[PATCH v2 06/17] signal: make kill_ok_by_cred() return bool

[Christian Brauner]

kill_ok_by_cred() already behaves like a boolean function. Let's actually
declare it as such too.

Signed-off-by: Christian Brauner <christ...@brauner.io>
---
v1->v2:
* unchanged
v0->v1:
* unchanged
---
 kernel/signal.c | 17 ++++++-----------
 1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index 00ed69d33282..bbd15e984a84 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -717,21 +717,16 @@ static inline bool si_fromuser(const struct siginfo *info)
 /*
  * called with RCU read lock from check_kill_permission()
  */
-static int kill_ok_by_cred(struct task_struct *t)
+static bool kill_ok_by_cred(struct task_struct *t)
 {
        const struct cred *cred = current_cred();
        const struct cred *tcred = __task_cred(t);
 
-       if (uid_eq(cred->euid, tcred->suid) ||
-           uid_eq(cred->euid, tcred->uid)  ||
-           uid_eq(cred->uid,  tcred->suid) ||
-           uid_eq(cred->uid,  tcred->uid))
-               return 1;
-
-       if (ns_capable(tcred->user_ns, CAP_KILL))
-               return 1;
-
-       return 0;
+       return uid_eq(cred->euid, tcred->suid) ||
+              uid_eq(cred->euid, tcred->uid) ||
+              uid_eq(cred->uid, tcred->suid) ||
+              uid_eq(cred->uid, tcred->uid) ||
+              ns_capable(tcred->user_ns, CAP_KILL);
 }
 
 /*
-- 
2.17.0