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/*
* Guillaume Cottenceau (gc@mandrakesoft.com)
*
* Copyright 2001 MandrakeSoft
*
*
* 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.
*
*/
#include <stdlib.h>
#define _USE_BSD
#include <sys/types.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <sys/wait.h>
#include <unistd.h>
#include <string.h>
#include <stdio.h>
#include <sys/mount.h>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <linux/unistd.h>
#include <sys/select.h>
#include "config-stage1.h"
#include "frontend.h"
#include "tools.h"
char * env[] = {
"PATH=/usr/bin:/bin:/sbin:/usr/sbin:/mnt/sbin:/mnt/usr/sbin:/mnt/bin:/mnt/usr/bin",
"LD_LIBRARY_PATH=/lib:/usr/lib:/mnt/lib:/mnt/usr/lib:/usr/X11R6/lib:/mnt/usr/X11R6/lib",
"HOME=/",
"TERM=linux",
"TERMINFO=/etc/terminfo",
NULL
};
void pause(void) { unsigned char t; fflush(stdout); read(0, &t, 1); }
/* ------ UUURGH this is duplicated from `init.c', don't edit here........ */
static inline _syscall3(int, reboot, int, magic, int, magic2, int, flag);
#define LOOP_CLR_FD 0x4C01
void del_loop(char *device)
{
int fd;
if ((fd = open(device, O_RDONLY, 0)) < 0) {
printf("del_loop open failed\n");
return;
}
if (ioctl(fd, LOOP_CLR_FD, 0) < 0) {
printf("del_loop ioctl failed");
return;
}
close(fd);
}
struct filesystem { char * dev; char * name; char * fs; int mounted; };
void unmount_filesystems(void)
{
int fd, size;
char buf[65535]; /* this should be big enough */
char *p;
struct filesystem fs[500];
int numfs = 0;
int i, nb;
printf("unmounting filesystems...\n");
fd = open("/proc/mounts", O_RDONLY, 0);
if (fd < 1) {
printf("ERROR: failed to open /proc/mounts");
sleep(2);
return;
}
size = read(fd, buf, sizeof(buf) - 1);
buf[size] = '\0';
close(fd);
p = buf;
while (*p) {
fs[numfs].mounted = 1;
fs[numfs].dev = p;
while (*p != ' ') p++;
*p++ = '\0';
fs[numfs].name = p;
while (*p != ' ') p++;
*p++ = '\0';
fs[numfs].fs = p;
while (*p != ' ') p++;
*p++ = '\0';
while (*p != '\n') p++;
p++;
if (strcmp(fs[numfs].name, "/") != 0) numfs++; /* skip if root, no need to take initrd root in account */
}
/* Pixel's ultra-optimized sorting algorithm:
multiple passes trying to umount everything until nothing moves
anymore (a.k.a holy shotgun method) */
do {
nb = 0;
for (i = 0; i < numfs; i++) {
/*printf("trying with %s\n", fs[i].name);*/
if (fs[i].mounted && umount(fs[i].name) == 0) {
if (strncmp(fs[i].dev + sizeof("/dev/") - 1, "loop",
sizeof("loop") - 1) == 0)
del_loop(fs[i].dev);
printf("\t%s\n", fs[i].name);
fs[i].mounted = 0;
nb++;
}
}
} while (nb);
for (i = nb = 0; i < numfs; i++)
if (fs[i].mounted) {
printf("\t%s umount failed\n", fs[i].name);
if (strcmp(fs[i].fs, "ext2") == 0) nb++; /* don't count not-ext2 umount failed */
}
if (nb) {
printf("failed to umount some filesystems\n");
while (1);
}
}
/* ------ UUURGH -- end */
int main(int argc, char **argv)
{
enum return_type results;
char install_bootloader[] = "Re-install Boot Loader";
char mount_parts[] = "Mount your partitions under /mnt";
char go_to_console[] = "Go to console";
char reboot_[] = "Reboot";
char doc[] = "Doc: what's addressed by this Rescue?";
char * actions[] = { install_bootloader, mount_parts, go_to_console, reboot_, doc, NULL };
char * choice;
init_frontend("Welcome to " DISTRIB_NAME " Rescue (" VERSION ") " __DATE__ " " __TIME__);
do {
int pid;
char * binary = NULL;
choice = "";
results = ask_from_list("Please choose the desired action.", actions, &choice);
if (ptr_begins_static_str(choice, install_bootloader)) {
binary = "/usr/bin/install_bootloader";
}
if (ptr_begins_static_str(choice, mount_parts)) {
binary = "/usr/bin/guessmounts";
}
if (ptr_begins_static_str(choice, reboot_)) {
finish_frontend();
unmount_filesystems();
printf("rebooting system\n");
sleep(2);
reboot(0xfee1dead, 672274793, 0x01234567);
}
if (ptr_begins_static_str(choice, doc)) {
binary = "/usr/bin/rescue-doc";
}
if (binary) {
int wait_status;
suspend_to_console();
if (!(pid = fork())) {
char * child_argv[2];
child_argv[0] = binary;
child_argv[1] = NULL;
execve(child_argv[0], child_argv, env);
printf("Can't execute binary (%s)\n<press Enter>\n", binary);
pause();
return 33;
}
while (wait4(-1, &wait_status, 0, NULL) != pid) {};
printf("<press Enter to return to Rescue GUI>");
pause();
resume_from_suspend();
if (!WIFEXITED(wait_status) || WEXITSTATUS(wait_status) != 0) {
error_message("Program exited abnormally (return code %d).", WEXITSTATUS(wait_status));
if (WIFSIGNALED(wait_status))
error_message("(received signal %d)", WTERMSIG(wait_status));
}
}
} while (results == RETURN_OK && !ptr_begins_static_str(choice, go_to_console));
finish_frontend();
printf("Bye.\n");
return 0;
}
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