Use a macro definition for check_block_validity() to clean up the .c
files a wee bit.
Also start passing the line number to ext4_check_dir since we're going
to need it in upcoming patch.
Signed-off-by: "Theodore Ts'o" <tytso@xxxxxxx>
---
fs/ext4/dir.c | 11 ++++++-----
fs/ext4/ext4.h | 8 +++++---
fs/ext4/namei.c | 14 ++++++--------
3 files changed, 17 insertions(+), 16 deletions(-)
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 2965c39..af581f0 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -61,10 +61,11 @@ static unsigned char get_dtype(struct super_block *sb, int filetype)
}
-int ext4_check_dir_entry(const char *function, struct inode *dir,
- struct ext4_dir_entry_2 *de,
- struct buffer_head *bh,
- unsigned int offset)
+int __ext4_check_dir_entry(const char *function, unsigned int line,
+ struct inode *dir,
+ struct ext4_dir_entry_2 *de,
+ struct buffer_head *bh,
+ unsigned int offset)
{
const char *error_msg = NULL;
const int rlen = ext4_rec_len_from_disk(de->rec_len,
@@ -194,7 +195,7 @@ revalidate:
while (!error && filp->f_pos < inode->i_size
&& offset < sb->s_blocksize) {
de = (struct ext4_dir_entry_2 *) (bh->b_data + offset);
- if (!ext4_check_dir_entry("ext4_readdir", inode, de,
+ if (!ext4_check_dir_entry(inode, de,
bh, offset)) {
/*
* On error, skip the f_pos to the next block
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 5a41881..73465b2 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -1515,9 +1515,11 @@ extern unsigned ext4_init_block_bitmap(struct super_block *sb,
ext4_init_block_bitmap(sb, NULL, group, desc)
/* dir.c */
-extern int ext4_check_dir_entry(const char *, struct inode *,
- struct ext4_dir_entry_2 *,
- struct buffer_head *, unsigned int);
+extern int __ext4_check_dir_entry(const char *, unsigned int, struct inode *,
+ struct ext4_dir_entry_2 *,
+ struct buffer_head *, unsigned int);
+#define ext4_check_dir_entry(dir, de, bh, offset) \
+ __ext4_check_dir_entry(__func__, __LINE__, (dir), (de), (bh), (offset))
extern int ext4_htree_store_dirent(struct file *dir_file, __u32 hash,
__u32 minor_hash,
struct ext4_dir_entry_2 *dirent);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 5a61f77..ea8b59d 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -605,7 +605,7 @@ static int htree_dirblock_to_tree(struct file *dir_file,
dir->i_sb->s_blocksize -
EXT4_DIR_REC_LEN(0));
for (; de < top; de = ext4_next_entry(de, dir->i_sb->s_blocksize)) {
- if (!ext4_check_dir_entry("htree_dirblock_to_tree", dir, de, bh,
+ if (!ext4_check_dir_entry(dir, de, bh,
(block<<EXT4_BLOCK_SIZE_BITS(dir->i_sb))
+((char *)de - bh->b_data))) {
/* On error, skip the f_pos to the next block. */
@@ -844,8 +844,7 @@ static inline int search_dirblock(struct buffer_head *bh,
if ((char *) de + namelen <= dlimit &&
ext4_match (namelen, name, de)) {
/* found a match - just to be sure, do a full check */
- if (!ext4_check_dir_entry("ext4_find_entry",
- dir, de, bh, offset))
+ if (!ext4_check_dir_entry(dir, de, bh, offset))
return -1;
*res_dir = de;
return 1;
@@ -1019,7 +1018,7 @@ static struct buffer_head * ext4_dx_find_entry(struct inode *dir, const struct q
int off = (block << EXT4_BLOCK_SIZE_BITS(sb))
+ ((char *) de - bh->b_data);
- if (!ext4_check_dir_entry(__func__, dir, de, bh, off)) {
+ if (!ext4_check_dir_entry(dir, de, bh, off)) {
brelse(bh);
*err = ERR_BAD_DX_DIR;
goto errout;
@@ -1303,8 +1302,7 @@ static int add_dirent_to_buf(handle_t *handle, struct dentry *dentry,
de = (struct ext4_dir_entry_2 *)bh->b_data;
top = bh->b_data + blocksize - reclen;
while ((char *) de <= top) {
- if (!ext4_check_dir_entry("ext4_add_entry", dir, de,
- bh, offset))
+ if (!ext4_check_dir_entry(dir, de, bh, offset))
return -EIO;
if (ext4_match(namelen, name, de))
return -EEXIST;
@@ -1671,7 +1669,7 @@ static int ext4_delete_entry(handle_t *handle,
pde = NULL;
de = (struct ext4_dir_entry_2 *) bh->b_data;
while (i < bh->b_size) {
- if (!ext4_check_dir_entry("ext4_delete_entry", dir, de, bh, i))
+ if (!ext4_check_dir_entry(dir, de, bh, i))
return -EIO;
if (de == de_del) {
BUFFER_TRACE(bh, "get_write_access");
@@ -1954,7 +1952,7 @@ static int empty_dir(struct inode *inode)
}
de = (struct ext4_dir_entry_2 *) bh->b_data;
}
- if (!ext4_check_dir_entry("empty_dir", inode, de, bh, offset)) {
+ if (!ext4_check_dir_entry(inode, de, bh, offset)) {
de = (struct ext4_dir_entry_2 *)(bh->b_data +
sb->s_blocksize);
offset = (offset | (sb->s_blocksize - 1)) + 1;
--
1.7.0.4
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