Replace daemon() function with fork()

daemon() is a BSD-ism. Although it is available on many platforms
it is not a standard function. Some platforms (e.g. MacOSX) deprecated
it.

It is safer just to use fork() function that is a part of POSIX.

1 files changed, 15 insertions, 2 deletions

diff --git a/util/ulockmgr_server.c b/util/ulockmgr_server.c
index 583fcf9..baef45d 100644
--- a/util/ulockmgr_server.c
+++ b/util/ulockmgr_server.c
@@ -352,11 +352,24 @@ int main(int argc, char *argv[])
 	if (*end)
 		goto out_inval;
 
-	if (daemon(0, 1) == -1) {
-		perror("ulockmgr_server: daemon");
+	/* demonize current process */
+	switch(fork()) {
+	case -1:
+		perror("ulockmgr_server: fork");
 		exit(1);
+	case 0:
+		break;
+	default:
+		_exit(0);
 	}
 
+	if (setsid() == -1) {
+		perror("ulockmgr_server: setsid");
+		exit(1);
+	}
+
+	(void) chdir("/");
+
 	sigemptyset(&empty);
 	sigprocmask(SIG_SETMASK, &empty, NULL);