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fat32_get_free_count() and fat32_get_next_free() - code style

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This commit is contained in:
Christophe Grenier 2013-12-08 14:40:15 +01:00
parent 1398b863c2
commit ccc47d5bf2
2 changed files with 14 additions and 2 deletions
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6
src/fat.c
View file

@ -747,12 +747,14 @@ int comp_FAT(disk_t *disk, const partition_t *partition, const unsigned long int
unsigned long int fat32_get_free_count(const unsigned char *boot_fat32, const unsigned int sector_size)
{
return (boot_fat32[sector_size+0x1E8+3]<<24)+(boot_fat32[sector_size+0x1E8+2]<<16)+(boot_fat32[sector_size+0x1E8+1]<<8)+boot_fat32[sector_size+0x1E8];
const struct fat_fsinfo *fsinfo=(const struct fat_fsinfo *)&boot_fat32[sector_size];
return le32(fsinfo->freecnt);
}
unsigned long int fat32_get_next_free(const unsigned char *boot_fat32, const unsigned int sector_size)
{
return (boot_fat32[sector_size+0x1EC+3]<<24)+(boot_fat32[sector_size+0x1EC+2]<<16)+(boot_fat32[sector_size+0x1EC+1]<<8)+boot_fat32[sector_size+0x1EC];
const struct fat_fsinfo *fsinfo=(const struct fat_fsinfo *)&boot_fat32[sector_size];
return le32(fsinfo->nextfree);
}
int recover_FAT(disk_t *disk_car, const struct fat_boot_sector*fat_header, partition_t *partition, const int verbose, const int dump_ind, const int backup)

10
src/fat.h
View file

@ -75,6 +75,16 @@ struct fat_boot_sector {
uint16_t marker;
} __attribute__ ((__packed__));
struct fat_fsinfo {
uint32_t leadsig; /* 0x41615252 */
uint8_t reserved1[480];
uint32_t strucsig; /* 0x61417272 */
uint32_t freecnt; /* free clusters 0xfffffffff if unknown */
uint32_t nextfree; /* next free cluster */
uint8_t reserved3[12];
uint32_t magic3; /* 0xAA550000 */
} __attribute__ ((__packed__));
struct msdos_dir_entry {
int8_t name[8],ext[3]; /* 00 name and extension */
uint8_t attr; /* 0B attribute bits */