#include <sys/cmn_err.h>
#include "fs/fs_subr.h"
#include <sys/zfs_znode.h>
+#include <sys/zfs_vnops.h>
#include <sys/zfs_dir.h>
#include <sys/zil.h>
#include <sys/fs/zfs.h>
#include <sys/spa.h>
#include <sys/zap.h>
#include <sys/sa.h>
+#include <sys/sa_impl.h>
#include <sys/varargs.h>
#include <sys/policy.h>
#include <sys/atomic.h>
#include <sys/dnlc.h>
#include <sys/dmu_objset.h>
#include <sys/spa_boot.h>
-#include <sys/sa.h>
+#include <sys/zpl.h>
#include "zfs_comutil.h"
-#ifdef HAVE_ZPL
/*ARGSUSED*/
int
-zfs_sync(vfs_t *vfsp, short flag, cred_t *cr)
+zfs_sync(struct super_block *sb, int wait, cred_t *cr)
{
+ zfs_sb_t *zsb = sb->s_fs_info;
+
/*
* Data integrity is job one. We don't want a compromised kernel
* writing to the storage pool, so we never sync during panic.
*/
- if (panicstr)
+ if (unlikely(oops_in_progress))
+ return (0);
+
+ /*
+ * Semantically, the only requirement is that the sync be initiated.
+ * The DMU syncs out txgs frequently, so there's nothing to do.
+ */
+ if (!wait)
return (0);
- if (vfsp != NULL) {
+ if (zsb != NULL) {
/*
* Sync a specific filesystem.
*/
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
dsl_pool_t *dp;
- ZFS_ENTER(zfsvfs);
- dp = dmu_objset_pool(zfsvfs->z_os);
+ ZFS_ENTER(zsb);
+ dp = dmu_objset_pool(zsb->z_os);
-#ifdef HAVE_SHUTDOWN
/*
* If the system is shutting down, then skip any
* filesystems which may exist on a suspended pool.
- *
- * XXX: This can be implemented using the Linux reboot
- * notifiers: {un}register_reboot_notifier().
*/
- if (sys_shutdown && spa_suspended(dp->dp_spa)) {
- ZFS_EXIT(zfsvfs);
+ if (spa_suspended(dp->dp_spa)) {
+ ZFS_EXIT(zsb);
return (0);
}
-#endif /* HAVE_SHUTDOWN */
- if (zfsvfs->z_log != NULL)
- zil_commit(zfsvfs->z_log, 0);
+ if (zsb->z_log != NULL)
+ zil_commit(zsb->z_log, 0);
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
} else {
/*
* Sync all ZFS filesystems. This is what happens when you
}
EXPORT_SYMBOL(zfs_sync);
+boolean_t
+zfs_is_readonly(zfs_sb_t *zsb)
+{
+ return (!!(zsb->z_sb->s_flags & MS_RDONLY));
+}
+EXPORT_SYMBOL(zfs_is_readonly);
+
static void
atime_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- if (newval == TRUE) {
- zfsvfs->z_atime = TRUE;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NOATIME);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_ATIME, NULL, 0);
- } else {
- zfsvfs->z_atime = FALSE;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_ATIME);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NOATIME, NULL, 0);
- }
+ ((zfs_sb_t *)arg)->z_atime = newval;
}
static void
xattr_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
+ zfs_sb_t *zsb = arg;
- if (newval == TRUE) {
- /* XXX locking on vfs_flag? */
- zfsvfs->z_vfs->vfs_flag |= VFS_XATTR;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NOXATTR);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_XATTR, NULL, 0);
+ if (newval == ZFS_XATTR_OFF) {
+ zsb->z_flags &= ~ZSB_XATTR;
} else {
- /* XXX locking on vfs_flag? */
- zfsvfs->z_vfs->vfs_flag &= ~VFS_XATTR;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_XATTR);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NOXATTR, NULL, 0);
+ zsb->z_flags |= ZSB_XATTR;
+
+ if (newval == ZFS_XATTR_SA)
+ zsb->z_xattr_sa = B_TRUE;
+ else
+ zsb->z_xattr_sa = B_FALSE;
}
}
static void
blksz_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
+ zfs_sb_t *zsb = arg;
if (newval < SPA_MINBLOCKSIZE ||
newval > SPA_MAXBLOCKSIZE || !ISP2(newval))
newval = SPA_MAXBLOCKSIZE;
- zfsvfs->z_max_blksz = newval;
- zfsvfs->z_vfs->vfs_bsize = newval;
+ zsb->z_max_blksz = newval;
}
static void
readonly_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
+ zfs_sb_t *zsb = arg;
+ struct super_block *sb = zsb->z_sb;
- if (newval) {
- /* XXX locking on vfs_flag? */
- zfsvfs->z_vfs->vfs_flag |= VFS_RDONLY;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_RW);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_RO, NULL, 0);
- } else {
- /* XXX locking on vfs_flag? */
- zfsvfs->z_vfs->vfs_flag &= ~VFS_RDONLY;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_RO);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_RW, NULL, 0);
- }
+ if (sb == NULL)
+ return;
+
+ if (newval)
+ sb->s_flags |= MS_RDONLY;
+ else
+ sb->s_flags &= ~MS_RDONLY;
}
static void
devices_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- if (newval == FALSE) {
- zfsvfs->z_vfs->vfs_flag |= VFS_NODEVICES;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_DEVICES);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NODEVICES, NULL, 0);
- } else {
- zfsvfs->z_vfs->vfs_flag &= ~VFS_NODEVICES;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NODEVICES);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_DEVICES, NULL, 0);
- }
}
static void
setuid_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- if (newval == FALSE) {
- zfsvfs->z_vfs->vfs_flag |= VFS_NOSETUID;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_SETUID);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NOSETUID, NULL, 0);
- } else {
- zfsvfs->z_vfs->vfs_flag &= ~VFS_NOSETUID;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NOSETUID);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_SETUID, NULL, 0);
- }
}
static void
exec_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- if (newval == FALSE) {
- zfsvfs->z_vfs->vfs_flag |= VFS_NOEXEC;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_EXEC);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NOEXEC, NULL, 0);
- } else {
- zfsvfs->z_vfs->vfs_flag &= ~VFS_NOEXEC;
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NOEXEC);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_EXEC, NULL, 0);
- }
}
-/*
- * The nbmand mount option can be changed at mount time.
- * We can't allow it to be toggled on live file systems or incorrect
- * behavior may be seen from cifs clients
- *
- * This property isn't registered via dsl_prop_register(), but this callback
- * will be called when a file system is first mounted
- */
static void
nbmand_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
- if (newval == FALSE) {
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NBMAND);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NONBMAND, NULL, 0);
- } else {
- vfs_clearmntopt(zfsvfs->z_vfs, MNTOPT_NONBMAND);
- vfs_setmntopt(zfsvfs->z_vfs, MNTOPT_NBMAND, NULL, 0);
- }
+ zfs_sb_t *zsb = arg;
+ struct super_block *sb = zsb->z_sb;
+
+ if (sb == NULL)
+ return;
+
+ if (newval == TRUE)
+ sb->s_flags |= MS_MANDLOCK;
+ else
+ sb->s_flags &= ~MS_MANDLOCK;
}
static void
snapdir_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- zfsvfs->z_show_ctldir = newval;
+ ((zfs_sb_t *)arg)->z_show_ctldir = newval;
}
static void
vscan_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- zfsvfs->z_vscan = newval;
+ ((zfs_sb_t *)arg)->z_vscan = newval;
}
static void
acl_inherit_changed_cb(void *arg, uint64_t newval)
{
- zfsvfs_t *zfsvfs = arg;
-
- zfsvfs->z_acl_inherit = newval;
+ ((zfs_sb_t *)arg)->z_acl_inherit = newval;
}
int
-zfs_register_callbacks(vfs_t *vfsp)
+zfs_register_callbacks(zfs_sb_t *zsb)
{
struct dsl_dataset *ds = NULL;
- objset_t *os = NULL;
- zfsvfs_t *zfsvfs = NULL;
- uint64_t nbmand;
- int readonly, do_readonly = B_FALSE;
- int setuid, do_setuid = B_FALSE;
- int exec, do_exec = B_FALSE;
- int devices, do_devices = B_FALSE;
- int xattr, do_xattr = B_FALSE;
- int atime, do_atime = B_FALSE;
+ objset_t *os = zsb->z_os;
+ boolean_t do_readonly = B_FALSE;
int error = 0;
- ASSERT(vfsp);
- zfsvfs = vfsp->vfs_data;
- ASSERT(zfsvfs);
- os = zfsvfs->z_os;
-
- /*
- * The act of registering our callbacks will destroy any mount
- * options we may have. In order to enable temporary overrides
- * of mount options, we stash away the current values and
- * restore them after we register the callbacks.
- */
- if (vfs_optionisset(vfsp, MNTOPT_RO, NULL) ||
- !spa_writeable(dmu_objset_spa(os))) {
- readonly = B_TRUE;
- do_readonly = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_RW, NULL)) {
- readonly = B_FALSE;
+ if (zfs_is_readonly(zsb) || !spa_writeable(dmu_objset_spa(os)))
do_readonly = B_TRUE;
- }
- if (vfs_optionisset(vfsp, MNTOPT_NOSUID, NULL)) {
- devices = B_FALSE;
- setuid = B_FALSE;
- do_devices = B_TRUE;
- do_setuid = B_TRUE;
- } else {
- if (vfs_optionisset(vfsp, MNTOPT_NODEVICES, NULL)) {
- devices = B_FALSE;
- do_devices = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_DEVICES, NULL)) {
- devices = B_TRUE;
- do_devices = B_TRUE;
- }
-
- if (vfs_optionisset(vfsp, MNTOPT_NOSETUID, NULL)) {
- setuid = B_FALSE;
- do_setuid = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_SETUID, NULL)) {
- setuid = B_TRUE;
- do_setuid = B_TRUE;
- }
- }
- if (vfs_optionisset(vfsp, MNTOPT_NOEXEC, NULL)) {
- exec = B_FALSE;
- do_exec = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_EXEC, NULL)) {
- exec = B_TRUE;
- do_exec = B_TRUE;
- }
- if (vfs_optionisset(vfsp, MNTOPT_NOXATTR, NULL)) {
- xattr = B_FALSE;
- do_xattr = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_XATTR, NULL)) {
- xattr = B_TRUE;
- do_xattr = B_TRUE;
- }
- if (vfs_optionisset(vfsp, MNTOPT_NOATIME, NULL)) {
- atime = B_FALSE;
- do_atime = B_TRUE;
- } else if (vfs_optionisset(vfsp, MNTOPT_ATIME, NULL)) {
- atime = B_TRUE;
- do_atime = B_TRUE;
- }
-
- /*
- * nbmand is a special property. It can only be changed at
- * mount time.
- *
- * This is weird, but it is documented to only be changeable
- * at mount time.
- */
- if (vfs_optionisset(vfsp, MNTOPT_NONBMAND, NULL)) {
- nbmand = B_FALSE;
- } else if (vfs_optionisset(vfsp, MNTOPT_NBMAND, NULL)) {
- nbmand = B_TRUE;
- } else {
- char osname[MAXNAMELEN];
-
- dmu_objset_name(os, osname);
- if ((error = dsl_prop_get_integer(osname, "nbmand", &nbmand,
- NULL))) {
- return (error);
- }
- }
/*
* Register property callbacks.
* overboard...
*/
ds = dmu_objset_ds(os);
- error = dsl_prop_register(ds, "atime", atime_changed_cb, zfsvfs);
+ error = dsl_prop_register(ds,
+ "atime", atime_changed_cb, zsb);
+ error = error ? error : dsl_prop_register(ds,
+ "xattr", xattr_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "xattr", xattr_changed_cb, zfsvfs);
+ "recordsize", blksz_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "recordsize", blksz_changed_cb, zfsvfs);
+ "readonly", readonly_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "readonly", readonly_changed_cb, zfsvfs);
+ "devices", devices_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "devices", devices_changed_cb, zfsvfs);
+ "setuid", setuid_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "setuid", setuid_changed_cb, zfsvfs);
+ "exec", exec_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "exec", exec_changed_cb, zfsvfs);
+ "snapdir", snapdir_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "snapdir", snapdir_changed_cb, zfsvfs);
+ "aclinherit", acl_inherit_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "aclinherit", acl_inherit_changed_cb, zfsvfs);
+ "vscan", vscan_changed_cb, zsb);
error = error ? error : dsl_prop_register(ds,
- "vscan", vscan_changed_cb, zfsvfs);
+ "nbmand", nbmand_changed_cb, zsb);
if (error)
goto unregister;
- /*
- * Invoke our callbacks to restore temporary mount options.
- */
if (do_readonly)
- readonly_changed_cb(zfsvfs, readonly);
- if (do_setuid)
- setuid_changed_cb(zfsvfs, setuid);
- if (do_exec)
- exec_changed_cb(zfsvfs, exec);
- if (do_devices)
- devices_changed_cb(zfsvfs, devices);
- if (do_xattr)
- xattr_changed_cb(zfsvfs, xattr);
- if (do_atime)
- atime_changed_cb(zfsvfs, atime);
-
- nbmand_changed_cb(zfsvfs, nbmand);
+ readonly_changed_cb(zsb, B_TRUE);
return (0);
* registered, but this is OK; it will simply return ENOMSG,
* which we will ignore.
*/
- (void) dsl_prop_unregister(ds, "atime", atime_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "xattr", xattr_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "recordsize", blksz_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "readonly", readonly_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "devices", devices_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "setuid", setuid_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "exec", exec_changed_cb, zfsvfs);
- (void) dsl_prop_unregister(ds, "snapdir", snapdir_changed_cb, zfsvfs);
+ (void) dsl_prop_unregister(ds, "atime", atime_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "xattr", xattr_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "recordsize", blksz_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "readonly", readonly_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "devices", devices_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "setuid", setuid_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "exec", exec_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "snapdir", snapdir_changed_cb, zsb);
(void) dsl_prop_unregister(ds, "aclinherit", acl_inherit_changed_cb,
- zfsvfs);
- (void) dsl_prop_unregister(ds, "vscan", vscan_changed_cb, zfsvfs);
- return (error);
+ zsb);
+ (void) dsl_prop_unregister(ds, "vscan", vscan_changed_cb, zsb);
+ (void) dsl_prop_unregister(ds, "nbmand", nbmand_changed_cb, zsb);
+ return (error);
}
EXPORT_SYMBOL(zfs_register_callbacks);
-#endif /* HAVE_ZPL */
static int
zfs_space_delta_cb(dmu_object_type_t bonustype, void *data,
uint64_t *userp, uint64_t *groupp)
{
- znode_phys_t *znp = data;
int error = 0;
/*
return (EEXIST);
if (bonustype == DMU_OT_ZNODE) {
+ znode_phys_t *znp = data;
*userp = znp->zp_uid;
*groupp = znp->zp_gid;
} else {
int hdrsize;
+ sa_hdr_phys_t *sap = data;
+ sa_hdr_phys_t sa = *sap;
+ boolean_t swap = B_FALSE;
ASSERT(bonustype == DMU_OT_SA);
- hdrsize = sa_hdrsize(data);
- if (hdrsize != 0) {
- *userp = *((uint64_t *)((uintptr_t)data + hdrsize +
- SA_UID_OFFSET));
- *groupp = *((uint64_t *)((uintptr_t)data + hdrsize +
- SA_GID_OFFSET));
- } else {
+ if (sa.sa_magic == 0) {
/*
* This should only happen for newly created
* files that haven't had the znode data filled
*/
*userp = 0;
*groupp = 0;
+ return (0);
+ }
+ if (sa.sa_magic == BSWAP_32(SA_MAGIC)) {
+ sa.sa_magic = SA_MAGIC;
+ sa.sa_layout_info = BSWAP_16(sa.sa_layout_info);
+ swap = B_TRUE;
+ } else {
+ VERIFY3U(sa.sa_magic, ==, SA_MAGIC);
+ }
+
+ hdrsize = sa_hdrsize(&sa);
+ VERIFY3U(hdrsize, >=, sizeof (sa_hdr_phys_t));
+ *userp = *((uint64_t *)((uintptr_t)data + hdrsize +
+ SA_UID_OFFSET));
+ *groupp = *((uint64_t *)((uintptr_t)data + hdrsize +
+ SA_GID_OFFSET));
+ if (swap) {
+ *userp = BSWAP_64(*userp);
+ *groupp = BSWAP_64(*groupp);
}
}
return (error);
}
-#ifdef HAVE_ZPL
static void
-fuidstr_to_sid(zfsvfs_t *zfsvfs, const char *fuidstr,
+fuidstr_to_sid(zfs_sb_t *zsb, const char *fuidstr,
char *domainbuf, int buflen, uid_t *ridp)
{
uint64_t fuid;
fuid = strtonum(fuidstr, NULL);
- domain = zfs_fuid_find_by_idx(zfsvfs, FUID_INDEX(fuid));
+ domain = zfs_fuid_find_by_idx(zsb, FUID_INDEX(fuid));
if (domain)
(void) strlcpy(domainbuf, domain, buflen);
else
}
static uint64_t
-zfs_userquota_prop_to_obj(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type)
+zfs_userquota_prop_to_obj(zfs_sb_t *zsb, zfs_userquota_prop_t type)
{
switch (type) {
case ZFS_PROP_USERUSED:
case ZFS_PROP_GROUPUSED:
return (DMU_GROUPUSED_OBJECT);
case ZFS_PROP_USERQUOTA:
- return (zfsvfs->z_userquota_obj);
+ return (zsb->z_userquota_obj);
case ZFS_PROP_GROUPQUOTA:
- return (zfsvfs->z_groupquota_obj);
+ return (zsb->z_groupquota_obj);
default:
return (ENOTSUP);
}
}
int
-zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+zfs_userspace_many(zfs_sb_t *zsb, zfs_userquota_prop_t type,
uint64_t *cookiep, void *vbuf, uint64_t *bufsizep)
{
int error;
zfs_useracct_t *buf = vbuf;
uint64_t obj;
- if (!dmu_objset_userspace_present(zfsvfs->z_os))
+ if (!dmu_objset_userspace_present(zsb->z_os))
return (ENOTSUP);
- obj = zfs_userquota_prop_to_obj(zfsvfs, type);
+ obj = zfs_userquota_prop_to_obj(zsb, type);
if (obj == 0) {
*bufsizep = 0;
return (0);
}
- for (zap_cursor_init_serialized(&zc, zfsvfs->z_os, obj, *cookiep);
+ for (zap_cursor_init_serialized(&zc, zsb->z_os, obj, *cookiep);
(error = zap_cursor_retrieve(&zc, &za)) == 0;
zap_cursor_advance(&zc)) {
if ((uintptr_t)buf - (uintptr_t)vbuf + sizeof (zfs_useracct_t) >
*bufsizep)
break;
- fuidstr_to_sid(zfsvfs, za.za_name,
+ fuidstr_to_sid(zsb, za.za_name,
buf->zu_domain, sizeof (buf->zu_domain), &buf->zu_rid);
buf->zu_space = za.za_first_integer;
* buf must be big enough (eg, 32 bytes)
*/
static int
-id_to_fuidstr(zfsvfs_t *zfsvfs, const char *domain, uid_t rid,
+id_to_fuidstr(zfs_sb_t *zsb, const char *domain, uid_t rid,
char *buf, boolean_t addok)
{
uint64_t fuid;
int domainid = 0;
if (domain && domain[0]) {
- domainid = zfs_fuid_find_by_domain(zfsvfs, domain, NULL, addok);
+ domainid = zfs_fuid_find_by_domain(zsb, domain, NULL, addok);
if (domainid == -1)
return (ENOENT);
}
}
int
-zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+zfs_userspace_one(zfs_sb_t *zsb, zfs_userquota_prop_t type,
const char *domain, uint64_t rid, uint64_t *valp)
{
char buf[32];
*valp = 0;
- if (!dmu_objset_userspace_present(zfsvfs->z_os))
+ if (!dmu_objset_userspace_present(zsb->z_os))
return (ENOTSUP);
- obj = zfs_userquota_prop_to_obj(zfsvfs, type);
+ obj = zfs_userquota_prop_to_obj(zsb, type);
if (obj == 0)
return (0);
- err = id_to_fuidstr(zfsvfs, domain, rid, buf, B_FALSE);
+ err = id_to_fuidstr(zsb, domain, rid, buf, B_FALSE);
if (err)
return (err);
- err = zap_lookup(zfsvfs->z_os, obj, buf, 8, 1, valp);
+ err = zap_lookup(zsb->z_os, obj, buf, 8, 1, valp);
if (err == ENOENT)
err = 0;
return (err);
EXPORT_SYMBOL(zfs_userspace_one);
int
-zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
+zfs_set_userquota(zfs_sb_t *zsb, zfs_userquota_prop_t type,
const char *domain, uint64_t rid, uint64_t quota)
{
char buf[32];
if (type != ZFS_PROP_USERQUOTA && type != ZFS_PROP_GROUPQUOTA)
return (EINVAL);
- if (zfsvfs->z_version < ZPL_VERSION_USERSPACE)
+ if (zsb->z_version < ZPL_VERSION_USERSPACE)
return (ENOTSUP);
- objp = (type == ZFS_PROP_USERQUOTA) ? &zfsvfs->z_userquota_obj :
- &zfsvfs->z_groupquota_obj;
+ objp = (type == ZFS_PROP_USERQUOTA) ? &zsb->z_userquota_obj :
+ &zsb->z_groupquota_obj;
- err = id_to_fuidstr(zfsvfs, domain, rid, buf, B_TRUE);
+ err = id_to_fuidstr(zsb, domain, rid, buf, B_TRUE);
if (err)
return (err);
- fuid_dirtied = zfsvfs->z_fuid_dirty;
+ fuid_dirtied = zsb->z_fuid_dirty;
- tx = dmu_tx_create(zfsvfs->z_os);
+ tx = dmu_tx_create(zsb->z_os);
dmu_tx_hold_zap(tx, *objp ? *objp : DMU_NEW_OBJECT, B_TRUE, NULL);
if (*objp == 0) {
dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE,
zfs_userquota_prop_prefixes[type]);
}
if (fuid_dirtied)
- zfs_fuid_txhold(zfsvfs, tx);
+ zfs_fuid_txhold(zsb, tx);
err = dmu_tx_assign(tx, TXG_WAIT);
if (err) {
dmu_tx_abort(tx);
return (err);
}
- mutex_enter(&zfsvfs->z_lock);
+ mutex_enter(&zsb->z_lock);
if (*objp == 0) {
- *objp = zap_create(zfsvfs->z_os, DMU_OT_USERGROUP_QUOTA,
+ *objp = zap_create(zsb->z_os, DMU_OT_USERGROUP_QUOTA,
DMU_OT_NONE, 0, tx);
- VERIFY(0 == zap_add(zfsvfs->z_os, MASTER_NODE_OBJ,
+ VERIFY(0 == zap_add(zsb->z_os, MASTER_NODE_OBJ,
zfs_userquota_prop_prefixes[type], 8, 1, objp, tx));
}
- mutex_exit(&zfsvfs->z_lock);
+ mutex_exit(&zsb->z_lock);
if (quota == 0) {
- err = zap_remove(zfsvfs->z_os, *objp, buf, tx);
+ err = zap_remove(zsb->z_os, *objp, buf, tx);
if (err == ENOENT)
err = 0;
} else {
- err = zap_update(zfsvfs->z_os, *objp, buf, 8, 1, "a, tx);
+ err = zap_update(zsb->z_os, *objp, buf, 8, 1, "a, tx);
}
ASSERT(err == 0);
if (fuid_dirtied)
- zfs_fuid_sync(zfsvfs, tx);
+ zfs_fuid_sync(zsb, tx);
dmu_tx_commit(tx);
return (err);
}
EXPORT_SYMBOL(zfs_set_userquota);
boolean_t
-zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup, uint64_t fuid)
+zfs_fuid_overquota(zfs_sb_t *zsb, boolean_t isgroup, uint64_t fuid)
{
char buf[32];
uint64_t used, quota, usedobj, quotaobj;
int err;
usedobj = isgroup ? DMU_GROUPUSED_OBJECT : DMU_USERUSED_OBJECT;
- quotaobj = isgroup ? zfsvfs->z_groupquota_obj : zfsvfs->z_userquota_obj;
+ quotaobj = isgroup ? zsb->z_groupquota_obj : zsb->z_userquota_obj;
- if (quotaobj == 0 || zfsvfs->z_replay)
+ if (quotaobj == 0 || zsb->z_replay)
return (B_FALSE);
(void) sprintf(buf, "%llx", (longlong_t)fuid);
- err = zap_lookup(zfsvfs->z_os, quotaobj, buf, 8, 1, "a);
+ err = zap_lookup(zsb->z_os, quotaobj, buf, 8, 1, "a);
if (err != 0)
return (B_FALSE);
- err = zap_lookup(zfsvfs->z_os, usedobj, buf, 8, 1, &used);
+ err = zap_lookup(zsb->z_os, usedobj, buf, 8, 1, &used);
if (err != 0)
return (B_FALSE);
return (used >= quota);
EXPORT_SYMBOL(zfs_fuid_overquota);
boolean_t
-zfs_owner_overquota(zfsvfs_t *zfsvfs, znode_t *zp, boolean_t isgroup)
+zfs_owner_overquota(zfs_sb_t *zsb, znode_t *zp, boolean_t isgroup)
{
uint64_t fuid;
uint64_t quotaobj;
- quotaobj = isgroup ? zfsvfs->z_groupquota_obj : zfsvfs->z_userquota_obj;
+ quotaobj = isgroup ? zsb->z_groupquota_obj : zsb->z_userquota_obj;
fuid = isgroup ? zp->z_gid : zp->z_uid;
- if (quotaobj == 0 || zfsvfs->z_replay)
+ if (quotaobj == 0 || zsb->z_replay)
return (B_FALSE);
- return (zfs_fuid_overquota(zfsvfs, isgroup, fuid));
+ return (zfs_fuid_overquota(zsb, isgroup, fuid));
}
EXPORT_SYMBOL(zfs_owner_overquota);
int
-zfsvfs_create(const char *osname, zfsvfs_t **zfvp)
+zfs_sb_create(const char *osname, zfs_sb_t **zsbp)
{
objset_t *os;
- zfsvfs_t *zfsvfs;
+ zfs_sb_t *zsb;
uint64_t zval;
int i, error;
uint64_t sa_obj;
- zfsvfs = kmem_zalloc(sizeof (zfsvfs_t), KM_SLEEP);
+ zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_SLEEP | KM_NODEBUG);
/*
* We claim to always be readonly so we can open snapshots;
* other ZPL code will prevent us from writing to snapshots.
*/
- error = dmu_objset_own(osname, DMU_OST_ZFS, B_TRUE, zfsvfs, &os);
+ error = dmu_objset_own(osname, DMU_OST_ZFS, B_TRUE, zsb, &os);
if (error) {
- kmem_free(zfsvfs, sizeof (zfsvfs_t));
+ kmem_free(zsb, sizeof (zfs_sb_t));
return (error);
}
* Should probably make this a kmem cache, shuffle fields,
* and just bzero up to z_hold_mtx[].
*/
- zfsvfs->z_vfs = NULL;
- zfsvfs->z_parent = zfsvfs;
- zfsvfs->z_max_blksz = SPA_MAXBLOCKSIZE;
- zfsvfs->z_show_ctldir = ZFS_SNAPDIR_VISIBLE;
- zfsvfs->z_os = os;
+ zsb->z_sb = NULL;
+ zsb->z_parent = zsb;
+ zsb->z_max_blksz = SPA_MAXBLOCKSIZE;
+ zsb->z_show_ctldir = ZFS_SNAPDIR_VISIBLE;
+ zsb->z_os = os;
- error = zfs_get_zplprop(os, ZFS_PROP_VERSION, &zfsvfs->z_version);
+ error = zfs_get_zplprop(os, ZFS_PROP_VERSION, &zsb->z_version);
if (error) {
goto out;
- } else if (zfsvfs->z_version >
+ } else if (zsb->z_version >
zfs_zpl_version_map(spa_version(dmu_objset_spa(os)))) {
(void) printk("Can't mount a version %lld file system "
"on a version %lld pool\n. Pool must be upgraded to mount "
- "this file system.", (u_longlong_t)zfsvfs->z_version,
+ "this file system.", (u_longlong_t)zsb->z_version,
(u_longlong_t)spa_version(dmu_objset_spa(os)));
error = ENOTSUP;
goto out;
}
if ((error = zfs_get_zplprop(os, ZFS_PROP_NORMALIZE, &zval)) != 0)
goto out;
- zfsvfs->z_norm = (int)zval;
+ zsb->z_norm = (int)zval;
if ((error = zfs_get_zplprop(os, ZFS_PROP_UTF8ONLY, &zval)) != 0)
goto out;
- zfsvfs->z_utf8 = (zval != 0);
+ zsb->z_utf8 = (zval != 0);
if ((error = zfs_get_zplprop(os, ZFS_PROP_CASE, &zval)) != 0)
goto out;
- zfsvfs->z_case = (uint_t)zval;
+ zsb->z_case = (uint_t)zval;
/*
* Fold case on file systems that are always or sometimes case
* insensitive.
*/
- if (zfsvfs->z_case == ZFS_CASE_INSENSITIVE ||
- zfsvfs->z_case == ZFS_CASE_MIXED)
- zfsvfs->z_norm |= U8_TEXTPREP_TOUPPER;
+ if (zsb->z_case == ZFS_CASE_INSENSITIVE ||
+ zsb->z_case == ZFS_CASE_MIXED)
+ zsb->z_norm |= U8_TEXTPREP_TOUPPER;
- zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os);
- zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os);
+ zsb->z_use_fuids = USE_FUIDS(zsb->z_version, zsb->z_os);
+ zsb->z_use_sa = USE_SA(zsb->z_version, zsb->z_os);
- if (zfsvfs->z_use_sa) {
+ if (zsb->z_use_sa) {
/* should either have both of these objects or none */
error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SA_ATTRS, 8, 1,
&sa_obj);
if (error)
- return (error);
+ goto out;
+
+ error = zfs_get_zplprop(os, ZFS_PROP_XATTR, &zval);
+ if ((error == 0) && (zval == ZFS_XATTR_SA))
+ zsb->z_xattr_sa = B_TRUE;
} else {
/*
* Pre SA versions file systems should never touch
}
error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END,
- &zfsvfs->z_attr_table);
+ &zsb->z_attr_table);
if (error)
goto out;
- if (zfsvfs->z_version >= ZPL_VERSION_SA)
+ if (zsb->z_version >= ZPL_VERSION_SA)
sa_register_update_callback(os, zfs_sa_upgrade);
error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_ROOT_OBJ, 8, 1,
- &zfsvfs->z_root);
+ &zsb->z_root);
if (error)
goto out;
- ASSERT(zfsvfs->z_root != 0);
+ ASSERT(zsb->z_root != 0);
error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_UNLINKED_SET, 8, 1,
- &zfsvfs->z_unlinkedobj);
+ &zsb->z_unlinkedobj);
if (error)
goto out;
error = zap_lookup(os, MASTER_NODE_OBJ,
zfs_userquota_prop_prefixes[ZFS_PROP_USERQUOTA],
- 8, 1, &zfsvfs->z_userquota_obj);
+ 8, 1, &zsb->z_userquota_obj);
if (error && error != ENOENT)
goto out;
error = zap_lookup(os, MASTER_NODE_OBJ,
zfs_userquota_prop_prefixes[ZFS_PROP_GROUPQUOTA],
- 8, 1, &zfsvfs->z_groupquota_obj);
+ 8, 1, &zsb->z_groupquota_obj);
if (error && error != ENOENT)
goto out;
error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_FUID_TABLES, 8, 1,
- &zfsvfs->z_fuid_obj);
+ &zsb->z_fuid_obj);
if (error && error != ENOENT)
goto out;
error = zap_lookup(os, MASTER_NODE_OBJ, ZFS_SHARES_DIR, 8, 1,
- &zfsvfs->z_shares_dir);
+ &zsb->z_shares_dir);
if (error && error != ENOENT)
goto out;
- mutex_init(&zfsvfs->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL);
- mutex_init(&zfsvfs->z_lock, NULL, MUTEX_DEFAULT, NULL);
- list_create(&zfsvfs->z_all_znodes, sizeof (znode_t),
+ mutex_init(&zsb->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL);
+ mutex_init(&zsb->z_lock, NULL, MUTEX_DEFAULT, NULL);
+ list_create(&zsb->z_all_znodes, sizeof (znode_t),
offsetof(znode_t, z_link_node));
- rrw_init(&zfsvfs->z_teardown_lock);
- rw_init(&zfsvfs->z_teardown_inactive_lock, NULL, RW_DEFAULT, NULL);
- rw_init(&zfsvfs->z_fuid_lock, NULL, RW_DEFAULT, NULL);
+ rrw_init(&zsb->z_teardown_lock);
+ rw_init(&zsb->z_teardown_inactive_lock, NULL, RW_DEFAULT, NULL);
+ rw_init(&zsb->z_fuid_lock, NULL, RW_DEFAULT, NULL);
for (i = 0; i != ZFS_OBJ_MTX_SZ; i++)
- mutex_init(&zfsvfs->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL);
+ mutex_init(&zsb->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL);
+
+ avl_create(&zsb->z_ctldir_snaps, snapentry_compare,
+ sizeof (zfs_snapentry_t), offsetof(zfs_snapentry_t, se_node));
+ mutex_init(&zsb->z_ctldir_lock, NULL, MUTEX_DEFAULT, NULL);
- *zfvp = zfsvfs;
+ *zsbp = zsb;
return (0);
out:
- dmu_objset_disown(os, zfsvfs);
- *zfvp = NULL;
- kmem_free(zfsvfs, sizeof (zfsvfs_t));
+ dmu_objset_disown(os, zsb);
+ *zsbp = NULL;
+ kmem_free(zsb, sizeof (zfs_sb_t));
return (error);
}
+EXPORT_SYMBOL(zfs_sb_create);
-static int
-zfsvfs_setup(zfsvfs_t *zfsvfs, boolean_t mounting)
+int
+zfs_sb_setup(zfs_sb_t *zsb, boolean_t mounting)
{
int error;
- error = zfs_register_callbacks(zfsvfs->z_vfs);
+ error = zfs_register_callbacks(zsb);
if (error)
return (error);
/*
- * Set the objset user_ptr to track its zfsvfs.
+ * Set the objset user_ptr to track its zsb.
*/
- mutex_enter(&zfsvfs->z_os->os_user_ptr_lock);
- dmu_objset_set_user(zfsvfs->z_os, zfsvfs);
- mutex_exit(&zfsvfs->z_os->os_user_ptr_lock);
+ mutex_enter(&zsb->z_os->os_user_ptr_lock);
+ dmu_objset_set_user(zsb->z_os, zsb);
+ mutex_exit(&zsb->z_os->os_user_ptr_lock);
- zfsvfs->z_log = zil_open(zfsvfs->z_os, zfs_get_data);
+ zsb->z_log = zil_open(zsb->z_os, zfs_get_data);
/*
* If we are not mounting (ie: online recv), then we don't
* During replay we remove the read only flag to
* allow replays to succeed.
*/
- readonly = zfsvfs->z_vfs->vfs_flag & VFS_RDONLY;
+ readonly = zfs_is_readonly(zsb);
if (readonly != 0)
- zfsvfs->z_vfs->vfs_flag &= ~VFS_RDONLY;
+ readonly_changed_cb(zsb, B_FALSE);
else
- zfs_unlinked_drain(zfsvfs);
+ zfs_unlinked_drain(zsb);
/*
* Parse and replay the intent log.
* allocated and in the unlinked set, and there is an
* intent log record saying to allocate it.
*/
- if (spa_writeable(dmu_objset_spa(zfsvfs->z_os))) {
+ if (spa_writeable(dmu_objset_spa(zsb->z_os))) {
if (zil_replay_disable) {
- zil_destroy(zfsvfs->z_log, B_FALSE);
+ zil_destroy(zsb->z_log, B_FALSE);
} else {
- zfsvfs->z_replay = B_TRUE;
- zil_replay(zfsvfs->z_os, zfsvfs,
+ zsb->z_replay = B_TRUE;
+ zil_replay(zsb->z_os, zsb,
zfs_replay_vector);
- zfsvfs->z_replay = B_FALSE;
+ zsb->z_replay = B_FALSE;
}
}
- zfsvfs->z_vfs->vfs_flag |= readonly; /* restore readonly bit */
+
+ /* restore readonly bit */
+ if (readonly != 0)
+ readonly_changed_cb(zsb, B_TRUE);
}
return (0);
}
+EXPORT_SYMBOL(zfs_sb_setup);
void
-zfsvfs_free(zfsvfs_t *zfsvfs)
+zfs_sb_free(zfs_sb_t *zsb)
{
int i;
- extern krwlock_t zfsvfs_lock; /* in zfs_znode.c */
-
- /*
- * This is a barrier to prevent the filesystem from going away in
- * zfs_znode_move() until we can safely ensure that the filesystem is
- * not unmounted. We consider the filesystem valid before the barrier
- * and invalid after the barrier.
- */
- rw_enter(&zfsvfs_lock, RW_READER);
- rw_exit(&zfsvfs_lock);
- zfs_fuid_destroy(zfsvfs);
+ zfs_fuid_destroy(zsb);
- mutex_destroy(&zfsvfs->z_znodes_lock);
- mutex_destroy(&zfsvfs->z_lock);
- list_destroy(&zfsvfs->z_all_znodes);
- rrw_destroy(&zfsvfs->z_teardown_lock);
- rw_destroy(&zfsvfs->z_teardown_inactive_lock);
- rw_destroy(&zfsvfs->z_fuid_lock);
+ mutex_destroy(&zsb->z_znodes_lock);
+ mutex_destroy(&zsb->z_lock);
+ list_destroy(&zsb->z_all_znodes);
+ rrw_destroy(&zsb->z_teardown_lock);
+ rw_destroy(&zsb->z_teardown_inactive_lock);
+ rw_destroy(&zsb->z_fuid_lock);
for (i = 0; i != ZFS_OBJ_MTX_SZ; i++)
- mutex_destroy(&zfsvfs->z_hold_mtx[i]);
- kmem_free(zfsvfs, sizeof (zfsvfs_t));
+ mutex_destroy(&zsb->z_hold_mtx[i]);
+ mutex_destroy(&zsb->z_ctldir_lock);
+ avl_destroy(&zsb->z_ctldir_snaps);
+ kmem_free(zsb, sizeof (zfs_sb_t));
}
+EXPORT_SYMBOL(zfs_sb_free);
static void
-zfs_set_fuid_feature(zfsvfs_t *zfsvfs)
+zfs_set_fuid_feature(zfs_sb_t *zsb)
{
- zfsvfs->z_use_fuids = USE_FUIDS(zfsvfs->z_version, zfsvfs->z_os);
- if (zfsvfs->z_use_fuids && zfsvfs->z_vfs) {
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_XVATTR);
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_SYSATTR_VIEWS);
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_ACEMASKONACCESS);
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_ACLONCREATE);
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_ACCESS_FILTER);
- vfs_set_feature(zfsvfs->z_vfs, VFSFT_REPARSE);
- }
- zfsvfs->z_use_sa = USE_SA(zfsvfs->z_version, zfsvfs->z_os);
-}
-
-int
-zfs_domount(vfs_t *vfsp, char *osname)
-{
- uint64_t recordsize, fsid_guid;
- int error = 0;
- zfsvfs_t *zfsvfs;
-
- ASSERT(vfsp);
- ASSERT(osname);
-
- error = zfsvfs_create(osname, &zfsvfs);
- if (error)
- return (error);
- zfsvfs->z_vfs = vfsp;
-
- /* Initialize the generic filesystem structure. */
- vfsp->vfs_bcount = 0;
- vfsp->vfs_data = NULL;
-
- if ((error = dsl_prop_get_integer(osname, "recordsize",
- &recordsize, NULL)))
- goto out;
-
- vfsp->vfs_bsize = recordsize;
- vfsp->vfs_flag |= VFS_NOTRUNC;
- vfsp->vfs_data = zfsvfs;
-
- /*
- * The fsid is 64 bits, composed of an 8-bit fs type, which
- * separates our fsid from any other filesystem types, and a
- * 56-bit objset unique ID. The objset unique ID is unique to
- * all objsets open on this system, provided by unique_create().
- * The 8-bit fs type must be put in the low bits of fsid[1]
- * because that's where other Solaris filesystems put it.
- */
- fsid_guid = dmu_objset_fsid_guid(zfsvfs->z_os);
- ASSERT((fsid_guid & ~((1ULL<<56)-1)) == 0);
- vfsp->vfs_fsid.val[0] = fsid_guid;
- vfsp->vfs_fsid.val[1] = ((fsid_guid>>32) << 8);
-
- /*
- * Set features for file system.
- */
- zfs_set_fuid_feature(zfsvfs);
- if (zfsvfs->z_case == ZFS_CASE_INSENSITIVE) {
- vfs_set_feature(vfsp, VFSFT_DIRENTFLAGS);
- vfs_set_feature(vfsp, VFSFT_CASEINSENSITIVE);
- vfs_set_feature(vfsp, VFSFT_NOCASESENSITIVE);
- } else if (zfsvfs->z_case == ZFS_CASE_MIXED) {
- vfs_set_feature(vfsp, VFSFT_DIRENTFLAGS);
- vfs_set_feature(vfsp, VFSFT_CASEINSENSITIVE);
- }
- vfs_set_feature(vfsp, VFSFT_ZEROCOPY_SUPPORTED);
-
- if (dmu_objset_is_snapshot(zfsvfs->z_os)) {
- uint64_t pval;
-
- atime_changed_cb(zfsvfs, B_FALSE);
- readonly_changed_cb(zfsvfs, B_TRUE);
- if ((error = dsl_prop_get_integer(osname,"xattr",&pval,NULL)))
- goto out;
- xattr_changed_cb(zfsvfs, pval);
- zfsvfs->z_issnap = B_TRUE;
- zfsvfs->z_os->os_sync = ZFS_SYNC_DISABLED;
-
- mutex_enter(&zfsvfs->z_os->os_user_ptr_lock);
- dmu_objset_set_user(zfsvfs->z_os, zfsvfs);
- mutex_exit(&zfsvfs->z_os->os_user_ptr_lock);
- } else {
- error = zfsvfs_setup(zfsvfs, B_TRUE);
- }
-
- if (!zfsvfs->z_issnap)
- zfsctl_create(zfsvfs);
-out:
- if (error) {
- dmu_objset_disown(zfsvfs->z_os, zfsvfs);
- zfsvfs_free(zfsvfs);
- }
-
- return (error);
+ zsb->z_use_fuids = USE_FUIDS(zsb->z_version, zsb->z_os);
+ zsb->z_use_sa = USE_SA(zsb->z_version, zsb->z_os);
}
-EXPORT_SYMBOL(zfs_domount);
void
-zfs_unregister_callbacks(zfsvfs_t *zfsvfs)
+zfs_unregister_callbacks(zfs_sb_t *zsb)
{
- objset_t *os = zfsvfs->z_os;
+ objset_t *os = zsb->z_os;
struct dsl_dataset *ds;
/*
if (!dmu_objset_is_snapshot(os)) {
ds = dmu_objset_ds(os);
VERIFY(dsl_prop_unregister(ds, "atime", atime_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "xattr", xattr_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "recordsize", blksz_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "readonly", readonly_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "devices", devices_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "setuid", setuid_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "exec", exec_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "snapdir", snapdir_changed_cb,
- zfsvfs) == 0);
+ zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "aclinherit",
- acl_inherit_changed_cb, zfsvfs) == 0);
+ acl_inherit_changed_cb, zsb) == 0);
VERIFY(dsl_prop_unregister(ds, "vscan",
- vscan_changed_cb, zfsvfs) == 0);
+ vscan_changed_cb, zsb) == 0);
+
+ VERIFY(dsl_prop_unregister(ds, "nbmand",
+ nbmand_changed_cb, zsb) == 0);
}
}
EXPORT_SYMBOL(zfs_unregister_callbacks);
}
return (EACCES);
}
+EXPORT_SYMBOL(zfs_check_global_label);
#endif /* HAVE_MLSLABEL */
int
-zfs_statvfs(vfs_t *vfsp, struct statvfs64 *statp)
+zfs_statvfs(struct dentry *dentry, struct kstatfs *statp)
{
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
- dev32_t d32;
+ zfs_sb_t *zsb = dentry->d_sb->s_fs_info;
uint64_t refdbytes, availbytes, usedobjs, availobjs;
+ uint64_t fsid;
+ uint32_t bshift;
- ZFS_ENTER(zfsvfs);
+ ZFS_ENTER(zsb);
- dmu_objset_space(zfsvfs->z_os,
+ dmu_objset_space(zsb->z_os,
&refdbytes, &availbytes, &usedobjs, &availobjs);
+ fsid = dmu_objset_fsid_guid(zsb->z_os);
/*
- * The underlying storage pool actually uses multiple block sizes.
- * We report the fragsize as the smallest block size we support,
- * and we report our blocksize as the filesystem's maximum blocksize.
+ * The underlying storage pool actually uses multiple block
+ * size. Under Solaris frsize (fragment size) is reported as
+ * the smallest block size we support, and bsize (block size)
+ * as the filesystem's maximum block size. Unfortunately,
+ * under Linux the fragment size and block size are often used
+ * interchangeably. Thus we are forced to report both of them
+ * as the filesystem's maximum block size.
*/
- statp->f_frsize = 1UL << SPA_MINBLOCKSHIFT;
- statp->f_bsize = zfsvfs->z_max_blksz;
+ statp->f_frsize = zsb->z_max_blksz;
+ statp->f_bsize = zsb->z_max_blksz;
+ bshift = fls(statp->f_bsize) - 1;
/*
- * The following report "total" blocks of various kinds in the
- * file system, but reported in terms of f_frsize - the
- * "fragment" size.
+ * The following report "total" blocks of various kinds in
+ * the file system, but reported in terms of f_bsize - the
+ * "preferred" size.
*/
- statp->f_blocks = (refdbytes + availbytes) >> SPA_MINBLOCKSHIFT;
- statp->f_bfree = availbytes >> SPA_MINBLOCKSHIFT;
+ statp->f_blocks = (refdbytes + availbytes) >> bshift;
+ statp->f_bfree = availbytes >> bshift;
statp->f_bavail = statp->f_bfree; /* no root reservation */
/*
* For f_ffree, report the smaller of the number of object available
* and the number of blocks (each object will take at least a block).
*/
- statp->f_ffree = MIN(availobjs, statp->f_bfree);
- statp->f_favail = statp->f_ffree; /* no "root reservation" */
+ statp->f_ffree = MIN(availobjs, availbytes >> DNODE_SHIFT);
statp->f_files = statp->f_ffree + usedobjs;
-
- (void) cmpldev(&d32, vfsp->vfs_dev);
- statp->f_fsid = d32;
+ statp->f_fsid.val[0] = (uint32_t)fsid;
+ statp->f_fsid.val[1] = (uint32_t)(fsid >> 32);
+ statp->f_type = ZFS_SUPER_MAGIC;
+ statp->f_namelen = ZFS_MAXNAMELEN;
/*
- * We're a zfs filesystem.
- */
- (void) strcpy(statp->f_basetype, MNTTYPE_ZFS);
-
- statp->f_flag = vf_to_stf(vfsp->vfs_flag);
-
- statp->f_namemax = ZFS_MAXNAMELEN;
-
- /*
- * We have all of 32 characters to stuff a string here.
+ * We have all of 40 characters to stuff a string here.
* Is there anything useful we could/should provide?
*/
- bzero(statp->f_fstr, sizeof (statp->f_fstr));
+ bzero(statp->f_spare, sizeof (statp->f_spare));
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
return (0);
}
EXPORT_SYMBOL(zfs_statvfs);
int
-zfs_root(vfs_t *vfsp, vnode_t **vpp)
+zfs_root(zfs_sb_t *zsb, struct inode **ipp)
{
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
znode_t *rootzp;
int error;
- ZFS_ENTER(zfsvfs);
+ ZFS_ENTER(zsb);
- error = zfs_zget(zfsvfs, zfsvfs->z_root, &rootzp);
+ error = zfs_zget(zsb, zsb->z_root, &rootzp);
if (error == 0)
- *vpp = ZTOV(rootzp);
+ *ipp = ZTOI(rootzp);
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
return (error);
}
EXPORT_SYMBOL(zfs_root);
+#ifdef HAVE_SHRINK
+int
+zfs_sb_prune(struct super_block *sb, unsigned long nr_to_scan, int *objects)
+{
+ zfs_sb_t *zsb = sb->s_fs_info;
+ struct shrinker *shrinker = &sb->s_shrink;
+ struct shrink_control sc = {
+ .nr_to_scan = nr_to_scan,
+ .gfp_mask = GFP_KERNEL,
+ };
+
+ ZFS_ENTER(zsb);
+ *objects = (*shrinker->shrink)(shrinker, &sc);
+ ZFS_EXIT(zsb);
+
+ return (0);
+}
+EXPORT_SYMBOL(zfs_sb_prune);
+#endif /* HAVE_SHRINK */
+
/*
- * Teardown the zfsvfs::z_os.
+ * Teardown the zfs_sb_t.
*
* Note, if 'unmounting' if FALSE, we return with the 'z_teardown_lock'
* and 'z_teardown_inactive_lock' held.
*/
-static int
-zfsvfs_teardown(zfsvfs_t *zfsvfs, boolean_t unmounting)
+int
+zfs_sb_teardown(zfs_sb_t *zsb, boolean_t unmounting)
{
znode_t *zp;
- rrw_enter(&zfsvfs->z_teardown_lock, RW_WRITER, FTAG);
+ rrw_enter(&zsb->z_teardown_lock, RW_WRITER, FTAG);
if (!unmounting) {
/*
- * We purge the parent filesystem's vfsp as the parent
- * filesystem and all of its snapshots have their vnode's
- * v_vfsp set to the parent's filesystem's vfsp. Note,
- * 'z_parent' is self referential for non-snapshots.
+ * We purge the parent filesystem's super block as the
+ * parent filesystem and all of its snapshots have their
+ * inode's super block set to the parent's filesystem's
+ * super block. Note, 'z_parent' is self referential
+ * for non-snapshots.
*/
- (void) dnlc_purge_vfsp(zfsvfs->z_parent->z_vfs, 0);
+ shrink_dcache_sb(zsb->z_parent->z_sb);
}
/*
+ * If someone has not already unmounted this file system,
+ * drain the iput_taskq to ensure all active references to the
+ * zfs_sb_t have been handled only then can it be safely destroyed.
+ */
+ if (zsb->z_os)
+ taskq_wait(dsl_pool_iput_taskq(dmu_objset_pool(zsb->z_os)));
+
+ /*
* Close the zil. NB: Can't close the zil while zfs_inactive
* threads are blocked as zil_close can call zfs_inactive.
*/
- if (zfsvfs->z_log) {
- zil_close(zfsvfs->z_log);
- zfsvfs->z_log = NULL;
+ if (zsb->z_log) {
+ zil_close(zsb->z_log);
+ zsb->z_log = NULL;
}
- rw_enter(&zfsvfs->z_teardown_inactive_lock, RW_WRITER);
+ rw_enter(&zsb->z_teardown_inactive_lock, RW_WRITER);
/*
* If we are not unmounting (ie: online recv) and someone already
* unmounted this file system while we were doing the switcheroo,
* or a reopen of z_os failed then just bail out now.
*/
- if (!unmounting && (zfsvfs->z_unmounted || zfsvfs->z_os == NULL)) {
- rw_exit(&zfsvfs->z_teardown_inactive_lock);
- rrw_exit(&zfsvfs->z_teardown_lock, FTAG);
+ if (!unmounting && (zsb->z_unmounted || zsb->z_os == NULL)) {
+ rw_exit(&zsb->z_teardown_inactive_lock);
+ rrw_exit(&zsb->z_teardown_lock, FTAG);
return (EIO);
}
/*
- * At this point there are no vops active, and any new vops will
- * fail with EIO since we have z_teardown_lock for writer (only
- * relavent for forced unmount).
+ * At this point there are no VFS ops active, and any new VFS ops
+ * will fail with EIO since we have z_teardown_lock for writer (only
+ * relevant for forced unmount).
*
* Release all holds on dbufs.
*/
- mutex_enter(&zfsvfs->z_znodes_lock);
- for (zp = list_head(&zfsvfs->z_all_znodes); zp != NULL;
- zp = list_next(&zfsvfs->z_all_znodes, zp))
+ mutex_enter(&zsb->z_znodes_lock);
+ for (zp = list_head(&zsb->z_all_znodes); zp != NULL;
+ zp = list_next(&zsb->z_all_znodes, zp)) {
if (zp->z_sa_hdl) {
- ASSERT(ZTOV(zp)->v_count > 0);
+ ASSERT(atomic_read(&ZTOI(zp)->i_count) > 0);
zfs_znode_dmu_fini(zp);
}
- mutex_exit(&zfsvfs->z_znodes_lock);
+ }
+ mutex_exit(&zsb->z_znodes_lock);
/*
- * If we are unmounting, set the unmounted flag and let new vops
+ * If we are unmounting, set the unmounted flag and let new VFS ops
* unblock. zfs_inactive will have the unmounted behavior, and all
- * other vops will fail with EIO.
+ * other VFS ops will fail with EIO.
*/
if (unmounting) {
- zfsvfs->z_unmounted = B_TRUE;
- rrw_exit(&zfsvfs->z_teardown_lock, FTAG);
- rw_exit(&zfsvfs->z_teardown_inactive_lock);
+ zsb->z_unmounted = B_TRUE;
+ rrw_exit(&zsb->z_teardown_lock, FTAG);
+ rw_exit(&zsb->z_teardown_inactive_lock);
}
/*
* z_os will be NULL if there was an error in attempting to reopen
- * zfsvfs, so just return as the properties had already been
+ * zsb, so just return as the properties had already been
+ *
* unregistered and cached data had been evicted before.
*/
- if (zfsvfs->z_os == NULL)
+ if (zsb->z_os == NULL)
return (0);
/*
* Unregister properties.
*/
- zfs_unregister_callbacks(zfsvfs);
+ zfs_unregister_callbacks(zsb);
/*
* Evict cached data
*/
- if (dmu_objset_is_dirty_anywhere(zfsvfs->z_os))
- if (!(zfsvfs->z_vfs->vfs_flag & VFS_RDONLY))
- txg_wait_synced(dmu_objset_pool(zfsvfs->z_os), 0);
- (void) dmu_objset_evict_dbufs(zfsvfs->z_os);
+ if (dsl_dataset_is_dirty(dmu_objset_ds(zsb->z_os)) &&
+ !zfs_is_readonly(zsb))
+ txg_wait_synced(dmu_objset_pool(zsb->z_os), 0);
+ (void) dmu_objset_evict_dbufs(zsb->z_os);
return (0);
}
+EXPORT_SYMBOL(zfs_sb_teardown);
+
+#if defined(HAVE_BDI) && !defined(HAVE_BDI_SETUP_AND_REGISTER)
+atomic_long_t zfs_bdi_seq = ATOMIC_LONG_INIT(0);
+#endif /* HAVE_BDI && !HAVE_BDI_SETUP_AND_REGISTER */
-/*ARGSUSED*/
int
-zfs_umount(vfs_t *vfsp, int fflag, cred_t *cr)
+zfs_domount(struct super_block *sb, void *data, int silent)
{
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
- objset_t *os;
- int ret;
+ zpl_mount_data_t *zmd = data;
+ const char *osname = zmd->z_osname;
+ zfs_sb_t *zsb;
+ struct inode *root_inode;
+ uint64_t recordsize;
+ int error;
- ret = secpolicy_fs_unmount(cr, vfsp);
- if (ret) {
- if (dsl_deleg_access((char *)refstr_value(vfsp->vfs_resource),
- ZFS_DELEG_PERM_MOUNT, cr))
- return (ret);
- }
+ error = zfs_sb_create(osname, &zsb);
+ if (error)
+ return (error);
- /*
- * We purge the parent filesystem's vfsp as the parent filesystem
- * and all of its snapshots have their vnode's v_vfsp set to the
- * parent's filesystem's vfsp. Note, 'z_parent' is self
- * referential for non-snapshots.
- */
- (void) dnlc_purge_vfsp(zfsvfs->z_parent->z_vfs, 0);
+ if ((error = dsl_prop_get_integer(osname, "recordsize",
+ &recordsize, NULL)))
+ goto out;
+
+ zsb->z_sb = sb;
+ sb->s_fs_info = zsb;
+ sb->s_magic = ZFS_SUPER_MAGIC;
+ sb->s_maxbytes = MAX_LFS_FILESIZE;
+ sb->s_time_gran = 1;
+ sb->s_blocksize = recordsize;
+ sb->s_blocksize_bits = ilog2(recordsize);
+#ifdef HAVE_BDI
/*
- * Unmount any snapshots mounted under .zfs before unmounting the
- * dataset itself.
+ * 2.6.32 API change,
+ * Added backing_device_info (BDI) per super block interfaces. A BDI
+ * must be configured when using a non-device backed filesystem for
+ * proper writeback. This is not required for older pdflush kernels.
+ *
+ * NOTE: Linux read-ahead is disabled in favor of zfs read-ahead.
*/
- if (zfsvfs->z_ctldir != NULL &&
- (ret = zfsctl_umount_snapshots(vfsp, fflag, cr)) != 0) {
- return (ret);
+ zsb->z_bdi.ra_pages = 0;
+ sb->s_bdi = &zsb->z_bdi;
+
+ error = -bdi_setup_and_register(&zsb->z_bdi, "zfs", BDI_CAP_MAP_COPY);
+ if (error)
+ goto out;
+#endif /* HAVE_BDI */
+
+ /* Set callback operations for the file system. */
+ sb->s_op = &zpl_super_operations;
+ sb->s_xattr = zpl_xattr_handlers;
+ sb->s_export_op = &zpl_export_operations;
+#ifdef HAVE_S_D_OP
+ sb->s_d_op = &zpl_dentry_operations;
+#endif /* HAVE_S_D_OP */
+
+ /* Set features for file system. */
+ zfs_set_fuid_feature(zsb);
+
+ if (dmu_objset_is_snapshot(zsb->z_os)) {
+ uint64_t pval;
+
+ atime_changed_cb(zsb, B_FALSE);
+ readonly_changed_cb(zsb, B_TRUE);
+ if ((error = dsl_prop_get_integer(osname,"xattr",&pval,NULL)))
+ goto out;
+ xattr_changed_cb(zsb, pval);
+ zsb->z_issnap = B_TRUE;
+ zsb->z_os->os_sync = ZFS_SYNC_DISABLED;
+
+ mutex_enter(&zsb->z_os->os_user_ptr_lock);
+ dmu_objset_set_user(zsb->z_os, zsb);
+ mutex_exit(&zsb->z_os->os_user_ptr_lock);
+ } else {
+ error = zfs_sb_setup(zsb, B_TRUE);
}
- if (!(fflag & MS_FORCE)) {
- /*
- * Check the number of active vnodes in the file system.
- * Our count is maintained in the vfs structure, but the
- * number is off by 1 to indicate a hold on the vfs
- * structure itself.
- *
- * The '.zfs' directory maintains a reference of its
- * own, and any active references underneath are
- * reflected in the vnode count.
- */
- if (zfsvfs->z_ctldir == NULL) {
- if (vfsp->vfs_count > 1)
- return (EBUSY);
- } else {
- if (vfsp->vfs_count > 2 ||
- zfsvfs->z_ctldir->v_count > 1)
- return (EBUSY);
- }
+ /* Allocate a root inode for the filesystem. */
+ error = zfs_root(zsb, &root_inode);
+ if (error) {
+ (void) zfs_umount(sb);
+ goto out;
}
- vfsp->vfs_flag |= VFS_UNMOUNTED;
+ /* Allocate a root dentry for the filesystem */
+ sb->s_root = d_make_root(root_inode);
+ if (sb->s_root == NULL) {
+ (void) zfs_umount(sb);
+ error = ENOMEM;
+ goto out;
+ }
+
+ if (!zsb->z_issnap)
+ zfsctl_create(zsb);
+out:
+ if (error) {
+ dmu_objset_disown(zsb->z_os, zsb);
+ zfs_sb_free(zsb);
+ }
+
+ return (error);
+}
+EXPORT_SYMBOL(zfs_domount);
+
+/*
+ * Called when an unmount is requested and certain sanity checks have
+ * already passed. At this point no dentries or inodes have been reclaimed
+ * from their respective caches. We drop the extra reference on the .zfs
+ * control directory to allow everything to be reclaimed. All snapshots
+ * must already have been unmounted to reach this point.
+ */
+void
+zfs_preumount(struct super_block *sb)
+{
+ zfs_sb_t *zsb = sb->s_fs_info;
+
+ if (zsb != NULL && zsb->z_ctldir != NULL)
+ zfsctl_destroy(zsb);
+}
+EXPORT_SYMBOL(zfs_preumount);
+
+/*
+ * Called once all other unmount released tear down has occurred.
+ * It is our responsibility to release any remaining infrastructure.
+ */
+/*ARGSUSED*/
+int
+zfs_umount(struct super_block *sb)
+{
+ zfs_sb_t *zsb = sb->s_fs_info;
+ objset_t *os;
+
+ VERIFY(zfs_sb_teardown(zsb, B_TRUE) == 0);
+ os = zsb->z_os;
- VERIFY(zfsvfs_teardown(zfsvfs, B_TRUE) == 0);
- os = zfsvfs->z_os;
+#ifdef HAVE_BDI
+ bdi_destroy(sb->s_bdi);
+#endif /* HAVE_BDI */
/*
* z_os will be NULL if there was an error in
- * attempting to reopen zfsvfs.
+ * attempting to reopen zsb.
*/
if (os != NULL) {
/*
/*
* Finally release the objset
*/
- dmu_objset_disown(os, zfsvfs);
+ dmu_objset_disown(os, zsb);
}
+ zfs_sb_free(zsb);
+ return (0);
+}
+EXPORT_SYMBOL(zfs_umount);
+
+int
+zfs_remount(struct super_block *sb, int *flags, char *data)
+{
/*
- * We can now safely destroy the '.zfs' directory node.
+ * All namespace flags (MNT_*) and super block flags (MS_*) will
+ * be handled by the Linux VFS. Only handle custom options here.
*/
- if (zfsvfs->z_ctldir != NULL)
- zfsctl_destroy(zfsvfs);
-
return (0);
}
-EXPORT_SYMBOL(zfs_umount);
+EXPORT_SYMBOL(zfs_remount);
int
-zfs_vget(vfs_t *vfsp, vnode_t **vpp, fid_t *fidp)
+zfs_vget(struct super_block *sb, struct inode **ipp, fid_t *fidp)
{
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
+ zfs_sb_t *zsb = sb->s_fs_info;
znode_t *zp;
uint64_t object = 0;
uint64_t fid_gen = 0;
uint64_t gen_mask;
uint64_t zp_gen;
- int i, err;
+ int i, err;
- *vpp = NULL;
+ *ipp = NULL;
- ZFS_ENTER(zfsvfs);
+ ZFS_ENTER(zsb);
if (fidp->fid_len == LONG_FID_LEN) {
zfid_long_t *zlfid = (zfid_long_t *)fidp;
for (i = 0; i < sizeof (zlfid->zf_setgen); i++)
setgen |= ((uint64_t)zlfid->zf_setgen[i]) << (8 * i);
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
- err = zfsctl_lookup_objset(vfsp, objsetid, &zfsvfs);
+ err = zfsctl_lookup_objset(sb, objsetid, &zsb);
if (err)
return (EINVAL);
- ZFS_ENTER(zfsvfs);
+
+ ZFS_ENTER(zsb);
}
if (fidp->fid_len == SHORT_FID_LEN || fidp->fid_len == LONG_FID_LEN) {
for (i = 0; i < sizeof (zfid->zf_gen); i++)
fid_gen |= ((uint64_t)zfid->zf_gen[i]) << (8 * i);
} else {
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
return (EINVAL);
}
/* A zero fid_gen means we are in the .zfs control directories */
if (fid_gen == 0 &&
(object == ZFSCTL_INO_ROOT || object == ZFSCTL_INO_SNAPDIR)) {
- *vpp = zfsvfs->z_ctldir;
- ASSERT(*vpp != NULL);
+ *ipp = zsb->z_ctldir;
+ ASSERT(*ipp != NULL);
if (object == ZFSCTL_INO_SNAPDIR) {
- VERIFY(zfsctl_root_lookup(*vpp, "snapshot", vpp, NULL,
- 0, NULL, NULL, NULL, NULL, NULL) == 0);
+ VERIFY(zfsctl_root_lookup(*ipp, "snapshot", ipp,
+ 0, kcred, NULL, NULL) == 0);
} else {
- VN_HOLD(*vpp);
+ igrab(*ipp);
}
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
return (0);
}
gen_mask = -1ULL >> (64 - 8 * i);
dprintf("getting %llu [%u mask %llx]\n", object, fid_gen, gen_mask);
- if ((err = zfs_zget(zfsvfs, object, &zp))) {
- ZFS_EXIT(zfsvfs);
+ if ((err = zfs_zget(zsb, object, &zp))) {
+ ZFS_EXIT(zsb);
return (err);
}
- (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zfsvfs), &zp_gen,
+ (void) sa_lookup(zp->z_sa_hdl, SA_ZPL_GEN(zsb), &zp_gen,
sizeof (uint64_t));
zp_gen = zp_gen & gen_mask;
if (zp_gen == 0)
zp_gen = 1;
if (zp->z_unlinked || zp_gen != fid_gen) {
dprintf("znode gen (%u) != fid gen (%u)\n", zp_gen, fid_gen);
- VN_RELE(ZTOV(zp));
- ZFS_EXIT(zfsvfs);
+ iput(ZTOI(zp));
+ ZFS_EXIT(zsb);
return (EINVAL);
}
- *vpp = ZTOV(zp);
- if (*vpp)
- zfs_inode_update(VTOZ(*vpp));
+ *ipp = ZTOI(zp);
+ if (*ipp)
+ zfs_inode_update(ITOZ(*ipp));
- ZFS_EXIT(zfsvfs);
+ ZFS_EXIT(zsb);
return (0);
}
EXPORT_SYMBOL(zfs_vget);
/*
- * Block out VOPs and close zfsvfs_t::z_os
+ * Block out VFS ops and close zfs_sb_t
*
* Note, if successful, then we return with the 'z_teardown_lock' and
* 'z_teardown_inactive_lock' write held.
*/
int
-zfs_suspend_fs(zfsvfs_t *zfsvfs)
+zfs_suspend_fs(zfs_sb_t *zsb)
{
int error;
- if ((error = zfsvfs_teardown(zfsvfs, B_FALSE)) != 0)
+ if ((error = zfs_sb_teardown(zsb, B_FALSE)) != 0)
return (error);
- dmu_objset_disown(zfsvfs->z_os, zfsvfs);
+
+ dmu_objset_disown(zsb->z_os, zsb);
return (0);
}
EXPORT_SYMBOL(zfs_suspend_fs);
/*
- * Reopen zfsvfs_t::z_os and release VOPs.
+ * Reopen zfs_sb_t and release VFS ops.
*/
int
-zfs_resume_fs(zfsvfs_t *zfsvfs, const char *osname)
+zfs_resume_fs(zfs_sb_t *zsb, const char *osname)
{
int err, err2;
- ASSERT(RRW_WRITE_HELD(&zfsvfs->z_teardown_lock));
- ASSERT(RW_WRITE_HELD(&zfsvfs->z_teardown_inactive_lock));
+ ASSERT(RRW_WRITE_HELD(&zsb->z_teardown_lock));
+ ASSERT(RW_WRITE_HELD(&zsb->z_teardown_inactive_lock));
- err = dmu_objset_own(osname, DMU_OST_ZFS, B_FALSE, zfsvfs,
- &zfsvfs->z_os);
+ err = dmu_objset_own(osname, DMU_OST_ZFS, B_FALSE, zsb, &zsb->z_os);
if (err) {
- zfsvfs->z_os = NULL;
+ zsb->z_os = NULL;
} else {
znode_t *zp;
uint64_t sa_obj = 0;
- err2 = zap_lookup(zfsvfs->z_os, MASTER_NODE_OBJ,
+ err2 = zap_lookup(zsb->z_os, MASTER_NODE_OBJ,
ZFS_SA_ATTRS, 8, 1, &sa_obj);
- if ((err || err2) && zfsvfs->z_version >= ZPL_VERSION_SA)
+ if ((err || err2) && zsb->z_version >= ZPL_VERSION_SA)
goto bail;
- if ((err = sa_setup(zfsvfs->z_os, sa_obj,
- zfs_attr_table, ZPL_END, &zfsvfs->z_attr_table)) != 0)
+ if ((err = sa_setup(zsb->z_os, sa_obj,
+ zfs_attr_table, ZPL_END, &zsb->z_attr_table)) != 0)
goto bail;
- VERIFY(zfsvfs_setup(zfsvfs, B_FALSE) == 0);
+ VERIFY(zfs_sb_setup(zsb, B_FALSE) == 0);
+ zsb->z_rollback_time = jiffies;
/*
- * Attempt to re-establish all the active znodes with
- * their dbufs. If a zfs_rezget() fails, then we'll let
- * any potential callers discover that via ZFS_ENTER_VERIFY_VP
- * when they try to use their znode.
+ * Attempt to re-establish all the active inodes with their
+ * dbufs. If a zfs_rezget() fails, then we unhash the inode
+ * and mark it stale. This prevents a collision if a new
+ * inode/object is created which must use the same inode
+ * number. The stale inode will be be released when the
+ * VFS prunes the dentry holding the remaining references
+ * on the stale inode.
*/
- mutex_enter(&zfsvfs->z_znodes_lock);
- for (zp = list_head(&zfsvfs->z_all_znodes); zp;
- zp = list_next(&zfsvfs->z_all_znodes, zp)) {
- (void) zfs_rezget(zp);
+ mutex_enter(&zsb->z_znodes_lock);
+ for (zp = list_head(&zsb->z_all_znodes); zp;
+ zp = list_next(&zsb->z_all_znodes, zp)) {
+ err2 = zfs_rezget(zp);
+ if (err2) {
+ remove_inode_hash(ZTOI(zp));
+ zp->z_is_stale = B_TRUE;
+ }
}
- mutex_exit(&zfsvfs->z_znodes_lock);
-
+ mutex_exit(&zsb->z_znodes_lock);
}
bail:
- /* release the VOPs */
- rw_exit(&zfsvfs->z_teardown_inactive_lock);
- rrw_exit(&zfsvfs->z_teardown_lock, FTAG);
+ /* release the VFS ops */
+ rw_exit(&zsb->z_teardown_inactive_lock);
+ rrw_exit(&zsb->z_teardown_lock, FTAG);
if (err) {
/*
- * Since we couldn't reopen zfsvfs::z_os, force
- * unmount this file system.
+ * Since we couldn't reopen zfs_sb_t or, setup the
+ * sa framework, force unmount this file system.
*/
- if (vn_vfswlock(zfsvfs->z_vfs->vfs_vnodecovered) == 0)
- (void) dounmount(zfsvfs->z_vfs, MS_FORCE, CRED());
+ if (zsb->z_os)
+ (void) zfs_umount(zsb->z_sb);
}
return (err);
}
EXPORT_SYMBOL(zfs_resume_fs);
-static void
-zfs_freevfs(vfs_t *vfsp)
-{
- zfsvfs_t *zfsvfs = vfsp->vfs_data;
-
- zfsvfs_free(zfsvfs);
-}
-#endif /* HAVE_ZPL */
-
-void
-zfs_init(void)
-{
- zfsctl_init();
- zfs_znode_init();
-
- dmu_objset_register_type(DMU_OST_ZFS, zfs_space_delta_cb);
-}
-
-void
-zfs_fini(void)
-{
- zfsctl_fini();
- zfs_znode_fini();
-}
-
-#ifdef HAVE_ZPL
int
-zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers)
+zfs_set_version(zfs_sb_t *zsb, uint64_t newvers)
{
int error;
- objset_t *os = zfsvfs->z_os;
+ objset_t *os = zsb->z_os;
dmu_tx_t *tx;
if (newvers < ZPL_VERSION_INITIAL || newvers > ZPL_VERSION)
return (EINVAL);
- if (newvers < zfsvfs->z_version)
+ if (newvers < zsb->z_version)
return (EINVAL);
if (zfs_spa_version_map(newvers) >
- spa_version(dmu_objset_spa(zfsvfs->z_os)))
+ spa_version(dmu_objset_spa(zsb->z_os)))
return (ENOTSUP);
tx = dmu_tx_create(os);
dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_FALSE, ZPL_VERSION_STR);
- if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) {
+ if (newvers >= ZPL_VERSION_SA && !zsb->z_use_sa) {
dmu_tx_hold_zap(tx, MASTER_NODE_OBJ, B_TRUE,
ZFS_SA_ATTRS);
dmu_tx_hold_zap(tx, DMU_NEW_OBJECT, FALSE, NULL);
return (error);
}
- if (newvers >= ZPL_VERSION_SA && !zfsvfs->z_use_sa) {
+ if (newvers >= ZPL_VERSION_SA && !zsb->z_use_sa) {
uint64_t sa_obj;
- ASSERT3U(spa_version(dmu_objset_spa(zfsvfs->z_os)), >=,
+ ASSERT3U(spa_version(dmu_objset_spa(zsb->z_os)), >=,
SPA_VERSION_SA);
sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE,
DMU_OT_NONE, 0, tx);
error = zap_add(os, MASTER_NODE_OBJ,
ZFS_SA_ATTRS, 8, 1, &sa_obj, tx);
- ASSERT3U(error, ==, 0);
+ ASSERT0(error);
VERIFY(0 == sa_set_sa_object(os, sa_obj));
sa_register_update_callback(os, zfs_sa_upgrade);
spa_history_log_internal(LOG_DS_UPGRADE,
dmu_objset_spa(os), tx, "oldver=%llu newver=%llu dataset = %llu",
- zfsvfs->z_version, newvers, dmu_objset_id(os));
+ zsb->z_version, newvers, dmu_objset_id(os));
dmu_tx_commit(tx);
- zfsvfs->z_version = newvers;
+ zsb->z_version = newvers;
- if (zfsvfs->z_version >= ZPL_VERSION_FUID)
- zfs_set_fuid_feature(zfsvfs);
+ if (zsb->z_version >= ZPL_VERSION_FUID)
+ zfs_set_fuid_feature(zsb);
return (0);
}
EXPORT_SYMBOL(zfs_set_version);
-#endif /* HAVE_ZPL */
/*
* Read a property stored within the master node.
}
return (error);
}
+EXPORT_SYMBOL(zfs_get_zplprop);
+
+void
+zfs_init(void)
+{
+ zfsctl_init();
+ zfs_znode_init();
+ dmu_objset_register_type(DMU_OST_ZFS, zfs_space_delta_cb);
+ register_filesystem(&zpl_fs_type);
+ (void) arc_add_prune_callback(zpl_prune_sbs, NULL);
+}
+
+void
+zfs_fini(void)
+{
+ unregister_filesystem(&zpl_fs_type);
+ zfs_znode_fini();
+ zfsctl_fini();
+}
git://git.camperquake.de / zfs.git / blobdiff