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authorEric W. Biederman <ebiederm@xmission.com>2013-01-31 07:21:14 +0400
committerEric W. Biederman <ebiederm@xmission.com>2013-02-13 18:00:53 +0400
commitd83f5901bc0cd7131a3b8534169ee889efc4c257 (patch)
treeec47947fcec33d9d373367d86b787b08be997168 /include/linux/coda_psdev.h
parent9fd973e085f7759f710603422b2e11ad5f2e000d (diff)
downloadlinux-d83f5901bc0cd7131a3b8534169ee889efc4c257.tar.xz
coda: Restrict coda messages to the initial user namespace
Remove the slight chance that uids and gids in coda messages will be interpreted in the wrong user namespace. - Only allow processes in the initial user namespace to open the coda character device to communicate with coda filesystems. - Explicitly convert the uids in the coda header into the initial user namespace. - In coda_vattr_to_attr make kuids and kgids from the initial user namespace uids and gids in struct coda_vattr that just came from userspace. - In coda_iattr_to_vattr convert kuids and kgids into uids and gids in the intial user namespace and store them in struct coda_vattr for sending to coda userspace programs. Nothing needs to be changed with mounts as coda does not support being mounted in anything other than the initial user namespace. Cc: Jan Harkes <jaharkes@cs.cmu.edu> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Diffstat (limited to 'include/linux/coda_psdev.h')
-rw-r--r--include/linux/coda_psdev.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/coda_psdev.h b/include/linux/coda_psdev.h
index 8031d6eef102..5b8721efa948 100644
--- a/include/linux/coda_psdev.h
+++ b/include/linux/coda_psdev.h
@@ -34,7 +34,7 @@ int venus_lookup(struct super_block *sb, struct CodaFid *fid,
const char *name, int length, int *type,
struct CodaFid *resfid);
int venus_close(struct super_block *sb, struct CodaFid *fid, int flags,
- vuid_t uid);
+ kuid_t uid);
int venus_open(struct super_block *sb, struct CodaFid *fid, int flags,
struct file **f);
int venus_mkdir(struct super_block *sb, struct CodaFid *dirfid,