From a1f9d8d23fef301ba0c0b4983e0aa947168e1c37 Mon Sep 17 00:00:00 2001 From: Latchesar Ionkov Date: Thu, 22 Sep 2005 21:43:52 -0700 Subject: [PATCH] v9fs: replace strlen on newly allocated by __getname buffers to PATH_MAX 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 Cc: Eric Van Hensbergen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/9p/vfs_inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'fs/9p') diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 0c13fc600049..b16322db5ce6 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -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); -- cgit v1.2.2