migrate fully to meson build system

- drop old build system
- move shared include and source files to common directory
- drop "rc-" prefix from shared include and source files
- move executable-specific code to individual directories under src
- adjust top-level .gitignore file for new build system

This closes #489.

1 files changed, 0 insertions, 333 deletions

diff --git a/src/rc/openrc-init.c b/src/rc/openrc-init.c
deleted file mode 100644
index 5bc53434..00000000
--- a/src/rc/openrc-init.c
+++ /dev/null
@@ -1,333 +0,0 @@
-/*
- * openrc-init.c
- * This is the init process (pid 1) for OpenRC.
- *
- * This is based on code written by James Hammons <jlhamm@acm.org>, so
- * I would like to publically thank him for his work.
- */
-
-/*
- * Copyright (c) 2017 The OpenRC Authors.
- * See the Authors file at the top-level directory of this distribution and
- * https://github.com/OpenRC/openrc/blob/HEAD/AUTHORS
- *
- * This file is part of OpenRC. It is subject to the license terms in
- * the LICENSE file found in the top-level directory of this
- * distribution and at https://github.com/OpenRC/openrc/blob/HEAD/LICENSE
- * This file may not be copied, modified, propagated, or distributed
- *    except according to the terms contained in the LICENSE file.
- */
-
-#include <errno.h>
-#include <pwd.h>
-#include <signal.h>
-#include <stdbool.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/reboot.h>
-#include <sys/wait.h>
-
-#ifdef HAVE_SELINUX
-#  include <selinux/selinux.h>
-#endif
-
-#include "helpers.h"
-#include "rc.h"
-#include "rc-plugin.h"
-#include "rc-wtmp.h"
-#include "version.h"
-
-static const char *path_default = "/sbin:/usr/sbin:/bin:/usr/bin";
-static const char *rc_default_runlevel = "default";
-
-static void do_openrc(const char *runlevel)
-{
-	pid_t pid;
-	sigset_t all_signals;
-	sigset_t our_signals;
-
-	sigfillset(&all_signals);
-	/* block all signals */
-	sigprocmask(SIG_BLOCK, &all_signals, &our_signals);
-	pid = fork();
-	switch (pid) {
-		case -1:
-			perror("fork");
-			exit(1);
-			break;
-		case 0:
-			setsid();
-			/* unblock all signals */
-			sigprocmask(SIG_UNBLOCK, &all_signals, NULL);
-			printf("Starting %s runlevel\n", runlevel);
-			execlp("openrc", "openrc", runlevel, NULL);
-			perror("exec");
-			exit(1);
-			break;
-		default:
-			/* restore our signal mask */
-			sigprocmask(SIG_SETMASK, &our_signals, NULL);
-			while (waitpid(pid, NULL, 0) != pid)
-				if (errno == ECHILD)
-					break;
-			break;
-	}
-}
-
-static void init(const char *default_runlevel)
-{
-	const char *runlevel = NULL;
-	do_openrc("sysinit");
-	do_openrc("boot");
-	if (default_runlevel)
-		runlevel = default_runlevel;
-	else
-		runlevel = rc_conf_value("rc_default_runlevel");
-	if (!runlevel)
-		runlevel = rc_default_runlevel;
-	if (!rc_runlevel_exists(runlevel)) {
-		printf("%s is an invalid runlevel\n", runlevel);
-		runlevel = rc_default_runlevel;
-	}
-	do_openrc(runlevel);
-	log_wtmp("reboot", "~~", 0, RUN_LVL, "~~");
-}
-
-static void handle_reexec(char *my_name)
-{
-	execlp(my_name, my_name, "reexec", NULL);
-	return;
-}
-
-static void handle_shutdown(const char *runlevel, int cmd)
-{
-	struct timespec ts;
-
-	do_openrc(runlevel);
-	printf("Sending the final term signal\n");
-	kill(-1, SIGTERM);
-	ts.tv_sec = 3;
-	ts.tv_nsec = 0;
-	nanosleep(&ts, NULL);
-	printf("Sending the final kill signal\n");
-	kill(-1, SIGKILL);
-	sync();
-	reboot(cmd);
-}
-
-static void run_program(const char *prog)
-{
-	sigset_t full;
-	sigset_t old;
-	pid_t pid;
-
-	/* We need to block signals until we have forked */
-	sigfillset(&full);
-	sigprocmask(SIG_SETMASK, &full, &old);
-	pid = fork();
-	if (pid == -1) {
-		perror("init");
-		return;
-	}
-	if (pid == 0) {
-		/* Unmask signals */
-		sigprocmask(SIG_SETMASK, &old, NULL);
-		execl(prog, prog, (char *)NULL);
-		perror("init");
-		exit(1);
-	}
-	/* Unmask signals and wait for child */
-	sigprocmask(SIG_SETMASK, &old, NULL);
-	if (rc_waitpid(pid) == -1)
-		perror("init");
-}
-
-static void open_shell(void)
-{
-	const char *shell;
-	struct passwd *pw;
-
-#ifdef __linux__
-	const char *sys = rc_sys();
-
-	/* VSERVER systems cannot really drop to shells */
-	if (sys && strcmp(sys, RC_SYS_VSERVER) == 0)
-	{
-		execlp("halt", "halt", "-f", (char *) NULL);
-		perror("init");
-		return;
-	}
-#endif
-
-	shell = rc_conf_value("rc_shell");
-	/* No shell set, so obey env, then passwd, then default to /bin/sh */
-	if (!shell) {
-		shell = getenv("SHELL");
-		if (!shell) {
-			pw = getpwuid(getuid());
-			if (pw)
-				shell = pw->pw_shell;
-			if (!shell)
-				shell = "/bin/sh";
-		}
-	}
-	run_program(shell);
-}
-
-static void handle_single(void)
-{
-	do_openrc("single");
-}
-
-static void reap_zombies(void)
-{
-	pid_t pid;
-
-	for (;;) {
-		pid = waitpid(-1, NULL, WNOHANG);
-		if (pid == 0)
-			break;
-		else if (pid == -1) {
-			if (errno == ECHILD)
-				break;
-			perror("waitpid");
-			continue;
-		}
-	}
-}
-
-static void signal_handler(int sig)
-{
-	switch (sig) {
-		case SIGINT:
-			handle_shutdown("reboot", RB_AUTOBOOT);
-			break;
-		case SIGTERM:
-#ifdef SIGPWR
-		case SIGPWR:
-#endif
-			handle_shutdown("shutdown", RB_HALT_SYSTEM);
-			break;
-		case SIGCHLD:
-			reap_zombies();
-			break;
-		default:
-			printf("Unknown signal received, %d\n", sig);
-			break;
-	}
-}
-
-int main(int argc, char **argv)
-{
-	char *default_runlevel;
-	char buf[2048];
-	int count;
-	FILE *fifo;
-	bool reexec = false;
-	sigset_t signals;
-	struct sigaction sa;
-#ifdef HAVE_SELINUX
-	int			enforce = 0;
-#endif
-
-	if (getpid() != 1)
-		return 1;
-
-#ifdef HAVE_SELINUX
-	if (getenv("SELINUX_INIT") == NULL) {
-		if (is_selinux_enabled() != 1) {
-			if (selinux_init_load_policy(&enforce) == 0) {
-				putenv("SELINUX_INIT=YES");
-				execv(argv[0], argv);
-			} else {
-				if (enforce > 0) {
-					/*
-					 * SELinux in enforcing mode but load_policy failed
-					 * At this point, we probably can't open /dev/console,
-					 * so log() won't work
-					 */
-					fprintf(stderr,"Unable to load SELinux Policy.\n");
-					fprintf(stderr,"Machine is  in enforcing mode.\n");
-					fprintf(stderr,"Halting now.\n");
-					exit(1);
-				}
-			}
-		}
-	}
-#endif
-
-	printf("OpenRC init version %s starting\n", VERSION);
-
-	if (argc > 1)
-		default_runlevel = argv[1];
-	else
-		default_runlevel = NULL;
-
-	if (default_runlevel && strcmp(default_runlevel, "reexec") == 0)
-		reexec = true;
-
-	/* block all signals we do not handle */
-	sigfillset(&signals);
-	sigdelset(&signals, SIGCHLD);
-	sigdelset(&signals, SIGINT);
-	sigdelset(&signals, SIGTERM);
-#ifdef SIGPWR
-	sigdelset(&signals, SIGPWR);
-#endif
-	sigprocmask(SIG_SETMASK, &signals, NULL);
-
-	/* install signal  handler */
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_handler = signal_handler;
-	sigaction(SIGCHLD, &sa, NULL);
-	sigaction(SIGINT, &sa, NULL);
-	sigaction(SIGTERM, &sa, NULL);
-#ifdef SIGPWR
-	sigaction(SIGPWR, &sa, NULL);
-#endif
-	reboot(RB_DISABLE_CAD);
-
-	/* set default path */
-	setenv("PATH", path_default, 1);
-
-	if (!reexec)
-		init(default_runlevel);
-
-	if (mkfifo(RC_INIT_FIFO, 0600) == -1 && errno != EEXIST)
-		perror("mkfifo");
-
-	for (;;) {
-		/* This will block until a command is sent down the pipe... */
-		fifo = fopen(RC_INIT_FIFO, "r");
-		if (!fifo) {
-			if (errno != EINTR)
-				perror("fopen");
-			continue;
-		}
-		count = fread(buf, 1, sizeof(buf) - 1, fifo);
-		buf[count] = 0;
-		fclose(fifo);
-		printf("PID1: Received \"%s\" from FIFO...\n", buf);
-		if (strcmp(buf, "halt") == 0)
-			handle_shutdown("shutdown", RB_HALT_SYSTEM);
-		else if (strcmp(buf, "kexec") == 0)
-			handle_shutdown("reboot", RB_KEXEC);
-		else if (strcmp(buf, "poweroff") == 0)
-			handle_shutdown("shutdown", RB_POWER_OFF);
-		else if (strcmp(buf, "reboot") == 0)
-			handle_shutdown("reboot", RB_AUTOBOOT);
-		else if (strcmp(buf, "reexec") == 0)
-			handle_reexec(argv[0]);
-		else if (strcmp(buf, "single") == 0) {
-			handle_single();
-			open_shell();
-			init(default_runlevel);
-		}
-	}
-	return 0;
-}