part.c 4.5 KB

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  1. // SPDX-License-Identifier: GPL-2.0+
  2. /*
  3. * Copyright (c) 2012, NVIDIA CORPORATION. All rights reserved.
  4. *
  5. * made from cmd_ext2, which was:
  6. *
  7. * (C) Copyright 2004
  8. * esd gmbh <www.esd-electronics.com>
  9. * Reinhard Arlt <reinhard.arlt@esd-electronics.com>
  10. *
  11. * made from cmd_reiserfs by
  12. *
  13. * (C) Copyright 2003 - 2004
  14. * Sysgo Real-Time Solutions, AG <www.elinos.com>
  15. * Pavel Bartusek <pba@sysgo.com>
  16. */
  17. #include <common.h>
  18. #include <config.h>
  19. #include <command.h>
  20. #include <part.h>
  21. #include <vsprintf.h>
  22. enum cmd_part_info {
  23. CMD_PART_INFO_START = 0,
  24. CMD_PART_INFO_SIZE,
  25. };
  26. static int do_part_uuid(int argc, char * const argv[])
  27. {
  28. int part;
  29. struct blk_desc *dev_desc;
  30. disk_partition_t info;
  31. if (argc < 2)
  32. return CMD_RET_USAGE;
  33. if (argc > 3)
  34. return CMD_RET_USAGE;
  35. part = blk_get_device_part_str(argv[0], argv[1], &dev_desc, &info, 0);
  36. if (part < 0)
  37. return 1;
  38. if (argc > 2)
  39. env_set(argv[2], info.uuid);
  40. else
  41. printf("%s\n", info.uuid);
  42. return 0;
  43. }
  44. static int do_part_list(int argc, char * const argv[])
  45. {
  46. int ret;
  47. struct blk_desc *desc;
  48. char *var = NULL;
  49. bool bootable = false;
  50. int i;
  51. if (argc < 2)
  52. return CMD_RET_USAGE;
  53. if (argc > 2) {
  54. for (i = 2; i < argc ; i++) {
  55. if (argv[i][0] == '-') {
  56. if (!strcmp(argv[i], "-bootable")) {
  57. bootable = true;
  58. } else {
  59. printf("Unknown option %s\n", argv[i]);
  60. return CMD_RET_USAGE;
  61. }
  62. } else {
  63. var = argv[i];
  64. break;
  65. }
  66. }
  67. /* Loops should have been exited at the last argument, which
  68. * as it contained the variable */
  69. if (argc != i + 1)
  70. return CMD_RET_USAGE;
  71. }
  72. ret = blk_get_device_by_str(argv[0], argv[1], &desc);
  73. if (ret < 0)
  74. return 1;
  75. if (var != NULL) {
  76. int p;
  77. char str[512] = { '\0', };
  78. disk_partition_t info;
  79. for (p = 1; p < MAX_SEARCH_PARTITIONS; p++) {
  80. char t[5];
  81. int r = part_get_info(desc, p, &info);
  82. if (r != 0)
  83. continue;
  84. if (bootable && !info.bootable)
  85. continue;
  86. sprintf(t, "%s%x", str[0] ? " " : "", p);
  87. strcat(str, t);
  88. }
  89. env_set(var, str);
  90. return 0;
  91. }
  92. part_print(desc);
  93. return 0;
  94. }
  95. static int do_part_info(int argc, char * const argv[], enum cmd_part_info param)
  96. {
  97. struct blk_desc *desc;
  98. disk_partition_t info;
  99. char buf[512] = { 0 };
  100. char *endp;
  101. int part;
  102. int err;
  103. int ret;
  104. if (argc < 3)
  105. return CMD_RET_USAGE;
  106. if (argc > 4)
  107. return CMD_RET_USAGE;
  108. ret = blk_get_device_by_str(argv[0], argv[1], &desc);
  109. if (ret < 0)
  110. return 1;
  111. part = simple_strtoul(argv[2], &endp, 0);
  112. if (*endp == '\0') {
  113. err = part_get_info(desc, part, &info);
  114. if (err)
  115. return 1;
  116. } else {
  117. part = part_get_info_by_name(desc, argv[2], &info);
  118. if (part == -1)
  119. return 1;
  120. }
  121. switch (param) {
  122. case CMD_PART_INFO_START:
  123. snprintf(buf, sizeof(buf), LBAF, info.start);
  124. break;
  125. case CMD_PART_INFO_SIZE:
  126. snprintf(buf, sizeof(buf), LBAF, info.size);
  127. break;
  128. default:
  129. printf("** Unknown cmd_part_info value: %d\n", param);
  130. return 1;
  131. }
  132. if (argc > 3)
  133. env_set(argv[3], buf);
  134. else
  135. printf("%s\n", buf);
  136. return 0;
  137. }
  138. static int do_part_start(int argc, char * const argv[])
  139. {
  140. return do_part_info(argc, argv, CMD_PART_INFO_START);
  141. }
  142. static int do_part_size(int argc, char * const argv[])
  143. {
  144. return do_part_info(argc, argv, CMD_PART_INFO_SIZE);
  145. }
  146. static int do_part(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  147. {
  148. if (argc < 2)
  149. return CMD_RET_USAGE;
  150. if (!strcmp(argv[1], "uuid"))
  151. return do_part_uuid(argc - 2, argv + 2);
  152. else if (!strcmp(argv[1], "list"))
  153. return do_part_list(argc - 2, argv + 2);
  154. else if (!strcmp(argv[1], "start"))
  155. return do_part_start(argc - 2, argv + 2);
  156. else if (!strcmp(argv[1], "size"))
  157. return do_part_size(argc - 2, argv + 2);
  158. return CMD_RET_USAGE;
  159. }
  160. U_BOOT_CMD(
  161. part, CONFIG_SYS_MAXARGS, 1, do_part,
  162. "disk partition related commands",
  163. "uuid <interface> <dev>:<part>\n"
  164. " - print partition UUID\n"
  165. "part uuid <interface> <dev>:<part> <varname>\n"
  166. " - set environment variable to partition UUID\n"
  167. "part list <interface> <dev>\n"
  168. " - print a device's partition table\n"
  169. "part list <interface> <dev> [flags] <varname>\n"
  170. " - set environment variable to the list of partitions\n"
  171. " flags can be -bootable (list only bootable partitions)\n"
  172. "part start <interface> <dev> <part> <varname>\n"
  173. " - set environment variable to the start of the partition (in blocks)\n"
  174. " part can be either partition number or partition name\n"
  175. "part size <interface> <dev> <part> <varname>\n"
  176. " - set environment variable to the size of the partition (in blocks)\n"
  177. " part can be either partition number or partition name"
  178. );