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Subject[PATCH 3/7] f2fs: verify file type early in f2fs_fallocate
Date
This patch changes to verify file type early in f2fs_fallocate for
cleanup, meanwhile this also fixes to add missing verification for
expand_inode_data.

Signed-off-by: Chao Yu <chao2.yu@samsung.com>
---
fs/f2fs/file.c | 16 ++++------------
1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index ac97f78..9e03622 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -775,9 +775,6 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len)
loff_t off_start, off_end;
int ret = 0;

- if (!S_ISREG(inode->i_mode))
- return -EOPNOTSUPP;
-
if (f2fs_has_inline_data(inode)) {
ret = f2fs_convert_inline_inode(inode);
if (ret)
@@ -918,9 +915,6 @@ static int f2fs_collapse_range(struct inode *inode, loff_t offset, loff_t len)
loff_t new_size;
int ret;

- if (!S_ISREG(inode->i_mode))
- return -EINVAL;
-
if (offset + len >= i_size_read(inode))
return -EINVAL;

@@ -969,9 +963,6 @@ static int f2fs_zero_range(struct inode *inode, loff_t offset, loff_t len,
loff_t off_start, off_end;
int ret = 0;

- if (!S_ISREG(inode->i_mode))
- return -EINVAL;
-
ret = inode_newsize_ok(inode, (len + offset));
if (ret)
return ret;
@@ -1078,9 +1069,6 @@ static int f2fs_insert_range(struct inode *inode, loff_t offset, loff_t len)
loff_t new_size;
int ret;

- if (!S_ISREG(inode->i_mode))
- return -EINVAL;
-
new_size = i_size_read(inode) + len;
if (new_size > inode->i_sb->s_maxbytes)
return -EFBIG;
@@ -1238,6 +1226,10 @@ static long f2fs_fallocate(struct file *file, int mode,
struct inode *inode = file_inode(file);
long ret = 0;

+ /* f2fs only support ->fallocate for regular file */
+ if (!S_ISREG(inode->i_mode))
+ return -EINVAL;
+
if (f2fs_encrypted_inode(inode) &&
(mode & (FALLOC_FL_COLLAPSE_RANGE | FALLOC_FL_INSERT_RANGE)))
return -EOPNOTSUPP;
--
2.4.2



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