#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 <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 <vm/vm_pageout.h>
#include <kern/task.h>
#include <kern/sched_prim.h>
int nfs_vnop_lookup(struct vnop_lookup_args *);
int nfsspec_vnop_read(struct vnop_read_args *);
int nfsspec_vnop_write(struct vnop_write_args *);
int nfsspec_vnop_close(struct vnop_close_args *);
#if FIFO
int nfsfifo_vnop_read(struct vnop_read_args *);
int nfsfifo_vnop_write(struct vnop_write_args *);
int nfsfifo_vnop_close(struct vnop_close_args *);
#endif
int nfs_vnop_ioctl(struct vnop_ioctl_args *);
int nfs_vnop_select(struct vnop_select_args *);
int nfs_vnop_setattr(struct vnop_setattr_args *);
int nfs_vnop_fsync(struct vnop_fsync_args *);
int nfs_vnop_rename(struct vnop_rename_args *);
int nfs_vnop_readdir(struct vnop_readdir_args *);
int nfs_vnop_readlink(struct vnop_readlink_args *);
int nfs_vnop_pathconf(struct vnop_pathconf_args *);
int nfs_vnop_pagein(struct vnop_pagein_args *);
int nfs_vnop_pageout(struct vnop_pageout_args *);
int nfs_vnop_blktooff(struct vnop_blktooff_args *);
int nfs_vnop_offtoblk(struct vnop_offtoblk_args *);
int nfs_vnop_blockmap(struct vnop_blockmap_args *);
int nfs_vnop_monitor(struct vnop_monitor_args *);
int nfs3_vnop_create(struct vnop_create_args *);
int nfs3_vnop_mknod(struct vnop_mknod_args *);
int nfs3_vnop_getattr(struct vnop_getattr_args *);
int nfs3_vnop_link(struct vnop_link_args *);
int nfs3_vnop_mkdir(struct vnop_mkdir_args *);
int nfs3_vnop_rmdir(struct vnop_rmdir_args *);
int nfs3_vnop_symlink(struct vnop_symlink_args *);
vnop_t **nfsv2_vnodeop_p;
static struct vnodeopv_entry_desc nfsv2_vnodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)nfs_vnop_lookup },
{ &vnop_create_desc, (vnop_t *)nfs3_vnop_create },
{ &vnop_mknod_desc, (vnop_t *)nfs3_vnop_mknod },
{ &vnop_open_desc, (vnop_t *)nfs_vnop_open },
{ &vnop_close_desc, (vnop_t *)nfs_vnop_close },
{ &vnop_access_desc, (vnop_t *)nfs_vnop_access },
{ &vnop_getattr_desc, (vnop_t *)nfs3_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfs_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfs_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)nfs_vnop_ioctl },
{ &vnop_select_desc, (vnop_t *)nfs_vnop_select },
{ &vnop_revoke_desc, (vnop_t *)nfs_vnop_revoke },
{ &vnop_mmap_desc, (vnop_t *)nfs_vnop_mmap },
{ &vnop_mnomap_desc, (vnop_t *)nfs_vnop_mnomap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)nfs_vnop_remove },
{ &vnop_link_desc, (vnop_t *)nfs3_vnop_link },
{ &vnop_rename_desc, (vnop_t *)nfs_vnop_rename },
{ &vnop_mkdir_desc, (vnop_t *)nfs3_vnop_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)nfs3_vnop_rmdir },
{ &vnop_symlink_desc, (vnop_t *)nfs3_vnop_symlink },
{ &vnop_readdir_desc, (vnop_t *)nfs_vnop_readdir },
{ &vnop_readlink_desc, (vnop_t *)nfs_vnop_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)err_strategy },
{ &vnop_pathconf_desc, (vnop_t *)nfs_vnop_pathconf },
{ &vnop_advlock_desc, (vnop_t *)nfs_vnop_advlock },
{ &vnop_bwrite_desc, (vnop_t *)err_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_copyfile_desc, (vnop_t *)err_copyfile },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc nfsv2_vnodeop_opv_desc =
{ &nfsv2_vnodeop_p, nfsv2_vnodeop_entries };
vnop_t **nfsv4_vnodeop_p;
static struct vnodeopv_entry_desc nfsv4_vnodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)nfs_vnop_lookup },
{ &vnop_create_desc, (vnop_t *)nfs4_vnop_create },
{ &vnop_mknod_desc, (vnop_t *)nfs4_vnop_mknod },
{ &vnop_open_desc, (vnop_t *)nfs_vnop_open },
{ &vnop_close_desc, (vnop_t *)nfs_vnop_close },
{ &vnop_access_desc, (vnop_t *)nfs_vnop_access },
{ &vnop_getattr_desc, (vnop_t *)nfs4_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfs_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfs_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)nfs_vnop_ioctl },
{ &vnop_select_desc, (vnop_t *)nfs_vnop_select },
{ &vnop_revoke_desc, (vnop_t *)nfs_vnop_revoke },
{ &vnop_mmap_desc, (vnop_t *)nfs_vnop_mmap },
{ &vnop_mnomap_desc, (vnop_t *)nfs_vnop_mnomap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)nfs_vnop_remove },
{ &vnop_link_desc, (vnop_t *)nfs4_vnop_link },
{ &vnop_rename_desc, (vnop_t *)nfs_vnop_rename },
{ &vnop_mkdir_desc, (vnop_t *)nfs4_vnop_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)nfs4_vnop_rmdir },
{ &vnop_symlink_desc, (vnop_t *)nfs4_vnop_symlink },
{ &vnop_readdir_desc, (vnop_t *)nfs_vnop_readdir },
{ &vnop_readlink_desc, (vnop_t *)nfs_vnop_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)err_strategy },
{ &vnop_pathconf_desc, (vnop_t *)nfs_vnop_pathconf },
{ &vnop_advlock_desc, (vnop_t *)nfs_vnop_advlock },
{ &vnop_bwrite_desc, (vnop_t *)err_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_copyfile_desc, (vnop_t *)err_copyfile },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_getxattr_desc, (vnop_t *)nfs4_vnop_getxattr },
{ &vnop_setxattr_desc, (vnop_t *)nfs4_vnop_setxattr },
{ &vnop_removexattr_desc, (vnop_t *)nfs4_vnop_removexattr },
{ &vnop_listxattr_desc, (vnop_t *)nfs4_vnop_listxattr },
#if NAMEDSTREAMS
{ &vnop_getnamedstream_desc, (vnop_t *)nfs4_vnop_getnamedstream },
{ &vnop_makenamedstream_desc, (vnop_t *)nfs4_vnop_makenamedstream },
{ &vnop_removenamedstream_desc, (vnop_t *)nfs4_vnop_removenamedstream },
#endif
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc nfsv4_vnodeop_opv_desc =
{ &nfsv4_vnodeop_p, nfsv4_vnodeop_entries };
vnop_t **spec_nfsv2nodeop_p;
static struct vnodeopv_entry_desc spec_nfsv2nodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)spec_lookup },
{ &vnop_create_desc, (vnop_t *)spec_create },
{ &vnop_mknod_desc, (vnop_t *)spec_mknod },
{ &vnop_open_desc, (vnop_t *)spec_open },
{ &vnop_close_desc, (vnop_t *)nfsspec_vnop_close },
{ &vnop_getattr_desc, (vnop_t *)nfs3_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfsspec_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfsspec_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)spec_ioctl },
{ &vnop_select_desc, (vnop_t *)spec_select },
{ &vnop_revoke_desc, (vnop_t *)spec_revoke },
{ &vnop_mmap_desc, (vnop_t *)spec_mmap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)spec_remove },
{ &vnop_link_desc, (vnop_t *)spec_link },
{ &vnop_rename_desc, (vnop_t *)spec_rename },
{ &vnop_mkdir_desc, (vnop_t *)spec_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)spec_rmdir },
{ &vnop_symlink_desc, (vnop_t *)spec_symlink },
{ &vnop_readdir_desc, (vnop_t *)spec_readdir },
{ &vnop_readlink_desc, (vnop_t *)spec_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)spec_strategy },
{ &vnop_pathconf_desc, (vnop_t *)spec_pathconf },
{ &vnop_advlock_desc, (vnop_t *)spec_advlock },
{ &vnop_bwrite_desc, (vnop_t *)vn_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc spec_nfsv2nodeop_opv_desc =
{ &spec_nfsv2nodeop_p, spec_nfsv2nodeop_entries };
vnop_t **spec_nfsv4nodeop_p;
static struct vnodeopv_entry_desc spec_nfsv4nodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)spec_lookup },
{ &vnop_create_desc, (vnop_t *)spec_create },
{ &vnop_mknod_desc, (vnop_t *)spec_mknod },
{ &vnop_open_desc, (vnop_t *)spec_open },
{ &vnop_close_desc, (vnop_t *)nfsspec_vnop_close },
{ &vnop_getattr_desc, (vnop_t *)nfs4_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfsspec_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfsspec_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)spec_ioctl },
{ &vnop_select_desc, (vnop_t *)spec_select },
{ &vnop_revoke_desc, (vnop_t *)spec_revoke },
{ &vnop_mmap_desc, (vnop_t *)spec_mmap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)spec_remove },
{ &vnop_link_desc, (vnop_t *)spec_link },
{ &vnop_rename_desc, (vnop_t *)spec_rename },
{ &vnop_mkdir_desc, (vnop_t *)spec_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)spec_rmdir },
{ &vnop_symlink_desc, (vnop_t *)spec_symlink },
{ &vnop_readdir_desc, (vnop_t *)spec_readdir },
{ &vnop_readlink_desc, (vnop_t *)spec_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)spec_strategy },
{ &vnop_pathconf_desc, (vnop_t *)spec_pathconf },
{ &vnop_advlock_desc, (vnop_t *)spec_advlock },
{ &vnop_bwrite_desc, (vnop_t *)vn_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_getxattr_desc, (vnop_t *)nfs4_vnop_getxattr },
{ &vnop_setxattr_desc, (vnop_t *)nfs4_vnop_setxattr },
{ &vnop_removexattr_desc, (vnop_t *)nfs4_vnop_removexattr },
{ &vnop_listxattr_desc, (vnop_t *)nfs4_vnop_listxattr },
#if NAMEDSTREAMS
{ &vnop_getnamedstream_desc, (vnop_t *)nfs4_vnop_getnamedstream },
{ &vnop_makenamedstream_desc, (vnop_t *)nfs4_vnop_makenamedstream },
{ &vnop_removenamedstream_desc, (vnop_t *)nfs4_vnop_removenamedstream },
#endif
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc spec_nfsv4nodeop_opv_desc =
{ &spec_nfsv4nodeop_p, spec_nfsv4nodeop_entries };
#if FIFO
vnop_t **fifo_nfsv2nodeop_p;
static struct vnodeopv_entry_desc fifo_nfsv2nodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)fifo_lookup },
{ &vnop_create_desc, (vnop_t *)fifo_create },
{ &vnop_mknod_desc, (vnop_t *)fifo_mknod },
{ &vnop_open_desc, (vnop_t *)fifo_open },
{ &vnop_close_desc, (vnop_t *)nfsfifo_vnop_close },
{ &vnop_getattr_desc, (vnop_t *)nfs3_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfsfifo_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfsfifo_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)fifo_ioctl },
{ &vnop_select_desc, (vnop_t *)fifo_select },
{ &vnop_revoke_desc, (vnop_t *)fifo_revoke },
{ &vnop_mmap_desc, (vnop_t *)fifo_mmap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)fifo_remove },
{ &vnop_link_desc, (vnop_t *)fifo_link },
{ &vnop_rename_desc, (vnop_t *)fifo_rename },
{ &vnop_mkdir_desc, (vnop_t *)fifo_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)fifo_rmdir },
{ &vnop_symlink_desc, (vnop_t *)fifo_symlink },
{ &vnop_readdir_desc, (vnop_t *)fifo_readdir },
{ &vnop_readlink_desc, (vnop_t *)fifo_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)fifo_strategy },
{ &vnop_pathconf_desc, (vnop_t *)fifo_pathconf },
{ &vnop_advlock_desc, (vnop_t *)fifo_advlock },
{ &vnop_bwrite_desc, (vnop_t *)vn_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc fifo_nfsv2nodeop_opv_desc =
{ &fifo_nfsv2nodeop_p, fifo_nfsv2nodeop_entries };
vnop_t **fifo_nfsv4nodeop_p;
static struct vnodeopv_entry_desc fifo_nfsv4nodeop_entries[] = {
{ &vnop_default_desc, (vnop_t *)vn_default_error },
{ &vnop_lookup_desc, (vnop_t *)fifo_lookup },
{ &vnop_create_desc, (vnop_t *)fifo_create },
{ &vnop_mknod_desc, (vnop_t *)fifo_mknod },
{ &vnop_open_desc, (vnop_t *)fifo_open },
{ &vnop_close_desc, (vnop_t *)nfsfifo_vnop_close },
{ &vnop_getattr_desc, (vnop_t *)nfs4_vnop_getattr },
{ &vnop_setattr_desc, (vnop_t *)nfs_vnop_setattr },
{ &vnop_read_desc, (vnop_t *)nfsfifo_vnop_read },
{ &vnop_write_desc, (vnop_t *)nfsfifo_vnop_write },
{ &vnop_ioctl_desc, (vnop_t *)fifo_ioctl },
{ &vnop_select_desc, (vnop_t *)fifo_select },
{ &vnop_revoke_desc, (vnop_t *)fifo_revoke },
{ &vnop_mmap_desc, (vnop_t *)fifo_mmap },
{ &vnop_fsync_desc, (vnop_t *)nfs_vnop_fsync },
{ &vnop_remove_desc, (vnop_t *)fifo_remove },
{ &vnop_link_desc, (vnop_t *)fifo_link },
{ &vnop_rename_desc, (vnop_t *)fifo_rename },
{ &vnop_mkdir_desc, (vnop_t *)fifo_mkdir },
{ &vnop_rmdir_desc, (vnop_t *)fifo_rmdir },
{ &vnop_symlink_desc, (vnop_t *)fifo_symlink },
{ &vnop_readdir_desc, (vnop_t *)fifo_readdir },
{ &vnop_readlink_desc, (vnop_t *)fifo_readlink },
{ &vnop_inactive_desc, (vnop_t *)nfs_vnop_inactive },
{ &vnop_reclaim_desc, (vnop_t *)nfs_vnop_reclaim },
{ &vnop_strategy_desc, (vnop_t *)fifo_strategy },
{ &vnop_pathconf_desc, (vnop_t *)fifo_pathconf },
{ &vnop_advlock_desc, (vnop_t *)fifo_advlock },
{ &vnop_bwrite_desc, (vnop_t *)vn_bwrite },
{ &vnop_pagein_desc, (vnop_t *)nfs_vnop_pagein },
{ &vnop_pageout_desc, (vnop_t *)nfs_vnop_pageout },
{ &vnop_blktooff_desc, (vnop_t *)nfs_vnop_blktooff },
{ &vnop_offtoblk_desc, (vnop_t *)nfs_vnop_offtoblk },
{ &vnop_blockmap_desc, (vnop_t *)nfs_vnop_blockmap },
{ &vnop_getxattr_desc, (vnop_t *)nfs4_vnop_getxattr },
{ &vnop_setxattr_desc, (vnop_t *)nfs4_vnop_setxattr },
{ &vnop_removexattr_desc, (vnop_t *)nfs4_vnop_removexattr },
{ &vnop_listxattr_desc, (vnop_t *)nfs4_vnop_listxattr },
#if NAMEDSTREAMS
{ &vnop_getnamedstream_desc, (vnop_t *)nfs4_vnop_getnamedstream },
{ &vnop_makenamedstream_desc, (vnop_t *)nfs4_vnop_makenamedstream },
{ &vnop_removenamedstream_desc, (vnop_t *)nfs4_vnop_removenamedstream },
#endif
{ &vnop_monitor_desc, (vnop_t *)nfs_vnop_monitor },
{ NULL, NULL }
};
struct vnodeopv_desc fifo_nfsv4nodeop_opv_desc =
{ &fifo_nfsv4nodeop_p, fifo_nfsv4nodeop_entries };
#endif
int nfs_sillyrename(nfsnode_t,nfsnode_t,struct componentname *,vfs_context_t);
int
nfs_node_access_slot(nfsnode_t np, uid_t uid, int add)
{
int slot;
for (slot=0; slot < NFS_ACCESS_CACHE_SIZE; slot++)
if (np->n_accessuid[slot] == uid)
break;
if (slot == NFS_ACCESS_CACHE_SIZE) {
if (!add)
return (-1);
slot = np->n_access[NFS_ACCESS_CACHE_SIZE];
np->n_access[NFS_ACCESS_CACHE_SIZE] = (slot + 1) % NFS_ACCESS_CACHE_SIZE;
}
return (slot);
}
int
nfs3_access_rpc(nfsnode_t np, u_int32_t *access, vfs_context_t ctx)
{
int error = 0, lockerror = ENOENT, status, slot;
uint32_t access_result = 0;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct timeval now;
uid_t uid;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(NFS_VER3) + NFSX_UNSIGNED);
nfsm_chain_add_fh(error, &nmreq, NFS_VER3, np->n_fhp, np->n_fhsize);
nfsm_chain_add_32(error, &nmreq, *access);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC_ACCESS, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
if (!error)
error = status;
nfsm_chain_get_32(error, &nmrep, access_result);
nfsmout_if(error);
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;
if ((*access & NFS_ACCESS_DELETE) &&
!(np->n_access[slot] & NFS_ACCESS_DELETE))
np->n_access[slot] |= NFS_ACCESS_DELETE;
if (nfs_access_dotzfs && (np->n_flag & NISDOTZFSCHILD))
np->n_access[slot] |= (NFS_ACCESS_MODIFY|NFS_ACCESS_EXTEND|NFS_ACCESS_DELETE);
*access = np->n_access[slot];
nfsmout:
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_vnop_access(
struct vnop_access_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
int error = 0, slot, dorpc;
u_int32_t access, waccess;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
int nfsvers;
struct timeval now;
uid_t uid;
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if (nfsvers == NFS_VER2) {
if ((ap->a_action & KAUTH_VNODE_WRITE_RIGHTS) &&
vfs_isrdonly(vnode_mount(vp)))
return (EROFS);
return (0);
}
access = 0;
if (vnode_isdir(vp)) {
if (ap->a_action &
(KAUTH_VNODE_LIST_DIRECTORY |
KAUTH_VNODE_READ_EXTATTRIBUTES))
access |= NFS_ACCESS_READ;
if (ap->a_action & KAUTH_VNODE_SEARCH)
access |= NFS_ACCESS_LOOKUP;
if (ap->a_action &
(KAUTH_VNODE_ADD_FILE |
KAUTH_VNODE_ADD_SUBDIRECTORY))
access |= NFS_ACCESS_MODIFY | NFS_ACCESS_EXTEND;
if (ap->a_action & KAUTH_VNODE_DELETE_CHILD)
access |= NFS_ACCESS_MODIFY;
} else {
if (ap->a_action &
(KAUTH_VNODE_READ_DATA |
KAUTH_VNODE_READ_EXTATTRIBUTES))
access |= NFS_ACCESS_READ;
if (ap->a_action & KAUTH_VNODE_WRITE_DATA)
access |= NFS_ACCESS_MODIFY | NFS_ACCESS_EXTEND;
if (ap->a_action & KAUTH_VNODE_APPEND_DATA)
access |= NFS_ACCESS_EXTEND;
if (ap->a_action & KAUTH_VNODE_EXECUTE)
access |= NFS_ACCESS_EXECUTE;
}
if (ap->a_action & KAUTH_VNODE_DELETE)
access |= NFS_ACCESS_DELETE;
if (ap->a_action &
(KAUTH_VNODE_WRITE_ATTRIBUTES |
KAUTH_VNODE_WRITE_EXTATTRIBUTES |
KAUTH_VNODE_WRITE_SECURITY))
access |= NFS_ACCESS_MODIFY;
if (ap->a_action & KAUTH_VNODE_CHANGE_OWNER)
access |= NFS_ACCESS_MODIFY;
if (nfs_access_cache_timeout > 0) {
waccess = NFS_ACCESS_READ | NFS_ACCESS_MODIFY |
NFS_ACCESS_EXTEND | NFS_ACCESS_EXECUTE |
NFS_ACCESS_DELETE | NFS_ACCESS_LOOKUP;
} else {
waccess = access;
}
if ((error = nfs_node_lock(np)))
return (error);
uid = kauth_cred_getuid(vfs_context_ucred(ctx));
slot = nfs_node_access_slot(np, uid, 0);
dorpc = 1;
if (access == 0) {
dorpc = 0;
waccess = 0;
} else if (NACCESSVALID(np, slot)) {
microuptime(&now);
if ((now.tv_sec < (np->n_accessstamp[slot] + nfs_access_cache_timeout)) &&
((np->n_access[slot] & access) == access)) {
dorpc = 0;
waccess = np->n_access[slot];
}
}
nfs_node_unlock(np);
if (dorpc) {
error = nmp->nm_funcs->nf_access_rpc(np, &waccess, ctx);
}
if (!error && ((waccess & access) != access))
error = EACCES;
return (error);
}
int
nfs_vnop_open(
struct vnop_open_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
int error, accessMode, denyMode, opened = 0;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
enum vtype vtype;
if (!(ap->a_mode & (FREAD|FWRITE)))
return (EINVAL);
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
if (np->n_flag & NREVOKE)
return (EIO);
vtype = vnode_vtype(vp);
if ((vtype != VREG) && (vtype != VDIR) && (vtype != VLNK))
return (EACCES);
if (ISSET(np->n_flag, NUPDATESIZE))
nfs_data_update_size(np, 0);
if ((error = nfs_node_lock(np)))
return (error);
if (np->n_flag & NNEEDINVALIDATE) {
np->n_flag &= ~NNEEDINVALIDATE;
if (vtype == VDIR)
nfs_invaldir(np);
nfs_node_unlock(np);
nfs_vinvalbuf(vp, V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
if ((error = nfs_node_lock(np)))
return (error);
}
if (vtype == VREG)
np->n_lastrahead = -1;
if (np->n_flag & NMODIFIED) {
if (vtype == VDIR)
nfs_invaldir(np);
nfs_node_unlock(np);
if ((error = nfs_vinvalbuf(vp, V_SAVE|V_IGNORE_WRITEERR, ctx, 1)))
return (error);
} else {
nfs_node_unlock(np);
}
if ((error = nfs_getattr(np, NULL, ctx, NGA_UNCACHED)))
return (error);
if (vtype != VREG) {
lck_mtx_lock(&np->n_openlock);
np->n_openrefcnt++;
lck_mtx_unlock(&np->n_openlock);
return (0);
}
accessMode = 0;
if (ap->a_mode & FREAD)
accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
if (ap->a_mode & FWRITE)
accessMode |= NFS_OPEN_SHARE_ACCESS_WRITE;
if (ap->a_mode & O_EXLOCK)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
else if (ap->a_mode & O_SHLOCK)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else
denyMode = NFS_OPEN_SHARE_DENY_NONE;
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, vfs_context_thread(ctx));
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, accessMode, denyMode, 1);
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
NP(np, "nfs_vnop_open: LOST %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
error = EIO;
}
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(nofp, vfs_context_thread(ctx));
nofp = NULL;
if (!error)
goto restart;
}
if (!error)
error = nfs_open_file_set_busy(nofp, vfs_context_thread(ctx));
if (error) {
nofp = NULL;
goto out;
}
if (nmp->nm_vers < NFS_VER4) {
nfs_open_file_add_open(nofp, accessMode, denyMode, 0);
goto out;
}
if ((nofp->nof_flags & NFS_OPEN_FILE_CREATE) &&
(nofp->nof_creator == current_thread()) &&
(accessMode == NFS_OPEN_SHARE_ACCESS_BOTH) &&
(denyMode == NFS_OPEN_SHARE_DENY_NONE)) {
nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
nofp->nof_creator = NULL;
} else {
if (!opened)
error = nfs4_open(np, nofp, accessMode, denyMode, ctx);
if ((error == EACCES) && (nofp->nof_flags & NFS_OPEN_FILE_CREATE) &&
(nofp->nof_creator == current_thread())) {
if (denyMode != NFS_OPEN_SHARE_DENY_NONE)
NP(np, "nfs_vnop_open: deny mode foregone on create, %d", kauth_cred_getuid(nofp->nof_owner->noo_cred));
nofp->nof_creator = NULL;
error = 0;
}
if (error)
goto out;
opened = 1;
if ((nofp->nof_flags & NFS_OPEN_FILE_CREATE) &&
(nofp->nof_creator == current_thread())) {
error = nfs_close(np, nofp, NFS_OPEN_SHARE_ACCESS_BOTH, NFS_OPEN_SHARE_DENY_NONE, ctx);
if (error)
NP(np, "nfs_vnop_open: create close error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
if (!nfs_mount_state_error_should_restart(error)) {
error = 0;
nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
}
}
}
out:
if (nofp)
nfs_open_file_clear_busy(nofp);
if (nfs_mount_state_in_use_end(nmp, error)) {
nofp = NULL;
goto restart;
}
if (error)
NP(np, "nfs_vnop_open: error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
if (noop)
nfs_open_owner_rele(noop);
if (!error && vtype == VREG && (ap->a_mode & FWRITE)) {
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_writers++;
lck_mtx_unlock(&nmp->nm_lock);
}
return (error);
}
static uint32_t
nfs_no_of_open_file_writers(nfsnode_t np)
{
uint32_t writers = 0;
struct nfs_open_file *nofp;
TAILQ_FOREACH(nofp, &np->n_opens, nof_link) {
writers += nofp->nof_w + nofp->nof_rw + nofp->nof_w_dw + nofp->nof_rw_dw +
nofp->nof_w_drw + nofp->nof_rw_drw + nofp->nof_d_w_dw +
nofp->nof_d_rw_dw + nofp->nof_d_w_drw + nofp->nof_d_rw_drw +
nofp->nof_d_w + nofp->nof_d_rw;
}
return (writers);
}
int
nfs_vnop_close(
struct vnop_close_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
int error = 0, error1, nfsvers;
int fflag = ap->a_fflag;
enum vtype vtype;
int accessMode, denyMode;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
vtype = vnode_vtype(vp);
if (ISSET(np->n_flag, NUPDATESIZE))
nfs_data_update_size(np, 0);
nfs_node_lock_force(np);
if (np->n_flag & NNEEDINVALIDATE) {
np->n_flag &= ~NNEEDINVALIDATE;
nfs_node_unlock(np);
nfs_vinvalbuf(vp, V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
nfs_node_lock_force(np);
}
if ((vtype == VREG) && (np->n_flag & NMODIFIED) && (fflag & FWRITE)) {
nfs_node_unlock(np);
if (nfsvers != NFS_VER2)
error = nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), 0);
else
error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1);
nfs_node_lock_force(np);
NATTRINVALIDATE(np);
}
if (np->n_flag & NWRITEERR) {
np->n_flag &= ~NWRITEERR;
error = np->n_error;
}
nfs_node_unlock(np);
if (vtype != VREG) {
lck_mtx_lock(&np->n_openlock);
if (np->n_openrefcnt == 0) {
if (fflag & (FREAD|FWRITE)) {
NP(np, "nfs_vnop_close: open reference underrun");
error = EINVAL;
}
} else if (fflag & (FREAD|FWRITE)) {
np->n_openrefcnt--;
} else {
np->n_openrefcnt = 0;
}
lck_mtx_unlock(&np->n_openlock);
return (error);
}
error1 = error;
accessMode = 0;
if (fflag & FREAD)
accessMode |= NFS_OPEN_SHARE_ACCESS_READ;
if (fflag & FWRITE)
accessMode |= NFS_OPEN_SHARE_ACCESS_WRITE;
#if 0 // Not yet
if (fflag & FHASLOCK) {
if (nofp->nof_deny & NFS_OPEN_SHARE_DENY_READ)
denyMode = NFS_OPEN_SHARE_DENY_BOTH;
else if (nofp->nof_deny & NFS_OPEN_SHARE_DENY_WRITE)
denyMode = NFS_OPEN_SHARE_DENY_WRITE;
else
denyMode = NFS_OPEN_SHARE_DENY_NONE;
} else {
denyMode = NFS_OPEN_SHARE_DENY_NONE;
}
#else
denyMode = NFS_OPEN_SHARE_DENY_NONE;
#endif
if (!accessMode) {
uint32_t writers;
mount_t mp = vnode_mount(vp);
int force = (!mp || (mp->mnt_kern_flag & MNTK_FRCUNMOUNT));
writers = nfs_no_of_open_file_writers(np);
nfs_release_open_state_for_node(np, force);
if (writers) {
lck_mtx_lock(&nmp->nm_lock);
if (writers > nmp->nm_writers) {
NP(np, "nfs_vnop_close: number of write opens for mount underrun. Node has %d"
" opens for write. Mount has total of %d opens for write\n",
writers, nmp->nm_writers);
nmp->nm_writers = 0;
} else {
nmp->nm_writers -= writers;
}
lck_mtx_unlock(&nmp->nm_lock);
}
return (error);
} else if (fflag & FWRITE) {
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_writers == 0) {
NP(np, "nfs_vnop_close: removing open writer from mount, but mount has no files open for writing");
} else {
nmp->nm_writers--;
}
lck_mtx_unlock(&nmp->nm_lock);
}
noop = nfs_open_owner_find(nmp, vfs_context_ucred(ctx), 0);
if (!noop) {
return (EIO);
}
restart:
error = nfs_mount_state_in_use_start(nmp, NULL);
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
error = nfs_open_file_find(np, noop, &nofp, 0, 0, 0);
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) {
NP(np, "nfs_vnop_close: no open file for owner, error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
error = EBADF;
goto out;
}
error = nfs_open_file_set_busy(nofp, NULL);
if (error) {
nofp = NULL;
goto out;
}
error = nfs_close(np, nofp, accessMode, denyMode, ctx);
if (error)
NP(np, "nfs_vnop_close: close error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
out:
if (nofp)
nfs_open_file_clear_busy(nofp);
if (nfs_mount_state_in_use_end(nmp, error)) {
nofp = NULL;
goto restart;
}
if (!error)
error = error1;
if (error)
NP(np, "nfs_vnop_close: error %d, %d", error, kauth_cred_getuid(noop->noo_cred));
if (noop)
nfs_open_owner_rele(noop);
return (error);
}
int
nfs_close(
nfsnode_t np,
struct nfs_open_file *nofp,
uint32_t accessMode,
uint32_t denyMode,
vfs_context_t ctx)
{
struct nfs_lock_owner *nlop;
int error = 0, changed = 0, delegated = 0, closed = 0, downgrade = 0;
uint32_t newAccessMode, newDenyMode;
if (((accessMode & nofp->nof_access) != accessMode) || ((denyMode & nofp->nof_deny) != denyMode))
NP(np, "nfs_close: mode mismatch %d %d, current %d %d, %d",
accessMode, denyMode, nofp->nof_access, nofp->nof_deny,
kauth_cred_getuid(nofp->nof_owner->noo_cred));
if (denyMode == NFS_OPEN_SHARE_DENY_NONE) {
if ((accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) &&
(nofp->nof_w == 0) && (nofp->nof_d_w == 0) &&
(nofp->nof_rw || nofp->nof_d_rw))
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
} else if (denyMode == NFS_OPEN_SHARE_DENY_WRITE) {
if ((accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) &&
(nofp->nof_w_dw == 0) && (nofp->nof_d_w_dw == 0) &&
(nofp->nof_rw_dw || nofp->nof_d_rw_dw))
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
} else {
if ((accessMode == NFS_OPEN_SHARE_ACCESS_WRITE) &&
(nofp->nof_w_drw == 0) && (nofp->nof_d_w_drw == 0) &&
(nofp->nof_rw_drw || nofp->nof_d_rw_drw))
accessMode = NFS_OPEN_SHARE_ACCESS_BOTH;
}
nfs_open_file_remove_open_find(nofp, accessMode, denyMode, &newAccessMode, &newDenyMode, &delegated);
if ((newAccessMode != nofp->nof_access) || (newDenyMode != nofp->nof_deny))
changed = 1;
else
changed = 0;
if (NFSTONMP(np)->nm_vers < NFS_VER4)
goto v3close;
if ((newAccessMode == 0) || (nofp->nof_opencnt == 1)) {
nfs_wait_bufs(np);
closed = 1;
if (!delegated && !(nofp->nof_flags & NFS_OPEN_FILE_LOST))
error = nfs4_close_rpc(np, nofp, vfs_context_thread(ctx), vfs_context_ucred(ctx), 0);
if (error == NFSERR_LOCKS_HELD) {
nlop = nfs_lock_owner_find(np, vfs_context_proc(ctx), 0);
if (nlop) {
nfs4_unlock_rpc(np, nlop, F_WRLCK, 0, UINT64_MAX,
0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
nfs_lock_owner_rele(nlop);
}
error = nfs4_close_rpc(np, nofp, vfs_context_thread(ctx), vfs_context_ucred(ctx), 0);
}
} else if (changed) {
if (!delegated && !(nofp->nof_flags & NFS_OPEN_FILE_LOST)) {
downgrade = 1;
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)
nfs4_claim_delegated_state_for_open_file(nofp, 0);
nfs_open_file_remove_open(nofp, accessMode, denyMode);
error = nfs4_open_downgrade_rpc(np, nofp, ctx);
if (error)
nfs_open_file_add_open(nofp, accessMode, denyMode, delegated);
}
}
if (error) {
NP(np, "nfs_close: error %d, %d", error, kauth_cred_getuid(nofp->nof_owner->noo_cred));
return (error);
}
v3close:
if (!downgrade)
nfs_open_file_remove_open(nofp, accessMode, denyMode);
if (closed) {
lck_mtx_lock(&nofp->nof_lock);
if (nofp->nof_r || nofp->nof_d_r || nofp->nof_w || nofp->nof_d_w || nofp->nof_d_rw ||
(nofp->nof_rw && !((nofp->nof_flags & NFS_OPEN_FILE_CREATE) && !nofp->nof_creator && (nofp->nof_rw == 1))) ||
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 || 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)
NP(np, "nfs_close: unexpected count: %u.%u %u.%u %u.%u dw %u.%u %u.%u %u.%u drw %u.%u %u.%u %u.%u flags 0x%x, %d",
nofp->nof_r, nofp->nof_d_r, nofp->nof_w, nofp->nof_d_w,
nofp->nof_rw, nofp->nof_d_rw, 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,
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_flags,
kauth_cred_getuid(nofp->nof_owner->noo_cred));
nofp->nof_access = nofp->nof_deny = 0;
nofp->nof_mmap_access = nofp->nof_mmap_deny = 0;
nofp->nof_r = nofp->nof_d_r = 0;
nofp->nof_w = nofp->nof_d_w = 0;
nofp->nof_rw = nofp->nof_d_rw = 0;
nofp->nof_r_dw = nofp->nof_d_r_dw = 0;
nofp->nof_w_dw = nofp->nof_d_w_dw = 0;
nofp->nof_rw_dw = nofp->nof_d_rw_dw = 0;
nofp->nof_r_drw = nofp->nof_d_r_drw = 0;
nofp->nof_w_drw = nofp->nof_d_w_drw = 0;
nofp->nof_rw_drw = nofp->nof_d_rw_drw = 0;
nofp->nof_flags &= ~NFS_OPEN_FILE_CREATE;
lck_mtx_unlock(&nofp->nof_lock);
}
if (nofp->nof_flags & NFS_OPEN_FILE_LOST) {
error = EIO;
NP(np, "nfs_close: LOST%s, %d", !nofp->nof_opencnt ? " (last)" : "",
kauth_cred_getuid(nofp->nof_owner->noo_cred));
}
return (error);
}
int
nfs3_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, rpcflags = 0;
struct nfsm_chain nmreq, nmrep;
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if (flags & NGA_MONITOR)
rpcflags = R_RECOVER;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(nfsvers));
if (nfsvers != NFS_VER2)
nfsm_chain_add_32(error, &nmreq, fhsize);
nfsm_chain_add_opaque(error, &nmreq, fhp, fhsize);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request2(np, mp, &nmreq, NFSPROC_GETATTR,
vfs_context_thread(ctx), vfs_context_ucred(ctx),
NULL, rpcflags, &nmrep, xidp, &status);
if (!error)
error = status;
nfsmout_if(error);
error = nfs_parsefattr(&nmrep, nfsvers, nvap);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_getattr(nfsnode_t np, struct nfs_vattr *nvap, vfs_context_t ctx, int flags)
{
struct nfsmount *nmp;
int error = 0, nfsvers, inprogset = 0, wanted = 0, avoidfloods;
struct nfs_vattr nvattr;
struct timespec ts = { 2, 0 };
u_int64_t xid;
FSDBG_TOP(513, np->n_size, np, np->n_vattr.nva_size, np->n_flag);
if (!(nmp = NFSTONMP(np)))
return (ENXIO);
nfsvers = nmp->nm_vers;
if (!nvap)
nvap = &nvattr;
NVATTR_INIT(nvap);
if (np->n_flag & (NACC | NUPD)) {
nfs_node_lock_force(np);
np->n_flag |= NCHG;
nfs_node_unlock(np);
}
if (ISSET(np->n_flag, NUPDATESIZE))
nfs_data_update_size(np, 0);
error = nfs_node_lock(np);
nfsmout_if(error);
if (!(flags & (NGA_UNCACHED|NGA_MONITOR)) || ((nfsvers >= NFS_VER4) && (np->n_openflags & N_DELEG_MASK))) {
while (1) {
error = nfs_getattrcache(np, nvap, flags);
if (!error || (error != ENOENT)) {
nfs_node_unlock(np);
goto nfsmout;
}
error = 0;
if (!ISSET(np->n_flag, NGETATTRINPROG))
break;
if (flags & NGA_MONITOR) {
error = EINPROGRESS;
nfs_node_unlock(np);
goto nfsmout;
}
SET(np->n_flag, NGETATTRWANT);
msleep(np, &np->n_lock, PZERO-1, "nfsgetattrwant", &ts);
if ((error = nfs_sigintr(NFSTONMP(np), NULL, vfs_context_thread(ctx), 0))) {
nfs_node_unlock(np);
goto nfsmout;
}
}
SET(np->n_flag, NGETATTRINPROG);
inprogset = 1;
} else if (!ISSET(np->n_flag, NGETATTRINPROG)) {
SET(np->n_flag, NGETATTRINPROG);
inprogset = 1;
} else if (flags & NGA_MONITOR) {
error = EINPROGRESS;
}
nfs_node_unlock(np);
nmp = NFSTONMP(np);
if (!nmp)
error = ENXIO;
if (error)
goto nfsmout;
if (!(flags & NGA_ACL) && (nfsvers != NFS_VER2) && nfs_access_for_getattr && (nfs_access_cache_timeout > 0)) {
if (nfs_attrcachetimeout(np) > 0) {
u_int32_t access = NFS_ACCESS_ALL;
error = nmp->nm_funcs->nf_access_rpc(np, &access, ctx);
if (error)
goto nfsmout;
nfs_node_lock_force(np);
error = nfs_getattrcache(np, nvap, flags);
nfs_node_unlock(np);
if (!error || (error != ENOENT))
goto nfsmout;
error = 0;
}
}
avoidfloods = 0;
tryagain:
error = nmp->nm_funcs->nf_getattr_rpc(np, NULL, np->n_fhp, np->n_fhsize, flags, ctx, nvap, &xid);
if (!error) {
nfs_node_lock_force(np);
error = nfs_loadattrcache(np, nvap, &xid, 0);
nfs_node_unlock(np);
}
nfsmout_if(error);
if (!xid) {
FSDBG(513, -1, np, np->n_xid >> 32, np->n_xid);
if (avoidfloods++ < 20)
goto tryagain;
}
nfsmout:
nfs_node_lock_force(np);
if (inprogset) {
wanted = ISSET(np->n_flag, NGETATTRWANT);
CLR(np->n_flag, (NGETATTRINPROG | NGETATTRWANT));
}
if (!error) {
vnode_t vp = NFSTOV(np);
enum vtype vtype = vnode_vtype(vp);
if ((vtype == VDIR) && NFS_CHANGED_NC(nfsvers, np, nvap)) {
FSDBG(513, -1, np, 0, np);
np->n_flag &= ~NNEGNCENTRIES;
cache_purge(vp);
np->n_ncgen++;
NFS_CHANGED_UPDATE_NC(nfsvers, np, nvap);
}
if (NFS_CHANGED(nfsvers, np, nvap)) {
FSDBG(513, -1, np, -1, np);
if (vtype == VDIR)
nfs_invaldir(np);
nfs_node_unlock(np);
if (wanted)
wakeup(np);
error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1);
FSDBG(513, -1, np, -2, error);
if (!error) {
nfs_node_lock_force(np);
NFS_CHANGED_UPDATE(nfsvers, np, nvap);
nfs_node_unlock(np);
}
} else {
nfs_node_unlock(np);
if (wanted)
wakeup(np);
}
} else {
nfs_node_unlock(np);
if (wanted)
wakeup(np);
}
if (nvap == &nvattr) {
NVATTR_CLEANUP(nvap);
} else if (!(flags & NGA_ACL)) {
NFS_BITMAP_CLR(nvap->nva_bitmap, NFS_FATTR_ACL);
if (nvap->nva_acl) {
kauth_acl_free(nvap->nva_acl);
nvap->nva_acl = NULL;
}
}
FSDBG_BOT(513, np->n_size, error, np->n_vattr.nva_size, np->n_flag);
return (error);
}
int
nfs3_vnop_getattr(
struct vnop_getattr_args *ap)
{
int error;
struct nfs_vattr nva;
struct vnode_attr *vap = ap->a_vap;
dev_t rdev;
error = nfs_getattr(VTONFS(ap->a_vp), &nva, ap->a_context, NGA_CACHED);
if (error)
return (error);
VATTR_RETURN(vap, va_type, nva.nva_type);
VATTR_RETURN(vap, va_mode, nva.nva_mode);
rdev = makedev(nva.nva_rawdev.specdata1, nva.nva_rawdev.specdata2);
VATTR_RETURN(vap, va_rdev, rdev);
VATTR_RETURN(vap, va_uid, nva.nva_uid);
VATTR_RETURN(vap, va_gid, nva.nva_gid);
VATTR_RETURN(vap, va_nlink, nva.nva_nlink);
VATTR_RETURN(vap, va_fileid, nva.nva_fileid);
VATTR_RETURN(vap, va_data_size, nva.nva_size);
VATTR_RETURN(vap, va_data_alloc, nva.nva_bytes);
VATTR_RETURN(vap, va_iosize, nfs_iosize);
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);
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);
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);
return (error);
}
int
nfs_vnop_setattr(
struct vnop_setattr_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
struct vnode_attr *vap = ap->a_vap;
int error = 0;
int biosize, nfsvers, namedattrs;
u_quad_t origsize, vapsize;
struct nfs_dulookup dul;
nfsnode_t dnp = NULL;
vnode_t dvp = NULL;
const char *vname = NULL;
struct nfs_open_owner *noop = NULL;
struct nfs_open_file *nofp = NULL;
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
biosize = nmp->nm_biosize;
if (vnode_vfsisrdonly(vp))
return (EROFS);
origsize = np->n_size;
if (VATTR_IS_ACTIVE(vap, va_data_size)) {
switch (vnode_vtype(vp)) {
case VDIR:
return (EISDIR);
case VCHR:
case VBLK:
case VSOCK:
case VFIFO:
if (!VATTR_IS_ACTIVE(vap, va_modify_time) &&
!VATTR_IS_ACTIVE(vap, va_access_time) &&
!VATTR_IS_ACTIVE(vap, va_mode) &&
!VATTR_IS_ACTIVE(vap, va_uid) &&
!VATTR_IS_ACTIVE(vap, va_gid)) {
return (0);
}
VATTR_CLEAR_ACTIVE(vap, va_data_size);
break;
default:
if (vnode_vfsisrdonly(vp))
return (EROFS);
FSDBG_TOP(512, np->n_size, vap->va_data_size,
np->n_vattr.nva_size, np->n_flag);
if ((error = nfs_node_lock(np)))
return (error);
if (np->n_flag & NNEEDINVALIDATE)
np->n_flag &= ~NNEEDINVALIDATE;
nfs_node_unlock(np);
error = nfs_vinvalbuf(vp, (vap->va_data_size ? V_SAVE : 0) , ctx, 1);
if (error) {
NP(np, "nfs_setattr: nfs_vinvalbuf %d", error);
FSDBG_BOT(512, np->n_size, vap->va_data_size, np->n_vattr.nva_size, -1);
return (error);
}
if (nfsvers >= NFS_VER4) {
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_mount_state_in_use_start(nmp, vfs_context_thread(ctx));
if (error)
return (error);
if (np->n_flag & NREVOKE) {
nfs_mount_state_in_use_end(nmp, 0);
return (EIO);
}
error = nfs_open_file_find(np, noop, &nofp, 0, 0, 1);
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_LOST))
error = EIO;
if (!error && (nofp->nof_flags & NFS_OPEN_FILE_REOPEN)) {
nfs_mount_state_in_use_end(nmp, 0);
error = nfs4_reopen(nofp, vfs_context_thread(ctx));
nofp = NULL;
if (!error)
goto restart;
}
if (!error)
error = nfs_open_file_set_busy(nofp, vfs_context_thread(ctx));
if (error) {
nfs_open_owner_rele(noop);
return (error);
}
if (!(nofp->nof_access & NFS_OPEN_SHARE_ACCESS_WRITE)) {
error = nfs4_open(np, nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE, ctx);
if (!error)
nofp->nof_flags |= NFS_OPEN_FILE_SETATTR;
if (nfs_mount_state_error_should_restart(error)) {
nfs_open_file_clear_busy(nofp);
nofp = NULL;
if (nfs_mount_state_in_use_end(nmp, error))
goto restart;
}
}
}
nfs_data_lock(np, NFS_DATA_LOCK_EXCLUSIVE);
if (np->n_size > vap->va_data_size) {
daddr64_t obn, bn;
int neweofoff, mustwrite;
struct nfsbuf *bp;
obn = (np->n_size - 1) / biosize;
bn = vap->va_data_size / biosize;
for ( ; obn >= bn; obn--) {
if (!nfs_buf_is_incore(np, obn))
continue;
error = nfs_buf_get(np, obn, biosize, NULL, NBLK_READ, &bp);
if (error)
continue;
if (obn != bn) {
FSDBG(512, bp, bp->nb_flags, 0, obn);
SET(bp->nb_flags, NB_INVAL);
nfs_buf_release(bp, 1);
continue;
}
mustwrite = 0;
neweofoff = vap->va_data_size - NBOFF(bp);
if ((bp->nb_dirtyend > 0) && (bp->nb_dirtyoff < neweofoff)) {
if (bp->nb_dirtyend > neweofoff) {
bp->nb_dirtyend = neweofoff;
if (bp->nb_dirtyoff >= bp->nb_dirtyend)
bp->nb_dirtyoff = bp->nb_dirtyend = 0;
}
if ((bp->nb_dirtyend > 0) && (bp->nb_dirtyoff < neweofoff))
mustwrite++;
}
bp->nb_dirty &= (1 << round_page_32(neweofoff)/PAGE_SIZE) - 1;
if (bp->nb_dirty)
mustwrite++;
if (!mustwrite) {
FSDBG(512, bp, bp->nb_flags, 0, obn);
SET(bp->nb_flags, NB_INVAL);
nfs_buf_release(bp, 1);
continue;
}
CLR(bp->nb_flags, (NB_DONE | NB_ERROR | NB_INVAL | NB_ASYNC | NB_READ));
SET(bp->nb_flags, NB_STABLE | NB_NOCACHE);
if (!IS_VALID_CRED(bp->nb_wcred)) {
kauth_cred_t cred = vfs_context_ucred(ctx);
kauth_cred_ref(cred);
bp->nb_wcred = cred;
}
error = nfs_buf_write(bp);
if (error) {
FSDBG(512, bp, 0xd00dee, 0xbad, error);
nfs_node_lock_force(np);
np->n_error = error;
np->n_flag |= NWRITEERR;
NATTRINVALIDATE(np);
nfs_node_unlock(np);
nfs_data_unlock(np);
nfs_vinvalbuf(vp, V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
nfs_data_lock(np, NFS_DATA_LOCK_EXCLUSIVE);
error = 0;
}
}
}
if (vap->va_data_size != np->n_size)
ubc_setsize(vp, (off_t)vap->va_data_size);
origsize = np->n_size;
np->n_size = np->n_vattr.nva_size = vap->va_data_size;
nfs_node_lock_force(np);
CLR(np->n_flag, NUPDATESIZE);
nfs_node_unlock(np);
FSDBG(512, np, np->n_size, np->n_vattr.nva_size, 0xf00d0001);
}
} else if (VATTR_IS_ACTIVE(vap, va_modify_time) ||
VATTR_IS_ACTIVE(vap, va_access_time) ||
(vap->va_vaflags & VA_UTIMES_NULL)) {
if ((error = nfs_node_lock(np)))
return (error);
if ((np->n_flag & NMODIFIED) && (vnode_vtype(vp) == VREG)) {
nfs_node_unlock(np);
error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1);
if (error == EINTR)
return (error);
} else {
nfs_node_unlock(np);
}
}
if ((VATTR_IS_ACTIVE(vap, va_mode) || VATTR_IS_ACTIVE(vap, va_uid) || VATTR_IS_ACTIVE(vap, va_gid) ||
VATTR_IS_ACTIVE(vap, va_acl) || VATTR_IS_ACTIVE(vap, va_uuuid) || VATTR_IS_ACTIVE(vap, va_guuid)) &&
!(error = nfs_node_lock(np))) {
NACCESSINVALIDATE(np);
nfs_node_unlock(np);
if (!namedattrs) {
dvp = vnode_getparent(vp);
vname = vnode_getname(vp);
dnp = (dvp && vname) ? VTONFS(dvp) : NULL;
if (dnp) {
error = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
if (error) {
dnp = NULL;
error = 0;
}
}
if (dnp) {
nfs_dulookup_init(&dul, dnp, vname, strlen(vname), ctx);
nfs_dulookup_start(&dul, dnp, ctx);
}
}
}
if (!error)
error = nmp->nm_funcs->nf_setattr_rpc(np, vap, ctx);
if (VATTR_IS_ACTIVE(vap, va_mode) || VATTR_IS_ACTIVE(vap, va_uid) || VATTR_IS_ACTIVE(vap, va_gid) ||
VATTR_IS_ACTIVE(vap, va_acl) || VATTR_IS_ACTIVE(vap, va_uuuid) || VATTR_IS_ACTIVE(vap, va_guuid)) {
if (!namedattrs) {
if (dnp) {
nfs_dulookup_finish(&dul, dnp, ctx);
nfs_node_clear_busy(dnp);
}
if (dvp != NULLVP)
vnode_put(dvp);
if (vname != NULL)
vnode_putname(vname);
}
}
FSDBG_BOT(512, np->n_size, vap->va_data_size, np->n_vattr.nva_size, error);
if (VATTR_IS_ACTIVE(vap, va_data_size)) {
if (error && (origsize != np->n_size) &&
((nfsvers < NFS_VER4) || !nfs_mount_state_error_should_restart(error))) {
int err;
np->n_size = np->n_vattr.nva_size = origsize;
nfs_node_lock_force(np);
CLR(np->n_flag, NUPDATESIZE);
nfs_node_unlock(np);
FSDBG(512, np, np->n_size, np->n_vattr.nva_size, 0xf00d0002);
ubc_setsize(vp, (off_t)np->n_size);
vapsize = vap->va_data_size;
vap->va_data_size = origsize;
err = nmp->nm_funcs->nf_setattr_rpc(np, vap, ctx);
if (err)
NP(np, "nfs_vnop_setattr: nfs%d_setattr_rpc %d %d", nfsvers, error, err);
vap->va_data_size = vapsize;
}
nfs_node_lock_force(np);
if (ISSET(np->n_flag, NUPDATESIZE)) {
CLR(np->n_flag, NUPDATESIZE);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
nfs_getattr(np, NULL, ctx, NGA_UNCACHED);
} else {
nfs_node_unlock(np);
}
nfs_data_unlock(np);
if (nfsvers >= NFS_VER4) {
if (nofp) {
if (!nfs_mount_state_error_should_restart(error) &&
(nofp->nof_flags & NFS_OPEN_FILE_SETATTR)) {
int err = nfs_close(np, nofp, NFS_OPEN_SHARE_ACCESS_WRITE, NFS_OPEN_SHARE_DENY_NONE, ctx);
if (err)
NP(np, "nfs_vnop_setattr: close error: %d", err);
nofp->nof_flags &= ~NFS_OPEN_FILE_SETATTR;
}
nfs_open_file_clear_busy(nofp);
nofp = NULL;
}
if (nfs_mount_state_in_use_end(nmp, error))
goto restart;
nfs_open_owner_rele(noop);
}
}
return (error);
}
int
nfs3_setattr_rpc(
nfsnode_t np,
struct vnode_attr *vap,
vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(np);
int error = 0, lockerror = ENOENT, status, wccpostattr = 0, nfsvers;
u_int64_t xid, nextxid;
struct nfsm_chain nmreq, nmrep;
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
VATTR_SET_SUPPORTED(vap, va_mode);
VATTR_SET_SUPPORTED(vap, va_uid);
VATTR_SET_SUPPORTED(vap, va_gid);
VATTR_SET_SUPPORTED(vap, va_data_size);
VATTR_SET_SUPPORTED(vap, va_access_time);
VATTR_SET_SUPPORTED(vap, va_modify_time);
if (VATTR_IS_ACTIVE(vap, va_flags)) {
if (vap->va_flags) {
if (vap->va_active & ~VNODE_ATTR_va_flags)
return (EINVAL);
else
return (ENOTSUP);
}
if (!(vap->va_active & ~VNODE_ATTR_va_flags))
return (0);
}
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_SATTR(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
if (nfsvers == NFS_VER3) {
if (VATTR_IS_ACTIVE(vap, va_mode)) {
nfsm_chain_add_32(error, &nmreq, TRUE);
nfsm_chain_add_32(error, &nmreq, vap->va_mode);
} else {
nfsm_chain_add_32(error, &nmreq, FALSE);
}
if (VATTR_IS_ACTIVE(vap, va_uid)) {
nfsm_chain_add_32(error, &nmreq, TRUE);
nfsm_chain_add_32(error, &nmreq, vap->va_uid);
} else {
nfsm_chain_add_32(error, &nmreq, FALSE);
}
if (VATTR_IS_ACTIVE(vap, va_gid)) {
nfsm_chain_add_32(error, &nmreq, TRUE);
nfsm_chain_add_32(error, &nmreq, vap->va_gid);
} else {
nfsm_chain_add_32(error, &nmreq, FALSE);
}
if (VATTR_IS_ACTIVE(vap, va_data_size)) {
nfsm_chain_add_32(error, &nmreq, TRUE);
nfsm_chain_add_64(error, &nmreq, vap->va_data_size);
} else {
nfsm_chain_add_32(error, &nmreq, FALSE);
}
if (vap->va_vaflags & VA_UTIMES_NULL) {
nfsm_chain_add_32(error, &nmreq, NFS_TIME_SET_TO_SERVER);
nfsm_chain_add_32(error, &nmreq, NFS_TIME_SET_TO_SERVER);
} else {
if (VATTR_IS_ACTIVE(vap, va_access_time)) {
nfsm_chain_add_32(error, &nmreq, NFS_TIME_SET_TO_CLIENT);
nfsm_chain_add_32(error, &nmreq, vap->va_access_time.tv_sec);
nfsm_chain_add_32(error, &nmreq, vap->va_access_time.tv_nsec);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_TIME_DONT_CHANGE);
}
if (VATTR_IS_ACTIVE(vap, va_modify_time)) {
nfsm_chain_add_32(error, &nmreq, NFS_TIME_SET_TO_CLIENT);
nfsm_chain_add_32(error, &nmreq, vap->va_modify_time.tv_sec);
nfsm_chain_add_32(error, &nmreq, vap->va_modify_time.tv_nsec);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_TIME_DONT_CHANGE);
}
}
nfsm_chain_add_32(error, &nmreq, FALSE);
} else {
nfsm_chain_add_32(error, &nmreq, VATTR_IS_ACTIVE(vap, va_mode) ?
vtonfsv2_mode(vnode_vtype(NFSTOV(np)), vap->va_mode) : -1);
nfsm_chain_add_32(error, &nmreq, VATTR_IS_ACTIVE(vap, va_uid) ?
vap->va_uid : (uint32_t)-1);
nfsm_chain_add_32(error, &nmreq, VATTR_IS_ACTIVE(vap, va_gid) ?
vap->va_gid : (uint32_t)-1);
nfsm_chain_add_32(error, &nmreq, VATTR_IS_ACTIVE(vap, va_data_size) ?
vap->va_data_size : (uint32_t)-1);
if (VATTR_IS_ACTIVE(vap, va_access_time)) {
nfsm_chain_add_32(error, &nmreq, vap->va_access_time.tv_sec);
nfsm_chain_add_32(error, &nmreq, (vap->va_access_time.tv_nsec != -1) ?
((uint32_t)vap->va_access_time.tv_nsec / 1000) : 0xffffffff);
} else {
nfsm_chain_add_32(error, &nmreq, -1);
nfsm_chain_add_32(error, &nmreq, -1);
}
if (VATTR_IS_ACTIVE(vap, va_modify_time)) {
nfsm_chain_add_32(error, &nmreq, vap->va_modify_time.tv_sec);
nfsm_chain_add_32(error, &nmreq, (vap->va_modify_time.tv_nsec != -1) ?
((uint32_t)vap->va_modify_time.tv_nsec / 1000) : 0xffffffff);
} else {
nfsm_chain_add_32(error, &nmreq, -1);
nfsm_chain_add_32(error, &nmreq, -1);
}
}
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC_SETATTR, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
if (nfsvers == NFS_VER3) {
struct timespec premtime = { 0, 0 };
nfsm_chain_get_wcc_data(error, &nmrep, np, &premtime, &wccpostattr, &xid);
nfsmout_if(error);
if (nfstimespeccmp(&np->n_mtime, &premtime, ==))
NFS_CHANGED_UPDATE(nfsvers, np, &np->n_vattr);
if ((vnode_vtype(NFSTOV(np)) == VDIR) &&
nfstimespeccmp(&np->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, np, &np->n_vattr);
if (!wccpostattr)
NATTRINVALIDATE(np);
error = status;
} else {
if (!error)
error = status;
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
}
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);
return (error);
}
int
nfs_vnop_lookup(
struct vnop_lookup_args *ap)
{
vfs_context_t ctx = ap->a_context;
struct componentname *cnp = ap->a_cnp;
vnode_t dvp = ap->a_dvp;
vnode_t *vpp = ap->a_vpp;
int flags = cnp->cn_flags;
vnode_t newvp;
nfsnode_t dnp, np;
struct nfsmount *nmp;
mount_t mp;
int nfsvers, error, busyerror = ENOENT, isdot, isdotdot, negnamecache;
u_int64_t xid;
struct nfs_vattr nvattr;
int ngflags;
struct vnop_access_args naa;
fhandle_t fh;
struct nfsreq rq, *req = &rq;
*vpp = NULLVP;
dnp = VTONFS(dvp);
NVATTR_INIT(&nvattr);
mp = vnode_mount(dvp);
nmp = VFSTONFS(mp);
if (!nmp) {
error = ENXIO;
goto error_return;
}
nfsvers = nmp->nm_vers;
negnamecache = !NMFLAG(nmp, NONEGNAMECACHE);
if ((error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx))))
goto error_return;
if ((error = nfs_getattr(dnp, NULL, ctx, NGA_CACHED)))
goto error_return;
error = cache_lookup(dvp, vpp, cnp);
switch (error) {
case ENOENT:
goto error_return;
case 0:
if ((nfsvers > NFS_VER2) && NMFLAG(nmp, RDIRPLUS)) {
error = nfs_dir_buf_cache_lookup(dnp, &np, cnp, ctx, 0);
if (!error && np) {
*vpp = NFSTOV(np);
error = -1;
}
}
if (error != -1)
break;
case -1:
OSAddAtomic64(1, &nfsstats.lookupcache_hits);
nfs_node_clear_busy(dnp);
busyerror = ENOENT;
naa.a_desc = &vnop_access_desc;
naa.a_vp = dvp;
naa.a_action = KAUTH_VNODE_SEARCH;
naa.a_context = ctx;
error = nfs_vnop_access(&naa);
default:
goto error_return;
}
isdot = isdotdot = 0;
if (cnp->cn_nameptr[0] == '.') {
if (cnp->cn_namelen == 1)
isdot = 1;
if ((cnp->cn_namelen == 2) && (cnp->cn_nameptr[1] == '.'))
isdotdot = 1;
}
if (isdotdot || isdot) {
fh.fh_len = 0;
goto found;
}
if ((nfsvers >= NFS_VER4) && (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER)) {
error = ENOENT;
goto error_return;
}
nmp = VTONMP(dvp);
if (!nmp) {
error = ENXIO;
goto error_return;
}
if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXNAME) &&
(cnp->cn_namelen > (int)nmp->nm_fsattr.nfsa_maxname)) {
error = ENAMETOOLONG;
goto error_return;
}
error = 0;
newvp = NULLVP;
OSAddAtomic64(1, &nfsstats.lookupcache_misses);
error = nmp->nm_funcs->nf_lookup_rpc_async(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &req);
nfsmout_if(error);
error = nmp->nm_funcs->nf_lookup_rpc_async_finish(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, req, &xid, &fh, &nvattr);
nfsmout_if(error);
isdot = NFS_CMPFH(dnp, fh.fh_data, fh.fh_len);
found:
if (flags & ISLASTCN) {
switch (cnp->cn_nameiop) {
case DELETE:
cnp->cn_flags &= ~MAKEENTRY;
break;
case RENAME:
cnp->cn_flags &= ~MAKEENTRY;
if (isdot) {
error = EISDIR;
goto error_return;
}
break;
}
}
if (isdotdot) {
newvp = vnode_getparent(dvp);
if (!newvp) {
error = ENOENT;
goto error_return;
}
} else if (isdot) {
error = vnode_get(dvp);
if (error)
goto error_return;
newvp = dvp;
nfs_node_lock_force(dnp);
if (fh.fh_len && (dnp->n_xid <= xid))
nfs_loadattrcache(dnp, &nvattr, &xid, 0);
nfs_node_unlock(dnp);
} else {
ngflags = (cnp->cn_flags & MAKEENTRY) ? NG_MAKEENTRY : 0;
error = nfs_nget(mp, dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, ngflags, &np);
if (error)
goto error_return;
newvp = NFSTOV(np);
nfs_node_unlock(np);
}
*vpp = newvp;
nfsmout:
if (error) {
if (((cnp->cn_nameiop == CREATE) || (cnp->cn_nameiop == RENAME)) &&
(flags & ISLASTCN) && (error == ENOENT)) {
if (vnode_mount(dvp) && vnode_vfsisrdonly(dvp))
error = EROFS;
else
error = EJUSTRETURN;
}
}
if ((error == ENOENT) && (cnp->cn_flags & MAKEENTRY) &&
(cnp->cn_nameiop != CREATE) && negnamecache) {
nfs_node_lock_force(dnp);
cache_enter(dvp, NULL, cnp);
dnp->n_flag |= NNEGNCENTRIES;
nfs_node_unlock(dnp);
}
error_return:
NVATTR_CLEANUP(&nvattr);
if (!busyerror)
nfs_node_clear_busy(dnp);
if (error && *vpp) {
vnode_put(*vpp);
*vpp = NULLVP;
}
return (error);
}
int
nfs_vnop_readlink(
struct vnop_readlink_args *ap)
{
vfs_context_t ctx = ap->a_context;
nfsnode_t np = VTONFS(ap->a_vp);
struct nfsmount *nmp;
int error = 0, nfsvers;
uint32_t buflen;
uio_t uio = ap->a_uio;
struct nfsbuf *bp = NULL;
if (vnode_vtype(ap->a_vp) != VLNK)
return (EPERM);
if (uio_resid(uio) == 0)
return (0);
if (uio_offset(uio) < 0)
return (EINVAL);
nmp = VTONMP(ap->a_vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((error = nfs_getattr(np, NULL, ctx, NGA_CACHED))) {
FSDBG(531, np, 0xd1e0001, 0, error);
return (error);
}
OSAddAtomic64(1, &nfsstats.biocache_readlinks);
error = nfs_buf_get(np, 0, NFS_MAXPATHLEN, vfs_context_thread(ctx), NBLK_READ, &bp);
if (error) {
FSDBG(531, np, 0xd1e0002, 0, error);
return (error);
}
if (!ISSET(bp->nb_flags, NB_CACHE)) {
OSAddAtomic64(1, &nfsstats.readlink_bios);
buflen = bp->nb_bufsize;
error = nmp->nm_funcs->nf_readlink_rpc(np, bp->nb_data, &buflen, ctx);
if (error) {
SET(bp->nb_flags, NB_ERROR);
bp->nb_error = error;
} else {
bp->nb_validoff = 0;
bp->nb_validend = buflen;
}
}
if (!error && (bp->nb_validend > 0))
error = uiomove(bp->nb_data, bp->nb_validend, uio);
FSDBG(531, np, bp->nb_validend, 0, error);
nfs_buf_release(bp, 1);
return (error);
}
int
nfs3_readlink_rpc(nfsnode_t np, char *buf, uint32_t *buflenp, vfs_context_t ctx)
{
struct nfsmount *nmp;
int error = 0, lockerror = ENOENT, nfsvers, status;
uint32_t len;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
nmp = NFSTONMP(np);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC_READLINK, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
if (nfsvers == NFS_VER3)
nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
if (!error)
error = status;
nfsm_chain_get_32(error, &nmrep, len);
nfsmout_if(error);
if ((nfsvers == NFS_VER2) && (len > *buflenp)) {
error = EBADRPC;
goto nfsmout;
}
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
nfs_read_rpc(nfsnode_t np, uio_t uio, vfs_context_t ctx)
{
struct nfsmount *nmp;
int error = 0, nfsvers, eof = 0;
size_t nmrsize, len, retlen;
user_ssize_t tsiz;
off_t txoffset;
struct nfsreq rq, *req = &rq;
uint32_t stategenid = 0, restart = 0;
FSDBG_TOP(536, np, uio_offset(uio), uio_resid(uio), 0);
nmp = NFSTONMP(np);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nmrsize = nmp->nm_rsize;
txoffset = uio_offset(uio);
tsiz = uio_resid(uio);
if ((nfsvers == NFS_VER2) && ((uint64_t)(txoffset + tsiz) > 0xffffffffULL)) {
FSDBG_BOT(536, np, uio_offset(uio), uio_resid(uio), EFBIG);
return (EFBIG);
}
while (tsiz > 0) {
len = retlen = (tsiz > (user_ssize_t)nmrsize) ? nmrsize : (size_t)tsiz;
FSDBG(536, np, txoffset, len, 0);
if (np->n_flag & NREVOKE) {
error = EIO;
break;
}
if (nmp->nm_vers >= NFS_VER4)
stategenid = nmp->nm_stategenid;
error = nmp->nm_funcs->nf_read_rpc_async(np, txoffset, len,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, &req);
if (!error)
error = nmp->nm_funcs->nf_read_rpc_async_finish(np, req, uio, &retlen, &eof);
if ((nmp->nm_vers >= NFS_VER4) && nfs_mount_state_error_should_restart(error) &&
(++restart <= nfs_mount_state_max_restarts(nmp))) {
lck_mtx_lock(&nmp->nm_lock);
if ((error != NFSERR_GRACE) && (stategenid == nmp->nm_stategenid)) {
NP(np, "nfs_read_rpc: error %d, initiating recovery", error);
nfs_need_recover(nmp, error);
}
lck_mtx_unlock(&nmp->nm_lock);
if (np->n_flag & NREVOKE) {
error = EIO;
} else {
if (error == NFSERR_GRACE)
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
if (!(error = nfs_mount_state_wait_for_recovery(nmp)))
continue;
}
}
if (error)
break;
txoffset += retlen;
tsiz -= retlen;
if (nfsvers != NFS_VER2) {
if (eof || (retlen == 0))
tsiz = 0;
} else if (retlen < len)
tsiz = 0;
}
FSDBG_BOT(536, np, eof, uio_resid(uio), error);
return (error);
}
int
nfs3_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;
struct nfsm_chain nmreq;
nmp = NFSTONMP(np);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmreq);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(nfsvers) + 3 * NFSX_UNSIGNED);
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
if (nfsvers == NFS_VER3) {
nfsm_chain_add_64(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, len);
} else {
nfsm_chain_add_32(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, len);
nfsm_chain_add_32(error, &nmreq, 0);
}
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(np, NULL, &nmreq, NFSPROC_READ, thd, cred, NULL, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs3_read_rpc_async_finish(
nfsnode_t np,
struct nfsreq *req,
uio_t uio,
size_t *lenp,
int *eofp)
{
int error = 0, lockerror, nfsvers, status, eof = 0;
size_t retlen = 0;
uint64_t xid;
struct nfsmount *nmp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
if (!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;
if (nfsvers == NFS_VER3)
nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
if (!error)
error = status;
if (nfsvers == NFS_VER3) {
nfsm_chain_adv(error, &nmrep, NFSX_UNSIGNED);
nfsm_chain_get_32(error, &nmrep, eof);
} else {
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
}
if (!lockerror)
nfs_node_unlock(np);
nfsm_chain_get_32(error, &nmrep, retlen);
if ((nfsvers == NFS_VER2) && (retlen > *lenp))
error = EBADRPC;
nfsmout_if(error);
error = nfsm_chain_get_uio(&nmrep, MIN(retlen, *lenp), uio);
if (eofp) {
if (nfsvers == NFS_VER3) {
if (!eof && !retlen)
eof = 1;
} else if (retlen < *lenp) {
eof = 1;
}
*eofp = eof;
}
*lenp = MIN(retlen, *lenp);
nfsmout:
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_vnop_write(
struct vnop_write_args *ap)
{
vfs_context_t ctx = ap->a_context;
uio_t uio = ap->a_uio;
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
int ioflag = ap->a_ioflag;
struct nfsbuf *bp;
struct nfsmount *nmp = VTONMP(vp);
daddr64_t lbn;
int biosize;
int n, on, error = 0;
off_t boff, start, end;
uio_t auio;
char auio_buf [ UIO_SIZEOF(1) ];
thread_t thd;
kauth_cred_t cred;
FSDBG_TOP(515, np, uio_offset(uio), uio_resid(uio), ioflag);
if (vnode_vtype(vp) != VREG) {
FSDBG_BOT(515, np, uio_offset(uio), uio_resid(uio), EIO);
return (EIO);
}
thd = vfs_context_thread(ctx);
cred = vfs_context_ucred(ctx);
nfs_data_lock(np, NFS_DATA_LOCK_SHARED);
if ((error = nfs_node_lock(np))) {
nfs_data_unlock(np);
FSDBG_BOT(515, np, uio_offset(uio), uio_resid(uio), error);
return (error);
}
np->n_wrbusy++;
if (np->n_flag & NWRITEERR) {
error = np->n_error;
np->n_flag &= ~NWRITEERR;
}
if (np->n_flag & NNEEDINVALIDATE) {
np->n_flag &= ~NNEEDINVALIDATE;
nfs_node_unlock(np);
nfs_data_unlock(np);
nfs_vinvalbuf(vp, V_SAVE|V_IGNORE_WRITEERR, ctx, 1);
nfs_data_lock(np, NFS_DATA_LOCK_SHARED);
} else {
nfs_node_unlock(np);
}
if (error)
goto out;
biosize = nmp->nm_biosize;
if (ioflag & (IO_APPEND | IO_SYNC)) {
nfs_node_lock_force(np);
if (np->n_flag & NMODIFIED) {
NATTRINVALIDATE(np);
nfs_node_unlock(np);
nfs_data_unlock(np);
error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1);
nfs_data_lock(np, NFS_DATA_LOCK_SHARED);
if (error) {
FSDBG(515, np, uio_offset(uio), 0x10bad01, error);
goto out;
}
} else {
nfs_node_unlock(np);
}
if (ioflag & IO_APPEND) {
nfs_data_unlock(np);
error = nfs_getattr(np, NULL, ctx, NGA_UNCACHED);
nfs_data_lock(np, NFS_DATA_LOCK_EXCLUSIVE);
if (error) {
FSDBG(515, np, uio_offset(uio), 0x10bad02, error);
goto out;
}
uio_setoffset(uio, np->n_size);
}
}
if (uio_offset(uio) < 0) {
error = EINVAL;
FSDBG_BOT(515, np, uio_offset(uio), 0xbad0ff, error);
goto out;
}
if (uio_resid(uio) == 0)
goto out;
if (((uio_offset(uio) + uio_resid(uio)) > (off_t)np->n_size) && !(ioflag & IO_APPEND)) {
nfs_data_unlock(np);
nfs_data_lock(np, NFS_DATA_LOCK_EXCLUSIVE);
}
do {
OSAddAtomic64(1, &nfsstats.biocache_writes);
lbn = uio_offset(uio) / biosize;
on = uio_offset(uio) % biosize;
n = biosize - on;
if (uio_resid(uio) < n)
n = uio_resid(uio);
again:
error = nfs_buf_get(np, lbn, biosize, thd, NBLK_WRITE, &bp);
if (error)
goto out;
NFS_BUF_MAP(bp);
if (ioflag & IO_NOCACHE)
SET(bp->nb_flags, NB_NOCACHE);
if (!IS_VALID_CRED(bp->nb_wcred)) {
kauth_cred_ref(cred);
bp->nb_wcred = cred;
}
if (bp->nb_dirtyend > 0) {
if (on > bp->nb_dirtyend || (on + n) < bp->nb_dirtyoff || bp->nb_dirty) {
FSDBG(515, np, uio_offset(uio), bp, 0xd15c001);
CLR(bp->nb_flags, (NB_DONE | NB_ERROR | NB_INVAL));
SET(bp->nb_flags, (NB_ASYNC | NB_STABLE));
error = nfs_buf_write(bp);
if (error)
goto out;
goto again;
}
} else if (bp->nb_dirty) {
int firstpg, lastpg;
u_int32_t pagemask;
firstpg = on/PAGE_SIZE;
lastpg = (on+n-1)/PAGE_SIZE;
pagemask = ((1 << (lastpg+1)) - 1) & ~((1 << firstpg) - 1);
if (bp->nb_dirty & ~pagemask) {
FSDBG(515, np, uio_offset(uio), bp, 0xd15c002);
CLR(bp->nb_flags, (NB_DONE | NB_ERROR | NB_INVAL));
SET(bp->nb_flags, (NB_ASYNC | NB_STABLE));
error = nfs_buf_write(bp);
if (error)
goto out;
goto again;
}
if (NBPGDIRTY(bp,firstpg) || NBPGDIRTY(bp,lastpg)) {
FSDBG(515, np, uio_offset(uio), bp, 0xd15c003);
bp->nb_dirtyoff = min(on, firstpg * PAGE_SIZE);
if (NBPGDIRTY(bp,lastpg)) {
bp->nb_dirtyend = (lastpg+1) * PAGE_SIZE;
if (NBOFF(bp) + bp->nb_dirtyend > (off_t)np->n_size) {
bp->nb_dirtyend = np->n_size - NBOFF(bp);
if (bp->nb_dirtyoff >= bp->nb_dirtyend)
bp->nb_dirtyoff = bp->nb_dirtyend = 0;
}
} else
bp->nb_dirtyend = on+n;
}
}
if ((uio_offset(uio) + n) > (off_t)np->n_size) {
struct nfsbuf *eofbp = NULL;
daddr64_t eofbn = np->n_size / biosize;
int eofoff = np->n_size % biosize;
int neweofoff = (uio_offset(uio) + n) % biosize;
FSDBG(515, 0xb1ffa000, uio_offset(uio) + n, eofoff, neweofoff);
if (eofoff && (eofbn < lbn) &&
((error = nfs_buf_get(np, eofbn, biosize, thd, NBLK_WRITE|NBLK_ONLYVALID, &eofbp))))
goto out;
if ((lbn == eofbn) && ISSET(bp->nb_flags, NB_CACHE)) {
int endpg = ((neweofoff ? neweofoff : biosize) - 1)/PAGE_SIZE;
u_int32_t pagemask;
pagemask = (1 << (endpg+1)) - 1;
FSDBG(515, 0xb1ffa001, bp->nb_valid, pagemask, 0);
if ((bp->nb_valid & pagemask) != pagemask) {
if (on > bp->nb_validend) {
int i;
for (i=bp->nb_validend/PAGE_SIZE; i <= (on - 1)/PAGE_SIZE; i++)
NBPGVALID_SET(bp, i);
NFS_BUF_MAP(bp);
FSDBG(516, bp, bp->nb_validend, on - bp->nb_validend, 0xf01e);
bzero((char *)bp->nb_data + bp->nb_validend,
on - bp->nb_validend);
}
if (neweofoff) {
NFS_BUF_MAP(bp);
FSDBG(516, bp, neweofoff, PAGE_SIZE - (neweofoff & PAGE_MASK), 0xe0f);
bzero((char *)bp->nb_data + neweofoff,
PAGE_SIZE - (neweofoff & PAGE_MASK));
}
}
}
np->n_size = uio_offset(uio) + n;
nfs_node_lock_force(np);
CLR(np->n_flag, NUPDATESIZE);
np->n_flag |= NMODIFIED;
nfs_node_unlock(np);
FSDBG(516, np, np->n_size, np->n_vattr.nva_size, 0xf00d0001);
ubc_setsize(vp, (off_t)np->n_size);
if (eofbp) {
char *d;
int i;
if (ioflag & IO_NOCACHE)
SET(eofbp->nb_flags, NB_NOCACHE);
NFS_BUF_MAP(eofbp);
FSDBG(516, eofbp, eofoff, biosize - eofoff, 0xe0fff01e);
d = eofbp->nb_data;
i = eofoff/PAGE_SIZE;
while (eofoff < biosize) {
int poff = eofoff & PAGE_MASK;
if (!poff || NBPGVALID(eofbp,i)) {
bzero(d + eofoff, PAGE_SIZE - poff);
NBPGVALID_SET(eofbp, i);
}
if (bp->nb_validend == eofoff)
bp->nb_validend += PAGE_SIZE - poff;
eofoff += PAGE_SIZE - poff;
i++;
}
nfs_buf_release(eofbp, 1);
}
}
if (NBOFF(bp) + bp->nb_dirtyend > (off_t)np->n_size) {
bp->nb_dirtyend = np->n_size - NBOFF(bp);
if (bp->nb_dirtyoff >= bp->nb_dirtyend)
bp->nb_dirtyoff = bp->nb_dirtyend = 0;
}
if (!ISSET(bp->nb_flags, NB_CACHE) && (n < biosize)) {
int firstpg, lastpg, dirtypg;
int firstpgoff, lastpgoff;
start = end = -1;
firstpg = on/PAGE_SIZE;
firstpgoff = on & PAGE_MASK;
lastpg = (on+n-1)/PAGE_SIZE;
lastpgoff = (on+n) & PAGE_MASK;
if (firstpgoff && !NBPGVALID(bp,firstpg)) {
start = firstpg * PAGE_SIZE;
end = start + firstpgoff;
}
if (lastpgoff && !NBPGVALID(bp,lastpg)) {
if (start < 0)
start = (lastpg * PAGE_SIZE) + lastpgoff;
end = (lastpg + 1) * PAGE_SIZE;
}
if (ISSET(bp->nb_flags, NB_NOCACHE)) {
if (end > start)
SET(bp->nb_flags, NB_STABLE);
goto skipread;
}
if (end > start) {
for (dirtypg=start/PAGE_SIZE; dirtypg <= (end-1)/PAGE_SIZE; dirtypg++)
if (NBPGDIRTY(bp,dirtypg))
break;
if (!(start & PAGE_MASK)) {
for (; start > 0; start-=PAGE_SIZE)
if (NBPGVALID(bp,((start-1)/PAGE_SIZE)))
break;
}
NFS_BUF_MAP(bp);
boff = NBOFF(bp);
auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_READ,
&auio_buf, sizeof(auio_buf));
if (dirtypg <= (end-1)/PAGE_SIZE) {
uio_reset(auio, boff + start, UIO_SYSSPACE, UIO_READ);
uio_addiov(auio, CAST_USER_ADDR_T(bp->nb_data + start), on - start);
error = nfs_read_rpc(np, auio, ctx);
if (error) {
SET(bp->nb_flags, (NB_NOCACHE|NB_STABLE));
goto skipread;
}
if (uio_resid(auio) > 0) {
FSDBG(516, bp, (caddr_t)uio_curriovbase(auio) - bp->nb_data, uio_resid(auio), 0xd00dee01);
bzero(CAST_DOWN(caddr_t, uio_curriovbase(auio)), uio_resid(auio));
}
if (!error) {
if ((bp->nb_validoff < 0) || (bp->nb_validoff > start))
bp->nb_validoff = start;
if ((bp->nb_validend < 0) || (bp->nb_validend < on))
bp->nb_validend = on;
if ((off_t)np->n_size > boff + bp->nb_validend)
bp->nb_validend = min(np->n_size - (boff + start), biosize);
for (; start < on/PAGE_SIZE; start+=PAGE_SIZE)
NBPGVALID_SET(bp, start/PAGE_SIZE);
}
start = on+n;
}
if (!(end & PAGE_MASK)) {
for (; end < biosize; end+=PAGE_SIZE)
if (NBPGVALID(bp,end/PAGE_SIZE))
break;
}
if (((boff+start) >= (off_t)np->n_size) ||
((start >= on) && ((boff + on + n) >= (off_t)np->n_size))) {
FSDBG(516, bp, start, end - start, 0xd00dee00);
bzero(bp->nb_data + start, end - start);
error = 0;
} else {
uio_reset(auio, boff + start, UIO_SYSSPACE, UIO_READ);
uio_addiov(auio, CAST_USER_ADDR_T(bp->nb_data + start), end - start);
error = nfs_read_rpc(np, auio, ctx);
if (error) {
SET(bp->nb_flags, (NB_NOCACHE|NB_STABLE));
goto skipread;
}
if (uio_resid(auio) > 0) {
FSDBG(516, bp, (caddr_t)uio_curriovbase(auio) - bp->nb_data, uio_resid(auio), 0xd00dee02);
bzero(CAST_DOWN(caddr_t, uio_curriovbase(auio)), uio_resid(auio));
}
}
if (!error) {
if ((bp->nb_validoff < 0) || (bp->nb_validoff > start))
bp->nb_validoff = start;
if ((bp->nb_validend < 0) || (bp->nb_validend < end))
bp->nb_validend = end;
if ((off_t)np->n_size > boff + bp->nb_validend)
bp->nb_validend = min(np->n_size - (boff + start), biosize);
for (; start < (off_t)trunc_page_32(on); start+=PAGE_SIZE)
NBPGVALID_SET(bp, start/PAGE_SIZE);
for (; (end - 1) > (off_t)round_page_32(on+n-1); end-=PAGE_SIZE)
NBPGVALID_SET(bp, (end-1)/PAGE_SIZE);
}
}
}
skipread:
if (ISSET(bp->nb_flags, NB_ERROR)) {
error = bp->nb_error;
nfs_buf_release(bp, 1);
goto out;
}
nfs_node_lock_force(np);
np->n_flag |= NMODIFIED;
nfs_node_unlock(np);
NFS_BUF_MAP(bp);
error = uiomove((char *)bp->nb_data + on, n, uio);
if (error) {
SET(bp->nb_flags, NB_ERROR);
nfs_buf_release(bp, 1);
goto out;
}
start = on & ~PAGE_MASK;
for (; start < on+n; start += PAGE_SIZE) {
NBPGVALID_SET(bp, start/PAGE_SIZE);
}
if (bp->nb_dirtyend > 0) {
bp->nb_dirtyoff = min(on, bp->nb_dirtyoff);
bp->nb_dirtyend = max((on + n), bp->nb_dirtyend);
} else {
bp->nb_dirtyoff = on;
bp->nb_dirtyend = on + n;
}
if (bp->nb_validend <= 0 || bp->nb_validend < bp->nb_dirtyoff ||
bp->nb_validoff > bp->nb_dirtyend) {
bp->nb_validoff = bp->nb_dirtyoff;
bp->nb_validend = bp->nb_dirtyend;
} else {
bp->nb_validoff = min(bp->nb_validoff, bp->nb_dirtyoff);
bp->nb_validend = max(bp->nb_validend, bp->nb_dirtyend);
}
if (!ISSET(bp->nb_flags, NB_CACHE))
nfs_buf_normalize_valid_range(np, bp);
if (ISSET(bp->nb_flags, NB_NEEDCOMMIT)) {
nfs_node_lock_force(np);
if (ISSET(bp->nb_flags, NB_NEEDCOMMIT)) {
np->n_needcommitcnt--;
CHECK_NEEDCOMMITCNT(np);
}
CLR(bp->nb_flags, NB_NEEDCOMMIT);
nfs_node_unlock(np);
}
if (ioflag & IO_SYNC) {
error = nfs_buf_write(bp);
if (error)
goto out;
} else if (((n + on) == biosize) || (ioflag & IO_APPEND) ||
(ioflag & IO_NOCACHE) || ISSET(bp->nb_flags, NB_NOCACHE)) {
SET(bp->nb_flags, NB_ASYNC);
error = nfs_buf_write(bp);
if (error)
goto out;
} else {
if (!ISSET(bp->nb_flags, NB_DELWRI)) {
proc_t p = vfs_context_proc(ctx);
if (p && p->p_stats)
OSIncrementAtomicLong(&p->p_stats->p_ru.ru_oublock);
}
nfs_buf_write_delayed(bp);
}
if (np->n_needcommitcnt >= NFS_A_LOT_OF_NEEDCOMMITS)
nfs_flushcommits(np, 1);
} while (uio_resid(uio) > 0 && n > 0);
out:
nfs_node_lock_force(np);
np->n_wrbusy--;
nfs_node_unlock(np);
nfs_data_unlock(np);
FSDBG_BOT(515, np, uio_offset(uio), uio_resid(uio), error);
return (error);
}
int
nfs_write_rpc(
nfsnode_t np,
uio_t uio,
vfs_context_t ctx,
int *iomodep,
uint64_t *wverfp)
{
return nfs_write_rpc2(np, uio, vfs_context_thread(ctx), vfs_context_ucred(ctx), iomodep, wverfp);
}
int
nfs_write_rpc2(
nfsnode_t np,
uio_t uio,
thread_t thd,
kauth_cred_t cred,
int *iomodep,
uint64_t *wverfp)
{
struct nfsmount *nmp;
int error = 0, nfsvers;
int backup, wverfset, commit, committed;
uint64_t wverf = 0, wverf2;
size_t nmwsize, totalsize, tsiz, len, rlen;
struct nfsreq rq, *req = &rq;
uint32_t stategenid = 0, vrestart = 0, restart = 0;
#if DIAGNOSTIC
if (uio_iovcnt(uio) != 1)
panic("nfs3_write_rpc: iovcnt > 1");
#endif
FSDBG_TOP(537, np, uio_offset(uio), uio_resid(uio), *iomodep);
nmp = NFSTONMP(np);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nmwsize = nmp->nm_wsize;
wverfset = 0;
committed = NFS_WRITE_FILESYNC;
totalsize = tsiz = uio_resid(uio);
if ((nfsvers == NFS_VER2) && ((uint64_t)(uio_offset(uio) + tsiz) > 0xffffffffULL)) {
FSDBG_BOT(537, np, uio_offset(uio), uio_resid(uio), EFBIG);
return (EFBIG);
}
while (tsiz > 0) {
len = (tsiz > nmwsize) ? nmwsize : tsiz;
FSDBG(537, np, uio_offset(uio), len, 0);
if (np->n_flag & NREVOKE) {
error = EIO;
break;
}
if (nmp->nm_vers >= NFS_VER4)
stategenid = nmp->nm_stategenid;
error = nmp->nm_funcs->nf_write_rpc_async(np, uio, len, thd, cred, *iomodep, NULL, &req);
if (!error)
error = nmp->nm_funcs->nf_write_rpc_async_finish(np, req, &commit, &rlen, &wverf2);
nmp = NFSTONMP(np);
if (!nmp)
error = ENXIO;
if ((nmp->nm_vers >= NFS_VER4) && nfs_mount_state_error_should_restart(error) &&
(++restart <= nfs_mount_state_max_restarts(nmp))) {
lck_mtx_lock(&nmp->nm_lock);
if ((error != NFSERR_GRACE) && (stategenid == nmp->nm_stategenid)) {
NP(np, "nfs_write_rpc: error %d, initiating recovery", error);
nfs_need_recover(nmp, error);
}
lck_mtx_unlock(&nmp->nm_lock);
if (np->n_flag & NREVOKE) {
error = EIO;
} else {
if (error == NFSERR_GRACE)
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
if (!(error = nfs_mount_state_wait_for_recovery(nmp)))
continue;
}
}
if (error)
break;
if (nfsvers == NFS_VER2) {
tsiz -= len;
continue;
}
if (rlen < len) {
backup = len - rlen;
uio_pushback(uio, backup);
len = rlen;
}
if (commit < committed)
committed = commit;
tsiz -= len;
if (!wverfset) {
wverf = wverf2;
wverfset = 1;
} else if (wverf != wverf2) {
if (++vrestart > 100) {
error = EIO;
break;
}
backup = totalsize - tsiz;
uio_pushback(uio, backup);
committed = NFS_WRITE_FILESYNC;
wverfset = 0;
tsiz = totalsize;
}
}
if (wverfset && wverfp)
*wverfp = wverf;
*iomodep = committed;
if (error)
uio_setresid(uio, tsiz);
FSDBG_BOT(537, np, committed, uio_resid(uio), error);
return (error);
}
int
nfs3_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;
struct nfsm_chain nmreq;
nmp = NFSTONMP(np);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((iomode != NFS_WRITE_UNSTABLE) && nfs_allow_async &&
((mp = NFSTOMP(np))) && (vfs_flags(mp) & MNT_ASYNC))
iomode = NFS_WRITE_UNSTABLE;
nfsm_chain_null(&nmreq);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + 5 * NFSX_UNSIGNED + nfsm_rndup(len));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
if (nfsvers == NFS_VER3) {
nfsm_chain_add_64(error, &nmreq, uio_offset(uio));
nfsm_chain_add_32(error, &nmreq, len);
nfsm_chain_add_32(error, &nmreq, iomode);
} else {
nfsm_chain_add_32(error, &nmreq, 0);
nfsm_chain_add_32(error, &nmreq, uio_offset(uio));
nfsm_chain_add_32(error, &nmreq, 0);
}
nfsm_chain_add_32(error, &nmreq, len);
nfsmout_if(error);
error = nfsm_chain_add_uio(&nmreq, uio, len);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(np, NULL, &nmreq, NFSPROC_WRITE, thd, cred, NULL, 0, cb, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs3_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, status;
int updatemtime = 0, wccpostattr = 0, rlen, committed = NFS_WRITE_FILESYNC;
u_int64_t xid, wverf;
mount_t mp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(np);
if (!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 (!nmp)
error = ENXIO;
if (!error && (lockerror = nfs_node_lock(np)))
error = lockerror;
if (nfsvers == NFS_VER3) {
struct timespec premtime = { 0, 0 };
nfsm_chain_get_wcc_data(error, &nmrep, np, &premtime, &wccpostattr, &xid);
if (nfstimespeccmp(&np->n_mtime, &premtime, ==))
updatemtime = 1;
if (!error)
error = status;
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);
} else {
if (!error)
error = status;
nfsm_chain_loadattr(error, &nmrep, np, nfsvers, &xid);
nfsmout_if(error);
}
if (updatemtime)
NFS_CHANGED_UPDATE(nfsvers, np, &np->n_vattr);
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;
return (error);
}
int
nfs3_vnop_mknod(
struct vnop_mknod_args *ap)
{
vnode_t dvp = ap->a_dvp;
vnode_t *vpp = ap->a_vpp;
struct componentname *cnp = ap->a_cnp;
struct vnode_attr *vap = ap->a_vap;
vfs_context_t ctx = ap->a_context;
vnode_t newvp = NULL;
nfsnode_t np = NULL;
struct nfsmount *nmp;
nfsnode_t dnp = VTONFS(dvp);
struct nfs_vattr nvattr;
fhandle_t fh;
int error = 0, lockerror = ENOENT, busyerror = ENOENT, status, wccpostattr = 0;
struct timespec premtime = { 0, 0 };
u_int32_t rdev;
u_int64_t xid, dxid;
int nfsvers, gotuid, gotgid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq rq, *req = &rq;
nmp = VTONMP(dvp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if (!VATTR_IS_ACTIVE(vap, va_type))
return (EINVAL);
if (vap->va_type == VCHR || vap->va_type == VBLK) {
if (!VATTR_IS_ACTIVE(vap, va_rdev))
return (EINVAL);
rdev = vap->va_rdev;
} else if (vap->va_type == VFIFO || vap->va_type == VSOCK)
rdev = 0xffffffff;
else {
return (ENOTSUP);
}
if ((nfsvers == NFS_VER2) && (cnp->cn_namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
VATTR_SET_SUPPORTED(vap, va_mode);
VATTR_SET_SUPPORTED(vap, va_uid);
VATTR_SET_SUPPORTED(vap, va_gid);
VATTR_SET_SUPPORTED(vap, va_data_size);
VATTR_SET_SUPPORTED(vap, va_access_time);
VATTR_SET_SUPPORTED(vap, va_modify_time);
gotuid = VATTR_IS_ACTIVE(vap, va_uid);
gotgid = VATTR_IS_ACTIVE(vap, va_gid);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + 4 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
if (nfsvers == NFS_VER3) {
nfsm_chain_add_32(error, &nmreq, vtonfs_type(vap->va_type, nfsvers));
nfsm_chain_add_v3sattr(error, &nmreq, vap);
if (vap->va_type == VCHR || vap->va_type == VBLK) {
nfsm_chain_add_32(error, &nmreq, major(vap->va_rdev));
nfsm_chain_add_32(error, &nmreq, minor(vap->va_rdev));
}
} else {
nfsm_chain_add_v2sattr(error, &nmreq, vap, rdev);
}
nfsm_chain_build_done(error, &nmreq);
if (!error)
error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_MKNOD,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, &req);
if (!error)
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
dxid = xid;
if (!error && !status) {
if (dnp->n_flag & NNEGNCENTRIES) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(dvp);
}
error = nfsm_chain_get_fh_attr(&nmrep, dnp, ctx, nfsvers, &xid, &fh, &nvattr);
}
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &dxid);
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
nfs_node_unlock(dnp);
nfs_getattr(dnp, NULL, ctx, wccpostattr ? NGA_CACHED : NGA_UNCACHED);
}
if (!error && fh.fh_len)
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
if (!error && !np)
error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error && np)
newvp = NFSTOV(np);
if (!busyerror)
nfs_node_clear_busy(dnp);
if (!error && (gotuid || gotgid) &&
(!newvp || nfs_getattrcache(np, &nvattr, 0) ||
(gotuid && (nvattr.nva_uid != vap->va_uid)) ||
(gotgid && (nvattr.nva_gid != vap->va_gid)))) {
VATTR_CLEAR_SUPPORTED(vap, va_uid);
VATTR_CLEAR_SUPPORTED(vap, va_gid);
}
if (error) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
}
} else {
*vpp = newvp;
nfs_node_unlock(np);
}
return (error);
}
static uint32_t create_verf;
int
nfs3_vnop_create(
struct vnop_create_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t dvp = ap->a_dvp;
struct vnode_attr *vap = ap->a_vap;
struct componentname *cnp = ap->a_cnp;
struct nfs_vattr nvattr;
fhandle_t fh;
nfsnode_t np = NULL;
struct nfsmount *nmp;
nfsnode_t dnp = VTONFS(dvp);
vnode_t newvp = NULL;
int error = 0, lockerror = ENOENT, busyerror = ENOENT, status, wccpostattr = 0, fmode = 0;
struct timespec premtime = { 0, 0 };
int nfsvers, gotuid, gotgid;
u_int64_t xid, dxid;
uint32_t val;
struct nfsm_chain nmreq, nmrep;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
nmp = VTONMP(dvp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) && (cnp->cn_namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
VATTR_SET_SUPPORTED(vap, va_mode);
VATTR_SET_SUPPORTED(vap, va_uid);
VATTR_SET_SUPPORTED(vap, va_gid);
VATTR_SET_SUPPORTED(vap, va_data_size);
VATTR_SET_SUPPORTED(vap, va_access_time);
VATTR_SET_SUPPORTED(vap, va_modify_time);
gotuid = VATTR_IS_ACTIVE(vap, va_uid);
gotgid = VATTR_IS_ACTIVE(vap, va_gid);
if (vap->va_vaflags & VA_EXCLUSIVE) {
fmode |= O_EXCL;
if (!VATTR_IS_ACTIVE(vap, va_access_time) || !VATTR_IS_ACTIVE(vap, va_modify_time))
vap->va_vaflags |= VA_UTIMES_NULL;
}
again:
error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + 2 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
if (nfsvers == NFS_VER3) {
if (fmode & O_EXCL) {
nfsm_chain_add_32(error, &nmreq, NFS_CREATE_EXCLUSIVE);
lck_rw_lock_shared(in_ifaddr_rwlock);
if (!TAILQ_EMPTY(&in_ifaddrhead))
val = IA_SIN(in_ifaddrhead.tqh_first)->sin_addr.s_addr;
else
val = create_verf;
lck_rw_done(in_ifaddr_rwlock);
nfsm_chain_add_32(error, &nmreq, val);
++create_verf;
nfsm_chain_add_32(error, &nmreq, create_verf);
} else {
nfsm_chain_add_32(error, &nmreq, NFS_CREATE_UNCHECKED);
nfsm_chain_add_v3sattr(error, &nmreq, vap);
}
} else {
nfsm_chain_add_v2sattr(error, &nmreq, vap, 0);
}
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_CREATE,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, &req);
if (!error) {
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
dxid = xid;
if (!error && !status) {
if (dnp->n_flag & NNEGNCENTRIES) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(dvp);
}
error = nfsm_chain_get_fh_attr(&nmrep, dnp, ctx, nfsvers, &xid, &fh, &nvattr);
}
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &dxid);
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
nfs_node_unlock(dnp);
nfs_getattr(dnp, NULL, ctx, wccpostattr ? NGA_CACHED : NGA_UNCACHED);
}
if (!error && fh.fh_len)
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
if (!error && !np)
error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error && np)
newvp = NFSTOV(np);
nfs_dulookup_finish(&dul, dnp, ctx);
if (!busyerror)
nfs_node_clear_busy(dnp);
if (error) {
if ((nfsvers == NFS_VER3) && (fmode & O_EXCL) && (error == NFSERR_NOTSUPP)) {
fmode &= ~O_EXCL;
goto again;
}
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
}
} else if ((nfsvers == NFS_VER3) && (fmode & O_EXCL)) {
nfs_node_unlock(np);
error = nfs3_setattr_rpc(np, vap, ctx);
if (error && (gotuid || gotgid)) {
VATTR_CLEAR_ACTIVE(vap, va_uid);
VATTR_CLEAR_ACTIVE(vap, va_gid);
error = nfs3_setattr_rpc(np, vap, ctx);
}
if (error)
vnode_put(newvp);
else
nfs_node_lock_force(np);
}
if (!error)
*ap->a_vpp = newvp;
if (!error && (gotuid || gotgid) &&
(!newvp || nfs_getattrcache(np, &nvattr, 0) ||
(gotuid && (nvattr.nva_uid != vap->va_uid)) ||
(gotgid && (nvattr.nva_gid != vap->va_gid)))) {
VATTR_CLEAR_SUPPORTED(vap, va_uid);
VATTR_CLEAR_SUPPORTED(vap, va_gid);
}
if (!error)
nfs_node_unlock(np);
return (error);
}
int
nfs_vnop_remove(
struct vnop_remove_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;
nfsnode_t dnp = VTONFS(dvp);
nfsnode_t np = VTONFS(vp);
int error = 0, nfsvers, namedattrs, inuse, gotattr = 0, flushed = 0, setsize = 0;
struct nfs_vattr nvattr;
struct nfsmount *nmp;
struct nfs_dulookup dul;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
namedattrs = (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR);
again_relock:
error = nfs_node_set_busy2(dnp, np, vfs_context_thread(ctx));
if (error)
return (error);
lck_mtx_lock(nfs_node_hash_mutex);
while (np->n_hflag & NHLOCKED) {
np->n_hflag |= NHLOCKWANT;
msleep(np, nfs_node_hash_mutex, PINOD, "nfs_remove", NULL);
}
np->n_hflag |= NHLOCKED;
lck_mtx_unlock(nfs_node_hash_mutex);
if (!namedattrs)
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
again:
inuse = vnode_isinuse(vp, 0);
if ((ap->a_flags & VNODE_REMOVE_NODELETEBUSY) && inuse) {
error = EBUSY;
goto out;
}
if (inuse && !gotattr) {
if (nfs_getattr(np, &nvattr, ctx, NGA_CACHED))
nvattr.nva_nlink = 1;
gotattr = 1;
goto again;
}
if (!inuse || (np->n_sillyrename && (nvattr.nva_nlink > 1))) {
if (!inuse && !flushed) {
lck_mtx_lock(nfs_node_hash_mutex);
np->n_hflag &= ~NHLOCKED;
if (np->n_hflag & NHLOCKWANT) {
np->n_hflag &= ~NHLOCKWANT;
wakeup(np);
}
lck_mtx_unlock(nfs_node_hash_mutex);
nfs_node_clear_busy2(dnp, np);
error = nfs_vinvalbuf(vp, V_SAVE, ctx, 1);
FSDBG(260, np, np->n_size, np->n_vattr.nva_size, 0xf00d0011);
flushed = 1;
if (error == EINTR) {
nfs_node_lock_force(np);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
return (error);
}
if (!namedattrs)
nfs_dulookup_finish(&dul, dnp, ctx);
goto again_relock;
}
if ((nmp->nm_vers >= NFS_VER4) && (np->n_openflags & N_DELEG_MASK))
nfs4_delegation_return(np, 0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
nfs_name_cache_purge(dnp, np, cnp, ctx);
if (!namedattrs)
nfs_dulookup_start(&dul, dnp, ctx);
error = nmp->nm_funcs->nf_remove_rpc(dnp, cnp->cn_nameptr, cnp->cn_namelen,
vfs_context_thread(ctx), vfs_context_ucred(ctx));
if (error == ENOENT)
error = 0;
if (!error && !inuse && !np->n_sillyrename) {
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);
nfs_node_lock_force(np);
np->n_flag &= (NMODIFIED);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
vnode_recycle(vp);
setsize = 1;
} else {
nfs_node_lock_force(np);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
}
} else if (!np->n_sillyrename) {
if (!namedattrs)
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_sillyrename(dnp, np, cnp, ctx);
nfs_node_lock_force(np);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
} else {
nfs_node_lock_force(np);
NATTRINVALIDATE(np);
nfs_node_unlock(np);
if (!namedattrs)
nfs_dulookup_start(&dul, dnp, ctx);
}
nfs_getattr(dnp, NULL, ctx, NGA_CACHED);
if (!namedattrs)
nfs_dulookup_finish(&dul, dnp, ctx);
out:
lck_mtx_lock(nfs_node_hash_mutex);
np->n_hflag &= ~NHLOCKED;
if (np->n_hflag & NHLOCKWANT) {
np->n_hflag &= ~NHLOCKWANT;
wakeup(np);
}
lck_mtx_unlock(nfs_node_hash_mutex);
nfs_node_clear_busy2(dnp, np);
if (setsize)
ubc_setsize(vp, 0);
return (error);
}
int
nfs_removeit(struct nfs_sillyrename *nsp)
{
struct nfsmount *nmp = NFSTONMP(nsp->nsr_dnp);
if (!nmp)
return (ENXIO);
return nmp->nm_funcs->nf_remove_rpc(nsp->nsr_dnp, nsp->nsr_name, nsp->nsr_namlen, NULL, nsp->nsr_cred);
}
int
nfs3_remove_rpc(
nfsnode_t dnp,
char *name,
int namelen,
thread_t thd,
kauth_cred_t cred)
{
int error = 0, lockerror = ENOENT, status, wccpostattr = 0;
struct timespec premtime = { 0, 0 };
struct nfsmount *nmp;
int nfsvers;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) && (namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_UNSIGNED + nfsm_rndup(namelen));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request2(dnp, NULL, &nmreq, NFSPROC_REMOVE, thd, cred, NULL, 0, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &xid);
nfsmout_if(error);
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
if (!wccpostattr)
NATTRINVALIDATE(dnp);
if (!error)
error = status;
nfsmout:
if (!lockerror)
nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_vnop_rename(
struct vnop_rename_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t fdvp = ap->a_fdvp;
vnode_t fvp = ap->a_fvp;
vnode_t tdvp = ap->a_tdvp;
vnode_t tvp = ap->a_tvp;
nfsnode_t fdnp, fnp, tdnp, tnp;
struct componentname *tcnp = ap->a_tcnp;
struct componentname *fcnp = ap->a_fcnp;
int error, nfsvers, inuse=0, tvprecycle=0, locked=0;
mount_t fmp, tdmp, tmp;
struct nfs_vattr nvattr;
struct nfsmount *nmp;
fdnp = VTONFS(fdvp);
fnp = VTONFS(fvp);
tdnp = VTONFS(tdvp);
tnp = tvp ? VTONFS(tvp) : NULL;
nmp = NFSTONMP(fdnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
error = nfs_node_set_busy4(fdnp, fnp, tdnp, tnp, vfs_context_thread(ctx));
if (error)
return (error);
if (tvp && (tvp != fvp)) {
lck_mtx_lock(nfs_node_hash_mutex);
while (tnp->n_hflag & NHLOCKED) {
tnp->n_hflag |= NHLOCKWANT;
msleep(tnp, nfs_node_hash_mutex, PINOD, "nfs_rename", NULL);
}
tnp->n_hflag |= NHLOCKED;
lck_mtx_unlock(nfs_node_hash_mutex);
locked = 1;
}
fmp = vnode_mount(fvp);
tmp = tvp ? vnode_mount(tvp) : NULL;
tdmp = vnode_mount(tdvp);
if ((fmp != tdmp) || (tvp && (fmp != tmp))) {
error = EXDEV;
goto out;
}
if (tvp && (tvp != fvp))
inuse = vnode_isinuse(tvp, 0);
if (inuse && !tnp->n_sillyrename && (vnode_vtype(tvp) != VDIR)) {
error = nfs_sillyrename(tdnp, tnp, tcnp, ctx);
if (error) {
goto out;
} else {
tvp = NULL;
}
} else if (tvp && (nmp->nm_vers >= NFS_VER4) && (tnp->n_openflags & N_DELEG_MASK)) {
nfs4_delegation_return(tnp, 0, vfs_context_thread(ctx), vfs_context_ucred(ctx));
}
error = nmp->nm_funcs->nf_rename_rpc(fdnp, fcnp->cn_nameptr, fcnp->cn_namelen,
tdnp, tcnp->cn_nameptr, tcnp->cn_namelen, ctx);
if (error == ENOENT)
error = 0;
if (tvp && (tvp != fvp) && !tnp->n_sillyrename) {
nfs_node_lock_force(tnp);
tvprecycle = (!error && !vnode_isinuse(tvp, 0) &&
(nfs_getattrcache(tnp, &nvattr, 0) || (nvattr.nva_nlink == 1)));
nfs_node_unlock(tnp);
lck_mtx_lock(nfs_node_hash_mutex);
if (tvprecycle && (tnp->n_hflag & NHHASHED)) {
LIST_REMOVE(tnp, n_hash);
tnp->n_hflag &= ~NHHASHED;
FSDBG(266, 0, tnp, tnp->n_flag, 0xb1eb1e);
}
lck_mtx_unlock(nfs_node_hash_mutex);
}
nfs_name_cache_purge(fdnp, fnp, fcnp, ctx);
if (tvp) {
nfs_name_cache_purge(tdnp, tnp, tcnp, ctx);
if (tvprecycle) {
nfs_node_lock_force(tnp);
tnp->n_flag &= (NMODIFIED);
nfs_node_unlock(tnp);
vnode_recycle(tvp);
}
}
if (!error) {
nfs_node_lock_force(tdnp);
if (tdnp->n_flag & NNEGNCENTRIES) {
tdnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(tdvp);
}
nfs_node_unlock(tdnp);
nfs_node_lock_force(fnp);
cache_enter(tdvp, fvp, tcnp);
if (tdvp != fdvp) {
if (fnp->n_parent && !vnode_get(fnp->n_parent)) {
vnode_rele(fnp->n_parent);
vnode_put(fnp->n_parent);
}
fnp->n_parent = tdvp;
if (tdvp && !vnode_get(tdvp)) {
vnode_ref(tdvp);
vnode_put(tdvp);
} else {
fnp->n_parent = NULL;
}
}
nfs_node_unlock(fnp);
}
out:
nfs_getattr(fdnp, NULL, ctx, NGA_CACHED);
nfs_getattr(tdnp, NULL, ctx, NGA_CACHED);
if (locked) {
lck_mtx_lock(nfs_node_hash_mutex);
tnp->n_hflag &= ~NHLOCKED;
if (tnp->n_hflag & NHLOCKWANT) {
tnp->n_hflag &= ~NHLOCKWANT;
wakeup(tnp);
}
lck_mtx_unlock(nfs_node_hash_mutex);
}
nfs_node_clear_busy4(fdnp, fnp, tdnp, tnp);
return (error);
}
int
nfs3_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, fwccpostattr = 0, twccpostattr = 0;
struct timespec fpremtime = { 0, 0 }, tpremtime = { 0, 0 };
struct nfsmount *nmp;
int nfsvers;
u_int64_t xid, txid;
struct nfsm_chain nmreq, nmrep;
nmp = NFSTONMP(fdnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) &&
((fnamelen > NFS_MAXNAMLEN) || (tnamelen > NFS_MAXNAMLEN)))
return (ENAMETOOLONG);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
(NFSX_FH(nfsvers) + NFSX_UNSIGNED) * 2 +
nfsm_rndup(fnamelen) + nfsm_rndup(tnamelen));
nfsm_chain_add_fh(error, &nmreq, nfsvers, fdnp->n_fhp, fdnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, fnameptr, fnamelen, nmp);
nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, tnameptr, tnamelen, nmp);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(fdnp, NULL, &nmreq, NFSPROC_RENAME, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock2(fdnp, tdnp)))
error = lockerror;
if (nfsvers == NFS_VER3) {
txid = xid;
nfsm_chain_get_wcc_data(error, &nmrep, fdnp, &fpremtime, &fwccpostattr, &xid);
nfsm_chain_get_wcc_data(error, &nmrep, tdnp, &tpremtime, &twccpostattr, &txid);
}
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
fdnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&fdnp->n_ncmtime, &fpremtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, fdnp, &fdnp->n_vattr);
if (!fwccpostattr)
NATTRINVALIDATE(fdnp);
tdnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&tdnp->n_ncmtime, &tpremtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, tdnp, &tdnp->n_vattr);
if (!twccpostattr)
NATTRINVALIDATE(tdnp);
nfs_node_unlock2(fdnp, tdnp);
}
return (error);
}
int
nfs3_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, wccpostattr = 0, attrflag = 0;
struct timespec premtime = { 0, 0 };
struct nfsmount *nmp;
nfsnode_t np = VTONFS(vp);
nfsnode_t tdnp = VTONFS(tdvp);
int nfsvers;
u_int64_t xid, txid;
struct nfsm_chain nmreq, nmrep;
if (vnode_mount(vp) != vnode_mount(tdvp))
return (EXDEV);
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) && (cnp->cn_namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
nfs_flush(np, MNT_WAIT, vfs_context_thread(ctx), V_IGNORE_WRITEERR);
error = nfs_node_set_busy2(tdnp, np, vfs_context_thread(ctx));
if (error)
return (error);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers)*2 + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
nfsm_chain_add_fh(error, &nmreq, nfsvers, tdnp->n_fhp, tdnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC_LINK, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock2(tdnp, np))) {
error = lockerror;
goto nfsmout;
}
if (nfsvers == NFS_VER3) {
txid = xid;
nfsm_chain_postop_attr_update_flag(error, &nmrep, np, attrflag, &xid);
nfsm_chain_get_wcc_data(error, &nmrep, tdnp, &premtime, &wccpostattr, &txid);
}
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
if (!attrflag)
NATTRINVALIDATE(np);
tdnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&tdnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, tdnp, &tdnp->n_vattr);
if (!wccpostattr)
NATTRINVALIDATE(tdnp);
if (!error && (tdnp->n_flag & NNEGNCENTRIES)) {
tdnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(tdvp);
}
nfs_node_unlock2(tdnp, np);
}
nfs_node_clear_busy2(tdnp, np);
if (error == EEXIST)
error = 0;
return (error);
}
int
nfs3_vnop_symlink(
struct vnop_symlink_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t dvp = ap->a_dvp;
struct vnode_attr *vap = ap->a_vap;
struct componentname *cnp = ap->a_cnp;
struct nfs_vattr nvattr;
fhandle_t fh;
int slen, error = 0, lockerror = ENOENT, busyerror = ENOENT, status, wccpostattr = 0;
struct timespec premtime = { 0, 0 };
vnode_t newvp = NULL;
int nfsvers, gotuid, gotgid;
u_int64_t xid, dxid;
nfsnode_t np = NULL;
nfsnode_t dnp = VTONFS(dvp);
struct nfsmount *nmp;
struct nfsm_chain nmreq, nmrep;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
nmp = VTONMP(dvp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
slen = strlen(ap->a_target);
if ((nfsvers == NFS_VER2) &&
((cnp->cn_namelen > NFS_MAXNAMLEN) || (slen > NFS_MAXPATHLEN)))
return (ENAMETOOLONG);
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
VATTR_SET_SUPPORTED(vap, va_mode);
VATTR_SET_SUPPORTED(vap, va_uid);
VATTR_SET_SUPPORTED(vap, va_gid);
VATTR_SET_SUPPORTED(vap, va_data_size);
VATTR_SET_SUPPORTED(vap, va_access_time);
VATTR_SET_SUPPORTED(vap, va_modify_time);
gotuid = VATTR_IS_ACTIVE(vap, va_uid);
gotgid = VATTR_IS_ACTIVE(vap, va_gid);
error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + 2 * NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + nfsm_rndup(slen) + NFSX_SATTR(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
if (nfsvers == NFS_VER3)
nfsm_chain_add_v3sattr(error, &nmreq, vap);
nfsm_chain_add_name(error, &nmreq, ap->a_target, slen, nmp);
if (nfsvers == NFS_VER2)
nfsm_chain_add_v2sattr(error, &nmreq, vap, -1);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_SYMLINK,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, &req);
if (!error) {
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
dxid = xid;
if (!error && !status) {
if (dnp->n_flag & NNEGNCENTRIES) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(dvp);
}
if (nfsvers == NFS_VER3)
error = nfsm_chain_get_fh_attr(&nmrep, dnp, ctx, nfsvers, &xid, &fh, &nvattr);
else
fh.fh_len = 0;
}
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &dxid);
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
nfs_node_unlock(dnp);
nfs_getattr(dnp, NULL, ctx, wccpostattr ? NGA_CACHED : NGA_UNCACHED);
}
if (!error && fh.fh_len)
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
if (!error && np)
newvp = NFSTOV(np);
nfs_dulookup_finish(&dul, dnp, ctx);
if ((error == EEXIST) || (!error && !newvp)) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
newvp = NULL;
}
error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error) {
newvp = NFSTOV(np);
if (vnode_vtype(newvp) != VLNK)
error = EEXIST;
}
}
if (!busyerror)
nfs_node_clear_busy(dnp);
if (!error && (gotuid || gotgid) &&
(!newvp || nfs_getattrcache(np, &nvattr, 0) ||
(gotuid && (nvattr.nva_uid != vap->va_uid)) ||
(gotgid && (nvattr.nva_gid != vap->va_gid)))) {
VATTR_CLEAR_SUPPORTED(vap, va_uid);
VATTR_CLEAR_SUPPORTED(vap, va_gid);
}
if (error) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
}
} else {
nfs_node_unlock(np);
*ap->a_vpp = newvp;
}
return (error);
}
int
nfs3_vnop_mkdir(
struct vnop_mkdir_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t dvp = ap->a_dvp;
struct vnode_attr *vap = ap->a_vap;
struct componentname *cnp = ap->a_cnp;
struct nfs_vattr nvattr;
nfsnode_t np = NULL;
struct nfsmount *nmp;
nfsnode_t dnp = VTONFS(dvp);
vnode_t newvp = NULL;
int error = 0, lockerror = ENOENT, busyerror = ENOENT, status, wccpostattr = 0;
struct timespec premtime = { 0, 0 };
int nfsvers, gotuid, gotgid;
u_int64_t xid, dxid;
fhandle_t fh;
struct nfsm_chain nmreq, nmrep;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
nmp = VTONMP(dvp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) && (cnp->cn_namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
nfs_avoid_needless_id_setting_on_create(dnp, vap, ctx);
VATTR_SET_SUPPORTED(vap, va_mode);
VATTR_SET_SUPPORTED(vap, va_uid);
VATTR_SET_SUPPORTED(vap, va_gid);
VATTR_SET_SUPPORTED(vap, va_data_size);
VATTR_SET_SUPPORTED(vap, va_access_time);
VATTR_SET_SUPPORTED(vap, va_modify_time);
gotuid = VATTR_IS_ACTIVE(vap, va_uid);
gotgid = VATTR_IS_ACTIVE(vap, va_gid);
error = busyerror = nfs_node_set_busy(dnp, vfs_context_thread(ctx));
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_UNSIGNED +
nfsm_rndup(cnp->cn_namelen) + NFSX_SATTR(nfsvers));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
if (nfsvers == NFS_VER3)
nfsm_chain_add_v3sattr(error, &nmreq, vap);
else
nfsm_chain_add_v2sattr(error, &nmreq, vap, -1);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_MKDIR,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, &req);
if (!error) {
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
dxid = xid;
if (!error && !status) {
if (dnp->n_flag & NNEGNCENTRIES) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(dvp);
}
error = nfsm_chain_get_fh_attr(&nmrep, dnp, ctx, nfsvers, &xid, &fh, &nvattr);
}
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &dxid);
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
nfs_node_unlock(dnp);
nfs_getattr(dnp, NULL, ctx, wccpostattr ? NGA_CACHED : NGA_UNCACHED);
}
if (!error && fh.fh_len)
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len, &nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
if (!error && np)
newvp = NFSTOV(np);
nfs_dulookup_finish(&dul, dnp, ctx);
if ((error == EEXIST) || (!error && !newvp)) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
newvp = NULL;
}
error = nfs_lookitup(dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx, &np);
if (!error) {
newvp = NFSTOV(np);
if (vnode_vtype(newvp) != VDIR)
error = EEXIST;
}
}
if (!busyerror)
nfs_node_clear_busy(dnp);
if (!error && (gotuid || gotgid) &&
(!newvp || nfs_getattrcache(np, &nvattr, 0) ||
(gotuid && (nvattr.nva_uid != vap->va_uid)) ||
(gotgid && (nvattr.nva_gid != vap->va_gid)))) {
VATTR_CLEAR_SUPPORTED(vap, va_uid);
VATTR_CLEAR_SUPPORTED(vap, va_gid);
}
if (error) {
if (newvp) {
nfs_node_unlock(np);
vnode_put(newvp);
}
} else {
nfs_node_unlock(np);
*ap->a_vpp = newvp;
}
return (error);
}
int
nfs3_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;
int error = 0, lockerror = ENOENT, status, wccpostattr = 0;
struct timespec premtime = { 0, 0 };
struct nfsmount *nmp;
nfsnode_t np = VTONFS(vp);
nfsnode_t dnp = VTONFS(dvp);
int nfsvers;
u_int64_t xid;
struct nfsm_chain nmreq, nmrep;
struct nfsreq rq, *req = &rq;
struct nfs_dulookup dul;
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
if ((nfsvers == NFS_VER2) && (cnp->cn_namelen > NFS_MAXNAMLEN))
return (ENAMETOOLONG);
if ((error = nfs_node_set_busy2(dnp, np, vfs_context_thread(ctx))))
return (error);
nfs_dulookup_init(&dul, dnp, cnp->cn_nameptr, cnp->cn_namelen, ctx);
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_UNSIGNED + nfsm_rndup(cnp->cn_namelen));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, cnp->cn_nameptr, cnp->cn_namelen, nmp);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_RMDIR,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, &req);
if (!error) {
nfs_dulookup_start(&dul, dnp, ctx);
error = nfs_request_async_finish(req, &nmrep, &xid, &status);
}
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
if (nfsvers == NFS_VER3)
nfsm_chain_get_wcc_data(error, &nmrep, dnp, &premtime, &wccpostattr, &xid);
if (!error)
error = status;
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
if (!lockerror) {
dnp->n_flag |= NMODIFIED;
if (nfstimespeccmp(&dnp->n_ncmtime, &premtime, ==))
NFS_CHANGED_UPDATE_NC(nfsvers, dnp, &dnp->n_vattr);
nfs_node_unlock(dnp);
nfs_name_cache_purge(dnp, np, cnp, ctx);
nfs_getattr(dnp, NULL, ctx, wccpostattr ? NGA_CACHED : NGA_UNCACHED);
}
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);
}
int
nfs_vnop_readdir(
struct vnop_readdir_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t dvp = ap->a_vp;
nfsnode_t dnp = VTONFS(dvp);
struct nfsmount *nmp;
uio_t uio = ap->a_uio;
int error, nfsvers, extended, numdirent, bigcookies, ptc, done;
uint16_t i, iptc, rlen, nlen;
uint64_t cookie, nextcookie, lbn = 0;
struct nfsbuf *bp = NULL;
struct nfs_dir_buf_header *ndbhp;
struct direntry *dp, *dpptc;
struct dirent dent;
char *cp = NULL;
thread_t thd;
nmp = VTONMP(dvp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
bigcookies = (nmp->nm_state & NFSSTA_BIGCOOKIES);
extended = (ap->a_flags & VNODE_READDIR_EXTENDED);
if (vnode_vtype(dvp) != VDIR)
return (EPERM);
if (ap->a_eofflag)
*ap->a_eofflag = 0;
if (uio_resid(uio) == 0)
return (0);
if ((nfsvers >= NFS_VER4) && (dnp->n_vattr.nva_flags & NFS_FFLAG_TRIGGER)) {
return (0);
}
thd = vfs_context_thread(ctx);
numdirent = done = 0;
nextcookie = uio_offset(uio);
ptc = bigcookies && NFS_DIR_COOKIE_POTENTIALLY_TRUNCATED(nextcookie);
if ((error = nfs_node_lock(dnp)))
goto out;
if (dnp->n_flag & NNEEDINVALIDATE) {
dnp->n_flag &= ~NNEEDINVALIDATE;
nfs_invaldir(dnp);
nfs_node_unlock(dnp);
error = nfs_vinvalbuf(dvp, 0, ctx, 1);
if (!error)
error = nfs_node_lock(dnp);
if (error)
goto out;
}
if (!nextcookie) {
if (dnp->n_flag & NMODIFIED) {
nfs_invaldir(dnp);
nfs_node_unlock(dnp);
if ((error = nfs_vinvalbuf(dvp, 0, ctx, 1)))
goto out;
} else {
nfs_node_unlock(dnp);
}
if ((error = nfs_getattr(dnp, NULL, ctx, NGA_UNCACHED)))
goto out;
} else {
nfs_node_unlock(dnp);
}
error = nfs_dir_cookie_to_lbn(dnp, nextcookie, &ptc, &lbn);
if (error) {
if (error < 0) {
done = 1;
error = 0;
}
if (ap->a_eofflag)
*ap->a_eofflag = 1;
}
while (!error && !done) {
OSAddAtomic64(1, &nfsstats.biocache_readdirs);
cookie = nextcookie;
getbuffer:
error = nfs_buf_get(dnp, lbn, NFS_DIRBLKSIZ, thd, 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 = dnp->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(dnp)) {
nfs_invaldir(dnp);
nfs_node_unlock(dnp);
}
nfs_vinvalbuf(dvp, 0, ctx, 1);
if (error == NFSERR_BAD_COOKIE)
error = ENOENT;
}
if (error)
goto out;
}
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
i = 0;
if ((lbn != cookie) && !(ptc && NFS_DIR_COOKIE_SAME32(lbn, cookie))) {
dpptc = NULL;
iptc = 0;
for (; (i < ndbhp->ndbh_count) && (cookie != dp->d_seekoff); i++) {
if (ptc && !dpptc && NFS_DIR_COOKIE_SAME32(cookie, dp->d_seekoff)) {
iptc = i;
dpptc = dp;
}
nextcookie = dp->d_seekoff;
dp = NFS_DIRENTRY_NEXT(dp);
}
if ((i == ndbhp->ndbh_count) && dpptc) {
i = iptc;
dp = dpptc;
}
if (i < ndbhp->ndbh_count) {
nextcookie = dp->d_seekoff;
dp = NFS_DIRENTRY_NEXT(dp);
i++;
}
}
ptc = 0;
for (; i < ndbhp->ndbh_count; i++) {
if (extended) {
rlen = dp->d_reclen;
cp = (char*)dp;
} else {
if (!cp) {
cp = (char*)&dent;
bzero(cp, sizeof(dent));
}
if (dp->d_namlen > (sizeof(dent.d_name) - 1))
nlen = sizeof(dent.d_name) - 1;
else
nlen = dp->d_namlen;
rlen = NFS_DIRENT_LEN(nlen);
dent.d_reclen = rlen;
dent.d_ino = dp->d_ino;
dent.d_type = dp->d_type;
dent.d_namlen = nlen;
strlcpy(dent.d_name, dp->d_name, nlen + 1);
}
if (rlen > uio_resid(uio)) {
done = 1;
break;
}
if ((error = uiomove(cp, rlen, uio)))
break;
numdirent++;
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 (ap->a_eofflag)
*ap->a_eofflag = 1;
}
}
if (!error)
uio_setoffset(uio, nextcookie);
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);
}
if (!error)
nfs_dir_cookie_cache(dnp, nextcookie, lbn);
if (ap->a_numdirent)
*ap->a_numdirent = numdirent;
out:
return (error);
}
void
nfs_invaldir(nfsnode_t dnp)
{
if (vnode_vtype(NFSTOV(dnp)) != VDIR)
return;
dnp->n_eofcookie = 0;
dnp->n_cookieverf = 0;
if (!dnp->n_cookiecache)
return;
dnp->n_cookiecache->free = 0;
dnp->n_cookiecache->mru = -1;
memset(dnp->n_cookiecache->next, -1, NFSNUMCOOKIES);
}
uint32_t
nfs_dir_buf_freespace(struct nfsbuf *bp, int rdirplus)
{
struct nfs_dir_buf_header *ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
uint32_t space;
if (!ndbhp)
return (0);
space = bp->nb_bufsize - ndbhp->ndbh_entry_end;
if (rdirplus)
space -= ndbhp->ndbh_count * sizeof(struct nfs_vattr);
return (space);
}
void
nfs_dir_cookie_cache(nfsnode_t dnp, uint64_t cookie, uint64_t lbn)
{
struct nfsdmap *ndcc;
int8_t i, prev;
if (!cookie)
return;
if (nfs_node_lock(dnp))
return;
if (cookie == dnp->n_eofcookie) {
nfs_node_unlock(dnp);
return;
}
ndcc = dnp->n_cookiecache;
if (!ndcc) {
MALLOC_ZONE(dnp->n_cookiecache, struct nfsdmap *,
sizeof(struct nfsdmap), M_NFSDIROFF, M_WAITOK);
if (!dnp->n_cookiecache) {
nfs_node_unlock(dnp);
return;
}
ndcc = dnp->n_cookiecache;
ndcc->free = 0;
ndcc->mru = -1;
memset(ndcc->next, -1, NFSNUMCOOKIES);
}
prev = -1;
i = ndcc->mru;
while ((i != -1) && (cookie != ndcc->cookies[i].key)) {
if (ndcc->next[i] == -1)
break;
prev = i;
i = ndcc->next[i];
}
if ((i != -1) && (cookie == ndcc->cookies[i].key)) {
if (prev != -1)
ndcc->next[prev] = ndcc->next[i];
else
ndcc->mru = ndcc->next[i];
} else {
if (ndcc->free != NFSNUMCOOKIES)
i = ndcc->free++;
else
ndcc->next[prev] = -1;
ndcc->cookies[i].key = cookie;
ndcc->cookies[i].lbn = lbn;
}
ndcc->next[i] = ndcc->mru;
ndcc->mru = i;
nfs_node_unlock(dnp);
}
int
nfs_dir_cookie_to_lbn(nfsnode_t dnp, uint64_t cookie, int *ptc, uint64_t *lbnp)
{
struct nfsdmap *ndcc = dnp->n_cookiecache;
int8_t eofptc, found;
int i, iptc;
struct nfsmount *nmp;
struct nfsbuf *bp, *lastbp;
struct nfsbuflists blist;
struct direntry *dp, *dpptc;
struct nfs_dir_buf_header *ndbhp;
if (!cookie) {
*lbnp = 0;
*ptc = 0;
return (0);
}
if (nfs_node_lock(dnp))
return (ENOENT);
if (cookie == dnp->n_eofcookie) {
nfs_node_unlock(dnp);
OSAddAtomic64(1, &nfsstats.direofcache_hits);
*ptc = 0;
return (-1);
}
eofptc = *ptc ? NFS_DIR_COOKIE_SAME32(cookie, dnp->n_eofcookie) : 0;
iptc = -1;
for (i = ndcc ? ndcc->mru : -1; i >= 0; i = ndcc->next[i]) {
if (ndcc->cookies[i].key == cookie) {
*lbnp = ndcc->cookies[i].lbn;
nfs_node_unlock(dnp);
OSAddAtomic64(1, &nfsstats.direofcache_hits);
*ptc = 0;
return (0);
}
if (*ptc && (iptc == -1) && NFS_DIR_COOKIE_SAME32(ndcc->cookies[i].key, cookie))
iptc = i;
}
if (eofptc) {
nfs_node_unlock(dnp);
OSAddAtomic64(1, &nfsstats.direofcache_hits);
return (-1);
}
if (iptc >= 0) {
*lbnp = ndcc->cookies[iptc].lbn;
nfs_node_unlock(dnp);
OSAddAtomic64(1, &nfsstats.direofcache_hits);
return (0);
}
nfs_node_unlock(dnp);
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
dpptc = NULL;
found = 0;
lck_mtx_lock(nfs_buf_mutex);
if (!nfs_buf_iterprepare(dnp, &blist, NBI_CLEAN)) {
lastbp = NULL;
while ((bp = LIST_FIRST(&blist))) {
LIST_REMOVE(bp, nb_vnbufs);
if (!lastbp)
LIST_INSERT_HEAD(&dnp->n_cleanblkhd, bp, nb_vnbufs);
else
LIST_INSERT_AFTER(lastbp, bp, nb_vnbufs);
lastbp = bp;
if (found)
continue;
nfs_buf_refget(bp);
if (nfs_buf_acquire(bp, NBAC_NOWAIT, 0, 0)) {
nfs_buf_refrele(bp);
continue;
}
nfs_buf_refrele(bp);
ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
dpptc = NULL;
for (i=0; (i < ndbhp->ndbh_count) && (cookie != dp->d_seekoff); i++) {
if (*ptc && !dpptc && NFS_DIR_COOKIE_SAME32(cookie, dp->d_seekoff)) {
dpptc = dp;
iptc = i;
}
dp = NFS_DIRENTRY_NEXT(dp);
}
if ((i == ndbhp->ndbh_count) && dpptc) {
dp = dpptc;
i = iptc;
} else if (i < ndbhp->ndbh_count) {
*ptc = 0;
}
if (i < (ndbhp->ndbh_count-1)) {
*lbnp = bp->nb_lblkno;
found = 1;
} else if (i == (ndbhp->ndbh_count-1)) {
*lbnp = dp->d_seekoff;
found = 1;
}
nfs_buf_drop(bp);
}
nfs_buf_itercomplete(dnp, &blist, NBI_CLEAN);
}
lck_mtx_unlock(nfs_buf_mutex);
if (found) {
OSAddAtomic64(1, &nfsstats.direofcache_hits);
return (0);
}
*lbnp = cookie;
OSAddAtomic64(1, &nfsstats.direofcache_misses);
return (0);
}
#define NDBS_PURGE 1
#define NDBS_UPDATE 2
int
nfs_dir_buf_search(
struct nfsbuf *bp,
struct componentname *cnp,
fhandle_t *fhp,
struct nfs_vattr *nvap,
uint64_t *xidp,
time_t *attrstampp,
daddr64_t *nextlbnp,
int flags)
{
struct direntry *dp;
struct nfs_dir_buf_header *ndbhp;
struct nfs_vattr *nvattrp;
daddr64_t nextlbn = 0;
int i, error = ESRCH, fhlen;
ndbhp = (struct nfs_dir_buf_header*)bp->nb_data;
dp = NFS_DIR_BUF_FIRST_DIRENTRY(bp);
for (i=0; i < ndbhp->ndbh_count; i++) {
nextlbn = dp->d_seekoff;
if ((cnp->cn_namelen == dp->d_namlen) && !strcmp(cnp->cn_nameptr, dp->d_name)) {
fhlen = dp->d_name[dp->d_namlen+1];
nvattrp = NFS_DIR_BUF_NVATTR(bp, i);
if ((ndbhp->ndbh_ncgen != bp->nb_np->n_ncgen) || (fhp->fh_len == 0) ||
(nvattrp->nva_type == VNON) || (nvattrp->nva_fileid == 0)) {
error = ENOENT;
break;
}
if (flags == NDBS_PURGE) {
dp->d_fileno = 0;
bzero(nvattrp, sizeof(*nvattrp));
error = ENOENT;
break;
}
if (flags == NDBS_UPDATE) {
if ((fhp->fh_len == fhlen) && !bcmp(&dp->d_name[dp->d_namlen+2], fhp->fh_data, fhlen)) {
bcopy(nvap, nvattrp, sizeof(*nvap));
dp->d_fileno = nvattrp->nva_fileid;
nvattrp->nva_fileid = *xidp;
*(time_t*)(&dp->d_name[dp->d_namlen+2+fhp->fh_len]) = *attrstampp;
}
error = 0;
break;
}
fhp->fh_len = fhlen;
bcopy(&dp->d_name[dp->d_namlen+2], fhp->fh_data, MAX(fhp->fh_len, (int)sizeof(fhp->fh_data)));
*attrstampp = *(time_t*)(&dp->d_name[dp->d_namlen+2+fhp->fh_len]);
bcopy(nvattrp, nvap, sizeof(*nvap));
*xidp = nvap->nva_fileid;
nvap->nva_fileid = dp->d_fileno;
error = 0;
break;
}
dp = NFS_DIRENTRY_NEXT(dp);
}
if (nextlbnp)
*nextlbnp = nextlbn;
return (error);
}
int
nfs_dir_buf_cache_lookup(nfsnode_t dnp, nfsnode_t *npp, struct componentname *cnp, vfs_context_t ctx, int purge)
{
nfsnode_t newnp;
struct nfsmount *nmp;
int error = 0, i, found = 0, count = 0;
u_int64_t xid;
struct nfs_vattr nvattr;
fhandle_t fh;
time_t attrstamp = 0;
thread_t thd = vfs_context_thread(ctx);
struct nfsbuf *bp, *lastbp, *foundbp;
struct nfsbuflists blist;
daddr64_t lbn, nextlbn;
int dotunder = (cnp->cn_namelen > 2) && (cnp->cn_nameptr[0] == '.') && (cnp->cn_nameptr[1] == '_');
if (!(nmp = NFSTONMP(dnp)))
return (ENXIO);
if (!purge)
*npp = NULL;
lbn = dnp->n_lastdbl;
for (i=0; i < 2; i++) {
if ((error = nfs_buf_get(dnp, lbn, NFS_DIRBLKSIZ, thd, NBLK_READ|NBLK_ONLYVALID, &bp)))
return (error);
if (!bp)
break;
count++;
error = nfs_dir_buf_search(bp, cnp, &fh, &nvattr, &xid, &attrstamp, &nextlbn, purge ? NDBS_PURGE : 0);
nfs_buf_release(bp, 0);
if (error == ESRCH) {
error = 0;
} else {
found = 1;
break;
}
lbn = nextlbn;
}
lck_mtx_lock(nfs_buf_mutex);
if (found) {
dnp->n_lastdbl = lbn;
goto done;
}
if (!nfs_buf_iterprepare(dnp, &blist, NBI_CLEAN)) {
lastbp = foundbp = NULL;
while ((bp = LIST_FIRST(&blist))) {
LIST_REMOVE(bp, nb_vnbufs);
if (!lastbp)
LIST_INSERT_HEAD(&dnp->n_cleanblkhd, bp, nb_vnbufs);
else
LIST_INSERT_AFTER(lastbp, bp, nb_vnbufs);
lastbp = bp;
if (error || found)
continue;
if (!purge && dotunder && (count > 100))
continue;
nfs_buf_refget(bp);
lbn = bp->nb_lblkno;
if (nfs_buf_acquire(bp, NBAC_NOWAIT, 0, 0)) {
nfs_buf_refrele(bp);
continue;
}
nfs_buf_refrele(bp);
count++;
error = nfs_dir_buf_search(bp, cnp, &fh, &nvattr, &xid, &attrstamp, NULL, purge ? NDBS_PURGE : 0);
if (error == ESRCH) {
error = 0;
} else {
found = 1;
foundbp = bp;
}
nfs_buf_drop(bp);
}
if (found) {
LIST_REMOVE(foundbp, nb_vnbufs);
LIST_INSERT_HEAD(&dnp->n_cleanblkhd, foundbp, nb_vnbufs);
dnp->n_lastdbl = foundbp->nb_lblkno;
}
nfs_buf_itercomplete(dnp, &blist, NBI_CLEAN);
}
done:
lck_mtx_unlock(nfs_buf_mutex);
if (!error && found && !purge) {
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len,
&nvattr, &xid, dnp->n_auth, NG_MAKEENTRY, &newnp);
if (error)
return (error);
newnp->n_attrstamp = attrstamp;
*npp = newnp;
nfs_node_unlock(newnp);
if (!nfs_getattr(newnp, &nvattr, ctx, NGA_CACHED) &&
(newnp->n_attrstamp != attrstamp)) {
error = nfs_buf_get(dnp, lbn, NFS_DIRBLKSIZ, thd, NBLK_READ|NBLK_ONLYVALID, &bp);
if (!error && bp) {
attrstamp = newnp->n_attrstamp;
xid = newnp->n_xid;
nfs_dir_buf_search(bp, cnp, &fh, &nvattr, &xid, &attrstamp, NULL, NDBS_UPDATE);
nfs_buf_release(bp, 0);
}
error = 0;
}
}
return (error);
}
void
nfs_name_cache_purge(nfsnode_t dnp, nfsnode_t np, struct componentname *cnp, vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(dnp);
cache_purge(NFSTOV(np));
if (nmp && (nmp->nm_vers > NFS_VER2) && NMFLAG(nmp, RDIRPLUS))
nfs_dir_buf_cache_lookup(dnp, NULL, cnp, ctx, 1);
}
int
nfs3_readdir_rpc(nfsnode_t dnp, struct nfsbuf *bp, vfs_context_t ctx)
{
struct nfsmount *nmp;
int error = 0, lockerror, nfsvers, rdirplus, bigcookies;
int i, status, attrflag, fhflag, 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, fileno;
struct nfsm_chain nmreq, nmrep, nmrepsave;
fhandle_t fh;
struct nfs_vattr *nvattrp;
struct nfs_dir_buf_header *ndbhp;
struct direntry *dp;
char *padstart, padlen;
struct timeval now;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nmreaddirsize = nmp->nm_readdirsize;
nmrsize = nmp->nm_rsize;
bigcookies = nmp->nm_state & NFSSTA_BIGCOOKIES;
noplus:
rdirplus = ((nfsvers > NFS_VER2) && NMFLAG(nmp, RDIRPLUS)) ? 1 : 0;
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;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
while (nfs_dir_buf_freespace(bp, rdirplus) && !(ndbhp->ndbh_flags & NDB_FULL)) {
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_READDIR(nfsvers) + NFSX_UNSIGNED);
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
if (nfsvers == NFS_VER3) {
nfsm_chain_add_64(error, &nmreq, cookie);
nfsm_chain_add_64(error, &nmreq, dnp->n_cookieverf);
} else {
nfsm_chain_add_32(error, &nmreq, cookie);
}
nfsm_chain_add_32(error, &nmreq, nmreaddirsize);
if (rdirplus)
nfsm_chain_add_32(error, &nmreq, nmrsize);
nfsm_chain_build_done(error, &nmreq);
nfs_node_unlock(dnp);
lockerror = ENOENT;
nfsmout_if(error);
error = nfs_request(dnp, NULL, &nmreq,
rdirplus ? NFSPROC_READDIRPLUS : NFSPROC_READDIR,
ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
savedxid = xid;
if (nfsvers == NFS_VER3)
nfsm_chain_postop_attr_update(error, &nmrep, dnp, &xid);
if (!error)
error = status;
if (nfsvers == NFS_VER3)
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;
}
if (error == NFSERR_NOTSUPP) {
lck_mtx_lock(&nmp->nm_lock);
NFS_BITMAP_CLR(nmp->nm_flags, NFS_MFLAG_RDIRPLUS);
lck_mtx_unlock(&nmp->nm_lock);
goto noplus;
}
nfsmout_if(error);
if (rdirplus)
microuptime(&now);
while (more_entries) {
if (nfsvers == NFS_VER3)
nfsm_chain_get_64(error, &nmrep, fileno);
else
nfsm_chain_get_32(error, &nmrep, fileno);
nfsm_chain_get_32(error, &nmrep, namlen);
nfsmout_if(error);
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 = fileno;
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));
if (nfsvers == NFS_VER3)
nfsm_chain_get_64(error, &nmrep, cookie);
else
nfsm_chain_get_32(error, &nmrep, cookie);
nfsmout_if(error);
dp->d_seekoff = cookie;
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 (rdirplus) {
nvattrp = NFS_DIR_BUF_NVATTR(bp, ndbhp->ndbh_count);
nfsm_chain_get_32(error, &nmrep, attrflag);
nfsmout_if(error);
if (attrflag) {
error = nfs_parsefattr(&nmrep, NFS_VER3, nvattrp);
nfsmout_if(error);
dp->d_type = IFTODT(VTTOIF(nvattrp->nva_type));
nvattrp->nva_fileid = savedxid;
} else {
bzero(nvattrp, sizeof(struct nfs_vattr));
}
nfsm_chain_get_32(error, &nmrep, fhflag);
nfsmout_if(error);
if (fhflag) {
nfsm_chain_get_fh(error, &nmrep, NFS_VER3, &fh);
nfsmout_if(error);
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, more_entries);
nfsmout_if(error);
}
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);
}
#define NFS_SILLYNAME_FORMAT ".nfs.%08x.%04x"
static uint32_t nfs_sillyrename_number = 0x20051025;
int
nfs_sillyrename(
nfsnode_t dnp,
nfsnode_t np,
struct componentname *cnp,
vfs_context_t ctx)
{
struct nfs_sillyrename *nsp;
int error;
short pid;
kauth_cred_t cred;
uint32_t num;
struct nfsmount *nmp;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
nfs_name_cache_purge(dnp, np, cnp, ctx);
MALLOC_ZONE(nsp, struct nfs_sillyrename *,
sizeof (struct nfs_sillyrename), M_NFSREQ, M_WAITOK);
if (!nsp)
return (ENOMEM);
cred = vfs_context_ucred(ctx);
kauth_cred_ref(cred);
nsp->nsr_cred = cred;
nsp->nsr_dnp = dnp;
error = vnode_ref(NFSTOV(dnp));
if (error)
goto bad_norele;
pid = vfs_context_pid(ctx);
num = OSAddAtomic(1, &nfs_sillyrename_number);
nsp->nsr_namlen = snprintf(nsp->nsr_name, sizeof(nsp->nsr_name),
NFS_SILLYNAME_FORMAT, num, (pid & 0xffff));
if (nsp->nsr_namlen >= (int)sizeof(nsp->nsr_name))
nsp->nsr_namlen = sizeof(nsp->nsr_name) - 1;
while (nfs_lookitup(dnp, nsp->nsr_name, nsp->nsr_namlen, ctx, NULL) == 0) {
num = OSAddAtomic(1, &nfs_sillyrename_number);
nsp->nsr_namlen = snprintf(nsp->nsr_name, sizeof(nsp->nsr_name),
NFS_SILLYNAME_FORMAT, num, (pid & 0xffff));
if (nsp->nsr_namlen >= (int)sizeof(nsp->nsr_name))
nsp->nsr_namlen = sizeof(nsp->nsr_name) - 1;
}
error = nmp->nm_funcs->nf_rename_rpc(dnp, cnp->cn_nameptr, cnp->cn_namelen,
dnp, nsp->nsr_name, nsp->nsr_namlen, ctx);
if (error == ENOENT)
error = 0;
if (!error) {
nfs_node_lock_force(dnp);
if (dnp->n_flag & NNEGNCENTRIES) {
dnp->n_flag &= ~NNEGNCENTRIES;
cache_purge_negatives(NFSTOV(dnp));
}
nfs_node_unlock(dnp);
}
FSDBG(267, dnp, np, num, error);
if (error)
goto bad;
error = nfs_lookitup(dnp, nsp->nsr_name, nsp->nsr_namlen, ctx, &np);
nfs_node_lock_force(np);
np->n_sillyrename = nsp;
nfs_node_unlock(np);
return (0);
bad:
vnode_rele(NFSTOV(dnp));
bad_norele:
nsp->nsr_cred = NOCRED;
kauth_cred_unref(&cred);
FREE_ZONE(nsp, sizeof(*nsp), M_NFSREQ);
return (error);
}
int
nfs3_lookup_rpc_async(
nfsnode_t dnp,
char *name,
int namelen,
vfs_context_t ctx,
struct nfsreq **reqp)
{
struct nfsmount *nmp;
struct nfsm_chain nmreq;
int error = 0, nfsvers;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmreq);
nfsm_chain_build_alloc_init(error, &nmreq,
NFSX_FH(nfsvers) + NFSX_UNSIGNED + nfsm_rndup(namelen));
nfsm_chain_add_fh(error, &nmreq, nfsvers, dnp->n_fhp, dnp->n_fhsize);
nfsm_chain_add_name(error, &nmreq, name, namelen, nmp);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request_async(dnp, NULL, &nmreq, NFSPROC_LOOKUP,
vfs_context_thread(ctx), vfs_context_ucred(ctx), NULL, 0, NULL, reqp);
nfsmout:
nfsm_chain_cleanup(&nmreq);
return (error);
}
int
nfs3_lookup_rpc_async_finish(
nfsnode_t dnp,
__unused char *name,
__unused 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, attrflag;
u_int64_t xid;
struct nfsmount *nmp;
struct nfsm_chain nmrep;
nmp = NFSTONMP(dnp);
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmrep);
error = nfs_request_async_finish(req, &nmrep, xidp, &status);
if ((lockerror = nfs_node_lock(dnp)))
error = lockerror;
xid = *xidp;
if (error || status) {
if (nfsvers == NFS_VER3)
nfsm_chain_postop_attr_update(error, &nmrep, dnp, &xid);
if (!error)
error = status;
goto nfsmout;
}
nfsmout_if(error || !fhp || !nvap);
nfsm_chain_get_fh(error, &nmrep, nfsvers, fhp);
if (nfsvers == NFS_VER3) {
nfsm_chain_postop_attr_get(error, &nmrep, attrflag, nvap);
nfsm_chain_postop_attr_update(error, &nmrep, dnp, &xid);
if (!error && !attrflag)
error = nfs3_getattr_rpc(NULL, NFSTOMP(dnp), fhp->fh_data, fhp->fh_len, 0, ctx, nvap, xidp);
} else {
error = nfs_parsefattr(&nmrep, nfsvers, nvap);
}
nfsmout:
if (!lockerror)
nfs_node_unlock(dnp);
nfsm_chain_cleanup(&nmrep);
return (error);
}
int
nfs_lookitup(
nfsnode_t dnp,
char *name,
int namelen,
vfs_context_t ctx,
nfsnode_t *npp)
{
int error = 0;
nfsnode_t np, newnp = NULL;
u_int64_t xid;
fhandle_t fh;
struct nfsmount *nmp;
struct nfs_vattr nvattr;
struct nfsreq rq, *req = &rq;
nmp = NFSTONMP(dnp);
if (!nmp)
return (ENXIO);
if (NFS_BITMAP_ISSET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXNAME) &&
(namelen > (int)nmp->nm_fsattr.nfsa_maxname))
return (ENAMETOOLONG);
NVATTR_INIT(&nvattr);
if ((name[0] == '.') && (namelen == 1)) {
fh.fh_len = 0;
newnp = dnp;
goto nfsmout;
}
error = nmp->nm_funcs->nf_lookup_rpc_async(dnp, name, namelen, ctx, &req);
nfsmout_if(error);
error = nmp->nm_funcs->nf_lookup_rpc_async_finish(dnp, name, namelen, ctx, req, &xid, &fh, &nvattr);
nfsmout_if(!npp || error);
if (*npp) {
np = *npp;
if (fh.fh_len != np->n_fhsize) {
u_char *oldbuf = (np->n_fhsize > NFS_SMALLFH) ? np->n_fhp : NULL;
if (fh.fh_len > NFS_SMALLFH) {
MALLOC_ZONE(np->n_fhp, u_char *, fh.fh_len, M_NFSBIGFH, M_WAITOK);
if (!np->n_fhp) {
np->n_fhp = oldbuf;
error = ENOMEM;
goto nfsmout;
}
} else {
np->n_fhp = &np->n_fh[0];
}
if (oldbuf)
FREE_ZONE(oldbuf, np->n_fhsize, M_NFSBIGFH);
}
bcopy(fh.fh_data, np->n_fhp, fh.fh_len);
np->n_fhsize = fh.fh_len;
nfs_node_lock_force(np);
error = nfs_loadattrcache(np, &nvattr, &xid, 0);
nfs_node_unlock(np);
nfsmout_if(error);
newnp = np;
} else if (NFS_CMPFH(dnp, fh.fh_data, fh.fh_len)) {
nfs_node_lock_force(dnp);
if (dnp->n_xid <= xid)
error = nfs_loadattrcache(dnp, &nvattr, &xid, 0);
nfs_node_unlock(dnp);
nfsmout_if(error);
newnp = dnp;
} else {
struct componentname cn, *cnp = &cn;
bzero(cnp, sizeof(*cnp));
cnp->cn_nameptr = name;
cnp->cn_namelen = namelen;
error = nfs_nget(NFSTOMP(dnp), dnp, cnp, fh.fh_data, fh.fh_len,
&nvattr, &xid, rq.r_auth, NG_MAKEENTRY, &np);
nfsmout_if(error);
newnp = np;
}
nfsmout:
if (npp && !*npp && !error)
*npp = newnp;
NVATTR_CLEANUP(&nvattr);
return (error);
}
void
nfs_dulookup_init(struct nfs_dulookup *dulp, nfsnode_t dnp, const char *name, int namelen, vfs_context_t ctx)
{
int error, du_namelen;
vnode_t du_vp;
struct nfsmount *nmp = NFSTONMP(dnp);
dulp->du_flags = 0;
bzero(&dulp->du_cn, sizeof(dulp->du_cn));
du_namelen = namelen + 2;
if (!nmp || NMFLAG(nmp, NONEGNAMECACHE))
return;
if ((namelen >= 2) && (name[0] == '.') && (name[1] == '_'))
return;
if (du_namelen >= (int)sizeof(dulp->du_smallname))
MALLOC(dulp->du_cn.cn_nameptr, char *, du_namelen + 1, M_TEMP, M_WAITOK);
else
dulp->du_cn.cn_nameptr = dulp->du_smallname;
if (!dulp->du_cn.cn_nameptr)
return;
dulp->du_cn.cn_namelen = du_namelen;
snprintf(dulp->du_cn.cn_nameptr, du_namelen + 1, "._%s", name);
dulp->du_cn.cn_nameptr[du_namelen] = '\0';
dulp->du_cn.cn_nameiop = LOOKUP;
dulp->du_cn.cn_flags = MAKEENTRY;
error = cache_lookup(NFSTOV(dnp), &du_vp, &dulp->du_cn);
if (error == -1) {
vnode_put(du_vp);
} else if (!error) {
nmp = NFSTONMP(dnp);
if (nmp && (nmp->nm_vers > NFS_VER2) && NMFLAG(nmp, RDIRPLUS)) {
nfsnode_t du_np = NULL;
if (!nfs_dir_buf_cache_lookup(dnp, &du_np, &dulp->du_cn, ctx, 0) && du_np) {
du_vp = NFSTOV(du_np);
vnode_put(du_vp);
error = -1;
}
}
if (!error)
dulp->du_flags |= NFS_DULOOKUP_DOIT;
}
}
void
nfs_dulookup_start(struct nfs_dulookup *dulp, nfsnode_t dnp, vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(dnp);
struct nfsreq *req = &dulp->du_req;
if (!nmp || !(dulp->du_flags & NFS_DULOOKUP_DOIT) || (dulp->du_flags & NFS_DULOOKUP_INPROG))
return;
if (!nmp->nm_funcs->nf_lookup_rpc_async(dnp, dulp->du_cn.cn_nameptr,
dulp->du_cn.cn_namelen, ctx, &req))
dulp->du_flags |= NFS_DULOOKUP_INPROG;
}
void
nfs_dulookup_finish(struct nfs_dulookup *dulp, nfsnode_t dnp, vfs_context_t ctx)
{
struct nfsmount *nmp = NFSTONMP(dnp);
int error;
nfsnode_t du_np;
u_int64_t xid;
fhandle_t fh;
struct nfs_vattr nvattr;
if (!nmp || !(dulp->du_flags & NFS_DULOOKUP_INPROG))
goto out;
NVATTR_INIT(&nvattr);
error = nmp->nm_funcs->nf_lookup_rpc_async_finish(dnp, dulp->du_cn.cn_nameptr,
dulp->du_cn.cn_namelen, ctx, &dulp->du_req, &xid, &fh, &nvattr);
dulp->du_flags &= ~NFS_DULOOKUP_INPROG;
if (error == ENOENT) {
nfs_node_lock_force(dnp);
cache_enter(NFSTOV(dnp), NULL, &dulp->du_cn);
dnp->n_flag |= NNEGNCENTRIES;
nfs_node_unlock(dnp);
} else if (!error) {
error = nfs_nget(NFSTOMP(dnp), dnp, &dulp->du_cn, fh.fh_data, fh.fh_len,
&nvattr, &xid, dulp->du_req.r_auth, NG_MAKEENTRY, &du_np);
if (!error) {
nfs_node_unlock(du_np);
vnode_put(NFSTOV(du_np));
}
}
NVATTR_CLEANUP(&nvattr);
out:
if (dulp->du_flags & NFS_DULOOKUP_INPROG)
nfs_request_async_cancel(&dulp->du_req);
if (dulp->du_cn.cn_nameptr && (dulp->du_cn.cn_nameptr != dulp->du_smallname))
FREE(dulp->du_cn.cn_nameptr, M_TEMP);
}
int
nfs3_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, wccpostattr = 0, nfsvers;
struct timespec premtime = { 0, 0 };
u_int64_t xid, newwverf;
uint32_t count32;
struct nfsm_chain nmreq, nmrep;
nmp = NFSTONMP(np);
FSDBG(521, np, offset, count, nmp ? nmp->nm_state : 0);
if (!nmp)
return (ENXIO);
if (!(nmp->nm_state & NFSSTA_HASWRITEVERF))
return (0);
nfsvers = nmp->nm_vers;
if (count > UINT32_MAX)
count32 = 0;
else
count32 = count;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(NFS_VER3));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
nfsm_chain_add_64(error, &nmreq, offset);
nfsm_chain_add_32(error, &nmreq, count32);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request2(np, NULL, &nmreq, NFSPROC_COMMIT,
current_thread(), cred, NULL, 0, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_get_wcc_data(error, &nmrep, np, &premtime, &wccpostattr, &xid);
if (!lockerror)
nfs_node_unlock(np);
if (!error)
error = status;
nfsm_chain_get_64(error, &nmrep, newwverf);
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
nfs_vnop_blockmap(
__unused struct vnop_blockmap_args *ap)
{
return (ENOTSUP);
}
int
nfs_vnop_fsync(
struct vnop_fsync_args *ap)
{
return (nfs_flush(VTONFS(ap->a_vp), ap->a_waitfor, vfs_context_thread(ap->a_context), 0));
}
int
nfs3_pathconf_rpc(
nfsnode_t np,
struct nfs_fsattr *nfsap,
vfs_context_t ctx)
{
u_int64_t xid;
int error = 0, lockerror, status, nfsvers;
struct nfsm_chain nmreq, nmrep;
struct nfsmount *nmp = NFSTONMP(np);
uint32_t val = 0;
if (!nmp)
return (ENXIO);
nfsvers = nmp->nm_vers;
nfsm_chain_null(&nmreq);
nfsm_chain_null(&nmrep);
nfsm_chain_build_alloc_init(error, &nmreq, NFSX_FH(NFS_VER3));
nfsm_chain_add_fh(error, &nmreq, nfsvers, np->n_fhp, np->n_fhsize);
nfsm_chain_build_done(error, &nmreq);
nfsmout_if(error);
error = nfs_request(np, NULL, &nmreq, NFSPROC_PATHCONF, ctx, NULL, &nmrep, &xid, &status);
if ((lockerror = nfs_node_lock(np)))
error = lockerror;
nfsm_chain_postop_attr_update(error, &nmrep, np, &xid);
if (!lockerror)
nfs_node_unlock(np);
if (!error)
error = status;
nfsm_chain_get_32(error, &nmrep, nfsap->nfsa_maxlink);
nfsm_chain_get_32(error, &nmrep, nfsap->nfsa_maxname);
nfsm_chain_get_32(error, &nmrep, val);
if (val)
nfsap->nfsa_flags |= NFS_FSFLAG_NO_TRUNC;
nfsm_chain_get_32(error, &nmrep, val);
if (val)
nfsap->nfsa_flags |= NFS_FSFLAG_CHOWN_RESTRICTED;
nfsm_chain_get_32(error, &nmrep, val);
if (val)
nfsap->nfsa_flags |= NFS_FSFLAG_CASE_INSENSITIVE;
nfsm_chain_get_32(error, &nmrep, val);
if (val)
nfsap->nfsa_flags |= NFS_FSFLAG_CASE_PRESERVING;
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_MAXLINK);
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_MAXNAME);
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_NO_TRUNC);
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_CHOWN_RESTRICTED);
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_CASE_INSENSITIVE);
NFS_BITMAP_SET(nfsap->nfsa_bitmap, NFS_FATTR_CASE_PRESERVING);
nfsmout:
nfsm_chain_cleanup(&nmreq);
nfsm_chain_cleanup(&nmrep);
return (error);
}
void
nfs3_pathconf_cache(struct nfsmount *nmp, struct nfs_fsattr *nfsap)
{
nmp->nm_fsattr.nfsa_maxlink = nfsap->nfsa_maxlink;
nmp->nm_fsattr.nfsa_maxname = nfsap->nfsa_maxname;
nmp->nm_fsattr.nfsa_flags |= nfsap->nfsa_flags & NFS_FSFLAG_NO_TRUNC;
nmp->nm_fsattr.nfsa_flags |= nfsap->nfsa_flags & NFS_FSFLAG_CHOWN_RESTRICTED;
nmp->nm_fsattr.nfsa_flags |= nfsap->nfsa_flags & NFS_FSFLAG_CASE_INSENSITIVE;
nmp->nm_fsattr.nfsa_flags |= nfsap->nfsa_flags & NFS_FSFLAG_CASE_PRESERVING;
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXLINK);
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_MAXNAME);
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_NO_TRUNC);
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CHOWN_RESTRICTED);
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CASE_INSENSITIVE);
NFS_BITMAP_SET(nmp->nm_fsattr.nfsa_bitmap, NFS_FATTR_CASE_PRESERVING);
nmp->nm_state |= NFSSTA_GOTPATHCONF;
}
int
nfs_vnop_pathconf(
struct vnop_pathconf_args *ap)
{
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct nfsmount *nmp;
struct nfs_fsattr nfsa, *nfsap;
int error = 0;
uint64_t maxFileSize;
uint nbits;
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
switch (ap->a_name) {
case _PC_LINK_MAX:
case _PC_NAME_MAX:
case _PC_CHOWN_RESTRICTED:
case _PC_NO_TRUNC:
case _PC_CASE_SENSITIVE:
case _PC_CASE_PRESERVING:
break;
case _PC_FILESIZEBITS:
if (nmp->nm_vers == NFS_VER2) {
*ap->a_retval = 32;
return (0);
}
break;
case _PC_XATTR_SIZE_BITS:
if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_NAMED_ATTR)
break;
default:
return (EINVAL);
}
if (nmp->nm_vers == NFS_VER2)
return (EINVAL);
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_vers == NFS_VER3) {
if (!(nmp->nm_state & NFSSTA_GOTPATHCONF)) {
lck_mtx_unlock(&nmp->nm_lock);
NFS_CLEAR_ATTRIBUTES(nfsa.nfsa_bitmap);
error = nfs3_pathconf_rpc(np, &nfsa, ap->a_context);
if (error)
return (error);
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
lck_mtx_lock(&nmp->nm_lock);
if (nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_HOMOGENEOUS) {
nfs3_pathconf_cache(nmp, &nfsa);
}
nfsap = &nfsa;
} else {
nfsap = &nmp->nm_fsattr;
}
} else if (!(nmp->nm_fsattr.nfsa_flags & NFS_FSFLAG_HOMOGENEOUS)) {
lck_mtx_unlock(&nmp->nm_lock);
NFS_CLEAR_ATTRIBUTES(nfsa.nfsa_bitmap);
error = nfs4_pathconf_rpc(np, &nfsa, ap->a_context);
if (error)
return (error);
nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
lck_mtx_lock(&nmp->nm_lock);
nfsap = &nfsa;
} else {
nfsap = &nmp->nm_fsattr;
}
switch (ap->a_name) {
case _PC_LINK_MAX:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_MAXLINK))
*ap->a_retval = nfsap->nfsa_maxlink;
else if ((nmp->nm_vers == NFS_VER4) && NFS_BITMAP_ISSET(np->n_vattr.nva_bitmap, NFS_FATTR_MAXLINK))
*ap->a_retval = np->n_vattr.nva_maxlink;
else
error = EINVAL;
break;
case _PC_NAME_MAX:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_MAXNAME))
*ap->a_retval = nfsap->nfsa_maxname;
else
error = EINVAL;
break;
case _PC_CHOWN_RESTRICTED:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_CHOWN_RESTRICTED))
*ap->a_retval = (nfsap->nfsa_flags & NFS_FSFLAG_CHOWN_RESTRICTED) ? 200112 : 0;
else
error = EINVAL;
break;
case _PC_NO_TRUNC:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_NO_TRUNC))
*ap->a_retval = (nfsap->nfsa_flags & NFS_FSFLAG_NO_TRUNC) ? 200112 : 0;
else
error = EINVAL;
break;
case _PC_CASE_SENSITIVE:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_CASE_INSENSITIVE))
*ap->a_retval = (nfsap->nfsa_flags & NFS_FSFLAG_CASE_INSENSITIVE) ? 0 : 1;
else
error = EINVAL;
break;
case _PC_CASE_PRESERVING:
if (NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_CASE_PRESERVING))
*ap->a_retval = (nfsap->nfsa_flags & NFS_FSFLAG_CASE_PRESERVING) ? 1 : 0;
else
error = EINVAL;
break;
case _PC_XATTR_SIZE_BITS:
case _PC_FILESIZEBITS:
if (!NFS_BITMAP_ISSET(nfsap->nfsa_bitmap, NFS_FATTR_MAXFILESIZE)) {
*ap->a_retval = 64;
error = 0;
break;
}
maxFileSize = nfsap->nfsa_maxfilesize;
nbits = 1;
if (maxFileSize & 0xffffffff00000000ULL) {
nbits += 32;
maxFileSize >>= 32;
}
if (maxFileSize & 0xffff0000) {
nbits += 16;
maxFileSize >>= 16;
}
if (maxFileSize & 0xff00) {
nbits += 8;
maxFileSize >>= 8;
}
if (maxFileSize & 0xf0) {
nbits += 4;
maxFileSize >>= 4;
}
if (maxFileSize & 0xc) {
nbits += 2;
maxFileSize >>= 2;
}
if (maxFileSize & 0x2) {
nbits += 1;
}
*ap->a_retval = nbits;
break;
default:
error = EINVAL;
}
lck_mtx_unlock(&nmp->nm_lock);
return (error);
}
int
nfsspec_vnop_read(
struct vnop_read_args *ap)
{
nfsnode_t np = VTONFS(ap->a_vp);
struct timeval now;
int error;
if ((error = nfs_node_lock(np)))
return (error);
np->n_flag |= NACC;
microtime(&now);
np->n_atim.tv_sec = now.tv_sec;
np->n_atim.tv_nsec = now.tv_usec * 1000;
nfs_node_unlock(np);
return (VOCALL(spec_vnodeop_p, VOFFSET(vnop_read), ap));
}
int
nfsspec_vnop_write(
struct vnop_write_args *ap)
{
nfsnode_t np = VTONFS(ap->a_vp);
struct timeval now;
int error;
if ((error = nfs_node_lock(np)))
return (error);
np->n_flag |= NUPD;
microtime(&now);
np->n_mtim.tv_sec = now.tv_sec;
np->n_mtim.tv_nsec = now.tv_usec * 1000;
nfs_node_unlock(np);
return (VOCALL(spec_vnodeop_p, VOFFSET(vnop_write), ap));
}
int
nfsspec_vnop_close(
struct vnop_close_args *ap)
{
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct vnode_attr vattr;
mount_t mp;
int error;
if ((error = nfs_node_lock(np)))
return (error);
if (np->n_flag & (NACC | NUPD)) {
np->n_flag |= NCHG;
if (!vnode_isinuse(vp, 0) && (mp = vnode_mount(vp)) && !vfs_isrdonly(mp)) {
VATTR_INIT(&vattr);
if (np->n_flag & NACC) {
vattr.va_access_time = np->n_atim;
VATTR_SET_ACTIVE(&vattr, va_access_time);
}
if (np->n_flag & NUPD) {
vattr.va_modify_time = np->n_mtim;
VATTR_SET_ACTIVE(&vattr, va_modify_time);
}
nfs_node_unlock(np);
vnode_setattr(vp, &vattr, ap->a_context);
} else {
nfs_node_unlock(np);
}
} else {
nfs_node_unlock(np);
}
return (VOCALL(spec_vnodeop_p, VOFFSET(vnop_close), ap));
}
#if FIFO
extern vnop_t **fifo_vnodeop_p;
int
nfsfifo_vnop_read(
struct vnop_read_args *ap)
{
nfsnode_t np = VTONFS(ap->a_vp);
struct timeval now;
int error;
if ((error = nfs_node_lock(np)))
return (error);
np->n_flag |= NACC;
microtime(&now);
np->n_atim.tv_sec = now.tv_sec;
np->n_atim.tv_nsec = now.tv_usec * 1000;
nfs_node_unlock(np);
return (VOCALL(fifo_vnodeop_p, VOFFSET(vnop_read), ap));
}
int
nfsfifo_vnop_write(
struct vnop_write_args *ap)
{
nfsnode_t np = VTONFS(ap->a_vp);
struct timeval now;
int error;
if ((error = nfs_node_lock(np)))
return (error);
np->n_flag |= NUPD;
microtime(&now);
np->n_mtim.tv_sec = now.tv_sec;
np->n_mtim.tv_nsec = now.tv_usec * 1000;
nfs_node_unlock(np);
return (VOCALL(fifo_vnodeop_p, VOFFSET(vnop_write), ap));
}
int
nfsfifo_vnop_close(
struct vnop_close_args *ap)
{
vnode_t vp = ap->a_vp;
nfsnode_t np = VTONFS(vp);
struct vnode_attr vattr;
struct timeval now;
mount_t mp;
int error;
if ((error = nfs_node_lock(np)))
return (error);
if (np->n_flag & (NACC | NUPD)) {
microtime(&now);
if (np->n_flag & NACC) {
np->n_atim.tv_sec = now.tv_sec;
np->n_atim.tv_nsec = now.tv_usec * 1000;
}
if (np->n_flag & NUPD) {
np->n_mtim.tv_sec = now.tv_sec;
np->n_mtim.tv_nsec = now.tv_usec * 1000;
}
np->n_flag |= NCHG;
if (!vnode_isinuse(vp, 1) && (mp = vnode_mount(vp)) && !vfs_isrdonly(mp)) {
VATTR_INIT(&vattr);
if (np->n_flag & NACC) {
vattr.va_access_time = np->n_atim;
VATTR_SET_ACTIVE(&vattr, va_access_time);
}
if (np->n_flag & NUPD) {
vattr.va_modify_time = np->n_mtim;
VATTR_SET_ACTIVE(&vattr, va_modify_time);
}
nfs_node_unlock(np);
vnode_setattr(vp, &vattr, ap->a_context);
} else {
nfs_node_unlock(np);
}
} else {
nfs_node_unlock(np);
}
return (VOCALL(fifo_vnodeop_p, VOFFSET(vnop_close), ap));
}
#endif
int
nfs_vnop_ioctl(
struct vnop_ioctl_args *ap)
{
vfs_context_t ctx = ap->a_context;
vnode_t vp = ap->a_vp;
int error = ENOTTY;
switch (ap->a_command) {
case F_FULLFSYNC:
if (vnode_vfsisrdonly(vp))
return (EROFS);
if (!VTONMP(vp))
return (ENXIO);
error = nfs_flush(VTONFS(vp), MNT_WAIT, vfs_context_thread(ctx), 0);
break;
}
return (error);
}
int
nfs_vnop_select(
__unused struct vnop_select_args *ap)
{
return (1);
}
int
nfs_vnop_pagein(
struct vnop_pagein_args *ap)
{
vnode_t vp = ap->a_vp;
upl_t pl = ap->a_pl;
size_t size = ap->a_size;
off_t f_offset = ap->a_f_offset;
vm_offset_t pl_offset = ap->a_pl_offset;
int flags = ap->a_flags;
thread_t thd;
kauth_cred_t cred;
nfsnode_t np = VTONFS(vp);
size_t nmrsize, iosize, txsize, rxsize, retsize;
off_t txoffset;
struct nfsmount *nmp;
int error = 0;
vm_offset_t ioaddr, rxaddr;
uio_t uio;
char uio_buf [ UIO_SIZEOF(1) ];
int nofreeupl = flags & UPL_NOCOMMIT;
upl_page_info_t *plinfo;
#define MAXPAGINGREQS 16
struct nfsreq *req[MAXPAGINGREQS];
int nextsend, nextwait;
uint32_t stategenid = 0, restart = 0;
kern_return_t kret;
FSDBG(322, np, f_offset, size, flags);
if (pl == (upl_t)NULL)
panic("nfs_pagein: no upl");
if (size <= 0) {
printf("nfs_pagein: invalid size %ld", size);
if (!nofreeupl)
(void) ubc_upl_abort_range(pl, pl_offset, size, 0);
return (EINVAL);
}
if (f_offset < 0 || f_offset >= (off_t)np->n_size || (f_offset & PAGE_MASK_64)) {
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size,
UPL_ABORT_ERROR | UPL_ABORT_FREE_ON_EMPTY);
return (EINVAL);
}
thd = vfs_context_thread(ap->a_context);
cred = ubc_getcred(vp);
if (!IS_VALID_CRED(cred))
cred = vfs_context_ucred(ap->a_context);
uio = uio_createwithbuffer(1, f_offset, UIO_SYSSPACE, UIO_READ,
&uio_buf, sizeof(uio_buf));
nmp = VTONMP(vp);
if (!nmp) {
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size,
UPL_ABORT_ERROR | UPL_ABORT_FREE_ON_EMPTY);
return (ENXIO);
}
nmrsize = nmp->nm_rsize;
plinfo = ubc_upl_pageinfo(pl);
kret = ubc_upl_map(pl, &ioaddr);
if (kret != KERN_SUCCESS)
panic("nfs_vnop_pagein: ubc_upl_map() failed with (%d)", kret);
ioaddr += pl_offset;
tryagain:
if (nmp->nm_vers >= NFS_VER4)
stategenid = nmp->nm_stategenid;
txsize = rxsize = size;
txoffset = f_offset;
rxaddr = ioaddr;
bzero(req, sizeof(req));
nextsend = nextwait = 0;
do {
if (np->n_flag & NREVOKE) {
error = EIO;
break;
}
while ((txsize > 0) && (req[nextsend] == NULL)) {
iosize = MIN(nmrsize, txsize);
if ((error = nmp->nm_funcs->nf_read_rpc_async(np, txoffset, iosize, thd, cred, NULL, &req[nextsend]))) {
req[nextsend] = NULL;
break;
}
txoffset += iosize;
txsize -= iosize;
nextsend = (nextsend + 1) % MAXPAGINGREQS;
}
while ((rxsize > 0) && req[nextwait]) {
iosize = retsize = MIN(nmrsize, rxsize);
uio_reset(uio, uio_offset(uio), UIO_SYSSPACE, UIO_READ);
uio_addiov(uio, CAST_USER_ADDR_T(rxaddr), iosize);
FSDBG(322, uio_offset(uio), uio_resid(uio), rxaddr, rxsize);
#if UPL_DEBUG
upl_ubc_alias_set(pl, (uintptr_t) current_thread(), (uintptr_t) 2);
#endif
OSAddAtomic64(1, &nfsstats.pageins);
error = nmp->nm_funcs->nf_read_rpc_async_finish(np, req[nextwait], uio, &retsize, NULL);
req[nextwait] = NULL;
nextwait = (nextwait + 1) % MAXPAGINGREQS;
if ((nmp->nm_vers >= NFS_VER4) && nfs_mount_state_error_should_restart(error)) {
lck_mtx_lock(&nmp->nm_lock);
if ((error != NFSERR_GRACE) && (stategenid == nmp->nm_stategenid)) {
NP(np, "nfs_vnop_pagein: error %d, initiating recovery", error);
nfs_need_recover(nmp, error);
}
lck_mtx_unlock(&nmp->nm_lock);
restart++;
goto cancel;
}
if (error) {
FSDBG(322, uio_offset(uio), uio_resid(uio), error, -1);
break;
}
if (retsize < iosize) {
int zcnt = iosize - retsize;
bzero((char *)rxaddr + retsize, zcnt);
FSDBG(324, uio_offset(uio), retsize, zcnt, rxaddr);
uio_update(uio, zcnt);
}
rxaddr += iosize;
rxsize -= iosize;
if (txsize)
break;
}
} while (!error && (txsize || rxsize));
restart = 0;
if (error) {
cancel:
while (req[nextwait]) {
nfs_request_async_cancel(req[nextwait]);
req[nextwait] = NULL;
nextwait = (nextwait + 1) % MAXPAGINGREQS;
}
if (np->n_flag & NREVOKE) {
error = EIO;
} else if (restart) {
if (restart <= nfs_mount_state_max_restarts(nmp)) {
if (error == NFSERR_GRACE)
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
if (!(error = nfs_mount_state_wait_for_recovery(nmp)))
goto tryagain;
} else {
NP(np, "nfs_pagein: too many restarts, aborting");
}
}
}
ubc_upl_unmap(pl);
if (!nofreeupl) {
if (error)
ubc_upl_abort_range(pl, pl_offset, size,
UPL_ABORT_ERROR |
UPL_ABORT_FREE_ON_EMPTY);
else
ubc_upl_commit_range(pl, pl_offset, size,
UPL_COMMIT_CLEAR_DIRTY |
UPL_COMMIT_FREE_ON_EMPTY);
}
return (error);
}
char nfs_pageouterrorhandler(int);
enum actiontype {NOACTION, DUMP, DUMPANDLOG, RETRY, RETRYWITHSLEEP, SEVER};
#define NFS_ELAST 88
static u_char errorcount[NFS_ELAST+1];
static const char errortooutcome[NFS_ELAST+1] = {
NOACTION,
DUMP,
DUMP,
DUMPANDLOG,
RETRY,
DUMP,
DUMP,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
RETRY,
DUMP,
DUMPANDLOG,
DUMPANDLOG,
RETRY,
DUMP,
DUMP,
DUMP,
DUMP,
DUMP,
DUMP,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMP,
DUMP,
DUMPANDLOG,
DUMP,
DUMP,
RETRY,
DUMPANDLOG,
DUMPANDLOG,
RETRY,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
RETRY,
DUMPANDLOG,
DUMP,
RETRY,
RETRY,
DUMP,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMP,
DUMP,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
DUMPANDLOG,
};
char
nfs_pageouterrorhandler(int error)
{
if (error > NFS_ELAST)
return(DUMP);
else
return(errortooutcome[error]);
}
int
nfs_vnop_pageout(
struct vnop_pageout_args *ap)
{
vnode_t vp = ap->a_vp;
upl_t pl = ap->a_pl;
size_t size = ap->a_size;
off_t f_offset = ap->a_f_offset;
vm_offset_t pl_offset = ap->a_pl_offset;
int flags = ap->a_flags;
nfsnode_t np = VTONFS(vp);
thread_t thd;
kauth_cred_t cred;
struct nfsbuf *bp;
struct nfsmount *nmp = VTONMP(vp);
daddr64_t lbn;
int error = 0, iomode;
off_t off, txoffset, rxoffset;
vm_offset_t ioaddr, txaddr, rxaddr;
uio_t auio;
char uio_buf [ UIO_SIZEOF(1) ];
int nofreeupl = flags & UPL_NOCOMMIT;
size_t nmwsize, biosize, iosize, pgsize, txsize, rxsize, xsize, remsize;
struct nfsreq *req[MAXPAGINGREQS];
int nextsend, nextwait, wverfset, commit;
uint64_t wverf, wverf2;
uint32_t stategenid = 0, vrestart = 0, restart = 0, vrestarts = 0, restarts = 0;
kern_return_t kret;
FSDBG(323, f_offset, size, pl, pl_offset);
if (pl == (upl_t)NULL)
panic("nfs_pageout: no upl");
if (size <= 0) {
printf("nfs_pageout: invalid size %ld", size);
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size, 0);
return (EINVAL);
}
if (!nmp) {
if (!nofreeupl)
ubc_upl_abort(pl, UPL_ABORT_DUMP_PAGES|UPL_ABORT_FREE_ON_EMPTY);
return (ENXIO);
}
biosize = nmp->nm_biosize;
nmwsize = nmp->nm_wsize;
nfs_data_lock_noupdate(np, NFS_DATA_LOCK_SHARED);
for (iosize = 0; iosize < size; iosize += xsize) {
off = f_offset + iosize;
xsize = biosize - (off % biosize);
if (off + xsize > f_offset + size)
xsize = f_offset + size - off;
lbn = (daddr64_t)(off / biosize);
lck_mtx_lock(nfs_buf_mutex);
if ((bp = nfs_buf_incore(np, lbn))) {
FSDBG(323, off, bp, bp->nb_lflags, bp->nb_flags);
if (nfs_buf_acquire(bp, NBAC_NOWAIT, 0, 0)) {
lck_mtx_unlock(nfs_buf_mutex);
nfs_data_unlock_noupdate(np);
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size, 0);
return (EBUSY);
}
if (bp->nb_dirtyend > 0) {
off_t boff, start, end;
boff = NBOFF(bp);
start = off;
end = off + xsize;
if (end > (off_t)np->n_size)
end = np->n_size;
start -= boff;
end -= boff;
if ((bp->nb_dirtyoff < start) &&
(bp->nb_dirtyend > end)) {
FSDBG(323, np, bp, 0xd00deebc, EBUSY);
nfs_buf_remfree(bp);
TAILQ_INSERT_HEAD(&nfsbufdelwri, bp, nb_free);
nfsbufdelwricnt++;
nfs_buf_drop(bp);
nfs_buf_delwri_push(1);
lck_mtx_unlock(nfs_buf_mutex);
nfs_data_unlock_noupdate(np);
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size, 0);
return (EBUSY);
}
if ((bp->nb_dirtyoff < start) ||
(bp->nb_dirtyend > end)) {
if (bp->nb_dirtyoff < start)
bp->nb_dirtyend = min(bp->nb_dirtyend, start);
if (bp->nb_dirtyend > end)
bp->nb_dirtyoff = max(bp->nb_dirtyoff, end);
FSDBG(323, bp, bp->nb_dirtyoff, bp->nb_dirtyend, 0xd00dee00);
nfs_buf_drop(bp);
lck_mtx_unlock(nfs_buf_mutex);
continue;
}
}
nfs_buf_remfree(bp);
lck_mtx_unlock(nfs_buf_mutex);
SET(bp->nb_flags, NB_INVAL);
nfs_node_lock_force(np);
if (ISSET(bp->nb_flags, NB_NEEDCOMMIT)) {
CLR(bp->nb_flags, NB_NEEDCOMMIT);
np->n_needcommitcnt--;
CHECK_NEEDCOMMITCNT(np);
}
nfs_node_unlock(np);
nfs_buf_release(bp, 1);
} else {
lck_mtx_unlock(nfs_buf_mutex);
}
}
thd = vfs_context_thread(ap->a_context);
cred = ubc_getcred(vp);
if (!IS_VALID_CRED(cred))
cred = vfs_context_ucred(ap->a_context);
nfs_node_lock_force(np);
if (np->n_flag & NWRITEERR) {
error = np->n_error;
nfs_node_unlock(np);
nfs_data_unlock_noupdate(np);
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size,
UPL_ABORT_FREE_ON_EMPTY);
return (error);
}
nfs_node_unlock(np);
if (f_offset < 0 || f_offset >= (off_t)np->n_size ||
f_offset & PAGE_MASK_64 || size & PAGE_MASK_64) {
nfs_data_unlock_noupdate(np);
if (!nofreeupl)
ubc_upl_abort_range(pl, pl_offset, size,
UPL_ABORT_FREE_ON_EMPTY);
return (EINVAL);
}
kret = ubc_upl_map(pl, &ioaddr);
if (kret != KERN_SUCCESS)
panic("nfs_vnop_pageout: ubc_upl_map() failed with (%d)", kret);
ioaddr += pl_offset;
if ((u_quad_t)f_offset + size > np->n_size)
xsize = np->n_size - f_offset;
else
xsize = size;
pgsize = round_page_64(xsize);
if ((size > pgsize) && !nofreeupl)
ubc_upl_abort_range(pl, pl_offset + pgsize, size - pgsize,
UPL_ABORT_FREE_ON_EMPTY);
if ((u_quad_t)f_offset < np->n_size && (u_quad_t)f_offset + size > np->n_size) {
size_t io = np->n_size - f_offset;
bzero((caddr_t)(ioaddr + io), size - io);
FSDBG(321, np->n_size, f_offset, f_offset + io, size - io);
}
nfs_data_unlock_noupdate(np);
auio = uio_createwithbuffer(1, 0, UIO_SYSSPACE, UIO_WRITE,
&uio_buf, sizeof(uio_buf));
tryagain:
if (nmp->nm_vers >= NFS_VER4)
stategenid = nmp->nm_stategenid;
wverf = wverf2 = wverfset = 0;
txsize = rxsize = xsize;
txoffset = rxoffset = f_offset;
txaddr = rxaddr = ioaddr;
commit = NFS_WRITE_FILESYNC;
bzero(req, sizeof(req));
nextsend = nextwait = 0;
do {
if (np->n_flag & NREVOKE) {
error = EIO;
break;
}
while ((txsize > 0) && (req[nextsend] == NULL)) {
iosize = MIN(nmwsize, txsize);
uio_reset(auio, txoffset, UIO_SYSSPACE, UIO_WRITE);
uio_addiov(auio, CAST_USER_ADDR_T(txaddr), iosize);
FSDBG(323, uio_offset(auio), iosize, txaddr, txsize);
OSAddAtomic64(1, &nfsstats.pageouts);
nfs_node_lock_force(np);
np->n_numoutput++;
nfs_node_unlock(np);
vnode_startwrite(vp);
iomode = NFS_WRITE_UNSTABLE;
if ((error = nmp->nm_funcs->nf_write_rpc_async(np, auio, iosize, thd, cred, iomode, NULL, &req[nextsend]))) {
req[nextsend] = NULL;
vnode_writedone(vp);
nfs_node_lock_force(np);
np->n_numoutput--;
nfs_node_unlock(np);
break;
}
txaddr += iosize;
txoffset += iosize;
txsize -= iosize;
nextsend = (nextsend + 1) % MAXPAGINGREQS;
}
while ((rxsize > 0) && req[nextwait]) {
iosize = remsize = MIN(nmwsize, rxsize);
error = nmp->nm_funcs->nf_write_rpc_async_finish(np, req[nextwait], &iomode, &iosize, &wverf2);
req[nextwait] = NULL;
nextwait = (nextwait + 1) % MAXPAGINGREQS;
vnode_writedone(vp);
nfs_node_lock_force(np);
np->n_numoutput--;
nfs_node_unlock(np);
if ((nmp->nm_vers >= NFS_VER4) && nfs_mount_state_error_should_restart(error)) {
lck_mtx_lock(&nmp->nm_lock);
if ((error != NFSERR_GRACE) && (stategenid == nmp->nm_stategenid)) {
NP(np, "nfs_vnop_pageout: error %d, initiating recovery", error);
nfs_need_recover(nmp, error);
}
lck_mtx_unlock(&nmp->nm_lock);
restart = 1;
goto cancel;
}
if (error) {
FSDBG(323, rxoffset, rxsize, error, -1);
break;
}
if (!wverfset) {
wverf = wverf2;
wverfset = 1;
} else if (wverf != wverf2) {
vrestart = 1;
goto cancel;
}
if (iomode < commit)
commit = iomode;
rxaddr += iosize;
rxoffset += iosize;
rxsize -= iosize;
remsize -= iosize;
if (remsize > 0) {
iosize = remsize;
uio_reset(auio, rxoffset, UIO_SYSSPACE, UIO_WRITE);
uio_addiov(auio, CAST_USER_ADDR_T(rxaddr), remsize);
iomode = NFS_WRITE_UNSTABLE;
error = nfs_write_rpc2(np, auio, thd, cred, &iomode, &wverf2);
if ((nmp->nm_vers >= NFS_VER4) && nfs_mount_state_error_should_restart(error)) {
NP(np, "nfs_vnop_pageout: restart: error %d", error);
lck_mtx_lock(&nmp->nm_lock);
if ((error != NFSERR_GRACE) && (stategenid == nmp->nm_stategenid)) {
NP(np, "nfs_vnop_pageout: error %d, initiating recovery", error);
nfs_need_recover(nmp, error);
}
lck_mtx_unlock(&nmp->nm_lock);
restart = 1;
goto cancel;
}
if (error) {
FSDBG(323, rxoffset, rxsize, error, -1);
break;
}
if (wverf != wverf2) {
vrestart = 1;
goto cancel;
}
if (iomode < commit)
commit = iomode;
rxaddr += iosize;
rxoffset += iosize;
rxsize -= iosize;
}
if (txsize)
break;
}
} while (!error && (txsize || rxsize));
vrestart = 0;
if (!error && (commit != NFS_WRITE_FILESYNC)) {
error = nmp->nm_funcs->nf_commit_rpc(np, f_offset, xsize, cred, wverf);
if (error == NFSERR_STALEWRITEVERF) {
vrestart = 1;
error = EIO;
}
}
if (error) {
cancel:
while (req[nextwait]) {
nfs_request_async_cancel(req[nextwait]);
req[nextwait] = NULL;
nextwait = (nextwait + 1) % MAXPAGINGREQS;
vnode_writedone(vp);
nfs_node_lock_force(np);
np->n_numoutput--;
nfs_node_unlock(np);
}
if (np->n_flag & NREVOKE) {
error = EIO;
} else {
if (vrestart) {
if (++vrestarts <= 100)
goto tryagain;
NP(np, "nfs_pageout: too many restarts, aborting");
FSDBG(323, f_offset, xsize, ERESTART, -1);
}
if (restart) {
if (restarts <= nfs_mount_state_max_restarts(nmp)) {
if (error == NFSERR_GRACE)
tsleep(&nmp->nm_state, (PZERO-1), "nfsgrace", 2*hz);
if (!(error = nfs_mount_state_wait_for_recovery(nmp)))
goto tryagain;
} else {
NP(np, "nfs_pageout: too many restarts, aborting");
FSDBG(323, f_offset, xsize, ERESTART, -1);
}
}
}
}
ubc_upl_unmap(pl);
if (!nofreeupl) {
if (error) {
int abortflags = 0;
char action = nfs_pageouterrorhandler(error);
switch (action) {
case DUMP:
abortflags = UPL_ABORT_DUMP_PAGES|UPL_ABORT_FREE_ON_EMPTY;
break;
case DUMPANDLOG:
abortflags = UPL_ABORT_DUMP_PAGES|UPL_ABORT_FREE_ON_EMPTY;
if (error <= NFS_ELAST) {
if ((errorcount[error] % 100) == 0)
NP(np, "nfs_pageout: unexpected error %d. dumping vm page", error);
errorcount[error]++;
}
break;
case RETRY:
abortflags = UPL_ABORT_FREE_ON_EMPTY;
break;
case RETRYWITHSLEEP:
abortflags = UPL_ABORT_FREE_ON_EMPTY;
tsleep(&lbolt, PSOCK, "nfspageout", 0);
break;
case SEVER:
default:
NP(np, "nfs_pageout: action %d not expected", action);
break;
}
ubc_upl_abort_range(pl, pl_offset, pgsize, abortflags);
} else {
ubc_upl_commit_range(pl, pl_offset, pgsize,
UPL_COMMIT_CLEAR_DIRTY |
UPL_COMMIT_FREE_ON_EMPTY);
}
}
return (error);
}
int
nfs_vnop_blktooff(
struct vnop_blktooff_args *ap)
{
int biosize;
vnode_t vp = ap->a_vp;
struct nfsmount *nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
biosize = nmp->nm_biosize;
*ap->a_offset = (off_t)(ap->a_lblkno * biosize);
return (0);
}
int
nfs_vnop_offtoblk(
struct vnop_offtoblk_args *ap)
{
int biosize;
vnode_t vp = ap->a_vp;
struct nfsmount *nmp = VTONMP(vp);
if (!nmp)
return (ENXIO);
biosize = nmp->nm_biosize;
*ap->a_lblkno = (daddr64_t)(ap->a_offset / biosize);
return (0);
}
int
nfs_vnop_monitor(
struct vnop_monitor_args *ap)
{
nfsnode_t np = VTONFS(ap->a_vp);
struct nfsmount *nmp = VTONMP(ap->a_vp);
int error = 0;
if (!nmp)
return (ENXIO);
lck_mtx_lock(&nmp->nm_lock);
if (vnode_ismonitored(ap->a_vp)) {
if (np->n_monlink.le_next == NFSNOLIST) {
LIST_INSERT_HEAD(&nmp->nm_monlist, np, n_monlink);
nfs_mount_sock_thread_wake(nmp);
}
} else {
while (np->n_mflag & NMMONSCANINPROG) {
struct timespec ts = { 1, 0 };
np->n_mflag |= NMMONSCANWANT;
msleep(&np->n_mflag, &nmp->nm_lock, PZERO-1, "nfswaitmonscan", &ts);
}
if (np->n_monlink.le_next != NFSNOLIST) {
LIST_REMOVE(np, n_monlink);
np->n_monlink.le_next = NFSNOLIST;
}
}
lck_mtx_unlock(&nmp->nm_lock);
return (error);
}
void
nfs_vnode_notify(nfsnode_t np, uint32_t events)
{
struct nfsmount *nmp = NFSTONMP(np);
struct nfs_vattr nvattr;
struct vnode_attr vattr, *vap = NULL;
struct timeval now;
microuptime(&now);
if ((np->n_evtstamp == now.tv_sec) || !nmp) {
np->n_events |= events;
return;
}
events |= np->n_events;
np->n_events = 0;
np->n_evtstamp = now.tv_sec;
vfs_get_notify_attributes(&vattr);
if (!nfs_getattrcache(np, &nvattr, 0)) {
vap = &vattr;
VATTR_INIT(vap);
VATTR_RETURN(vap, va_fsid, vfs_statfs(nmp->nm_mountp)->f_fsid.val[0]);
VATTR_RETURN(vap, va_fileid, nvattr.nva_fileid);
VATTR_RETURN(vap, va_mode, nvattr.nva_mode);
VATTR_RETURN(vap, va_uid, nvattr.nva_uid);
VATTR_RETURN(vap, va_gid, nvattr.nva_gid);
VATTR_RETURN(vap, va_nlink, nvattr.nva_nlink);
}
vnode_notify(NFSTOV(np), events, vap);
}