[PATCH v1 02/20] signal: make kill_as_cred_perm() return bool

[Christian Brauner]

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

Signed-off-by: Christian Brauner <christ...@brauner.io>
---
v0->v1:
* simplify to use a single return
---
 kernel/signal.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/kernel/signal.c b/kernel/signal.c
index c756008d589e..6c71d6b8d2b8 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1349,14 +1349,15 @@ static int kill_proc_info(int sig, struct siginfo 
*info, pid_t pid)
        return error;
 }
 
-static int kill_as_cred_perm(const struct cred *cred,
-                            struct task_struct *target)
+static inline bool kill_as_cred_perm(const struct cred *cred,
+                                    struct task_struct *target)
 {
        const struct cred *pcred = __task_cred(target);
-       if (!uid_eq(cred->euid, pcred->suid) && !uid_eq(cred->euid, pcred->uid) 
&&
-           !uid_eq(cred->uid,  pcred->suid) && !uid_eq(cred->uid,  pcred->uid))
-               return 0;
-       return 1;
+
+       return uid_eq(cred->euid, pcred->suid) ||
+              uid_eq(cred->euid, pcred->uid) ||
+              uid_eq(cred->uid, pcred->suid) ||
+              uid_eq(cred->uid, pcred->uid);
 }
 
 /* like kill_pid_info(), but doesn't use uid/euid of "current" */
-- 
2.17.0