diff options
| -rw-r--r-- | fs/ext4/ext4.h | 1 | ||||
| -rw-r--r-- | fs/ext4/inode.c | 7 | ||||
| -rw-r--r-- | fs/ext4/namei.c | 4 | ||||
| -rw-r--r-- | fs/ext4/super.c | 2 |
4 files changed, 11 insertions, 3 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 1eb5b7b..012e89b 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -2109,6 +2109,7 @@ int do_journal_get_write_access(handle_t *handle, #define CONVERT_INLINE_DATA 2 extern struct inode *ext4_iget(struct super_block *, unsigned long); +extern struct inode *ext4_iget_normal(struct super_block *, unsigned long); extern int ext4_write_inode(struct inode *, struct writeback_control *); extern int ext4_setattr(struct dentry *, struct iattr *); extern int ext4_getattr(struct vfsmount *mnt, struct dentry *dentry, diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 59983b2..e204d8a 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -4104,6 +4104,13 @@ bad_inode: return ERR_PTR(ret); } +struct inode *ext4_iget_normal(struct super_block *sb, unsigned long ino) +{ + if (ino < EXT4_FIRST_INO(sb) && ino != EXT4_ROOT_INO) + return ERR_PTR(-EIO); + return ext4_iget(sb, ino); +} + static int ext4_inode_blocks_set(handle_t *handle, struct ext4_inode *raw_inode, struct ext4_inode_info *ei) diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index a2a9d40..7037ecf 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -1417,7 +1417,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi dentry); return ERR_PTR(-EIO); } - inode = ext4_iget(dir->i_sb, ino); + inode = ext4_iget_normal(dir->i_sb, ino); if (inode == ERR_PTR(-ESTALE)) { EXT4_ERROR_INODE(dir, "deleted inode referenced: %u", @@ -1450,7 +1450,7 @@ struct dentry *ext4_get_parent(struct dentry *child) return ERR_PTR(-EIO); } - return d_obtain_alias(ext4_iget(child->d_inode->i_sb, ino)); + return d_obtain_alias(ext4_iget_normal(child->d_inode->i_sb, ino)); } /* diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 1070d6e..a0811cc 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1001,7 +1001,7 @@ static struct inode *ext4_nfs_get_inode(struct super_block *sb, * Currently we don't know the generation for parent directory, so * a generation of 0 means "accept any" */ - inode = ext4_iget(sb, ino); + inode = ext4_iget_normal(sb, ino); if (IS_ERR(inode)) return ERR_CAST(inode); if (generation && inode->i_generation != generation) { |
