version 0.48

This commit removes the secondary mention of the -2/--stderr flag in the
start-stop-daemon man page. The flag's functionality was already
sufficiently described in an earlier section of the text.

Signed-off-by: Petr Vaněk <arkamar@atlas.cz>

NEWS.md

@@ -4,6 +4,10 @@ OpenRC NEWS
 This file will contain a list of notable changes for each release. Note
 the information in this file is in reverse order.
 
+## OpenRC 0.48
+
+This release is a maintenance release; it has no user-facing changes.
+
 ## OpenRC 0.47
 
 This release is primarily an internal cleanup release.

man/start-stop-daemon.8

@@ -183,10 +183,6 @@ Wait
 after starting and check that daemon is still running.
 Useful for daemons that check configuration after forking or stopping race
 conditions where the pidfile is written out after forking.
-.It Fl 2 , -stderr Ar logfile
-The same thing as
-.Fl 1 , -stdout
-but with the standard error output.
 .El
 .Pp
 These options are only used for stopping daemons:

meson.build

@@ -1,5 +1,5 @@
 project('OpenRC', 'c',
-  version : '0.47',
+  version : '0.48',
   license: 'BSD-2',
   default_options : [
     'c_std=c99',
@@ -176,7 +176,10 @@ cc_warning_flags_test = [
   '-Wsequence-point',
   '-Wshadow',
   '-Wwrite-strings',
+  '-Werror=implicit-int',
   '-Werror=implicit-function-declaration',
+  '-Werror=int-conversion',
+  '-Werror=incompatible-function-pointer-types',
   ]
 cc_warning_flags = cc.get_supported_arguments(cc_warning_flags_test)
 cc_flags = [cc_debug_flags, cc_os_flags, cc_warning_flags]

src/einfo/einfo.c

@@ -78,7 +78,7 @@ int main(int argc, char **argv)
 		if (strcmp(applet, "eend") == 0 ||
 		    strcmp(applet, "ewend") == 0 ||
 		    strcmp(applet, "veend") == 0 ||
-		    strcmp(applet, "vweend") == 0 ||
+		    strcmp(applet, "vewend") == 0 ||
 		    strcmp(applet, "ewaitfile") == 0)
 		{
 			errno = 0;

src/fstabinfo/fstabinfo.c

@@ -23,6 +23,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <stdbool.h>
+#include <spawn.h>
 
 /* Yay for linux and its non liking of POSIX functions.
    Okay, we could use getfsent but the man page says use getmntent instead
@@ -63,6 +64,8 @@
 #include "_usage.h"
 #include "helpers.h"
 
+extern char **environ;
+
 const char *applet = NULL;
 const char *extraopts = NULL;
 const char getoptstring[] = "MRbmop:t:" getoptstring_COMMON;
@@ -112,7 +115,7 @@ do_mount(struct ENT *ent, bool remount)
 {
 	char *argv[10];
 	pid_t pid;
-	int status;
+	int status, err;
 
 	argv[0] = UNCONST("mount");
 	argv[1] = UNCONST("-o");
@@ -137,23 +140,14 @@ do_mount(struct ENT *ent, bool remount)
 		argv[8] = NULL;
 #endif
 	}
-	switch (pid = vfork()) {
-	case -1:
-		eerrorx("%s: vfork: %s", applet, strerror(errno));
-		/* NOTREACHED */
-	case 0:
-		execvp(argv[0], argv);
-		eerror("%s: execvp: %s", applet, strerror(errno));
-		_exit(EXIT_FAILURE);
-		/* NOTREACHED */
-	default:
-		waitpid(pid, &status, 0);
-		if (WIFEXITED(status))
-			return WEXITSTATUS(status);
-		else
-			return -1;
-		/* NOTREACHED */
-	}
+	err = posix_spawnp(&pid, argv[0], NULL, NULL, argv, environ);
+	if (err)
+		eerrorx("%s: posix_spawnp: %s", applet, strerror(err));
+	while (waitpid(pid, &status, 0) < 0 && errno == EINTR);
+	if (WIFEXITED(status))
+		return WEXITSTATUS(status);
+	else
+		return -1;
 }
 
 #define OUTPUT_FILE      (1 << 1)

src/libeinfo/einfo.h

@@ -13,13 +13,8 @@
 #ifndef __EINFO_H__
 #define __EINFO_H__
 
-#if defined(__GNUC__)
-# define EINFO_PRINTF(a, b)  __attribute__((__format__(__printf__, a, b)))
-# define EINFO_XPRINTF(a, b) __attribute__((__noreturn__,__format__(__printf__, a, b)))
-#else
-# define EINFO_PRINTF(a, b)
-# define EINFO_XPRINTF(a, b)
-#endif
+#define EINFO_PRINTF(a, b)  __attribute__((__format__(__printf__, a, b)))
+#define EINFO_XPRINTF(a, b) __attribute__((__noreturn__, __format__(__printf__, a, b)))
 
 #include <sys/types.h>
 #include <stdbool.h>
@@ -74,22 +69,22 @@ void elog(int, const char * EINFO_RESTRICT, ...) EINFO_PRINTF(2, 3);
  * The x suffix means function will exit() returning failure.
  */
 /*@{*/
-int einfon(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int ewarnn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int eerrorn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int einfo(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int ewarn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-void ewarnx(const char * __EINFO_RESTRICT, ...) EINFO_XPRINTF(1, 2);
-int eerror(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-void eerrorx(const char * __EINFO_RESTRICT, ...) EINFO_XPRINTF(1, 2);
+int einfon(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int ewarnn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int eerrorn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int einfo(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int ewarn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+void ewarnx(const char * EINFO_RESTRICT, ...) EINFO_XPRINTF(1, 2);
+int eerror(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+void eerrorx(const char * EINFO_RESTRICT, ...) EINFO_XPRINTF(1, 2);
 
-int einfovn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int ewarnvn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int ebeginvn(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int eendvn(int, const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(2, 3);
-int ewendvn(int, const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(2, 3);
-int einfov(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
-int ewarnv(const char * __EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int einfovn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int ewarnvn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int ebeginvn(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int eendvn(int, const char * EINFO_RESTRICT, ...) EINFO_PRINTF(2, 3);
+int ewendvn(int, const char * EINFO_RESTRICT, ...) EINFO_PRINTF(2, 3);
+int einfov(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
+int ewarnv(const char * EINFO_RESTRICT, ...) EINFO_PRINTF(1, 2);
 /*@}*/
 
 /*! @ingroup ebegin

src/librc/librc-misc.c

@@ -127,7 +127,7 @@ rc_getline(char **line, size_t *len, FILE *fp)
 }
 
 char *
-rc_proc_getent(const char *ent _unused)
+rc_proc_getent(const char *ent RC_UNUSED)
 {
 #ifdef __linux__
 	FILE *fp;
@@ -287,6 +287,7 @@ static RC_STRINGLIST *rc_config_kcl(RC_STRINGLIST *config)
 	overrides = rc_stringlist_new();
 
 	/* A list of variables which may be overridden on the kernel command line */
+	rc_stringlist_add(overrides, "rc_interactive");
 	rc_stringlist_add(overrides, "rc_parallel");
 
 	TAILQ_FOREACH(override, overrides, entries) {

src/librc/librc.c

@@ -249,7 +249,7 @@ detect_prefix(const char *systype)
 }
 
 static const char *
-detect_container(const char *systype _unused)
+detect_container(const char *systype RC_UNUSED)
 {
 #ifdef __FreeBSD__
 	if (systype) {
@@ -313,7 +313,7 @@ detect_container(const char *systype _unused)
 }
 
 static const char *
-detect_vm(const char *systype _unused)
+detect_vm(const char *systype RC_UNUSED)
 {
 #ifdef __NetBSD__
 	if (systype) {

src/openrc-run/openrc-run.c

@@ -107,7 +107,8 @@ static RC_STRINGLIST *deptypes_mwua;	/* need+want+use+after deps for stopping */
 static void
 handle_signal(int sig)
 {
-	int serrno = errno;
+	int serrno = errno, status;
+	pid_t pid;
 	const char *signame = NULL;
 	struct winsize ws;
 
@@ -117,12 +118,13 @@ handle_signal(int sig)
 		break;
 
 	case SIGCHLD:
-		if (signal_pipe[1] > -1) {
-			if (write(signal_pipe[1], &sig, sizeof(sig)) == -1)
-				eerror("%s: send: %s",
-				    service, strerror(errno));
-		} else
-			rc_waitpid(-1);
+		while ((pid = waitpid(-1, &status, WNOHANG)) > 0) {
+			if (signal_pipe[1] > -1 && pid == service_pid) {
+				if (write(signal_pipe[1], &status, sizeof(status)) == -1)
+					eerror("%s: send: %s",
+					    service, strerror(errno));
+			}
+		}
 		break;
 
 	case SIGWINCH:
@@ -438,6 +440,7 @@ svc_exec(const char *arg1, const char *arg2)
 			if (errno != EINTR) {
 				eerror("%s: poll: %s",
 				    service, strerror(errno));
+				ret = -1;
 				break;
 			}
 		}
@@ -448,9 +451,20 @@ svc_exec(const char *arg1, const char *arg2)
 				write_prefix(buffer, bytes, &prefixed);
 			}
 
-			/* Only SIGCHLD signals come down this pipe */
-			if (fd[0].revents & (POLLIN | POLLHUP))
+			/* signal_pipe receives service_pid's exit status */
+			if (fd[0].revents & (POLLIN | POLLHUP)) {
+				if ((s = read(signal_pipe[0], &ret, sizeof(ret))) != sizeof(ret)) {
+					eerror("%s: receive failed: %s", service,
+						s < 0 ? strerror(errno) : "short read");
+					ret = -1;
+					break;
+				}
+				ret = WEXITSTATUS(ret);
+				if (ret != 0 && errno == ECHILD)
+					/* killall5 -9 could cause this */
+					ret = 0;
 				break;
+			}
 		}
 	}
 
@@ -473,11 +487,6 @@ svc_exec(const char *arg1, const char *arg2)
 		master_tty = -1;
 	}
 
-	ret = rc_waitpid(service_pid);
-	ret = WEXITSTATUS(ret);
-	if (ret != 0 && errno == ECHILD)
-		/* killall5 -9 could cause this */
-		ret = 0;
 	service_pid = 0;
 
 	return ret;
@@ -612,7 +621,7 @@ svc_start_check(void)
 	}
 
 	if (exclusive_fd == -1)
-		exclusive_fd = svc_lock(applet);
+		exclusive_fd = svc_lock(applet, !deps);
 	if (exclusive_fd == -1) {
 		if (errno == EACCES)
 			eerrorx("%s: superuser access required", applet);
@@ -864,7 +873,7 @@ svc_stop_check(RC_SERVICE *state)
 		exit(EXIT_FAILURE);
 
 	if (exclusive_fd == -1)
-		exclusive_fd = svc_lock(applet);
+		exclusive_fd = svc_lock(applet, !deps);
 	if (exclusive_fd == -1) {
 		if (errno == EACCES)
 			eerrorx("%s: superuser access required", applet);
@@ -1041,26 +1050,6 @@ svc_stop(void)
 static void
 svc_restart(void)
 {
-	/* This is hairy and a better way needs to be found I think!
-	 * The issue is this - openvpn need net and dns. net can restart
-	 * dns via resolvconf, so you could have openvpn trying to restart
-	 * dnsmasq which in turn is waiting on net which in turn is waiting
-	 * on dnsmasq.
-	 * The work around is for resolvconf to restart its services with
-	 * --nodeps which means just that.
-	 * The downside is that there is a small window when our status is
-	 * invalid.
-	 * One workaround would be to introduce a new status,
-	 * or status locking. */
-	if (!deps) {
-		RC_SERVICE state = rc_service_state(service);
-		if (state & RC_SERVICE_STARTED || state & RC_SERVICE_INACTIVE)
-			svc_exec("stop", "start");
-		else
-			svc_exec("start", NULL);
-		return;
-	}
-
 	if (!(rc_service_state(service) & RC_SERVICE_STOPPED)) {
 		get_started_services();
 		svc_stop();

src/openrc-shutdown/broadcast.c

@@ -42,8 +42,7 @@ static sigjmp_buf jbuf;
 /*
  *	Alarm handler
  */
-/*ARGSUSED*/
-_noreturn static void handler(int arg _unused)
+RC_NORETURN static void handler(int arg RC_UNUSED)
 {
 	siglongjmp(jbuf, 1);
 }

src/openrc-shutdown/openrc-shutdown.c

@@ -170,7 +170,7 @@ static void sleep_no_interrupt(int seconds)
 		duration = remaining;
 }
 
-_noreturn static void stop_shutdown(int sig)
+RC_NORETURN static void stop_shutdown(int sig)
 {
 	(void) sig;
 	unlink(nologin_file);

src/openrc/rc.c

@@ -87,6 +87,7 @@ static RC_HOOK hook_out;
 struct termios *termios_orig = NULL;
 
 RC_PIDLIST service_pids;
+RC_PIDLIST free_these_pids;
 
 static void
 clean_failed(void)
@@ -116,8 +117,7 @@ clean_failed(void)
 static void
 cleanup(void)
 {
-	RC_PID *p1 = LIST_FIRST(&service_pids);
-	RC_PID *p2;
+	RC_PID *p, *tmp;
 
 	if (!rc_in_logger && !rc_in_plugin &&
 	    applet && (strcmp(applet, "rc") == 0 || strcmp(applet, "openrc") == 0))
@@ -139,10 +139,13 @@ cleanup(void)
 		rc_logger_close();
 	}
 
-	while (p1) {
-		p2 = LIST_NEXT(p1, entries);
-		free(p1);
-		p1 = p2;
+	LIST_FOREACH_SAFE(p, &service_pids, entries, tmp) {
+		LIST_REMOVE(p, entries);
+		free(p);
+	}
+	LIST_FOREACH_SAFE(p, &free_these_pids, entries, tmp) {
+		LIST_REMOVE(p, entries);
+		free(p);
 	}
 
 	rc_stringlist_free(main_hotplugged_services);
@@ -344,22 +347,46 @@ static char *get_krunlevel(void)
 static void
 add_pid(pid_t pid)
 {
+	sigset_t sset, old;
 	RC_PID *p = xmalloc(sizeof(*p));
 	p->pid = pid;
+
+	/* this list will be accessed inside the SIGCHLD signal handler.
+	 * so we need to ensure that the SIGCHLD handler doesn't get invoked
+	 * while the list is at an inconsistent state.
+	 */
+	sigemptyset(&sset);
+	sigaddset(&sset, SIGCHLD);
+	sigprocmask(SIG_SETMASK, &sset, &old);
 	LIST_INSERT_HEAD(&service_pids, p, entries);
+	sigprocmask(SIG_SETMASK, &old, NULL);
 }
 
 static void
-remove_pid(pid_t pid)
+remove_pid(pid_t pid, bool inside_signal)
 {
-	RC_PID *p;
+	sigset_t sset, old;
+	RC_PID *p, *tmp;
 
-	LIST_FOREACH(p, &service_pids, entries)
-	    if (p->pid == pid) {
-		    LIST_REMOVE(p, entries);
-		    free(p);
-		    return;
-	    }
+	/* same rationale for blocking SIGCHLD as add_pid() */
+	sigemptyset(&sset);
+	sigaddset(&sset, SIGCHLD);
+	sigprocmask(SIG_SETMASK, &sset, &old);
+	LIST_FOREACH(p, &service_pids, entries) {
+		if (p->pid == pid) {
+			LIST_REMOVE(p, entries);
+			LIST_INSERT_HEAD(&free_these_pids, p, entries);
+			break;
+		}
+	}
+	/* only call free if we're not inside a signal handler */
+	if (!inside_signal) {
+		LIST_FOREACH_SAFE(p, &free_these_pids, entries, tmp) {
+			LIST_REMOVE(p, entries);
+			free(p);
+		}
+	}
+	sigprocmask(SIG_SETMASK, &old, NULL);
 }
 
 static void
@@ -397,7 +424,7 @@ handle_signal(int sig)
 
 		/* Remove that pid from our list */
 		if (pid > 0)
-			remove_pid(pid);
+			remove_pid(pid, true);
 		break;
 
 	case SIGWINCH:
@@ -606,7 +633,7 @@ stop:
 			add_pid(pid);
 			if (!parallel) {
 				rc_waitpid(pid);
-				remove_pid(pid);
+				remove_pid(pid, false);
 			}
 		}
 	}
@@ -672,7 +699,7 @@ do_start_services(const RC_STRINGLIST *start_services, bool parallel)
 			add_pid(pid);
 			if (!parallel) {
 				rc_waitpid(pid);
-				remove_pid(pid);
+				remove_pid(pid, false);
 			}
 		}
 	}
@@ -690,7 +717,7 @@ do_start_services(const RC_STRINGLIST *start_services, bool parallel)
 }
 
 #ifdef RC_DEBUG
-_noreturn static void
+RC_NORETURN static void
 handle_bad_signal(int sig)
 {
 	char pid[10];
@@ -745,6 +772,7 @@ int main(int argc, char **argv)
 
 	applet = basename_c(argv[0]);
 	LIST_INIT(&service_pids);
+	LIST_INIT(&free_these_pids);
 	atexit(cleanup);
 	if (!applet)
 		eerrorx("arguments required");

src/shared/_usage.c

@@ -36,7 +36,7 @@ void set_quiet_options(void)
 	}
 }
 
-_noreturn void show_version(void)
+RC_NORETURN void show_version(void)
 {
 	const char *systype = NULL;
 
@@ -51,7 +51,7 @@ _noreturn void show_version(void)
 	exit(EXIT_SUCCESS);
 }
 
-_noreturn void usage(int exit_status)
+RC_NORETURN void usage(int exit_status)
 {
 	const char * const has_arg[] = { "", "<arg>", "[arg]" };
 	int i;

src/shared/helpers.h

@@ -21,6 +21,7 @@
 #include <stdarg.h>
 #include <stdbool.h>
 #include <stddef.h>
+#include <stdint.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ -28,22 +29,11 @@
 
 #define ERRX fprintf (stderr, "out of memory\n"); exit (1)
 
-#define UNCONST(a)		((void *)(unsigned long)(const void *)(a))
+#define UNCONST(a)		((void *)(uintptr_t)(const void *)(a))
 
-#ifdef lint
-# define _unused
-#endif
-#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
-# define _dead __attribute__((__noreturn__))
-# define _noreturn __attribute__ ((__noreturn__))
-# define _unused __attribute__((__unused__))
-# define _xasprintf(a, b)  __attribute__((__format__(__printf__, a, b)))
-#else
-# define _dead
-# define _noreturn
-# define _unused
-# define _xasprintf(a, b)
-#endif
+#define RC_UNUSED __attribute__((__unused__))
+#define RC_NORETURN __attribute__((__noreturn__))
+#define RC_PRINTF(a, b)  __attribute__((__format__(__printf__, a, b)))
 
 #define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
 
@@ -65,7 +55,7 @@
 	} while (/* CONSTCOND */ 0)
 #endif
 
-_unused static void *xmalloc (size_t size)
+RC_UNUSED static void *xmalloc (size_t size)
 {
 	void *value = malloc(size);
 
@@ -76,7 +66,7 @@ _unused static void *xmalloc (size_t size)
 	/* NOTREACHED */
 }
 
-_unused static void *xrealloc(void *ptr, size_t size)
+RC_UNUSED static void *xrealloc(void *ptr, size_t size)
 {
 	void *value = realloc(ptr, size);
 
@@ -87,7 +77,7 @@ _unused static void *xrealloc(void *ptr, size_t size)
 	/* NOTREACHED */
 }
 
-_unused static char *xstrdup(const char *str)
+RC_UNUSED static char *xstrdup(const char *str)
 {
 	char *value;
 
@@ -109,7 +99,7 @@ _unused static char *xstrdup(const char *str)
  * basename_c never modifies the argument. As such, if there is a trailing
  * slash then an empty string is returned.
  */
-_unused static const char *basename_c(const char *path)
+RC_UNUSED static const char *basename_c(const char *path)
 {
 	const char *slash = strrchr(path, '/');
 
@@ -118,14 +108,14 @@ _unused static const char *basename_c(const char *path)
 	return (path);
 }
 
-_unused static bool exists(const char *pathname)
+RC_UNUSED static bool exists(const char *pathname)
 {
 	struct stat buf;
 
 	return (stat(pathname, &buf) == 0);
 }
 
-_unused static bool existss(const char *pathname)
+RC_UNUSED static bool existss(const char *pathname)
 {
 	struct stat buf;
 
@@ -140,7 +130,7 @@ _unused static bool existss(const char *pathname)
  * functions to handle memory allocation.
  * this function was originally written by Mike Frysinger.
  */
-_unused _xasprintf(2,3) static int xasprintf(char **strp, const char *fmt, ...)
+RC_UNUSED RC_PRINTF(2,3) static int xasprintf(char **strp, const char *fmt, ...)
 {
 	va_list ap;
 	int len;

src/shared/misc.c

@@ -234,7 +234,7 @@ signal_setup_restart(int sig, void (*handler)(int))
 }
 
 int
-svc_lock(const char *applet)
+svc_lock(const char *applet, bool ignore_lock_failure)
 {
 	char *file = NULL;
 	int fd;
@@ -245,6 +245,14 @@ svc_lock(const char *applet)
 	if (fd == -1)
 		return -1;
 	if (flock(fd, LOCK_EX | LOCK_NB) == -1) {
+		if (ignore_lock_failure) {
+			/* Two services with a need b, and b's start()
+			 * calling restart --no-deps on a would cause
+			 * harmless errors: just ignore them.
+			 * See https://github.com/OpenRC/openrc/issues/224
+			 */
+			exit(EXIT_SUCCESS);
+		}
 		eerror("Call to flock failed: %s", strerror(errno));
 		close(fd);
 		return -1;
@@ -274,7 +282,7 @@ exec_service(const char *service, const char *arg)
 	sigset_t old;
 	struct sigaction sa;
 
-	fd = svc_lock(basename_c(service));
+	fd = svc_lock(basename_c(service), false);
 	if (fd == -1)
 		return -1;
 

src/shared/misc.h

@@ -50,7 +50,7 @@ void env_filter(void);
 void env_config(void);
 int signal_setup(int sig, void (*handler)(int));
 int signal_setup_restart(int sig, void (*handler)(int));
-int svc_lock(const char *);
+int svc_lock(const char *, bool);
 int svc_unlock(const char *, int);
 pid_t exec_service(const char *, const char *);
 

src/start-stop-daemon/start-stop-daemon.c

@@ -179,9 +179,9 @@ extern char **environ;
 # define SYS_ioprio_set __NR_ioprio_set
 #endif
 #if !defined(__DragonFly__)
-static inline int ioprio_set(int which _unused,
-			     int who _unused,
-			     int ioprio _unused)
+static inline int ioprio_set(int which RC_UNUSED,
+			     int who RC_UNUSED,
+			     int ioprio RC_UNUSED)
 {
 #ifdef SYS_ioprio_set
 	return syscall(SYS_ioprio_set, which, who, ioprio);

src/supervise-daemon/supervise-daemon.c

@@ -192,8 +192,8 @@ extern char **environ;
 # define SYS_ioprio_set __NR_ioprio_set
 #endif
 #if !defined(__DragonFly__)
-static inline int ioprio_set(int which _unused, int who _unused,
-			     int ioprio _unused)
+static inline int ioprio_set(int which RC_UNUSED, int who RC_UNUSED,
+			     int ioprio RC_UNUSED)
 {
 #ifdef SYS_ioprio_set
 	return syscall(SYS_ioprio_set, which, who, ioprio);
@@ -208,7 +208,7 @@ static void cleanup(void)
 	free(changeuser);
 }
 
-_noreturn static void re_exec_supervisor(void)
+RC_NORETURN static void re_exec_supervisor(void)
 {
 	syslog(LOG_WARNING, "Re-executing for %s", svcname);
 	execlp("supervise-daemon", "supervise-daemon", svcname, "--reexec",
@@ -354,7 +354,7 @@ static pid_t exec_command(const char *cmd)
 	return pid;
 }
 
-_noreturn static void child_process(char *exec, char **argv)
+RC_NORETURN static void child_process(char *exec, char **argv)
 {
 	RC_STRINGLIST *env_list;
 	RC_STRING *env;
@@ -587,7 +587,7 @@ _noreturn static void child_process(char *exec, char **argv)
 	eerrorx("%s: failed to exec `%s': %s", applet, exec,strerror(errno));
 }
 
-_noreturn static void supervisor(char *exec, char **argv)
+RC_NORETURN static void supervisor(char *exec, char **argv)
 {
 	FILE *fp;
 	char buf[2048];