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/*
* Guillaume Cottenceau (gc@mandrakesoft.com)
*
* Copyright 2000 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.
*
*/
/*
* Portions from Erik Troan (ewt@redhat.com)
*
* Copyright 1996 Red Hat Software
*
*/
#include <sys/mount.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <ctype.h>
#include "stage1.h"
#include "log.h"
#include "probing.h"
#include "frontend.h"
#include "modules.h"
#include "cdrom.h"
#include "network.h"
#include "disk.h"
/* globals */
int stage1_mode = 0;
struct cmdline_elem params[500];
void fatal_error(char *msg)
{
printf("FATAL ERROR IN STAGE1: %s\n\nI can't recover from this, please reboot manually and send bugreport.\n", msg);
while (1);
}
void process_cmdline(void)
{
char buf[512];
int fd, size, i, p;
log_message("opening /proc/cmdline... ");
if ((fd = open("/proc/cmdline", O_RDONLY, 0)) == -1)
fatal_error("could not open /proc/cmdline");
size = read(fd, buf, sizeof(buf));
buf[size-1] = 0;
close(fd);
log_message("\t%s", buf);
i = 0; p = 0;
while (buf[i] != 0) {
char *name, *value = NULL;
int j = i;
while (buf[i] != ' ' && buf[i] != '=' && buf[i] != 0)
i++;
if (i == j) {
i++;
continue;
}
name = (char *) malloc(i-j + 1);
memcpy(name, &buf[j], i-j);
name[i-j] = 0;
if (buf[i] == '=') {
int k = i+1;
i++;
while (buf[i] != ' ' && buf[i] != 0)
i++;
value = (char *) malloc(i-k + 1);
memcpy(value, &buf[k], i-k);
value[i-k] = 0;
}
params[p].name = name;
params[p].value = value;
p++;
i++;
if (!strcmp(name, "expert")) stage1_mode |= MODE_EXPERT;
if (!strcmp(name, "text")) stage1_mode |= MODE_TEXT;
if (!strcmp(name, "rescue")) stage1_mode |= MODE_RESCUE;
if (!strcmp(name, "pcmcia")) stage1_mode |= MODE_PCMCIA;
if (!strcmp(name, "cdrom")) stage1_mode |= MODE_CDROM;
}
params[p].name = NULL;
log_message("\tgot %d args", p);
}
/* spawns a shell on console #2 */
void spawn_shell(void)
{
pid_t pid;
int fd;
char * shell_name = "/sbin/sash";
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, X_OK)) {
log_message("cannot open shell - %s doesn't exist", shell_name);
return;
}
if (!(pid = fork())) {
dup2(fd, 0);
dup2(fd, 1);
dup2(fd, 2);
close(fd);
setsid();
if (ioctl(0, TIOCSCTTY, NULL))
perror("could not set new controlling tty");
execl(shell_name, shell_name, NULL);
log_message("execl of %s failed: %s", shell_name, strerror(errno));
}
close(fd);
}
}
enum return_type method_select_and_prepare(void)
{
char * disk_install = "Hard disk";
char * cdrom_install = "CDROM drive";
char * network_nfs_install = "NFS server";
char * network_ftp_install = "FTP server";
char * network_http_install = "HTTP server";
enum return_type results;
char * choice;
char * means[10];
int i;
i = 0;
#ifndef DISABLE_NETWORK
means[i] = network_nfs_install; i++;
means[i] = network_ftp_install; i++;
means[i] = network_http_install; i++;
#endif
#ifndef DISABLE_DISK
means[i] = disk_install; i++;
#endif
#ifndef DISABLE_CDROM
means[i] = cdrom_install; i++;
#endif
means[i] = NULL;
results = ask_from_list("Please choose the mean of installation.", means, &choice);
if (results != RETURN_OK)
return results;
if (!strcmp(choice, cdrom_install))
return cdrom_prepare();
else if (!strcmp(choice, disk_install))
return disk_prepare();
else if (!strcmp(choice, network_nfs_install))
return nfs_prepare();
else if (!strcmp(choice, network_ftp_install))
return ftp_prepare();
else if (!strcmp(choice, network_http_install))
return http_prepare();
return RETURN_ERROR;
}
int main(int argc, char **argv)
{
enum return_type ret;
if (getpid() > 50)
stage1_mode |= MODE_TESTING;
open_log(IS_TESTING);
log_message("welcome to the Linux-Mandrake install (stage1, version " VERSION " built " __DATE__ " " __TIME__")");
process_cmdline();
spawn_shell();
if (load_modules_dependencies())
fatal_error("could not open and parse modules dependencies");
init_frontend();
if (IS_CDROM)
ret = cdrom_prepare();
else
ret = method_select_and_prepare();
while (ret == RETURN_BACK)
ret = method_select_and_prepare();
finish_frontend();
close_log();
if (ret == RETURN_ERROR)
fatal_error("could not select an installation method");
return 0;
}
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