diff options
Diffstat (limited to 'sys-apps/busybox/files/ginit.c')
-rw-r--r-- | sys-apps/busybox/files/ginit.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/sys-apps/busybox/files/ginit.c b/sys-apps/busybox/files/ginit.c deleted file mode 100644 index de98e4ac..00000000 --- a/sys-apps/busybox/files/ginit.c +++ /dev/null @@ -1,124 +0,0 @@ -/* - * simple init to bootstrap sep-/usr - * - * Copyright (C) 2012-2013 Mike Frysinger <vapier@gentoo.org> - * - * Licensed under GPLv2 or later - */ - -//applet:IF_GINIT(APPLET(ginit, BB_DIR_SBIN, BB_SUID_DROP)) - -//kbuild:lib-$(CONFIG_GINIT) += ginit.o - -//config:config GINIT -//config: bool "ginit" -//config: default y -//config: select MKDIR -//config: select MDEV -//config: select MOUNT -//config: select MOUNTPOINT -//config: help -//config: sep-/usr bootstrapper - -//usage:#define ginit_trivial_usage NOUSAGE_STR -//usage:#define ginit_full_usage "" - -#include "libbb.h" - -#define eprintf(fmt, args...) printf("%s" fmt, "sep-usr init: ", ## args) - -static void process_args(char **args) -{ - size_t i; - - eprintf("running: "); - for (i = 0; args[i]; ++i) { - /* String needs to be writable, so dupe it */ - args[i] = xstrdup(args[i]); - printf("'%s' ", args[i]); - } - printf("\n"); -} - -int ginit_main(int argc UNUSED_PARAM, char **argv) MAIN_EXTERNALLY_VISIBLE; -int ginit_main(int argc UNUSED_PARAM, char **argv) -{ - FILE *mntlist; - bool ismnted_dev, ismnted_sys, ismnted_usr; - struct mntent *mntent; - - /* - int fd = open("/dev/console", O_RDWR); - if (fd >= 0) { - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - } - */ - - /* If given an argv[] with an applet name, run it instead. - * Makes recovering simple by doing: init=/ginit bb - */ - if (argv[1] && argv[1][0] != '/') { - eprintf("running user requested applet %s\n", argv[1]); - return spawn_and_wait(argv+1); - } - -#define saw(argv...) \ - ({ \ - static const char *args[] = { argv, NULL }; \ - /* These casts are fine -- see process_args for mem setup */ \ - process_args((void *)args); \ - spawn_and_wait((void *)args); \ - }) - - /* First setup basic /dev */ - if (saw("mountpoint", "-q", "/dev") != 0) { - /* Try /etc/fstab */ - if (saw("mount", "-n", "/dev")) - /* Then devtmpfs */ - if (saw("mount", "-n", "-t", "devtmpfs", "devtmpfs", "/dev")) - /* Finally normal tmpfs */ - saw("mount", "-n", "-t", "tmpfs", "dev", "/dev"); - } else { - eprintf("%s appears to be mounted; skipping its setup\n", "/dev"); - } - - /* If /dev is empty (e.g. tmpfs), run mdev to seed things */ - if (access("/dev/console", F_OK) != 0) { - if (saw("mountpoint", "-q", "/sys") != 0) { - if (saw("mount", "-n", "/sys")) - saw("mount", "-n", "-t", "sysfs", "sysfs", "/sys"); - } else { - eprintf("%s appears to be mounted; skipping its setup\n", "/sys"); - } - - /* Mount /proc as mdev will fork+exec /proc/self/exe */ - if (saw("mountpoint", "-q", "/proc") != 0) { - /* Try /etc/fstab */ - if (saw("mount", "-n", "/proc")) - saw("mount", "-n", "-t", "proc", "proc", "/proc"); - } - - saw("mdev", "-s"); - } - - /* Then seed the stuff we care about */ - saw("mkdir", "-p", "/dev/pts", "/dev/shm"); - - /* Then mount /usr */ - if (saw("mountpoint", "-q", "/usr") != 0) { - saw("mount", "-n", "/usr", "-o", "ro"); - } else { - eprintf("%s appears to be mounted; skipping its setup\n", "/usr"); - } - - /* Now that we're all done, exec the real init */ - if (!argv[1]) { - argv[0] = (void *)"/sbin/init"; - argv[1] = NULL; - } else - ++argv; - process_args(argv); - return execv(argv[0], argv); -} |