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/*
* Guillaume Cottenceau (gc)
*
* Copyright 2000 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.
*
*/
/*
* Portions from Erik Troan (ewt@redhat.com)
*
* Copyright 1996 Red Hat Software
*
*/
#include <stdlib.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <stdio.h>
#include <dirent.h>
#include <sys/types.h>
#include <sys/mount.h>
#include <sys/poll.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <linux/fd.h>
#include "stage1.h"
#include "log.h"
#include "mount.h"
#include "frontend.h"
#include "automatic.h"
#include "tools.h"
#include "utils.h"
#include "params.h"
#include "probing.h"
#include "modules.h"
#include "lomount.h"
int image_has_stage2()
{
return access(COMPRESSED_FILE_REL(IMAGE_LOCATION "/"), R_OK) == 0 ||
access(IMAGE_LOCATION "/" LIVE_LOCATION_REL, R_OK) == 0;
}
enum return_type create_IMAGE_LOCATION(char *location_full)
{
struct stat statbuf;
int offset = strncmp(location_full, IMAGE_LOCATION_DIR, sizeof(IMAGE_LOCATION_DIR) - 1) == 0 ? sizeof(IMAGE_LOCATION_DIR) - 1 : 0;
char *with_arch = asprintf_("%s/%s", location_full, ARCH);
log_message("trying %s", with_arch);
if (stat(with_arch, &statbuf) == 0 && S_ISDIR(statbuf.st_mode))
location_full = with_arch;
log_message("assuming %s is a mirror tree", location_full + offset);
unlink(IMAGE_LOCATION);
if (symlink(location_full + offset, IMAGE_LOCATION) != 0)
return RETURN_ERROR;
return RETURN_OK;
}
int ramdisk_possible(void)
{
if (total_memory() > (IS_RESCUE ? MEM_LIMIT_RESCUE : MEM_LIMIT_DRAKX))
return 1;
else {
log_message("warning, ramdisk is not possible due to low mem!");
return 0;
}
}
int compressed_image_preload(void)
{
if (total_memory() > (IS_RESCUE ? MEM_LIMIT_RESCUE_PRELOAD : MEM_LIMIT_DRAKX_PRELOAD))
return 1;
else {
log_message("warning, not preloading compressed due to low mem");
return 0;
}
}
enum return_type save_fd(int from_fd, char * to, void (*callback_func)(int overall))
{
FILE * f_to;
size_t quantity __attribute__((aligned(16))), overall = 0;
char buf[4096] __attribute__((aligned(4096)));
int ret = RETURN_ERROR;
if (!(f_to = fopen(to, "w"))) {
log_perror(to);
goto close_from;
}
do {
quantity = read(from_fd, buf, sizeof(buf));
if (quantity > 0) {
if (fwrite(buf, 1, quantity, f_to) != quantity) {
log_message("short write (%s)", strerror(errno));
goto cleanup;
}
} else if (quantity == -1) {
log_message("an error occured: %s", strerror(errno));
goto cleanup;
}
if (callback_func) {
overall += quantity;
callback_func(overall);
}
} while (quantity);
ret = RETURN_OK;
cleanup:
fclose(f_to);
close_from:
close(from_fd);
return ret;
}
enum return_type copy_file(char * from, char * to, void (*callback_func)(int overall))
{
int from_fd;
log_message("copy_file: %s -> %s", from, to);
from_fd = open(from, O_RDONLY);
if (from_fd != -1) {
return save_fd(from_fd, to, callback_func);
} else {
log_perror(from);
return RETURN_ERROR;
}
}
enum return_type mount_compressed_image(char *compressed_image, char *location_mount)
{
if (lomount(compressed_image, location_mount, NULL, 1)) {
stg1_error_message("Could not mount compressed loopback :(.");
return RETURN_ERROR;
}
return RETURN_OK;
}
enum return_type preload_mount_compressed_fd(int compressed_fd, int image_size, char *image_name, char *location_mount)
{
int ret;
char *compressed_tmpfs = asprintf_("/tmp/%s", image_name);
char *buf = "Loading program into memory...";
init_progression(buf, image_size);
ret = save_fd(compressed_fd, compressed_tmpfs, update_progression);
end_progression();
if (ret != RETURN_OK)
return ret;
return mount_compressed_image(compressed_tmpfs, location_mount);
}
enum return_type mount_compressed_image_may_preload(char *image_name, char *location_mount, int preload)
{
char *compressed_image = asprintf_("%s/%s", COMPRESSED_LOCATION, image_name);
log_message("mount_compressed_may_preload: %s into %s (preload = %d)", compressed_image, location_mount, preload);
if (access(compressed_image, R_OK) != 0) return RETURN_ERROR;
if (preload) {
int compressed_fd = open(compressed_image, O_RDONLY);
if (compressed_fd != -1) {
return preload_mount_compressed_fd(compressed_fd, file_size(compressed_image), image_name, location_mount);
} else {
log_perror(compressed_image);
return RETURN_ERROR;
}
} else {
return mount_compressed_image(compressed_image, location_mount);
}
}
enum return_type may_load_compressed_image(void)
{
if (!IS_RESCUE && access(IMAGE_LOCATION "/" LIVE_LOCATION_REL, R_OK) == 0) {
/* LIVE install */
return RETURN_OK;
} else {
/* compressed install */
return mount_compressed_image_may_preload(COMPRESSED_NAME(""), STAGE2_LOCATION, compressed_image_preload());
}
}
enum return_type load_compressed_fd(int fd, int size)
{
return preload_mount_compressed_fd(fd, size, COMPRESSED_NAME(""), STAGE2_LOCATION);
}
int try_mount(char * dev, char * location)
{
char device_fullname[50];
snprintf(device_fullname, sizeof(device_fullname), "/dev/%s", dev);
if (my_mount(device_fullname, location, "auto", 0) == -1) {
return 1;
}
return 0;
}
#ifndef DISABLE_DISK
int get_disks(char *** names, char *** models)
{
char ** ptr;
int count = 0;
my_modprobe("ide_disk", ANY_DRIVER_TYPE, NULL);
my_modprobe("sd_mod", ANY_DRIVER_TYPE, NULL);
get_medias(DISK, names, models, BUS_ANY);
ptr = *names;
while (ptr && *ptr) {
count++;
ptr++;
}
return count;
}
#endif
#ifndef DISABLE_CDROM
int get_cdroms(char *** names, char *** models)
{
char ** ptr;
int count = 0;
my_modprobe("ide_cd_mod", ANY_DRIVER_TYPE, NULL);
my_modprobe("sr_mod", ANY_DRIVER_TYPE, NULL);
get_medias(CDROM, names, models, BUS_ANY);
ptr = *names;
while (ptr && *ptr) {
count++;
ptr++;
}
return count;
}
#endif
char * floppy_device(void)
{
char ** names, ** models;
int fd;
my_modprobe("floppy", ANY_DRIVER_TYPE, NULL);
fd = open("/dev/fd0", O_RDONLY|O_NONBLOCK);
if (fd != -1) {
char drivtyp[17];
if (!ioctl(fd, FDGETDRVTYP, (void *)drivtyp)) {
struct floppy_drive_struct ds;
log_message("/dev/fd0 type: %s", drivtyp);
if (!ioctl(fd, FDPOLLDRVSTAT, &ds)) {
log_message("\ttrack: %d", ds.track);
if (ds.track >= 0) {
close(fd);
return "/dev/fd0";
}
}
} else {
log_perror("can't FDGETDRVTYP /dev/fd0");
}
close(fd);
}
log_message("seems that you don't have a regular floppy drive");
my_modprobe("sd_mod", ANY_DRIVER_TYPE, NULL);
get_medias(FLOPPY, &names, &models, BUS_ANY);
if (names && *names)
return asprintf_("/dev/%s", *names);
else
return NULL;
}
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