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[PATCH] v9fs: replace strlen on newly allocated by __getname buffers to PATH_MAX

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v9fs_vfs_readlink allocates space for the link using __getname and
errorneously uses strlen on the newly allocated buffer to check if the buffer
passed by the user is bigger than the one returned by __getname.

The patch replaces the strlen usage to PATH_MAX, which is the actual size of
the buffers returned by __getname.

Signed-off-by: Latchesar Ionkov <[email protected]>
Cc: Eric Van Hensbergen <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Latchesar Ionkov 2005-09-22 21:43:52 -07:00 • committed by Linus Torvalds
commit a1f9d8d23f
1 changed files with 2 additions and 2 deletions
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4
fs/9p/vfs_inode.c
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@ -1063,8 +1063,8 @@ static int v9fs_vfs_readlink(struct dentry *dentry, char __user * buffer,
int ret;
char *link = __getname();
if (strlen(link) < buflen)
buflen = strlen(link);
if (buflen > PATH_MAX)
buflen = PATH_MAX;
dprintk(DEBUG_VFS, " dentry: %s (%p)\n", dentry->d_iname, dentry);