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/*
* Copyright 2005 Mandriva
*
* 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 "ka.h"
#include <sys/mount.h>
#include "mount.h"
#include <sys/wait.h>
#include <dirent.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <unistd.h>
#include "config-stage1.h"
#include "frontend.h"
#include "log.h"
#include "tools.h"
struct in_addr next_server = { 0 };
#if 0
static void save_stuff_for_rescue(void)
{
copy_file("/etc/resolv.conf", STAGE2_LOCATION "/etc/resolv.conf", NULL);
}
#endif
static void my_pause(void) {
unsigned char t;
fflush(stdout);
read(0, &t, 1);
}
static enum return_type ka_wait_for_stage2(int count)
{
char * ramdisk = "/dev/ram3"; /* warning, verify that this file exists in the initrd*/
char * ka_launch[] = { "/ka/ka-d-client", "-w","-s","getstage2","-e","(cd " STAGE2_LOCATION "; tar -x -f - )", NULL }; /* The command line for ka_launch */
char * mkfs_launch[] = { "/sbin/mke2fs", "-m", "0", ramdisk, NULL}; /* The mkfs command for formating the ramdisk */
log_message("KA: Preparing to receive stage 2....");
wait_message("Preparing to receive stage 2");
int pida, wait_status;
if (!(pida = fork())) { /* Forking current process for running mkfs */
//close(1);
close(2);
execv(mkfs_launch[0], mkfs_launch); /* Formating the ramdisk */
printf("KA: Can't execute %s\n<press Enter>\n", mkfs_launch[0]);
my_pause();
return KAERR_CANTFORK;
}
while (wait4(-1, &wait_status, 0, NULL) != pida) {}; /* Waiting the end of mkfs */
remove_wait_message();
wait_message("Mounting /dev/ram3 at %s", STAGE2_LOCATION);
if (my_mount(ramdisk, STAGE2_LOCATION, "ext2", 1)) {/* Trying to mount the ramdisk */
return RETURN_ERROR;
}
remove_wait_message();
log_message("KA: Waiting for stage 2....");
wait_message("Waiting for rescue from KA server (Try %d/%d)", count, KA_MAX_RETRY);
pid_t pid; /* Process ID of the child process */
pid_t wpid; /* Process ID from wait() */
int status; /* Exit status from wait() */
pid = fork();
if ( pid == -1 ) {
fprintf(stderr, "%s: Failed to fork()\n", strerror(errno));
exit(13);
} else if ( pid == 0 ) {
// close(2);
execv(ka_launch[0], ka_launch);
} else {
// wpid = wait(&status); /* Child's exit status */
wpid = wait4(-1, &status, 0, NULL);
if ( wpid == -1 ) {
fprintf(stderr,"%s: wait()\n", strerror(errno));
return RETURN_ERROR;
} else if ( wpid != pid )
abort();
else {
if ( WIFEXITED(status) ) {
printf("Exited: $? = %d\n", WEXITSTATUS(status));
} else if ( WIFSIGNALED(status) ) {
printf("Signal: %d%s\n", WTERMSIG(status), WCOREDUMP(status) ? " with core file." : "");
}
}
}
remove_wait_message();
return RETURN_OK;
// if (!(pid = fork())) { /* Froking current process for running ka-deploy (client side) */
// close(1); /* Closing stdout */
// close(2); /* Closing stderr */
// execve(ka_launch[0], ka_launch,grab_env()); /* Running ka-deploy (client side) */
// printf("KA: Can't execute %s\n<press Enter>\n", ka_launch[0]);
// log_message("KA: Can't execute %s\n<press Enter>\n", ka_launch[0]);
// my_pause();
// return KAERR_CANTFORK;
//}
//while (wait4(-1, &wait_status, 0, NULL) != pid) {}; /* Waiting the end of duplication */
// log_message("kalaunch ret %d\n", WIFEXITED(wait_status));
// remove_wait_message();
//sleep(100000);
// return RETURN_OK;
}
enum return_type perform_ka(void) {
enum return_type results;
int server_failure = 1; /* Number of time we've failed to find a ka server */
FILE *f = fopen ("/ka/tftpserver","w");
if (f != NULL) {
/* Writing the NEXT_SERVER value of the DHCP Request in the /ka/tftpserver file */
fprintf(f,"%s\n",inet_ntoa(next_server));
fclose(f);
}
log_message("KA: Trying to retrieve stage2 from server");
log_message("KA: ka_wait_for_stage2");
do {
/* We are trying to get a valid stage 2 (rescue) */
results=ka_wait_for_stage2(server_failure);
if (results != RETURN_OK) {
return results;
} else {
/* Trying to open STAGE2_LOCATION/ka directory */
char dir[255] = STAGE2_LOCATION;
strcat(dir,"/ka");
DIR *dp = opendir(dir);
/* Does the STAGE2_LOCATION/ka directory exists ? = Does the rescue with ka well downloaded ?*/
if (!dp) {
log_message("KA: Server not found !");
/* Be sure that the STAGE2_LOCATION isn't mounted after receiving a wrong rescue */
if (umount (STAGE2_LOCATION)) {
log_perror("KA: Unable to umount STAGE2");
}
int cpt;
if (server_failure++ == KA_MAX_RETRY){
/* if the KA server can't be reach KA_MAX_RETRY times */
char * reboot_launch[] = { "/sbin/reboot", NULL};
for (cpt=5; cpt>0; cpt--) {
wait_message("!!! Can't reach a valid KA server !!! (Rebooting in %d sec)",cpt);
sleep (1);
}
/* Rebooting the computer to avoid infinite loop on ka mode */
execv(reboot_launch[0], reboot_launch);
}
for (cpt=5; cpt>0; cpt--) {
wait_message("KA server not found ! (Try %d/%d in %d sec)",server_failure,KA_MAX_RETRY,cpt);
log_message("Ka not found %d/%d", server_failure,KA_MAX_RETRY);
sleep (1);
}
remove_wait_message();
/* We should try another time*/
results=RETURN_BACK;
continue;
}
if (dp) {
log_message("KA: Stage 2 downloaded successfully");
closedir(dp); /* Closing the /ka directory */
server_failure=1; /* Resetting server_failure */
results = RETURN_OK;
}
}
log_message("KA: Preparing chroot");
return RETURN_OK;
// if (IS_RESCUE) { /* if we are in rescue mode */
// save_stuff_for_rescue(); /* Saving resolve.conf */
// if (umount (STAGE2_LOCATION)) { /* Unmounting STAGE2 elseif kernel can't mount it ! */
// log_perror("KA: Unable to umount STAGE2");
// return RETURN_ERROR;
// }
// }
} while (results == RETURN_BACK);
// method_name = strdup("ka");
return RETURN_OK;
}
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