static int commit_super_block(const struct exfat* ef)
{
if (exfat_pwrite(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0) < 0)
{
exfat_error("failed to write super block");
return 1;
}
return exfat_fsync(ef->dev);
}
ssize_t exfat_generic_pread(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off64_t offset)
{
cluster_t cluster;
char* bufp = buffer;
off64_t lsize, loffset, remainder;
if (offset >= node->size)
return 0;
if (size == 0)
return 0;
cluster = exfat_advance_cluster(ef, node, offset / CLUSTER_SIZE(*ef->sb));
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while reading", cluster);
return -1;
}
loffset = offset % CLUSTER_SIZE(*ef->sb);
remainder = MIN(size, node->size - offset);
while (remainder > 0)
{
if (CLUSTER_INVALID(cluster))
{
exfat_error("invalid cluster 0x%x while reading", cluster);
return -1;
}
lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder);
if (exfat_pread(ef->dev, bufp, lsize,
exfat_c2o(ef, cluster) + loffset) < 0)
{
exfat_error("failed to read cluster %#x", cluster);
return -1;
}
bufp += lsize;
loffset = 0;
remainder -= lsize;
cluster = exfat_next_cluster(ef, node, cluster);
}
if (!ef->ro && !ef->noatime)
exfat_update_atime(node);
return MIN(size, node->size - offset) - remainder;
}
static int fuse_exfat_readdir(const char* path, void* buffer,
fuse_fill_dir_t filler, off_t offset, struct fuse_file_info* fi)
{
struct exfat_node* parent;
struct exfat_node* node;
struct exfat_iterator it;
int rc;
char name[UTF8_BYTES(EXFAT_NAME_MAX) + 1];
exfat_debug("[%s] %s", __func__, path);
rc = exfat_lookup(&ef, &parent, path);
if (rc != 0)
return rc;
if (!(parent->flags & EXFAT_ATTRIB_DIR))
{
exfat_put_node(&ef, parent);
exfat_error("'%s' is not a directory (0x%x)", path, parent->flags);
return -ENOTDIR;
}
filler(buffer, ".", NULL, 0);
filler(buffer, "..", NULL, 0);
rc = exfat_opendir(&ef, parent, &it);
if (rc != 0)
{
exfat_put_node(&ef, parent);
exfat_error("failed to open directory '%s'", path);
return rc;
}
while ((node = exfat_readdir(&ef, &it)))
{
exfat_get_name(node, name, sizeof(name) - 1);
exfat_debug("[%s] %s: %s, %"PRId64" bytes, cluster 0x%x", __func__,
name, IS_CONTIGUOUS(*node) ? "contiguous" : "fragmented",
node->size, node->start_cluster);
filler(buffer, name, NULL, 0);
exfat_put_node(&ef, node);
}
exfat_closedir(&ef, &it);
exfat_put_node(&ef, parent);
return 0;
}
static int uct_write(struct exfat_dev* dev)
{
if (exfat_write(dev, upcase_table, sizeof(upcase_table)) < 0)
{
exfat_error("failed to write upcase table of %zu bytes",
sizeof(upcase_table));
return 1;
}
return 0;
}
int exfat_close(struct exfat_dev* dev)
{
int rc = 0;
#ifdef USE_UBLIO
if (ublio_close(dev->ufh) != 0)
{
exfat_error("failed to close ublio");
rc = -EIO;
}
#endif
if (close(dev->fd) != 0)
{
exfat_error("failed to close device: %s", strerror(errno));
rc = -EIO;
}
free(dev);
return rc;
}
ssize_t exfat_write(struct exfat* ef, struct exfat_node* node,
const void* buffer, size_t size, off_t offset)
{
cluster_t cluster;
const char* bufp = buffer;
off_t lsize, loffset, remainder;
if (offset + size > node->size)
{
int rc = exfat_truncate(ef, node, offset + size);
if (rc != 0)
return rc;
}
if (size == 0)
return 0;
cluster = exfat_advance_cluster(ef, node, offset / CLUSTER_SIZE(*ef->sb));
if (CLUSTER_INVALID(cluster))
{
exfat_error("got invalid cluster");
return -1;
}
loffset = offset % CLUSTER_SIZE(*ef->sb);
remainder = size;
while (remainder > 0)
{
if (CLUSTER_INVALID(cluster))
{
exfat_error("got invalid cluster");
return -1;
}
lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder);
exfat_write_raw(bufp, lsize, exfat_c2o(ef, cluster) + loffset, ef->fd);
bufp += lsize;
loffset = 0;
remainder -= lsize;
cluster = exfat_next_cluster(ef, node, cluster);
}
exfat_update_mtime(node);
return size - remainder;
}
static cluster_t fat_write_entry(struct exfat_dev* dev, cluster_t cluster,
cluster_t value)
{
le32_t fat_entry = cpu_to_le32(value);
if (exfat_write(dev, &fat_entry, sizeof(fat_entry)) < 0)
{
exfat_error("failed to write FAT entry 0x%x", value);
return 0;
}
return cluster + 1;
}
static struct exfat_node* allocate_node(void)
{
struct exfat_node* node = malloc(sizeof(struct exfat_node));
if (node == NULL)
{
exfat_error("failed to allocate node");
return NULL;
}
memset(node, 0, sizeof(struct exfat_node));
return node;
}
static char* add_fsname_option(char* options, const char* spec)
{
char spec_abs[PATH_MAX];
if (realpath(spec, spec_abs) == NULL)
{
free(options);
exfat_error("failed to get absolute path for `%s'", spec);
return NULL;
}
return add_option(options, "fsname", spec_abs);
}
ssize_t exfat_read(const struct exfat* ef, struct exfat_node* node,
void* buffer, size_t size, off_t offset)
{
cluster_t cluster;
char* bufp = buffer;
off_t lsize, loffset, remainder;
if (offset >= node->size)
return 0;
if (size == 0)
return 0;
cluster = exfat_advance_cluster(ef, node, offset / CLUSTER_SIZE(*ef->sb));
if (CLUSTER_INVALID(cluster))
{
exfat_error("got invalid cluster");
return -1;
}
loffset = offset % CLUSTER_SIZE(*ef->sb);
remainder = MIN(size, node->size - offset);
while (remainder > 0)
{
if (CLUSTER_INVALID(cluster))
{
exfat_error("got invalid cluster");
return -1;
}
lsize = MIN(CLUSTER_SIZE(*ef->sb) - loffset, remainder);
exfat_read_raw(bufp, lsize, exfat_c2o(ef, cluster) + loffset, ef->fd);
bufp += lsize;
loffset = 0;
remainder -= lsize;
cluster = exfat_next_cluster(ef, node, cluster);
}
if (!ef->ro && !ef->noatime)
exfat_update_atime(node);
return size - remainder;
}
int exfat_fsync(struct exfat_dev* dev)
{
#ifdef USE_UBLIO
if (ublio_fsync(dev->ufh) != 0)
#else
if (fsync(dev->fd) != 0)
#endif
{
exfat_error("fsync failed");
return 1;
}
return 0;
}
static int erase_object(struct exfat_dev* dev, const void* block,
size_t block_size, off64_t start, off64_t size)
{
const off64_t block_count = DIV_ROUND_UP(size, block_size);
off64_t i;
if (exfat_seek(dev, start, SEEK_SET) == (off64_t) -1)
{
exfat_error("seek to 0x%"PRIx64" failed", start);
return 1;
}
for (i = 0; i < size; i += block_size)
{
if (exfat_write(dev, block, MIN(size - i, block_size)) < 0)
{
exfat_error("failed to erase block %"PRIu64"/%"PRIu64
" at 0x%"PRIx64, i + 1, block_count, start);
return 1;
}
}
return 0;
}
static int opendir(struct exfat* ef, const struct exfat_node* dir,
struct iterator* it)
{
if (!(dir->flags & EXFAT_ATTRIB_DIR))
exfat_bug("not a directory");
it->cluster = dir->start_cluster;
it->offset = 0;
it->contiguous = IS_CONTIGUOUS(*dir);
it->chunk = malloc(CLUSTER_SIZE(*ef->sb));
if (it->chunk == NULL)
{
exfat_error("out of memory");
return -ENOMEM;
}
if (exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
exfat_c2o(ef, it->cluster)) < 0)
{
exfat_error("failed to read directory cluster %#x", it->cluster);
return -EIO;
}
return 0;
}
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 bool erase_entry(struct exfat* ef, struct exfat_node* node)
{
cluster_t cluster = node->entry_cluster;
off_t offset = node->entry_offset;
int name_entries = DIV_ROUND_UP(utf16_length(node->name), EXFAT_ENAME_MAX);
uint8_t entry_type;
entry_type = EXFAT_ENTRY_FILE & ~EXFAT_ENTRY_VALID;
if (exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset)) < 0)
{
exfat_error("failed to erase meta1 entry");
return false;
}
if (!next_entry(ef, node->parent, &cluster, &offset))
return false;
entry_type = EXFAT_ENTRY_FILE_INFO & ~EXFAT_ENTRY_VALID;
if (exfat_pwrite(ef->dev, &entry_type, 1, co2o(ef, cluster, offset)) < 0)
{
exfat_error("failed to erase meta2 entry");
return false;
}
while (name_entries--)
{
if (!next_entry(ef, node->parent, &cluster, &offset))
return false;
entry_type = EXFAT_ENTRY_FILE_NAME & ~EXFAT_ENTRY_VALID;
if (exfat_pwrite(ef->dev, &entry_type, 1,
co2o(ef, cluster, offset)) < 0)
{
exfat_error("failed to erase name entry");
return false;
}
}
return true;
}
static bool verify_vbr_checksum(struct exfat_dev* dev, void* sector,
fbx_off_t sector_size)
{
uint32_t vbr_checksum;
int i;
if (exfat_pread(dev, sector, sector_size, 0) < 0)
{
exfat_error("failed to read boot sector");
return false;
}
vbr_checksum = exfat_vbr_start_checksum(sector, sector_size);
for (i = 1; i < 11; i++)
{
if (exfat_pread(dev, sector, sector_size, i * sector_size) < 0)
{
exfat_error("failed to read VBR sector");
return false;
}
vbr_checksum = exfat_vbr_add_checksum(sector, sector_size,
vbr_checksum);
}
if (exfat_pread(dev, sector, sector_size, i * sector_size) < 0)
{
exfat_error("failed to read VBR checksum sector");
return false;
}
for (i = 0; i < sector_size / sizeof(vbr_checksum); i++)
if (le32_to_cpu(((const le32_t*) sector)[i]) != vbr_checksum)
{
exfat_error("invalid VBR checksum 0x%x (expected 0x%x)",
le32_to_cpu(((const le32_t*) sector)[i]), vbr_checksum);
return false;
}
return true;
}
int exfat_flush(struct exfat* ef)
{
if (ef->cmap.dirty)
{
if (exfat_pwrite(ef->dev, ef->cmap.chunk,
BMAP_SIZE(ef->cmap.chunk_size),
exfat_c2o(ef, ef->cmap.start_cluster)) < 0)
{
exfat_error("failed to write clusters bitmap");
return -EIO;
}
ef->cmap.dirty = false;
}
return 0;
}
static bool next_entry(struct exfat* ef, const struct exfat_node* parent,
cluster_t* cluster, off_t* offset)
{
*offset += sizeof(struct exfat_entry);
if (*offset % CLUSTER_SIZE(*ef->sb) == 0)
{
*cluster = exfat_next_cluster(ef, parent, *cluster);
if (CLUSTER_INVALID(*cluster))
{
exfat_error("invalid cluster %#x while getting next entry",
*cluster);
return false;
}
}
return true;
}
static char* add_user_option(char* options)
{
struct passwd* pw;
if (getuid() == 0)
return options;
pw = getpwuid(getuid());
if (pw == NULL || pw->pw_name == NULL)
{
free(options);
exfat_error("failed to determine username");
return NULL;
}
return add_option(options, "user", pw->pw_name);
}
static int create(struct exfat_dev* dev)
{
const struct fs_object** pp;
off64_t position = 0;
for (pp = objects; *pp; pp++)
{
position = ROUND_UP(position, (*pp)->get_alignment());
if (exfat_seek(dev, position, SEEK_SET) == (off64_t) -1)
{
exfat_error("seek to 0x%"PRIx64" failed", position);
return 1;
}
if ((*pp)->write(dev) != 0)
return 1;
position += (*pp)->get_size();
}
return 0;
}
static int fetch_next_entry(struct exfat* ef, const struct exfat_node* parent,
struct iterator* it)
{
/* move iterator to the next entry in the directory */
it->offset += sizeof(struct exfat_entry);
/* fetch the next cluster if needed */
if ((it->offset & (CLUSTER_SIZE(*ef->sb) - 1)) == 0)
{
it->cluster = exfat_next_cluster(ef, parent, it->cluster);
if (CLUSTER_INVALID(it->cluster))
{
exfat_error("invalid cluster while reading directory");
return 1;
}
exfat_read_raw(it->chunk, CLUSTER_SIZE(*ef->sb),
exfat_c2o(ef, it->cluster), ef->fd);
}
return 0;
}
static char* add_fsname_option(char* options, const char* spec)
{
/* escaped string cannot be more than twice as big as the original one */
char* escaped = malloc(strlen(spec) * 2 + 1);
if (escaped == NULL)
{
free(options);
exfat_error("failed to allocate escaped string for %s", spec);
return NULL;
}
/* on some platforms (e.g. Android, Solaris) device names can contain
commas */
escape(escaped, spec);
options = add_option(options, "fsname", escaped);
free(escaped);
return options;
}
static bool set_next_cluster(const struct exfat* ef, bool contiguous,
cluster_t current, cluster_t next)
{
loff_t fat_offset;
le32_t next_le32;
if (contiguous)
return true;
fat_offset = s2o(ef, le32_to_cpu(ef->sb->fat_sector_start))
+ current * sizeof(cluster_t);
next_le32 = cpu_to_le32(next);
if (exfat_pwrite(ef->dev, &next_le32, sizeof(next_le32), fat_offset) < 0)
{
exfat_error("failed to write the next cluster %#x after %#x", next,
current);
return false;
}
return true;
}
static cluster_t allocate_cluster(struct exfat* ef, cluster_t hint)
{
cluster_t cluster;
hint -= EXFAT_FIRST_DATA_CLUSTER;
if (hint >= ef->cmap.chunk_size)
hint = 0;
cluster = find_bit_and_set(ef->cmap.chunk, hint, ef->cmap.chunk_size);
if (cluster == EXFAT_CLUSTER_END)
cluster = find_bit_and_set(ef->cmap.chunk, 0, hint);
if (cluster == EXFAT_CLUSTER_END)
{
exfat_error("no free space left");
return EXFAT_CLUSTER_END;
}
ef->cmap.dirty = true;
return cluster;
}
static int check_size(off64_t volume_size)
{
const struct fs_object** pp;
off64_t position = 0;
for (pp = objects; *pp; pp++)
{
position = ROUND_UP(position, (*pp)->get_alignment());
position += (*pp)->get_size();
}
if (position > volume_size)
{
struct exfat_human_bytes vhb;
exfat_humanize_bytes(volume_size, &vhb);
exfat_error("too small device (%"PRIu64" %s)", vhb.value, vhb.unit);
return 1;
}
return 0;
}
static int fetch_next_entry(struct exfat* ef, const struct exfat_node* parent,
struct iterator* it)
{
/* move iterator to the next entry in the directory */
it->offset += sizeof(struct exfat_entry);
/* fetch the next cluster if needed */
if ((it->offset & (CLUSTER_SIZE(*ef->sb) - 1)) == 0)
{
/* reached the end of directory; the caller should check this
condition too */
if (it->offset >= parent->size)
return 0;
it->cluster = exfat_next_cluster(ef, parent, it->cluster);
if (CLUSTER_INVALID(it->cluster))
{
exfat_error("invalid cluster 0x%x while reading directory",
it->cluster);
return 1;
}
exfat_pread(ef->dev, it->chunk, CLUSTER_SIZE(*ef->sb),
exfat_c2o(ef, it->cluster));
}
return 0;
}
static char* add_option(char* options, const char* name, const char* value)
{
size_t size;
if (value)
size = strlen(options) + strlen(name) + strlen(value) + 3;
else
size = strlen(options) + strlen(name) + 2;
options = realloc(options, size);
if (options == NULL)
{
exfat_error("failed to reallocate options string");
return NULL;
}
strcat(options, ",");
strcat(options, name);
if (value)
{
strcat(options, "=");
strcat(options, value);
}
return options;
}
int exfat_flush_node(struct exfat* ef, struct exfat_node* node)
{
cluster_t cluster;
off64_t offset;
off64_t meta1_offset, meta2_offset;
struct exfat_entry_meta1 meta1;
struct exfat_entry_meta2 meta2;
if (!(node->flags & EXFAT_ATTRIB_DIRTY))
return 0; /* no need to flush */
if (ef->ro)
exfat_bug("unable to flush node to read-only FS");
if (node->parent == NULL)
return 0; /* do not flush unlinked node */
cluster = node->entry_cluster;
offset = node->entry_offset;
meta1_offset = co2o(ef, cluster, offset);
next_entry(ef, node->parent, &cluster, &offset);
meta2_offset = co2o(ef, cluster, offset);
if (exfat_pread(ef->dev, &meta1, sizeof(meta1), meta1_offset) < 0)
{
exfat_error("failed to read meta1 entry on flush");
return -EIO;
}
if (meta1.type != EXFAT_ENTRY_FILE)
exfat_bug("invalid type of meta1: 0x%hhx", meta1.type);
meta1.attrib = cpu_to_le16(node->flags);
exfat_unix2exfat(node->mtime, &meta1.mdate, &meta1.mtime, &meta1.mtime_cs);
exfat_unix2exfat(node->atime, &meta1.adate, &meta1.atime, NULL);
if (exfat_pread(ef->dev, &meta2, sizeof(meta2), meta2_offset) < 0)
{
exfat_error("failed to read meta2 entry on flush");
return -EIO;
}
if (meta2.type != EXFAT_ENTRY_FILE_INFO)
exfat_bug("invalid type of meta2: 0x%hhx", meta2.type);
meta2.size = meta2.real_size = cpu_to_le64(node->size);
meta2.start_cluster = cpu_to_le32(node->start_cluster);
meta2.flags = EXFAT_FLAG_ALWAYS1;
/* empty files must not be marked as contiguous */
if (node->size != 0 && IS_CONTIGUOUS(*node))
meta2.flags |= EXFAT_FLAG_CONTIGUOUS;
/* name hash remains unchanged, no need to recalculate it */
meta1.checksum = exfat_calc_checksum(&meta1, &meta2, node->name);
if (exfat_pwrite(ef->dev, &meta1, sizeof(meta1), meta1_offset) < 0)
{
exfat_error("failed to write meta1 entry on flush");
return -EIO;
}
if (exfat_pwrite(ef->dev, &meta2, sizeof(meta2), meta2_offset) < 0)
{
exfat_error("failed to write meta2 entry on flush");
return -EIO;
}
node->flags &= ~EXFAT_ATTRIB_DIRTY;
return 0;
}
int main(int argc, char* argv[])
{
const char* spec = NULL;
char** pp;
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 %u.%u.%u\n",
EXFAT_VERSION_MAJOR, EXFAT_VERSION_MINOR, EXFAT_VERSION_PATCH);
for (pp = argv + 1; *pp; pp++)
{
if (strcmp(*pp, "-s") == 0)
{
pp++;
if (*pp == NULL)
usage(argv[0]);
spc_bits = logarithm2(atoi(*pp));
if (spc_bits < 0)
{
exfat_error("invalid option value: `%s'", *pp);
return 1;
}
}
else if (strcmp(*pp, "-n") == 0)
{
pp++;
if (*pp == NULL)
usage(argv[0]);
volume_label = *pp;
}
else if (strcmp(*pp, "-i") == 0)
{
pp++;
if (*pp == NULL)
usage(argv[0]);
volume_serial = strtol(*pp, NULL, 16);
}
else if (strcmp(*pp, "-p") == 0)
{
pp++;
if (*pp == NULL)
usage(argv[0]);
first_sector = strtoll(*pp, NULL, 10);
}
else if (strcmp(*pp, "-v") == 0)
{
puts("Copyright (C) 2011-2013 Andrew Nayenko");
return 0;
}
else if (spec == NULL)
spec = *pp;
else
usage(argv[0]);
}
if (spec == NULL)
usage(argv[0]);
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;
}
struct exfat_dev* exfat_open(const char* spec, enum exfat_mode mode)
{
struct exfat_dev* dev;
struct stat stbuf;
#ifdef USE_UBLIO
struct ublio_param up;
#endif
dev = malloc(sizeof(struct exfat_dev));
if (dev == NULL)
{
exfat_error("failed to allocate memory for device structure");
return NULL;
}
switch (mode)
{
case EXFAT_MODE_RO:
dev->fd = open_ro(spec);
if (dev->fd == -1)
{
free(dev);
exfat_error("failed to open '%s' in read-only mode: %s", spec,
strerror(errno));
return NULL;
}
dev->mode = EXFAT_MODE_RO;
break;
case EXFAT_MODE_RW:
dev->fd = open_rw(spec);
if (dev->fd == -1)
{
free(dev);
exfat_error("failed to open '%s' in read-write mode: %s", spec,
strerror(errno));
return NULL;
}
dev->mode = EXFAT_MODE_RW;
break;
case EXFAT_MODE_ANY:
dev->fd = open_rw(spec);
if (dev->fd != -1)
{
dev->mode = EXFAT_MODE_RW;
break;
}
dev->fd = open_ro(spec);
if (dev->fd != -1)
{
dev->mode = EXFAT_MODE_RO;
exfat_warn("'%s' is write-protected, mounting read-only", spec);
break;
}
free(dev);
exfat_error("failed to open '%s': %s", spec, strerror(errno));
return NULL;
}
if (fstat(dev->fd, &stbuf) != 0)
{
close(dev->fd);
free(dev);
exfat_error("failed to fstat '%s'", spec);
return NULL;
}
if (!S_ISBLK(stbuf.st_mode) &&
!S_ISCHR(stbuf.st_mode) &&
!S_ISREG(stbuf.st_mode))
{
close(dev->fd);
free(dev);
exfat_error("'%s' is neither a device, nor a regular file", spec);
return NULL;
}
#if defined(__APPLE__)
if (!S_ISREG(stbuf.st_mode))
{
uint32_t block_size = 0;
uint64_t blocks = 0;
if (ioctl(dev->fd, DKIOCGETBLOCKSIZE, &block_size) != 0)
{
close(dev->fd);
free(dev);
exfat_error("failed to get block size");
return NULL;
}
if (ioctl(dev->fd, DKIOCGETBLOCKCOUNT, &blocks) != 0)
{
close(dev->fd);
free(dev);
exfat_error("failed to get blocks count");
return NULL;
}
dev->size = blocks * block_size;
}
else
#elif defined(__OpenBSD__)
if (!S_ISREG(stbuf.st_mode))
{
struct disklabel lab;
struct partition* pp;
char* partition;
if (ioctl(dev->fd, DIOCGDINFO, &lab) == -1)
{
close(dev->fd);
free(dev);
exfat_error("failed to get disklabel");
return NULL;
}
/* Don't need to check that partition letter is valid as we won't get
this far otherwise. */
partition = strchr(spec, '\0') - 1;
pp = &(lab.d_partitions[*partition - 'a']);
dev->size = DL_GETPSIZE(pp) * lab.d_secsize;
if (pp->p_fstype != FS_NTFS)
exfat_warn("partition type is not 0x07 (NTFS/exFAT); "
"you can fix this with fdisk(8)");
}
else
#endif
{
/* works for Linux, FreeBSD, Solaris */
dev->size = exfat_seek(dev, 0, SEEK_END);
if (dev->size <= 0)
{
close(dev->fd);
free(dev);
exfat_error("failed to get size of '%s'", spec);
return NULL;
}
if (exfat_seek(dev, 0, SEEK_SET) == -1)
{
close(dev->fd);
free(dev);
exfat_error("failed to seek to the beginning of '%s'", spec);
return NULL;
}
}
#ifdef USE_UBLIO
memset(&up, 0, sizeof(struct ublio_param));
up.up_blocksize = 256 * 1024;
up.up_items = 64;
up.up_grace = 32;
up.up_priv = &dev->fd;
dev->pos = 0;
dev->ufh = ublio_open(&up);
if (dev->ufh == NULL)
{
close(dev->fd);
free(dev);
exfat_error("failed to initialize ublio");
return NULL;
}
#endif
return dev;
}