Do not embed sinit.c - use our git repo

pkgs/sinit

@@ -1,13 +1,21 @@
+url=git://git.2f30.org/sinit
+
 fetch() {
-	cp $top/stuff/sinit.c src
+	[ -d src/sinit ] || git clone $url src/sinit
 }
 
 build() {
-	pushd src
-	x86_64-linux-musl-gcc -o init sinit.c -static || return 1
+	pushd src/sinit
+	make clean
+	make -j$nprocs CC=x86_64-linux-musl-gcc LDFLAGS=-static || return 1
 	popd
 }
 
 install() {
-	cp src/init $root/
+	pushd src/sinit
+	make PREFIX=$root install
+	popd
+	pushd $root/bin
+	ln -sf sinit init
+	popd
 }

stuff/sinit.c

@@ -1,133 +0,0 @@
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <signal.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/select.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#define LEN(x) (sizeof (x) / sizeof *(x))
-
-typedef union {
-        int i;
-        unsigned int ui;
-        float f;
-        const void *v;
-} Arg;
-
-typedef struct {
-        const char *name;
-        void (*func)(const Arg *arg);
-        const Arg arg;
-} Command;
-
-static void cmdpoweroff(const Arg *);
-static void cmdreboot(const Arg *);
-static void dispatchcmd(int);
-static int spawn(const char *, char *const []);
-
-static const char *fifopath = "/var/run/sinit.fifo";
-static Command commands[] = {
-	{ "poweroff",   cmdpoweroff,   {0} },
-	{ "reboot",     cmdreboot,     {0} },
-};
-
-int
-main(void)
-{
-	sigset_t set;
-	pid_t pid;
-	fd_set rfds;
-	int c, fd, n;
-
-	if (getpid() != 1)
-		return EXIT_FAILURE;
-
-	sigfillset(&set);
-	sigprocmask(SIG_BLOCK, &set, 0);
-
-	pid = fork();
-	if (pid < 0)
-		return EXIT_FAILURE;
-	if (pid > 0)
-		for (;;)
-			wait(&c);
-
-	sigprocmask(SIG_UNBLOCK, &set, 0);
-
-	spawn("/bin/rc", (char *[]){ "rc", NULL });
-
-	unlink(fifopath);
-	umask(0);
-	mkfifo(fifopath, 0600);
-
-	fd = open(fifopath, O_RDWR | O_NONBLOCK);
-	if (fd >= 0) {
-		while (1) {
-			FD_ZERO(&rfds);
-			FD_SET(fd, &rfds);
-			n = select(fd + 1, &rfds, NULL, NULL, NULL);
-			if (n <= 0)
-				continue;
-			if (FD_ISSET(fd, &rfds))
-				dispatchcmd(fd);
-		}
-	}
-
-	/* can't reach */
-	return EXIT_SUCCESS;
-}
-
-static void
-cmdpoweroff(const Arg *arg)
-{
-	spawn("/bin/rc.shutdown", (char *[]) { "rc", "poweroff", NULL });
-}
-
-static void
-cmdreboot(const Arg *arg)
-{
-	spawn("/bin/rc.shutdown", (char *[]) { "rc", "reboot", NULL });
-}
-
-static void
-dispatchcmd(int fd)
-{
-	int i;
-	char buf[BUFSIZ], *p;
-	ssize_t n;
-
-	n = read(fd, buf, sizeof(buf) - 1);
-	if (n <= 0)
-		return;
-	buf[n] = '\0';
-	p = strchr(buf, '\n');
-	if (p)
-		*p = '\0';
-	for (i = 0; i < LEN(commands); i++) {
-		if (strcmp(commands[i].name, buf) == 0) {
-			commands[i].func(&commands[i].arg);
-			break;
-		}
-	}
-}
-
-static int
-spawn(const char *file, char *const argv[])
-{
-	pid_t pid;
-
-	pid = fork();
-	if (pid < 0)
-		return -1;
-	if (pid == 0) {
-		setsid();
-		setpgid(0, 0);
-		execvp(file, argv);
-		_exit(errno == ENOENT ? 127 : 126);
-	}
-}