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ksmbd: fix control flow issues in sid_to_id()

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Addresses-Coverity reported Control flow issues in sid_to_id()
/fs/ksmbd/smbacl.c: 277 in sid_to_id()
271
272	if (sidtype == SIDOWNER) {
273		kuid_t uid;
274		uid_t id;
275
276		id = le32_to_cpu(psid->sub_auth[psid->num_subauth - 1]);
>>>	CID 1506810:  Control flow issues  (NO_EFFECT)
>>>	This greater-than-or-equal-to-zero comparison of an unsigned value
>>>	is always true. "id >= 0U".
277		if (id >= 0) {
278			/*
279			 * Translate raw sid into kuid in the server's user
280			 * namespace.
281			 */
282			uid = make_kuid(&init_user_ns, id);

Addresses-Coverity: ("Control flow issues")
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2021-09-07 08:16:26 +09:00 committed by Steve French
parent 4ffd5264e8
commit 4cf0ccd033
1 changed files with 20 additions and 24 deletions
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44
fs/ksmbd/smbacl.c
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@ -274,38 +274,34 @@ static int sid_to_id(struct user_namespace *user_ns,
uid_t id;
id = le32_to_cpu(psid->sub_auth[psid->num_subauth - 1]);
if (id >= 0) {
/*
* Translate raw sid into kuid in the server's user
* namespace.
*/
uid = make_kuid(&init_user_ns, id);
/*
* Translate raw sid into kuid in the server's user
* namespace.
*/
uid = make_kuid(&init_user_ns, id);
/* If this is an idmapped mount, apply the idmapping. */
uid = kuid_from_mnt(user_ns, uid);
if (uid_valid(uid)) {
fattr->cf_uid = uid;
rc = 0;
}
/* If this is an idmapped mount, apply the idmapping. */
uid = kuid_from_mnt(user_ns, uid);
if (uid_valid(uid)) {
fattr->cf_uid = uid;
rc = 0;
}
} else {
kgid_t gid;
gid_t id;
id = le32_to_cpu(psid->sub_auth[psid->num_subauth - 1]);
if (id >= 0) {
/*
* Translate raw sid into kgid in the server's user
* namespace.
*/
gid = make_kgid(&init_user_ns, id);
/*
* Translate raw sid into kgid in the server's user
* namespace.
*/
gid = make_kgid(&init_user_ns, id);
/* If this is an idmapped mount, apply the idmapping. */
gid = kgid_from_mnt(user_ns, gid);
if (gid_valid(gid)) {
fattr->cf_gid = gid;
rc = 0;
}
/* If this is an idmapped mount, apply the idmapping. */
gid = kgid_from_mnt(user_ns, gid);
if (gid_valid(gid)) {
fattr->cf_gid = gid;
rc = 0;
}
}