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Diffstat (limited to 'mtdpart.c')
| -rw-r--r-- | mtdpart.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/mtdpart.c b/mtdpart.c deleted file mode 100644 index 0016e34..0000000 --- a/mtdpart.c +++ /dev/null @@ -1,194 +0,0 @@ -/* - * mtdpart.c - * - * Copyright 2015 The Chromium OS Authors. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as - * published by the Free Software Foundation. - * - * Overview: - * This utility adds or removes a partition from an MTD device. - */ - -#define PROGRAM_NAME "mtdpart" - -#include <fcntl.h> -#include <getopt.h> -#include <limits.h> -#include <linux/blkpg.h> -#include <stdio.h> -#include <string.h> -#include <sys/ioctl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "common.h" - -static void display_help(int status) -{ - fprintf(status == EXIT_SUCCESS ? stdout : stderr, -"Usage: %1$s add [OPTION] <MTD_DEVICE> <PART_NAME> <START> <SIZE>\n" -" %1$s del [OPTION] <MTD_DEVICE> <PART_NUMBER>\n" -"Adds a partition to an MTD device, or remove an existing partition from it.\n" -"\n" -" -h, --help Display this help and exit\n" -" --version Output version information and exit\n" -"\n" -"START location and SIZE of the partition are in bytes. They should align on\n" -"eraseblock size.\n", - PROGRAM_NAME - ); - exit(status); -} - -static void display_version(void) -{ - printf("%1$s " VERSION "\n" - "\n" - "%1$s comes with NO WARRANTY\n" - "to the extent permitted by law.\n" - "\n" - "You may redistribute copies of %1$s\n" - "under the terms of the GNU General Public Licence.\n" - "See the file `COPYING' for more information.\n", - PROGRAM_NAME); - exit(EXIT_SUCCESS); -} - -/* Command arguments */ - -typedef enum { - COMMAND_ADD, - COMMAND_DEL -} command_type; - -static command_type command; /* add or del */ -static const char *mtddev; /* mtd device name */ -static const char *part_name; /* partition name */ -static int part_no; /* partition number */ -static long long start_addr; /* start address */ -static long long length; /* partition size */ - -static void process_options(int argc, char * const argv[]) -{ - int error = 0; - - for (;;) { - int option_index = 0; - static const char short_options[] = "h"; - static const struct option long_options[] = { - {"version", no_argument, 0, 0}, - {"help", no_argument, 0, 'h'}, - {0, 0, 0, 0}, - }; - - int c = getopt_long(argc, argv, short_options, - long_options, &option_index); - if (c == EOF) { - break; - } - - switch (c) { - case 0: - display_version(); - break; - case 'h': - display_help(EXIT_SUCCESS); - break; - case '?': - error++; - break; - } - } - - if ((argc - optind) < 3 || error) - display_help(EXIT_FAILURE); - - const char *s_command = argv[optind++]; - mtddev = argv[optind++]; - - if (strcmp(s_command, "del") == 0 && (argc - optind) == 1) { - const char *s_part_no = argv[optind++]; - - long tmp = simple_strtol(s_part_no, &error); - if (tmp < 0) - errmsg_die("Can't specify negative partition number: %ld", - tmp); - if (tmp > INT_MAX) - errmsg_die("Partition number exceeds INT_MAX: %ld", - tmp); - - part_no = tmp; - command = COMMAND_DEL; - } else if (strcmp(s_command, "add") == 0 && (argc - optind) == 3) { - const char *s_start; - const char *s_length; - - part_name = argv[optind++]; - s_start = argv[optind++]; - s_length = argv[optind++]; - - if (strlen(part_name) >= BLKPG_DEVNAMELTH) - errmsg_die("Partition name (%s) should be less than %d characters", - part_name, BLKPG_DEVNAMELTH); - - start_addr = simple_strtoll(s_start, &error); - if (start_addr < 0) - errmsg_die("Can't specify negative start offset: %lld", - start_addr); - - length = simple_strtoll(s_length, &error); - if (length < 0) - errmsg_die("Can't specify negative length: %lld", - length); - - command = COMMAND_ADD; - } else - display_help(EXIT_FAILURE); - - if (error) - display_help(EXIT_FAILURE); -} - - -int main(int argc, char * const argv[]) -{ - int fd; - struct blkpg_partition part; - struct blkpg_ioctl_arg arg; - - process_options(argc, argv); - - fd = open(mtddev, O_RDWR | O_CLOEXEC); - if (fd == -1) - sys_errmsg_die("Cannot open %s", mtddev); - - memset(&part, 0, sizeof(part)); - - memset(&arg, 0, sizeof(arg)); - arg.datalen = sizeof(part); - arg.data = ∂ - - switch (command) { - case COMMAND_ADD: - part.start = start_addr; - part.length = length; - strncpy(part.devname, part_name, sizeof(part.devname)); - arg.op = BLKPG_ADD_PARTITION; - break; - case COMMAND_DEL: - part.pno = part_no; - arg.op = BLKPG_DEL_PARTITION; - break; - } - - if (ioctl(fd, BLKPG, &arg)) - sys_errmsg_die("Failed to issue BLKPG ioctl"); - - close(fd); - - /* Exit happy */ - return EXIT_SUCCESS; -} |