blob: 1f9cd048a938fb46a14e77efe31c88c08a799385 [file] [log] [blame]
/*
* This is a simple init for shared rootfs guests. This part should be limited
* to doing mounts and running stage 2 of the init process.
*/
#include <sys/mount.h>
#include <string.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <sys/stat.h>
#include <sys/wait.h>
#include <sys/reboot.h>
static int run_process(char *filename)
{
char *new_argv[] = { filename, NULL };
char *new_env[] = { "TERM=linux", "DISPLAY=192.168.33.1:0",
"HOME=/virt/home", NULL };
return execve(filename, new_argv, new_env);
}
static int run_process_sandbox(char *filename)
{
char *new_argv[] = { filename, "/virt/sandbox.sh", NULL };
char *new_env[] = { "TERM=linux", "HOME=/virt/home", NULL };
return execve(filename, new_argv, new_env);
}
static void do_mounts(void)
{
#ifndef CONFIG_GUEST_PRE_INIT
mount("hostfs", "/host", "9p", MS_RDONLY, "trans=virtio,version=9p2000.L");
#endif
mount("sysfs", "/sys", "sysfs", 0, NULL);
mount("proc", "/proc", "proc", 0, NULL);
mount("devtmpfs", "/dev", "devtmpfs", 0, NULL);
mkdir("/dev/pts", 0755);
mount("devpts", "/dev/pts", "devpts", 0, NULL);
}
int main(int argc, char *argv[])
{
pid_t child;
int status;
puts("Mounting...");
do_mounts();
/* get session leader */
setsid();
/* set controlling terminal */
ioctl(0, TIOCSCTTY, 1);
child = fork();
if (child < 0) {
printf("Fatal: fork() failed with %d\n", child);
return 0;
} else if (child == 0) {
if (access("/virt/sandbox.sh", R_OK) == 0)
run_process_sandbox("/bin/sh");
else
run_process("/bin/sh");
} else {
pid_t corpse;
do {
corpse = waitpid(-1, &status, 0);
} while (corpse != child);
}
reboot(RB_AUTOBOOT);
printf("Init failed: %s\n", strerror(errno));
return 0;
}