#include <sys/param.h>
#include <sys/proc.h>
#include <sys/kauth.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/mount_internal.h>
#include <sys/vnode_internal.h>
#include <sys/kpi_mbuf.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/malloc.h>
#include <sys/syscall.h>
#include <sys/sysctl.h>
#include <sys/ubc_internal.h>
#include <sys/fcntl.h>
#include <sys/uio_internal.h>
#include <sys/domain.h>
#include <libkern/OSAtomic.h>
#include <sys/vm.h>
#include <sys/vmparam.h>
#include <sys/time.h>
#include <kern/clock.h>
#include <nfs/rpcv2.h>
#include <nfs/nfsproto.h>
#include <nfs/nfs.h>
#include <nfs/nfsnode.h>
#include <nfs/xdr_subs.h>
#include <nfs/nfsm_subs.h>
#include <nfs/nfsmount.h>
#include <nfs/nfsrtt.h>
#include <nfs/nfs_lock.h>
#include <miscfs/specfs/specdev.h>
#include <netinet/in.h>
#if ISO
#include <netiso/iso.h>
#endif
#include <sys/kdebug.h>
SYSCTL_DECL(_vfs_generic);
SYSCTL_NODE(_vfs_generic, OID_AUTO, nfs, CTLFLAG_RW, 0, "nfs hinge");
#define FSDBG(A, B, C, D, E) \
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_NONE, \
(int)(B), (int)(C), (int)(D), (int)(E), 0)
#define FSDBG_TOP(A, B, C, D, E) \
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_START, \
(int)(B), (int)(C), (int)(D), (int)(E), 0)
#define FSDBG_BOT(A, B, C, D, E) \
KERNEL_DEBUG((FSDBG_CODE(DBG_FSRW, (A))) | DBG_FUNC_END, \
(int)(B), (int)(C), (int)(D), (int)(E), 0)
u_long nfs_xdrneg1;
u_long rpc_call, rpc_vers, rpc_reply, rpc_msgdenied, rpc_autherr,
rpc_mismatch, rpc_auth_unix, rpc_msgaccepted,
rpc_auth_kerb;
u_long nfs_prog, nfs_true, nfs_false;
__private_extern__ int nfs_mbuf_mlen = 0, nfs_mbuf_mhlen = 0,
nfs_mbuf_minclsize = 0, nfs_mbuf_mclbytes = 0;
static u_long nfs_xid = 0;
u_long nfs_xidwrap = 0;
static enum vtype nv2tov_type[8]= {
VNON, VREG, VDIR, VBLK, VCHR, VLNK, VNON, VNON
};
enum vtype nv3tov_type[8]= {
VNON, VREG, VDIR, VBLK, VCHR, VLNK, VSOCK, VFIFO
};
int nfs_mount_type;
int nfs_ticks;
lck_grp_t *nfsd_lck_grp;
lck_grp_attr_t *nfsd_lck_grp_attr;
lck_attr_t *nfsd_lck_attr;
lck_mtx_t *nfsd_mutex;
lck_grp_attr_t *nfs_slp_group_attr;
lck_attr_t *nfs_slp_lock_attr;
lck_grp_t *nfs_slp_rwlock_group;
lck_grp_t *nfs_slp_mutex_group;
struct nfs_reqq nfs_reqq;
struct nfssvc_sockhead nfssvc_sockhead, nfssvc_deadsockhead;
struct nfsd_head nfsd_head;
int nfsd_head_flag;
struct nfsexpfslist nfs_exports;
struct nfsexphashhead *nfsexphashtbl;
u_long nfsexphash;
lck_grp_attr_t *nfs_export_group_attr;
lck_attr_t *nfs_export_lock_attr;
lck_grp_t *nfs_export_rwlock_group;
lck_rw_t nfs_export_rwlock;
#ifndef NFS_NOSERVER
int nfsv3_procid[NFS_NPROCS] = {
NFSPROC_NULL,
NFSPROC_GETATTR,
NFSPROC_SETATTR,
NFSPROC_NOOP,
NFSPROC_LOOKUP,
NFSPROC_READLINK,
NFSPROC_READ,
NFSPROC_NOOP,
NFSPROC_WRITE,
NFSPROC_CREATE,
NFSPROC_REMOVE,
NFSPROC_RENAME,
NFSPROC_LINK,
NFSPROC_SYMLINK,
NFSPROC_MKDIR,
NFSPROC_RMDIR,
NFSPROC_READDIR,
NFSPROC_FSSTAT,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP,
NFSPROC_NOOP
};
#endif
int nfsv2_procid[NFS_NPROCS] = {
NFSV2PROC_NULL,
NFSV2PROC_GETATTR,
NFSV2PROC_SETATTR,
NFSV2PROC_LOOKUP,
NFSV2PROC_NOOP,
NFSV2PROC_READLINK,
NFSV2PROC_READ,
NFSV2PROC_WRITE,
NFSV2PROC_CREATE,
NFSV2PROC_MKDIR,
NFSV2PROC_SYMLINK,
NFSV2PROC_CREATE,
NFSV2PROC_REMOVE,
NFSV2PROC_RMDIR,
NFSV2PROC_RENAME,
NFSV2PROC_LINK,
NFSV2PROC_READDIR,
NFSV2PROC_NOOP,
NFSV2PROC_STATFS,
NFSV2PROC_NOOP,
NFSV2PROC_NOOP,
NFSV2PROC_NOOP,
NFSV2PROC_NOOP
};
#ifndef NFS_NOSERVER
static u_char nfsrv_v2errmap[ELAST] = {
NFSERR_PERM, NFSERR_NOENT, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_NXIO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_ACCES, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_EXIST, NFSERR_IO, NFSERR_NODEV, NFSERR_NOTDIR,
NFSERR_ISDIR, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_FBIG, NFSERR_NOSPC, NFSERR_IO, NFSERR_ROFS,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_NAMETOL, NFSERR_IO, NFSERR_IO,
NFSERR_NOTEMPTY, NFSERR_IO, NFSERR_IO, NFSERR_DQUOT, NFSERR_STALE,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
NFSERR_IO, NFSERR_IO, NFSERR_IO, NFSERR_IO,
};
static short nfsv3err_null[] = {
0,
0,
};
static short nfsv3err_getattr[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_setattr[] = {
NFSERR_IO,
NFSERR_PERM,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_INVAL,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOT_SYNC,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_lookup[] = {
NFSERR_IO,
NFSERR_NOENT,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_NOTDIR,
NFSERR_NAMETOL,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_access[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_readlink[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_INVAL,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_read[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_NXIO,
NFSERR_ACCES,
NFSERR_INVAL,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_write[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_INVAL,
NFSERR_FBIG,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_create[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_NOTDIR,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_mkdir[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_NOTDIR,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_symlink[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_NOTDIR,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_mknod[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_NOTDIR,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
NFSERR_BADTYPE,
0,
};
static short nfsv3err_remove[] = {
NFSERR_IO,
NFSERR_NOENT,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_NOTDIR,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_rmdir[] = {
NFSERR_IO,
NFSERR_NOENT,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_NOTDIR,
NFSERR_INVAL,
NFSERR_ROFS,
NFSERR_NAMETOL,
NFSERR_NOTEMPTY,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_rename[] = {
NFSERR_IO,
NFSERR_NOENT,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_XDEV,
NFSERR_NOTDIR,
NFSERR_ISDIR,
NFSERR_INVAL,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_MLINK,
NFSERR_NAMETOL,
NFSERR_NOTEMPTY,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_link[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_EXIST,
NFSERR_XDEV,
NFSERR_NOTDIR,
NFSERR_INVAL,
NFSERR_NOSPC,
NFSERR_ROFS,
NFSERR_MLINK,
NFSERR_NAMETOL,
NFSERR_DQUOT,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_NOTSUPP,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_readdir[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_NOTDIR,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_BAD_COOKIE,
NFSERR_TOOSMALL,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_readdirplus[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_ACCES,
NFSERR_NOTDIR,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_BAD_COOKIE,
NFSERR_NOTSUPP,
NFSERR_TOOSMALL,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_fsstat[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_fsinfo[] = {
NFSERR_STALE,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_pathconf[] = {
NFSERR_STALE,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short nfsv3err_commit[] = {
NFSERR_IO,
NFSERR_IO,
NFSERR_STALE,
NFSERR_BADHANDLE,
NFSERR_SERVERFAULT,
0,
};
static short *nfsrv_v3errmap[] = {
nfsv3err_null,
nfsv3err_getattr,
nfsv3err_setattr,
nfsv3err_lookup,
nfsv3err_access,
nfsv3err_readlink,
nfsv3err_read,
nfsv3err_write,
nfsv3err_create,
nfsv3err_mkdir,
nfsv3err_symlink,
nfsv3err_mknod,
nfsv3err_remove,
nfsv3err_rmdir,
nfsv3err_rename,
nfsv3err_link,
nfsv3err_readdir,
nfsv3err_readdirplus,
nfsv3err_fsstat,
nfsv3err_fsinfo,
nfsv3err_pathconf,
nfsv3err_commit,
};
#endif
extern struct nfsrtt nfsrtt;
extern struct nfsstats nfsstats;
extern nfstype nfsv2_type[9];
extern nfstype nfsv3_type[9];
extern struct nfsnodehashhead *nfsnodehashtbl;
extern u_long nfsnodehash;
LIST_HEAD(nfsnodehashhead, nfsnode);
int
nfsm_reqh(int hsiz, caddr_t *bposp, mbuf_t *mbp)
{
int error;
*mbp = NULL;
if (hsiz >= nfs_mbuf_minclsize)
error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, mbp);
else
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, mbp);
if (error)
return (error);
*bposp = mbuf_data(*mbp);
return (0);
}
int
nfsm_rpchead(cr, nmflag, procid, auth_type, auth_len, auth_str, verf_len,
verf_str, mrest, mrest_len, mbp, xidp, mreqp)
kauth_cred_t cr;
int nmflag;
int procid;
int auth_type;
int auth_len;
char *auth_str;
int verf_len;
char *verf_str;
mbuf_t mrest;
int mrest_len;
mbuf_t *mbp;
u_long *xidp;
mbuf_t *mreqp;
{
mbuf_t mb;
u_long *tl;
caddr_t bpos;
int i, error, len;
mbuf_t mreq, mb2;
int siz, grpsiz, authsiz, mlen;
struct timeval tv;
authsiz = nfsm_rndup(auth_len);
len = authsiz + 10 * NFSX_UNSIGNED;
if (len >= nfs_mbuf_minclsize) {
error = mbuf_getpacket(MBUF_WAITOK, &mb);
} else {
error = mbuf_gethdr(MBUF_WAITOK, MBUF_TYPE_DATA, &mb);
if (!error) {
if (len < nfs_mbuf_mhlen)
mbuf_align_32(mb, len);
else
mbuf_align_32(mb, 8 * NFSX_UNSIGNED);
}
}
if (error) {
return (error);
}
mreq = mb;
bpos = mbuf_data(mb);
nfsm_build(tl, u_long *, 8 * NFSX_UNSIGNED);
if (!nfs_xid) {
microtime(&tv);
nfs_xid = tv.tv_sec << 12;
}
if (++nfs_xid == 0) {
nfs_xidwrap++;
nfs_xid++;
}
*tl++ = *xidp = txdr_unsigned(nfs_xid);
*tl++ = rpc_call;
*tl++ = rpc_vers;
*tl++ = txdr_unsigned(NFS_PROG);
if (nmflag & NFSMNT_NFSV3)
*tl++ = txdr_unsigned(NFS_VER3);
else
*tl++ = txdr_unsigned(NFS_VER2);
if (nmflag & NFSMNT_NFSV3)
*tl++ = txdr_unsigned(procid);
else
*tl++ = txdr_unsigned(nfsv2_procid[procid]);
*tl++ = txdr_unsigned(auth_type);
*tl = txdr_unsigned(authsiz);
switch (auth_type) {
case RPCAUTH_UNIX:
nfsm_build(tl, u_long *, auth_len);
*tl++ = 0;
*tl++ = 0;
*tl++ = txdr_unsigned(kauth_cred_getuid(cr));
*tl++ = txdr_unsigned(cr->cr_groups[0]);
grpsiz = (auth_len >> 2) - 5;
*tl++ = txdr_unsigned(grpsiz);
for (i = 1; i <= grpsiz; i++)
*tl++ = txdr_unsigned(cr->cr_groups[i]);
break;
case RPCAUTH_KERB4:
siz = auth_len;
mlen = mbuf_len(mb);
while (siz > 0) {
if (mbuf_trailingspace(mb) == 0) {
mb2 = NULL;
if (siz >= nfs_mbuf_minclsize)
error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
else
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
if (!error)
error = mbuf_setnext(mb, mb2);
if (error) {
mbuf_freem(mreq);
return (error);
}
mb = mb2;
mlen = 0;
bpos = mbuf_data(mb);
}
i = min(siz, mbuf_trailingspace(mb));
bcopy(auth_str, bpos, i);
mlen += i;
mbuf_setlen(mb, mlen);
auth_str += i;
bpos += i;
siz -= i;
}
if ((siz = (nfsm_rndup(auth_len) - auth_len)) > 0) {
for (i = 0; i < siz; i++)
*bpos++ = '\0';
mlen += siz;
mbuf_setlen(mb, mlen);
}
break;
};
nfsm_build(tl, u_long *, 2 * NFSX_UNSIGNED);
if (verf_str) {
mlen = mbuf_len(mb);
*tl++ = txdr_unsigned(RPCAUTH_KERB4);
*tl = txdr_unsigned(verf_len);
siz = verf_len;
while (siz > 0) {
if (mbuf_trailingspace(mb) == 0) {
mb2 = NULL;
if (siz >= nfs_mbuf_minclsize)
error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
else
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mb2);
if (!error)
error = mbuf_setnext(mb, mb2);
if (error) {
mbuf_freem(mreq);
return (error);
}
mb = mb2;
mlen = 0;
bpos = mbuf_data(mb);
}
i = min(siz, mbuf_trailingspace(mb));
bcopy(verf_str, bpos, i);
mlen += i;
mbuf_setlen(mb, mlen);
verf_str += i;
bpos += i;
siz -= i;
}
if ((siz = (nfsm_rndup(verf_len) - verf_len)) > 0) {
for (i = 0; i < siz; i++)
*bpos++ = '\0';
mlen += siz;
mbuf_setlen(mb, mlen);
}
} else {
*tl++ = txdr_unsigned(RPCAUTH_NULL);
*tl = 0;
}
error = mbuf_pkthdr_setrcvif(mreq, 0);
if (!error)
error = mbuf_setnext(mb, mrest);
if (error) {
mbuf_freem(mreq);
return (error);
}
mbuf_pkthdr_setlen(mreq, authsiz + 10 * NFSX_UNSIGNED + mrest_len);
*mbp = mb;
*mreqp = mreq;
return (0);
}
int
nfsm_mbuftouio(mrep, uiop, siz, dpos)
mbuf_t *mrep;
struct uio *uiop;
int siz;
caddr_t *dpos;
{
char *mbufcp, *uiocp;
int xfer, left, len;
mbuf_t mp;
long uiosiz, rem;
int error = 0;
mp = *mrep;
mbufcp = *dpos;
len = (caddr_t)mbuf_data(mp) + mbuf_len(mp) - mbufcp;
rem = nfsm_rndup(siz)-siz;
while (siz > 0) {
if (uiop->uio_iovcnt <= 0 || uiop->uio_iovs.iov32p == NULL)
return (EFBIG);
left = uio_iov_len(uiop);
uiocp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
if (left > siz)
left = siz;
uiosiz = left;
while (left > 0) {
while (len == 0) {
mp = mbuf_next(mp);
if (mp == NULL)
return (EBADRPC);
mbufcp = mbuf_data(mp);
len = mbuf_len(mp);
}
xfer = (left > len) ? len : left;
if (UIO_SEG_IS_USER_SPACE(uiop->uio_segflg))
copyout(mbufcp, CAST_USER_ADDR_T(uiocp), xfer);
else
bcopy(mbufcp, uiocp, xfer);
left -= xfer;
len -= xfer;
mbufcp += xfer;
uiocp += xfer;
uiop->uio_offset += xfer;
uio_uio_resid_add(uiop, -xfer);
}
if (uio_iov_len(uiop) <= (size_t)siz) {
uiop->uio_iovcnt--;
uio_next_iov(uiop);
} else {
uio_iov_base_add(uiop, uiosiz);
uio_iov_len_add(uiop, -uiosiz);
}
siz -= uiosiz;
}
*dpos = mbufcp;
*mrep = mp;
if (rem > 0) {
if (len < rem)
error = nfs_adv(mrep, dpos, rem, len);
else
*dpos += rem;
}
return (error);
}
int
nfsm_uiotombuf(uiop, mq, siz, bpos)
struct uio *uiop;
mbuf_t *mq;
int siz;
caddr_t *bpos;
{
char *uiocp;
mbuf_t mp, mp2;
int xfer, left, mlen, mplen;
int uiosiz, clflg, rem, error;
char *cp;
if (uiop->uio_iovcnt != 1)
panic("nfsm_uiotombuf: iovcnt != 1");
if (siz > nfs_mbuf_mlen)
clflg = 1;
else
clflg = 0;
rem = nfsm_rndup(siz)-siz;
mp = mp2 = *mq;
mplen = mbuf_len(mp);
while (siz > 0) {
left = uio_iov_len(uiop);
uiocp = CAST_DOWN(caddr_t, uio_iov_base(uiop));
if (left > siz)
left = siz;
uiosiz = left;
while (left > 0) {
mlen = mbuf_trailingspace(mp);
if (mlen == 0) {
mp = NULL;
if (clflg)
error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
else
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
if (!error)
error = mbuf_setnext(mp2, mp);
if (error)
return (error);
mplen = 0;
mp2 = mp;
mlen = mbuf_trailingspace(mp);
}
xfer = (left > mlen) ? mlen : left;
if (UIO_SEG_IS_USER_SPACE(uiop->uio_segflg))
copyin(CAST_USER_ADDR_T(uiocp), (caddr_t)mbuf_data(mp) + mplen, xfer);
else
bcopy(uiocp, (caddr_t)mbuf_data(mp) + mplen, xfer);
mplen += xfer;
mbuf_setlen(mp, mplen);
left -= xfer;
uiocp += xfer;
uiop->uio_offset += xfer;
uio_uio_resid_add(uiop, -xfer);
}
uio_iov_base_add(uiop, uiosiz);
uio_iov_len_add(uiop, -uiosiz);
siz -= uiosiz;
}
if (rem > 0) {
if (rem > mbuf_trailingspace(mp)) {
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp);
if (!error)
error = mbuf_setnext(mp2, mp);
if (error)
return (error);
mplen = 0;
}
cp = (caddr_t)mbuf_data(mp) + mplen;
for (left = 0; left < rem; left++)
*cp++ = '\0';
mplen += rem;
mbuf_setlen(mp, mplen);
*bpos = cp;
} else {
*bpos = (caddr_t)mbuf_data(mp) + mplen;
}
*mq = mp;
return (0);
}
int
nfsm_disct(mdp, dposp, siz, left, cp2)
mbuf_t *mdp;
caddr_t *dposp;
int siz;
int left;
caddr_t *cp2;
{
mbuf_t mp, mp2;
int siz2, xfer, error, mp2len;
caddr_t p, mp2data;
mp = *mdp;
while (left == 0) {
*mdp = mp = mbuf_next(mp);
if (mp == NULL)
return (EBADRPC);
left = mbuf_len(mp);
*dposp = mbuf_data(mp);
}
if (left >= siz) {
*cp2 = *dposp;
*dposp += siz;
} else if (mbuf_next(mp) == NULL) {
return (EBADRPC);
} else if (siz > nfs_mbuf_mhlen) {
panic("nfs S too big");
} else {
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &mp2);
if (error)
return (error);
error = mbuf_setnext(mp2, mbuf_next(mp));
if (!error)
error = mbuf_setnext(mp, mp2);
if (error) {
mbuf_free(mp2);
return (error);
}
mbuf_setlen(mp, mbuf_len(mp) - left);
mp = mp2;
*cp2 = p = mbuf_data(mp);
bcopy(*dposp, p, left);
siz2 = siz-left;
p += left;
mp2 = mbuf_next(mp);
mp2data = mbuf_data(mp2);
mp2len = mbuf_len(mp2);
while (siz2 > 0) {
if (mp2 == NULL)
return (EBADRPC);
xfer = (siz2 > mp2len) ? mp2len : siz2;
if (xfer > 0) {
bcopy(mp2data, p, xfer);
mp2data += xfer;
mp2len -= xfer;
mbuf_setdata(mp2, mp2data, mp2len);
p += xfer;
siz2 -= xfer;
}
if (siz2 > 0) {
mp2 = mbuf_next(mp2);
mp2data = mbuf_data(mp2);
mp2len = mbuf_len(mp2);
}
}
mbuf_setlen(mp, siz);
*mdp = mp2;
*dposp = mp2data;
}
return (0);
}
int
nfs_adv(mdp, dposp, offs, left)
mbuf_t *mdp;
caddr_t *dposp;
int offs;
int left;
{
mbuf_t m;
int s;
m = *mdp;
s = left;
while (s < offs) {
offs -= s;
m = mbuf_next(m);
if (m == NULL)
return (EBADRPC);
s = mbuf_len(m);
}
*mdp = m;
*dposp = (caddr_t)mbuf_data(m) + offs;
return (0);
}
int
nfsm_strtmbuf(mb, bpos, cp, siz)
mbuf_t *mb;
char **bpos;
char *cp;
long siz;
{
mbuf_t m1 = NULL, m2;
long left, xfer, len, tlen, mlen;
u_long *tl;
int putsize, error;
putsize = 1;
m2 = *mb;
left = mbuf_trailingspace(m2);
if (left >= NFSX_UNSIGNED) {
tl = ((u_long *)(*bpos));
*tl++ = txdr_unsigned(siz);
putsize = 0;
left -= NFSX_UNSIGNED;
len = mbuf_len(m2);
len += NFSX_UNSIGNED;
mbuf_setlen(m2, len);
if (left > 0) {
bcopy(cp, (caddr_t) tl, left);
siz -= left;
cp += left;
len += left;
mbuf_setlen(m2, len);
left = 0;
}
}
while (siz > 0) {
m1 = NULL;
if (siz > nfs_mbuf_mlen)
error = mbuf_mclget(MBUF_WAITOK, MBUF_TYPE_DATA, &m1);
else
error = mbuf_get(MBUF_WAITOK, MBUF_TYPE_DATA, &m1);
if (!error)
error = mbuf_setnext(m2, m1);
if (error)
return (error);
mlen = mbuf_maxlen(m1);
mbuf_setlen(m1, mlen);
m2 = m1;
tl = mbuf_data(m1);
tlen = 0;
if (putsize) {
*tl++ = txdr_unsigned(siz);
mlen -= NFSX_UNSIGNED;
mbuf_setlen(m1, mlen);
tlen = NFSX_UNSIGNED;
putsize = 0;
}
if (siz < mlen) {
len = nfsm_rndup(siz);
xfer = siz;
if (xfer < len)
*(tl+(xfer>>2)) = 0;
} else {
xfer = len = mlen;
}
bcopy(cp, (caddr_t) tl, xfer);
mbuf_setlen(m1, len + tlen);
siz -= xfer;
cp += xfer;
}
*mb = m1;
*bpos = (caddr_t)mbuf_data(m1) + mbuf_len(m1);
return (0);
}
int
nfs_init(struct vfsconf *vfsp)
{
int i;
if (sizeof (struct nfsnode) > NFS_NODEALLOC) {
printf("struct nfsnode bloated (> %dbytes)\n", NFS_NODEALLOC);
printf("Try reducing NFS_SMALLFH\n");
}
if (sizeof (struct nfsmount) > NFS_MNTALLOC) {
printf("struct nfsmount bloated (> %dbytes)\n", NFS_MNTALLOC);
printf("Try reducing NFS_MUIDHASHSIZ\n");
}
if (sizeof (struct nfssvc_sock) > NFS_SVCALLOC) {
printf("struct nfssvc_sock bloated (> %dbytes)\n",NFS_SVCALLOC);
printf("Try reducing NFS_UIDHASHSIZ\n");
}
if (sizeof (struct nfsuid) > NFS_UIDALLOC) {
printf("struct nfsuid bloated (> %dbytes)\n",NFS_UIDALLOC);
printf("Try unionizing the nu_nickname and nu_flag fields\n");
}
nfs_mount_type = vfsp->vfc_typenum;
nfsrtt.pos = 0;
rpc_vers = txdr_unsigned(RPC_VER2);
rpc_call = txdr_unsigned(RPC_CALL);
rpc_reply = txdr_unsigned(RPC_REPLY);
rpc_msgdenied = txdr_unsigned(RPC_MSGDENIED);
rpc_msgaccepted = txdr_unsigned(RPC_MSGACCEPTED);
rpc_mismatch = txdr_unsigned(RPC_MISMATCH);
rpc_autherr = txdr_unsigned(RPC_AUTHERR);
rpc_auth_unix = txdr_unsigned(RPCAUTH_UNIX);
rpc_auth_kerb = txdr_unsigned(RPCAUTH_KERB4);
nfs_prog = txdr_unsigned(NFS_PROG);
nfs_true = txdr_unsigned(TRUE);
nfs_false = txdr_unsigned(FALSE);
nfs_xdrneg1 = txdr_unsigned(-1);
nfs_ticks = (hz * NFS_TICKINTVL + 500) / 1000;
if (nfs_ticks < 1)
nfs_ticks = 1;
for (i = 0; i < NFS_MAXASYNCDAEMON; i++) {
nfs_iodwant[i] = NULL;
nfs_iodmount[i] = (struct nfsmount *)0;
}
nfs_iod_lck_grp_attr = lck_grp_attr_alloc_init();
lck_grp_attr_setstat(nfs_iod_lck_grp_attr);
nfs_iod_lck_grp = lck_grp_alloc_init("nfs_iod", nfs_iod_lck_grp_attr);
nfs_iod_lck_attr = lck_attr_alloc_init();
nfs_iod_mutex = lck_mtx_alloc_init(nfs_iod_lck_grp, nfs_iod_lck_attr);
nfs_nbinit();
nfs_nhinit();
nfs_lockinit();
#ifndef NFS_NOSERVER
nfsd_lck_grp_attr = lck_grp_attr_alloc_init();
lck_grp_attr_setstat(nfsd_lck_grp_attr);
nfsd_lck_grp = lck_grp_alloc_init("nfsd", nfsd_lck_grp_attr);
nfsd_lck_attr = lck_attr_alloc_init();
nfsd_mutex = lck_mtx_alloc_init(nfsd_lck_grp, nfsd_lck_attr);
nfs_slp_lock_attr = lck_attr_alloc_init();
nfs_slp_group_attr = lck_grp_attr_alloc_init();
nfs_slp_rwlock_group = lck_grp_alloc_init("nfs-slp-rwlock", nfs_slp_group_attr);
nfs_slp_mutex_group = lck_grp_alloc_init("nfs-slp-mutex", nfs_slp_group_attr);
nfsexphashtbl = hashinit(8, M_TEMP, &nfsexphash);
LIST_INIT(&nfs_exports);
nfs_export_lock_attr = lck_attr_alloc_init();
nfs_export_group_attr = lck_grp_attr_alloc_init();
nfs_export_rwlock_group = lck_grp_alloc_init("nfs-export-rwlock", nfs_export_group_attr);
lck_rw_init(&nfs_export_rwlock, nfs_export_rwlock_group, nfs_export_lock_attr);
lck_mtx_lock(nfsd_mutex);
nfsrv_init(0);
nfsrv_initcache();
lck_mtx_unlock(nfsd_mutex);
#endif
TAILQ_INIT(&nfs_reqq);
nfs_timer(0);
vfsp->vfc_refcount++;
return (0);
}
void
nfs_mbuf_init(void)
{
struct mbuf_stat ms;
mbuf_stats(&ms);
nfs_mbuf_mlen = ms.mlen;
nfs_mbuf_mhlen = ms.mhlen;
nfs_mbuf_minclsize = ms.minclsize;
nfs_mbuf_mclbytes = ms.mclbytes;
}
int
nfs_parsefattr(mbuf_t *mdp, caddr_t *dposp, int v3, struct nfs_vattr *nvap)
{
struct nfs_fattr *fp;
long t1;
caddr_t cp2;
int error = 0, rdev;
mbuf_t md;
enum vtype vtype;
u_short vmode;
md = *mdp;
t1 = ((caddr_t)mbuf_data(md) + mbuf_len(md)) - *dposp;
if ((error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2))) {
return (error);
}
fp = (struct nfs_fattr *)cp2;
if (v3) {
vtype = nfsv3tov_type(fp->fa_type);
vmode = fxdr_unsigned(u_short, fp->fa_mode);
rdev = makedev(fxdr_unsigned(int, fp->fa3_rdev.specdata1),
fxdr_unsigned(int, fp->fa3_rdev.specdata2));
} else {
vtype = nfsv2tov_type(fp->fa_type);
vmode = fxdr_unsigned(u_short, fp->fa_mode);
if (vtype == VNON || (vtype == VREG && (vmode & S_IFMT) != 0))
vtype = IFTOVT(vmode);
rdev = fxdr_unsigned(long, fp->fa2_rdev);
if (vtype == VCHR && rdev == (int)0xffffffff)
vtype = VFIFO;
}
nvap->nva_type = vtype;
nvap->nva_mode = (vmode & 07777);
nvap->nva_rdev = (dev_t)rdev;
nvap->nva_nlink = (uint64_t)fxdr_unsigned(u_long, fp->fa_nlink);
nvap->nva_uid = fxdr_unsigned(uid_t, fp->fa_uid);
nvap->nva_gid = fxdr_unsigned(gid_t, fp->fa_gid);
if (v3) {
fxdr_hyper(&fp->fa3_size, &nvap->nva_size);
nvap->nva_blocksize = 16*1024;
fxdr_hyper(&fp->fa3_used, &nvap->nva_bytes);
fxdr_hyper(&fp->fa3_fileid, &nvap->nva_fileid);
fxdr_nfsv3time(&fp->fa3_atime, &nvap->nva_atime);
fxdr_nfsv3time(&fp->fa3_mtime, &nvap->nva_mtime);
fxdr_nfsv3time(&fp->fa3_ctime, &nvap->nva_ctime);
} else {
nvap->nva_size = fxdr_unsigned(u_long, fp->fa2_size);
nvap->nva_blocksize = fxdr_unsigned(long, fp->fa2_blocksize);
nvap->nva_bytes = fxdr_unsigned(long, fp->fa2_blocks) * NFS_FABLKSIZE;
nvap->nva_fileid = (uint64_t)fxdr_unsigned(u_long, fp->fa2_fileid);
fxdr_nfsv2time(&fp->fa2_atime, &nvap->nva_atime);
fxdr_nfsv2time(&fp->fa2_mtime, &nvap->nva_mtime);
fxdr_nfsv2time(&fp->fa2_ctime, &nvap->nva_ctime);
}
return (0);
}
int
nfs_loadattrcache(
struct nfsnode *np,
struct nfs_vattr *nvap,
u_int64_t *xidp,
int dontshrink)
{
mount_t mp;
vnode_t vp;
struct timeval now;
struct nfs_vattr *npnvap;
if (np->n_flag & NINIT) {
vp = NULL;
mp = np->n_mount;
} else {
vp = NFSTOV(np);
mp = vnode_mount(vp);
}
FSDBG_TOP(527, vp, np, *xidp >> 32, *xidp);
if (!VFSTONFS(mp)) {
FSDBG_BOT(527, ENXIO, 1, 0, *xidp);
return (ENXIO);
}
if (*xidp < np->n_xid) {
NATTRINVALIDATE(np);
FSDBG_BOT(527, 0, np, np->n_xid, *xidp);
*xidp = 0;
return (0);
}
if (vp && (nvap->nva_type != vnode_vtype(vp))) {
printf("nfs loadattrcache vnode changed type, was %d now %d\n",
vnode_vtype(vp), nvap->nva_type);
FSDBG_BOT(527, ESTALE, 3, 0, *xidp);
return (ESTALE);
}
microuptime(&now);
np->n_attrstamp = now.tv_sec;
np->n_xid = *xidp;
npnvap = &np->n_vattr;
nvap->nva_fsid = vfs_statfs(mp)->f_fsid.val[0];
bcopy((caddr_t)nvap, (caddr_t)npnvap, sizeof(*nvap));
if (vp) {
if (nvap->nva_size != np->n_size) {
FSDBG(527, vp, nvap->nva_size, np->n_size,
(nvap->nva_type == VREG) |
(np->n_flag & NMODIFIED ? 6 : 4));
if (nvap->nva_type == VREG) {
u_quad_t orig_size = np->n_size;
if (np->n_flag & NMODIFIED) {
if (nvap->nva_size < np->n_size)
nvap->nva_size = np->n_size;
else
np->n_size = nvap->nva_size;
} else
np->n_size = nvap->nva_size;
if (!UBCINFOEXISTS(vp) ||
(dontshrink && np->n_size < (u_quad_t)ubc_getsize(vp))) {
nvap->nva_size = np->n_size = orig_size;
NATTRINVALIDATE(np);
} else {
ubc_setsize(vp, (off_t)np->n_size);
}
} else
np->n_size = nvap->nva_size;
}
} else {
np->n_size = nvap->nva_size;
}
if (np->n_flag & NCHG) {
if (np->n_flag & NACC)
nvap->nva_atime = np->n_atim;
if (np->n_flag & NUPD)
nvap->nva_mtime = np->n_mtim;
}
FSDBG_BOT(527, 0, np, 0, *xidp);
return (0);
}
int
nfs_attrcachetimeout(vnode_t vp)
{
struct nfsnode *np = VTONFS(vp);
struct nfsmount *nmp;
struct timeval now;
int isdir, timeo;
if (!(nmp = VFSTONFS(vnode_mount(vp))))
return (0);
isdir = vnode_isdir(vp);
if ((np)->n_flag & NMODIFIED)
timeo = isdir ? nmp->nm_acdirmin : nmp->nm_acregmin;
else {
microtime(&now);
timeo = (now.tv_sec - (np)->n_mtime.tv_sec) / 10;
if (isdir) {
if (timeo < nmp->nm_acdirmin)
timeo = nmp->nm_acdirmin;
else if (timeo > nmp->nm_acdirmax)
timeo = nmp->nm_acdirmax;
} else {
if (timeo < nmp->nm_acregmin)
timeo = nmp->nm_acregmin;
else if (timeo > nmp->nm_acregmax)
timeo = nmp->nm_acregmax;
}
}
return (timeo);
}
int
nfs_getattrcache(vp, nvaper)
vnode_t vp;
struct nfs_vattr *nvaper;
{
struct nfsnode *np = VTONFS(vp);
struct nfs_vattr *nvap;
struct timeval nowup;
int32_t timeo;
if (!NATTRVALID(np)) {
FSDBG(528, vp, 0, 0, 0);
OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_misses);
return (ENOENT);
}
timeo = nfs_attrcachetimeout(vp);
microuptime(&nowup);
if ((nowup.tv_sec - np->n_attrstamp) >= timeo) {
FSDBG(528, vp, 0, 0, 1);
OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_misses);
return (ENOENT);
}
FSDBG(528, vp, 0, 0, 2);
OSAddAtomic(1, (SInt32*)&nfsstats.attrcache_hits);
nvap = &np->n_vattr;
if (nvap->nva_size != np->n_size) {
FSDBG(528, vp, nvap->nva_size, np->n_size,
(nvap->nva_type == VREG) |
(np->n_flag & NMODIFIED ? 6 : 4));
if (nvap->nva_type == VREG) {
if (np->n_flag & NMODIFIED) {
if (nvap->nva_size < np->n_size)
nvap->nva_size = np->n_size;
else
np->n_size = nvap->nva_size;
} else
np->n_size = nvap->nva_size;
ubc_setsize(vp, (off_t)np->n_size);
} else
np->n_size = nvap->nva_size;
}
bcopy((caddr_t)nvap, (caddr_t)nvaper, sizeof(struct nfs_vattr));
if (np->n_flag & NCHG) {
if (np->n_flag & NACC)
nvaper->nva_atime = np->n_atim;
if (np->n_flag & NUPD)
nvaper->nva_mtime = np->n_mtim;
}
return (0);
}
#ifndef NFS_NOSERVER
int
nfsm_path_mbuftond(
mbuf_t *mdp,
caddr_t *dposp,
__unused int v3,
__unused int pubflag,
int* lenp,
struct nameidata *ndp)
{
int i, len, len2, rem, error = 0;
mbuf_t md;
char *fromcp, *tocp;
struct componentname *cnp = &ndp->ni_cnd;
#ifdef WEBNFS_ENABLED
int webcnt = 0, digitcnt = 0;
char hexdigits[2];
#endif
len = *lenp;
if (len > (MAXPATHLEN - 1))
return (ENAMETOOLONG);
MALLOC_ZONE(cnp->cn_pnbuf, caddr_t, MAXPATHLEN, M_NAMEI, M_WAITOK);
if (!cnp->cn_pnbuf)
return (ENOMEM);
cnp->cn_pnlen = MAXPATHLEN;
cnp->cn_flags |= HASBUF;
fromcp = *dposp;
tocp = cnp->cn_pnbuf;
md = *mdp;
rem = (caddr_t)mbuf_data(md) + mbuf_len(md) - fromcp;
for (i = 1; i <= len; i++) {
while (rem == 0) {
md = mbuf_next(md);
if (md == NULL) {
error = EBADRPC;
goto out;
}
fromcp = mbuf_data(md);
rem = mbuf_len(md);
}
#ifdef WEBNFS_ENABLED
if (pubflag) {
if ((i == 1) && ((unsigned char)*fromcp >= WEBNFS_SPECCHAR_START)) {
switch ((unsigned char)*fromcp) {
case WEBNFS_NATIVE_CHAR:
webcnt++;
fromcp++;
rem--;
continue;
default:
error = EIO;
goto out;
}
}
if (digitcnt) {
if (!ISHEX(*fromcp)) {
error = ENOENT;
goto out;
}
digitcnt--;
hexdigits[digitcnt ? 0 : 1] = *fromcp++;
if (!digitcnt)
*tocp++ = HEXSTRTOI(hexdigits);
rem--;
continue;
} else if (*fromcp == WEBNFS_ESC_CHAR) {
digitcnt = 2;
webcnt += 2;
fromcp++;
rem--;
continue;
}
}
if (*fromcp == '\0' || (!pubflag && *fromcp == '/'))
#else
if (*fromcp == '\0' || *fromcp == '/')
#endif
{
error = EACCES;
goto out;
}
*tocp++ = *fromcp++;
rem--;
}
*tocp = '\0';
*mdp = md;
*dposp = fromcp;
len2 = nfsm_rndup(len)-len;
if (len2 > 0) {
if (rem >= len2)
*dposp += len2;
else if ((error = nfs_adv(mdp, dposp, len2, rem)) != 0)
goto out;
}
#ifdef WEBNFS_ENABLED
if (pubflag) {
if (digitcnt) {
error = ENOENT;
goto out;
}
len -= webcnt;
}
#endif
out:
if (error) {
if (cnp->cn_pnbuf)
FREE_ZONE(cnp->cn_pnbuf, MAXPATHLEN, M_NAMEI);
cnp->cn_flags &= ~HASBUF;
} else {
ndp->ni_pathlen = len;
*lenp = len;
}
return (error);
}
int
nfs_namei(
struct nfsrv_descript *nfsd,
struct vfs_context *ctx,
struct nameidata *ndp,
struct nfs_filehandle *nfhp,
mbuf_t nam,
int pubflag,
vnode_t *retdirp,
struct nfs_export **nxp,
struct nfs_export_options **nxop)
{
#ifdef WEBNFS_ENABLED
char *cp;
uio_t auio;
char uio_buf[ UIO_SIZEOF(1) ];
int linklen, olen = ndp->ni_pathlen;
#endif
vnode_t dp;
int error;
struct componentname *cnp = &ndp->ni_cnd;
char *tmppn;
*retdirp = NULL;
error = nfsrv_fhtovp(nfhp, nam, pubflag, &dp, nxp, nxop);
if (error)
goto out;
error = nfsrv_credcheck(nfsd, *nxp, *nxop);
if (error || (vnode_vtype(dp) != VDIR)) {
vnode_put(dp);
error = ENOTDIR;
goto out;
}
ctx->vc_ucred = nfsd->nd_cr;
ndp->ni_cnd.cn_context = ctx;
if (*nxop && ((*nxop)->nxo_flags & NX_READONLY))
cnp->cn_flags |= RDONLY;
*retdirp = dp;
#ifdef WEBNFS_ENABLED
if (pubflag) {
ndp->ni_rootdir = rootvnode;
ndp->ni_loopcnt = 0;
if (cnp->cn_pnbuf[0] == '/') {
vnode_put(dp);
dp = rootvnode;
error = vnode_get(dp);
if (error) {
*retdirp = NULL;
goto out;
}
}
} else {
cnp->cn_flags |= NOCROSSMOUNT;
}
#else
cnp->cn_flags |= NOCROSSMOUNT;
#endif
ndp->ni_usedvp = dp;
for (;;) {
cnp->cn_nameptr = cnp->cn_pnbuf;
ndp->ni_startdir = dp;
error = lookup(ndp);
if (error)
break;
if ((cnp->cn_flags & ISSYMLINK) == 0) {
return (0);
} else {
if ((cnp->cn_flags & FSNODELOCKHELD)) {
cnp->cn_flags &= ~FSNODELOCKHELD;
unlock_fsnode(ndp->ni_dvp, NULL);
}
#ifdef WEBNFS_ENABLED
if (!pubflag) {
#endif
if (cnp->cn_flags & (LOCKPARENT | WANTPARENT))
vnode_put(ndp->ni_dvp);
if (ndp->ni_vp) {
vnode_put(ndp->ni_vp);
ndp->ni_vp = NULL;
}
error = EINVAL;
break;
#ifdef WEBNFS_ENABLED
}
if (ndp->ni_loopcnt++ >= MAXSYMLINKS) {
vnode_put(ndp->ni_vp);
ndp->ni_vp = NULL;
error = ELOOP;
break;
}
if (ndp->ni_pathlen > 1) {
MALLOC_ZONE(cp, char *, MAXPATHLEN, M_NAMEI, M_WAITOK);
if (!cp) {
vnode_put(ndp->ni_vp);
ndp->ni_vp = NULL;
error = ENOMEM;
break;
}
} else {
cp = cnp->cn_pnbuf;
}
auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
&uio_buf[0], sizeof(uio_buf));
if (!auio) {
vnode_put(ndp->ni_vp);
ndp->ni_vp = NULL;
if (ndp->ni_pathlen > 1)
FREE_ZONE(cp, MAXPATHLEN, M_NAMEI);
error = ENOMEM;
break;
}
uio_addiov(auio, CAST_USER_ADDR_T(cp), MAXPATHLEN);
error = VNOP_READLINK(ndp->ni_vp, auio, cnp->cn_context);
if (error) {
badlink:
vnode_put(ndp->ni_vp);
ndp->ni_vp = NULL;
if (ndp->ni_pathlen > 1)
FREE_ZONE(cp, MAXPATHLEN, M_NAMEI);
break;
}
linklen = MAXPATHLEN - uio_resid(auio);
if (linklen == 0) {
error = ENOENT;
goto badlink;
}
if (linklen + ndp->ni_pathlen >= MAXPATHLEN) {
error = ENAMETOOLONG;
goto badlink;
}
if (ndp->ni_pathlen > 1) {
long len = cnp->cn_pnlen;
tmppn = cnp->cn_pnbuf;
cnp->cn_pnbuf = cp;
cnp->cn_pnlen = olen + 1;
bcopy(ndp->ni_next, cp + linklen, ndp->ni_pathlen);
FREE_ZONE(tmppn, len, M_NAMEI);
} else
cnp->cn_pnbuf[linklen] = '\0';
ndp->ni_pathlen += linklen;
vnode_put(ndp->ni_vp);
dp = ndp->ni_dvp;
ndp->ni_dvp = NULL;
if (cnp->cn_pnbuf[0] == '/') {
vnode_put(dp);
dp = ndp->ni_rootdir;
error = vnode_get(dp);
if (error)
break;
}
#endif
}
}
out:
tmppn = cnp->cn_pnbuf;
cnp->cn_pnbuf = NULL;
cnp->cn_flags &= ~HASBUF;
FREE_ZONE(tmppn, cnp->cn_pnlen, M_NAMEI);
return (error);
}
void
nfsm_adj(mp, len, nul)
mbuf_t mp;
int len;
int nul;
{
mbuf_t m, mnext;
int count, i, mlen;
char *cp;
count = 0;
m = mp;
for (;;) {
mlen = mbuf_len(m);
count += mlen;
mnext = mbuf_next(m);
if (mnext == NULL)
break;
m = mnext;
}
if (mlen > len) {
mlen -= len;
mbuf_setlen(m, mlen);
if (nul > 0) {
cp = (caddr_t)mbuf_data(m) + mlen - nul;
for (i = 0; i < nul; i++)
*cp++ = '\0';
}
return;
}
count -= len;
if (count < 0)
count = 0;
for (m = mp; m; m = mbuf_next(m)) {
mlen = mbuf_len(m);
if (mlen >= count) {
mlen = count;
mbuf_setlen(m, count);
if (nul > 0) {
cp = (caddr_t)mbuf_data(m) + mlen - nul;
for (i = 0; i < nul; i++)
*cp++ = '\0';
}
break;
}
count -= mlen;
}
for (m = mbuf_next(m); m; m = mbuf_next(m))
mbuf_setlen(m, 0);
}
void
nfsm_srvwcc(nfsd, before_ret, before_vap, after_ret, after_vap, mbp, bposp)
struct nfsrv_descript *nfsd;
int before_ret;
struct vnode_attr *before_vap;
int after_ret;
struct vnode_attr *after_vap;
mbuf_t *mbp;
char **bposp;
{
mbuf_t mb = *mbp, mb2;
char *bpos = *bposp;
u_long *tl;
if (before_ret) {
nfsm_build(tl, u_long *, NFSX_UNSIGNED);
*tl = nfs_false;
} else {
nfsm_build(tl, u_long *, 7 * NFSX_UNSIGNED);
*tl++ = nfs_true;
txdr_hyper(&(before_vap->va_data_size), tl);
tl += 2;
txdr_nfsv3time(&(before_vap->va_modify_time), tl);
tl += 2;
txdr_nfsv3time(&(before_vap->va_change_time), tl);
}
*bposp = bpos;
*mbp = mb;
nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp);
}
void
nfsm_srvpostopattr(nfsd, after_ret, after_vap, mbp, bposp)
struct nfsrv_descript *nfsd;
int after_ret;
struct vnode_attr *after_vap;
mbuf_t *mbp;
char **bposp;
{
mbuf_t mb = *mbp, mb2;
char *bpos = *bposp;
u_long *tl;
struct nfs_fattr *fp;
if (after_ret) {
nfsm_build(tl, u_long *, NFSX_UNSIGNED);
*tl = nfs_false;
} else {
nfsm_build(tl, u_long *, NFSX_UNSIGNED + NFSX_V3FATTR);
*tl++ = nfs_true;
fp = (struct nfs_fattr *)tl;
nfsm_srvfattr(nfsd, after_vap, fp);
}
*mbp = mb;
*bposp = bpos;
}
void
nfsm_srvfattr(nfsd, vap, fp)
struct nfsrv_descript *nfsd;
struct vnode_attr *vap;
struct nfs_fattr *fp;
{
fp->fa_nlink = txdr_unsigned(vap->va_nlink);
fp->fa_uid = txdr_unsigned(vap->va_uid);
fp->fa_gid = txdr_unsigned(vap->va_gid);
if (nfsd->nd_flag & ND_NFSV3) {
fp->fa_type = vtonfsv3_type(vap->va_type);
fp->fa_mode = vtonfsv3_mode(vap->va_mode);
txdr_hyper(&vap->va_data_size, &fp->fa3_size);
txdr_hyper(&vap->va_data_alloc, &fp->fa3_used);
fp->fa3_rdev.specdata1 = txdr_unsigned(major(vap->va_rdev));
fp->fa3_rdev.specdata2 = txdr_unsigned(minor(vap->va_rdev));
fp->fa3_fsid.nfsuquad[0] = 0;
fp->fa3_fsid.nfsuquad[1] = txdr_unsigned(vap->va_fsid);
txdr_hyper(&vap->va_fileid, &fp->fa3_fileid);
txdr_nfsv3time(&vap->va_access_time, &fp->fa3_atime);
txdr_nfsv3time(&vap->va_modify_time, &fp->fa3_mtime);
txdr_nfsv3time(&vap->va_change_time, &fp->fa3_ctime);
} else {
fp->fa_type = vtonfsv2_type(vap->va_type);
fp->fa_mode = vtonfsv2_mode(vap->va_type, vap->va_mode);
fp->fa2_size = txdr_unsigned(vap->va_data_size);
fp->fa2_blocksize = txdr_unsigned(vap->va_iosize);
if (vap->va_type == VFIFO)
fp->fa2_rdev = 0xffffffff;
else
fp->fa2_rdev = txdr_unsigned(vap->va_rdev);
fp->fa2_blocks = txdr_unsigned(vap->va_data_alloc / NFS_FABLKSIZE);
fp->fa2_fsid = txdr_unsigned(vap->va_fsid);
fp->fa2_fileid = txdr_unsigned(vap->va_fileid);
txdr_nfsv2time(&vap->va_access_time, &fp->fa2_atime);
txdr_nfsv2time(&vap->va_modify_time, &fp->fa2_mtime);
txdr_nfsv2time(&vap->va_change_time, &fp->fa2_ctime);
}
}
static int
nfsrv_hang_addrlist(struct nfs_export *nx, struct user_nfs_export_args *unxa)
{
struct nfs_export_net_args nxna;
struct nfs_netopt *no;
struct radix_node_head *rnh;
struct radix_node *rn;
struct sockaddr *saddr, *smask;
struct domain *dom;
int i, error;
unsigned int net;
user_addr_t uaddr;
kauth_cred_t cred;
struct ucred temp_cred;
uaddr = unxa->nxa_nets;
for (net = 0; net < unxa->nxa_netcount; net++, uaddr += sizeof(nxna)) {
error = copyin(uaddr, &nxna, sizeof(nxna));
if (error)
return (error);
if (nxna.nxna_flags & (NX_MAPROOT|NX_MAPALL)) {
bzero(&temp_cred, sizeof(temp_cred));
temp_cred.cr_uid = nxna.nxna_cred.cr_uid;
temp_cred.cr_ngroups = nxna.nxna_cred.cr_ngroups;
for (i=0; i < nxna.nxna_cred.cr_ngroups && i < NGROUPS; i++)
temp_cred.cr_groups[i] = nxna.nxna_cred.cr_groups[i];
cred = kauth_cred_create(&temp_cred);
if (!cred)
return (ENOMEM);
} else {
cred = NULL;
}
if (nxna.nxna_addr.ss_len == 0) {
if (nx->nx_flags & NX_DEFAULTEXPORT)
return (EEXIST);
nx->nx_flags |= NX_DEFAULTEXPORT;
nx->nx_defopt.nxo_flags = nxna.nxna_flags;
nx->nx_defopt.nxo_cred = cred;
nx->nx_expcnt++;
continue;
}
i = sizeof(struct nfs_netopt);
i += nxna.nxna_addr.ss_len + nxna.nxna_mask.ss_len;
MALLOC(no, struct nfs_netopt *, i, M_NETADDR, M_WAITOK);
if (!no)
return (ENOMEM);
bzero(no, sizeof(struct nfs_netopt));
no->no_opt.nxo_flags = nxna.nxna_flags;
no->no_opt.nxo_cred = cred;
saddr = (struct sockaddr *)(no + 1);
bcopy(&nxna.nxna_addr, saddr, nxna.nxna_addr.ss_len);
if (nxna.nxna_mask.ss_len) {
smask = (struct sockaddr *)((caddr_t)saddr + nxna.nxna_addr.ss_len);
bcopy(&nxna.nxna_mask, smask, nxna.nxna_mask.ss_len);
} else {
smask = NULL;
}
i = saddr->sa_family;
if ((rnh = nx->nx_rtable[i]) == 0) {
for (dom = domains; dom; dom = dom->dom_next)
if (dom->dom_family == i && dom->dom_rtattach) {
dom->dom_rtattach((void **)&nx->nx_rtable[i],
dom->dom_rtoffset);
break;
}
if ((rnh = nx->nx_rtable[i]) == 0) {
kauth_cred_rele(cred);
_FREE(no, M_NETADDR);
return (ENOBUFS);
}
}
rn = (*rnh->rnh_addaddr)((caddr_t)saddr, (caddr_t)smask, rnh, no->no_rnodes);
if (rn == 0) {
int matched = 0;
rn = (*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
if (rn != 0 && (rn->rn_flags & RNF_ROOT) == 0 &&
(((struct nfs_netopt *)rn)->no_opt.nxo_flags == nxna.nxna_flags)) {
kauth_cred_t cred2 = ((struct nfs_netopt *)rn)->no_opt.nxo_cred;
if (cred && cred2 && (cred->cr_uid == cred2->cr_uid) &&
(cred->cr_ngroups == cred2->cr_ngroups)) {
for (i=0; i < cred2->cr_ngroups && i < NGROUPS; i++)
if (cred->cr_groups[i] != cred2->cr_groups[i])
break;
if (i >= cred2->cr_ngroups || i >= NGROUPS)
matched = 1;
}
}
kauth_cred_rele(cred);
_FREE(no, M_NETADDR);
if (matched)
continue;
return (EPERM);
}
nx->nx_expcnt++;
}
return (0);
}
struct nfsrv_free_netopt_arg {
uint32_t *cnt;
struct radix_node_head *rnh;
};
static int
nfsrv_free_netopt(struct radix_node *rn, void *w)
{
struct nfsrv_free_netopt_arg *fna = (struct nfsrv_free_netopt_arg *)w;
struct radix_node_head *rnh = fna->rnh;
uint32_t *cnt = fna->cnt;
struct nfs_netopt *nno = (struct nfs_netopt *)rn;
(*rnh->rnh_deladdr)(rn->rn_key, rn->rn_mask, rnh);
if (nno->no_opt.nxo_cred)
kauth_cred_rele(nno->no_opt.nxo_cred);
_FREE((caddr_t)rn, M_NETADDR);
*cnt -= 1;
return (0);
}
static void
nfsrv_free_addrlist(struct nfs_export *nx)
{
int i;
struct radix_node_head *rnh;
struct nfsrv_free_netopt_arg fna;
for (i = 0; i <= AF_MAX; i++)
if ( (rnh = nx->nx_rtable[i]) ) {
fna.rnh = rnh;
fna.cnt = &nx->nx_expcnt;
(*rnh->rnh_walktree)(rnh, nfsrv_free_netopt, (caddr_t)&fna);
_FREE((caddr_t)rnh, M_RTABLE);
nx->nx_rtable[i] = 0;
}
}
void enablequotas(struct mount *mp, vfs_context_t ctx);
int
nfsrv_export(struct user_nfs_export_args *unxa, struct vfs_context *ctx)
{
int error = 0, pathlen;
struct nfs_exportfs *nxfs, *nxfs2, *nxfs3;
struct nfs_export *nx, *nx2, *nx3;
struct nfs_filehandle nfh;
struct nameidata mnd, xnd;
vnode_t mvp = NULL, xvp = NULL;
mount_t mp;
char path[MAXPATHLEN];
int expisroot;
if (unxa->nxa_flags & NXA_DELETE_ALL) {
lck_rw_lock_exclusive(&nfs_export_rwlock);
while ((nxfs = LIST_FIRST(&nfs_exports))) {
mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
if (mp)
mp->mnt_flag &= ~MNT_EXPORTED;
while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
LIST_REMOVE(nx, nx_next);
LIST_REMOVE(nx, nx_hash);
nfsrv_free_addrlist(nx);
nx->nx_flags &= ~NX_DEFAULTEXPORT;
if (nx->nx_defopt.nxo_cred) {
kauth_cred_rele(nx->nx_defopt.nxo_cred);
nx->nx_defopt.nxo_cred = NULL;
}
FREE(nx->nx_path, M_TEMP);
FREE(nx, M_TEMP);
}
LIST_REMOVE(nxfs, nxfs_next);
FREE(nxfs->nxfs_path, M_TEMP);
FREE(nxfs, M_TEMP);
}
lck_rw_done(&nfs_export_rwlock);
return (0);
}
error = copyinstr(unxa->nxa_fspath, path, MAXPATHLEN, (size_t *)&pathlen);
if (error)
return (error);
lck_rw_lock_exclusive(&nfs_export_rwlock);
LIST_FOREACH(nxfs, &nfs_exports, nxfs_next) {
if (nxfs->nxfs_id == unxa->nxa_fsid)
break;
}
if (nxfs) {
if (strcmp(path, nxfs->nxfs_path)) {
error = EEXIST;
goto unlock_out;
}
mp = vfs_getvfs_by_mntonname(nxfs->nxfs_path);
NDINIT(&mnd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
UIO_SYSSPACE, nxfs->nxfs_path, ctx);
error = namei(&mnd);
if (error)
goto unlock_out;
mvp = mnd.ni_vp;
if ((mvp->v_flag & VROOT) == 0) {
error = EINVAL;
goto out;
}
if (mp != vnode_mount(mvp)) {
error = EINVAL;
goto out;
}
} else {
if (!(unxa->nxa_flags & NXA_ADD)) {
error = ENOENT;
goto unlock_out;
}
NDINIT(&mnd, LOOKUP, FOLLOW | LOCKLEAF | AUDITVNPATH1,
UIO_SYSSPACE, path, ctx);
error = namei(&mnd);
if (error)
goto unlock_out;
mvp = mnd.ni_vp;
if ((mvp->v_flag & VROOT) == 0) {
error = EINVAL;
goto out;
}
mp = vnode_mount(mvp);
nfh.nfh_len = NFS_MAX_FID_SIZE;
error = VFS_VPTOFH(mvp, &nfh.nfh_len, &nfh.nfh_fid[0], NULL);
if (!error && (nfh.nfh_len > (int)NFS_MAX_FID_SIZE))
error = EIO;
if (error)
goto out;
MALLOC(nxfs, struct nfs_exportfs *, sizeof(struct nfs_exportfs), M_TEMP, M_WAITOK);
if (!nxfs) {
error = ENOMEM;
goto out;
}
bzero(nxfs, sizeof(struct nfs_exportfs));
nxfs->nxfs_id = unxa->nxa_fsid;
MALLOC(nxfs->nxfs_path, char*, pathlen, M_TEMP, M_WAITOK);
if (!nxfs->nxfs_path) {
FREE(nxfs, M_TEMP);
error = ENOMEM;
goto out;
}
bcopy(path, nxfs->nxfs_path, pathlen);
nxfs3 = NULL;
LIST_FOREACH(nxfs2, &nfs_exports, nxfs_next) {
if (strcmp(nxfs->nxfs_path, nxfs2->nxfs_path) > 0)
break;
nxfs3 = nxfs2;
}
if (nxfs2)
LIST_INSERT_BEFORE(nxfs2, nxfs, nxfs_next);
else if (nxfs3)
LIST_INSERT_AFTER(nxfs3, nxfs, nxfs_next);
else
LIST_INSERT_HEAD(&nfs_exports, nxfs, nxfs_next);
enablequotas(mp, ctx);
}
if (unxa->nxa_exppath) {
error = copyinstr(unxa->nxa_exppath, path, MAXPATHLEN, (size_t *)&pathlen);
if (error)
goto out;
LIST_FOREACH(nx, &nxfs->nxfs_exports, nx_next) {
if (nx->nx_id == unxa->nxa_expid)
break;
}
if (nx) {
if (strcmp(path, nx->nx_path)) {
error = EEXIST;
goto out;
}
} else {
if (!(unxa->nxa_flags & NXA_ADD)) {
error = ENOENT;
goto out;
}
MALLOC(nx, struct nfs_export *, sizeof(struct nfs_export), M_TEMP, M_WAITOK);
if (!nx) {
error = ENOMEM;
goto out1;
}
bzero(nx, sizeof(struct nfs_export));
nx->nx_id = unxa->nxa_expid;
nx->nx_fs = nxfs;
MALLOC(nx->nx_path, char*, pathlen, M_TEMP, M_WAITOK);
if (!nx->nx_path) {
error = ENOMEM;
FREE(nx, M_TEMP);
nx = NULL;
goto out1;
}
bcopy(path, nx->nx_path, pathlen);
nx3 = NULL;
LIST_FOREACH(nx2, &nxfs->nxfs_exports, nx_next) {
if (strcmp(nx->nx_path, nx2->nx_path) > 0)
break;
nx3 = nx2;
}
if (nx2)
LIST_INSERT_BEFORE(nx2, nx, nx_next);
else if (nx3)
LIST_INSERT_AFTER(nx3, nx, nx_next);
else
LIST_INSERT_HEAD(&nxfs->nxfs_exports, nx, nx_next);
LIST_INSERT_HEAD(NFSEXPHASH(nxfs->nxfs_id, nx->nx_id), nx, nx_hash);
error = 0;
if ((nx3 && !strncmp(nx3->nx_path, nx->nx_path, pathlen - 1) &&
(nx3->nx_path[pathlen-1] == '/')) ||
(nx2 && !strncmp(nx2->nx_path, nx->nx_path, strlen(nx2->nx_path)) &&
(nx->nx_path[strlen(nx2->nx_path)] == '/')))
error = EINVAL;
if (!error) {
expisroot = !nx->nx_path[0] ||
((nx->nx_path[0] == '.') && !nx->nx_path[1]);
LIST_FOREACH(nx2, &nxfs->nxfs_exports, nx_next) {
if (expisroot) {
if (nx2 != nx)
break;
} else if (!nx2->nx_path[0])
break;
else if ((nx2->nx_path[0] == '.') && !nx2->nx_path[1])
break;
}
if (nx2)
error = EINVAL;
}
if (error) {
printf("nfsrv_export: attempt to register nested exports: %s/%s\n",
nxfs->nxfs_path, nx->nx_path);
goto out1;
}
if (!nx->nx_path[0] || ((nx->nx_path[0] == '.') && !nx->nx_path[1])) {
xvp = mvp;
vnode_get(xvp);
} else {
xnd.ni_cnd.cn_nameiop = LOOKUP;
xnd.ni_cnd.cn_flags = LOCKLEAF;
xnd.ni_pathlen = pathlen - 1;
xnd.ni_cnd.cn_nameptr = xnd.ni_cnd.cn_pnbuf = path;
xnd.ni_startdir = mvp;
xnd.ni_usedvp = mvp;
xnd.ni_cnd.cn_context = ctx;
error = lookup(&xnd);
if (error)
goto out1;
xvp = xnd.ni_vp;
}
if (vnode_vtype(xvp) != VDIR) {
error = EINVAL;
vnode_put(xvp);
goto out1;
}
nx->nx_fh.nfh_xh.nxh_version = NFS_FH_VERSION;
nx->nx_fh.nfh_xh.nxh_fsid = nx->nx_fs->nxfs_id;
nx->nx_fh.nfh_xh.nxh_expid = nx->nx_id;
nx->nx_fh.nfh_xh.nxh_flags = 0;
nx->nx_fh.nfh_xh.nxh_reserved = 0;
nx->nx_fh.nfh_len = NFS_MAX_FID_SIZE;
error = VFS_VPTOFH(xvp, &nx->nx_fh.nfh_len, &nx->nx_fh.nfh_fid[0], NULL);
if (!error && (nx->nx_fh.nfh_len > (int)NFS_MAX_FID_SIZE)) {
error = EIO;
} else {
nx->nx_fh.nfh_xh.nxh_fidlen = nx->nx_fh.nfh_len;
nx->nx_fh.nfh_len += sizeof(nx->nx_fh.nfh_xh);
}
vnode_put(xvp);
if (error)
goto out1;
}
} else {
nx = NULL;
}
if (unxa->nxa_flags & NXA_DELETE) {
if (!nx) {
while ((nx = LIST_FIRST(&nxfs->nxfs_exports))) {
LIST_REMOVE(nx, nx_next);
LIST_REMOVE(nx, nx_hash);
nfsrv_free_addrlist(nx);
nx->nx_flags &= ~NX_DEFAULTEXPORT;
if (nx->nx_defopt.nxo_cred) {
kauth_cred_rele(nx->nx_defopt.nxo_cred);
nx->nx_defopt.nxo_cred = NULL;
}
FREE(nx->nx_path, M_TEMP);
FREE(nx, M_TEMP);
}
goto out1;
} else {
nfsrv_free_addrlist(nx);
nx->nx_flags &= ~NX_DEFAULTEXPORT;
if (nx->nx_defopt.nxo_cred) {
kauth_cred_rele(nx->nx_defopt.nxo_cred);
nx->nx_defopt.nxo_cred = NULL;
}
}
}
if (unxa->nxa_flags & NXA_ADD) {
error = nfsrv_hang_addrlist(nx, unxa);
if (!error)
mp->mnt_flag |= MNT_EXPORTED;
}
out1:
if (nx && !nx->nx_expcnt) {
LIST_REMOVE(nx, nx_next);
LIST_REMOVE(nx, nx_hash);
FREE(nx->nx_path, M_TEMP);
FREE(nx, M_TEMP);
}
if (LIST_EMPTY(&nxfs->nxfs_exports)) {
LIST_REMOVE(nxfs, nxfs_next);
FREE(nxfs->nxfs_path, M_TEMP);
FREE(nxfs, M_TEMP);
mp->mnt_flag &= ~MNT_EXPORTED;
}
out:
if (mvp) {
vnode_put(mvp);
nameidone(&mnd);
}
unlock_out:
lck_rw_done(&nfs_export_rwlock);
return (error);
}
static struct nfs_export_options *
nfsrv_export_lookup(struct nfs_export *nx, mbuf_t nam)
{
struct nfs_export_options *nxo = NULL;
struct nfs_netopt *no = NULL;
struct radix_node_head *rnh;
struct sockaddr *saddr;
if (nam != NULL) {
saddr = mbuf_data(nam);
rnh = nx->nx_rtable[saddr->sa_family];
if (rnh != NULL) {
no = (struct nfs_netopt *)
(*rnh->rnh_matchaddr)((caddr_t)saddr, rnh);
if (no && no->no_rnodes->rn_flags & RNF_ROOT)
no = NULL;
if (no)
nxo = &no->no_opt;
}
}
if ((nxo == NULL) && (nx->nx_flags & NX_DEFAULTEXPORT))
nxo = &nx->nx_defopt;
return (nxo);
}
static struct nfs_export *
nfsrv_fhtoexport(struct nfs_filehandle *nfhp)
{
struct nfs_export *nx;
nx = NFSEXPHASH(nfhp->nfh_xh.nxh_fsid, nfhp->nfh_xh.nxh_expid)->lh_first;
for (; nx; nx = LIST_NEXT(nx, nx_hash)) {
if (nx->nx_fs->nxfs_id != nfhp->nfh_xh.nxh_fsid)
continue;
if (nx->nx_id != nfhp->nfh_xh.nxh_expid)
continue;
break;
}
return nx;
}
int
nfsrv_fhtovp(
struct nfs_filehandle *nfhp,
mbuf_t nam,
__unused int pubflag,
vnode_t *vpp,
struct nfs_export **nxp,
struct nfs_export_options **nxop)
{
int error;
struct mount *mp;
*vpp = NULL;
*nxp = NULL;
*nxop = NULL;
if (nfhp->nfh_xh.nxh_version != NFS_FH_VERSION) {
return (ESTALE);
}
if (nfhp->nfh_len > NFS_MAX_FH_SIZE)
return (EBADRPC);
if (nfhp->nfh_len < (int)sizeof(nfhp->nfh_xh))
return (ESTALE);
if (nfhp->nfh_xh.nxh_flags & NXHF_INVALIDFH)
return (ESTALE);
#ifdef WEBNFS_ENABLED
if (nfs_ispublicfh(nfhp)) {
if (!pubflag || !nfs_pub.np_valid)
return (ESTALE);
nfhp = &nfs_pub.np_handle;
}
#endif
*nxp = nfsrv_fhtoexport(nfhp);
if (!*nxp)
return (ESTALE);
*nxop = nfsrv_export_lookup(*nxp, nam);
if (nam && (*nxop == NULL))
return (EACCES);
mp = vfs_getvfs_by_mntonname((*nxp)->nx_fs->nxfs_path);
if (!mp)
return (ESTALE);
error = VFS_FHTOVP(mp, nfhp->nfh_xh.nxh_fidlen, &nfhp->nfh_fid[0], vpp, NULL);
if (error)
return (error);
if (*vpp == NULL)
return (ESTALE);
return (0);
}
int
nfsrv_credcheck(
struct nfsrv_descript *nfsd,
__unused struct nfs_export *nx,
struct nfs_export_options *nxo)
{
if (nxo && nxo->nxo_cred) {
if ((nxo->nxo_flags & NX_MAPALL) ||
((nxo->nxo_flags & NX_MAPROOT) && !suser(nfsd->nd_cr, NULL))) {
kauth_cred_rele(nfsd->nd_cr);
nfsd->nd_cr = nxo->nxo_cred;
kauth_cred_ref(nfsd->nd_cr);
}
}
return (0);
}
int
nfs_ispublicfh(struct nfs_filehandle *nfhp)
{
char *cp = (char *)nfhp;
unsigned int i;
if (nfhp->nfh_len == 0)
return (TRUE);
if (nfhp->nfh_len != NFSX_V2FH)
return (FALSE);
for (i = 0; i < NFSX_V2FH; i++)
if (*cp++ != 0)
return (FALSE);
return (TRUE);
}
int
nfsrv_vptofh(
struct nfs_export *nx,
int v2,
struct nfs_filehandle *dnfhp,
vnode_t vp,
struct vfs_context *ctx,
struct nfs_filehandle *nfhp)
{
int error;
nfhp->nfh_xh.nxh_version = NFS_FH_VERSION;
nfhp->nfh_xh.nxh_fsid = nx->nx_fs->nxfs_id;
nfhp->nfh_xh.nxh_expid = nx->nx_id;
nfhp->nfh_xh.nxh_flags = 0;
nfhp->nfh_xh.nxh_reserved = 0;
if (v2)
bzero(&nfhp->nfh_fid[0], NFSV2_MAX_FID_SIZE);
if (dnfhp && nfsrv_fhmatch(dnfhp, &nx->nx_fh)) {
nfhp->nfh_len = v2 ? NFSX_V2FH : sizeof(nfhp->nfh_xh);
nfhp->nfh_xh.nxh_fidlen = 0;
nfhp->nfh_xh.nxh_flags = NXHF_INVALIDFH;
return (0);
}
nfhp->nfh_len = v2 ? NFSV2_MAX_FID_SIZE : NFS_MAX_FID_SIZE;
error = VFS_VPTOFH(vp, &nfhp->nfh_len, &nfhp->nfh_fid[0], ctx);
if (error)
return (error);
if (nfhp->nfh_len > (int)(v2 ? NFSV2_MAX_FID_SIZE : NFS_MAX_FID_SIZE))
return (EOVERFLOW);
nfhp->nfh_xh.nxh_fidlen = nfhp->nfh_len;
nfhp->nfh_len += sizeof(nfhp->nfh_xh);
if (v2 && (nfhp->nfh_len < NFSX_V2FH))
nfhp->nfh_len = NFSX_V2FH;
return (0);
}
int
nfsrv_fhmatch(struct nfs_filehandle *fh1, struct nfs_filehandle *fh2)
{
int len1, len2;
len1 = sizeof(fh1->nfh_xh) + fh1->nfh_xh.nxh_fidlen;
len2 = sizeof(fh2->nfh_xh) + fh2->nfh_xh.nxh_fidlen;
if (len1 != len2)
return (0);
if (bcmp(&fh1->nfh_xh, &fh2->nfh_xh, len1))
return (0);
return (1);
}
#endif
int
netaddr_match(family, haddr, nam)
int family;
union nethostaddr *haddr;
mbuf_t nam;
{
struct sockaddr_in *inetaddr;
switch (family) {
case AF_INET:
inetaddr = mbuf_data(nam);
if (inetaddr->sin_family == AF_INET &&
inetaddr->sin_addr.s_addr == haddr->had_inetaddr)
return (1);
break;
#if ISO
case AF_ISO:
{
struct sockaddr_iso *isoaddr1, *isoaddr2;
isoaddr1 = mbuf_data(nam);
isoaddr2 = mbuf_data(haddr->had_nam);
if (isoaddr1->siso_family == AF_ISO &&
isoaddr1->siso_nlen > 0 &&
isoaddr1->siso_nlen == isoaddr2->siso_nlen &&
SAME_ISOADDR(isoaddr1, isoaddr2))
return (1);
break;
}
#endif
default:
break;
};
return (0);
}
static nfsuint64 nfs_nullcookie = { { 0, 0 } };
nfsuint64 *
nfs_getcookie(np, off, add)
struct nfsnode *np;
off_t off;
int add;
{
struct nfsdmap *dp, *dp2;
int pos;
pos = off / NFS_DIRBLKSIZ;
if (pos == 0) {
#if DIAGNOSTIC
if (add)
panic("nfs getcookie add at 0");
#endif
return (&nfs_nullcookie);
}
pos--;
dp = np->n_cookies.lh_first;
if (!dp) {
if (add) {
MALLOC_ZONE(dp, struct nfsdmap *, sizeof(struct nfsdmap),
M_NFSDIROFF, M_WAITOK);
if (!dp)
return ((nfsuint64 *)0);
dp->ndm_eocookie = 0;
LIST_INSERT_HEAD(&np->n_cookies, dp, ndm_list);
} else
return ((nfsuint64 *)0);
}
while (pos >= NFSNUMCOOKIES) {
pos -= NFSNUMCOOKIES;
if (dp->ndm_list.le_next) {
if (!add && dp->ndm_eocookie < NFSNUMCOOKIES &&
pos >= dp->ndm_eocookie)
return ((nfsuint64 *)0);
dp = dp->ndm_list.le_next;
} else if (add) {
MALLOC_ZONE(dp2, struct nfsdmap *, sizeof(struct nfsdmap),
M_NFSDIROFF, M_WAITOK);
if (!dp2)
return ((nfsuint64 *)0);
dp2->ndm_eocookie = 0;
LIST_INSERT_AFTER(dp, dp2, ndm_list);
dp = dp2;
} else
return ((nfsuint64 *)0);
}
if (pos >= dp->ndm_eocookie) {
if (add)
dp->ndm_eocookie = pos + 1;
else
return ((nfsuint64 *)0);
}
return (&dp->ndm_cookies[pos]);
}
void
nfs_invaldir(vp)
vnode_t vp;
{
struct nfsnode *np = VTONFS(vp);
#if DIAGNOSTIC
if (vnode_vtype(vp) != VDIR)
panic("nfs: invaldir not dir");
#endif
np->n_direofoffset = 0;
np->n_cookieverf.nfsuquad[0] = 0;
np->n_cookieverf.nfsuquad[1] = 0;
if (np->n_cookies.lh_first)
np->n_cookies.lh_first->ndm_eocookie = 0;
}
#ifndef NFS_NOSERVER
int
nfsrv_errmap(nd, err)
struct nfsrv_descript *nd;
int err;
{
short *defaulterrp, *errp;
if (nd->nd_flag & ND_NFSV3) {
if (nd->nd_procnum <= NFSPROC_COMMIT) {
errp = defaulterrp = nfsrv_v3errmap[nd->nd_procnum];
while (*++errp) {
if (*errp == err)
return (err);
else if (*errp > err)
break;
}
return ((int)*defaulterrp);
} else
return (err & 0xffff);
}
if (err <= ELAST)
return ((int)nfsrv_v2errmap[err - 1]);
return (NFSERR_IO);
}
#endif