diff options
Diffstat (limited to 'mdk-stage1/disk.c')
| -rw-r--r-- | mdk-stage1/disk.c | 343 |
1 files changed, 0 insertions, 343 deletions
diff --git a/mdk-stage1/disk.c b/mdk-stage1/disk.c deleted file mode 100644 index 375727fdf..000000000 --- a/mdk-stage1/disk.c +++ /dev/null @@ -1,343 +0,0 @@ -/* - * 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 <stdlib.h> -#include <unistd.h> -#include <stdio.h> -#include <string.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <fcntl.h> -#include <string.h> -#include "stage1.h" -#include "frontend.h" -#include "modules.h" -#include "probing.h" -#include "log.h" -#include "mount.h" -#include "lomount.h" -#include "automatic.h" - -#include "disk.h" - -struct partition_detection_anchor { - off_t offset; - const char * anchor; -}; - -static int seek_and_compare(int fd, struct partition_detection_anchor anch) -{ - char buf[500]; - size_t count; - if (lseek(fd, anch.offset, SEEK_SET) == (off_t)-1) { - log_perror("seek failed"); - return -1; - } - count = read(fd, buf, strlen(anch.anchor)); - if (count != strlen(anch.anchor)) { - log_perror("read failed"); - return -1; - } - buf[count] = '\0'; - if (strcmp(anch.anchor, buf)) - return 1; - return 0; -} - -static const char * detect_partition_type(char * dev) -{ - struct partition_detection_info { - const char * name; - struct partition_detection_anchor anchor0; - struct partition_detection_anchor anchor1; - struct partition_detection_anchor anchor2; - }; - struct partition_detection_info partitions_signatures[] = { - { "Linux Swap", { 4086, "SWAP-SPACE" }, { 0, NULL }, { 0, NULL } }, - { "Linux Swap", { 4086, "SWAPSPACE2" }, { 0, NULL }, { 0, NULL } }, - { "Ext2", { 0x438, "\x53\xEF" }, { 0, NULL }, { 0, NULL } }, - { "ReiserFS", { 0x10034, "ReIsErFs" }, { 0, NULL }, { 0, NULL } }, - { "ReiserFS", { 0x10034, "ReIsEr2Fs" }, { 0, NULL }, { 0, NULL } }, - { "XFS", { 0, "XFSB" }, { 0x200, "XAGF" }, { 0x400, "XAGI" } }, - { "JFS", { 0x8000, "JFS1" }, { 0, NULL }, { 0, NULL } }, - { "NTFS", { 0x1FE, "\x55\xAA" }, { 0x3, "NTFS" }, { 0, NULL } }, - { "FAT32", { 0x1FE, "\x55\xAA" }, { 0x52, "FAT32" }, { 0, NULL } }, - { "FAT", { 0x1FE, "\x55\xAA" }, { 0x36, "FAT" }, { 0, NULL } }, - { "Linux LVM", { 0, "HM\1\0" }, { 0, NULL }, { 0, NULL } } - }; - int partitions_signatures_nb = sizeof(partitions_signatures) / sizeof(struct partition_detection_info); - int i; - int fd; - - char device_fullname[50]; - strcpy(device_fullname, "/dev/"); - strcat(device_fullname, dev); - - if (ensure_dev_exists(device_fullname)) - return NULL; - log_message("guessing type of %s", device_fullname); - - if ((fd = open(device_fullname, O_RDONLY, 0)) < 0) { - log_perror("open"); - return NULL; - } - - for (i=0; i<partitions_signatures_nb; i++) { - int results = seek_and_compare(fd, partitions_signatures[i].anchor0); - if (results == -1) - goto detect_partition_type_end; - if (results == 1) - continue; - if (!partitions_signatures[i].anchor1.anchor) - goto detect_partition_found_it; - - results = seek_and_compare(fd, partitions_signatures[i].anchor1); - if (results == -1) - goto detect_partition_type_end; - if (results == 1) - continue; - if (!partitions_signatures[i].anchor2.anchor) - goto detect_partition_found_it; - - results = seek_and_compare(fd, partitions_signatures[i].anchor2); - if (results == -1) - goto detect_partition_type_end; - if (results == 1) - continue; - - detect_partition_found_it: - return partitions_signatures[i].name; - } - - detect_partition_type_end: - close(fd); - return NULL; -} - -static char * disk_extract_list_directory(char * direct) -{ - char ** full = list_directory(direct); - char tmp[2000] = ""; - int i; - for (i=0; i<5 ; i++) { - if (!full || !*full) - break; - strcat(tmp, *full); - strcat(tmp, "\n"); - full++; - } - return strdup(tmp); -} - -static enum return_type try_with_device(char *dev_name) -{ - char * questions_location[] = { "Directory or ISO image", NULL }; - char * questions_location_auto[] = { "directory", NULL }; - static char ** answers_location = NULL; - char device_fullname[50]; - char location_full[500]; - - char * disk_own_mount = "/tmp/hdimage"; - - int major, minor, blocks; - char name[100]; - - char buf[512]; - FILE * f; - char * parts[50]; - char * parts_comments[50]; - struct stat statbuf; - int i = 0; - enum return_type results; - char * choice; - - if (!(f = fopen("/proc/partitions", "rb")) || !fgets(buf, sizeof(buf), f) || !fgets(buf, sizeof(buf), f)) { - log_perror(dev_name); - stg1_error_message("Could not read partitions information."); - return RETURN_ERROR; - } - - while (fgets(buf, sizeof(buf), f)) { - memset(name, 0, sizeof(name)); - sscanf(buf, " %d %d %d %s", &major, &minor, &blocks, name); - if ((strstr(name, dev_name) == name) && (blocks > 1) && (name[strlen(dev_name)] != '\0')) { - const char * partition_type = detect_partition_type(name); - parts[i] = strdup(name); - parts_comments[i] = (char *) malloc(sizeof(char) * 100); - sprintf(parts_comments[i], "size: %d Mbytes", blocks >> 10); - if (partition_type) { - strcat(parts_comments[i], ", type: "); - strcat(parts_comments[i], partition_type); - } - i++; - } - } - parts[i] = NULL; - fclose(f); - - if (parts[0] == NULL) { - stg1_error_message("No partitions found."); - return RETURN_ERROR; - } - - results = ask_from_list_comments_auto("Please choose the partition where " DISTRIB_NAME " is copied.", - parts, parts_comments, &choice, "partition", parts); - if (results != RETURN_OK) - return results; - - strcpy(device_fullname, "/dev/"); - strcat(device_fullname, choice); - - if (my_mount(device_fullname, disk_own_mount, "ext2", 0) == -1 && - my_mount(device_fullname, disk_own_mount, "vfat", 0) == -1 && - my_mount(device_fullname, disk_own_mount, "reiserfs", 0) == -1) { - stg1_error_message("I can't find a valid filesystem (tried: ext2, vfat, reiserfs)."); - return try_with_device(dev_name); - } - - if (ask_from_entries_auto("Please enter the directory (or ISO image file) containing the " DISTRIB_NAME " Distribution.", - questions_location, &answers_location, 24, questions_location_auto, NULL) != RETURN_OK) { - umount(disk_own_mount); - return try_with_device(dev_name); - } - - strcpy(location_full, disk_own_mount); - strcat(location_full, "/"); - strcat(location_full, answers_location[0]); - - if (access(location_full, R_OK)) { - stg1_error_message("Directory or ISO image file could not be found on partition.\n" - "Here's a short extract of the files in the root of the partition:\n" - "%s", disk_extract_list_directory(disk_own_mount)); - umount(disk_own_mount); - return try_with_device(dev_name); - } - - unlink(IMAGE_LOCATION); - - if (!stat(location_full, &statbuf) && !S_ISDIR(statbuf.st_mode)) { - log_message("%s exists and is not a directory, assuming this is an ISO image", location_full); - if (lomount(location_full, IMAGE_LOCATION)) { - stg1_error_message("Could not mount file %s as an ISO image of the " DISTRIB_NAME " Distribution.", answers_location[0]); - umount(disk_own_mount); - return try_with_device(dev_name); - } - } else - symlink(location_full, IMAGE_LOCATION); - - if (IS_SPECIAL_STAGE2 || ramdisk_possible()) { - /* RAMDISK install */ - if (access(IMAGE_LOCATION RAMDISK_LOCATION, R_OK)) { - stg1_error_message("I can't find the " DISTRIB_NAME " Distribution in the specified directory. " - "(I need the subdirectory " RAMDISK_LOCATION ")\n" - "Here's a short extract of the files in the directory:\n" - "%s", disk_extract_list_directory(IMAGE_LOCATION)); - loumount(); - umount(disk_own_mount); - return try_with_device(dev_name); - } - if (load_ramdisk() != RETURN_OK) { - stg1_error_message("Could not load program into memory."); - loumount(); - umount(disk_own_mount); - return try_with_device(dev_name); - } - } else { - /* LIVE install */ - char p; - if (access(IMAGE_LOCATION LIVE_LOCATION, R_OK)) { - stg1_error_message("I can't find the " DISTRIB_NAME " Distribution in the specified directory. " - "(I need the subdirectory " LIVE_LOCATION ")\n" - "Here's a short extract of the files in the directory:\n" - "%s", disk_extract_list_directory(IMAGE_LOCATION)); - loumount(); - umount(disk_own_mount); - return try_with_device(dev_name); - } - if (readlink(IMAGE_LOCATION LIVE_LOCATION "/usr/bin/runinstall2", &p, 1) != 1) { - stg1_error_message("The " DISTRIB_NAME " Distribution seems to be copied on a Windows partition. " - "You need more memory to perform an installation from a Windows partition. " - "Another solution if to copy the " DISTRIB_NAME " Distribution on a Linux partition."); - loumount(); - umount(disk_own_mount); - return try_with_device(dev_name); - } - log_message("found the " DISTRIB_NAME " Installation, good news!"); - } - - if (IS_RESCUE) { - loumount(); - umount(disk_own_mount); - } - - method_name = strdup("disk"); - return RETURN_OK; -} - -enum return_type disk_prepare(void) -{ - char ** medias, ** ptr, ** medias_models; - char * choice; - int i, count = 0; - enum return_type results; - - my_insmod("sd_mod", ANY_DRIVER_TYPE, NULL); - - get_medias(DISK, &medias, &medias_models, BUS_ANY); - - ptr = medias; - while (ptr && *ptr) { - count++; - ptr++; - } - - if (count == 0) { - stg1_error_message("No DISK drive found."); - i = ask_insmod(SCSI_ADAPTERS); - if (i == RETURN_BACK) - return RETURN_BACK; - return disk_prepare(); - } - - if (count == 1) { - results = try_with_device(*medias); - if (results == RETURN_OK) - return RETURN_OK; - i = ask_insmod(SCSI_ADAPTERS); - if (i == RETURN_BACK) - return RETURN_BACK; - return disk_prepare(); - } - - results = ask_from_list_comments_auto("Please choose the DISK drive on which you copied the " DISTRIB_NAME " Distribution.", - medias, medias_models, &choice, "disk", medias); - - if (results != RETURN_OK) - return results; - - results = try_with_device(choice); - if (results == RETURN_OK) - return RETURN_OK; - i = ask_insmod(SCSI_ADAPTERS); - if (i == RETURN_BACK) - return RETURN_BACK; - return disk_prepare(); -} |