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/*
* Copyright (c) 2018, 2019 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 {
RB_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_FILEIDX_MODE_FILE_TYPE 0x000f
#define GOT_FILEIDX_MODE_FILE_TYPE_ONDISK 0x0003
#define GOT_FILEIDX_MODE_FILE_TYPE_STAGED 0x000c
#define GOT_FILEIDX_MODE_FILE_TYPE_STAGED_SHIFT 2
#define GOT_FILEIDX_MODE_REGULAR_FILE 1
#define GOT_FILEIDX_MODE_SYMLINK 2
#define GOT_FILEIDX_MODE_BAD_SYMLINK 3
#define GOT_FILEIDX_MODE_PERMS 0xfff0
#define GOT_FILEIDX_MODE_PERMS_SHIFT 4
/*
* id of corresponding blob in repository. only the actual
* hash is written to the disk.
*/
struct got_object_id blob;
/*
* id of corresponding base commit in repository. only the
* actual hash is written to the disk.
*/
struct got_object_id commit;
uint32_t flags;
/*
* UNIX-style path, relative to work tree root.
* Variable length, and NUL-padded to a multiple of 8 on disk.
*/
char *path;
/*
* (since GOT_FILE_INDEX_VERSION 2)
* Hash of staged blob in repository if stage equals either
* GOT_FILEIDX_STAGE_MODIFY or GOT_FILEIDX_STAGE_ADD.
* Otherwise, this field is not written to disk.
* Only the actual hash is written to the disk.
*/
struct got_object_id staged_blob;
};
/* Modifications explicitly staged for commit. */
#define GOT_FILEIDX_STAGE_NONE 0
#define GOT_FILEIDX_STAGE_MODIFY 1
#define GOT_FILEIDX_STAGE_ADD 2
#define GOT_FILEIDX_STAGE_DELETE 3
struct got_fileindex;
RB_HEAD(got_fileindex_tree, got_fileindex_entry);
size_t got_fileindex_entry_path_len(const struct got_fileindex_entry *);
static inline int
got_fileindex_cmp(const struct got_fileindex_entry *e1,
const struct got_fileindex_entry *e2)
{
return got_path_cmp(e1->path, e2->path,
got_fileindex_entry_path_len(e1),
got_fileindex_entry_path_len(e2));
}
RB_PROTOTYPE(got_fileindex_tree, got_fileindex_entry, entry, got_fileindex_cmp);
/* On-disk file index header structure. */
struct got_fileindex_hdr {
uint32_t signature; /* big-endian */
#define GOT_FILE_INDEX_SIGNATURE 0x676f7449 /* 'g', 'o', 't', 'I' */
uint32_t version; /* big-endian */
#define GOT_FILE_INDEX_VERSION 3
uint32_t nentries; /* big-endian */
uint32_t algo; /* big-endian -- since v3 */
/* list of concatenated fileindex entries */
/*
* checksum of above on-disk data, the actual length of the
* hash depends on the algorithm.
*/
uint8_t hash[GOT_HASH_DIGEST_MAXLEN];
};
mode_t got_fileindex_entry_perms_get(struct got_fileindex_entry *);
uint16_t got_fileindex_perms_from_st(struct stat *);
mode_t got_fileindex_perms_to_st(struct got_fileindex_entry *);
const struct got_error *got_fileindex_entry_update(struct got_fileindex_entry *,
int, const char *, struct got_object_id *, struct got_object_id *, int);
void got_fileindex_entry_mark_skipped(struct got_fileindex_entry *);
const struct got_error *got_fileindex_entry_alloc(struct got_fileindex_entry **,
const char *);
void got_fileindex_entry_free(struct got_fileindex_entry *);
struct got_fileindex *got_fileindex_alloc(enum got_hash_algorithm);
void got_fileindex_free(struct got_fileindex *);
const struct got_error *got_fileindex_write(struct got_fileindex *, FILE *);
const struct got_error *got_fileindex_entry_add(struct got_fileindex *,
struct got_fileindex_entry *);
void got_fileindex_entry_remove(struct got_fileindex *,
struct got_fileindex_entry *);
struct got_fileindex_entry *got_fileindex_entry_get(struct got_fileindex *,
const char *, size_t);
const struct got_error *got_fileindex_read(struct got_fileindex *, FILE *,
enum got_hash_algorithm);
uint32_t got_fileindex_get_version(struct got_fileindex *);
typedef const struct got_error *(*got_fileindex_cb)(void *,
struct got_fileindex_entry *);
const struct got_error *got_fileindex_for_each_entry_safe(
struct got_fileindex *, got_fileindex_cb cb, void *);
typedef const struct got_error *(*got_fileindex_diff_tree_old_new_cb)(void *,
struct got_fileindex_entry *, struct got_tree_entry *, const char *);
typedef const struct got_error *(*got_fileindex_diff_tree_old_cb)(void *,
struct got_fileindex_entry *, const char *);
typedef const struct got_error *(*got_fileindex_diff_tree_new_cb)(void *,
struct got_tree_entry *, const char *);
struct got_fileindex_diff_tree_cb {
got_fileindex_diff_tree_old_new_cb diff_old_new;
got_fileindex_diff_tree_old_cb diff_old;
got_fileindex_diff_tree_new_cb diff_new;
};
const struct got_error *got_fileindex_diff_tree(struct got_fileindex *,
struct got_tree_object *, const char *, const char *,
struct got_repository *, struct got_fileindex_diff_tree_cb *, void *);
typedef const struct got_error *(*got_fileindex_diff_dir_old_new_cb)(void *,
struct got_fileindex_entry *, struct dirent *, const char *, int);
typedef const struct got_error *(*got_fileindex_diff_dir_old_cb)(void *,
struct got_fileindex_entry *, const char *);
typedef const struct got_error *(*got_fileindex_diff_dir_new_cb)(int *, void *,
struct dirent *, const char *, int);
typedef const struct got_error *(*got_fileindex_diff_dir_traverse)(void *,
const char *, int);
struct got_fileindex_diff_dir_cb {
got_fileindex_diff_dir_old_new_cb diff_old_new;
got_fileindex_diff_dir_old_cb diff_old;
got_fileindex_diff_dir_new_cb diff_new;
got_fileindex_diff_dir_traverse diff_traverse;
};
const struct got_error *got_fileindex_diff_dir(struct got_fileindex *, int,
const char *, const char *, struct got_repository *,
struct got_fileindex_diff_dir_cb *, void *);
int got_fileindex_entry_has_blob(struct got_fileindex_entry *);
int got_fileindex_entry_has_commit(struct got_fileindex_entry *);
int got_fileindex_entry_has_file_on_disk(struct got_fileindex_entry *);
int got_fileindex_entry_was_skipped(struct got_fileindex_entry *);
uint32_t got_fileindex_entry_stage_get(const struct got_fileindex_entry *);
void got_fileindex_entry_stage_set(struct got_fileindex_entry *ie, uint32_t);
int got_fileindex_entry_filetype_get(struct got_fileindex_entry *);
void got_fileindex_entry_filetype_set(struct got_fileindex_entry *, int);
void got_fileindex_entry_staged_filetype_set(struct got_fileindex_entry *, int);
int got_fileindex_entry_staged_filetype_get(struct got_fileindex_entry *);
void got_fileindex_entry_mark_deleted_from_disk(struct got_fileindex_entry *);
/*
* Retrieve staged, blob or commit id from a fileindex entry, and return
* the given object id.
*/
struct got_object_id *got_fileindex_entry_get_staged_blob_id(
struct got_object_id *, struct got_fileindex_entry *);
struct got_object_id *got_fileindex_entry_get_blob_id(struct got_object_id *,
struct got_fileindex_entry *);
struct got_object_id *got_fileindex_entry_get_commit_id(struct got_object_id *,
struct got_fileindex_entry *);
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