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| author | Kostik Belousov <kostikbel@gmail.com> | 2005-09-28 18:21:28 +0300 |
|---|---|---|
| committer | Chris Wright <chrisw@osdl.org> | 2005-09-29 15:42:08 -0700 |
| commit | 411b67b4b6a4dd1e0292a6a58dd753978179d173 (patch) | |
| tree | 7aa7d712198635b6dac0af3af265808241806bbb /fs | |
| parent | aa55a08687059aa169d10a313c41f238c2070488 (diff) | |
| download | op-kernel-dev-411b67b4b6a4dd1e0292a6a58dd753978179d173.zip op-kernel-dev-411b67b4b6a4dd1e0292a6a58dd753978179d173.tar.gz | |
[PATCH] readv/writev syscalls are not checked by lsm
it seems that readv(2)/writev(2) syscalls do not call
file_permission callback. Looks like this is overlook.
I have filled the issue into redhat bugzilla as
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169433
and got the recommendation to post this on lsm mailing list.
The following trivial patch solves the problem.
Signed-off-by: Kostik Belousov <kostikbel@gmail.com>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/read_write.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index b60324a..a091ee4 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -499,6 +499,9 @@ static ssize_t do_readv_writev(int type, struct file *file, ret = rw_verify_area(type, file, pos, tot_len); if (ret) goto out; + ret = security_file_permission(file, type == READ ? MAY_READ : MAY_WRITE); + if (ret) + goto out; fnv = NULL; if (type == READ) { |
