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[PATCH] cleanup the usage of SEND_SIG_xxx constants

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This patch simplifies some checks for magic siginfo values.  It should not
change the behaviour in any way.

Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Oleg Nesterov
2005-10-30 15:03:45 -08:00
committed by Linus Torvalds
parent b67a1b9e4b
commit 621d31219d
3 changed files with 13 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/signal.c
+7 -11
View File
@@ -651,9 +651,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
if (!valid_signal(sig))
return error;
error = -EPERM;
if ((info == SEND_SIG_NOINFO ||
(info != SEND_SIG_PRIV && info != SEND_SIG_FORCED
&& SI_FROMUSER(info)))
if ((info == SEND_SIG_NOINFO || (!is_si_special(info) && SI_FROMUSER(info)))
&& ((sig != SIGCONT) ||
(current->signal->session != t->signal->session))
&& (current->euid ^ t->suid) && (current->euid ^ t->uid)
@@ -802,7 +800,7 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t,
pass on the info struct. */
q = __sigqueue_alloc(t, GFP_ATOMIC, (sig < SIGRTMIN &&
(info < SEND_SIG_FORCED ||
(is_si_special(info) ||
info->si_code >= 0)));
if (q) {
list_add_tail(&q->list, &signals->list);
@@ -825,16 +823,14 @@ static int send_signal(int sig, struct siginfo *info, struct task_struct *t,
copy_siginfo(&q->info, info);
break;
}
} else {
if (sig >= SIGRTMIN
&& info != SEND_SIG_NOINFO && info != SEND_SIG_PRIV
&& info->si_code != SI_USER)
} else if (!is_si_special(info)) {
if (sig >= SIGRTMIN && info->si_code != SI_USER)
/*
* Queue overflow, abort. We may abort if the signal was rt
* and sent by user using something other than kill().
*/
return -EAGAIN;
if ((info > SEND_SIG_PRIV) && (info->si_code == SI_TIMER))
if (info->si_code == SI_TIMER)
/*
* Set up a return to indicate that we dropped
* the signal.
@@ -860,7 +856,7 @@ specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
BUG();
assert_spin_locked(&t->sighand->siglock);
if ((info > SEND_SIG_FORCED) && (info->si_code == SI_TIMER))
if (!is_si_special(info) && (info->si_code == SI_TIMER))
/*
* Set up a return to indicate that we dropped the signal.
*/
@@ -1052,7 +1048,7 @@ __group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
assert_spin_locked(&p->sighand->siglock);
handle_stop_signal(sig, p);
if ((info > SEND_SIG_FORCED) && (info->si_code == SI_TIMER))
if (!is_si_special(info) && (info->si_code == SI_TIMER))
/*
* Set up a return to indicate that we dropped the signal.
*/