// there should be some checks whether the action actually succeded
int ensure_lagfix_mount_points(const RootInfo *info) {
int bindopts;
bindopts = get_bind_options();
if (strcmp(info->name,"DATA:")==0) {
mount_block("DATA","/dev/block/mmcblk0p2","/dev/block/loop1","/data","/res/odata");
if (bindopts>0) {
ensure_root_path_mounted("DATADATA:");
__system("mkdir -p /dbdata/.data/data");
__system("mkdir -p /data/data");
__system("mount -o bind /dbdata/.data/data /data/data");
}
} else if (strcmp(info->name,"DATADATA:")==0) {
mount_block("DBDATA","/dev/block/stl10","/dev/block/loop2","/dbdata","/res/odbdata");
} else if (strcmp(info->name,"CACHE:")==0) {
mount_block("CACHE","/dev/block/stl11","/dev/block/loop3","/cache","/res/ocache");
} else {
return 1;
}
return 0;
}
/*
* Run /linuxrc, for emulation of old-style initrd
*/
static int run_linuxrc(int argc, char *argv[], dev_t root_dev)
{
int root_fd, old_fd;
pid_t pid;
long realroot = Root_RAM0;
const char *ramdisk_name = "/dev/ram0";
FILE *fp;
dprintf("kinit: mounting initrd\n");
mkdir("/root", 0700);
if (!mount_block(ramdisk_name, "/root", NULL, MS_VERBOSE, NULL))
return -errno;
/* Write the current "real root device" out to procfs */
dprintf("kinit: real_root_dev = %#x\n", root_dev);
fp = fopen("/proc/sys/kernel/real-root-dev", "w");
fprintf(fp, "%u", root_dev);
fclose(fp);
mkdir("/old", 0700);
root_fd = open("/", O_RDONLY|O_DIRECTORY|O_CLOEXEC, 0);
old_fd = open("/old", O_RDONLY|O_DIRECTORY|O_CLOEXEC, 0);
if (root_fd < 0 || old_fd < 0)
return -errno;
if (chdir("/root") ||
mount(".", "/", NULL, MS_MOVE, NULL) || chroot("."))
return -errno;
pid = vfork();
if (pid == 0) {
setsid();
/* Looks like linuxrc doesn't get the init environment
or parameters. Weird, but so is the whole linuxrc bit. */
execl("/linuxrc", "linuxrc", NULL);
_exit(255);
} else if (pid > 0) {
dprintf("kinit: Waiting for linuxrc to complete...\n");
while (waitpid(pid, NULL, 0) != pid)
;
dprintf("kinit: linuxrc done\n");
} else {
return -errno;
}
if (fchdir(old_fd) ||
mount("/", ".", NULL, MS_MOVE, NULL) ||
fchdir(root_fd) || chroot("."))
return -errno;
close(root_fd);
close(old_fd);
getintfile("/proc/sys/kernel/real-root-dev", &realroot);
/* If realroot is Root_RAM0, then the initrd did any necessary work */
if (realroot == Root_RAM0) {
if (mount("/old", "/root", NULL, MS_MOVE, NULL))
return -errno;
} else {
mount_root(argc, argv, (dev_t) realroot, NULL);
/* If /root/initrd exists, move the initrd there, otherwise discard */
if (!mount("/old", "/root/initrd", NULL, MS_MOVE, NULL)) {
/* We're good */
} else {
int olddev = open(ramdisk_name, O_RDWR);
umount2("/old", MNT_DETACH);
if (olddev < 0 ||
ioctl(olddev, BLKFLSBUF, (long)0) ||
close(olddev)) {
fprintf(stderr,
"%s: Cannot flush initrd contents\n",
progname);
}
}
}
rmdir("/old");
return 0;
}
