/*
* Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
* State information for a tracked file in a work tree.
* When written to disk, multi-byte fields are written in big-endian.
* Some fields are based on results from stat(2). These are only used in
* order to detect modifications made to on-disk files, they are never
* applied back to the filesystem.
*/
struct got_fileindex_entry {
TAILQ_ENTRY(, got_fileindex_entry) entry;
uint64_t ctime_sec;
uint64_t ctime_nsec;
uint64_t mtime_sec;
uint64_t mtime_nsec;
uint32_t uid;
uint32_t gid;
/*
* On-disk size is truncated to the lower 32 bits.
* The value is only used to check for modifications anyway.
*/
uint32_t size;
uint16_t mode;
#define GOT_INDEX_ENTRY_MODE_OBJ_TYPE 0x000f
#define GOT_INDEX_ENTRY_MODE_PERMS 0xff10
/* SHA1 of corresponding blob in repository. */
uint8_t blob_sha1[SHA1_DIGEST_LENGTH];
uint32_t flags;
#define GOT_INDEX_ENTRY_F_PATH_LEN 0x00000fff
#define GOT_INDEX_ENTRY_F_STAGE 0x00003000
#define GOT_INDEX_ENTRY_F_EXTENDED 0x00004000
#define GOT_INDEX_ENTRY_F_ASSUME_VALID 0x00008000
/*
* UNIX-style path, relative to work tree root.
* Variable length, and NUL-padded to a multiple of 8 on disk.
*/
const char *path;
};
/* "Stages" of a file afflicted by a 3-way merge conflict. */
#define GOT_INDEX_ENTRY_STAGE_MERGED 0
#define GOT_INDEX_ENTRY_STAGE_ANCESTOR 1
#define GOT_INDEX_ENTRY_STAGE_OURS 2
#define GOT_INDEX_ENTRY_STAGE_THEIRS 3
/* On-disk file index header structure. */
struct got_fileindex_hdr {
uint32_t signature; /* big-endian on disk */
uint32_t version; /* big-endian on disk */
uint32_t nentries; /* big-endian on disk */
TAILQ_HEAD(, got_fileindex_entry) entries;
uint8_t sha1[SHA1_DIGEST_LENGTH]; /* checksum of above on-disk data */
};
