diff options
Diffstat (limited to 'mdk-stage1/partition.c')
| -rw-r--r-- | mdk-stage1/partition.c | 171 |
1 files changed, 0 insertions, 171 deletions
diff --git a/mdk-stage1/partition.c b/mdk-stage1/partition.c deleted file mode 100644 index 8fd581017..000000000 --- a/mdk-stage1/partition.c +++ /dev/null @@ -1,171 +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 <libgen.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" -#include "partition.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; - const char *part_type = NULL; - - 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: - part_type = partitions_signatures[i].name; - break; - } - - detect_partition_type_end: - close(fd); - return part_type; -} - -int list_partitions(char * dev_name, char ** parts, char ** comments) -{ - int major, minor, blocks; - char name[100]; - FILE * f; - int i = 0; - char buf[512]; - - if (!(f = fopen("/proc/partitions", "rb")) || !fgets(buf, sizeof(buf), f) || !fgets(buf, sizeof(buf), f)) { - log_perror(dev_name); - return 1; - } - - 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); - comments[i] = (char *) malloc(sizeof(char) * 100); - sprintf(comments[i], "size: %d Mbytes", blocks >> 10); - if (partition_type) { - strcat(comments[i], ", type: "); - strcat(comments[i], partition_type); - } - i++; - } - } - parts[i] = NULL; - fclose(f); - - return 0; -} |