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authorThomas Cedeno <thomascedeno@google.com>2020-08-11 15:39:51 +0000
committerMicah Morton <mortonm@chromium.org>2020-10-13 09:17:36 -0700
commit03ca0ec138927b16fab0dad7b869f42eb2849c94 (patch)
tree38a9af9c1e33a859b9a0001d12a8463ee739864e
parent5294bac97e12bdabbb97e9adf44d388612a700b8 (diff)
downloadlinux-stericsson-03ca0ec138927b16fab0dad7b869f42eb2849c94.tar.gz
LSM: SafeSetID: Fix warnings reported by test bot
Fix multiple cast-to-union warnings related to casting kuid_t and kgid_t types to kid_t union type. Also fix incompatible type warning that arises from accidental omission of "__rcu" qualifier on the struct setid_ruleset pointer in the argument list for safesetid_file_read(). Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Thomas Cedeno <thomascedeno@google.com> Signed-off-by: Micah Morton <mortonm@chromium.org>
-rw-r--r--security/safesetid/lsm.c26
-rw-r--r--security/safesetid/securityfs.c2
2 files changed, 14 insertions, 14 deletions
diff --git a/security/safesetid/lsm.c b/security/safesetid/lsm.c
index c08e67108a82..8a176b6adbe5 100644
--- a/security/safesetid/lsm.c
+++ b/security/safesetid/lsm.c
@@ -116,7 +116,7 @@ static int safesetid_security_capable(const struct cred *cred,
* If no policy applies to this task, allow the use of CAP_SETUID for
* other purposes.
*/
- if (setid_policy_lookup((kid_t)cred->uid, INVALID_ID, UID) == SIDPOL_DEFAULT)
+ if (setid_policy_lookup((kid_t){.uid = cred->uid}, INVALID_ID, UID) == SIDPOL_DEFAULT)
return 0;
/*
* Reject use of CAP_SETUID for functionality other than calling
@@ -131,7 +131,7 @@ static int safesetid_security_capable(const struct cred *cred,
* If no policy applies to this task, allow the use of CAP_SETGID for
* other purposes.
*/
- if (setid_policy_lookup((kid_t)cred->gid, INVALID_ID, GID) == SIDPOL_DEFAULT)
+ if (setid_policy_lookup((kid_t){.gid = cred->gid}, INVALID_ID, GID) == SIDPOL_DEFAULT)
return 0;
/*
* Reject use of CAP_SETUID for functionality other than calling
@@ -174,7 +174,7 @@ static bool id_permitted_for_cred(const struct cred *old, kid_t new_id, enum set
* RUID.
*/
permitted =
- setid_policy_lookup((kid_t)old->uid, new_id, new_type) != SIDPOL_CONSTRAINED;
+ setid_policy_lookup((kid_t){.uid = old->uid}, new_id, new_type) != SIDPOL_CONSTRAINED;
if (!permitted) {
if (new_type == UID) {
@@ -202,13 +202,13 @@ static int safesetid_task_fix_setuid(struct cred *new,
{
/* Do nothing if there are no setuid restrictions for our old RUID. */
- if (setid_policy_lookup((kid_t)old->uid, INVALID_ID, UID) == SIDPOL_DEFAULT)
+ if (setid_policy_lookup((kid_t){.uid = old->uid}, INVALID_ID, UID) == SIDPOL_DEFAULT)
return 0;
- if (id_permitted_for_cred(old, (kid_t)new->uid, UID) &&
- id_permitted_for_cred(old, (kid_t)new->euid, UID) &&
- id_permitted_for_cred(old, (kid_t)new->suid, UID) &&
- id_permitted_for_cred(old, (kid_t)new->fsuid, UID))
+ if (id_permitted_for_cred(old, (kid_t){.uid = new->uid}, UID) &&
+ id_permitted_for_cred(old, (kid_t){.uid = new->euid}, UID) &&
+ id_permitted_for_cred(old, (kid_t){.uid = new->suid}, UID) &&
+ id_permitted_for_cred(old, (kid_t){.uid = new->fsuid}, UID))
return 0;
/*
@@ -226,13 +226,13 @@ static int safesetid_task_fix_setgid(struct cred *new,
{
/* Do nothing if there are no setgid restrictions for our old RGID. */
- if (setid_policy_lookup((kid_t)old->gid, INVALID_ID, GID) == SIDPOL_DEFAULT)
+ if (setid_policy_lookup((kid_t){.gid = old->gid}, INVALID_ID, GID) == SIDPOL_DEFAULT)
return 0;
- if (id_permitted_for_cred(old, (kid_t)new->gid, GID) &&
- id_permitted_for_cred(old, (kid_t)new->egid, GID) &&
- id_permitted_for_cred(old, (kid_t)new->sgid, GID) &&
- id_permitted_for_cred(old, (kid_t)new->fsgid, GID))
+ if (id_permitted_for_cred(old, (kid_t){.gid = new->gid}, GID) &&
+ id_permitted_for_cred(old, (kid_t){.gid = new->egid}, GID) &&
+ id_permitted_for_cred(old, (kid_t){.gid = new->sgid}, GID) &&
+ id_permitted_for_cred(old, (kid_t){.gid = new->fsgid}, GID))
return 0;
/*
diff --git a/security/safesetid/securityfs.c b/security/safesetid/securityfs.c
index 642139008d42..25310468bcdd 100644
--- a/security/safesetid/securityfs.c
+++ b/security/safesetid/securityfs.c
@@ -261,7 +261,7 @@ static ssize_t safesetid_gid_file_write(struct file *file,
}
static ssize_t safesetid_file_read(struct file *file, char __user *buf,
- size_t len, loff_t *ppos, struct mutex *policy_update_lock, struct setid_ruleset* ruleset)
+ size_t len, loff_t *ppos, struct mutex *policy_update_lock, struct __rcu setid_ruleset* ruleset)
{
ssize_t res = 0;
struct setid_ruleset *pol;