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-rw-r--r--fs/ext4/ext4.h2
-rw-r--r--fs/ext4/file.c2
-rw-r--r--fs/ext4/inode.c67
-rw-r--r--fs/ext4/ioctl.c2
-rw-r--r--fs/ext4/namei.c2
-rw-r--r--fs/ext4/super.c74
-rw-r--r--fs/ext4/symlink.c3
7 files changed, 111 insertions, 41 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index f493af666591..f7b465b4fb69 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -2466,6 +2466,7 @@ extern int ext4_setattr(struct dentry *, struct iattr *);
extern int ext4_getattr(const struct path *, struct kstat *, u32, unsigned int);
extern void ext4_evict_inode(struct inode *);
extern void ext4_clear_inode(struct inode *);
+extern int ext4_file_getattr(const struct path *, struct kstat *, u32, unsigned int);
extern int ext4_sync_inode(handle_t *, struct inode *);
extern void ext4_dirty_inode(struct inode *, int);
extern int ext4_change_inode_journal_flag(struct inode *, int);
@@ -2476,7 +2477,6 @@ extern int ext4_truncate(struct inode *);
extern int ext4_punch_hole(struct inode *inode, loff_t offset, loff_t length);
extern int ext4_truncate_restart_trans(handle_t *, struct inode *, int nblocks);
extern void ext4_set_inode_flags(struct inode *);
-extern void ext4_get_inode_flags(struct ext4_inode_info *);
extern int ext4_alloc_da_blocks(struct inode *inode);
extern void ext4_set_aops(struct inode *inode);
extern int ext4_writepage_trans_blocks(struct inode *);
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index 8210c1f43556..cefa9835f275 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -744,7 +744,7 @@ const struct file_operations ext4_file_operations = {
const struct inode_operations ext4_file_inode_operations = {
.setattr = ext4_setattr,
- .getattr = ext4_getattr,
+ .getattr = ext4_file_getattr,
.listxattr = ext4_listxattr,
.get_acl = ext4_get_acl,
.set_acl = ext4_set_acl,
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2cb2634daa99..f0729b0705c7 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -4509,31 +4509,6 @@ void ext4_set_inode_flags(struct inode *inode)
S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|S_DAX);
}
-/* Propagate flags from i_flags to EXT4_I(inode)->i_flags */
-void ext4_get_inode_flags(struct ext4_inode_info *ei)
-{
- unsigned int vfs_fl;
- unsigned long old_fl, new_fl;
-
- do {
- vfs_fl = ei->vfs_inode.i_flags;
- old_fl = ei->i_flags;
- new_fl = old_fl & ~(EXT4_SYNC_FL|EXT4_APPEND_FL|
- EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|
- EXT4_DIRSYNC_FL);
- if (vfs_fl & S_SYNC)
- new_fl |= EXT4_SYNC_FL;
- if (vfs_fl & S_APPEND)
- new_fl |= EXT4_APPEND_FL;
- if (vfs_fl & S_IMMUTABLE)
- new_fl |= EXT4_IMMUTABLE_FL;
- if (vfs_fl & S_NOATIME)
- new_fl |= EXT4_NOATIME_FL;
- if (vfs_fl & S_DIRSYNC)
- new_fl |= EXT4_DIRSYNC_FL;
- } while (cmpxchg(&ei->i_flags, old_fl, new_fl) != old_fl);
-}
-
static blkcnt_t ext4_inode_blocks(struct ext4_inode *raw_inode,
struct ext4_inode_info *ei)
{
@@ -4970,7 +4945,6 @@ static int ext4_do_update_inode(handle_t *handle,
if (ext4_test_inode_state(inode, EXT4_STATE_NEW))
memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size);
- ext4_get_inode_flags(ei);
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
i_uid = i_uid_read(inode);
i_gid = i_gid_read(inode);
@@ -5397,11 +5371,46 @@ err_out:
int ext4_getattr(const struct path *path, struct kstat *stat,
u32 request_mask, unsigned int query_flags)
{
- struct inode *inode;
- unsigned long long delalloc_blocks;
+ struct inode *inode = d_inode(path->dentry);
+ struct ext4_inode *raw_inode;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ unsigned int flags;
+
+ if (EXT4_FITS_IN_INODE(raw_inode, ei, i_crtime)) {
+ stat->result_mask |= STATX_BTIME;
+ stat->btime.tv_sec = ei->i_crtime.tv_sec;
+ stat->btime.tv_nsec = ei->i_crtime.tv_nsec;
+ }
+
+ flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
+ if (flags & EXT4_APPEND_FL)
+ stat->attributes |= STATX_ATTR_APPEND;
+ if (flags & EXT4_COMPR_FL)
+ stat->attributes |= STATX_ATTR_COMPRESSED;
+ if (flags & EXT4_ENCRYPT_FL)
+ stat->attributes |= STATX_ATTR_ENCRYPTED;
+ if (flags & EXT4_IMMUTABLE_FL)
+ stat->attributes |= STATX_ATTR_IMMUTABLE;
+ if (flags & EXT4_NODUMP_FL)
+ stat->attributes |= STATX_ATTR_NODUMP;
+
+ stat->attributes_mask |= (STATX_ATTR_APPEND |
+ STATX_ATTR_COMPRESSED |
+ STATX_ATTR_ENCRYPTED |
+ STATX_ATTR_IMMUTABLE |
+ STATX_ATTR_NODUMP);
- inode = d_inode(path->dentry);
generic_fillattr(inode, stat);
+ return 0;
+}
+
+int ext4_file_getattr(const struct path *path, struct kstat *stat,
+ u32 request_mask, unsigned int query_flags)
+{
+ struct inode *inode = d_inode(path->dentry);
+ u64 delalloc_blocks;
+
+ ext4_getattr(path, stat, request_mask, query_flags);
/*
* If there is inline data in the inode, the inode will normally not
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index a4273ddb9922..184e74eb3004 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -500,7 +500,6 @@ long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
switch (cmd) {
case EXT4_IOC_GETFLAGS:
- ext4_get_inode_flags(ei);
flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
return put_user(flags, (int __user *) arg);
case EXT4_IOC_SETFLAGS: {
@@ -888,7 +887,6 @@ resizefs_out:
struct fsxattr fa;
memset(&fa, 0, sizeof(struct fsxattr));
- ext4_get_inode_flags(ei);
fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
if (ext4_has_feature_project(inode->i_sb)) {
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 6ad612c576fc..07e5e1405771 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -3912,6 +3912,7 @@ const struct inode_operations ext4_dir_inode_operations = {
.tmpfile = ext4_tmpfile,
.rename = ext4_rename2,
.setattr = ext4_setattr,
+ .getattr = ext4_getattr,
.listxattr = ext4_listxattr,
.get_acl = ext4_get_acl,
.set_acl = ext4_set_acl,
@@ -3920,6 +3921,7 @@ const struct inode_operations ext4_dir_inode_operations = {
const struct inode_operations ext4_special_inode_operations = {
.setattr = ext4_setattr,
+ .getattr = ext4_getattr,
.listxattr = ext4_listxattr,
.get_acl = ext4_get_acl,
.set_acl = ext4_set_acl,
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index a9448db1cf7e..a9c72e39a4ee 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -839,6 +839,28 @@ static void dump_orphan_list(struct super_block *sb, struct ext4_sb_info *sbi)
}
}
+#ifdef CONFIG_QUOTA
+static int ext4_quota_off(struct super_block *sb, int type);
+
+static inline void ext4_quota_off_umount(struct super_block *sb)
+{
+ int type;
+
+ if (ext4_has_feature_quota(sb)) {
+ dquot_disable(sb, -1,
+ DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+ } else {
+ /* Use our quota_off function to clear inode flags etc. */
+ for (type = 0; type < EXT4_MAXQUOTAS; type++)
+ ext4_quota_off(sb, type);
+ }
+}
+#else
+static inline void ext4_quota_off_umount(struct super_block *sb)
+{
+}
+#endif
+
static void ext4_put_super(struct super_block *sb)
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
@@ -847,7 +869,7 @@ static void ext4_put_super(struct super_block *sb)
int i, err;
ext4_unregister_li_request(sb);
- dquot_disable(sb, -1, DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
+ ext4_quota_off_umount(sb);
flush_workqueue(sbi->rsv_conversion_wq);
destroy_workqueue(sbi->rsv_conversion_wq);
@@ -1218,7 +1240,6 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot);
static int ext4_write_info(struct super_block *sb, int type);
static int ext4_quota_on(struct super_block *sb, int type, int format_id,
const struct path *path);
-static int ext4_quota_off(struct super_block *sb, int type);
static int ext4_quota_on_mount(struct super_block *sb, int type);
static ssize_t ext4_quota_read(struct super_block *sb, int type, char *data,
size_t len, loff_t off);
@@ -5344,11 +5365,33 @@ static int ext4_quota_on(struct super_block *sb, int type, int format_id,
if (err)
return err;
}
+
lockdep_set_quota_inode(path->dentry->d_inode, I_DATA_SEM_QUOTA);
err = dquot_quota_on(sb, type, format_id, path);
- if (err)
+ if (err) {
lockdep_set_quota_inode(path->dentry->d_inode,
I_DATA_SEM_NORMAL);
+ } else {
+ struct inode *inode = d_inode(path->dentry);
+ handle_t *handle;
+
+ /*
+ * Set inode flags to prevent userspace from messing with quota
+ * files. If this fails, we return success anyway since quotas
+ * are already enabled and this is not a hard failure.
+ */
+ inode_lock(inode);
+ handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
+ if (IS_ERR(handle))
+ goto unlock_inode;
+ EXT4_I(inode)->i_flags |= EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL;
+ inode_set_flags(inode, S_NOATIME | S_IMMUTABLE,
+ S_NOATIME | S_IMMUTABLE);
+ ext4_mark_inode_dirty(handle, inode);
+ ext4_journal_stop(handle);
+ unlock_inode:
+ inode_unlock(inode);
+ }
return err;
}
@@ -5422,24 +5465,39 @@ static int ext4_quota_off(struct super_block *sb, int type)
{
struct inode *inode = sb_dqopt(sb)->files[type];
handle_t *handle;
+ int err;
/* Force all delayed allocation blocks to be allocated.
* Caller already holds s_umount sem */
if (test_opt(sb, DELALLOC))
sync_filesystem(sb);
- if (!inode)
+ if (!inode || !igrab(inode))
goto out;
- /* Update modification times of quota files when userspace can
- * start looking at them */
+ err = dquot_quota_off(sb, type);
+ if (err)
+ goto out_put;
+
+ inode_lock(inode);
+ /*
+ * Update modification times of quota files when userspace can
+ * start looking at them. If we fail, we return success anyway since
+ * this is not a hard failure and quotas are already disabled.
+ */
handle = ext4_journal_start(inode, EXT4_HT_QUOTA, 1);
if (IS_ERR(handle))
- goto out;
+ goto out_unlock;
+ EXT4_I(inode)->i_flags &= ~(EXT4_NOATIME_FL | EXT4_IMMUTABLE_FL);
+ inode_set_flags(inode, 0, S_NOATIME | S_IMMUTABLE);
inode->i_mtime = inode->i_ctime = current_time(inode);
ext4_mark_inode_dirty(handle, inode);
ext4_journal_stop(handle);
-
+out_unlock:
+ inode_unlock(inode);
+out_put:
+ iput(inode);
+ return err;
out:
return dquot_quota_off(sb, type);
}
diff --git a/fs/ext4/symlink.c b/fs/ext4/symlink.c
index 73b184d161fc..5c8fc53cb0e5 100644
--- a/fs/ext4/symlink.c
+++ b/fs/ext4/symlink.c
@@ -85,17 +85,20 @@ errout:
const struct inode_operations ext4_encrypted_symlink_inode_operations = {
.get_link = ext4_encrypted_get_link,
.setattr = ext4_setattr,
+ .getattr = ext4_getattr,
.listxattr = ext4_listxattr,
};
const struct inode_operations ext4_symlink_inode_operations = {
.get_link = page_get_link,
.setattr = ext4_setattr,
+ .getattr = ext4_getattr,
.listxattr = ext4_listxattr,
};
const struct inode_operations ext4_fast_symlink_inode_operations = {
.get_link = simple_get_link,
.setattr = ext4_setattr,
+ .getattr = ext4_getattr,
.listxattr = ext4_listxattr,
};
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-20 16:01:52 +0000