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| author | Eric Van Hensbergen <ericvh@opteron.homeip.net> | 2008-02-06 19:25:05 -0600 |
|---|---|---|
| committer | Eric Van Hensbergen <ericvh@opteron.homeip.net> | 2008-02-06 19:25:05 -0600 |
| commit | 14b8869ff4f00f105ea76678997b4d49d27baae3 (patch) | |
| tree | 201c06c106053c609f847531a482d73e41a8cfc9 | |
| parent | d199d652c513a010145a5a0d4e64c96361b97bee (diff) | |
| download | blackbird-op-linux-14b8869ff4f00f105ea76678997b4d49d27baae3.tar.gz blackbird-op-linux-14b8869ff4f00f105ea76678997b4d49d27baae3.zip | |
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 <ericvh@gmail.com>
| -rw-r--r-- | fs/9p/vfs_file.c | 4 |
1 files 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, }; |
