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cifs: Use BUILD_BUG_ON to validate uids and gids are the same size

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The assumption that sizeof(uid_t) is the same as sizeof(gid_t) is
completely reasonable but since we can verify the condition at
compile time.

Cc: Steve French <smfrench@gmail.com>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
This commit is contained in:
Eric W. Biederman 2013-02-06 00:10:23 -08:00
parent 46bbc25f9f
commit 355958f289
1 changed files with 1 additions and 0 deletions
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fs/cifs/cifsacl.c
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@ -297,6 +297,7 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
* probably a safe assumption but might be better to check based on * probably a safe assumption but might be better to check based on
* sidtype. * sidtype.
*/ */
BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
if (sidkey->datalen != sizeof(uid_t)) { if (sidkey->datalen != sizeof(uid_t)) {
rc = -EIO; rc = -EIO;
cFYI(1, "%s: Downcall contained malformed key " cFYI(1, "%s: Downcall contained malformed key "