diff options
Diffstat (limited to 'mdk-stage1/stage1.c')
| -rw-r--r-- | mdk-stage1/stage1.c | 673 |
1 files changed, 0 insertions, 673 deletions
diff --git a/mdk-stage1/stage1.c b/mdk-stage1/stage1.c deleted file mode 100644 index e1efc6348..000000000 --- a/mdk-stage1/stage1.c +++ /dev/null @@ -1,673 +0,0 @@ -/* - * Guillaume Cottenceau (gc@mandrakesoft.com) - * - * Copyright 2000-2001 MandrakeSoft - * - * View the homepage: http://people.mandrakesoft.com/~gc/html/stage1.html - * - * - * This software may be freely redistributed under the terms of the GNU - * public license. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. - * - */ - -/* - * Portions from Erik Troan (ewt@redhat.com) - * - * Copyright 1996 Red Hat Software - * - */ - -#include <stdlib.h> -#include <unistd.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/mount.h> -#include <string.h> -#include <errno.h> -#include <ctype.h> -#include <stdarg.h> -#include <signal.h> -#include <linux/unistd.h> -_syscall2(int,pivot_root,const char *,new_root,const char *,put_old) - -#include "stage1.h" - -#include "log.h" -#include "probing.h" -#include "frontend.h" -#include "modules.h" -#include "tools.h" -#include "automatic.h" -#include "mount.h" -#include "lomount.h" -#include "insmod.h" - -#ifdef ENABLE_PCMCIA -#include "pcmcia_/pcmcia.h" -#endif - -#ifndef DISABLE_CDROM -#include "cdrom.h" -#endif - -#ifndef DISABLE_NETWORK -#include "network.h" -#endif - -#ifndef DISABLE_DISK -#include "disk.h" -#endif - - -/************************************************************ - * globals */ - -char * method_name; -char * stage2_kickstart = NULL; - - -void fatal_error(char *msg) -{ - printf("FATAL ERROR IN STAGE1: %s\n\nI can't recover from this.\nYou may reboot your system.\n", msg); - while (1); -} - - -/************************************************************ - * special frontend functs - * (the principle is to not pollute frontend code with stage1-specific stuff) */ - -void stg1_error_message(char *msg, ...) -{ - va_list args; - va_start(args, msg); - log_message("unsetting automatic"); - unset_param(MODE_AUTOMATIC); - verror_message(msg, args); - va_end(args); -} - -void stg1_info_message(char *msg, ...) -{ - va_list args; - va_start(args, msg); - if (IS_AUTOMATIC) { - vlog_message(msg, args); - return; - } - vinfo_message(msg, args); - va_end(args); -} - - -#ifdef SPAWN_SHELL -static pid_t shell_pid = 0; - -/************************************************************ - * spawns a shell on console #2 */ -static void spawn_shell(void) -{ - int fd; - char * shell_name[] = { "/tmp/sh", NULL }; - - log_message("spawning a shell"); - - if (!IS_TESTING) { - fd = open("/dev/tty2", O_RDWR); - if (fd == -1) { - log_message("cannot open /dev/tty2 -- no shell will be provided"); - return; - } - else if (access(shell_name[0], X_OK)) { - log_message("cannot open shell - %s doesn't exist", shell_name[0]); - return; - } - - if (!(shell_pid = fork())) { - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - - close(fd); - setsid(); - if (ioctl(0, TIOCSCTTY, NULL)) - log_perror("could not set new controlling tty"); - - execve(shell_name[0], shell_name, grab_env()); - log_message("execve of %s failed: %s", shell_name[0], strerror(errno)); - exit(-1); - } - - close(fd); - } -} -#endif - - -char * interactive_fifo = "/tmp/stage1-fifo"; -static pid_t interactive_pid = 0; - -/* spawns my small interactive on console #6 */ -static void spawn_interactive(void) -{ -#ifdef SPAWN_INTERACTIVE - int fd; - char * dev = "/dev/tty6"; - - printf("spawning my interactive on %s\n", dev); - - if (!IS_TESTING) { - fd = open(dev, O_RDWR); - if (fd == -1) { - printf("cannot open %s -- no interactive\n", dev); - return; - } - - if (mkfifo(interactive_fifo, O_RDWR)) { - printf("cannot create fifo -- no interactive\n"); - return; - } - - if (!(interactive_pid = fork())) { - int fif_out; - - dup2(fd, 0); - dup2(fd, 1); - dup2(fd, 2); - - close(fd); - setsid(); - if (ioctl(0, TIOCSCTTY, NULL)) - perror("could not set new controlling tty"); - - fif_out = open(interactive_fifo, O_WRONLY); - printf("Please enter your command (availables: [+,-] [rescue,expert]).\n"); - - while (1) { - char s[50]; - int i = 0; - printf("? "); - fflush(stdout); - read(0, &(s[i++]), 1); - fcntl(0, F_SETFL, O_NONBLOCK); - while (read(0, &(s[i++]), 1) > 0 && i < sizeof(s)); - fcntl(0, F_SETFL, 0); - write(fif_out, s, i-2); - printf("Ok.\n"); - } - } - - close(fd); - } -#endif -} - - -/************************************************************ - */ - -static void expert_third_party_modules(void) -{ - enum return_type results; - char * floppy_mount_location = "/tmp/floppy"; - char ** modules; - char final_name[500]; - char * choice; - int rc; - char * questions[] = { "Options", NULL }; - static char ** answers = NULL; - - results = ask_yes_no("If you want to insert third-party kernel modules, insert " - "a Linux (ext2fs) formatted floppy containing the modules and confirm. Otherwise, select \"no\".");; - if (results != RETURN_OK) - return; - - if (my_mount(floppy_device(), floppy_mount_location, "ext2", 0) == -1) { - stg1_error_message("I can't find a Linux ext2 floppy in first floppy drive."); - return expert_third_party_modules(); - } - - modules = list_directory(floppy_mount_location); - - if (!modules || !*modules) { - stg1_error_message("No modules found on floppy disk."); - umount(floppy_mount_location); - return expert_third_party_modules(); - } - - results = ask_from_list("Which driver would you like to insmod?", modules, &choice); - if (results != RETURN_OK) { - umount(floppy_mount_location); - return; - } - - sprintf(final_name, "%s/%s", floppy_mount_location, choice); - - results = ask_from_entries("Please enter the options:", questions, &answers, 24, NULL); - if (results != RETURN_OK) { - umount(floppy_mount_location); - return expert_third_party_modules(); - } - - rc = insmod_local_file(final_name, answers[0]); - umount(floppy_mount_location); - - if (rc) { - log_message("\tfailed"); - stg1_error_message("Insmod failed."); - } - - return expert_third_party_modules(); -} - - -#ifdef ENABLE_PCMCIA -static void handle_pcmcia(char ** pcmcia_adapter) -{ - if (kernel_version() == 2) { - stg1_error_message("We now use kernel pcmcia support and this won't work with a 2.2 kernel."); - return; - } - - *pcmcia_adapter = pcmcia_probe(); - if (!*pcmcia_adapter) { - log_message("no pcmcia adapter found"); - return; - } - my_insmod("pcmcia_core", ANY_DRIVER_TYPE, NULL, 0); - my_insmod(*pcmcia_adapter, ANY_DRIVER_TYPE, NULL, 0); - my_insmod("ds", ANY_DRIVER_TYPE, NULL, 0); - - /* call to cardmgr takes time, let's use the wait message */ - wait_message("Enabling PCMCIA extension cards..."); - log_message("cardmgr rc: %d", cardmgr_call()); - remove_wait_message(); - - if (IS_EXPERT) - expert_third_party_modules(); -} -#endif - - -/************************************************************ - */ - -static void method_select_and_prepare(void) -{ - enum return_type results; - char * choice; - char * means[10], * means_auto[10]; - int i; - -#ifndef DISABLE_DISK - char * disk_install = "Hard disk"; char * disk_install_auto = "disk"; -#endif -#ifndef DISABLE_CDROM - char * cdrom_install = "CDROM drive"; char * cdrom_install_auto = "cdrom"; -#endif -#ifndef DISABLE_NETWORK - char * network_nfs_install = "NFS server"; char * network_nfs_install_auto = "nfs"; - char * network_ftp_install = "FTP server"; char * network_ftp_install_auto = "ftp"; - char * network_http_install = "HTTP server"; char * network_http_install_auto = "http"; -#endif - - i = 0; -#ifndef DISABLE_NETWORK - means[i] = network_nfs_install; means_auto[i++] = network_nfs_install_auto; - means[i] = network_ftp_install; means_auto[i++] = network_ftp_install_auto; - means[i] = network_http_install; means_auto[i++] = network_http_install_auto; -#endif -#ifndef DISABLE_CDROM - means[i] = cdrom_install; means_auto[i++] = cdrom_install_auto; - allow_additional_modules_floppy = 0; -#endif -#ifndef DISABLE_DISK - means[i] = disk_install; means_auto[i++] = disk_install_auto; - allow_additional_modules_floppy = 0; -#endif - means[i] = NULL; - - results = ask_from_list_auto("Please choose the installation method.", means, &choice, "method", means_auto); - - if (results != RETURN_OK) - return method_select_and_prepare(); - -#ifndef DISABLE_CDROM - if (!strcmp(choice, cdrom_install)) - results = cdrom_prepare(); -#endif - -#ifndef DISABLE_DISK - if (!strcmp(choice, disk_install)) - results = disk_prepare(); -#endif - -#ifndef DISABLE_NETWORK - if (!strcmp(choice, network_nfs_install)) - results = nfs_prepare(); - - if (!strcmp(choice, network_ftp_install)) - results = ftp_prepare(); - - if (!strcmp(choice, network_http_install)) - results = http_prepare(); -#endif - - if (results != RETURN_OK) - return method_select_and_prepare(); -} - -#ifdef MANDRAKE_MOVE -int mandrake_move_pre(void) -{ - log_message("move: creating %s directory and mounting as tmpfs", SLASH_LOCATION); - - if (scall(mkdir(SLASH_LOCATION, 0755), "mkdir")) - return RETURN_ERROR; - - if (scall(mount("none", SLASH_LOCATION, "tmpfs", MS_MGC_VAL, NULL), "mount tmpfs")) - return RETURN_ERROR; - - return RETURN_OK; -} - - -static enum return_type handle_clp(char* clp, char* live, char* location_live, char* location_mount, int* is_symlink, char* clp_tmpfs) -{ - static int count = 0; - if (access(clp, R_OK)) { - log_message("no %s found (or disabled), trying to fallback on plain tree", clp); - if (!access(live, R_OK)) { - if (scall(symlink(location_live, location_mount), "symlink")) - return RETURN_ERROR; - *is_symlink = 1; - return RETURN_OK; - } else { - log_message("move: can't find %s nor %s, proceeding hoping files will be there", clp, live); - return RETURN_OK; - } - } - - if (clp_tmpfs) { - int ret; - char buf[5000]; - sprintf(buf, "Loading (part %d)...", ++count); - init_progression(buf, file_size(clp)); - ret = copy_file(clp, clp_tmpfs, update_progression); - end_progression(); - if (ret != RETURN_OK) - return ret; - clp = clp_tmpfs; - } - - if (lomount(clp, location_mount, NULL, 1)) { - stg1_error_message("Could not mount compressed loopback :(."); - return RETURN_ERROR; - } - - return RETURN_OK; -} - -int mandrake_move_post(void) -{ - FILE *f; - char buf[5000]; - int fd; - char rootdev[] = "0x0100"; - int boot__real_is_symlink_to_raw = 0; - int always__real_is_symlink_to_raw = 0; - int totem__real_is_symlink_to_raw = 0; - int main__real_is_symlink_to_raw = 0; - - if (handle_clp(IMAGE_LOCATION "/live_tree_boot.clp", IMAGE_LOCATION "/live_tree_boot/usr/bin/runstage2.pl", - IMAGE_LOCATION "/live_tree_boot", BOOT_LOCATION, - &boot__real_is_symlink_to_raw, SLASH_LOCATION "/live_tree_boot.clp") != RETURN_OK) - return RETURN_ERROR; - - if (handle_clp(IMAGE_LOCATION "/live_tree_always.clp", IMAGE_LOCATION "/live_tree_always/bin/bash", - IMAGE_LOCATION "/live_tree_always", ALWAYS_LOCATION, - &always__real_is_symlink_to_raw, SLASH_LOCATION "/live_tree_always.clp") != RETURN_OK) - return RETURN_ERROR; - - if (handle_clp(IMAGE_LOCATION "/live_tree_totem.clp", IMAGE_LOCATION "/live_tree_totem/usr/bin/totem", - IMAGE_LOCATION "/live_tree_totem", TOTEM_LOCATION, - &totem__real_is_symlink_to_raw, SLASH_LOCATION "/live_tree_totem.clp") != RETURN_OK) - return RETURN_ERROR; - - if (handle_clp(IMAGE_LOCATION "/live_tree.clp", IMAGE_LOCATION "/live_tree/etc/fstab", - IMAGE_LOCATION "/live_tree", IMAGE_LOCATION_REAL, - &main__real_is_symlink_to_raw, NULL) != RETURN_OK) - return RETURN_ERROR; - - if (scall(!(f = fopen(IMAGE_LOCATION_REAL "/move/symlinks", "rb")), "fopen[" IMAGE_LOCATION_REAL "/move/symlinks]")) - return RETURN_ERROR; - while (fgets(buf, sizeof(buf), f)) { - char oldpath[500], newpath[500]; - buf[strlen(buf)-1] = '\0'; // trim \n - sprintf(oldpath, "%s%s", LIVE_LOCATION_REL, buf); - sprintf(newpath, "%s%s", SLASH_LOCATION, buf); - log_message("move: creating symlink %s -> %s", oldpath, newpath); - if (scall(symlink(oldpath, newpath), "symlink")) - return RETURN_ERROR; - } - fclose(f); - - // in case we didn't mount any clp, because gzloop.o is not available later in /lib/modules - my_insmod("gzloop", ANY_DRIVER_TYPE, NULL, 0); - - // hardcoded :( - if (!access(TOTEM_LOCATION, R_OK)) { - if (scall(symlink("/image_totem/usr", SLASH_LOCATION "/usr"), "symlink")) - return RETURN_ERROR; - } else - // need a fallback in case we don't use image_totem.clp nor live_tree_totem, but we're in -u mode - if (scall(symlink(LIVE_LOCATION_REL "/usr", SLASH_LOCATION "/usr"), "symlink")) - return RETURN_ERROR; - - // need to create the few devices needed to start up stage2 in a decent manner, we can't symlink or they will keep CD busy - // we need only the ones before mounting /dev as devfs - if (scall(mkdir(SLASH_LOCATION "/dev", 0755), "mkdir")) - return RETURN_ERROR; - if (scall(!(f = fopen(IMAGE_LOCATION_REAL "/move/devices", "rb")), "fopen")) - return RETURN_ERROR; - while (fgets(buf, sizeof(buf), f)) { - char name[500], path[500], type; - int major, minor; - sscanf(buf, "%s %c %d %d", name, &type, &major, &minor); - sprintf(path, "%s%s", SLASH_LOCATION, name); - log_message("move: creating device %s %c %d %d", path, type, major, minor); - if (scall(mknod(path, type == 'c' ? S_IFCHR : S_IFBLK, makedev(major, minor)), "mknod")) - return RETURN_ERROR; - } - fclose(f); - - if (boot__real_is_symlink_to_raw) { - if (scall(unlink(BOOT_LOCATION), "unlink")) - return RETURN_ERROR; - if (scall(symlink(RAW_LOCATION_REL "/live_tree_boot", BOOT_LOCATION), "symlink")) - return RETURN_ERROR; - } - - if (always__real_is_symlink_to_raw) { - if (scall(unlink(ALWAYS_LOCATION), "unlink")) - return RETURN_ERROR; - if (scall(symlink(RAW_LOCATION_REL "/live_tree_always", ALWAYS_LOCATION), "symlink")) - return RETURN_ERROR; - } - - if (totem__real_is_symlink_to_raw) { - if (scall(unlink(TOTEM_LOCATION), "unlink")) - return RETURN_ERROR; - if (scall(symlink(RAW_LOCATION_REL "/live_tree_totem", TOTEM_LOCATION), "symlink")) - return RETURN_ERROR; - } - - if (main__real_is_symlink_to_raw) { - if (scall(unlink(IMAGE_LOCATION_REAL), "unlink")) - return RETURN_ERROR; - if (scall(symlink(RAW_LOCATION_REL "/live_tree", IMAGE_LOCATION_REAL), "symlink")) - return RETURN_ERROR; - } - - mkdir(SLASH_LOCATION "/etc", 0755); - copy_file("/etc/resolv.conf", SLASH_LOCATION "/etc/resolv.conf", NULL); - - if (IS_DEBUGSTAGE1) - while (1); - - log_message("move: pivot_rooting"); - // trick so that kernel won't try to mount the root device when initrd exits - if (scall((fd = open("/proc/sys/kernel/real-root-dev", O_WRONLY)) < 0, "open")) - return RETURN_ERROR; - if (scall(write(fd, rootdev, strlen(rootdev)) != (signed)strlen(rootdev), "write")) { - close(fd); - return RETURN_ERROR; - } - close(fd); - - if (scall(mkdir(SLASH_LOCATION "/stage1", 0755), "mkdir")) - return RETURN_ERROR; - - if (scall(pivot_root(SLASH_LOCATION, SLASH_LOCATION "/stage1"), "pivot_root")) - return RETURN_ERROR; - - return RETURN_OK; -} -#endif - - -int main(int argc __attribute__ ((unused)), char **argv __attribute__ ((unused)), char **env) -{ - char ** argptr; - char * stage2_args[30]; -#ifdef ENABLE_PCMCIA - char * pcmcia_adapter = NULL; -#endif - - if (getpid() > 50) - set_param(MODE_TESTING); - - spawn_interactive(); - - open_log(); - log_message("welcome to the " DISTRIB_NAME " install (mdk-stage1, version " VERSION " built " __DATE__ " " __TIME__")"); - process_cmdline(); - handle_env(env); -#ifdef SPAWN_SHELL - spawn_shell(); -#endif - init_modules_insmoding(); - init_frontend("Welcome to " DISTRIB_NAME -#ifdef MANDRAKE_MOVE - ", " -#else - " (" VERSION ") " -#endif - __DATE__ " " __TIME__); - - if (IS_EXPERT) - expert_third_party_modules(); - - if (IS_UPDATEMODULES) - update_modules(); - -#ifdef ENABLE_PCMCIA - if (!IS_NOAUTO) - handle_pcmcia(&pcmcia_adapter); -#endif - - // load usb interface as soon as possible, helps usb mouse detection in stage2 */ - probe_that_type(USB_CONTROLLERS, BUS_USB); - - if (IS_CHANGEDISK) - stg1_info_message("You are starting the installation with an alternate booting method. " - "Please change your disk, and insert the Installation disk."); - - if (IS_RESCUE && total_memory() < MEM_LIMIT_RESCUE) { - stg1_error_message("You are starting the rescue with a low memory configuration. " - "Our experience shows that your system may crash at any point " - "or lock up for no apparent reason. Continue at " - "your own risk. Alternatively, you may reboot your system now."); - } - -#ifdef MANDRAKE_MOVE - if (total_memory() < MEM_LIMIT_MOVE) - stg1_error_message(DISTRIB_NAME " typically needs more than %d Mbytes of memory (detected %d Mbytes). You may proceed, but the machine may crash or lock up for no apparent reason. Continue at your own risk. Alternatively, you may reboot your system now.", - MEM_LIMIT_MOVE, total_memory()); - if (mandrake_move_pre() != RETURN_OK) - stg1_error_message("Fatal error when preparing MandrakeMove."); -#endif - -#ifndef DISABLE_DISK - if (IS_RECOVERY && streq(get_auto_value("method"), "cdrom")) { - if (!process_recovery()) - method_select_and_prepare(); - } else -#endif - method_select_and_prepare(); - - if (!IS_RAMDISK) - if (symlink(IMAGE_LOCATION_REAL LIVE_LOCATION, STAGE2_LOCATION) != 0) - log_perror("symlink from " IMAGE_LOCATION_REAL LIVE_LOCATION " to " STAGE2_LOCATION " failed"); - - if (interactive_pid != 0) - kill(interactive_pid, 9); - -#ifdef MANDRAKE_MOVE - if (mandrake_move_post() != RETURN_OK) - stg1_error_message("Fatal error when launching MandrakeMove."); -#endif - - if (shell_pid != 0) { - int fd; - kill(shell_pid, 9); - fd = open("/dev/tty2", O_RDWR); - write(fd, "Killed\n", 7); - close(fd); - } - - umount("/tmp/tmpfs"); - finish_frontend(); - close_log(); - -#ifndef MANDRAKE_MOVE - if (IS_RESCUE) -#endif - return 66; - if (IS_TESTING) - return 0; - - argptr = stage2_args; - *argptr++ = "/usr/bin/runinstall2"; - *argptr++ = "--method"; - *argptr++ = method_name; -#ifdef ENABLE_PCMCIA - if (pcmcia_adapter) { - *argptr++ = "--pcmcia"; - *argptr++ = pcmcia_adapter; - } -#endif - if (disable_modules) - *argptr++ = "--blank"; - if (stage2_kickstart) { - *argptr++ = "--kickstart"; - *argptr++ = stage2_kickstart; - } - *argptr++ = NULL; - - execve(stage2_args[0], stage2_args, grab_env()); - - printf("error in exec of stage2 :-(\n"); - printf("trying to execute '/usr/bin/runinstall2' from the installation volume,\nthe following fatal error occurred\n"); - fatal_error(strerror(errno)); - - return 0; /* shut up compiler (we can't get here anyway!) */ -} |