Messages in this thread Patch in this message |  | | From | zhouchuangao <> | Subject | [PATCH] kernel/signal: Modify the comment of function check_kill_permission | Date | Sun, 9 May 2021 18:26:20 -0700 |
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Maybe it's easier for us to understand the function of check_kill_permission().
Signed-off-by: zhouchuangao <zhouchuangao@vivo.com> --- kernel/signal.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/kernel/signal.c b/kernel/signal.c index 66e8864..8335f17 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -861,8 +861,10 @@ static bool kill_ok_by_cred(struct task_struct *t) } /* - * Bad permissions for sending the signal - * - the caller must hold the RCU read lock + * Check whether the caller has permissions to send the signal. + * - The caller must hold the RCU read lock; + * - Return 0 means permission is allowed, otherwise returns the + * corresponding error number. */ static int check_kill_permission(int sig, struct kernel_siginfo *info, struct task_struct *t) -- 2.7.4
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