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-rw-r--r--fs/ext4/balloc.c4
-rw-r--r--fs/ext4/ext4.h4
-rw-r--r--fs/ext4/ialloc.c4
-rw-r--r--fs/ext4/inode.c34
-rw-r--r--fs/ext4/migrate.c4
-rw-r--r--fs/ext4/namei.c5
-rw-r--r--fs/ext4/super.c46
7 files changed, 57 insertions, 44 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index 5745d53c67e8..99b6324290db 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -486,8 +486,8 @@ static int ext4_has_free_clusters(struct ext4_sb_info *sbi,
return 1;
/* Hm, nope. Are (enough) root reserved clusters available? */
- if (sbi->s_resuid == current_fsuid() ||
- ((sbi->s_resgid != 0) && in_group_p(sbi->s_resgid)) ||
+ if (uid_eq(sbi->s_resuid, current_fsuid()) ||
+ (!gid_eq(sbi->s_resgid, GLOBAL_ROOT_GID) && in_group_p(sbi->s_resgid)) ||
capable(CAP_SYS_RESOURCE) ||
(flags & EXT4_MB_USE_ROOT_BLOCKS)) {
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index decc15d1b4b6..cfc4e01b3c83 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1174,8 +1174,8 @@ struct ext4_sb_info {
unsigned int s_mount_flags;
unsigned int s_def_mount_opt;
ext4_fsblk_t s_sb_block;
- uid_t s_resuid;
- gid_t s_resgid;
+ kuid_t s_resuid;
+ kgid_t s_resgid;
unsigned short s_mount_state;
unsigned short s_pad;
int s_addr_per_block_bits;
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 03583ab52e0e..d48e8b14928c 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -838,8 +838,8 @@ got:
}
if (owner) {
inode->i_mode = mode;
- inode->i_uid = owner[0];
- inode->i_gid = owner[1];
+ i_uid_write(inode, owner[0]);
+ i_gid_write(inode, owner[1]);
} else if (test_opt(sb, GRPID)) {
inode->i_mode = mode;
inode->i_uid = current_fsuid();
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index fc083e87c231..02bc8cbe7281 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3696,6 +3696,8 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
journal_t *journal = EXT4_SB(sb)->s_journal;
long ret;
int block;
+ uid_t i_uid;
+ gid_t i_gid;
inode = iget_locked(sb, ino);
if (!inode)
@@ -3744,12 +3746,14 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
}
inode->i_mode = le16_to_cpu(raw_inode->i_mode);
- inode->i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
- inode->i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
+ i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
if (!(test_opt(inode->i_sb, NO_UID32))) {
- inode->i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
- inode->i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
+ i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
+ i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
}
+ i_uid_write(inode, i_uid);
+ i_gid_write(inode, i_gid);
set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
@@ -3962,6 +3966,8 @@ static int ext4_do_update_inode(handle_t *handle,
struct ext4_inode_info *ei = EXT4_I(inode);
struct buffer_head *bh = iloc->bh;
int err = 0, rc, block;
+ uid_t i_uid;
+ gid_t i_gid;
/* For fields not not tracking in the in-memory inode,
* initialise them to zero for new inodes. */
@@ -3970,27 +3976,27 @@ static int ext4_do_update_inode(handle_t *handle,
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);
if (!(test_opt(inode->i_sb, NO_UID32))) {
- raw_inode->i_uid_low = cpu_to_le16(low_16_bits(inode->i_uid));
- raw_inode->i_gid_low = cpu_to_le16(low_16_bits(inode->i_gid));
+ raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
+ raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
/*
* Fix up interoperability with old kernels. Otherwise, old inodes get
* re-used with the upper 16 bits of the uid/gid intact
*/
if (!ei->i_dtime) {
raw_inode->i_uid_high =
- cpu_to_le16(high_16_bits(inode->i_uid));
+ cpu_to_le16(high_16_bits(i_uid));
raw_inode->i_gid_high =
- cpu_to_le16(high_16_bits(inode->i_gid));
+ cpu_to_le16(high_16_bits(i_gid));
} else {
raw_inode->i_uid_high = 0;
raw_inode->i_gid_high = 0;
}
} else {
- raw_inode->i_uid_low =
- cpu_to_le16(fs_high2lowuid(inode->i_uid));
- raw_inode->i_gid_low =
- cpu_to_le16(fs_high2lowgid(inode->i_gid));
+ raw_inode->i_uid_low = cpu_to_le16(fs_high2lowuid(i_uid));
+ raw_inode->i_gid_low = cpu_to_le16(fs_high2lowgid(i_gid));
raw_inode->i_uid_high = 0;
raw_inode->i_gid_high = 0;
}
@@ -4178,8 +4184,8 @@ int ext4_setattr(struct dentry *dentry, struct iattr *attr)
if (is_quota_modification(inode, attr))
dquot_initialize(inode);
- if ((ia_valid & ATTR_UID && attr->ia_uid != inode->i_uid) ||
- (ia_valid & ATTR_GID && attr->ia_gid != inode->i_gid)) {
+ if ((ia_valid & ATTR_UID && !uid_eq(attr->ia_uid, inode->i_uid)) ||
+ (ia_valid & ATTR_GID && !gid_eq(attr->ia_gid, inode->i_gid))) {
handle_t *handle;
/* (user+group)*(old+new) structure, inode write (sb,
diff --git a/fs/ext4/migrate.c b/fs/ext4/migrate.c
index f39f80f8f2c5..f1bb32ec0169 100644
--- a/fs/ext4/migrate.c
+++ b/fs/ext4/migrate.c
@@ -466,8 +466,8 @@ int ext4_ext_migrate(struct inode *inode)
}
goal = (((inode->i_ino - 1) / EXT4_INODES_PER_GROUP(inode->i_sb)) *
EXT4_INODES_PER_GROUP(inode->i_sb)) + 1;
- owner[0] = inode->i_uid;
- owner[1] = inode->i_gid;
+ owner[0] = i_uid_read(inode);
+ owner[1] = i_gid_read(inode);
tmp_inode = ext4_new_inode(handle, inode->i_sb->s_root->d_inode,
S_IFREG, NULL, goal, owner);
if (IS_ERR(tmp_inode)) {
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index daf8260f0b03..5845cd97bf8b 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -1351,10 +1351,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, stru
struct dentry *ext4_get_parent(struct dentry *child)
{
__u32 ino;
- static const struct qstr dotdot = {
- .name = "..",
- .len = 2,
- };
+ static const struct qstr dotdot = QSTR_INIT("..", 2);
struct ext4_dir_entry_2 * de;
struct buffer_head *bh;
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index b8d5fc10d8c0..eb7aa3e4ef05 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1052,7 +1052,7 @@ static void destroy_inodecache(void)
void ext4_clear_inode(struct inode *inode)
{
invalidate_inode_buffers(inode);
- end_writeback(inode);
+ clear_inode(inode);
dquot_drop(inode);
ext4_discard_preallocations(inode);
if (EXT4_I(inode)->jinode) {
@@ -1493,6 +1493,8 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
{
struct ext4_sb_info *sbi = EXT4_SB(sb);
const struct mount_opts *m;
+ kuid_t uid;
+ kgid_t gid;
int arg = 0;
#ifdef CONFIG_QUOTA
@@ -1519,10 +1521,20 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
"Ignoring removed %s option", opt);
return 1;
case Opt_resuid:
- sbi->s_resuid = arg;
+ uid = make_kuid(current_user_ns(), arg);
+ if (!uid_valid(uid)) {
+ ext4_msg(sb, KERN_ERR, "Invalid uid value %d", arg);
+ return -1;
+ }
+ sbi->s_resuid = uid;
return 1;
case Opt_resgid:
- sbi->s_resgid = arg;
+ gid = make_kgid(current_user_ns(), arg);
+ if (!gid_valid(gid)) {
+ ext4_msg(sb, KERN_ERR, "Invalid gid value %d", arg);
+ return -1;
+ }
+ sbi->s_resgid = gid;
return 1;
case Opt_abort:
sbi->s_mount_flags |= EXT4_MF_FS_ABORTED;
@@ -1777,12 +1789,14 @@ static int _ext4_show_options(struct seq_file *seq, struct super_block *sb,
SEQ_OPTS_PRINT("%s", token2str(m->token));
}
- if (nodefs || sbi->s_resuid != EXT4_DEF_RESUID ||
+ if (nodefs || !uid_eq(sbi->s_resuid, make_kuid(&init_user_ns, EXT4_DEF_RESUID)) ||
le16_to_cpu(es->s_def_resuid) != EXT4_DEF_RESUID)
- SEQ_OPTS_PRINT("resuid=%u", sbi->s_resuid);
- if (nodefs || sbi->s_resgid != EXT4_DEF_RESGID ||
+ SEQ_OPTS_PRINT("resuid=%u",
+ from_kuid_munged(&init_user_ns, sbi->s_resuid));
+ if (nodefs || !gid_eq(sbi->s_resgid, make_kgid(&init_user_ns, EXT4_DEF_RESGID)) ||
le16_to_cpu(es->s_def_resgid) != EXT4_DEF_RESGID)
- SEQ_OPTS_PRINT("resgid=%u", sbi->s_resgid);
+ SEQ_OPTS_PRINT("resgid=%u",
+ from_kgid_munged(&init_user_ns, sbi->s_resgid));
def_errors = nodefs ? -1 : le16_to_cpu(es->s_errors);
if (test_opt(sb, ERRORS_RO) && def_errors != EXT4_ERRORS_RO)
SEQ_OPTS_PUTS("errors=remount-ro");
@@ -3109,8 +3123,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
sb->s_fs_info = sbi;
sbi->s_sb = sb;
sbi->s_mount_opt = 0;
- sbi->s_resuid = EXT4_DEF_RESUID;
- sbi->s_resgid = EXT4_DEF_RESGID;
+ sbi->s_resuid = make_kuid(&init_user_ns, EXT4_DEF_RESUID);
+ sbi->s_resgid = make_kgid(&init_user_ns, EXT4_DEF_RESGID);
sbi->s_inode_readahead_blks = EXT4_DEF_INODE_READAHEAD_BLKS;
sbi->s_sb_block = sb_block;
if (sb->s_bdev->bd_part)
@@ -3230,8 +3244,8 @@ static int ext4_fill_super(struct super_block *sb, void *data, int silent)
if (def_mount_opts & EXT4_DEFM_DISCARD)
set_opt(sb, DISCARD);
- sbi->s_resuid = le16_to_cpu(es->s_def_resuid);
- sbi->s_resgid = le16_to_cpu(es->s_def_resgid);
+ sbi->s_resuid = make_kuid(&init_user_ns, le16_to_cpu(es->s_def_resuid));
+ sbi->s_resgid = make_kgid(&init_user_ns, le16_to_cpu(es->s_def_resgid));
sbi->s_commit_interval = JBD2_DEFAULT_MAX_COMMIT_AGE * HZ;
sbi->s_min_batch_time = EXT4_DEF_MIN_BATCH_TIME;
sbi->s_max_batch_time = EXT4_DEF_MAX_BATCH_TIME;
@@ -4380,8 +4394,8 @@ static int ext4_unfreeze(struct super_block *sb)
struct ext4_mount_options {
unsigned long s_mount_opt;
unsigned long s_mount_opt2;
- uid_t s_resuid;
- gid_t s_resgid;
+ kuid_t s_resuid;
+ kgid_t s_resgid;
unsigned long s_commit_interval;
u32 s_min_batch_time, s_max_batch_time;
#ifdef CONFIG_QUOTA
@@ -4911,7 +4925,6 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
return -EIO;
}
- mutex_lock_nested(&inode->i_mutex, I_MUTEX_QUOTA);
bh = ext4_bread(handle, inode, blk, 1, &err);
if (!bh)
goto out;
@@ -4927,16 +4940,13 @@ static ssize_t ext4_quota_write(struct super_block *sb, int type,
err = ext4_handle_dirty_metadata(handle, NULL, bh);
brelse(bh);
out:
- if (err) {
- mutex_unlock(&inode->i_mutex);
+ if (err)
return err;
- }
if (inode->i_size < off + len) {
i_size_write(inode, off + len);
EXT4_I(inode)->i_disksize = inode->i_size;
ext4_mark_inode_dirty(handle, inode);
}
- mutex_unlock(&inode->i_mutex);
return len;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-28 06:04:25 +0300