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      1 /**
      2  * f2fs_format.c
      3  *
      4  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
      5  *             http://www.samsung.com/
      6  *
      7  * Dual licensed under the GPL or LGPL version 2 licenses.
      8  */
      9 #define _LARGEFILE64_SOURCE
     10 
     11 #include <stdio.h>
     12 #include <stdlib.h>
     13 #include <fcntl.h>
     14 #include <string.h>
     15 #include <unistd.h>
     16 #include <sys/stat.h>
     17 #include <sys/mount.h>
     18 #include <time.h>
     19 //#include <linux/fs.h>
     20 #include <uuid/uuid.h>
     21 
     22 #include "f2fs_fs.h"
     23 #include "f2fs_format_utils.h"
     24 
     25 extern struct f2fs_configuration config;
     26 
     27 static void mkfs_usage()
     28 {
     29 	MSG(0, "\nUsage: mkfs.f2fs [options] device [sectors]\n");
     30 	MSG(0, "[options]:\n");
     31 	MSG(0, "  -a heap-based allocation [default:1]\n");
     32 	MSG(0, "  -d debug level [default:0]\n");
     33 	MSG(0, "  -e [extension list] e.g. \"mp3,gif,mov\"\n");
     34 	MSG(0, "  -l label\n");
     35 	MSG(0, "  -o overprovision ratio [default:5]\n");
     36 	MSG(0, "  -s # of segments per section [default:1]\n");
     37 	MSG(0, "  -z # of sections per zone [default:1]\n");
     38 	MSG(0, "  -t 0: nodiscard, 1: discard [default:1]\n");
     39 	MSG(0, "sectors: number of sectors. [default: determined by device size]\n");
     40 	exit(1);
     41 }
     42 
     43 static void f2fs_parse_options(int argc, char *argv[])
     44 {
     45 	static const char *option_string = "a:d:e:l:o:s:z:t:";
     46 	int32_t option=0;
     47 
     48 	while ((option = getopt(argc,argv,option_string)) != EOF) {
     49 		switch (option) {
     50 		case 'a':
     51 			config.heap = atoi(optarg);
     52 			if (config.heap == 0)
     53 				MSG(0, "Info: Disable heap-based policy\n");
     54 			break;
     55 		case 'd':
     56 			config.dbg_lv = atoi(optarg);
     57 			MSG(0, "Info: Debug level = %d\n", config.dbg_lv);
     58 			break;
     59 		case 'e':
     60 			config.extension_list = strdup(optarg);
     61 			MSG(0, "Info: Add new extension list\n");
     62 			break;
     63 		case 'l':		/*v: volume label */
     64 			if (strlen(optarg) > 512) {
     65 				MSG(0, "Error: Volume Label should be less than\
     66 						512 characters\n");
     67 				mkfs_usage();
     68 			}
     69 			config.vol_label = optarg;
     70 			MSG(0, "Info: Label = %s\n", config.vol_label);
     71 			break;
     72 		case 'o':
     73 			config.overprovision = atoi(optarg);
     74 			MSG(0, "Info: Overprovision ratio = %u%%\n",
     75 								atoi(optarg));
     76 			break;
     77 		case 's':
     78 			config.segs_per_sec = atoi(optarg);
     79 			MSG(0, "Info: Segments per section = %d\n",
     80 								atoi(optarg));
     81 			break;
     82 		case 'z':
     83 			config.secs_per_zone = atoi(optarg);
     84 			MSG(0, "Info: Sections per zone = %d\n", atoi(optarg));
     85 			break;
     86 		case 't':
     87 			config.trim = atoi(optarg);
     88 			MSG(0, "Info: Trim is %s\n", config.trim ? "enabled": "disabled");
     89 			break;
     90 		default:
     91 			MSG(0, "\tError: Unknown option %c\n",option);
     92 			mkfs_usage();
     93 			break;
     94 		}
     95 	}
     96 
     97 	if (optind >= argc) {
     98 		MSG(0, "\tError: Device not specified\n");
     99 		mkfs_usage();
    100 	}
    101 	config.device_name = argv[optind];
    102 
    103 	if ((optind + 1) < argc) {
    104 		/* We have a sector count. */
    105 		config.total_sectors = atoll(argv[optind+1]);
    106 		MSG(0, "\ttotal_sectors=%08"PRIx64" (%s bytes)\n",
    107 				config.total_sectors, argv[optind+1]);
    108 	}
    109 
    110 	config.reserved_segments  =
    111 			(2 * (100 / config.overprovision + 1) + 6)
    112 			* config.segs_per_sec;
    113 }
    114 
    115 int main(int argc, char *argv[])
    116 {
    117 	MSG(0, "\n\tF2FS-tools: mkfs.f2fs Ver: %s (%s)\n\n",
    118 				F2FS_TOOLS_VERSION,
    119 				F2FS_TOOLS_DATE);
    120 	f2fs_init_configuration(&config);
    121 
    122 	f2fs_parse_options(argc, argv);
    123 
    124 	if (f2fs_dev_is_umounted(&config) < 0)
    125 		return -1;
    126 
    127 	if (f2fs_get_device_info(&config) < 0)
    128 		return -1;
    129 
    130 	if (f2fs_format_device() < 0)
    131 		return -1;
    132 
    133 	f2fs_finalize_device(&config);
    134 
    135 	MSG(0, "Info: format successful\n");
    136 
    137 	return 0;
    138 }
    139