From 14b8869ff4f00f105ea76678997b4d49d27baae3 Mon Sep 17 00:00:00 2001 From: Eric Van Hensbergen Date: Wed, 6 Feb 2008 19:25:05 -0600 Subject: [PATCH] 9p: fix mmap to be read-only v9fs was allowing writable mmap which could lead to kernel BUG() cases. This sets the mmap function to generic_file_readonly_mmap which (correctly) returns an error to applications which open mmap for writing. Signed-off-by: Eric Van Hensbergen --- fs/9p/vfs_file.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/9p/vfs_file.c b/fs/9p/vfs_file.c index ba4b1caa9c43..a616fff8906d 100644 --- a/fs/9p/vfs_file.c +++ b/fs/9p/vfs_file.c @@ -184,7 +184,7 @@ static const struct file_operations v9fs_cached_file_operations = { .open = v9fs_file_open, .release = v9fs_dir_release, .lock = v9fs_file_lock, - .mmap = generic_file_mmap, + .mmap = generic_file_readonly_mmap, }; const struct file_operations v9fs_file_operations = { @@ -194,5 +194,5 @@ const struct file_operations v9fs_file_operations = { .open = v9fs_file_open, .release = v9fs_dir_release, .lock = v9fs_file_lock, - .mmap = generic_file_mmap, + .mmap = generic_file_readonly_mmap, };