diff options
Diffstat (limited to 'extras/edd_id/edd_id.c')
| -rw-r--r-- | extras/edd_id/edd_id.c | 196 |
1 files changed, 0 insertions, 196 deletions
diff --git a/extras/edd_id/edd_id.c b/extras/edd_id/edd_id.c deleted file mode 100644 index ac4da07611..0000000000 --- a/extras/edd_id/edd_id.c +++ /dev/null @@ -1,196 +0,0 @@ -/* - * edd_id - naming of BIOS disk devices via EDD - * - * Copyright (C) 2005 John Hull <John_Hull@Dell.com> - * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#ifndef _GNU_SOURCE -#define _GNU_SOURCE 1 -#endif - -#include <stdio.h> -#include <stdlib.h> -#include <unistd.h> -#include <fcntl.h> -#include <ctype.h> -#include <string.h> -#include <errno.h> -#include <dirent.h> -#include <stdint.h> - -#include "libudev.h" -#include "libudev-private.h" - -static void log_fn(struct udev *udev, int priority, - const char *file, int line, const char *fn, - const char *format, va_list args) -{ - vsyslog(priority, format, args); -} - -int main(int argc, char *argv[]) -{ - struct udev *udev; - const char *node = NULL; - int i; - int export = 0; - uint32_t disk_id; - uint16_t mbr_valid; - struct dirent *dent; - int disk_fd; - int sysfs_fd; - DIR *dir = NULL; - int rc = 1; - char filename[UTIL_PATH_SIZE]; - char match[UTIL_PATH_SIZE]; - - udev = udev_new(); - if (udev == NULL) - goto exit; - - udev_log_init("edd_id"); - udev_set_log_fn(udev, log_fn); - - for (i = 1 ; i < argc; i++) { - char *arg = argv[i]; - - if (strcmp(arg, "--export") == 0) { - export = 1; - } else - node = arg; - } - if (node == NULL) { - err(udev, "no node specified\n"); - fprintf(stderr, "no node specified\n"); - goto exit; - } - - /* check for kernel support */ - util_strscpyl(filename, sizeof(filename), udev_get_sys_path(udev), "/firmware/edd", NULL); - dir = opendir(filename); - if (dir == NULL) { - info(udev, "no kernel EDD support\n"); - fprintf(stderr, "no kernel EDD support\n"); - rc = 2; - goto exit; - } - - disk_fd = open(node, O_RDONLY); - if (disk_fd < 0) { - info(udev, "unable to open '%s'\n", node); - fprintf(stderr, "unable to open '%s'\n", node); - rc = 3; - goto closedir; - } - - /* check for valid MBR signature */ - if (lseek(disk_fd, 510, SEEK_SET) < 0) { - info(udev, "seek to MBR validity failed '%s'\n", node); - rc = 4; - goto close; - } - if (read(disk_fd, &mbr_valid, sizeof(mbr_valid)) != sizeof(mbr_valid)) { - info(udev, "read MBR validity failed '%s'\n", node); - rc = 5; - goto close; - } - if (mbr_valid != 0xAA55) { - fprintf(stderr, "no valid MBR signature '%s'\n", node); - info(udev, "no valid MBR signature '%s'\n", node); - rc=6; - goto close; - } - - /* read EDD signature */ - if (lseek(disk_fd, 440, SEEK_SET) < 0) { - info(udev, "seek to signature failed '%s'\n", node); - rc = 7; - goto close; - } - if (read(disk_fd, &disk_id, sizeof(disk_id)) != sizeof(disk_id)) { - info(udev, "read signature failed '%s'\n", node); - rc = 8; - goto close; - } - /* all zero is invalid */ - info(udev, "read id 0x%08x from '%s'\n", disk_id, node); - if (disk_id == 0) { - fprintf(stderr, "no EDD signature '%s'\n", node); - info(udev, "'%s' signature is zero\n", node); - rc = 9; - goto close; - } - - /* lookup signature in sysfs to determine the name */ - match[0] = '\0'; - for (dent = readdir(dir); dent != NULL; dent = readdir(dir)) { - char sysfs_id_buf[256]; - uint32_t sysfs_id; - ssize_t size; - - if (dent->d_name[0] == '.') - continue; - - util_strscpyl(filename, sizeof(filename), dent->d_name, "/mbr_signature", NULL); - sysfs_fd = openat(dirfd(dir), filename, O_RDONLY); - if (sysfs_fd < 0) { - info(udev, "unable to open sysfs '%s'\n", filename); - continue; - } - - size = read(sysfs_fd, sysfs_id_buf, sizeof(sysfs_id_buf)-1); - close(sysfs_fd); - if (size <= 0) { - info(udev, "read sysfs '%s' failed\n", filename); - continue; - } - sysfs_id_buf[size] = '\0'; - info(udev, "read '%s' from '%s'\n", sysfs_id_buf, filename); - sysfs_id = strtoul(sysfs_id_buf, NULL, 16); - - /* look for matching value, that appears only once */ - if (disk_id == sysfs_id) { - if (match[0] == '\0') { - /* store id */ - util_strscpy(match, sizeof(match), dent->d_name); - } else { - /* error, same signature for another device */ - info(udev, "'%s' does not have a unique signature\n", node); - fprintf(stderr, "'%s' does not have a unique signature\n", node); - rc = 10; - goto exit; - } - } - } - - if (match[0] != '\0') { - if (export) - printf("ID_EDD=%s\n", match); - else - printf("%s\n", match); - rc = 0; - } - -close: - close(disk_fd); -closedir: - closedir(dir); -exit: - udev_unref(udev); - udev_log_close(); - return rc; -} |