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-rw-r--r--fs/ocfs2/super.c328
1 files changed, 326 insertions, 2 deletions
diff --git a/fs/ocfs2/super.c b/fs/ocfs2/super.c
index 304b63ac78cf..43ed11345b59 100644
--- a/fs/ocfs2/super.c
+++ b/fs/ocfs2/super.c
@@ -41,6 +41,7 @@
#include <linux/debugfs.h>
#include <linux/mount.h>
#include <linux/seq_file.h>
+#include <linux/quotaops.h>
#define MLOG_MASK_PREFIX ML_SUPER
#include <cluster/masklog.h>
@@ -51,6 +52,7 @@
#include "ocfs1_fs_compat.h"
#include "alloc.h"
+#include "blockcheck.h"
#include "dlmglue.h"
#include "export.h"
#include "extent_map.h"
@@ -65,10 +67,13 @@
#include "uptodate.h"
#include "ver.h"
#include "xattr.h"
+#include "quota.h"
#include "buffer_head_io.h"
static struct kmem_cache *ocfs2_inode_cachep = NULL;
+struct kmem_cache *ocfs2_dquot_cachep;
+struct kmem_cache *ocfs2_qf_chunk_cachep;
/* OCFS2 needs to schedule several differnt types of work which
* require cluster locking, disk I/O, recovery waits, etc. Since these
@@ -124,6 +129,9 @@ static int ocfs2_get_sector(struct super_block *sb,
static void ocfs2_write_super(struct super_block *sb);
static struct inode *ocfs2_alloc_inode(struct super_block *sb);
static void ocfs2_destroy_inode(struct inode *inode);
+static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend);
+static int ocfs2_enable_quotas(struct ocfs2_super *osb);
+static void ocfs2_disable_quotas(struct ocfs2_super *osb);
static const struct super_operations ocfs2_sops = {
.statfs = ocfs2_statfs,
@@ -137,6 +145,8 @@ static const struct super_operations ocfs2_sops = {
.put_super = ocfs2_put_super,
.remount_fs = ocfs2_remount,
.show_options = ocfs2_show_options,
+ .quota_read = ocfs2_quota_read,
+ .quota_write = ocfs2_quota_write,
};
enum {
@@ -158,6 +168,10 @@ enum {
Opt_user_xattr,
Opt_nouser_xattr,
Opt_inode64,
+ Opt_acl,
+ Opt_noacl,
+ Opt_usrquota,
+ Opt_grpquota,
Opt_err,
};
@@ -180,6 +194,10 @@ static const match_table_t tokens = {
{Opt_user_xattr, "user_xattr"},
{Opt_nouser_xattr, "nouser_xattr"},
{Opt_inode64, "inode64"},
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
+ {Opt_usrquota, "usrquota"},
+ {Opt_grpquota, "grpquota"},
{Opt_err, NULL}
};
@@ -221,6 +239,19 @@ static int ocfs2_sync_fs(struct super_block *sb, int wait)
return 0;
}
+static int ocfs2_need_system_inode(struct ocfs2_super *osb, int ino)
+{
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_USRQUOTA)
+ && (ino == USER_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_USER_QUOTA_SYSTEM_INODE))
+ return 0;
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(osb->sb, OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)
+ && (ino == GROUP_QUOTA_SYSTEM_INODE
+ || ino == LOCAL_GROUP_QUOTA_SYSTEM_INODE))
+ return 0;
+ return 1;
+}
+
static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
{
struct inode *new = NULL;
@@ -247,6 +278,8 @@ static int ocfs2_init_global_system_inodes(struct ocfs2_super *osb)
for (i = OCFS2_FIRST_ONLINE_SYSTEM_INODE;
i <= OCFS2_LAST_GLOBAL_SYSTEM_INODE; i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
@@ -277,6 +310,8 @@ static int ocfs2_init_local_system_inodes(struct ocfs2_super *osb)
for (i = OCFS2_LAST_GLOBAL_SYSTEM_INODE + 1;
i < NUM_SYSTEM_INODES;
i++) {
+ if (!ocfs2_need_system_inode(osb, i))
+ continue;
new = ocfs2_get_system_file_inode(osb, i, osb->slot_num);
if (!new) {
ocfs2_release_system_inodes(osb);
@@ -426,6 +461,12 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
/* We're going to/from readonly mode. */
if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY)) {
+ /* Disable quota accounting before remounting RO */
+ if (*flags & MS_RDONLY) {
+ ret = ocfs2_susp_quotas(osb, 0);
+ if (ret < 0)
+ goto out;
+ }
/* Lock here so the check of HARD_RO and the potential
* setting of SOFT_RO is atomic. */
spin_lock(&osb->osb_lock);
@@ -461,11 +502,28 @@ static int ocfs2_remount(struct super_block *sb, int *flags, char *data)
}
unlock_osb:
spin_unlock(&osb->osb_lock);
+ /* Enable quota accounting after remounting RW */
+ if (!ret && !(*flags & MS_RDONLY)) {
+ if (sb_any_quota_suspended(sb))
+ ret = ocfs2_susp_quotas(osb, 1);
+ else
+ ret = ocfs2_enable_quotas(osb);
+ if (ret < 0) {
+ /* Return back changes... */
+ spin_lock(&osb->osb_lock);
+ sb->s_flags |= MS_RDONLY;
+ osb->osb_flags |= OCFS2_OSB_SOFT_RO;
+ spin_unlock(&osb->osb_lock);
+ goto out;
+ }
+ }
}
if (!ret) {
/* Only save off the new mount options in case of a successful
* remount. */
+ if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
+ parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
@@ -619,6 +677,131 @@ static int ocfs2_verify_userspace_stack(struct ocfs2_super *osb,
return 0;
}
+static int ocfs2_susp_quotas(struct ocfs2_super *osb, int unsuspend)
+{
+ int type;
+ struct super_block *sb = osb->sb;
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+ int status = 0;
+
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ continue;
+ if (unsuspend)
+ status = vfs_quota_enable(
+ sb_dqopt(sb)->files[type],
+ type, QFMT_OCFS2,
+ DQUOT_SUSPENDED);
+ else
+ status = vfs_quota_disable(sb, type,
+ DQUOT_SUSPENDED);
+ if (status < 0)
+ break;
+ }
+ if (status < 0)
+ mlog(ML_ERROR, "Failed to suspend/unsuspend quotas on "
+ "remount (error = %d).\n", status);
+ return status;
+}
+
+static int ocfs2_enable_quotas(struct ocfs2_super *osb)
+{
+ struct inode *inode[MAXQUOTAS] = { NULL, NULL };
+ struct super_block *sb = osb->sb;
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+ unsigned int ino[MAXQUOTAS] = { LOCAL_USER_QUOTA_SYSTEM_INODE,
+ LOCAL_GROUP_QUOTA_SYSTEM_INODE };
+ int status;
+ int type;
+
+ sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE | DQUOT_NEGATIVE_USAGE;
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ continue;
+ inode[type] = ocfs2_get_system_file_inode(osb, ino[type],
+ osb->slot_num);
+ if (!inode[type]) {
+ status = -ENOENT;
+ goto out_quota_off;
+ }
+ status = vfs_quota_enable(inode[type], type, QFMT_OCFS2,
+ DQUOT_USAGE_ENABLED);
+ if (status < 0)
+ goto out_quota_off;
+ }
+
+ for (type = 0; type < MAXQUOTAS; type++)
+ iput(inode[type]);
+ return 0;
+out_quota_off:
+ ocfs2_disable_quotas(osb);
+ for (type = 0; type < MAXQUOTAS; type++)
+ iput(inode[type]);
+ mlog_errno(status);
+ return status;
+}
+
+static void ocfs2_disable_quotas(struct ocfs2_super *osb)
+{
+ int type;
+ struct inode *inode;
+ struct super_block *sb = osb->sb;
+
+ /* We mostly ignore errors in this function because there's not much
+ * we can do when we see them */
+ for (type = 0; type < MAXQUOTAS; type++) {
+ if (!sb_has_quota_loaded(sb, type))
+ continue;
+ inode = igrab(sb->s_dquot.files[type]);
+ /* Turn off quotas. This will remove all dquot structures from
+ * memory and so they will be automatically synced to global
+ * quota files */
+ vfs_quota_disable(sb, type, DQUOT_USAGE_ENABLED |
+ DQUOT_LIMITS_ENABLED);
+ if (!inode)
+ continue;
+ iput(inode);
+ }
+}
+
+/* Handle quota on quotactl */
+static int ocfs2_quota_on(struct super_block *sb, int type, int format_id,
+ char *path, int remount)
+{
+ unsigned int feature[MAXQUOTAS] = { OCFS2_FEATURE_RO_COMPAT_USRQUOTA,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA};
+
+ if (!OCFS2_HAS_RO_COMPAT_FEATURE(sb, feature[type]))
+ return -EINVAL;
+
+ if (remount)
+ return 0; /* Just ignore it has been handled in
+ * ocfs2_remount() */
+ return vfs_quota_enable(sb_dqopt(sb)->files[type], type,
+ format_id, DQUOT_LIMITS_ENABLED);
+}
+
+/* Handle quota off quotactl */
+static int ocfs2_quota_off(struct super_block *sb, int type, int remount)
+{
+ if (remount)
+ return 0; /* Ignore now and handle later in
+ * ocfs2_remount() */
+ return vfs_quota_disable(sb, type, DQUOT_LIMITS_ENABLED);
+}
+
+static struct quotactl_ops ocfs2_quotactl_ops = {
+ .quota_on = ocfs2_quota_on,
+ .quota_off = ocfs2_quota_off,
+ .quota_sync = vfs_quota_sync,
+ .get_info = vfs_get_dqinfo,
+ .set_info = vfs_set_dqinfo,
+ .get_dqblk = vfs_get_dqblk,
+ .set_dqblk = vfs_set_dqblk,
+};
+
static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
{
struct dentry *root;
@@ -651,12 +834,32 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
}
brelse(bh);
bh = NULL;
+
+ if (!(osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR))
+ parsed_options.mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
+
osb->s_mount_opt = parsed_options.mount_opt;
osb->s_atime_quantum = parsed_options.atime_quantum;
osb->preferred_slot = parsed_options.slot;
osb->osb_commit_interval = parsed_options.commit_interval;
osb->local_alloc_default_bits = ocfs2_megabytes_to_clusters(sb, parsed_options.localalloc_opt);
osb->local_alloc_bits = osb->local_alloc_default_bits;
+ if (osb->s_mount_opt & OCFS2_MOUNT_USRQUOTA &&
+ !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+ status = -EINVAL;
+ mlog(ML_ERROR, "User quotas were requested, but this "
+ "filesystem does not have the feature enabled.\n");
+ goto read_super_error;
+ }
+ if (osb->s_mount_opt & OCFS2_MOUNT_GRPQUOTA &&
+ !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+ status = -EINVAL;
+ mlog(ML_ERROR, "Group quotas were requested, but this "
+ "filesystem does not have the feature enabled.\n");
+ goto read_super_error;
+ }
status = ocfs2_verify_userspace_stack(osb, &parsed_options);
if (status)
@@ -664,6 +867,9 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
sb->s_magic = OCFS2_SUPER_MAGIC;
+ sb->s_flags = (sb->s_flags & ~MS_POSIXACL) |
+ ((osb->s_mount_opt & OCFS2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
+
/* Hard readonly mode only if: bdev_read_only, MS_RDONLY,
* heartbeat=none */
if (bdev_read_only(sb->s_bdev)) {
@@ -758,6 +964,28 @@ static int ocfs2_fill_super(struct super_block *sb, void *data, int silent)
atomic_set(&osb->vol_state, VOLUME_MOUNTED);
wake_up(&osb->osb_mount_event);
+ /* Now we can initialize quotas because we can afford to wait
+ * for cluster locks recovery now. That also means that truncation
+ * log recovery can happen but that waits for proper quota setup */
+ if (!(sb->s_flags & MS_RDONLY)) {
+ status = ocfs2_enable_quotas(osb);
+ if (status < 0) {
+ /* We have to err-out specially here because
+ * s_root is already set */
+ mlog_errno(status);
+ atomic_set(&osb->vol_state, VOLUME_DISABLED);
+ wake_up(&osb->osb_mount_event);
+ mlog_exit(status);
+ return status;
+ }
+ }
+
+ ocfs2_complete_quota_recovery(osb);
+
+ /* Now we wake up again for processes waiting for quotas */
+ atomic_set(&osb->vol_state, VOLUME_MOUNTED_QUOTAS);
+ wake_up(&osb->osb_mount_event);
+
mlog_exit(status);
return status;
@@ -945,6 +1173,41 @@ static int ocfs2_parse_options(struct super_block *sb,
case Opt_inode64:
mopt->mount_opt |= OCFS2_MOUNT_INODE64;
break;
+ case Opt_usrquota:
+ /* We check only on remount, otherwise features
+ * aren't yet initialized. */
+ if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_USRQUOTA)) {
+ mlog(ML_ERROR, "User quota requested but "
+ "filesystem feature is not set\n");
+ status = 0;
+ goto bail;
+ }
+ mopt->mount_opt |= OCFS2_MOUNT_USRQUOTA;
+ break;
+ case Opt_grpquota:
+ if (is_remount && !OCFS2_HAS_RO_COMPAT_FEATURE(sb,
+ OCFS2_FEATURE_RO_COMPAT_GRPQUOTA)) {
+ mlog(ML_ERROR, "Group quota requested but "
+ "filesystem feature is not set\n");
+ status = 0;
+ goto bail;
+ }
+ mopt->mount_opt |= OCFS2_MOUNT_GRPQUOTA;
+ break;
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ case Opt_acl:
+ mopt->mount_opt |= OCFS2_MOUNT_POSIX_ACL;
+ break;
+ case Opt_noacl:
+ mopt->mount_opt &= ~OCFS2_MOUNT_POSIX_ACL;
+ break;
+#else
+ case Opt_acl:
+ case Opt_noacl:
+ printk(KERN_INFO "ocfs2 (no)acl options not supported\n");
+ break;
+#endif
default:
mlog(ML_ERROR,
"Unrecognized mount option \"%s\" "
@@ -1008,6 +1271,10 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
if (osb->osb_cluster_stack[0])
seq_printf(s, ",cluster_stack=%.*s", OCFS2_STACK_LABEL_LEN,
osb->osb_cluster_stack);
+ if (opts & OCFS2_MOUNT_USRQUOTA)
+ seq_printf(s, ",usrquota");
+ if (opts & OCFS2_MOUNT_GRPQUOTA)
+ seq_printf(s, ",grpquota");
if (opts & OCFS2_MOUNT_NOUSERXATTR)
seq_printf(s, ",nouser_xattr");
@@ -1017,6 +1284,13 @@ static int ocfs2_show_options(struct seq_file *s, struct vfsmount *mnt)
if (opts & OCFS2_MOUNT_INODE64)
seq_printf(s, ",inode64");
+#ifdef CONFIG_OCFS2_FS_POSIX_ACL
+ if (opts & OCFS2_MOUNT_POSIX_ACL)
+ seq_printf(s, ",acl");
+ else
+ seq_printf(s, ",noacl");
+#endif
+
return 0;
}
@@ -1052,10 +1326,16 @@ static int __init ocfs2_init(void)
mlog(ML_ERROR, "Unable to create ocfs2 debugfs root.\n");
}
+ status = ocfs2_quota_setup();
+ if (status)
+ goto leave;
+
ocfs2_set_locking_protocol();
+ status = register_quota_format(&ocfs2_quota_format);
leave:
if (status < 0) {
+ ocfs2_quota_shutdown();
ocfs2_free_mem_caches();
exit_ocfs2_uptodate_cache();
}
@@ -1072,11 +1352,15 @@ static void __exit ocfs2_exit(void)
{
mlog_entry_void();
+ ocfs2_quota_shutdown();
+
if (ocfs2_wq) {
flush_workqueue(ocfs2_wq);
destroy_workqueue(ocfs2_wq);
}
+ unregister_quota_format(&ocfs2_quota_format);
+
debugfs_remove(ocfs2_debugfs_root);
ocfs2_free_mem_caches();
@@ -1192,8 +1476,27 @@ static int ocfs2_initialize_mem_caches(void)
(SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
SLAB_MEM_SPREAD),
ocfs2_inode_init_once);
- if (!ocfs2_inode_cachep)
+ ocfs2_dquot_cachep = kmem_cache_create("ocfs2_dquot_cache",
+ sizeof(struct ocfs2_dquot),
+ 0,
+ (SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT|
+ SLAB_MEM_SPREAD),
+ NULL);
+ ocfs2_qf_chunk_cachep = kmem_cache_create("ocfs2_qf_chunk_cache",
+ sizeof(struct ocfs2_quota_chunk),
+ 0,
+ (SLAB_RECLAIM_ACCOUNT|SLAB_MEM_SPREAD),
+ NULL);
+ if (!ocfs2_inode_cachep || !ocfs2_dquot_cachep ||
+ !ocfs2_qf_chunk_cachep) {
+ if (ocfs2_inode_cachep)
+ kmem_cache_destroy(ocfs2_inode_cachep);
+ if (ocfs2_dquot_cachep)
+ kmem_cache_destroy(ocfs2_dquot_cachep);
+ if (ocfs2_qf_chunk_cachep)
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
return -ENOMEM;
+ }
return 0;
}
@@ -1202,8 +1505,15 @@ static void ocfs2_free_mem_caches(void)
{
if (ocfs2_inode_cachep)
kmem_cache_destroy(ocfs2_inode_cachep);
-
ocfs2_inode_cachep = NULL;
+
+ if (ocfs2_dquot_cachep)
+ kmem_cache_destroy(ocfs2_dquot_cachep);
+ ocfs2_dquot_cachep = NULL;
+
+ if (ocfs2_qf_chunk_cachep)
+ kmem_cache_destroy(ocfs2_qf_chunk_cachep);
+ ocfs2_qf_chunk_cachep = NULL;
}
static int ocfs2_get_sector(struct super_block *sb,
@@ -1303,6 +1613,8 @@ static void ocfs2_dismount_volume(struct super_block *sb, int mnt_err)
osb = OCFS2_SB(sb);
BUG_ON(!osb);
+ ocfs2_disable_quotas(osb);
+
ocfs2_shutdown_local_alloc(osb);
ocfs2_truncate_log_shutdown(osb);
@@ -1413,6 +1725,8 @@ static int ocfs2_initialize_super(struct super_block *sb,
sb->s_fs_info = osb;
sb->s_op = &ocfs2_sops;
sb->s_export_op = &ocfs2_export_ops;
+ sb->s_qcop = &ocfs2_quotactl_ops;
+ sb->dq_op = &ocfs2_quota_operations;
sb->s_xattr = ocfs2_xattr_handlers;
sb->s_time_gran = 1;
sb->s_flags |= MS_NOATIME;
@@ -1676,6 +1990,15 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
if (memcmp(di->i_signature, OCFS2_SUPER_BLOCK_SIGNATURE,
strlen(OCFS2_SUPER_BLOCK_SIGNATURE)) == 0) {
+ /* We have to do a raw check of the feature here */
+ if (le32_to_cpu(di->id2.i_super.s_feature_incompat) &
+ OCFS2_FEATURE_INCOMPAT_META_ECC) {
+ status = ocfs2_block_check_validate(bh->b_data,
+ bh->b_size,
+ &di->i_check);
+ if (status)
+ goto out;
+ }
status = -EINVAL;
if ((1 << le32_to_cpu(di->id2.i_super.s_blocksize_bits)) != blksz) {
mlog(ML_ERROR, "found superblock with incorrect block "
@@ -1717,6 +2040,7 @@ static int ocfs2_verify_volume(struct ocfs2_dinode *di,
}
}
+out:
mlog_exit(status);
return status;
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.