#include <errno.h>
#include <unistd.h>
#include <sys/types.h>
-#define _XOPEN_SOURCE /* for tzset() in Linux */
-#include <time.h>
static uint64_t rootdir_size(const struct exfat* ef)
{
ef->noatime = match_option(options, "noatime");
}
-static int verify_vbr_checksum(void* sector, off_t sector_size, int fd)
+static int verify_vbr_checksum(struct exfat_dev* dev, void* sector,
+ off_t sector_size)
{
uint32_t vbr_checksum;
int i;
- exfat_read_raw(sector, sector_size, 0, fd);
+ exfat_pread(dev, sector, sector_size, 0);
vbr_checksum = exfat_vbr_start_checksum(sector, sector_size);
for (i = 1; i < 11; i++)
{
- exfat_read_raw(sector, sector_size, i * sector_size, fd);
+ exfat_pread(dev, sector, sector_size, i * sector_size);
vbr_checksum = exfat_vbr_add_checksum(sector, sector_size,
vbr_checksum);
}
- exfat_read_raw(sector, sector_size, i * sector_size, fd);
+ exfat_pread(dev, sector, sector_size, i * sector_size);
for (i = 0; i < sector_size / sizeof(vbr_checksum); i++)
if (le32_to_cpu(((const le32_t*) sector)[i]) != vbr_checksum)
{
static int commit_super_block(const struct exfat* ef)
{
- exfat_write_raw(ef->sb, sizeof(struct exfat_super_block), 0, ef->fd);
- if (fsync(ef->fd) < 0)
- {
- exfat_error("fsync failed");
- return 1;
- }
- return 0;
+ exfat_pwrite(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0);
+ return exfat_fsync(ef->dev);
}
static int prepare_super_block(const struct exfat* ef)
{
int rc;
- tzset();
+ exfat_tzset();
memset(ef, 0, sizeof(struct exfat));
parse_options(ef, options);
- ef->fd = exfat_open(spec, ef->ro);
- if (ef->fd < 0)
+ ef->dev = exfat_open(spec, ef->ro);
+ if (ef->dev == NULL)
{
if (ef->ro || !match_option(options, "ro_fallback"))
return -EIO;
- ef->fd = exfat_open(spec, 1);
- if (ef->fd < 0)
+ ef->dev = exfat_open(spec, 1);
+ if (ef->dev == NULL)
return -EIO;
exfat_warn("device is write-protected, mounting read-only");
ef->ro_fallback = ef->ro = 1;
ef->sb = malloc(sizeof(struct exfat_super_block));
if (ef->sb == NULL)
{
- close(ef->fd);
+ exfat_close(ef->dev);
exfat_error("failed to allocate memory for the super block");
return -ENOMEM;
}
memset(ef->sb, 0, sizeof(struct exfat_super_block));
- exfat_read_raw(ef->sb, sizeof(struct exfat_super_block), 0, ef->fd);
+ exfat_pread(ef->dev, ef->sb, sizeof(struct exfat_super_block), 0);
if (memcmp(ef->sb->oem_name, "EXFAT ", 8) != 0)
{
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
exfat_error("exFAT file system is not found");
return -EIO;
}
if (ef->sb->version.major != 1 || ef->sb->version.minor != 0)
{
- close(ef->fd);
+ exfat_close(ef->dev);
exfat_error("unsupported exFAT version: %hhu.%hhu",
ef->sb->version.major, ef->sb->version.minor);
free(ef->sb);
}
if (ef->sb->fat_count != 1)
{
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
exfat_error("unsupported FAT count: %hhu", ef->sb->fat_count);
return -EIO;
/* officially exFAT supports cluster size up to 32 MB */
if ((int) ef->sb->sector_bits + (int) ef->sb->spc_bits > 25)
{
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
exfat_error("too big cluster size: 2^%d",
(int) ef->sb->sector_bits + (int) ef->sb->spc_bits);
ef->zero_cluster = malloc(CLUSTER_SIZE(*ef->sb));
if (ef->zero_cluster == NULL)
{
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
exfat_error("failed to allocate zero sector");
return -ENOMEM;
}
/* use zero_cluster as a temporary buffer for VBR checksum verification */
- if (verify_vbr_checksum(ef->zero_cluster, SECTOR_SIZE(*ef->sb),
- ef->fd) != 0)
+ if (verify_vbr_checksum(ef->dev, ef->zero_cluster,
+ SECTOR_SIZE(*ef->sb)) != 0)
{
free(ef->zero_cluster);
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
return -EIO;
}
if (ef->root == NULL)
{
free(ef->zero_cluster);
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
exfat_error("failed to allocate root node");
return -ENOMEM;
exfat_reset_cache(ef);
free(ef->root);
free(ef->zero_cluster);
- close(ef->fd);
+ exfat_close(ef->dev);
free(ef->sb);
return -EIO;
}
free(ef->root);
ef->root = NULL;
finalize_super_block(ef);
- if (close(ef->fd) < 0) /* close descriptor immediately after fsync */
- exfat_error("close failed");
- ef->fd = 0;
+ exfat_close(ef->dev); /* close descriptor immediately after fsync */
+ ef->dev = NULL;
free(ef->zero_cluster);
ef->zero_cluster = NULL;
free(ef->cmap.chunk);