+++ /dev/null
-/*
- main.c (15.08.10)
- Creates exFAT file system.
-
- Free exFAT implementation.
- Copyright (C) 2011-2018 Andrew Nayenko
-
- 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, write to the Free Software Foundation, Inc.,
- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
-*/
-
-#include "mkexfat.h"
-#include "vbr.h"
-#include "fat.h"
-#include "cbm.h"
-#include "uct.h"
-#include "rootdir.h"
-#include <exfat.h>
-#include <sys/types.h>
-#include <sys/time.h>
-#include <unistd.h>
-#include <inttypes.h>
-#include <stdio.h>
-#include <string.h>
-#include <limits.h>
-
-const struct fs_object* objects[] =
-{
- &vbr,
- &vbr,
- &fat,
- /* clusters heap */
- &cbm,
- &uct,
- &rootdir,
- NULL,
-};
-
-static struct
-{
- int sector_bits;
- int spc_bits;
- off_t volume_size;
- le16_t volume_label[EXFAT_ENAME_MAX + 1];
- uint32_t volume_serial;
- uint64_t first_sector;
-}
-param;
-
-int get_sector_bits(void)
-{
- return param.sector_bits;
-}
-
-int get_spc_bits(void)
-{
- return param.spc_bits;
-}
-
-off_t get_volume_size(void)
-{
- return param.volume_size;
-}
-
-const le16_t* get_volume_label(void)
-{
- return param.volume_label;
-}
-
-uint32_t get_volume_serial(void)
-{
- return param.volume_serial;
-}
-
-uint64_t get_first_sector(void)
-{
- return param.first_sector;
-}
-
-int get_sector_size(void)
-{
- return 1 << get_sector_bits();
-}
-
-int get_cluster_size(void)
-{
- return get_sector_size() << get_spc_bits();
-}
-
-static int setup_spc_bits(int sector_bits, int user_defined, off_t volume_size)
-{
- int i;
-
- if (user_defined != -1)
- {
- off_t cluster_size = 1 << sector_bits << user_defined;
- if (volume_size / cluster_size > EXFAT_LAST_DATA_CLUSTER)
- {
- struct exfat_human_bytes chb, vhb;
-
- exfat_humanize_bytes(cluster_size, &chb);
- exfat_humanize_bytes(volume_size, &vhb);
- exfat_error("cluster size %"PRIu64" %s is too small for "
- "%"PRIu64" %s volume, try -s %d",
- chb.value, chb.unit,
- vhb.value, vhb.unit,
- 1 << setup_spc_bits(sector_bits, -1, volume_size));
- return -1;
- }
- return user_defined;
- }
-
- if (volume_size < 256LL * 1024 * 1024)
- return MAX(0, 12 - sector_bits); /* 4 KB */
- if (volume_size < 32LL * 1024 * 1024 * 1024)
- return MAX(0, 15 - sector_bits); /* 32 KB */
-
- for (i = 17; ; i++) /* 128 KB or more */
- if (DIV_ROUND_UP(volume_size, 1 << i) <= EXFAT_LAST_DATA_CLUSTER)
- return MAX(0, i - sector_bits);
-}
-
-static int setup_volume_label(le16_t label[EXFAT_ENAME_MAX + 1], const char* s)
-{
- memset(label, 0, (EXFAT_ENAME_MAX + 1) * sizeof(le16_t));
- if (s == NULL)
- return 0;
- return exfat_utf8_to_utf16(label, s, EXFAT_ENAME_MAX + 1, strlen(s));
-}
-
-static uint32_t setup_volume_serial(uint32_t user_defined)
-{
- struct timeval now;
-
- if (user_defined != 0)
- return user_defined;
-
- if (gettimeofday(&now, NULL) != 0)
- {
- exfat_error("failed to form volume id");
- return 0;
- }
- return (now.tv_sec << 20) | now.tv_usec;
-}
-
-static int setup(struct exfat_dev* dev, int sector_bits, int spc_bits,
- const char* volume_label, uint32_t volume_serial,
- uint64_t first_sector)
-{
- param.sector_bits = sector_bits;
- param.first_sector = first_sector;
- param.volume_size = exfat_get_size(dev);
-
- param.spc_bits = setup_spc_bits(sector_bits, spc_bits, param.volume_size);
- if (param.spc_bits == -1)
- return 1;
-
- if (setup_volume_label(param.volume_label, volume_label) != 0)
- return 1;
-
- param.volume_serial = setup_volume_serial(volume_serial);
- if (param.volume_serial == 0)
- return 1;
-
- return mkfs(dev, param.volume_size);
-}
-
-static int logarithm2(int n)
-{
- size_t i;
-
- for (i = 0; i < sizeof(int) * CHAR_BIT - 1; i++)
- if ((1 << i) == n)
- return i;
- return -1;
-}
-
-static void usage(const char* prog)
-{
- fprintf(stderr, "Usage: %s [-i volume-id] [-n label] "
- "[-p partition-first-sector] "
- "[-s sectors-per-cluster] [-V] <device>\n", prog);
- exit(1);
-}
-
-int main(int argc, char* argv[])
-{
- const char* spec = NULL;
- int opt;
- int spc_bits = -1;
- const char* volume_label = NULL;
- uint32_t volume_serial = 0;
- uint64_t first_sector = 0;
- struct exfat_dev* dev;
-
- printf("mkexfatfs %s\n", VERSION);
-
- while ((opt = getopt(argc, argv, "i:n:p:s:V")) != -1)
- {
- switch (opt)
- {
- case 'i':
- volume_serial = strtol(optarg, NULL, 16);
- break;
- case 'n':
- volume_label = optarg;
- break;
- case 'p':
- first_sector = strtoll(optarg, NULL, 10);
- break;
- case 's':
- spc_bits = logarithm2(atoi(optarg));
- if (spc_bits < 0)
- {
- exfat_error("invalid option value: '%s'", optarg);
- return 1;
- }
- break;
- case 'V':
- puts("Copyright (C) 2011-2018 Andrew Nayenko");
- return 0;
- default:
- usage(argv[0]);
- break;
- }
- }
- if (argc - optind != 1)
- usage(argv[0]);
- spec = argv[optind];
-
- dev = exfat_open(spec, EXFAT_MODE_RW);
- if (dev == NULL)
- return 1;
- if (setup(dev, 9, spc_bits, volume_label, volume_serial,
- first_sector) != 0)
- {
- exfat_close(dev);
- return 1;
- }
- if (exfat_close(dev) != 0)
- return 1;
- printf("File system created successfully.\n");
- return 0;
-}
projects / sven / fuse-exfat.git / blobdiff