Attachment 175049 Details for Bug 212829 – patch to daemon.c v1

[patch] patch to daemon.c v1

daemon.c.patch (text/plain), 1.92 KB, created by Dave Cottlehuber on 2016-09-22 09:15:50 UTC

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Creator: Dave Cottlehuber

Created: 2016-09-22 09:15:50 UTC

Size: 1.92 KB

patch

obsolete

>commit 3b3867f76d97f19db41389505954f29400488c4f
>Author: Dave Cottlehuber <dch@skunkwerks.at>
>Date:   Thu Sep 22 11:00:45 2016 +0200
>
>    add optional flag -H to propagate SIGHUP to child process
>
>diff --git a/daemon.c b/daemon.c
>index 23051fd..2d8bec7 100644
>--- a/daemon.c
>+++ b/daemon.c
>@@ -55,14 +55,14 @@ main(int argc, char *argv[])
> {
> 	struct pidfh  *ppfh, *pfh;
> 	sigset_t mask, oldmask;
>-	int ch, nochdir, noclose, restart, serrno;
>+	int ch, nochdir, noclose, nohup, restart, serrno;
> 	const char *pidfile, *ppidfile, *title, *user;
> 	pid_t otherpid, pid;
> 
> 	nochdir = noclose = 1;
>-	restart = 0;
>+	restart = nohup = 0 ;
> 	ppidfile = pidfile = title = user = NULL;
>-	while ((ch = getopt(argc, argv, "cfp:P:rt:u:")) != -1) {
>+	while ((ch = getopt(argc, argv, "cfp:P:rt:u:H")) != -1) {
> 		switch (ch) {
> 		case 'c':
> 			nochdir = 0;
>@@ -85,6 +85,9 @@ main(int argc, char *argv[])
> 		case 'u':
> 			user = optarg;
> 			break;
>+		case 'H':
>+			nohup = 1;
>+			break;
> 		default:
> 			usage();
> 		}
>@@ -165,6 +168,9 @@ main(int argc, char *argv[])
> 		sigemptyset(&mask);
> 		sigaddset(&mask, SIGTERM);
> 		sigaddset(&mask, SIGCHLD);
>+		if (nohup) {
>+			sigaddset(&mask, SIGHUP);
>+		}
> 		if (sigprocmask(SIG_SETMASK, &mask, &oldmask) == -1) {
> 			warn("sigprocmask");
> 			goto exit;
>@@ -265,7 +271,13 @@ wait_child(pid_t pid, sigset_t *mask)
> 				return (-1);
> 			}
> 			continue;
>-		default:
>+		case SIGHUP:
>+			if (nohup) {}
>+			if (kill(pid, signo) == -1) {
>+				warn("hup");
>+				return (-1);
>+			}
>+			continue;		default:
> 			warnx("sigwaitinfo: invalid signal: %d", signo);
> 			return (-1);
> 		}
>@@ -276,7 +288,7 @@ static void
> usage(void)
> {
> 	(void)fprintf(stderr, "%s\n\t%s\n",
>-	    "usage: daemon [-cfr] [-p child_pidfile] [-P supervisor_pidfile]",
>+	    "usage: daemon [-cfrH] [-p child_pidfile] [-P supervisor_pidfile]",
> 	    "[-t title] [-u user] command arguments ...");
> 	exit(1);
> }

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