a9d0ffbd0d
The next commit will make mode_t 32-bits, ino_t 64-bits, nlink_t 32-bits, and off_t 64-bits. However, in the protocol there is no room for that. When analyzing the usage of these data types we can see that of mode_t we currently use 15 bits and that future flags (if copied from NetBSD) are only of importance to VFS and not to the actual file system on disk. Therefore we can get away with keeping the protocol version of mode_t (pmode_t) 16 bits. At this point it is unlikely that MINIX will support file systems that can hold more than 2^32 files. Keeping the protocol version of ino_t (pino_t) 32-bits and exposing it as 64-bits to the rest of the system is fine. uid_t and gid_t are already 32-bits, but in behind the scenes they're 16-bits. This is sufficient since we don't support uid/gids larger than 2^16-1. off_t will become 64-bits, but the protocol had room reserved for that since it was revised years ago. So to make the difference clear between what the protocol supports and what is exposed to the system, we define protocol version of these data types. Change-Id: Ifb883aafb222142e69d6dcc3049a47170b78b3ee
68 lines
2.3 KiB
C
68 lines
2.3 KiB
C
#include "const.h"
|
|
|
|
struct dir_record {
|
|
u8_t length; /* The length of the record */
|
|
u8_t ext_attr_rec_length;
|
|
u32_t loc_extent_l; /* The same data (in this case loc_extent)is */
|
|
u32_t loc_extent_m; /* saved in two ways. The first puts the le- */
|
|
u32_t data_length_l; /* ast significant byte first, the second */
|
|
u32_t data_length_m; /* does the opposite */
|
|
u8_t rec_date[7]; /* => recording date */
|
|
u8_t file_flags; /* => flags of the file */
|
|
u8_t file_unit_size; /* set of blocks in interleave mode */
|
|
u8_t inter_gap_size; /* gap between file units in interleave mode */
|
|
u32_t vol_seq_number; /* volume sequence number: not used */
|
|
u8_t length_file_id; /* Length name file */
|
|
char file_id[ISO9660_MAX_FILE_ID_LEN]; /* file name */
|
|
struct ext_attr_rec *ext_attr;
|
|
|
|
/* Memory attrs */
|
|
u8_t d_count; /* Count if the dir_record is in use or not */
|
|
pmode_t d_mode; /* file type, protection, etc. */
|
|
/* struct hash_idi_entry *id; */ /* id associated */
|
|
u32_t d_phy_addr; /* physical address of this dir record */
|
|
pino_t d_ino_nr; /* inode number (identical to the address) */
|
|
char d_mountpoint; /* true if mounted on */
|
|
struct dir_record *d_next; /* In case the file consists in more file sections
|
|
this points to the next one */
|
|
struct dir_record *d_prior; /* The same as before, this points to the dir parent */
|
|
u32_t d_file_size; /* Total size of the file */
|
|
|
|
} dir_records[NR_DIR_RECORDS];
|
|
|
|
struct ext_attr_rec {
|
|
u32_t own_id;
|
|
u32_t group_id;
|
|
u16_t permissions;
|
|
char file_cre_date[ISO9660_SIZE_VOL_CRE_DATE];
|
|
char file_mod_date[ISO9660_SIZE_VOL_MOD_DATE];
|
|
char file_exp_date[ISO9660_SIZE_VOL_EXP_DATE];
|
|
char file_eff_date[ISO9660_SIZE_VOL_EFF_DATE];
|
|
u8_t rec_format;
|
|
u8_t rec_attrs;
|
|
u32_t rec_length;
|
|
char system_id[ISO9660_SIZE_SYS_ID];
|
|
char system_use[ISO9660_SIZE_SYSTEM_USE];
|
|
u8_t ext_attr_rec_ver;
|
|
u8_t len_esc_seq;
|
|
|
|
int count;
|
|
} ext_attr_recs[NR_ATTR_RECS];
|
|
|
|
#define D_DIRECTORY 0x2
|
|
#define D_TYPE 0x8E
|
|
|
|
/* Vector with all the ids of the dir records */
|
|
/* PUBLIC struct hash_idi_entry { */
|
|
/* u32_t h_phy_addr; */
|
|
/* struct dir_record *h_dir_record; */
|
|
/* } hash_idi[NR_ID_INODES]; */
|
|
|
|
/* PUBLIC int size_hash_idi; */
|
|
|
|
/* #define ID_DIR_RECORD(id) id - hash_idi + 1 */
|
|
#define ID_DIR_RECORD(dir) dir->d_ino_nr
|
|
|
|
/* #define ASSIGN_ID 1 */
|
|
/* #define NOT_ASSIGN_ID 0 */
|