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-rw-r--r--fs/quota/Kconfig7
-rw-r--r--fs/quota/Makefile2
-rw-r--r--fs/quota/dquot.c255
-rw-r--r--fs/quota/kqid.c132
-rw-r--r--fs/quota/netlink.c26
-rw-r--r--fs/quota/quota.c86
-rw-r--r--fs/quota/quota_tree.c22
-rw-r--r--fs/quota/quota_v1.c12
-rw-r--r--fs/quota/quota_v2.c26
9 files changed, 429 insertions, 139 deletions
diff --git a/fs/quota/Kconfig b/fs/quota/Kconfig
index 880fd988436..c51df1dd237 100644
--- a/fs/quota/Kconfig
+++ b/fs/quota/Kconfig
@@ -8,9 +8,10 @@ config QUOTA
help
If you say Y here, you will be able to set per user limits for disk
usage (also called disk quotas). Currently, it works for the
- ext2, ext3, and reiserfs file system. ext3 also supports journalled
- quotas for which you don't need to run quotacheck(8) after an unclean
- shutdown.
+ ext2, ext3, ext4, jfs, ocfs2 and reiserfs file systems.
+ Note that gfs2 and xfs use their own quota system.
+ Ext3, ext4 and reiserfs also support journaled quotas for which
+ you don't need to run quotacheck(8) after an unclean shutdown.
For further details, read the Quota mini-HOWTO, available from
<http://www.tldp.org/docs.html#howto>, or the documentation provided
with the quota tools. Probably the quota support is only useful for
diff --git a/fs/quota/Makefile b/fs/quota/Makefile
index 5f9e9e276af..c66c37cdaa3 100644
--- a/fs/quota/Makefile
+++ b/fs/quota/Makefile
@@ -2,6 +2,6 @@ obj-$(CONFIG_QUOTA) += dquot.o
obj-$(CONFIG_QFMT_V1) += quota_v1.o
obj-$(CONFIG_QFMT_V2) += quota_v2.o
obj-$(CONFIG_QUOTA_TREE) += quota_tree.o
-obj-$(CONFIG_QUOTACTL) += quota.o
+obj-$(CONFIG_QUOTACTL) += quota.o kqid.o
obj-$(CONFIG_QUOTACTL_COMPAT) += compat.o
obj-$(CONFIG_QUOTA_NETLINK_INTERFACE) += netlink.o
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 10cbe841cb7..7f30bdc57d1 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -78,7 +78,7 @@
#include <linux/quotaops.h>
#include "../internal.h" /* ugh */
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
/*
* There are three quota SMP locks. dq_list_lock protects all lists with quotas
@@ -253,8 +253,10 @@ static qsize_t inode_get_rsv_space(struct inode *inode);
static void __dquot_initialize(struct inode *inode, int type);
static inline unsigned int
-hashfn(const struct super_block *sb, unsigned int id, int type)
+hashfn(const struct super_block *sb, struct kqid qid)
{
+ unsigned int id = from_kqid(&init_user_ns, qid);
+ int type = qid.type;
unsigned long tmp;
tmp = (((unsigned long)sb>>L1_CACHE_SHIFT) ^ id) * (MAXQUOTAS - type);
@@ -267,7 +269,7 @@ hashfn(const struct super_block *sb, unsigned int id, int type)
static inline void insert_dquot_hash(struct dquot *dquot)
{
struct hlist_head *head;
- head = dquot_hash + hashfn(dquot->dq_sb, dquot->dq_id, dquot->dq_type);
+ head = dquot_hash + hashfn(dquot->dq_sb, dquot->dq_id);
hlist_add_head(&dquot->dq_hash, head);
}
@@ -277,15 +279,14 @@ static inline void remove_dquot_hash(struct dquot *dquot)
}
static struct dquot *find_dquot(unsigned int hashent, struct super_block *sb,
- unsigned int id, int type)
+ struct kqid qid)
{
struct hlist_node *node;
struct dquot *dquot;
hlist_for_each (node, dquot_hash+hashent) {
dquot = hlist_entry(node, struct dquot, dq_hash);
- if (dquot->dq_sb == sb && dquot->dq_id == id &&
- dquot->dq_type == type)
+ if (dquot->dq_sb == sb && qid_eq(dquot->dq_id, qid))
return dquot;
}
return NULL;
@@ -351,7 +352,7 @@ int dquot_mark_dquot_dirty(struct dquot *dquot)
spin_lock(&dq_list_lock);
if (!test_and_set_bit(DQ_MOD_B, &dquot->dq_flags)) {
list_add(&dquot->dq_dirty, &sb_dqopt(dquot->dq_sb)->
- info[dquot->dq_type].dqi_dirty_list);
+ info[dquot->dq_id.type].dqi_dirty_list);
ret = 0;
}
spin_unlock(&dq_list_lock);
@@ -410,17 +411,17 @@ int dquot_acquire(struct dquot *dquot)
mutex_lock(&dquot->dq_lock);
mutex_lock(&dqopt->dqio_mutex);
if (!test_bit(DQ_READ_B, &dquot->dq_flags))
- ret = dqopt->ops[dquot->dq_type]->read_dqblk(dquot);
+ ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot);
if (ret < 0)
goto out_iolock;
set_bit(DQ_READ_B, &dquot->dq_flags);
/* Instantiate dquot if needed */
if (!test_bit(DQ_ACTIVE_B, &dquot->dq_flags) && !dquot->dq_off) {
- ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
+ ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot);
/* Write the info if needed */
- if (info_dirty(&dqopt->info[dquot->dq_type])) {
- ret2 = dqopt->ops[dquot->dq_type]->write_file_info(
- dquot->dq_sb, dquot->dq_type);
+ if (info_dirty(&dqopt->info[dquot->dq_id.type])) {
+ ret2 = dqopt->ops[dquot->dq_id.type]->write_file_info(
+ dquot->dq_sb, dquot->dq_id.type);
}
if (ret < 0)
goto out_iolock;
@@ -455,7 +456,7 @@ int dquot_commit(struct dquot *dquot)
/* Inactive dquot can be only if there was error during read/init
* => we have better not writing it */
if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags))
- ret = dqopt->ops[dquot->dq_type]->commit_dqblk(dquot);
+ ret = dqopt->ops[dquot->dq_id.type]->commit_dqblk(dquot);
else
ret = -EIO;
out_sem:
@@ -477,12 +478,12 @@ int dquot_release(struct dquot *dquot)
if (atomic_read(&dquot->dq_count) > 1)
goto out_dqlock;
mutex_lock(&dqopt->dqio_mutex);
- if (dqopt->ops[dquot->dq_type]->release_dqblk) {
- ret = dqopt->ops[dquot->dq_type]->release_dqblk(dquot);
+ if (dqopt->ops[dquot->dq_id.type]->release_dqblk) {
+ ret = dqopt->ops[dquot->dq_id.type]->release_dqblk(dquot);
/* Write the info */
- if (info_dirty(&dqopt->info[dquot->dq_type])) {
- ret2 = dqopt->ops[dquot->dq_type]->write_file_info(
- dquot->dq_sb, dquot->dq_type);
+ if (info_dirty(&dqopt->info[dquot->dq_id.type])) {
+ ret2 = dqopt->ops[dquot->dq_id.type]->write_file_info(
+ dquot->dq_sb, dquot->dq_id.type);
}
if (ret >= 0)
ret = ret2;
@@ -521,13 +522,13 @@ restart:
list_for_each_entry_safe(dquot, tmp, &inuse_list, dq_inuse) {
if (dquot->dq_sb != sb)
continue;
- if (dquot->dq_type != type)
+ if (dquot->dq_id.type != type)
continue;
/* Wait for dquot users */
if (atomic_read(&dquot->dq_count)) {
DEFINE_WAIT(wait);
- atomic_inc(&dquot->dq_count);
+ dqgrab(dquot);
prepare_to_wait(&dquot->dq_wait_unused, &wait,
TASK_UNINTERRUPTIBLE);
spin_unlock(&dq_list_lock);
@@ -580,9 +581,17 @@ int dquot_scan_active(struct super_block *sb,
dqstats_inc(DQST_LOOKUPS);
dqput(old_dquot);
old_dquot = dquot;
- ret = fn(dquot, priv);
- if (ret < 0)
- goto out;
+ /*
+ * ->release_dquot() can be racing with us. Our reference
+ * protects us from new calls to it so just wait for any
+ * outstanding call and recheck the DQ_ACTIVE_B after that.
+ */
+ wait_on_dquot(dquot);
+ if (test_bit(DQ_ACTIVE_B, &dquot->dq_flags)) {
+ ret = fn(dquot, priv);
+ if (ret < 0)
+ goto out;
+ }
spin_lock(&dq_list_lock);
/* We are safe to continue now because our dquot could not
* be moved out of the inuse list while we hold the reference */
@@ -595,12 +604,14 @@ out:
}
EXPORT_SYMBOL(dquot_scan_active);
-int dquot_quota_sync(struct super_block *sb, int type, int wait)
+/* Write all dquot structures to quota files */
+int dquot_writeback_dquots(struct super_block *sb, int type)
{
struct list_head *dirty;
struct dquot *dquot;
struct quota_info *dqopt = sb_dqopt(sb);
int cnt;
+ int err, ret = 0;
mutex_lock(&dqopt->dqonoff_mutex);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
@@ -621,10 +632,12 @@ int dquot_quota_sync(struct super_block *sb, int type, int wait)
/* Now we have active dquot from which someone is
* holding reference so we can safely just increase
* use count */
- atomic_inc(&dquot->dq_count);
+ dqgrab(dquot);
spin_unlock(&dq_list_lock);
dqstats_inc(DQST_LOOKUPS);
- sb->dq_op->write_dquot(dquot);
+ err = sb->dq_op->write_dquot(dquot);
+ if (!ret && err)
+ err = ret;
dqput(dquot);
spin_lock(&dq_list_lock);
}
@@ -638,7 +651,21 @@ int dquot_quota_sync(struct super_block *sb, int type, int wait)
dqstats_inc(DQST_SYNCS);
mutex_unlock(&dqopt->dqonoff_mutex);
- if (!wait || (dqopt->flags & DQUOT_QUOTA_SYS_FILE))
+ return ret;
+}
+EXPORT_SYMBOL(dquot_writeback_dquots);
+
+/* Write all dquot structures to disk and make them visible from userspace */
+int dquot_quota_sync(struct super_block *sb, int type)
+{
+ struct quota_info *dqopt = sb_dqopt(sb);
+ int cnt;
+ int ret;
+
+ ret = dquot_writeback_dquots(sb, type);
+ if (ret)
+ return ret;
+ if (dqopt->flags & DQUOT_QUOTA_SYS_FILE)
return 0;
/* This is not very clever (and fast) but currently I don't know about
@@ -668,45 +695,39 @@ int dquot_quota_sync(struct super_block *sb, int type, int wait)
}
EXPORT_SYMBOL(dquot_quota_sync);
-/* Free unused dquots from cache */
-static void prune_dqcache(int count)
+static unsigned long
+dqcache_shrink_scan(struct shrinker *shrink, struct shrink_control *sc)
{
struct list_head *head;
struct dquot *dquot;
+ unsigned long freed = 0;
+ spin_lock(&dq_list_lock);
head = free_dquots.prev;
- while (head != &free_dquots && count) {
+ while (head != &free_dquots && sc->nr_to_scan) {
dquot = list_entry(head, struct dquot, dq_free);
remove_dquot_hash(dquot);
remove_free_dquot(dquot);
remove_inuse(dquot);
do_destroy_dquot(dquot);
- count--;
+ sc->nr_to_scan--;
+ freed++;
head = free_dquots.prev;
}
+ spin_unlock(&dq_list_lock);
+ return freed;
}
-/*
- * This is called from kswapd when we think we need some
- * more memory
- */
-static int shrink_dqcache_memory(struct shrinker *shrink,
- struct shrink_control *sc)
+static unsigned long
+dqcache_shrink_count(struct shrinker *shrink, struct shrink_control *sc)
{
- int nr = sc->nr_to_scan;
-
- if (nr) {
- spin_lock(&dq_list_lock);
- prune_dqcache(nr);
- spin_unlock(&dq_list_lock);
- }
- return ((unsigned)
- percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS])
- /100) * sysctl_vfs_cache_pressure;
+ return vfs_pressure_ratio(
+ percpu_counter_read_positive(&dqstats.counter[DQST_FREE_DQUOTS]));
}
static struct shrinker dqcache_shrinker = {
- .shrink = shrink_dqcache_memory,
+ .count_objects = dqcache_shrink_count,
+ .scan_objects = dqcache_shrink_scan,
.seeks = DEFAULT_SEEKS,
};
@@ -723,7 +744,8 @@ void dqput(struct dquot *dquot)
#ifdef CONFIG_QUOTA_DEBUG
if (!atomic_read(&dquot->dq_count)) {
quota_error(dquot->dq_sb, "trying to free free dquot of %s %d",
- quotatypes[dquot->dq_type], dquot->dq_id);
+ quotatypes[dquot->dq_id.type],
+ from_kqid(&init_user_ns, dquot->dq_id));
BUG();
}
#endif
@@ -734,7 +756,7 @@ we_slept:
/* We have more than one user... nothing to do */
atomic_dec(&dquot->dq_count);
/* Releasing dquot during quotaoff phase? */
- if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_type) &&
+ if (!sb_has_quota_active(dquot->dq_sb, dquot->dq_id.type) &&
atomic_read(&dquot->dq_count) == 1)
wake_up(&dquot->dq_wait_unused);
spin_unlock(&dq_list_lock);
@@ -797,7 +819,7 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
INIT_LIST_HEAD(&dquot->dq_dirty);
init_waitqueue_head(&dquot->dq_wait_unused);
dquot->dq_sb = sb;
- dquot->dq_type = type;
+ dquot->dq_id = make_kqid_invalid(type);
atomic_set(&dquot->dq_count, 1);
return dquot;
@@ -811,35 +833,35 @@ static struct dquot *get_empty_dquot(struct super_block *sb, int type)
* a) checking for quota flags under dq_list_lock and
* b) getting a reference to dquot before we release dq_list_lock
*/
-struct dquot *dqget(struct super_block *sb, unsigned int id, int type)
+struct dquot *dqget(struct super_block *sb, struct kqid qid)
{
- unsigned int hashent = hashfn(sb, id, type);
+ unsigned int hashent = hashfn(sb, qid);
struct dquot *dquot = NULL, *empty = NULL;
- if (!sb_has_quota_active(sb, type))
+ if (!sb_has_quota_active(sb, qid.type))
return NULL;
we_slept:
spin_lock(&dq_list_lock);
spin_lock(&dq_state_lock);
- if (!sb_has_quota_active(sb, type)) {
+ if (!sb_has_quota_active(sb, qid.type)) {
spin_unlock(&dq_state_lock);
spin_unlock(&dq_list_lock);
goto out;
}
spin_unlock(&dq_state_lock);
- dquot = find_dquot(hashent, sb, id, type);
+ dquot = find_dquot(hashent, sb, qid);
if (!dquot) {
if (!empty) {
spin_unlock(&dq_list_lock);
- empty = get_empty_dquot(sb, type);
+ empty = get_empty_dquot(sb, qid.type);
if (!empty)
schedule(); /* Try to wait for a moment... */
goto we_slept;
}
dquot = empty;
empty = NULL;
- dquot->dq_id = id;
+ dquot->dq_id = qid;
/* all dquots go on the inuse_list */
put_inuse(dquot);
/* hash it first so it can be found */
@@ -1074,6 +1096,14 @@ static void dquot_claim_reserved_space(struct dquot *dquot, qsize_t number)
dquot->dq_dqb.dqb_rsvspace -= number;
}
+static void dquot_reclaim_reserved_space(struct dquot *dquot, qsize_t number)
+{
+ if (WARN_ON_ONCE(dquot->dq_dqb.dqb_curspace < number))
+ number = dquot->dq_dqb.dqb_curspace;
+ dquot->dq_dqb.dqb_rsvspace += number;
+ dquot->dq_dqb.dqb_curspace -= number;
+}
+
static inline
void dquot_free_reserved_space(struct dquot *dquot, qsize_t number)
{
@@ -1111,8 +1141,7 @@ static void dquot_decr_space(struct dquot *dquot, qsize_t number)
struct dquot_warn {
struct super_block *w_sb;
- qid_t w_dq_id;
- short w_dq_type;
+ struct kqid w_dq_id;
short w_type;
};
@@ -1136,11 +1165,13 @@ static int need_print_warning(struct dquot_warn *warn)
if (!flag_print_warnings)
return 0;
- switch (warn->w_dq_type) {
+ switch (warn->w_dq_id.type) {
case USRQUOTA:
- return current_fsuid() == warn->w_dq_id;
+ return uid_eq(current_fsuid(), warn->w_dq_id.uid);
case GRPQUOTA:
- return in_group_p(warn->w_dq_id);
+ return in_group_p(warn->w_dq_id.gid);
+ case PRJQUOTA: /* Never taken... Just make gcc happy */
+ return 0;
}
return 0;
}
@@ -1166,7 +1197,7 @@ static void print_warning(struct dquot_warn *warn)
tty_write_message(tty, ": warning, ");
else
tty_write_message(tty, ": write failed, ");
- tty_write_message(tty, quotatypes[warn->w_dq_type]);
+ tty_write_message(tty, quotatypes[warn->w_dq_id.type]);
switch (warntype) {
case QUOTA_NL_IHARDWARN:
msg = " file limit reached.\r\n";
@@ -1200,7 +1231,6 @@ static void prepare_warning(struct dquot_warn *warn, struct dquot *dquot,
warn->w_type = warntype;
warn->w_sb = dquot->dq_sb;
warn->w_dq_id = dquot->dq_id;
- warn->w_dq_type = dquot->dq_type;
}
/*
@@ -1218,14 +1248,14 @@ static void flush_warnings(struct dquot_warn *warn)
#ifdef CONFIG_PRINT_QUOTA_WARNING
print_warning(&warn[i]);
#endif
- quota_send_warning(warn[i].w_dq_type, warn[i].w_dq_id,
+ quota_send_warning(warn[i].w_dq_id,
warn[i].w_sb->s_dev, warn[i].w_type);
}
}
static int ignore_hardlimit(struct dquot *dquot)
{
- struct mem_dqinfo *info = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_type];
+ struct mem_dqinfo *info = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type];
return capable(CAP_SYS_RESOURCE) &&
(info->dqi_format->qf_fmt_id != QFMT_VFS_OLD ||
@@ -1238,7 +1268,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes,
{
qsize_t newinodes = dquot->dq_dqb.dqb_curinodes + inodes;
- if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type) ||
+ if (!sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_id.type) ||
test_bit(DQ_FAKE_B, &dquot->dq_flags))
return 0;
@@ -1263,7 +1293,7 @@ static int check_idq(struct dquot *dquot, qsize_t inodes,
dquot->dq_dqb.dqb_itime == 0) {
prepare_warning(warn, dquot, QUOTA_NL_ISOFTWARN);
dquot->dq_dqb.dqb_itime = get_seconds() +
- sb_dqopt(dquot->dq_sb)->info[dquot->dq_type].dqi_igrace;
+ sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type].dqi_igrace;
}
return 0;
@@ -1276,7 +1306,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc,
qsize_t tspace;
struct super_block *sb = dquot->dq_sb;
- if (!sb_has_quota_limits_enabled(sb, dquot->dq_type) ||
+ if (!sb_has_quota_limits_enabled(sb, dquot->dq_id.type) ||
test_bit(DQ_FAKE_B, &dquot->dq_flags))
return 0;
@@ -1307,7 +1337,7 @@ static int check_bdq(struct dquot *dquot, qsize_t space, int prealloc,
if (!prealloc) {
prepare_warning(warn, dquot, QUOTA_NL_BSOFTWARN);
dquot->dq_dqb.dqb_btime = get_seconds() +
- sb_dqopt(sb)->info[dquot->dq_type].dqi_bgrace;
+ sb_dqopt(sb)->info[dquot->dq_id.type].dqi_bgrace;
}
else
/*
@@ -1326,7 +1356,7 @@ static int info_idq_free(struct dquot *dquot, qsize_t inodes)
if (test_bit(DQ_FAKE_B, &dquot->dq_flags) ||
dquot->dq_dqb.dqb_curinodes <= dquot->dq_dqb.dqb_isoftlimit ||
- !sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_type))
+ !sb_has_quota_limits_enabled(dquot->dq_sb, dquot->dq_id.type))
return QUOTA_NL_NOWARN;
newinodes = dquot->dq_dqb.dqb_curinodes - inodes;
@@ -1372,7 +1402,6 @@ static int dquot_active(const struct inode *inode)
*/
static void __dquot_initialize(struct inode *inode, int type)
{
- unsigned int id = 0;
int cnt;
struct dquot *got[MAXQUOTAS];
struct super_block *sb = inode->i_sb;
@@ -1385,18 +1414,19 @@ static void __dquot_initialize(struct inode *inode, int type)
/* First get references to structures we might need. */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ struct kqid qid;
got[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
switch (cnt) {
case USRQUOTA:
- id = inode->i_uid;
+ qid = make_kqid_uid(inode->i_uid);
break;
case GRPQUOTA:
- id = inode->i_gid;
+ qid = make_kqid_gid(inode->i_gid);
break;
}
- got[cnt] = dqget(sb, id, cnt);
+ got[cnt] = dqget(sb, qid);
}
down_write(&sb_dqopt(sb)->dqptr_sem);
@@ -1419,8 +1449,11 @@ static void __dquot_initialize(struct inode *inode, int type)
* did a write before quota was turned on
*/
rsv = inode_get_rsv_space(inode);
- if (unlikely(rsv))
+ if (unlikely(rsv)) {
+ spin_lock(&dq_data_lock);
dquot_resv_space(inode->i_dquot[cnt], rsv);
+ spin_unlock(&dq_data_lock);
+ }
}
}
out_err:
@@ -1505,6 +1538,15 @@ void inode_claim_rsv_space(struct inode *inode, qsize_t number)
}
EXPORT_SYMBOL(inode_claim_rsv_space);
+void inode_reclaim_rsv_space(struct inode *inode, qsize_t number)
+{
+ spin_lock(&inode->i_lock);
+ *inode_reserved_space(inode) += number;
+ __inode_sub_bytes(inode, number);
+ spin_unlock(&inode->i_lock);
+}
+EXPORT_SYMBOL(inode_reclaim_rsv_space);
+
void inode_sub_rsv_space(struct inode *inode, qsize_t number)
{
spin_lock(&inode->i_lock);
@@ -1571,10 +1613,10 @@ int __dquot_alloc_space(struct inode *inode, qsize_t number, int flags)
goto out;
}
- down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
warn[cnt].w_type = QUOTA_NL_NOWARN;
+ down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
spin_lock(&dq_data_lock);
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
if (!dquots[cnt])
@@ -1679,6 +1721,35 @@ int dquot_claim_space_nodirty(struct inode *inode, qsize_t number)
EXPORT_SYMBOL(dquot_claim_space_nodirty);
/*
+ * Convert allocated space back to in-memory reserved quotas
+ */
+void dquot_reclaim_space_nodirty(struct inode *inode, qsize_t number)
+{
+ int cnt;
+
+ if (!dquot_active(inode)) {
+ inode_reclaim_rsv_space(inode, number);
+ return;
+ }
+
+ down_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
+ spin_lock(&dq_data_lock);
+ /* Claim reserved quotas to allocated quotas */
+ for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
+ if (inode->i_dquot[cnt])
+ dquot_reclaim_reserved_space(inode->i_dquot[cnt],
+ number);
+ }
+ /* Update inode bytes */
+ inode_reclaim_rsv_space(inode, number);
+ spin_unlock(&dq_data_lock);
+ mark_all_dquot_dirty(inode->i_dquot);
+ up_read(&sb_dqopt(inode->i_sb)->dqptr_sem);
+ return;
+}
+EXPORT_SYMBOL(dquot_reclaim_space_nodirty);
+
+/*
* This operation can block, but only after everything is updated
*/
void __dquot_free_space(struct inode *inode, qsize_t number, int flags)
@@ -1879,10 +1950,10 @@ int dquot_transfer(struct inode *inode, struct iattr *iattr)
if (!dquot_active(inode))
return 0;
- if (iattr->ia_valid & ATTR_UID && iattr->ia_uid != inode->i_uid)
- transfer_to[USRQUOTA] = dqget(sb, iattr->ia_uid, USRQUOTA);
- if (iattr->ia_valid & ATTR_GID && iattr->ia_gid != inode->i_gid)
- transfer_to[GRPQUOTA] = dqget(sb, iattr->ia_gid, GRPQUOTA);
+ if (iattr->ia_valid & ATTR_UID && !uid_eq(iattr->ia_uid, inode->i_uid))
+ transfer_to[USRQUOTA] = dqget(sb, make_kqid_uid(iattr->ia_uid));
+ if (iattr->ia_valid & ATTR_GID && !gid_eq(iattr->ia_gid, inode->i_gid))
+ transfer_to[GRPQUOTA] = dqget(sb, make_kqid_gid(iattr->ia_gid));
ret = __dquot_transfer(inode, transfer_to);
dqput_all(transfer_to);
@@ -2342,9 +2413,9 @@ static void do_get_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
memset(di, 0, sizeof(*di));
di->d_version = FS_DQUOT_VERSION;
- di->d_flags = dquot->dq_type == USRQUOTA ?
+ di->d_flags = dquot->dq_id.type == USRQUOTA ?
FS_USER_QUOTA : FS_GROUP_QUOTA;
- di->d_id = dquot->dq_id;
+ di->d_id = from_kqid_munged(current_user_ns(), dquot->dq_id);
spin_lock(&dq_data_lock);
di->d_blk_hardlimit = stoqb(dm->dqb_bhardlimit);
@@ -2358,12 +2429,12 @@ static void do_get_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
spin_unlock(&dq_data_lock);
}
-int dquot_get_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_get_dqblk(struct super_block *sb, struct kqid qid,
struct fs_disk_quota *di)
{
struct dquot *dquot;
- dquot = dqget(sb, id, type);
+ dquot = dqget(sb, qid);
if (!dquot)
return -ESRCH;
do_get_dqblk(dquot, di);
@@ -2383,7 +2454,7 @@ static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
{
struct mem_dqblk *dm = &dquot->dq_dqb;
int check_blim = 0, check_ilim = 0;
- struct mem_dqinfo *dqi = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_type];
+ struct mem_dqinfo *dqi = &sb_dqopt(dquot->dq_sb)->info[dquot->dq_id.type];
if (di->d_fieldmask & ~VFS_FS_DQ_MASK)
return -EINVAL;
@@ -2470,13 +2541,13 @@ static int do_set_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
return 0;
}
-int dquot_set_dqblk(struct super_block *sb, int type, qid_t id,
+int dquot_set_dqblk(struct super_block *sb, struct kqid qid,
struct fs_disk_quota *di)
{
struct dquot *dquot;
int rc;
- dquot = dqget(sb, id, type);
+ dquot = dqget(sb, qid);
if (!dquot) {
rc = -ESRCH;
goto out;
@@ -2562,7 +2633,7 @@ static int do_proc_dqstats(struct ctl_table *table, int write,
return proc_dointvec(table, write, buffer, lenp, ppos);
}
-static ctl_table fs_dqstats_table[] = {
+static struct ctl_table fs_dqstats_table[] = {
{
.procname = "lookups",
.data = &dqstats.stat[DQST_LOOKUPS],
@@ -2631,7 +2702,7 @@ static ctl_table fs_dqstats_table[] = {
{ },
};
-static ctl_table fs_table[] = {
+static struct ctl_table fs_table[] = {
{
.procname = "quota",
.mode = 0555,
@@ -2640,7 +2711,7 @@ static ctl_table fs_table[] = {
{ },
};
-static ctl_table sys_table[] = {
+static struct ctl_table sys_table[] = {
{
.procname = "fs",
.mode = 0555,
diff --git a/fs/quota/kqid.c b/fs/quota/kqid.c
new file mode 100644
index 00000000000..2f97b0e2c50
--- /dev/null
+++ b/fs/quota/kqid.c
@@ -0,0 +1,132 @@
+#include <linux/fs.h>
+#include <linux/quota.h>
+#include <linux/export.h>
+
+/**
+ * qid_eq - Test to see if to kquid values are the same
+ * @left: A qid value
+ * @right: Another quid value
+ *
+ * Return true if the two qid values are equal and false otherwise.
+ */
+bool qid_eq(struct kqid left, struct kqid right)
+{
+ if (left.type != right.type)
+ return false;
+ switch(left.type) {
+ case USRQUOTA:
+ return uid_eq(left.uid, right.uid);
+ case GRPQUOTA:
+ return gid_eq(left.gid, right.gid);
+ case PRJQUOTA:
+ return projid_eq(left.projid, right.projid);
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(qid_eq);
+
+/**
+ * qid_lt - Test to see if one qid value is less than another
+ * @left: The possibly lesser qid value
+ * @right: The possibly greater qid value
+ *
+ * Return true if left is less than right and false otherwise.
+ */
+bool qid_lt(struct kqid left, struct kqid right)
+{
+ if (left.type < right.type)
+ return true;
+ if (left.type > right.type)
+ return false;
+ switch (left.type) {
+ case USRQUOTA:
+ return uid_lt(left.uid, right.uid);
+ case GRPQUOTA:
+ return gid_lt(left.gid, right.gid);
+ case PRJQUOTA:
+ return projid_lt(left.projid, right.projid);
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(qid_lt);
+
+/**
+ * from_kqid - Create a qid from a kqid user-namespace pair.
+ * @targ: The user namespace we want a qid in.
+ * @kuid: The kernel internal quota identifier to start with.
+ *
+ * Map @kqid into the user-namespace specified by @targ and
+ * return the resulting qid.
+ *
+ * There is always a mapping into the initial user_namespace.
+ *
+ * If @kqid has no mapping in @targ (qid_t)-1 is returned.
+ */
+qid_t from_kqid(struct user_namespace *targ, struct kqid kqid)
+{
+ switch (kqid.type) {
+ case USRQUOTA:
+ return from_kuid(targ, kqid.uid);
+ case GRPQUOTA:
+ return from_kgid(targ, kqid.gid);
+ case PRJQUOTA:
+ return from_kprojid(targ, kqid.projid);
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(from_kqid);
+
+/**
+ * from_kqid_munged - Create a qid from a kqid user-namespace pair.
+ * @targ: The user namespace we want a qid in.
+ * @kqid: The kernel internal quota identifier to start with.
+ *
+ * Map @kqid into the user-namespace specified by @targ and
+ * return the resulting qid.
+ *
+ * There is always a mapping into the initial user_namespace.
+ *
+ * Unlike from_kqid from_kqid_munged never fails and always
+ * returns a valid projid. This makes from_kqid_munged
+ * appropriate for use in places where failing to provide
+ * a qid_t is not a good option.
+ *
+ * If @kqid has no mapping in @targ the kqid.type specific
+ * overflow identifier is returned.
+ */
+qid_t from_kqid_munged(struct user_namespace *targ, struct kqid kqid)
+{
+ switch (kqid.type) {
+ case USRQUOTA:
+ return from_kuid_munged(targ, kqid.uid);
+ case GRPQUOTA:
+ return from_kgid_munged(targ, kqid.gid);
+ case PRJQUOTA:
+ return from_kprojid_munged(targ, kqid.projid);
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(from_kqid_munged);
+
+/**
+ * qid_valid - Report if a valid value is stored in a kqid.
+ * @qid: The kernel internal quota identifier to test.
+ */
+bool qid_valid(struct kqid qid)
+{
+ switch (qid.type) {
+ case USRQUOTA:
+ return uid_valid(qid.uid);
+ case GRPQUOTA:
+ return gid_valid(qid.gid);
+ case PRJQUOTA:
+ return projid_valid(qid.projid);
+ default:
+ BUG();
+ }
+}
+EXPORT_SYMBOL(qid_valid);
diff --git a/fs/quota/netlink.c b/fs/quota/netlink.c
index d67908b407d..72d29177998 100644
--- a/fs/quota/netlink.c
+++ b/fs/quota/netlink.c
@@ -9,13 +9,25 @@
#include <net/netlink.h>
#include <net/genetlink.h>
+static const struct genl_multicast_group quota_mcgrps[] = {
+ { .name = "events", },
+};
+
/* Netlink family structure for quota */
static struct genl_family quota_genl_family = {
- .id = GENL_ID_GENERATE,
+ /*
+ * Needed due to multicast group ID abuse - old code assumed
+ * the family ID was also a valid multicast group ID (which
+ * isn't true) and userspace might thus rely on it. Assign a
+ * static ID for this group to make dealing with that easier.
+ */
+ .id = GENL_ID_VFS_DQUOT,
.hdrsize = 0,
.name = "VFS_DQUOT",
.version = 1,
.maxattr = QUOTA_NL_A_MAX,
+ .mcgrps = quota_mcgrps,
+ .n_mcgrps = ARRAY_SIZE(quota_mcgrps),
};
/**
@@ -30,7 +42,7 @@ static struct genl_family quota_genl_family = {
*
*/
-void quota_send_warning(short type, unsigned int id, dev_t dev,
+void quota_send_warning(struct kqid qid, dev_t dev,
const char warntype)
{
static atomic_t seq;
@@ -56,10 +68,11 @@ void quota_send_warning(short type, unsigned int id, dev_t dev,
"VFS: Cannot store netlink header in quota warning.\n");
goto err_out;
}
- ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, type);
+ ret = nla_put_u32(skb, QUOTA_NL_A_QTYPE, qid.type);
if (ret)
goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID, id);
+ ret = nla_put_u64(skb, QUOTA_NL_A_EXCESS_ID,
+ from_kqid_munged(&init_user_ns, qid));
if (ret)
goto attr_err_out;
ret = nla_put_u32(skb, QUOTA_NL_A_WARNING, warntype);
@@ -71,12 +84,13 @@ void quota_send_warning(short type, unsigned int id, dev_t dev,
ret = nla_put_u32(skb, QUOTA_NL_A_DEV_MINOR, MINOR(dev));
if (ret)
goto attr_err_out;
- ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID, current_uid());
+ ret = nla_put_u64(skb, QUOTA_NL_A_CAUSED_ID,
+ from_kuid_munged(&init_user_ns, current_uid()));
if (ret)
goto attr_err_out;
genlmsg_end(skb, msg_head);
- genlmsg_multicast(skb, 0, quota_genl_family.id, GFP_NOFS);
+ genlmsg_multicast(&quota_genl_family, skb, 0, 0, GFP_NOFS);
return;
attr_err_out:
printk(KERN_ERR "VFS: Not enough space to compose quota message!\n");
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 9a391204ca2..ff3f0b3cfdb 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -9,7 +9,7 @@
#include <linux/namei.h>
#include <linux/slab.h>
#include <asm/current.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <linux/kernel.h>
#include <linux/security.h>
#include <linux/syscalls.h>
@@ -27,13 +27,14 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
case Q_SYNC:
case Q_GETINFO:
case Q_XGETQSTAT:
+ case Q_XGETQSTATV:
case Q_XQUOTASYNC:
break;
/* allow to query information for dquots we "own" */
case Q_GETQUOTA:
case Q_XGETQUOTA:
- if ((type == USRQUOTA && current_euid() == id) ||
- (type == GRPQUOTA && in_egroup_p(id)))
+ if ((type == USRQUOTA && uid_eq(current_euid(), make_kuid(current_user_ns(), id))) ||
+ (type == GRPQUOTA && in_egroup_p(make_kgid(current_user_ns(), id))))
break;
/*FALLTHROUGH*/
default:
@@ -47,7 +48,7 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
static void quota_sync_one(struct super_block *sb, void *arg)
{
if (sb->s_qcop && sb->s_qcop->quota_sync)
- sb->s_qcop->quota_sync(sb, *(int *)arg, 1);
+ sb->s_qcop->quota_sync(sb, *(int *)arg);
}
static int quota_sync_all(int type)
@@ -116,6 +117,7 @@ static int quota_setinfo(struct super_block *sb, int type, void __user *addr)
static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src)
{
+ memset(dst, 0, sizeof(*dst));
dst->dqb_bhardlimit = src->d_blk_hardlimit;
dst->dqb_bsoftlimit = src->d_blk_softlimit;
dst->dqb_curspace = src->d_bcount;
@@ -130,13 +132,17 @@ static void copy_to_if_dqblk(struct if_dqblk *dst, struct fs_disk_quota *src)
static int quota_getquota(struct super_block *sb, int type, qid_t id,
void __user *addr)
{
+ struct kqid qid;
struct fs_disk_quota fdq;
struct if_dqblk idq;
int ret;
if (!sb->s_qcop->get_dqblk)
return -ENOSYS;
- ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
+ qid = make_kqid(current_user_ns(), type, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
+ ret = sb->s_qcop->get_dqblk(sb, qid, &fdq);
if (ret)
return ret;
copy_to_if_dqblk(&idq, &fdq);
@@ -176,13 +182,17 @@ static int quota_setquota(struct super_block *sb, int type, qid_t id,
{
struct fs_disk_quota fdq;
struct if_dqblk idq;
+ struct kqid qid;
if (copy_from_user(&idq, addr, sizeof(idq)))
return -EFAULT;
if (!sb->s_qcop->set_dqblk)
return -ENOSYS;
+ qid = make_kqid(current_user_ns(), type, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
copy_from_if_dqblk(&fdq, &idq);
- return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
+ return sb->s_qcop->set_dqblk(sb, qid, &fdq);
}
static int quota_setxstate(struct super_block *sb, int cmd, void __user *addr)
@@ -209,32 +219,76 @@ static int quota_getxstate(struct super_block *sb, void __user *addr)
return ret;
}
+static int quota_getxstatev(struct super_block *sb, void __user *addr)
+{
+ struct fs_quota_statv fqs;
+ int ret;
+
+ if (!sb->s_qcop->get_xstatev)
+ return -ENOSYS;
+
+ memset(&fqs, 0, sizeof(fqs));
+ if (copy_from_user(&fqs, addr, 1)) /* Just read qs_version */
+ return -EFAULT;
+
+ /* If this kernel doesn't support user specified version, fail */
+ switch (fqs.qs_version) {
+ case FS_QSTATV_VERSION1:
+ break;
+ default:
+ return -EINVAL;
+ }
+ ret = sb->s_qcop->get_xstatev(sb, &fqs);
+ if (!ret && copy_to_user(addr, &fqs, sizeof(fqs)))
+ return -EFAULT;
+ return ret;
+}
+
static int quota_setxquota(struct super_block *sb, int type, qid_t id,
void __user *addr)
{
struct fs_disk_quota fdq;
+ struct kqid qid;
if (copy_from_user(&fdq, addr, sizeof(fdq)))
return -EFAULT;
if (!sb->s_qcop->set_dqblk)
return -ENOSYS;
- return sb->s_qcop->set_dqblk(sb, type, id, &fdq);
+ qid = make_kqid(current_user_ns(), type, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
+ return sb->s_qcop->set_dqblk(sb, qid, &fdq);
}
static int quota_getxquota(struct super_block *sb, int type, qid_t id,
void __user *addr)
{
struct fs_disk_quota fdq;
+ struct kqid qid;
int ret;
if (!sb->s_qcop->get_dqblk)
return -ENOSYS;
- ret = sb->s_qcop->get_dqblk(sb, type, id, &fdq);
+ qid = make_kqid(current_user_ns(), type, id);
+ if (!qid_valid(qid))
+ return -EINVAL;
+ ret = sb->s_qcop->get_dqblk(sb, qid, &fdq);
if (!ret && copy_to_user(addr, &fdq, sizeof(fdq)))
return -EFAULT;
return ret;
}
+static int quota_rmxquota(struct super_block *sb, void __user *addr)
+{
+ __u32 flags;
+
+ if (copy_from_user(&flags, addr, sizeof(flags)))
+ return -EFAULT;
+ if (!sb->s_qcop->rm_xquota)
+ return -ENOSYS;
+ return sb->s_qcop->rm_xquota(sb, flags);
+}
+
/* Copy parameters and call proper function */
static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
void __user *addr, struct path *path)
@@ -270,13 +324,16 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
case Q_SYNC:
if (!sb->s_qcop->quota_sync)
return -ENOSYS;
- return sb->s_qcop->quota_sync(sb, type, 1);
+ return sb->s_qcop->quota_sync(sb, type);
case Q_XQUOTAON:
case Q_XQUOTAOFF:
- case Q_XQUOTARM:
return quota_setxstate(sb, cmd, addr);
+ case Q_XQUOTARM:
+ return quota_rmxquota(sb, addr);
case Q_XGETQSTAT:
return quota_getxstate(sb, addr);
+ case Q_XGETQSTATV:
+ return quota_getxstatev(sb, addr);
case Q_XSETQLIM:
return quota_setxquota(sb, type, id, addr);
case Q_XGETQUOTA:
@@ -291,6 +348,8 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
}
}
+#ifdef CONFIG_BLOCK
+
/* Return 1 if 'cmd' will block on frozen filesystem */
static int quotactl_cmd_write(int cmd)
{
@@ -299,6 +358,7 @@ static int quotactl_cmd_write(int cmd)
case Q_GETINFO:
case Q_SYNC:
case Q_XGETQSTAT:
+ case Q_XGETQSTATV:
case Q_XGETQUOTA:
case Q_XQUOTASYNC:
return 0;
@@ -306,6 +366,8 @@ static int quotactl_cmd_write(int cmd)
return 1;
}
+#endif /* CONFIG_BLOCK */
+
/*
* look up a superblock on which quota ops will be performed
* - use the name of a block device to find the superblock thereon
@@ -315,11 +377,11 @@ static struct super_block *quotactl_block(const char __user *special, int cmd)
#ifdef CONFIG_BLOCK
struct block_device *bdev;
struct super_block *sb;
- char *tmp = getname(special);
+ struct filename *tmp = getname(special);
if (IS_ERR(tmp))
return ERR_CAST(tmp);
- bdev = lookup_bdev(tmp);
+ bdev = lookup_bdev(tmp->name);
putname(tmp);
if (IS_ERR(bdev))
return ERR_CAST(bdev);
diff --git a/fs/quota/quota_tree.c b/fs/quota/quota_tree.c
index e41c1becf09..d65877fbe8f 100644
--- a/fs/quota/quota_tree.c
+++ b/fs/quota/quota_tree.c
@@ -22,9 +22,10 @@ MODULE_LICENSE("GPL");
#define __QUOTA_QT_PARANOIA
-static int get_index(struct qtree_mem_dqinfo *info, qid_t id, int depth)
+static int get_index(struct qtree_mem_dqinfo *info, struct kqid qid, int depth)
{
unsigned int epb = info->dqi_usable_bs >> 2;
+ qid_t id = from_kqid(&init_user_ns, qid);
depth = info->dqi_qtree_depth - depth - 1;
while (depth--)
@@ -244,7 +245,7 @@ static uint find_free_dqentry(struct qtree_mem_dqinfo *info,
/* This is enough as the block is already zeroed and the entry
* list is empty... */
info->dqi_free_entry = blk;
- mark_info_dirty(dquot->dq_sb, dquot->dq_type);
+ mark_info_dirty(dquot->dq_sb, dquot->dq_id.type);
}
/* Block will be full? */
if (le16_to_cpu(dh->dqdh_entries) + 1 >= qtree_dqstr_in_blk(info)) {
@@ -357,7 +358,7 @@ static inline int dq_insert_tree(struct qtree_mem_dqinfo *info,
*/
int qtree_write_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
{
- int type = dquot->dq_type;
+ int type = dquot->dq_id.type;
struct super_block *sb = dquot->dq_sb;
ssize_t ret;
char *ddquot = getdqbuf(info->dqi_entry_size);
@@ -538,8 +539,9 @@ static loff_t find_block_dqentry(struct qtree_mem_dqinfo *info,
ddquot += info->dqi_entry_size;
}
if (i == qtree_dqstr_in_blk(info)) {
- quota_error(dquot->dq_sb, "Quota for id %u referenced "
- "but not present", dquot->dq_id);
+ quota_error(dquot->dq_sb,
+ "Quota for id %u referenced but not present",
+ from_kqid(&init_user_ns, dquot->dq_id));
ret = -EIO;
goto out_buf;
} else {
@@ -589,7 +591,7 @@ static inline loff_t find_dqentry(struct qtree_mem_dqinfo *info,
int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
{
- int type = dquot->dq_type;
+ int type = dquot->dq_id.type;
struct super_block *sb = dquot->dq_sb;
loff_t offset;
char *ddquot;
@@ -607,8 +609,10 @@ int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
offset = find_dqentry(info, dquot);
if (offset <= 0) { /* Entry not present? */
if (offset < 0)
- quota_error(sb, "Can't read quota structure "
- "for id %u", dquot->dq_id);
+ quota_error(sb,"Can't read quota structure "
+ "for id %u",
+ from_kqid(&init_user_ns,
+ dquot->dq_id));
dquot->dq_off = 0;
set_bit(DQ_FAKE_B, &dquot->dq_flags);
memset(&dquot->dq_dqb, 0, sizeof(struct mem_dqblk));
@@ -626,7 +630,7 @@ int qtree_read_dquot(struct qtree_mem_dqinfo *info, struct dquot *dquot)
if (ret >= 0)
ret = -EIO;
quota_error(sb, "Error while reading quota structure for id %u",
- dquot->dq_id);
+ from_kqid(&init_user_ns, dquot->dq_id));
set_bit(DQ_FAKE_B, &dquot->dq_flags);
memset(&dquot->dq_dqb, 0, sizeof(struct mem_dqblk));
kfree(ddquot);
diff --git a/fs/quota/quota_v1.c b/fs/quota/quota_v1.c
index 34b37a67bb1..469c6848b32 100644
--- a/fs/quota/quota_v1.c
+++ b/fs/quota/quota_v1.c
@@ -54,7 +54,7 @@ static void v1_mem2disk_dqblk(struct v1_disk_dqblk *d, struct mem_dqblk *m)
static int v1_read_dqblk(struct dquot *dquot)
{
- int type = dquot->dq_type;
+ int type = dquot->dq_id.type;
struct v1_disk_dqblk dqblk;
if (!sb_dqopt(dquot->dq_sb)->files[type])
@@ -63,7 +63,8 @@ static int v1_read_dqblk(struct dquot *dquot)
/* Set structure to 0s in case read fails/is after end of file */
memset(&dqblk, 0, sizeof(struct v1_disk_dqblk));
dquot->dq_sb->s_op->quota_read(dquot->dq_sb, type, (char *)&dqblk,
- sizeof(struct v1_disk_dqblk), v1_dqoff(dquot->dq_id));
+ sizeof(struct v1_disk_dqblk),
+ v1_dqoff(from_kqid(&init_user_ns, dquot->dq_id)));
v1_disk2mem_dqblk(&dquot->dq_dqb, &dqblk);
if (dquot->dq_dqb.dqb_bhardlimit == 0 &&
@@ -78,12 +79,13 @@ static int v1_read_dqblk(struct dquot *dquot)
static int v1_commit_dqblk(struct dquot *dquot)
{
- short type = dquot->dq_type;
+ short type = dquot->dq_id.type;
ssize_t ret;
struct v1_disk_dqblk dqblk;
v1_mem2disk_dqblk(&dqblk, &dquot->dq_dqb);
- if (dquot->dq_id == 0) {
+ if (((type == USRQUOTA) && uid_eq(dquot->dq_id.uid, GLOBAL_ROOT_UID)) ||
+ ((type == GRPQUOTA) && gid_eq(dquot->dq_id.gid, GLOBAL_ROOT_GID))) {
dqblk.dqb_btime =
sb_dqopt(dquot->dq_sb)->info[type].dqi_bgrace;
dqblk.dqb_itime =
@@ -93,7 +95,7 @@ static int v1_commit_dqblk(struct dquot *dquot)
if (sb_dqopt(dquot->dq_sb)->files[type])
ret = dquot->dq_sb->s_op->quota_write(dquot->dq_sb, type,
(char *)&dqblk, sizeof(struct v1_disk_dqblk),
- v1_dqoff(dquot->dq_id));
+ v1_dqoff(from_kqid(&init_user_ns, dquot->dq_id)));
if (ret != sizeof(struct v1_disk_dqblk)) {
quota_error(dquot->dq_sb, "dquota write failed");
if (ret >= 0)
diff --git a/fs/quota/quota_v2.c b/fs/quota/quota_v2.c
index f1ab3604db5..02751ec695c 100644
--- a/fs/quota/quota_v2.c
+++ b/fs/quota/quota_v2.c
@@ -196,7 +196,7 @@ static void v2r0_mem2diskdqb(void *dp, struct dquot *dquot)
struct v2r0_disk_dqblk *d = dp;
struct mem_dqblk *m = &dquot->dq_dqb;
struct qtree_mem_dqinfo *info =
- sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
d->dqb_ihardlimit = cpu_to_le32(m->dqb_ihardlimit);
d->dqb_isoftlimit = cpu_to_le32(m->dqb_isoftlimit);
@@ -206,7 +206,7 @@ static void v2r0_mem2diskdqb(void *dp, struct dquot *dquot)
d->dqb_bsoftlimit = cpu_to_le32(v2_stoqb(m->dqb_bsoftlimit));
d->dqb_curspace = cpu_to_le64(m->dqb_curspace);
d->dqb_btime = cpu_to_le64(m->dqb_btime);
- d->dqb_id = cpu_to_le32(dquot->dq_id);
+ d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id));
if (qtree_entry_unused(info, dp))
d->dqb_itime = cpu_to_le64(1);
}
@@ -215,11 +215,13 @@ static int v2r0_is_id(void *dp, struct dquot *dquot)
{
struct v2r0_disk_dqblk *d = dp;
struct qtree_mem_dqinfo *info =
- sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
if (qtree_entry_unused(info, dp))
return 0;
- return le32_to_cpu(d->dqb_id) == dquot->dq_id;
+ return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type,
+ le32_to_cpu(d->dqb_id)),
+ dquot->dq_id);
}
static void v2r1_disk2memdqb(struct dquot *dquot, void *dp)
@@ -247,7 +249,7 @@ static void v2r1_mem2diskdqb(void *dp, struct dquot *dquot)
struct v2r1_disk_dqblk *d = dp;
struct mem_dqblk *m = &dquot->dq_dqb;
struct qtree_mem_dqinfo *info =
- sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
d->dqb_ihardlimit = cpu_to_le64(m->dqb_ihardlimit);
d->dqb_isoftlimit = cpu_to_le64(m->dqb_isoftlimit);
@@ -257,7 +259,7 @@ static void v2r1_mem2diskdqb(void *dp, struct dquot *dquot)
d->dqb_bsoftlimit = cpu_to_le64(v2_stoqb(m->dqb_bsoftlimit));
d->dqb_curspace = cpu_to_le64(m->dqb_curspace);
d->dqb_btime = cpu_to_le64(m->dqb_btime);
- d->dqb_id = cpu_to_le32(dquot->dq_id);
+ d->dqb_id = cpu_to_le32(from_kqid(&init_user_ns, dquot->dq_id));
if (qtree_entry_unused(info, dp))
d->dqb_itime = cpu_to_le64(1);
}
@@ -266,26 +268,28 @@ static int v2r1_is_id(void *dp, struct dquot *dquot)
{
struct v2r1_disk_dqblk *d = dp;
struct qtree_mem_dqinfo *info =
- sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv;
+ sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv;
if (qtree_entry_unused(info, dp))
return 0;
- return le32_to_cpu(d->dqb_id) == dquot->dq_id;
+ return qid_eq(make_kqid(&init_user_ns, dquot->dq_id.type,
+ le32_to_cpu(d->dqb_id)),
+ dquot->dq_id);
}
static int v2_read_dquot(struct dquot *dquot)
{
- return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
+ return qtree_read_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot);
}
static int v2_write_dquot(struct dquot *dquot)
{
- return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
+ return qtree_write_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot);
}
static int v2_release_dquot(struct dquot *dquot)
{
- return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_type)->dqi_priv, dquot);
+ return qtree_release_dquot(sb_dqinfo(dquot->dq_sb, dquot->dq_id.type)->dqi_priv, dquot);
}
static int v2_free_file_info(struct super_block *sb, int type)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:42:34 +0000