lkml.org 
[lkml]   [2021]   [May]   [9]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] kernel/signal: Modify the comment of function check_kill_permission
Date
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
\
 
 \ /
  Last update: 2021-05-10 03:36    [W:0.039 / U:0.692 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site