lock);
nfs_node_lock_force(np);
if ((vnode_vtype(vp) != VDIR) && np->n_sillyrename) {
struct nfs_sillyrename *nsp = np->n_sillyrename;
dvp = NFSTOV(nsp->nsr_dnp);
if ((error = vnode_get(dvp))) {
nfs_node_unlock(np);
goto out;
}
name = nsp->nsr_name;
} else {
if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
(((dvp = np->n_parent)) && (error = vnode_get(dvp))))
dvp = NULL;
if (!dvp)
dvp = vnode_getparent(vp);
vname = vnode_getname(vp);
if (!dvp || !vname) {
if (!error)
error = EIO;
nfs_node_unlock(np);
goto out;
}
name = vname;
}
filename = &smallname[0];
namelen = snprintf(filename, sizeof(smallname), "%s", name);
if (namelen >= sizeof(smallname)) {
MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
if (!filename) {
error = ENOMEM;
goto out;
}
snprintf(filename, namelen+1, "%s", name);
}
nfs_node_unlock(np);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = filename;
cn.cn_namelen = namelen;
restart:
done = 0;
if ((error = nfs_mount_state_in_use_start(nmp, thd)))
goto out;
if (nofp->nof_rw)
error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE);
if (!error && nofp->nof_w)
error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE);
if (!error && nofp->nof_r)
error = nfs4_open_reopen_rpc(nofp, thd, noop->noo_cred, &cn, dvp, &vp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE);
if (nfs_mount_state_in_use_end(nmp, error)) {
if (error == NFSERR_GRACE)
goto restart;
printf("nfs4_reopen: RPC failed, error %d, lost %d, %s\n", error,
(nofp->nof_flags & NFS_OPEN_FILE_LOST) ? 1 : 0, name ? name : "???");
error = 0;
goto out;
}
done = 1;
out:
if (error && (error != EINTR) && (error != ERESTART))
nfs_revoke_open_state_for_node(np);
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_flags &= ~NFS_OPEN_FILE_REOPENING;
if (done)
nofp->nof_flags &= ~NFS_OPEN_FILE_REOPEN;
else if (error)
printf("nfs4_reopen: failed, error %d, lost %d, %s\n", error,
(nofp->nof_flags & NFS_OPEN_FILE_LOST) ? 1 : 0, name ? name : "???");
lck_mtx_unlock(&nofp->nof_lock);
if (filename && (filename != &smallname[0]))
FREE(filename, M_TEMP);
if (vname)
vnode_putname(vname);
if (dvp != NULLVP)
vnode_put(dvp);
return (error);
}
int
nfs4_open_rpc(
struct nfs_open_file *nofp,
vfs_context_t ctx,
struct componentname *cnp,
struct vnode_attr *vap,
vnode_t dvp,
vnode_t *vpp,
int create,
int share_access,
int share_deny)
{
return (nfs4_open_rpc_internal(nofp, ctx, vfs_context_thread(ctx), vfs_context_ucred(ctx),
cnp, vap, dvp, vpp, create, share_access, share_deny));
}
int
nfs4_open_reopen_rpc(
struct nfs_open_file *nofp,
thread_t thd,
kauth_cred_t cred,
struct componentname *cnp,
vnode_t dvp,
vnode_t *vpp,
int share_access,
int share_deny)
{
return (nfs4_open_rpc_internal(nofp, NULL, thd, cred, cnp, NULL, dvp, vpp, NFS_OPEN_NOCREATE, share_access, share_deny));
}
int
nfs4_open_confirm_rpc(
struct nfsmount *nmp,
nfsnode_t dnp,
u_char *fhp,
int fhlen,
struct nfs_open_owner *noop,
nfs_stateid *sid,
thread_t thd,
kauth_cred_t cred,
struct nfs_vattr *nvap,
uint64_t *xidp)
{
struct nfsm_chain nmreq, nmrep;
int error = 0, status, numops;
struct nfsreq_secinfo_args si;
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "open_confirm", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, fhp, fhlen);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN_CONFIRM);
nfsm_chain_add_stateid(error, &nmreq, sid);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, R_NOINTR, &nmrep, xidp, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN_CONFIRM);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, sid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, nvap, NULL, NULL, NULL);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_open_rpc_internal(
struct nfs_open_file *nofp,
vfs_context_t ctx,
thread_t thd,
kauth_cred_t cred,
struct componentname *cnp,
struct vnode_attr *vap,
vnode_t dvp,
vnode_t *vpp,
int create,
int share_access,
int share_deny)
{
struct nfsmount *nmp;
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfs_vattr nvattr;
int error = 0, open_error = EIO, lockerror = ENOENT, busyerror = ENOENT, status;
int nfsvers, namedattrs, numops, exclusive = 0, gotuid, gotgid;
u_int64_t xid, savedxid = 0;
nfsnode_t dnp = VTONFS(dvp);
nfsnode_t np, newnp = NULL;
vnode_t newvp = NULL;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
uint32_t rflags, delegation, recall;
struct nfs_stateid stateid, dstateid, *sid;
fhandle_t fh;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
char sbuf[64], *s;
uint32_t ace_type, ace_flags, ace_mask, len, slen;
struct kauth_ace ace;
struct nfsreq_secinfo_args si;
if (create && !ctx)
return (EINVAL);
nmp = VTONMP(dvp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
np = *vpp ? VTONFS(*vpp) : NULL;
if (create && vap) {
exclusive = (vap->va_vaflags & VA_EXCLUSIVE);
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
gotuid = VATTR_IS_ACTIVE(vap, va_uid);
gotgid = VATTR_IS_ACTIVE(vap, va_gid);
if (exclusive && (!VATTR_IS_ACTIVE(vap, va_access_time) || !VATTR_IS_ACTIVE(vap, va_modify_time)))
vap->va_vaflags |= VA_UTIMES_NULL;
} else {
exclusive = gotuid = gotgid = 0;
}
if (nofp) {
sid = &nofp->nof_stateid;
} else {
stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
sid = &stateid;
}
if ((error = nfs_open_owner_set_busy(noop, thd)))
return (error);
again:
rflags = delegation = recall = 0;
ace.ace_flags = 0;
s = sbuf;
slen = sizeof(sbuf);
NVATTR_INIT(&nvattr);
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, cnp->cn_nameptr, cnp->cn_namelen);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 6;
nfsm_chain_build_alloc_init(error, &nmreq, 53 * NFSX_UNSIGNED + cnp->cn_namelen);
nfsm_chain_add_compound_header(error, &nmreq, create ? "create" : "open", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_32(error, &nmreq, share_access);
nfsm_chain_add_32(error, &nmreq, share_deny);
nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred));
nfsm_chain_add_32(error, &nmreq, create);
if (create) {
if (exclusive) {
static uint32_t create_verf; create_verf++;
nfsm_chain_add_32(error, &nmreq, NFS_CREATE_EXCLUSIVE);
nfsm_chain_add_32(error, &nmreq, create_verf);
nfsm_chain_add_32(error, &nmreq, create_verf);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_CREATE_UNCHECKED);
nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
}
}
nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_NULL);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
if (!error)
error = busyerror = nfs_node_set_busy(dnp, thd);
nfsmout_if(error);
if (create && !namedattrs)
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, R_NOINTR, NULL, &req);
if (!error) {
if (create && !namedattrs)
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
savedxid = xid;
}
if (create && !namedattrs)
nfs_dulookup_finish(&dul, dnp, ctx);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, sid);
nfsm_chain_check_change_info(error, &nmrep, dnp);
nfsm_chain_get_32(error, &nmrep, rflags);
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
nfsm_chain_get_32(error, &nmrep, delegation);
if (!error)
switch (delegation) {
case NFS_OPEN_DELEGATE_NONE:
break;
case NFS_OPEN_DELEGATE_READ:
case NFS_OPEN_DELEGATE_WRITE:
nfsm_chain_get_stateid(error, &nmrep, &dstateid);
nfsm_chain_get_32(error, &nmrep, recall);
if (delegation == NFS_OPEN_DELEGATE_WRITE) nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
ace_type = ace_flags = ace_mask = len = 0;
nfsm_chain_get_32(error, &nmrep, ace_type);
nfsm_chain_get_32(error, &nmrep, ace_flags);
nfsm_chain_get_32(error, &nmrep, ace_mask);
nfsm_chain_get_32(error, &nmrep, len);
ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
if (!error && (len >= slen)) {
MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
if (s)
slen = len+1;
else
ace.ace_flags = 0;
}
if (s)
nfsm_chain_get_opaque(error, &nmrep, len, s);
else
nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
if (!error && s) {
s[len] = '\0';
if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
ace.ace_flags = 0;
}
if (error || !s)
ace.ace_flags = 0;
if (s && (s != sbuf))
FREE(s, M_TEMP);
break;
default:
error = EBADRPC;
break;
}
open_error = error;
nfsmout_if(error);
if (create && vap && !exclusive)
nfs_vattr_set_supported(bitmap, vap);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
printf("nfs: open/create didn't return filehandle? %s\n", cnp->cn_nameptr);
error = EBADRPC;
goto nfsmout;
}
if (!create && np && !NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
NP(np, "nfs4_open_rpc: warning: file handle mismatch");
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
if (error)
NATTRINVALIDATE(dnp);
nfsmout_if(error);
if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
if (rflags & NFS_OPEN_RESULT_CONFIRM) {
nfs_node_unlock(dnp);
lockerror = ENOENT;
NVATTR_CLEANUP(&nvattr);
error = nfs4_open_confirm_rpc(nmp, dnp, fh.fh_data, fh.fh_len, noop, sid, thd, cred, &nvattr, &xid);
nfsmout_if(error);
savedxid = xid;
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
}
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror && create) {
if (!open_error && (dnp->n_flag & NNEGNCENTRIES)) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(dvp);
}
dnp->n_flag |= NMODIFIED;
nfs_node_unlock(dnp);
lockerror = ENOENT;
nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
}
if (!lockerror)
nfs_node_unlock(dnp);
if (!error && !np && fh.fh_len) {
xid = savedxid;
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &newnp);
if (!error)
newvp = NFSTOV(newnp);
}
NVATTR_CLEANUP(&nvattr);
if (!busyerror)
nfs_node_clear_busy(dnp);
if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
if (!np)
np = newnp;
if (!error && np && !recall) {
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~N_DELEG_MASK;
np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
np->n_dstateid = dstateid;
np->n_dace = ace;
if (np->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&np->n_openlock);
} else {
if (np) {
if (NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~N_DELEG_MASK;
np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
np->n_dstateid = dstateid;
np->n_dace = ace;
if (np->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&np->n_openlock);
fh.fh_len = 0;
}
nfs4_delegation_return(np, 0, thd, cred);
}
if (fh.fh_len)
nfs4_delegreturn_rpc(nmp, fh.fh_data, fh.fh_len, &dstateid, 0, thd, cred);
}
}
if (error) {
if (exclusive && (error == NFSERR_NOTSUPP)) {
exclusive = 0;
goto again;
}
if (newvp) {
nfs_node_unlock(newnp);
vnode_put(newvp);
}
} else if (create) {
nfs_node_unlock(newnp);
if (exclusive) {
error = nfs4_setattr_rpc(newnp, vap, ctx);
if (error && (gotuid || gotgid)) {
VATTR_CLEAR_ACTIVE(vap, va_uid);
VATTR_CLEAR_ACTIVE(vap, va_gid);
error = nfs4_setattr_rpc(newnp, vap, ctx);
}
}
if (error)
vnode_put(newvp);
else
*vpp = newvp;
}
nfs_open_owner_clear_busy(noop);
return (error);
}
int
nfs4_claim_delegated_open_rpc(
struct nfs_open_file *nofp,
int share_access,
int share_deny,
int flags)
{
struct nfsmount *nmp;
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfs_vattr nvattr;
int error = 0, lockerror = ENOENT, status;
int nfsvers, numops;
u_int64_t xid;
nfsnode_t np = nofp->nof_np;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
uint32_t rflags = 0, delegation, recall = 0;
fhandle_t fh;
struct nfs_stateid dstateid;
char sbuf[64], *s = sbuf;
uint32_t ace_type, ace_flags, ace_mask, len, slen = sizeof(sbuf);
struct kauth_ace ace;
vnode_t dvp = NULL;
const char *vname = NULL;
const char *name = NULL;
size_t namelen;
char smallname[128];
char *filename = NULL;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
nfs_node_lock_force(np);
if ((vnode_vtype(NFSTOV(np)) != VDIR) && np->n_sillyrename) {
struct nfs_sillyrename *nsp = np->n_sillyrename;
dvp = NFSTOV(nsp->nsr_dnp);
if ((error = vnode_get(dvp))) {
nfs_node_unlock(np);
goto out;
}
name = nsp->nsr_name;
} else {
if ((np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR) &&
(((dvp = np->n_parent)) && (error = vnode_get(dvp))))
dvp = NULL;
if (!dvp)
dvp = vnode_getparent(NFSTOV(np));
vname = vnode_getname(NFSTOV(np));
if (!dvp || !vname) {
if (!error)
error = EIO;
nfs_node_unlock(np);
goto out;
}
name = vname;
}
filename = &smallname[0];
namelen = snprintf(filename, sizeof(smallname), "%s", name);
if (namelen >= sizeof(smallname)) {
MALLOC(filename, char *, namelen+1, M_TEMP, M_WAITOK);
if (!filename) {
error = ENOMEM;
nfs_node_unlock(np);
goto out;
}
snprintf(filename, namelen+1, "%s", name);
}
nfs_node_unlock(np);
if ((error = nfs_open_owner_set_busy(noop, NULL)))
goto out;
NVATTR_INIT(&nvattr);
delegation = NFS_OPEN_DELEGATE_NONE;
dstateid = np->n_dstateid;
NFSREQ_SECINFO_SET(&si, VTONFS(dvp), NULL, 0, filename, namelen);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 48 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "open_claim_d", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, VTONFS(dvp)->n_fhp, VTONFS(dvp)->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_32(error, &nmreq, share_access);
nfsm_chain_add_32(error, &nmreq, share_deny);
nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid); nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred)); nfsm_chain_add_32(error, &nmreq, NFS_OPEN_NOCREATE);
nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_DELEGATE_CUR);
nfsm_chain_add_stateid(error, &nmreq, &np->n_dstateid);
nfsm_chain_add_name(error, &nmreq, filename, namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, current_thread(),
noop->noo_cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
nfsm_chain_check_change_info(error, &nmrep, np);
nfsm_chain_get_32(error, &nmrep, rflags);
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
nfsm_chain_get_32(error, &nmrep, delegation);
if (!error)
switch (delegation) {
case NFS_OPEN_DELEGATE_NONE:
break;
case NFS_OPEN_DELEGATE_READ:
case NFS_OPEN_DELEGATE_WRITE:
if ((((np->n_openflags & N_DELEG_MASK) == N_DELEG_READ) &&
(delegation == NFS_OPEN_DELEGATE_WRITE)) ||
(((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) &&
(delegation == NFS_OPEN_DELEGATE_READ)))
printf("nfs: open delegated claim returned a different delegation type! have %s got %s %s\n",
((np->n_openflags & N_DELEG_MASK) == N_DELEG_WRITE) ? "W" : "R",
(delegation == NFS_OPEN_DELEGATE_WRITE) ? "W" : "R", filename ? filename : "???");
nfsm_chain_get_stateid(error, &nmrep, &dstateid);
nfsm_chain_get_32(error, &nmrep, recall);
if (delegation == NFS_OPEN_DELEGATE_WRITE) nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
ace_type = ace_flags = ace_mask = len = 0;
nfsm_chain_get_32(error, &nmrep, ace_type);
nfsm_chain_get_32(error, &nmrep, ace_flags);
nfsm_chain_get_32(error, &nmrep, ace_mask);
nfsm_chain_get_32(error, &nmrep, len);
ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
if (!error && (len >= slen)) {
MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
if (s)
slen = len+1;
else
ace.ace_flags = 0;
}
if (s)
nfsm_chain_get_opaque(error, &nmrep, len, s);
else
nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
if (!error && s) {
s[len] = '\0';
if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
ace.ace_flags = 0;
}
if (error || !s)
ace.ace_flags = 0;
if (s && (s != sbuf))
FREE(s, M_TEMP);
if (!error) {
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~N_DELEG_MASK;
np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
np->n_dstateid = dstateid;
np->n_dace = ace;
if (np->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&np->n_openlock);
}
break;
default:
error = EBADRPC;
break;
}
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
printf("nfs: open reclaim didn't return filehandle? %s\n", filename ? filename : "???");
error = EBADRPC;
goto nfsmout;
}
if (!NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
printf("nfs4_claim_delegated_open_rpc: warning: file handle mismatch %s\n", filename ? filename : "???");
}
error = nfs_loadattrcache(np, &nvattr, &xid, 1);
nfsmout_if(error);
if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
nfsmout:
NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror)
nfs_node_unlock(np);
nfs_open_owner_clear_busy(noop);
if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
if (recall) {
nfs4_delegation_return_enqueue(np);
}
}
out:
if (filename && (filename != &smallname[0]))
FREE(filename, M_TEMP);
if (vname)
vnode_putname(vname);
if (dvp != NULLVP)
vnode_put(dvp);
return (error);
}
int
nfs4_open_reclaim_rpc(
struct nfs_open_file *nofp,
int share_access,
int share_deny)
{
struct nfsmount *nmp;
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfs_vattr nvattr;
int error = 0, lockerror = ENOENT, status;
int nfsvers, numops;
u_int64_t xid;
nfsnode_t np = nofp->nof_np;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
uint32_t rflags = 0, delegation, recall = 0;
fhandle_t fh;
struct nfs_stateid dstateid;
char sbuf[64], *s = sbuf;
uint32_t ace_type, ace_flags, ace_mask, len, slen = sizeof(sbuf);
struct kauth_ace ace;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((error = nfs_open_owner_set_busy(noop, NULL)))
return (error);
NVATTR_INIT(&nvattr);
delegation = NFS_OPEN_DELEGATE_NONE;
dstateid = np->n_dstateid;
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 48 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "open_reclaim", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_32(error, &nmreq, share_access);
nfsm_chain_add_32(error, &nmreq, share_deny);
nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid); nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred)); nfsm_chain_add_32(error, &nmreq, NFS_OPEN_NOCREATE);
nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_PREVIOUS);
delegation = (np->n_openflags & N_DELEG_READ) ? NFS_OPEN_DELEGATE_READ :
(np->n_openflags & N_DELEG_WRITE) ? NFS_OPEN_DELEGATE_WRITE :
NFS_OPEN_DELEGATE_NONE;
nfsm_chain_add_32(error, &nmreq, delegation);
delegation = NFS_OPEN_DELEGATE_NONE;
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, current_thread(),
noop->noo_cred, &si, R_RECOVER|R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
nfsm_chain_check_change_info(error, &nmrep, np);
nfsm_chain_get_32(error, &nmrep, rflags);
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
nfsm_chain_get_32(error, &nmrep, delegation);
if (!error)
switch (delegation) {
case NFS_OPEN_DELEGATE_NONE:
if (np->n_openflags & N_DELEG_MASK) {
delegation = (np->n_openflags & N_DELEG_WRITE) ? NFS_OPEN_DELEGATE_WRITE : NFS_OPEN_DELEGATE_READ;
recall = 1;
}
break;
case NFS_OPEN_DELEGATE_READ:
case NFS_OPEN_DELEGATE_WRITE:
nfsm_chain_get_stateid(error, &nmrep, &dstateid);
nfsm_chain_get_32(error, &nmrep, recall);
if (delegation == NFS_OPEN_DELEGATE_WRITE) nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
ace_type = ace_flags = ace_mask = len = 0;
nfsm_chain_get_32(error, &nmrep, ace_type);
nfsm_chain_get_32(error, &nmrep, ace_flags);
nfsm_chain_get_32(error, &nmrep, ace_mask);
nfsm_chain_get_32(error, &nmrep, len);
ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
if (!error && (len >= slen)) {
MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
if (s)
slen = len+1;
else
ace.ace_flags = 0;
}
if (s)
nfsm_chain_get_opaque(error, &nmrep, len, s);
else
nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
if (!error && s) {
s[len] = '\0';
if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
ace.ace_flags = 0;
}
if (error || !s)
ace.ace_flags = 0;
if (s && (s != sbuf))
FREE(s, M_TEMP);
if (!error) {
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~N_DELEG_MASK;
np->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
np->n_dstateid = dstateid;
np->n_dace = ace;
if (np->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, np, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&np->n_openlock);
}
break;
default:
error = EBADRPC;
break;
}
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
NP(np, "nfs: open reclaim didn't return filehandle?");
error = EBADRPC;
goto nfsmout;
}
if (!NFS_CMPFH(np, fh.fh_data, fh.fh_len)) {
if (!(np->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
NP(np, "nfs4_open_reclaim_rpc: warning: file handle mismatch");
}
error = nfs_loadattrcache(np, &nvattr, &xid, 1);
nfsmout_if(error);
if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
nfsmout:
NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror)
nfs_node_unlock(np);
nfs_open_owner_clear_busy(noop);
if ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE)) {
if (recall)
nfs4_delegation_return_enqueue(np);
}
return (error);
}
int
nfs4_open_downgrade_rpc(
nfsnode_t np,
struct nfs_open_file *nofp,
vfs_context_t ctx)
{
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfsmount *nmp;
int error, lockerror = ENOENT, status, nfsvers, numops;
struct nfsm_chain nmreq, nmrep;
u_int64_t xid;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((error = nfs_open_owner_set_busy(noop, NULL)))
return (error);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "open_downgrd", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN_DOWNGRADE);
nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_32(error, &nmreq, nofp->nof_access);
nfsm_chain_add_32(error, &nmreq, nofp->nof_deny);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx),
&si, R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN_DOWNGRADE);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfs_open_owner_clear_busy(noop);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_close_rpc(
nfsnode_t np,
struct nfs_open_file *nofp,
thread_t thd,
kauth_cred_t cred,
int flags)
{
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfsmount *nmp;
int error, lockerror = ENOENT, status, nfsvers, numops;
struct nfsm_chain nmreq, nmrep;
u_int64_t xid;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((error = nfs_open_owner_set_busy(noop, NULL)))
return (error);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 23 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "close", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_CLOSE);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_stateid(error, &nmreq, &nofp->nof_stateid);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags|R_NOINTR, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_CLOSE);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, &nofp->nof_stateid);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfs_open_owner_clear_busy(noop);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_claim_delegated_state_for_open_file(struct nfs_open_file *nofp, int flags)
{
struct nfs_open_owner *noop = nofp->nof_owner;
struct nfs_lock_owner *nlop;
struct nfs_file_lock *nflp, *nextnflp;
struct nfsmount *nmp;
int error = 0, reopen = 0;
if (nofp->nof_d_rw_drw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_BOTH, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_rw_drw += nofp->nof_d_rw_drw;
nofp->nof_d_rw_drw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_w_drw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_BOTH, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_w_drw += nofp->nof_d_w_drw;
nofp->nof_d_w_drw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_r_drw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_BOTH, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_r_drw += nofp->nof_d_r_drw;
nofp->nof_d_r_drw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_rw_dw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_WRITE, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_rw_dw += nofp->nof_d_rw_dw;
nofp->nof_d_rw_dw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_w_dw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_WRITE, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_w_dw += nofp->nof_d_w_dw;
nofp->nof_d_w_dw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_r_dw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_WRITE, flags);
if (!error) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_r_dw += nofp->nof_d_r_dw;
nofp->nof_d_r_dw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (!error && nofp->nof_d_rw) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE, flags);
if (nfs_mount_state_error_delegation_lost(error))
reopen = error;
if (!error || reopen) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_rw += nofp->nof_d_rw;
nofp->nof_d_rw = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if ((!error || reopen) && nofp->nof_d_w) {
if (!error) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE, flags);
if (nfs_mount_state_error_delegation_lost(error))
reopen = error;
}
if (!error || reopen) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_w += nofp->nof_d_w;
nofp->nof_d_w = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if ((!error || reopen) && nofp->nof_d_r) {
if (!error) {
error = nfs4_claim_delegated_open_rpc(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, flags);
if (nfs_mount_state_error_delegation_lost(error))
reopen = error;
}
if (!error || reopen) {
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_r += nofp->nof_d_r;
nofp->nof_d_r = 0;
lck_mtx_unlock(&nofp->nof_lock);
}
}
if (reopen) {
if ((nmp = NFSTONMP(nofp->nof_np))) {
nfs4_delegation_return_enqueue(nofp->nof_np);
lck_mtx_lock(&nmp->nm_lock);
nfs_need_recover(nmp, NFSERR_EXPIRED);
lck_mtx_unlock(&nmp->nm_lock);
}
if (reopen && (nfs_check_for_locks(noop, nofp) == 0)) {
NP(nofp->nof_np, "nfs4_claim_delegated_state_for_open_file: %d, need reopen, %d",
reopen, kauth_cred_getuid(nofp->nof_owner->noo_cred));
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_flags |= NFS_OPEN_FILE_REOPEN;
lck_mtx_unlock(&nofp->nof_lock);
return (0);
}
if (reopen)
NP(nofp->nof_np, "nfs4_claim_delegated_state_for_open_file: %d, locks prevent reopen, %d",
reopen, kauth_cred_getuid(nofp->nof_owner->noo_cred));
}
if (!error && ((nmp = NFSTONMP(nofp->nof_np)))) {
TAILQ_FOREACH(nlop, &nofp->nof_np->n_lock_owners, nlo_link) {
if (nlop->nlo_open_owner != noop)
continue;
TAILQ_FOREACH_SAFE(nflp, &nlop->nlo_locks, nfl_lolink, nextnflp) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_DEAD|NFS_FILE_LOCK_BLOCKED))
continue;
if (!(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED))
continue;
error = nmp->nm_funcs->nf_setlock_rpc(nofp->nof_np, nofp, nflp, 0, flags, current_thread(), noop->noo_cred);
if (error) {
NP(nofp->nof_np, "nfs: delegated lock claim (0x%llx, 0x%llx) failed %d, %d",
nflp->nfl_start, nflp->nfl_end, error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
break;
}
}
if (error)
break;
}
}
if (!error)
return (0);
if (!nfs_mount_state_error_delegation_lost(error) &&
((error == ETIMEDOUT) || nfs_mount_state_error_should_restart(error))) {
NP(nofp->nof_np, "nfs delegated lock claim error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
if ((error == ETIMEDOUT) && ((nmp = NFSTONMP(nofp->nof_np))))
nfs_need_reconnect(nmp);
return (error);
}
NP(nofp->nof_np, "nfs delegated state claim error %d, state lost, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
if ((nmp = NFSTONMP(nofp->nof_np))) {
nfs4_delegation_return_enqueue(nofp->nof_np);
lck_mtx_lock(&nmp->nm_lock);
nfs_need_recover(nmp, NFSERR_EXPIRED);
lck_mtx_unlock(&nmp->nm_lock);
}
nfs_revoke_open_state_for_node(nofp->nof_np);
return (error);
}
void
nfs_release_open_state_for_node(nfsnode_t np, int force)
{
struct nfsmount *nmp = NFSTONMP(np);
struct nfs_open_file *nofp;
struct nfs_file_lock *nflp, *nextnflp;
TAILQ_FOREACH_SAFE(nflp, &np->n_locks, nfl_link, nextnflp) {
if (nflp->nfl_flags & (NFS_FILE_LOCK_DEAD|NFS_FILE_LOCK_BLOCKED))
continue;
if (!force && nmp && !(nflp->nfl_flags & NFS_FILE_LOCK_DELEGATED))
nmp->nm_funcs->nf_unlock_rpc(np, nflp->nfl_owner, F_WRLCK, nflp->nfl_start, nflp->nfl_end, R_RECOVER,
NULL, nflp->nfl_owner->nlo_open_owner->noo_cred);
lck_mtx_lock(&np->n_openlock);
nflp->nfl_flags |= NFS_FILE_LOCK_DEAD;
lck_mtx_lock(&nflp->nfl_owner->nlo_lock);
TAILQ_REMOVE(&nflp->nfl_owner->nlo_locks, nflp, nfl_lolink);
lck_mtx_unlock(&nflp->nfl_owner->nlo_lock);
if (nflp->nfl_blockcnt) {
wakeup(nflp);
} else {
TAILQ_REMOVE(&np->n_locks, nflp, nfl_link);
nfs_file_lock_destroy(nflp);
}
lck_mtx_unlock(&np->n_openlock);
}
lck_mtx_lock(&np->n_openlock);
TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
if (nofp->nof_flags & NFS_OPEN_FILE_LOST)
continue;
lck_mtx_lock(&nofp->nof_lock);
nofp->nof_flags &= ~NFS_OPEN_FILE_REOPEN;
nofp->nof_flags |= NFS_OPEN_FILE_LOST;
lck_mtx_unlock(&nofp->nof_lock);
if (!force && nmp && (nmp->nm_vers >= NFS_VER4))
nfs4_close_rpc(np, nofp, NULL, nofp->nof_owner->noo_cred, R_RECOVER);
}
lck_mtx_unlock(&np->n_openlock);
}
void
nfs_revoke_open_state_for_node(nfsnode_t np)
{
struct nfsmount *nmp;
nfs_node_lock_force(np);
if (np->n_flag & NREVOKE)
{
NP(np, "nfs_revoke_open_state_for_node(): already revoked");
nfs_node_unlock(np);
return;
}
np->n_flag |= NREVOKE;
nfs_node_unlock(np);
nfs_release_open_state_for_node(np, 0);
NP(np, "nfs: state lost for %p 0x%x", np, np->n_flag);
if ((nmp = NFSTONMP(np))) {
lck_mtx_lock(&nmp->nm_lock);
nmp->nm_state |= NFSSTA_REVOKE;
nfs_mount_sock_thread_wake(nmp);
lck_mtx_unlock(&nmp->nm_lock);
}
}
int
nfs4_claim_delegated_state_for_node(nfsnode_t np, int flags)
{
struct nfs_open_file *nofp;
int error = 0;
lck_mtx_lock(&np->n_openlock);
restart:
TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
if (!nofp->nof_d_rw_drw && !nofp->nof_d_w_drw && !nofp->nof_d_r_drw &&
!nofp->nof_d_rw_dw && !nofp->nof_d_w_dw && !nofp->nof_d_r_dw &&
!nofp->nof_d_rw && !nofp->nof_d_w && !nofp->nof_d_r)
continue;
lck_mtx_unlock(&np->n_openlock);
error = nfs4_claim_delegated_state_for_open_file(nofp, flags);
lck_mtx_lock(&np->n_openlock);
if (error)
break;
goto restart;
}
lck_mtx_unlock(&np->n_openlock);
return (error);
}
void
nfs4_delegation_return_enqueue(nfsnode_t np)
{
struct nfsmount *nmp;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return;
lck_mtx_lock(&np->n_openlock);
np->n_openflags |= N_DELEG_RETURN;
lck_mtx_unlock(&np->n_openlock);
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dreturn.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_dreturnq, np, n_dreturn);
nfs_mount_sock_thread_wake(nmp);
lck_mtx_unlock(&nmp->nm_lock);
}
int
nfs4_delegation_return(nfsnode_t np, int flags, thread_t thd, kauth_cred_t cred)
{
struct nfsmount *nmp;
fhandle_t fh;
nfs_stateid dstateid;
int error;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
lck_mtx_lock(&np->n_openlock);
np->n_openflags |= (N_DELEG_RETURN|N_DELEG_RETURNING);
lck_mtx_unlock(&np->n_openlock);
if ((error = nfs_open_state_set_busy(np, NULL)))
goto out;
if ((error = nfs4_claim_delegated_state_for_node(np, flags)))
goto out;
lck_mtx_lock(&np->n_openlock);
dstateid = np->n_dstateid;
fh.fh_len = np->n_fhsize;
bcopy(np->n_fhp, &fh.fh_data, fh.fh_len);
lck_mtx_unlock(&np->n_openlock);
error = nfs4_delegreturn_rpc(NFSTONMP(np), fh.fh_data, fh.fh_len, &dstateid, flags, thd, cred);
if ((error != ETIMEDOUT) && (error != NFSERR_MOVED) && (error != NFSERR_LEASE_MOVED)) {
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~N_DELEG_MASK;
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dlink.tqe_next != NFSNOLIST) {
TAILQ_REMOVE(&nmp->nm_delegations, np, n_dlink);
np->n_dlink.tqe_next = NFSNOLIST;
}
lck_mtx_unlock(&nmp->nm_lock);
lck_mtx_unlock(&np->n_openlock);
}
out:
lck_mtx_lock(&nmp->nm_lock);
if (np->n_dreturn.tqe_next != NFSNOLIST) {
TAILQ_REMOVE(&nmp->nm_dreturnq, np, n_dreturn);
np->n_dreturn.tqe_next = NFSNOLIST;
}
lck_mtx_unlock(&nmp->nm_lock);
lck_mtx_lock(&np->n_openlock);
np->n_openflags &= ~(N_DELEG_RETURN|N_DELEG_RETURNING);
lck_mtx_unlock(&np->n_openlock);
if (error) {
NP(np, "nfs4_delegation_return, error %d", error);
if (error == ETIMEDOUT)
nfs_need_reconnect(nmp);
if (nfs_mount_state_error_should_restart(error)) {
lck_mtx_lock(&nmp->nm_lock);
nfs_need_recover(nmp, nfs_mount_state_error_delegation_lost(error) ? NFSERR_EXPIRED : 0);
lck_mtx_unlock(&nmp->nm_lock);
}
}
nfs_open_state_clear_busy(np);
return (error);
}
int
nfs4_delegreturn_rpc(struct nfsmount *nmp, u_char *fhp, int fhlen, struct nfs_stateid *sid, int flags, thread_t thd, kauth_cred_t cred)
{
int error = 0, status, numops;
uint64_t xid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
NFSREQ_SECINFO_SET(&si, NULL, fhp, fhlen, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 2;
nfsm_chain_build_alloc_init(error, &nmreq, 16 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "delegreturn", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, fhp, fhlen);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_DELEGRETURN);
nfsm_chain_add_stateid(error, &nmreq, sid);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request2(NULL, nmp->nm_mountp, &nmreq, NFSPROC4_COMPOUND, thd, cred, &si, flags, &nmrep, &xid, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_DELEGRETURN);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_vnop_read(
struct vnop_read_args *ap)
{
vnode_t vp = ap->a_vp;
vfs_context_t ctx = ap->a_context;
nfsnode_t np;
struct nfsmount *nmp;
struct nfs_open_owner *noop;
struct nfs_open_file *nofp;
int error;
if (vnode_vtype(ap->a_vp) != VREG)
return (vnode_vtype(vp) == VDIR) ? EISDIR : EPERM;
np = VTONFS(vp);
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (np->n_flag & NREVOKE)
return (EIO);
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
if (!noop)
return (ENOMEM);
restart:
error = nfs_open_file_find(np, noop, &nofp, 0, 0, 1);
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
NP(np, "nfs_vnop_read: LOST %d", kauth_cred_getuid(noop->noo_cred));
error = EIO;
}
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
error = nfs4_reopen(nofp, vfs_context_thread(ctx));
nofp = NULL;
if (!error)
goto restart;
}
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
if (nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ) {
nfs_open_owner_rele(noop);
goto do_read;
}
error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
error = nfs_open_file_set_busy(nofp, vfs_context_thread(ctx));
if (error) {
nfs_mount_state_in_use_end(nmp, 0);
nfs_open_owner_rele(noop);
return (error);
}
if (!(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_READ)) {
if (nofp->nof_flags & NFS_OPEN_FILE_NEEDCLOSE) {
NP(np, "nfs_vnop_read: File already needs close access: 0x%x, cred: %d thread: %lld",
nofp->nof_access, kauth_cred_getuid(nofp->nof_owner->noo_cred), thread_tid(vfs_context_thread(ctx)));
}
if (nofp->nof_deny & NFS_OPEN_SHARE_DENY_READ) {
nfs_open_file_clear_busy(nofp);
nfs_mount_state_in_use_end(nmp, 0);
nfs_open_owner_rele(noop);
return (EPERM);
}
if (np->n_flag & NREVOKE) {
error = EIO;
nfs_open_file_clear_busy(nofp);
nfs_mount_state_in_use_end(nmp, 0);
nfs_open_owner_rele(noop);
return (error);
}
if (nmp->nm_vers < NFS_VER4) {
nfs_open_file_add_open(nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, 0);
} else {
error = nfs4_open(np, nofp, NFS_OPEN_SHARE_ACCESS_READ, NFS_OPEN_SHARE_DENY_NONE, ctx);
}
if (!error)
nofp->nof_flags |= NFS_OPEN_FILE_NEEDCLOSE;
}
if (nofp)
nfs_open_file_clear_busy(nofp);
if (nfs_mount_state_in_use_end(nmp, error)) {
nofp = NULL;
goto restart;
}
nfs_open_owner_rele(noop);
if (error)
return (error);
do_read:
return (nfs_bioread(VTONFS(ap->a_vp), ap->a_uio, ap->a_ioflag, ap->a_context));
}
int
nfs4_vnop_create(
struct vnop_create_args *ap)
{
vfs_context_t ctx = ap->a_context;
struct componentname *cnp = ap->a_cnp;
struct vnode_attr *vap = ap->a_vap;
vnode_t dvp = ap->a_dvp;
vnode_t *vpp = ap->a_vpp;
struct nfsmount *nmp;
nfsnode_t np;
int error = 0, busyerror = 0, accessMode, denyMode;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *newnofp = NULL, *nofp = NULL;
nmp = VTONMP(dvp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (vap)
nfs_avoid_needless_id_setting_on_create(VTONFS(dvp), vap, ctx);
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
if (!noop)
return (ENOMEM);
restart:
error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
error = nfs_open_file_find(NULL, noop, &newnofp, 0, 0, 1);
if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_LOST)) {
printf("nfs_vnop_create: LOST\n");
error = EIO;
}
if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(newnofp, vfs_context_thread(ctx));
nfs_open_file_destroy(newnofp);
newnofp = NULL;
if (!error)
goto restart;
}
if (!error)
error = nfs_open_file_set_busy(newnofp, vfs_context_thread(ctx));
if (error) {
if (newnofp)
nfs_open_file_destroy(newnofp);
newnofp = NULL;
goto out;
}
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
denyMode = NFS_OPEN_SHARE_DENY_NONE;
error = nfs4_open_rpc(newnofp, ctx, cnp, vap, dvp, vpp, NFS_OPEN_CREATE, accessMode, denyMode);
if ((error == EACCES) && vap && !(vap->va_vaflags & VA_EXCLUSIVE) &&
VATTR_IS_ACTIVE(vap, va_mode) && !(vap->va_mode & S_IWUSR)) {
struct vnode_attr vattr;
int error2 = nfs_lookitup(VTONFS(dvp), cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error2 && np) {
nfs_node_unlock(np);
*vpp = NFSTOV(np);
if (vnode_vtype(NFSTOV(np)) == VREG) {
VATTR_INIT(&vattr);
VATTR_SET(&vattr, va_mode, (vap->va_mode | S_IWUSR));
if (!nfs4_setattr_rpc(np, &vattr, ctx)) {
error2 = nfs4_open_rpc(newnofp, ctx, cnp, NULL, dvp, vpp, NFS_OPEN_NOCREATE, accessMode, denyMode);
VATTR_INIT(&vattr);
VATTR_SET(&vattr, va_mode, vap->va_mode);
nfs4_setattr_rpc(np, &vattr, ctx);
if (!error2)
error = 0;
}
}
if (error) {
vnode_put(*vpp);
*vpp = NULL;
}
}
}
if (!error && !*vpp) {
printf("nfs4_open_rpc returned without a node?\n");
error = EIO;
}
if (error) {
nfs_open_file_clear_busy(newnofp);
nfs_open_file_destroy(newnofp);
newnofp = NULL;
goto out;
}
np = VTONFS(*vpp);
nfs_open_file_add_open(newnofp, accessMode, denyMode, 0);
nofp = newnofp;
error = nfs_open_file_find_internal(np, noop, &nofp, 0, 0, 0);
if (error) {
printf("nfs_open_file_find_internal failed! %d\n", error);
goto out;
} else if (nofp != newnofp) {
busyerror = nfs_open_file_set_busy(nofp, NULL);
nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
nofp->nof_stateid = newnofp->nof_stateid;
if (newnofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)
nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
nfs_open_file_clear_busy(newnofp);
nfs_open_file_destroy(newnofp);
}
newnofp = NULL;
nofp->nof_flags |= NFS_OPEN_FILE_CREATE;
nofp->nof_creator = current_thread();
out:
if (nofp && !busyerror)
nfs_open_file_clear_busy(nofp);
if (nfs_mount_state_in_use_end(nmp, error)) {
nofp = newnofp = NULL;
busyerror = 0;
goto restart;
}
if (noop)
nfs_open_owner_rele(noop);
return (error);
}
int
nfs4_create_rpc(
vfs_context_t ctx,
nfsnode_t dnp,
struct componentname *cnp,
struct vnode_attr *vap,
int type,
char *link,
nfsnode_t *npp)
{
struct nfsmount *nmp;
struct nfs_vattr nvattr;
int error = 0, create_error = EIO, lockerror = ENOENT, busyerror = ENOENT, status;
int nfsvers, namedattrs, numops;
u_int64_t xid, savedxid = 0;
nfsnode_t np = NULL;
vnode_t newvp = NULL;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
const char *tag;
nfs_specdata sd;
fhandle_t fh;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(dnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
if (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
sd.specdata1 = sd.specdata2 = 0;
switch (type) {
case NFLNK:
tag = "symlink";
break;
case NFBLK:
case NFCHR:
tag = "mknod";
if (!VATTR_IS_ACTIVE(vap, va_rdev))
return (EINVAL);
sd.specdata1 = major(vap->va_rdev);
sd.specdata2 = minor(vap->va_rdev);
break;
case NFSOCK:
case NFFIFO:
tag = "mknod";
break;
case NFDIR:
tag = "mkdir";
break;
default:
return (EINVAL);
}
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
if (!namedattrs)
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
NFSREQ_SECINFO_SET(&si, dnp, NULL, 0, NULL, 0);
NVATTR_INIT(&nvattr);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 6;
nfsm_chain_build_alloc_init(error, &nmreq, 66 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, tag, nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_CREATE);
nfsm_chain_add_32(error, &nmreq, type);
if (type == NFLNK) {
nfsm_chain_add_name(error, &nmreq, link, strlen(link), nmp);
} else if ((type == NFBLK) || (type == NFCHR)) {
nfsm_chain_add_32(error, &nmreq, sd.specdata1);
nfsm_chain_add_32(error, &nmreq, sd.specdata2);
}
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
nfsm_chain_add_fattr4(error, &nmreq, vap, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_supported(error, &nmreq, bitmap, nmp, NULL);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, dnp);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
if (!error) {
if (!namedattrs)
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
nfsmout_if(error);
nfsm_chain_op_check(error, &nmrep, NFS_OP_CREATE);
nfsm_chain_check_change_info(error, &nmrep, dnp);
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
create_error = error;
nfsmout_if(error);
nfs_vattr_set_supported(bitmap, vap);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE)) {
printf("nfs: create/%s didn't return filehandle? %s\n", tag, cnp->cn_nameptr);
error = EBADRPC;
goto nfsmout;
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
savedxid = xid;
nfsm_chain_loadattr(error, &nmrep, dnp, nfsvers, &xid);
if (error)
NATTRINVALIDATE(dnp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
if (!create_error && (dnp->n_flag & NNEGNCENTRIES)) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(NFSTOV(dnp));
}
dnp->n_flag |= NMODIFIED;
nfs_node_unlock(dnp);
nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
}
if (!error && fh.fh_len) {
xid = savedxid;
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
if (!error)
newvp = NFSTOV(np);
}
NVATTR_CLEANUP(&nvattr);
if (!namedattrs)
nfs_dulookup_finish(&dul, dnp, ctx);
if ((create_error == EEXIST) || (!create_error && !newvp)) {
error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error) {
newvp = NFSTOV(np);
if (vnode_vtype(newvp) != nfstov_type(type, nfsvers))
error = EEXIST;
}
}
if (!busyerror)
nfs_node_clear_busy(dnp);
if (error) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
}
} else {
nfs_node_unlock(np);
*npp = np;
}
return (error);
}
int
nfs4_vnop_mknod(
struct vnop_mknod_args *ap)
{
nfsnode_t np = NULL;
struct nfsmount *nmp;
int error;
nmp = VTONMP(ap->a_dvp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!VATTR_IS_ACTIVE(ap->a_vap, va_type))
return (EINVAL);
switch (ap->a_vap->va_type) {
case VBLK:
case VCHR:
case VFIFO:
case VSOCK:
break;
default:
return (ENOTSUP);
}
error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
vtonfs_type(ap->a_vap->va_type, nmp->nm_vers), NULL, &np);
if (!error)
*ap->a_vpp = NFSTOV(np);
return (error);
}
int
nfs4_vnop_mkdir(
struct vnop_mkdir_args *ap)
{
nfsnode_t np = NULL;
int error;
error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
NFDIR, NULL, &np);
if (!error)
*ap->a_vpp = NFSTOV(np);
return (error);
}
int
nfs4_vnop_symlink(
struct vnop_symlink_args *ap)
{
nfsnode_t np = NULL;
int error;
error = nfs4_create_rpc(ap->a_context, VTONFS(ap->a_dvp), ap->a_cnp, ap->a_vap,
NFLNK, ap->a_target, &np);
if (!error)
*ap->a_vpp = NFSTOV(np);
return (error);
}
int
nfs4_vnop_link(
struct vnop_link_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
vnode_t tdvp = ap->a_tdvp;
struct componentname *cnp = ap->a_cnp;
int error = 0, lockerror = ENOENT, status;
struct nfsmount *nmp;
nfsnode_t np = VTONFS(vp);
nfsnode_t tdnp = VTONFS(tdvp);
int nfsvers, numops;
u_int64_t xid, savedxid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq_secinfo_args si;
if (vnode_mount(vp) != vnode_mount(tdvp))
return (EXDEV);
nmp = VTONMP(vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
if (tdnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (EINVAL);
nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
if ((error = nfs_node_set_busy2(tdnp, np, vfs_context_thread(ctx))))
return (error);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
numops = 7;
nfsm_chain_build_alloc_init(error, &nmreq, 29 * NFSX_UNSIGNED + cnp->cn_namelen);
nfsm_chain_add_compound_header(error, &nmreq, "link", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_LINK);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, tdnp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_supported(error, &nmreq, nfs_getattr_bitmap, nmp, np);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request(tdnp, NULL, &nmreq, NFSPROC4_COMPOUND, ctx, &si, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock2(tdnp, np))) {
error = lockerror;
goto nfsmout;
}
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_LINK);
nfsm_chain_check_change_info(error, &nmrep, tdnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
savedxid = xid;
nfsm_chain_loadattr(error, &nmrep, tdnp, nfsvers, &xid);
if (error)
NATTRINVALIDATE(tdnp);
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
xid = savedxid;
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
if (error)
NATTRINVALIDATE(np);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror)
tdnp->n_flag |= NMODIFIED;
if (error == EEXIST)
error = 0;
if (!error && (tdnp->n_flag & NNEGNCENTRIES)) {
tdnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(tdvp);
}
if (!lockerror)
nfs_node_unlock2(tdnp, np);
nfs_node_clear_busy2(tdnp, np);
return (error);
}
int
nfs4_vnop_rmdir(
struct vnop_rmdir_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
vnode_t dvp = ap->a_dvp;
struct componentname *cnp = ap->a_cnp;
struct nfsmount *nmp;
int error = 0, namedattrs;
nfsnode_t np = VTONFS(vp);
nfsnode_t dnp = VTONFS(dvp);
struct nfs_dulookup dul;
if (vnode_vtype(vp) != VDIR)
return (EINVAL);
nmp = NFSTONMP(dnp);
if (nfs_mount_gone(nmp))
return (ENXIO);
namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
if ((error = nfs_node_set_busy2(dnp, np, vfs_context_thread(ctx))))
return (error);
if (!namedattrs) {
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
nfs_dulookup_start(&dul, dnp, ctx);
}
error = nfs4_remove_rpc(dnp, cnp->cn_nameptr, cnp->cn_namelen,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
nfs_name_cache_purge(dnp, np, cnp, ctx);
nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
if (!namedattrs)
nfs_dulookup_finish(&dul, dnp, ctx);
nfs_node_clear_busy2(dnp, np);
if (error == ENOENT)
error = 0;
if (!error) {
lck_mtx_lock(nfs_node_hash_mutex);
if (np->n_hflag & NHHASHED) {
LIST_REMOVE(np, n_hash);
np->n_hflag &= ~NHHASHED;
FSDBG(266, 0, np, np->n_flag, 0xb1eb1e);
}
lck_mtx_unlock(nfs_node_hash_mutex);
}
return (error);
}
nfsnode_t
nfs4_named_attr_dir_get(nfsnode_t np, int fetch, vfs_context_t ctx)
{
nfsnode_t adnp = NULL;
struct nfsmount *nmp;
int error = 0, status, numops;
struct nfsm_chain nmreq, nmrep;
u_int64_t xid;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN];
fhandle_t fh;
struct nfs_vattr nvattr;
struct componentname cn;
struct nfsreq rq, *req = &rq;
struct nfsreq_secinfo_args si;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (NULL);
if (np->n_vattr.nva_flags & NFS_FFLAG_TRIGGER_REFERRAL)
return (NULL);
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
NVATTR_INIT(&nvattr);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(_PATH_FORKSPECIFIER, const, char *);
cn.cn_namelen = strlen(_PATH_FORKSPECIFIER);
cn.cn_nameiop = LOOKUP;
if (np->n_attrdirfh) {
error = nfs_nget(nmp->nm_mountp, NULL, &cn, np->n_attrdirfh+1, *np->n_attrdirfh,
NULL, NULL, RPCAUTH_UNKNOWN, NG_NOCREATE, &adnp);
if (adnp)
goto nfsmout;
}
if (!fetch) {
error = ENOENT;
goto nfsmout;
}
numops = 3;
nfsm_chain_build_alloc_init(error, &nmreq, 22 * NFSX_UNSIGNED);
nfsm_chain_add_compound_header(error, &nmreq, "openattr", nmp->nm_minor_vers, numops);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
nfsm_chain_add_32(error, &nmreq, 0);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(np, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, 0, NULL, &req);
if (!error)
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) || !fh.fh_len) {
error = ENOENT;
goto nfsmout;
}
if (!np->n_attrdirfh || (*np->n_attrdirfh != fh.fh_len)) {
if (np->n_attrdirfh)
FREE(np->n_attrdirfh, M_TEMP);
MALLOC(np->n_attrdirfh, u_char*, fh.fh_len+1, M_TEMP, M_WAITOK);
}
if (!np->n_attrdirfh) {
error = ENOMEM;
goto nfsmout;
}
*np->n_attrdirfh = fh.fh_len;
bcopy(fh.fh_data, np->n_attrdirfh+1, fh.fh_len);
error = nfs_nget(NFSTOMP(np), NULL, &cn, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, 0, &adnp);
nfsmout:
NVATTR_CLEANUP(&nvattr);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (adnp) {
if (adnp->n_vattr.nva_type != VDIR)
error = EINVAL;
if (!(adnp->n_vattr.nva_flags & NFS_FFLAG_IS_ATTR))
error = EINVAL;
nfs_node_unlock(adnp);
if (error)
vnode_put(NFSTOV(adnp));
}
return (error ? NULL : adnp);
}
#define NFS_GET_NAMED_ATTR_CREATE 0x1
#define NFS_GET_NAMED_ATTR_CREATE_GUARDED 0x2
#define NFS_GET_NAMED_ATTR_TRUNCATE 0x4
#define NFS_GET_NAMED_ATTR_PREFETCH 0x8
int
nfs4_named_attr_get(
nfsnode_t np,
struct componentname *cnp,
uint32_t accessMode,
int flags,
vfs_context_t ctx,
nfsnode_t *anpp,
struct nfs_open_file **nofpp)
{
struct nfsmount *nmp;
int error = 0, open_error = EIO;
int inuse = 0, adlockerror = ENOENT, busyerror = ENOENT, adbusyerror = ENOENT, nofpbusyerror = ENOENT;
int create, guarded, prefetch, truncate, noopbusy = 0;
int open, status, numops, hadattrdir, negnamecache;
struct nfs_vattr nvattr;
struct vnode_attr vattr;
nfsnode_t adnp = NULL, anp = NULL;
vnode_t avp = NULL;
u_int64_t xid, savedxid = 0;
struct nfsm_chain nmreq, nmrep;
uint32_t bitmap[NFS_ATTR_BITMAP_LEN], bmlen;
uint32_t denyMode, rflags, delegation, recall, eof, rlen, retlen;
nfs_stateid stateid, dstateid;
fhandle_t fh;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *newnofp = NULL, *nofp = NULL;
struct vnop_access_args naa;
thread_t thd;
kauth_cred_t cred;
struct timeval now;
char sbuf[64], *s;
uint32_t ace_type, ace_flags, ace_mask, len, slen;
struct kauth_ace ace;
struct nfsreq rq, *req = &rq;
struct nfsreq_secinfo_args si;
*anpp = NULL;
fh.fh_len = 0;
rflags = delegation = recall = eof = rlen = retlen = 0;
ace.ace_flags = 0;
s = sbuf;
slen = sizeof(sbuf);
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
NVATTR_INIT(&nvattr);
negnamecache = !NMFLAG(nmp, NONEGNAMECACHE);
thd = vfs_context_thread(ctx);
cred = vfs_context_ucred(ctx);
create = (flags & NFS_GET_NAMED_ATTR_CREATE) ? NFS_OPEN_CREATE : NFS_OPEN_NOCREATE;
guarded = (flags & NFS_GET_NAMED_ATTR_CREATE_GUARDED) ? NFS_CREATE_GUARDED : NFS_CREATE_UNCHECKED;
truncate = (flags & NFS_GET_NAMED_ATTR_TRUNCATE);
prefetch = (flags & NFS_GET_NAMED_ATTR_PREFETCH);
if (!create) {
error = nfs_getattr(np, &nvattr, ctx, NGA_CACHED);
if (error)
return (error);
if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
!(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
return (ENOATTR);
} else if (accessMode == NFS_OPEN_SHARE_ACCESS_NONE) {
printf("nfs4_named_attr_get: create with no access %s\n", cnp->cn_nameptr);
accessMode = NFS_OPEN_SHARE_ACCESS_READ;
}
open = (accessMode != NFS_OPEN_SHARE_ACCESS_NONE);
if (open) {
denyMode = NFS_OPEN_SHARE_DENY_NONE;
if (prefetch && guarded)
prefetch = 0;
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 1);
if (!noop)
return (ENOMEM);
}
if ((error = busyerror = nfs_node_set_busy(np, vfs_context_thread(ctx))))
return (error);
adnp = nfs4_named_attr_dir_get(np, 0, ctx);
hadattrdir = (adnp != NULL);
if (prefetch) {
microuptime(&now);
stateid.seqid = stateid.other[0] = stateid.other[1] = stateid.other[2] = 0;
rlen = MIN(nmp->nm_rsize, nmp->nm_biosize);
}
NFSREQ_SECINFO_SET(&si, np, NULL, 0, NULL, 0);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
if (hadattrdir) {
if ((error = adbusyerror = nfs_node_set_busy(adnp, vfs_context_thread(ctx))))
goto nfsmout;
error = nfs_getattr(adnp, NULL, ctx, NGA_CACHED);
nfsmout_if(error);
error = cache_lookup(NFSTOV(adnp), &avp, cnp);
switch (error) {
case ENOENT:
goto nfsmout;
case 0:
error = nfs_dir_buf_cache_lookup(adnp, &anp, cnp, ctx, 0);
if (!error && anp) {
*anpp = anp;
error = -1;
}
if (error != -1)
break;
case -1:
OSAddAtomic64(1, &nfsstats.lookupcache_hits);
if (!anp && avp)
*anpp = anp = VTONFS(avp);
nfs_node_clear_busy(adnp);
adbusyerror = ENOENT;
naa.a_desc = &vnop_access_desc;
naa.a_vp = NFSTOV(adnp);
naa.a_action = KAUTH_VNODE_SEARCH;
naa.a_context = ctx;
error = nfs_vnop_access(&naa);
default:
if (!error && guarded) {
error = EEXIST;
vnode_put(NFSTOV(anp));
*anpp = anp = NULL;
}
if (error || !open)
goto nfsmout;
}
}
if (open) {
restart:
error = nfs_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error) {
nfs_open_owner_rele(noop);
noop = NULL;
goto nfsmout;
}
inuse = 1;
error = nfs_open_file_find(anp, noop, &newnofp, 0, 0, 1);
if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_LOST)) {
printf("nfs4_named_attr_get: LOST %d %s\n", kauth_cred_getuid(noop->noo_cred), cnp->cn_nameptr);
error = EIO;
}
if (!error && (newnofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(newnofp, vfs_context_thread(ctx));
nfs_open_file_destroy(newnofp);
newnofp = NULL;
if (!error)
goto restart;
}
if (!error)
error = nfs_open_file_set_busy(newnofp, vfs_context_thread(ctx));
if (error) {
if (newnofp)
nfs_open_file_destroy(newnofp);
newnofp = NULL;
goto nfsmout;
}
if (anp) {
open_error = error = nfs4_open(anp, newnofp, accessMode, denyMode, ctx);
if (!error) {
nofp = newnofp;
nofpbusyerror = 0;
newnofp = NULL;
if (nofpp)
*nofpp = nofp;
}
goto nfsmout;
}
}
if (open) {
if ((error = nfs_open_owner_set_busy(noop, thd)))
goto nfsmout;
noopbusy = 1;
}
numops = 5;
if (!hadattrdir)
numops += 3; if (prefetch)
numops += 4; nfsm_chain_build_alloc_init(error, &nmreq, 64 * NFSX_UNSIGNED + cnp->cn_namelen);
nfsm_chain_add_compound_header(error, &nmreq, "getnamedattr", nmp->nm_minor_vers, numops);
if (hadattrdir) {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, adnp->n_fhp, adnp->n_fhsize);
} else {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
nfsm_chain_add_32(error, &nmreq, create ? 1 : 0);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
}
if (open) {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPEN);
nfsm_chain_add_32(error, &nmreq, noop->noo_seqid);
nfsm_chain_add_32(error, &nmreq, accessMode);
nfsm_chain_add_32(error, &nmreq, denyMode);
nfsm_chain_add_64(error, &nmreq, nmp->nm_clientid);
nfsm_chain_add_32(error, &nmreq, NFSX_UNSIGNED);
nfsm_chain_add_32(error, &nmreq, kauth_cred_getuid(noop->noo_cred));
nfsm_chain_add_32(error, &nmreq, create);
if (create) {
nfsm_chain_add_32(error, &nmreq, guarded);
VATTR_INIT(&vattr);
if (truncate)
VATTR_SET(&vattr, va_data_size, 0);
nfsm_chain_add_fattr4(error, &nmreq, &vattr, nmp);
}
nfsm_chain_add_32(error, &nmreq, NFS_CLAIM_NULL);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
} else {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_LOOKUP);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
}
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
NFS_COPY_ATTRIBUTES(nfs_getattr_bitmap, bitmap);
NFS_BITMAP_SET(bitmap, NFS_FATTR_FILEHANDLE);
nfsm_chain_add_bitmap_masked(error, &nmreq, bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
if (prefetch) {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_SAVEFH);
}
if (hadattrdir) {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, adnp->n_fhp, adnp->n_fhsize);
} else {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_PUTFH);
nfsm_chain_add_fh(error, &nmreq, nmp->nm_vers, np->n_fhp, np->n_fhsize);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_OPENATTR);
nfsm_chain_add_32(error, &nmreq, 0);
}
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_GETATTR);
nfsm_chain_add_bitmap_masked(error, &nmreq, nfs_getattr_bitmap,
NFS_ATTR_BITMAP_LEN, nmp->nm_fsattr.nfsa_supp_attr);
if (prefetch) {
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_RESTOREFH);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_NVERIFY);
VATTR_INIT(&vattr);
VATTR_SET(&vattr, va_data_size, 0);
nfsm_chain_add_fattr4(error, &nmreq, &vattr, nmp);
numops--;
nfsm_chain_add_32(error, &nmreq, NFS_OP_READ);
nfsm_chain_add_stateid(error, &nmreq, &stateid);
nfsm_chain_add_64(error, &nmreq, 0);
nfsm_chain_add_32(error, &nmreq, rlen);
}
nfsm_chain_build_done(error, &nmreq);
nfsm_assert(error, (numops == 0), EPROTO);
nfsmout_if(error);
error = nfs_request_async(hadattrdir ? adnp : np, NULL, &nmreq, NFSPROC4_COMPOUND,
vfs_context_thread(ctx), vfs_context_ucred(ctx), &si, open ? R_NOINTR: 0, NULL, &req);
if (!error)
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
if (hadattrdir && ((adlockerror = nfs_node_lock(adnp))))
error = adlockerror;
savedxid = xid;
nfsm_chain_skip_tag(error, &nmrep);
nfsm_chain_get_32(error, &nmrep, numops);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
if (!hadattrdir) {
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) && fh.fh_len) {
if (!np->n_attrdirfh || (*np->n_attrdirfh != fh.fh_len)) {
if (np->n_attrdirfh)
FREE(np->n_attrdirfh, M_TEMP);
MALLOC(np->n_attrdirfh, u_char*, fh.fh_len+1, M_TEMP, M_WAITOK);
}
if (np->n_attrdirfh) {
*np->n_attrdirfh = fh.fh_len;
bcopy(fh.fh_data, np->n_attrdirfh+1, fh.fh_len);
struct componentname cn;
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(_PATH_FORKSPECIFIER, const, char *);
cn.cn_namelen = strlen(_PATH_FORKSPECIFIER);
cn.cn_nameiop = LOOKUP;
error = nfs_nget(NFSTOMP(np), NULL, &cn, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, 0, &adnp);
if (!error) {
adlockerror = 0;
SET(adnp->n_flag, NBUSY);
adbusyerror = 0;
}
error = 0;
}
}
NVATTR_CLEANUP(&nvattr);
fh.fh_len = 0;
}
if (open) {
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPEN);
nfs_owner_seqid_increment(noop, NULL, error);
nfsm_chain_get_stateid(error, &nmrep, &newnofp->nof_stateid);
nfsm_chain_check_change_info(error, &nmrep, adnp);
nfsm_chain_get_32(error, &nmrep, rflags);
bmlen = NFS_ATTR_BITMAP_LEN;
nfsm_chain_get_bitmap(error, &nmrep, bitmap, bmlen);
nfsm_chain_get_32(error, &nmrep, delegation);
if (!error)
switch (delegation) {
case NFS_OPEN_DELEGATE_NONE:
break;
case NFS_OPEN_DELEGATE_READ:
case NFS_OPEN_DELEGATE_WRITE:
nfsm_chain_get_stateid(error, &nmrep, &dstateid);
nfsm_chain_get_32(error, &nmrep, recall);
if (delegation == NFS_OPEN_DELEGATE_WRITE) nfsm_chain_adv(error, &nmrep, 3 * NFSX_UNSIGNED);
ace_type = ace_flags = ace_mask = len = 0;
nfsm_chain_get_32(error, &nmrep, ace_type);
nfsm_chain_get_32(error, &nmrep, ace_flags);
nfsm_chain_get_32(error, &nmrep, ace_mask);
nfsm_chain_get_32(error, &nmrep, len);
ace.ace_flags = nfs4_ace_nfstype_to_vfstype(ace_type, &error);
ace.ace_flags |= nfs4_ace_nfsflags_to_vfsflags(ace_flags);
ace.ace_rights = nfs4_ace_nfsmask_to_vfsrights(ace_mask);
if (!error && (len >= slen)) {
MALLOC(s, char*, len+1, M_TEMP, M_WAITOK);
if (s)
slen = len+1;
else
ace.ace_flags = 0;
}
if (s)
nfsm_chain_get_opaque(error, &nmrep, len, s);
else
nfsm_chain_adv(error, &nmrep, nfsm_rndup(len));
if (!error && s) {
s[len] = '\0';
if (nfs4_id2guid(s, &ace.ace_applicable, (ace_flags & NFS_ACE_IDENTIFIER_GROUP)))
ace.ace_flags = 0;
}
if (error || !s)
ace.ace_flags = 0;
if (s && (s != sbuf))
FREE(s, M_TEMP);
break;
default:
error = EBADRPC;
break;
}
open_error = error;
} else {
nfsm_chain_op_check(error, &nmrep, NFS_OP_LOOKUP);
}
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
error = nfs4_parsefattr(&nmrep, NULL, &nvattr, &fh, NULL, NULL);
nfsmout_if(error);
if (!NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_FILEHANDLE) || !fh.fh_len) {
error = EIO;
goto nfsmout;
}
if (prefetch)
nfsm_chain_op_check(error, &nmrep, NFS_OP_SAVEFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_PUTFH);
if (!hadattrdir)
nfsm_chain_op_check(error, &nmrep, NFS_OP_OPENATTR);
nfsm_chain_op_check(error, &nmrep, NFS_OP_GETATTR);
nfsmout_if(error);
xid = savedxid;
nfsm_chain_loadattr(error, &nmrep, adnp, nmp->nm_vers, &xid);
nfsmout_if(error);
if (open) {
if (rflags & NFS_OPEN_RESULT_LOCKTYPE_POSIX)
newnofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
if (rflags & NFS_OPEN_RESULT_CONFIRM) {
if (adnp) {
nfs_node_unlock(adnp);
adlockerror = ENOENT;
}
NVATTR_CLEANUP(&nvattr);
error = nfs4_open_confirm_rpc(nmp, adnp ? adnp : np, fh.fh_data, fh.fh_len, noop, &newnofp->nof_stateid, thd, cred, &nvattr, &xid);
nfsmout_if(error);
savedxid = xid;
if ((adlockerror = nfs_node_lock(adnp)))
error = adlockerror;
}
}
nfsmout:
if (open && adnp && !adlockerror) {
if (!open_error && (adnp->n_flag & NNEGNCENTRIES)) {
adnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(NFSTOV(adnp));
}
adnp->n_flag |= NMODIFIED;
nfs_node_unlock(adnp);
adlockerror = ENOENT;
nfs_getattr(adnp, NULL, ctx, NGA_CACHED);
}
if (adnp && !adlockerror && (error == ENOENT) &&
(cnp->cn_flags & MAKEENTRY) && (cnp->cn_nameiop != CREATE) && negnamecache) {
cache_enter(NFSTOV(adnp), NULL, cnp);
adnp->n_flag |= NNEGNCENTRIES;
}
if (adnp && !adlockerror) {
nfs_node_unlock(adnp);
adlockerror = ENOENT;
}
if (!error && !anp && fh.fh_len) {
xid = savedxid;
error = nfs_nget(NFSTOMP(np), adnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &anp);
if (!error) {
*anpp = anp;
nfs_node_unlock(anp);
}
if (!error && open) {
nfs_open_file_add_open(newnofp, accessMode, denyMode, 0);
nofp = newnofp;
error = nfs_open_file_find_internal(anp, noop, &nofp, 0, 0, 0);
if (error) {
printf("nfs_open_file_find_internal failed! %d\n", error);
nofp = NULL;
} else if (nofp != newnofp) {
nofpbusyerror = nfs_open_file_set_busy(nofp, NULL);
nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
nofp->nof_stateid = newnofp->nof_stateid;
if (newnofp->nof_flags & NFS_OPEN_FILE_POSIXLOCK)
nofp->nof_flags |= NFS_OPEN_FILE_POSIXLOCK;
nfs_open_file_clear_busy(newnofp);
nfs_open_file_destroy(newnofp);
newnofp = NULL;
}
if (!error) {
newnofp = NULL;
nofpbusyerror = 0;
nofp->nof_flags |= NFS_OPEN_FILE_CREATE;
nofp->nof_creator = current_thread();
if (nofpp)
*nofpp = nofp;
}
}
}
NVATTR_CLEANUP(&nvattr);
if (open && ((delegation == NFS_OPEN_DELEGATE_READ) || (delegation == NFS_OPEN_DELEGATE_WRITE))) {
if (!error && anp && !recall) {
lck_mtx_lock(&anp->n_openlock);
anp->n_openflags &= ~N_DELEG_MASK;
anp->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
anp->n_dstateid = dstateid;
anp->n_dace = ace;
if (anp->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (anp->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, anp, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&anp->n_openlock);
} else {
if (anp) {
if (NFS_CMPFH(anp, fh.fh_data, fh.fh_len)) {
lck_mtx_lock(&anp->n_openlock);
anp->n_openflags &= ~N_DELEG_MASK;
anp->n_openflags |= ((delegation == NFS_OPEN_DELEGATE_READ) ? N_DELEG_READ : N_DELEG_WRITE);
anp->n_dstateid = dstateid;
anp->n_dace = ace;
if (anp->n_dlink.tqe_next == NFSNOLIST) {
lck_mtx_lock(&nmp->nm_lock);
if (anp->n_dlink.tqe_next == NFSNOLIST)
TAILQ_INSERT_TAIL(&nmp->nm_delegations, anp, n_dlink);
lck_mtx_unlock(&nmp->nm_lock);
}
lck_mtx_unlock(&anp->n_openlock);
fh.fh_len = 0;
}
nfs4_delegation_return(anp, 0, thd, cred);
}
if (fh.fh_len)
nfs4_delegreturn_rpc(nmp, fh.fh_data, fh.fh_len, &dstateid, 0, thd, cred);
}
}
if (open) {
if (newnofp) {
nfs_open_file_clear_busy(newnofp);
nfs_open_file_destroy(newnofp);
newnofp = NULL;
} else if (nofp && !nofpbusyerror) {
nfs_open_file_clear_busy(nofp);
nofpbusyerror = ENOENT;
}
if (inuse && nfs_mount_state_in_use_end(nmp, error)) {
inuse = 0;
nofp = newnofp = NULL;
rflags = delegation = recall = eof = rlen = retlen = 0;
ace.ace_flags = 0;
s = sbuf;
slen = sizeof(sbuf);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (anp) {
vnode_put(NFSTOV(anp));
*anpp = anp = NULL;
}
hadattrdir = (adnp != NULL);
if (noopbusy) {
nfs_open_owner_clear_busy(noop);
noopbusy = 0;
}
goto restart;
}
if (noop) {
if (noopbusy) {
nfs_open_owner_clear_busy(noop);
noopbusy = 0;
}
nfs_open_owner_rele(noop);
}
}
if (!error && prefetch && nmrep.nmc_mhead) {
nfsm_chain_op_check(error, &nmrep, NFS_OP_RESTOREFH);
nfsm_chain_op_check(error, &nmrep, NFS_OP_NVERIFY);
nfsm_chain_op_check(error, &nmrep, NFS_OP_READ);
nfsm_chain_get_32(error, &nmrep, eof);
nfsm_chain_get_32(error, &nmrep, retlen);
if (!error && anp) {
struct nfsbuf *bp = NULL;
int lastpg;
uint32_t pagemask;
retlen = MIN(retlen, rlen);
if (ISSET(anp->n_flag, NUPDATESIZE))
nfs_data_update_size(anp, 0);
if (!(error = nfs_node_lock(anp))) {
if (anp->n_flag & NNEEDINVALIDATE) {
anp->n_flag &= ~NNEEDINVALIDATE;
nfs_node_unlock(anp);
error = nfs_vinvalbuf(NFSTOV(anp), V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
if (!error)
error = EIO;
} else {
nfs_node_unlock(anp);
}
}
lastpg = (trunc_page_32(retlen) - 1) / PAGE_SIZE;
pagemask = ((1 << (lastpg + 1)) - 1);
if (!error)
error = nfs_buf_get(anp, 0, nmp->nm_biosize, thd, NBLK_READ|NBLK_NOWAIT, &bp);
if (!error && bp && !bp->nb_dirtyoff && !(bp->nb_dirty & pagemask) &&
timevalcmp(&anp->n_lastio, &now, <)) {
OSAddAtomic64(1, &nfsstats.read_bios);
CLR(bp->nb_flags, (NB_DONE|NB_ASYNC));
SET(bp->nb_flags, NB_READ);
NFS_BUF_MAP(bp);
nfsm_chain_get_opaque(error, &nmrep, retlen, bp->nb_data);
if (error) {
bp->nb_error = error;
SET(bp->nb_flags, NB_ERROR);
} else {
bp->nb_offio = 0;
bp->nb_endio = rlen;
if ((retlen > 0) && (bp->nb_endio < (int)retlen))
bp->nb_endio = retlen;
if (eof || (retlen == 0)) {
off_t rpcrem, eofrem, rem;
rpcrem = (rlen - retlen);
eofrem = anp->n_size - (NBOFF(bp) + retlen);
rem = (rpcrem < eofrem) ? rpcrem : eofrem;
if (rem > 0)
bzero(bp->nb_data + retlen, rem);
} else if ((retlen < rlen) && !ISSET(bp->nb_flags, NB_ERROR)) {
SET(bp->nb_flags, NB_INVAL);
}
}
nfs_buf_read_finish(bp);
microuptime(&anp->n_lastio);
}
if (bp)
nfs_buf_release(bp, 1);
}
error = 0;
}
if (adnp && !adbusyerror) {
nfs_node_clear_busy(adnp);
adbusyerror = ENOENT;
}
if (!busyerror) {
nfs_node_clear_busy(np);
busyerror = ENOENT;
}
if (adnp)
vnode_put(NFSTOV(adnp));
if (error && *anpp) {
vnode_put(NFSTOV(*anpp));
*anpp = NULL;
}
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs4_named_attr_remove(nfsnode_t np, nfsnode_t anp, const char *name, vfs_context_t ctx)
{
nfsnode_t adnp = NULL;
struct nfsmount *nmp;
struct componentname cn;
struct vnop_remove_args vra;
int error, putanp = 0;
nmp = NFSTONMP(np);
if (nfs_mount_gone(nmp))
return (ENXIO);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(name, const, char *);
cn.cn_namelen = strlen(name);
cn.cn_nameiop = DELETE;
cn.cn_flags = 0;
if (!anp) {
error = nfs4_named_attr_get(np, &cn, NFS_OPEN_SHARE_ACCESS_NONE,
0, ctx, &anp, NULL);
if ((!error && !anp) || (error == ENOATTR))
error = ENOENT;
if (error) {
if (anp) {
vnode_put(NFSTOV(anp));
anp = NULL;
}
goto out;
}
putanp = 1;
}
if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx))))
goto out;
adnp = nfs4_named_attr_dir_get(np, 1, ctx);
nfs_node_clear_busy(np);
if (!adnp) {
error = ENOENT;
goto out;
}
vra.a_desc = &vnop_remove_desc;
vra.a_dvp = NFSTOV(adnp);
vra.a_vp = NFSTOV(anp);
vra.a_cnp = &cn;
vra.a_flags = 0;
vra.a_context = ctx;
error = nfs_vnop_remove(&vra);
out:
if (adnp)
vnode_put(NFSTOV(adnp));
if (putanp)
vnode_put(NFSTOV(anp));
return (error);
}
int
nfs4_vnop_getxattr(
struct vnop_getxattr_args *ap)
{
vfs_context_t ctx = ap->a_context;
struct nfsmount *nmp;
struct nfs_vattr nvattr;
struct componentname cn;
nfsnode_t anp;
int error = 0, isrsrcfork;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
error = nfs_getattr(VTONFS(ap->a_vp), &nvattr, ctx, NGA_CACHED);
if (error)
return (error);
if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
!(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
return (ENOATTR);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
cn.cn_namelen = strlen(ap->a_name);
cn.cn_nameiop = LOOKUP;
cn.cn_flags = MAKEENTRY;
isrsrcfork = (bcmp(ap->a_name, XATTR_RESOURCEFORK_NAME, sizeof(XATTR_RESOURCEFORK_NAME)) == 0);
error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_NONE,
!isrsrcfork ? NFS_GET_NAMED_ATTR_PREFETCH : 0, ctx, &anp, NULL);
if ((!error && !anp) || (error == ENOENT))
error = ENOATTR;
if (!error) {
if (ap->a_uio)
error = nfs_bioread(anp, ap->a_uio, 0, ctx);
else
*ap->a_size = anp->n_size;
}
if (anp)
vnode_put(NFSTOV(anp));
return (error);
}
int
nfs4_vnop_setxattr(
struct vnop_setxattr_args *ap)
{
vfs_context_t ctx = ap->a_context;
int options = ap->a_options;
uio_t uio = ap->a_uio;
const char *name = ap->a_name;
struct nfsmount *nmp;
struct componentname cn;
nfsnode_t anp = NULL;
int error = 0, closeerror = 0, flags, isrsrcfork, isfinderinfo, empty = 0, i;
#define FINDERINFOSIZE 32
uint8_t finfo[FINDERINFOSIZE];
uint32_t *finfop;
struct nfs_open_file *nofp = NULL;
char uio_buf [ UIO_SIZEOF(1) ];
uio_t auio;
struct vnop_write_args vwa;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
if ((options & XATTR_CREATE) && (options & XATTR_REPLACE))
return (EINVAL);
if (uio_iovcnt(uio) > 1) {
printf("nfs4_vnop_setxattr: iovcnt > 1\n");
return (EINVAL);
}
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(name, const, char *);
cn.cn_namelen = strlen(name);
cn.cn_nameiop = CREATE;
cn.cn_flags = MAKEENTRY;
isfinderinfo = (bcmp(name, XATTR_FINDERINFO_NAME, sizeof(XATTR_FINDERINFO_NAME)) == 0);
isrsrcfork = isfinderinfo ? 0 : (bcmp(name, XATTR_RESOURCEFORK_NAME, sizeof(XATTR_RESOURCEFORK_NAME)) == 0);
if (!isrsrcfork)
uio_setoffset(uio, 0);
if (isfinderinfo) {
if (uio_resid(uio) != sizeof(finfo))
return (ERANGE);
error = uiomove((char*)&finfo, sizeof(finfo), uio);
if (error)
return (error);
empty = 1;
for (i=0, finfop=(uint32_t*)&finfo; i < (int)(sizeof(finfo)/sizeof(uint32_t)); i++)
if (finfop[i]) {
empty = 0;
break;
}
if (empty && !(options & (XATTR_CREATE|XATTR_REPLACE))) {
error = nfs4_named_attr_remove(VTONFS(ap->a_vp), anp, name, ctx);
if (error == ENOENT)
error = 0;
return (error);
}
}
flags = 0;
if (!(options & XATTR_REPLACE))
flags |= NFS_GET_NAMED_ATTR_CREATE;
if (options & XATTR_CREATE)
flags |= NFS_GET_NAMED_ATTR_CREATE_GUARDED;
if (!isrsrcfork)
flags |= NFS_GET_NAMED_ATTR_TRUNCATE;
error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_BOTH,
flags, ctx, &anp, &nofp);
if (!error && !anp)
error = ENOATTR;
if (error)
goto out;
if (nofp && !(error = nfs_open_file_set_busy(nofp, NULL))) {
nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
nofp->nof_creator = NULL;
nfs_open_file_clear_busy(nofp);
}
if (isfinderinfo && empty)
goto doclose;
vwa.a_desc = &vnop_write_desc;
vwa.a_vp = NFSTOV(anp);
vwa.a_uio = NULL;
vwa.a_ioflag = 0;
vwa.a_context = ctx;
if (isfinderinfo) {
auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_WRITE, &uio_buf, sizeof(uio_buf));
uio_addiov(auio, (uintptr_t)&finfo, sizeof(finfo));
vwa.a_uio = auio;
} else if (uio_resid(uio) > 0) {
vwa.a_uio = uio;
}
if (vwa.a_uio) {
error = nfs_vnop_write(&vwa);
if (!error)
error = nfs_flush(anp, MNT_WAIT, vfs_context_thread(ctx), 0);
}
doclose:
if (nofp) {
int busyerror = nfs_open_file_set_busy(nofp, NULL);
closeerror = nfs_close(anp, nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE, ctx);
if (!busyerror)
nfs_open_file_clear_busy(nofp);
}
if (!error && isfinderinfo && empty) {
error = nfs4_named_attr_remove(VTONFS(ap->a_vp), anp, name, ctx);
if (error == ENOENT)
error = 0;
}
if (!error)
error = closeerror;
out:
if (anp)
vnode_put(NFSTOV(anp));
if (error == ENOENT)
error = ENOATTR;
return (error);
}
int
nfs4_vnop_removexattr(
struct vnop_removexattr_args *ap)
{
struct nfsmount *nmp = VTONMP(ap->a_vp);
int error;
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
error = nfs4_named_attr_remove(VTONFS(ap->a_vp), NULL, ap->a_name, ap->a_context);
if (error == ENOENT)
error = ENOATTR;
return (error);
}
int
nfs4_vnop_listxattr(
struct vnop_listxattr_args *ap)
{
vfs_context_t ctx = ap->a_context;
nfsnode_t np = VTONFS(ap->a_vp);
uio_t uio = ap->a_uio;
nfsnode_t adnp = NULL;
struct nfsmount *nmp;
int error, done, i;
struct nfs_vattr nvattr;
uint64_t cookie, nextcookie, lbn = 0;
struct nfsbuf *bp = NULL;
struct nfs_dir_buf_header *ndbhp;
struct direntry *dp;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
error = nfs_getattr(np, &nvattr, ctx, NGA_CACHED);
if (error)
return (error);
if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
!(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
return (0);
if ((error = nfs_node_set_busy(np, vfs_context_thread(ctx))))
return (error);
adnp = nfs4_named_attr_dir_get(np, 1, ctx);
nfs_node_clear_busy(np);
if (!adnp)
goto out;
if ((error = nfs_node_lock(adnp)))
goto out;
if (adnp->n_flag & NNEEDINVALIDATE) {
adnp->n_flag &= ~NNEEDINVALIDATE;
nfs_invaldir(adnp);
nfs_node_unlock(adnp);
error = nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1);
if (!error)
error = nfs_node_lock(adnp);
if (error)
goto out;
}
if (adnp->n_flag & NMODIFIED) {
nfs_invaldir(adnp);
nfs_node_unlock(adnp);
if ((error = nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1)))
goto out;
} else {
nfs_node_unlock(adnp);
}
if ((error = nfs_getattr(adnp, &nvattr, ctx, NGA_UNCACHED)))
goto out;
if (uio && (uio_resid(uio) == 0))
goto out;
done = 0;
nextcookie = lbn = 0;
while (!error && !done) {
OSAddAtomic64(1, &nfsstats.biocache_readdirs);
cookie = nextcookie;
getbuffer:
error = nfs_buf_get(adnp, lbn, NFS_DIRBLKSIZ, vfs_context_thread(ctx), NBLK_READ, &bp);
if (error)
goto out;
ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
if (!ISSET(bp->nb_flags, NB_CACHE) || !ISSET(ndbhp->ndbh_flags, NDB_FULL)) {
if (!ISSET(bp->nb_flags, NB_CACHE)) {
ndbhp->ndbh_flags = 0;
ndbhp->ndbh_count = 0;
ndbhp->ndbh_entry_end = sizeof(*ndbhp);
ndbhp->ndbh_ncgen = adnp->n_ncgen;
}
error = nfs_buf_readdir(bp, ctx);
if (error == NFSERR_DIRBUFDROPPED)
goto getbuffer;
if (error)
nfs_buf_release(bp, 1);
if (error && (error != ENXIO) && (error != ETIMEDOUT) && (error != EINTR) && (error != ERESTART)) {
if (!nfs_node_lock(adnp)) {
nfs_invaldir(adnp);
nfs_node_unlock(adnp);
}
nfs_vinvalbuf(NFSTOV(adnp), 0, ctx, 1);
if (error == NFSERR_BAD_COOKIE)
error = ENOENT;
}
if (error)
goto out;
}
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
for (i=0; i < ndbhp->ndbh_count; i++) {
if (!xattr_protected(dp->d_name)) {
if (uio == NULL) {
*ap->a_size += dp->d_namlen + 1;
} else if (uio_resid(uio) < (dp->d_namlen + 1)) {
error = ERANGE;
} else {
error = uiomove(dp->d_name, dp->d_namlen+1, uio);
if (error && (error != EFAULT))
error = ERANGE;
}
}
nextcookie = dp->d_seekoff;
dp = NFS_DIRENTRY_NEXT(dp);
}
if (i == ndbhp->ndbh_count) {
lbn = nextcookie;
if (ISSET(ndbhp->ndbh_flags, NDB_EOF))
done = 1;
}
if (!error && !done && (nextcookie == cookie)) {
printf("nfs readdir cookie didn't change 0x%llx, %d/%d\n", cookie, i, ndbhp->ndbh_count);
error = EIO;
}
nfs_buf_release(bp, 1);
}
out:
if (adnp)
vnode_put(NFSTOV(adnp));
return (error);
}
#if NAMEDSTREAMS
int
nfs4_vnop_getnamedstream(
struct vnop_getnamedstream_args *ap)
{
vfs_context_t ctx = ap->a_context;
struct nfsmount *nmp;
struct nfs_vattr nvattr;
struct componentname cn;
nfsnode_t anp;
int error = 0;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
error = nfs_getattr(VTONFS(ap->a_vp), &nvattr, ctx, NGA_CACHED);
if (error)
return (error);
if (NFS_BITMAP_ISSET(nvattr.nva_bitmap, NFS_FATTR_NAMED_ATTR) &&
!(nvattr.nva_flags & NFS_FFLAG_HAS_NAMED_ATTRS))
return (ENOATTR);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
cn.cn_namelen = strlen(ap->a_name);
cn.cn_nameiop = LOOKUP;
cn.cn_flags = MAKEENTRY;
error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_NONE,
0, ctx, &anp, NULL);
if ((!error && !anp) || (error == ENOENT))
error = ENOATTR;
if (!error && anp)
*ap->a_svpp = NFSTOV(anp);
else if (anp)
vnode_put(NFSTOV(anp));
return (error);
}
int
nfs4_vnop_makenamedstream(
struct vnop_makenamedstream_args *ap)
{
vfs_context_t ctx = ap->a_context;
struct nfsmount *nmp;
struct componentname cn;
nfsnode_t anp;
int error = 0;
nmp = VTONMP(ap->a_vp);
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
bzero(&cn, sizeof(cn));
cn.cn_nameptr = __CAST_AWAY_QUALIFIER(ap->a_name, const, char *);
cn.cn_namelen = strlen(ap->a_name);
cn.cn_nameiop = CREATE;
cn.cn_flags = MAKEENTRY;
error = nfs4_named_attr_get(VTONFS(ap->a_vp), &cn, NFS_OPEN_SHARE_ACCESS_BOTH,
NFS_GET_NAMED_ATTR_CREATE, ctx, &anp, NULL);
if ((!error && !anp) || (error == ENOENT))
error = ENOATTR;
if (!error && anp)
*ap->a_svpp = NFSTOV(anp);
else if (anp)
vnode_put(NFSTOV(anp));
return (error);
}
int
nfs4_vnop_removenamedstream(
struct vnop_removenamedstream_args *ap)
{
struct nfsmount *nmp = VTONMP(ap->a_vp);
nfsnode_t np = ap->a_vp ? VTONFS(ap->a_vp) : NULL;
nfsnode_t anp = ap->a_svp ? VTONFS(ap->a_svp) : NULL;
if (nfs_mount_gone(nmp))
return (ENXIO);
if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR))
return (ENOTSUP);
return (nfs4_named_attr_remove(np, anp, ap->a_name, ap->a_context));
}
#endif