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scm: Stop passing struct cred

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Now that uids and gids are completely encapsulated in kuid_t
and kgid_t we no longer need to pass struct cred which allowed
us to test both the uid and the user namespace for equality.

Passing struct cred potentially allows us to pass the entire group
list as BSD does but I don't believe the cost of cache line misses
justifies retaining code for a future potential application.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric W. Biederman 2013-04-03 17:28:16 +00:00 • committed by David S. Miller
parent d978a6361a
commit 6b0ee8c036
4 changed files with 16 additions and 35 deletions
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3
include/net/af_unix.h
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@ -29,7 +29,8 @@ struct unix_address {
struct unix_skb_parms {
struct pid *pid; /* Skb credentials */
const struct cred *cred;
kuid_t uid;
kgid_t gid;
struct scm_fp_list *fp; /* Passed files */
#ifdef CONFIG_SECURITY_NETWORK
u32 secid; /* Security ID */