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util-linux/include/pt-sun.h

90 lines
3.0 KiB

#ifndef UTIL_LINUX_PT_SUN_H
#define UTIL_LINUX_PT_SUN_H
#include <stdint.h>
#define SUN_LABEL_MAGIC 0xDABE
/* Supported VTOC setting */
#define SUN_VTOC_SANITY 0x600DDEEE /* magic number */
#define SUN_VTOC_VERSION 1
#define SUN_MAXPARTITIONS 8
struct sun_disklabel {
unsigned char label_id[128]; /* Informative text string */
struct sun_vtoc {
uint32_t version; /* version */
char volume_id[8];/* volume name */
uint16_t nparts; /* num of partitions */
struct sun_info { /* partition information */
uint16_t id; /* SUN_TAG_* */
uint16_t flags; /* SUN_FLAG_* */
} __attribute__ ((packed)) infos[8];
uint16_t padding; /* padding */
uint32_t bootinfo[3]; /* info needed by mboot */
uint32_t sanity; /* magic number */
uint32_t reserved[10]; /* padding */
uint32_t timestamp[8]; /* partition timestamp */
} __attribute__ ((packed)) vtoc;
uint32_t write_reinstruct; /* sectors to skip, writes */
uint32_t read_reinstruct; /* sectors to skip, reads */
unsigned char spare[148]; /* padding */
uint16_t rpm; /* disk rotational speed */
uint16_t pcyl; /* physical cylinder count */
uint16_t apc; /* extra sects per cylinder */
uint16_t obs1;
uint16_t obs2;
uint16_t intrlv; /* interleave factor */
uint16_t ncyl; /* data cylinder count */
uint16_t acyl; /* alt. cylinder count */
uint16_t nhead; /* tracks per cylinder <---- */
uint16_t nsect; /* sectors per track <---- */
uint16_t obs3;
uint16_t obs4;
struct sun_partition { /* partitions */
uint32_t start_cylinder;
uint32_t num_sectors;
} __attribute__ ((packed)) partitions[8];
uint16_t magic; /* magic number */
uint16_t csum; /* label xor'd checksum */
} __attribute__ ((packed));
#define SUN_TAG_UNASSIGNED 0x00 /* Unassigned partition */
#define SUN_TAG_BOOT 0x01 /* Boot partition */
#define SUN_TAG_ROOT 0x02 /* Root filesystem */
#define SUN_TAG_SWAP 0x03 /* Swap partition */
#define SUN_TAG_USR 0x04 /* /usr filesystem */
#define SUN_TAG_WHOLEDISK 0x05 /* Full-disk slice */
#define SUN_TAG_STAND 0x06 /* Stand partition */
#define SUN_TAG_VAR 0x07 /* /var filesystem */
#define SUN_TAG_HOME 0x08 /* /home filesystem */
#define SUN_TAG_ALTSCTR 0x09 /* Alt sector partition */
#define SUN_TAG_CACHE 0x0a /* Cachefs partition */
#define SUN_TAG_RESERVED 0x0b /* SMI reserved data */
#define SUN_TAG_LINUX_SWAP 0x82 /* Linux SWAP */
#define SUN_TAG_LINUX_NATIVE 0x83 /* Linux filesystem */
#define SUN_TAG_LINUX_LVM 0x8e /* Linux LVM */
#define SUN_TAG_LINUX_RAID 0xfd /* LInux RAID */
#define SUN_FLAG_UNMNT 0x01 /* Unmountable partition*/
#define SUN_FLAG_RONLY 0x10 /* Read only */
static inline uint16_t sun_pt_checksum(const struct sun_disklabel *label)
{
const uint16_t *ptr = ((const uint16_t *) (label + 1)) - 1;
uint16_t sum;
for (sum = 0; ptr >= ((const uint16_t *) label);)
sum ^= *ptr--;
return sum;
}
#endif /* UTIL_LINUX_PT_SUN_H */