text: /**
   * f2fs_format.c
   *
   * Copyright (c) 2012 Samsung Electronics Co., Ltd.
   *             http://www.samsung.com/
   *
   * Dual licensed under the GPL or LGPL version 2 licenses.
   */
  #define _LARGEFILE64_SOURCE
  
  #include <stdio.h>
  #include <stdlib.h>
  #include <fcntl.h>
  #include <string.h>
  #include <unistd.h>
  #include <sys/stat.h>
  #ifndef ANDROID_WINDOWS_HOST
  #include <sys/mount.h>
  #endif
  #include <time.h>
  #include <uuid/uuid.h>
  #include <errno.h>
  
  #include "config.h"
  #ifdef HAVE_LIBBLKID
  #  include <blkid/blkid.h>
  #endif
  
  #include "f2fs_fs.h"
  #include "f2fs_format_utils.h"
  
  #ifdef WITH_ANDROID
  #include <sparse/sparse.h>
  extern struct sparse_file *f2fs_sparse_file;
  #endif
  
  extern struct f2fs_configuration c;
  static int force_overwrite = 0;
  
  static void mkfs_usage()
  {
  	MSG(0, "\nUsage: mkfs.f2fs [options] device [sectors]\n");
  	MSG(0, "[options]:\n");
  	MSG(0, "  -a heap-based allocation [default:0]\n");
  	MSG(0, "  -c [device path] up to 7 devices excepts meta device\n");
  	MSG(0, "  -d debug level [default:0]\n");
  	MSG(0, "  -e [cold file ext list] e.g. \"mp3,gif,mov\"\n");
  	MSG(0, "  -E [hot file ext list] e.g. \"db\"\n");
  	MSG(0, "  -f force overwrite the exist filesystem\n");
  	MSG(0, "  -i extended node bitmap, node ratio is 20%% by default\n");
  	MSG(0, "  -l label\n");
  	MSG(0, "  -m support zoned block device [default:0]\n");
  	MSG(0, "  -o overprovision ratio [default:5]\n");
  	MSG(0, "  -O [feature list] e.g. \"encrypt\"\n");
  	MSG(0, "  -q quiet mode\n");
  	MSG(0, "  -s # of segments per section [default:1]\n");
  	MSG(0, "  -S sparse mode\n");
  	MSG(0, "  -t 0: nodiscard, 1: discard [default:1]\n");
  	MSG(0, "  -w wanted sector size\n");
  	MSG(0, "  -z # of sections per zone [default:1]\n");
  	MSG(0, "sectors: number of sectors. [default: determined by device size]\n");
  	exit(1);
  }
  
  static void f2fs_show_info()
  {
  	MSG(0, "\n\tF2FS-tools: mkfs.f2fs Ver: %s (%s)\n\n",
  				F2FS_TOOLS_VERSION,
  				F2FS_TOOLS_DATE);
  	if (c.heap == 0)
  		MSG(0, "Info: Disable heap-based policy\n");
  
  	MSG(0, "Info: Debug level = %d\n", c.dbg_lv);
  	if (c.extension_list[0])
  		MSG(0, "Info: Add new cold file extension list\n");
  	if (c.extension_list[1])
  		MSG(0, "Info: Add new hot file extension list\n");
  
  	if (c.vol_label)
  		MSG(0, "Info: Label = %s\n", c.vol_label);
  	MSG(0, "Info: Trim is %s\n", c.trim ? "enabled": "disabled");
  }
  
  static void parse_feature(const char *features)
  {
  	while (*features == ' ')
  		features++;
  	if (!strcmp(features, "encrypt")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_ENCRYPT);
  	} else if (!strcmp(features, "verity")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_VERITY);
  	} else if (!strcmp(features, "extra_attr")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR);
  	} else if (!strcmp(features, "project_quota")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_PRJQUOTA);
  	} else if (!strcmp(features, "inode_checksum")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM);
  	} else if (!strcmp(features, "flexible_inline_xattr")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_FLEXIBLE_INLINE_XATTR);
  	} else if (!strcmp(features, "quota")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_QUOTA_INO);
  	} else if (!strcmp(features, "inode_crtime")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_INODE_CRTIME);
  	} else if (!strcmp(features, "lost_found")) {
  		c.feature |= cpu_to_le32(F2FS_FEATURE_LOST_FOUND);
  	} else {
  		MSG(0, "Error: Wrong features\n");
  		mkfs_usage();
  	}
  }
  
  static void f2fs_parse_options(int argc, char *argv[])
  {
  	static const char *option_string = "qa:c:d:e:E:il:mo:O:s:S:z:t:fw:";
  	int32_t option=0;
  
  	while ((option = getopt(argc,argv,option_string)) != EOF) {
  		switch (option) {
  		case 'q':
  			c.dbg_lv = -1;
  			break;
  		case 'a':
  			c.heap = atoi(optarg);
  			break;
  		case 'c':
  			if (c.ndevs >= MAX_DEVICES) {
  				MSG(0, "Error: Too many devices\n");
  				mkfs_usage();
  			}
  
  			if (strlen(optarg) > MAX_PATH_LEN) {
  				MSG(0, "Error: device path should be less than "
  					"%d characters\n", MAX_PATH_LEN);
  				mkfs_usage();
  			}
  			c.devices[c.ndevs++].path = strdup(optarg);
  			break;
  		case 'd':
  			c.dbg_lv = atoi(optarg);
  			break;
  		case 'e':
  			c.extension_list[0] = strdup(optarg);
  			break;
  		case 'E':
  			c.extension_list[1] = strdup(optarg);
  			break;
  		case 'i':
  			c.large_nat_bitmap = 1;
  			break;
  		case 'l':		/*v: volume label */
  			if (strlen(optarg) > 512) {
  				MSG(0, "Error: Volume Label should be less than "
  						"512 characters\n");
  				mkfs_usage();
  			}
  			c.vol_label = optarg;
  			break;
  		case 'm':
  			c.zoned_mode = 1;
  			break;
  		case 'o':
  			c.overprovision = atof(optarg);
  			break;
  		case 'O':
  			parse_feature(optarg);
  			break;
  		case 's':
  			c.segs_per_sec = atoi(optarg);
  			break;
  		case 'S':
  			c.device_size = atoll(optarg);
  			c.device_size &= (~((u_int64_t)(F2FS_BLKSIZE - 1)));
  			c.sparse_mode = 1;
  			break;
  		case 'z':
  			c.secs_per_zone = atoi(optarg);
  			break;
  		case 't':
  			c.trim = atoi(optarg);
  			break;
  		case 'f':
  			force_overwrite = 1;
  			break;
  		case 'w':
  			c.wanted_sector_size = atoi(optarg);
  			break;
  		default:
  			MSG(0, "\tError: Unknown option %c\n",option);
  			mkfs_usage();
  			break;
  		}
  	}
  
  	if (!(c.feature & cpu_to_le32(F2FS_FEATURE_EXTRA_ATTR))) {
  		if (c.feature & cpu_to_le32(F2FS_FEATURE_PRJQUOTA)) {
  			MSG(0, "\tInfo: project quota feature should always been"
  				"enabled with extra attr feature\n");
  			exit(1);
  		}
  		if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CHKSUM)) {
  			MSG(0, "\tInfo: inode checksum feature should always been"
  				"enabled with extra attr feature\n");
  			exit(1);
  		}
  		if (c.feature & cpu_to_le32(F2FS_FEATURE_FLEXIBLE_INLINE_XATTR)) {
  			MSG(0, "\tInfo: flexible inline xattr feature should always been"
  				"enabled with extra attr feature\n");
  			exit(1);
  		}
  		if (c.feature & cpu_to_le32(F2FS_FEATURE_INODE_CRTIME)) {
  			MSG(0, "\tInfo: inode crtime feature should always been"
  				"enabled with extra attr feature\n");
  			exit(1);
  		}
  	}
  
  	if (optind >= argc) {
  		MSG(0, "\tError: Device not specified\n");
  		mkfs_usage();
  	}
  
  	/* [0] : META, [1 to MAX_DEVICES - 1] : NODE/DATA */
  	c.devices[0].path = strdup(argv[optind]);
  
  	if ((optind + 1) < argc) {
  		if (c.ndevs > 1) {
  			MSG(0, "\tError: Not support custom size on multi-devs.\n");
  			mkfs_usage();
  		}
  		c.wanted_total_sectors = atoll(argv[optind+1]);
  	}
  
  	if (c.sparse_mode)
  		c.trim = 0;
  
  	if (c.zoned_mode)
  		c.feature |= cpu_to_le32(F2FS_FEATURE_BLKZONED);
  }
  
  #ifdef HAVE_LIBBLKID
  static int f2fs_dev_is_overwrite(const char *device)
  {
  	const char	*type;
  	blkid_probe	pr = NULL;
  	int		ret = -1;
  
  	if (!device || !*device)
  		return 0;
  
  	pr = blkid_new_probe_from_filename(device);
  	if (!pr)
  		goto out;
  
  	ret = blkid_probe_enable_partitions(pr, 1);
  	if (ret < 0)
  		goto out;
  
  	ret = blkid_do_fullprobe(pr);
  	if (ret < 0)
  		goto out;
  
  	/*
  	 * Blkid returns 1 for nothing found and 0 when it finds a signature,
  	 * but we want the exact opposite, so reverse the return value here.
  	 *
  	 * In addition print some useful diagnostics about what actually is
  	 * on the device.
  	 */
  	if (ret) {
  		ret = 0;
  		goto out;
  	}
  
  	if (!blkid_probe_lookup_value(pr, "TYPE", &type, NULL)) {
  		MSG(0, "\t%s appears to contain an existing filesystem (%s).\n",
  			device, type);
  	} else if (!blkid_probe_lookup_value(pr, "PTTYPE", &type, NULL)) {
  		MSG(0, "\t%s appears to contain a partition table (%s).\n",
  			device, type);
  	} else {
  		MSG(0, "\t%s appears to contain something weird according to blkid\n",
  			device);
  	}
  	ret = 1;
  out:
  	if (pr)
  		blkid_free_probe(pr);
  	if (ret == -1)
  		MSG(0, "\tprobe of %s failed, cannot detect existing filesystem.\n",
  			device);
  	return ret;
  }
  
  static int f2fs_check_overwrite(void)
  {
  	int i;
  
  	for (i = 0; i < c.ndevs; i++)
  		if (f2fs_dev_is_overwrite((char *)c.devices[i].path))
  			return -1;
  	return 0;
  }
  
  #else
  
  static int f2fs_check_overwrite(void)
  {
  	return 0;
  }
  
  #endif /* HAVE_LIBBLKID */
  
  int main(int argc, char *argv[])
  {
  	f2fs_init_configuration();
  
  	f2fs_parse_options(argc, argv);
  
  	f2fs_show_info();
  
  	c.func = MKFS;
  
  	if (!force_overwrite && f2fs_check_overwrite()) {
  		MSG(0, "\tUse the -f option to force overwrite.\n");
  		return -1;
  	}
  
  	if (f2fs_devs_are_umounted() < 0) {
  		if (errno != EBUSY)
  			MSG(0, "\tError: Not available on mounted device!\n");
  		return -1;
  	}
  
  	if (f2fs_get_device_info() < 0)
  		return -1;
  
  	/*
  	 * Some options are mandatory for host-managed
  	 * zoned block devices.
  	 */
  	if (c.zoned_model == F2FS_ZONED_HM && !c.zoned_mode) {
  		MSG(0, "\tError: zoned block device feature is required\n");
  		return -1;
  	}
  
  	if (c.zoned_mode && !c.trim) {
  		MSG(0, "\tError: Trim is required for zoned block devices\n");
  		return -1;
  	}
  
  	if (c.sparse_mode) {
  		if (f2fs_init_sparse_file())
  			return -1;
  	}
  
  	if (f2fs_format_device() < 0)
  		return -1;
  
  	if (f2fs_finalize_device() < 0)
  		return -1;
  
  	MSG(0, "Info: format successful\n");
  
  	return 0;
  }
  