--- /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