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cifs: Use BUILD_BUG_ON to validate uids and gids are the same size
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>
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@ -297,6 +297,7 @@ sid_to_id(struct cifs_sb_info *cifs_sb, struct cifs_sid *psid,
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* probably a safe assumption but might be better to check based on
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* sidtype.
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*/
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BUILD_BUG_ON(sizeof(uid_t) != sizeof(gid_t));
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if (sidkey->datalen != sizeof(uid_t)) {
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rc = -EIO;
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cFYI(1, "%s: Downcall contained malformed key "
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