mutex_enter(&os->os_user_ptr_lock);
*zsbp = dmu_objset_get_user(os);
- if (*zsbp) {
- mntget((*zsbp)->z_vfs);
+ if (*zsbp && (*zsbp)->z_sb) {
+ if (atomic_inc_not_zero(&((*zsbp)->z_sb->s_active)))
+ error = ESRCH;
} else {
error = ESRCH;
}
/*
* Find a zfs_sb_t for a mounted filesystem, or create our own, in which
- * case its z_vfs will be NULL, and it will be opened as the owner.
+ * case its z_sb will be NULL, and it will be opened as the owner.
*/
static int
zfs_sb_hold(const char *name, void *tag, zfs_sb_t **zsbp, boolean_t writer)
{
rrw_exit(&zsb->z_teardown_lock, tag);
- if (zsb->z_vfs) {
- mntput(zsb->z_vfs);
+ if (zsb->z_sb) {
+ deactivate_super(zsb->z_sb);
} else {
dmu_objset_disown(zsb->z_os, zsb);
zfs_sb_free(zsb);
return (ENOTSUP);
}
- hist_buf = kmem_alloc(size, KM_SLEEP);
+ hist_buf = vmem_alloc(size, KM_SLEEP);
if ((error = spa_history_get(spa, &zc->zc_history_offset,
&zc->zc_history_len, hist_buf)) == 0) {
error = ddi_copyout(hist_buf,
}
spa_close(spa, FTAG);
- kmem_free(hist_buf, size);
+ vmem_free(hist_buf, size);
return (error);
}
resume_err = zfs_resume_fs(zsb, zc->zc_name);
error = error ? error : resume_err;
}
- mntput(zsb->z_vfs);
+ deactivate_super(zsb->z_sb);
} else {
if (dsl_dataset_tryown(ds, B_FALSE, FTAG)) {
error = dsl_dataset_clone_swap(clone, ds, B_TRUE);
VERIFY(nvlist_alloc(&errors, NV_UNIQUE_NAME, KM_SLEEP) == 0);
- zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP);
+ zc = kmem_alloc(sizeof (zfs_cmd_t), KM_SLEEP | KM_NODEBUG);
(void) strcpy(zc->zc_name, dataset);
pair = nvlist_next_nvpair(props, NULL);
while (pair != NULL) {
if (error == 0)
error = zfs_resume_fs(zsb, tofs);
error = error ? error : end_err;
- mntput(zsb->z_vfs);
+ deactivate_super(zsb->z_sb);
} else {
error = dmu_recv_end(&drc);
}
if (error)
return (error);
- buf = kmem_alloc(bufsize, KM_SLEEP);
+ buf = vmem_alloc(bufsize, KM_SLEEP);
error = zfs_userspace_many(zsb, zc->zc_objset_type, &zc->zc_cookie,
buf, &zc->zc_nvlist_dst_size);
(void *)(uintptr_t)zc->zc_nvlist_dst,
zc->zc_nvlist_dst_size);
}
- kmem_free(buf, bufsize);
+ vmem_free(buf, bufsize);
zfs_sb_rele(zsb, FTAG);
return (error);
}
if (error == 0)
error = dmu_objset_userspace_upgrade(zsb->z_os);
- mntput(zsb->z_vfs);
+ deactivate_super(zsb->z_sb);
} else {
/* XXX kind of reading contents without owning */
error = dmu_objset_hold(zc->zc_name, FTAG, &os);
return (error);
}
-/*
- * We don't want to have a hard dependency
- * against some special symbols in sharefs
- * nfs, and smbsrv. Determine them if needed when
- * the first file system is shared.
- * Neither sharefs, nfs or smbsrv are unloadable modules.
- */
-#ifdef HAVE_SHARE
-int (*znfsexport_fs)(void *arg);
-int (*zshare_fs)(enum sharefs_sys_op, share_t *, uint32_t);
-int (*zsmbexport_fs)(void *arg, boolean_t add_share);
-
-int zfs_nfsshare_inited;
-int zfs_smbshare_inited;
-
-ddi_modhandle_t nfs_mod;
-ddi_modhandle_t sharefs_mod;
-ddi_modhandle_t smbsrv_mod;
-kmutex_t zfs_share_lock;
-
-static int
-zfs_init_sharefs()
-{
- int error;
-
- ASSERT(MUTEX_HELD(&zfs_share_lock));
- /* Both NFS and SMB shares also require sharetab support. */
- if (sharefs_mod == NULL && ((sharefs_mod =
- ddi_modopen("fs/sharefs",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- return (ENOSYS);
- }
- if (zshare_fs == NULL && ((zshare_fs =
- (int (*)(enum sharefs_sys_op, share_t *, uint32_t))
- ddi_modsym(sharefs_mod, "sharefs_impl", &error)) == NULL)) {
- return (ENOSYS);
- }
- return (0);
-}
-#endif /* HAVE_SHARE */
-
static int
zfs_ioc_share(zfs_cmd_t *zc)
{
-#ifdef HAVE_SHARE
- int error;
- int opcode;
-
- switch (zc->zc_share.z_sharetype) {
- case ZFS_SHARE_NFS:
- case ZFS_UNSHARE_NFS:
- if (zfs_nfsshare_inited == 0) {
- mutex_enter(&zfs_share_lock);
- if (nfs_mod == NULL && ((nfs_mod = ddi_modopen("fs/nfs",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- if (znfsexport_fs == NULL &&
- ((znfsexport_fs = (int (*)(void *))
- ddi_modsym(nfs_mod,
- "nfs_export", &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- error = zfs_init_sharefs();
- if (error) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- zfs_nfsshare_inited = 1;
- mutex_exit(&zfs_share_lock);
- }
- break;
- case ZFS_SHARE_SMB:
- case ZFS_UNSHARE_SMB:
- if (zfs_smbshare_inited == 0) {
- mutex_enter(&zfs_share_lock);
- if (smbsrv_mod == NULL && ((smbsrv_mod =
- ddi_modopen("drv/smbsrv",
- KRTLD_MODE_FIRST, &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- if (zsmbexport_fs == NULL && ((zsmbexport_fs =
- (int (*)(void *, boolean_t))ddi_modsym(smbsrv_mod,
- "smb_server_share", &error)) == NULL)) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- error = zfs_init_sharefs();
- if (error) {
- mutex_exit(&zfs_share_lock);
- return (ENOSYS);
- }
- zfs_smbshare_inited = 1;
- mutex_exit(&zfs_share_lock);
- }
- break;
- default:
- return (EINVAL);
- }
-
- switch (zc->zc_share.z_sharetype) {
- case ZFS_SHARE_NFS:
- case ZFS_UNSHARE_NFS:
- if (error =
- znfsexport_fs((void *)
- (uintptr_t)zc->zc_share.z_exportdata))
- return (error);
- break;
- case ZFS_SHARE_SMB:
- case ZFS_UNSHARE_SMB:
- if (error = zsmbexport_fs((void *)
- (uintptr_t)zc->zc_share.z_exportdata,
- zc->zc_share.z_sharetype == ZFS_SHARE_SMB ?
- B_TRUE: B_FALSE)) {
- return (error);
- }
- break;
- }
-
- opcode = (zc->zc_share.z_sharetype == ZFS_SHARE_NFS ||
- zc->zc_share.z_sharetype == ZFS_SHARE_SMB) ?
- SHAREFS_ADD : SHAREFS_REMOVE;
-
- /*
- * Add or remove share from sharetab
- */
- error = zshare_fs(opcode,
- (void *)(uintptr_t)zc->zc_share.z_sharedata,
- zc->zc_share.z_sharemax);
-
- return (error);
-#else
- return (ENOTSUP);
-#endif /* HAVE_SHARE */
+ return (ENOSYS);
}
ace_t full_access[] = {
error = EFAULT;
if ((error == 0) && !(flag & FKIOCTL))
- error = zfs_ioc_vec[vec].zvec_secpolicy(zc, NULL);
+ error = zfs_ioc_vec[vec].zvec_secpolicy(zc, CRED());
/*
* Ensure that all pool/dataset names are valid before we pass down to
tsd_create(&zfs_fsyncer_key, NULL);
tsd_create(&rrw_tsd_key, NULL);
-#ifdef HAVE_SHARE
- mutex_init(&zfs_share_lock, NULL, MUTEX_DEFAULT, NULL);
-#endif /* HAVE_SHARE */
-
- printk(KERN_NOTICE "ZFS: Loaded ZFS Filesystem v%s%s\n",
- ZFS_META_VERSION, ZFS_DEBUG_STR);
+ printk(KERN_NOTICE "ZFS: Loaded module v%s%s, "
+ "ZFS pool version %s, ZFS filesystem version %s\n",
+ ZFS_META_VERSION, ZFS_DEBUG_STR,
+ SPA_VERSION_STRING, ZPL_VERSION_STRING);
return (0);
zvol_fini();
zfs_fini();
spa_fini();
-#ifdef HAVE_SHARE
- if (zfs_nfsshare_inited)
- (void) ddi_modclose(nfs_mod);
- if (zfs_smbshare_inited)
- (void) ddi_modclose(smbsrv_mod);
- if (zfs_nfsshare_inited || zfs_smbshare_inited)
- (void) ddi_modclose(sharefs_mod);
-
- mutex_destroy(&zfs_share_lock);
-#endif /* HAVE_SHARE */
+
tsd_destroy(&zfs_fsyncer_key);
tsd_destroy(&rrw_tsd_key);
- printk(KERN_NOTICE "ZFS: Unloaded ZFS Filesystem v%s%s\n",
+ printk(KERN_NOTICE "ZFS: Unloaded module v%s%s\n",
ZFS_META_VERSION, ZFS_DEBUG_STR);
return (0);
git://git.camperquake.de / zfs.git / blobdiff