diff options
| author | Christian Brauner <[email protected]> | 2018-08-21 21:59:55 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2018-08-22 10:52:50 -0700 |
| commit | bb17fcca078fc56ea7c7611cbe92687021cf6a31 (patch) | |
| tree | 95cae1bcb93ad51fff0b309fc90d2ba6131e5e66 | |
| parent | 52cba1a274818c3ee6299c1a1b476e7bc5037a2f (diff) | |
signal: make kill_as_cred_perm() return bool
kill_as_cred_perm() already behaves like a boolean function. Let's
actually declare it as such too.
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Christian Brauner <[email protected]>
Reviewed-by: Andrew Morton <[email protected]>
Cc: Al Viro <[email protected]>
Cc: Eric W. Biederman <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: James Morris <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Stephen Smalley <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | kernel/signal.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/kernel/signal.c b/kernel/signal.c index 8a828baa0f93..5b0fb57b23f0 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1339,14 +1339,15 @@ 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" */ |