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signal: Pass pid type into do_send_sig_info

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This passes the information we already have at the call sight into
do_send_sig_info.  Ultimately allowing for better handling of signals
sent to a group of processes during fork.

Signed-off-by: "Eric W. Biederman" <[email protected]>
This commit is contained in:
Eric W. Biederman 2018-07-21 10:45:15 -05:00
commit 40b3b02535
5 changed files with 12 additions and 12 deletions
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10
kernel/signal.c
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@ -1161,13 +1161,13 @@ specific_send_sig_info(int sig, struct siginfo *info, struct task_struct *t)
}
int do_send_sig_info(int sig, struct siginfo *info, struct task_struct *p,
bool group)
enum pid_type type)
{
unsigned long flags;
int ret = -ESRCH;
if (lock_task_sighand(p, &flags)) {
ret = send_signal(sig, info, p, group);
ret = send_signal(sig, info, p, type != PIDTYPE_PID);
unlock_task_sighand(p, &flags);
}
@ -1284,7 +1284,7 @@ int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p,
rcu_read_unlock();
if (!ret && sig)
ret = do_send_sig_info(sig, info, p, true);
ret = do_send_sig_info(sig, info, p, type);
return ret;
}
@ -1448,7 +1448,7 @@ int send_sig_info(int sig, struct siginfo *info, struct task_struct *p)
if (!valid_signal(sig))
return -EINVAL;
return do_send_sig_info(sig, info, p, false);
return do_send_sig_info(sig, info, p, PIDTYPE_PID);
}
#define __si_special(priv) \
@ -3199,7 +3199,7 @@ do_send_specific(pid_t tgid, pid_t pid, int sig, struct siginfo *info)
* probe. No signal is actually delivered.
*/
if (!error && sig) {
error = do_send_sig_info(sig, info, p, false);
error = do_send_sig_info(sig, info, p, PIDTYPE_PID);
/*
* If lock_task_sighand() failed we pretend the task
* dies after receiving the signal. The window is tiny,