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Commit | Line | Data |
---|---|---|
7bd9bcf3 MH |
1 | /* |
2 | * The backend-independent part of the reference module. | |
3 | */ | |
4 | ||
e93fc5d7 | 5 | #include "git-compat-util.h" |
6c6ddf92 | 6 | #include "advice.h" |
b2141fc1 | 7 | #include "config.h" |
32a8f510 | 8 | #include "environment.h" |
7d4558c4 | 9 | #include "hashmap.h" |
f394e093 | 10 | #include "gettext.h" |
41771fa4 | 11 | #include "hex.h" |
697cc8ef | 12 | #include "lockfile.h" |
b05855b5 | 13 | #include "iterator.h" |
85023577 | 14 | #include "refs.h" |
4cb77009 | 15 | #include "refs/refs-internal.h" |
67541597 | 16 | #include "run-command.h" |
5e3aba33 | 17 | #include "hook.h" |
dabab1d6 | 18 | #include "object-name.h" |
a034e910 | 19 | #include "object-store-ll.h" |
cf0adba7 | 20 | #include "object.h" |
c339932b | 21 | #include "path.h" |
cf0adba7 | 22 | #include "tag.h" |
5d0bc90e | 23 | #include "submodule.h" |
17eff96b | 24 | #include "worktree.h" |
dbbcd44f | 25 | #include "strvec.h" |
23a3f0cb | 26 | #include "repository.h" |
e38da487 | 27 | #include "setup.h" |
67541597 | 28 | #include "sigchain.h" |
88c7b4c3 | 29 | #include "date.h" |
b9342b3f | 30 | #include "commit.h" |
dd77d587 | 31 | #include "wildmatch.h" |
3581d793 | 32 | |
3dce444f RS |
33 | /* |
34 | * List of all available backends | |
35 | */ | |
0fcc285c PS |
36 | static const struct ref_storage_be *refs_backends[] = { |
37 | [REF_STORAGE_FORMAT_FILES] = &refs_be_files, | |
57db2a09 | 38 | [REF_STORAGE_FORMAT_REFTABLE] = &refs_be_reftable, |
0fcc285c | 39 | }; |
3dce444f | 40 | |
0fcc285c | 41 | static const struct ref_storage_be *find_ref_storage_backend(unsigned int ref_storage_format) |
3dce444f | 42 | { |
0fcc285c PS |
43 | if (ref_storage_format < ARRAY_SIZE(refs_backends)) |
44 | return refs_backends[ref_storage_format]; | |
3dce444f RS |
45 | return NULL; |
46 | } | |
47 | ||
0fcc285c PS |
48 | unsigned int ref_storage_format_by_name(const char *name) |
49 | { | |
50 | for (unsigned int i = 0; i < ARRAY_SIZE(refs_backends); i++) | |
51 | if (refs_backends[i] && !strcmp(refs_backends[i]->name, name)) | |
52 | return i; | |
53 | return REF_STORAGE_FORMAT_UNKNOWN; | |
54 | } | |
55 | ||
56 | const char *ref_storage_format_to_name(unsigned int ref_storage_format) | |
57 | { | |
58 | const struct ref_storage_be *be = find_ref_storage_backend(ref_storage_format); | |
59 | if (!be) | |
60 | return "unknown"; | |
61 | return be->name; | |
62 | } | |
63 | ||
bc5fd6d3 | 64 | /* |
dde8a902 DT |
65 | * How to handle various characters in refnames: |
66 | * 0: An acceptable character for refs | |
5e650228 JH |
67 | * 1: End-of-component |
68 | * 2: ., look for a preceding . to reject .. in refs | |
69 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 70 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
71 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
72 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
73 | */ |
74 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
75 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
76 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 77 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 79 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
80 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
81 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
82 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
83 | }; |
84 | ||
b9342b3f DS |
85 | struct ref_namespace_info ref_namespace[] = { |
86 | [NAMESPACE_HEAD] = { | |
87 | .ref = "HEAD", | |
88 | .decoration = DECORATION_REF_HEAD, | |
89 | .exact = 1, | |
90 | }, | |
91 | [NAMESPACE_BRANCHES] = { | |
92 | .ref = "refs/heads/", | |
93 | .decoration = DECORATION_REF_LOCAL, | |
94 | }, | |
95 | [NAMESPACE_TAGS] = { | |
96 | .ref = "refs/tags/", | |
97 | .decoration = DECORATION_REF_TAG, | |
98 | }, | |
99 | [NAMESPACE_REMOTE_REFS] = { | |
100 | /* | |
101 | * The default refspec for new remotes copies refs from | |
102 | * refs/heads/ on the remote into refs/remotes/<remote>/. | |
103 | * As such, "refs/remotes/" has special handling. | |
104 | */ | |
105 | .ref = "refs/remotes/", | |
106 | .decoration = DECORATION_REF_REMOTE, | |
107 | }, | |
108 | [NAMESPACE_STASH] = { | |
109 | /* | |
110 | * The single ref "refs/stash" stores the latest stash. | |
111 | * Older stashes can be found in the reflog. | |
112 | */ | |
113 | .ref = "refs/stash", | |
114 | .exact = 1, | |
115 | .decoration = DECORATION_REF_STASH, | |
116 | }, | |
117 | [NAMESPACE_REPLACE] = { | |
118 | /* | |
119 | * This namespace allows Git to act as if one object ID | |
120 | * points to the content of another. Unlike the other | |
121 | * ref namespaces, this one can be changed by the | |
122 | * GIT_REPLACE_REF_BASE environment variable. This | |
123 | * .namespace value will be overwritten in setup_git_env(). | |
124 | */ | |
125 | .ref = "refs/replace/", | |
126 | .decoration = DECORATION_GRAFTED, | |
127 | }, | |
128 | [NAMESPACE_NOTES] = { | |
129 | /* | |
130 | * The refs/notes/commit ref points to the tip of a | |
131 | * parallel commit history that adds metadata to commits | |
132 | * in the normal history. This ref can be overwritten | |
133 | * by the core.notesRef config variable or the | |
134 | * GIT_NOTES_REFS environment variable. | |
135 | */ | |
136 | .ref = "refs/notes/commit", | |
137 | .exact = 1, | |
138 | }, | |
139 | [NAMESPACE_PREFETCH] = { | |
140 | /* | |
141 | * Prefetch refs are written by the background 'fetch' | |
142 | * maintenance task. It allows faster foreground fetches | |
143 | * by advertising these previously-downloaded tips without | |
144 | * updating refs/remotes/ without user intervention. | |
145 | */ | |
146 | .ref = "refs/prefetch/", | |
147 | }, | |
148 | [NAMESPACE_REWRITTEN] = { | |
149 | /* | |
150 | * Rewritten refs are used by the 'label' command in the | |
151 | * sequencer. These are particularly useful during an | |
152 | * interactive rebase that uses the 'merge' command. | |
153 | */ | |
154 | .ref = "refs/rewritten/", | |
155 | }, | |
156 | }; | |
157 | ||
158 | void update_ref_namespace(enum ref_namespace namespace, char *ref) | |
159 | { | |
160 | struct ref_namespace_info *info = &ref_namespace[namespace]; | |
161 | if (info->ref_updated) | |
162 | free(info->ref); | |
163 | info->ref = ref; | |
164 | info->ref_updated = 1; | |
165 | } | |
166 | ||
dde8a902 DT |
167 | /* |
168 | * Try to read one refname component from the front of refname. | |
169 | * Return the length of the component found, or -1 if the component is | |
170 | * not legal. It is legal if it is something reasonable to have under | |
171 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 | 172 | * |
1de16aec | 173 | * - it begins with ".", or |
bc5fd6d3 | 174 | * - it has double dots "..", or |
53a8555e | 175 | * - it has ASCII control characters, or |
cd377f45 JK |
176 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
177 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
178 | * - it ends with a "/", or |
179 | * - it ends with ".lock", or | |
180 | * - it contains a "@{" portion | |
1de16aec NTND |
181 | * |
182 | * When sanitized is not NULL, instead of rejecting the input refname | |
183 | * as an error, try to come up with a usable replacement for the input | |
184 | * refname in it. | |
bc5fd6d3 | 185 | */ |
1de16aec NTND |
186 | static int check_refname_component(const char *refname, int *flags, |
187 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
188 | { |
189 | const char *cp; | |
190 | char last = '\0'; | |
1de16aec NTND |
191 | size_t component_start = 0; /* garbage - not a reasonable initial value */ |
192 | ||
193 | if (sanitized) | |
194 | component_start = sanitized->len; | |
bc5fd6d3 MH |
195 | |
196 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
197 | int ch = *cp & 255; |
198 | unsigned char disp = refname_disposition[ch]; | |
1de16aec NTND |
199 | |
200 | if (sanitized && disp != 1) | |
201 | strbuf_addch(sanitized, ch); | |
202 | ||
dde8a902 | 203 | switch (disp) { |
5e650228 | 204 | case 1: |
dde8a902 | 205 | goto out; |
5e650228 | 206 | case 2: |
1de16aec NTND |
207 | if (last == '.') { /* Refname contains "..". */ |
208 | if (sanitized) | |
209 | /* collapse ".." to single "." */ | |
210 | strbuf_setlen(sanitized, sanitized->len - 1); | |
211 | else | |
212 | return -1; | |
213 | } | |
dde8a902 | 214 | break; |
5e650228 | 215 | case 3: |
1de16aec NTND |
216 | if (last == '@') { /* Refname contains "@{". */ |
217 | if (sanitized) | |
218 | sanitized->buf[sanitized->len-1] = '-'; | |
219 | else | |
220 | return -1; | |
221 | } | |
bc5fd6d3 | 222 | break; |
5e650228 | 223 | case 4: |
1de16aec NTND |
224 | /* forbidden char */ |
225 | if (sanitized) | |
226 | sanitized->buf[sanitized->len-1] = '-'; | |
227 | else | |
228 | return -1; | |
229 | break; | |
cd377f45 | 230 | case 5: |
1de16aec NTND |
231 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) { |
232 | /* refspec can't be a pattern */ | |
233 | if (sanitized) | |
234 | sanitized->buf[sanitized->len-1] = '-'; | |
235 | else | |
236 | return -1; | |
237 | } | |
cd377f45 JK |
238 | |
239 | /* | |
240 | * Unset the pattern flag so that we only accept | |
241 | * a single asterisk for one side of refspec. | |
242 | */ | |
243 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
244 | break; | |
dde8a902 | 245 | } |
bc5fd6d3 MH |
246 | last = ch; |
247 | } | |
dde8a902 | 248 | out: |
bc5fd6d3 | 249 | if (cp == refname) |
dac529e4 | 250 | return 0; /* Component has zero length. */ |
1de16aec NTND |
251 | |
252 | if (refname[0] == '.') { /* Component starts with '.'. */ | |
253 | if (sanitized) | |
254 | sanitized->buf[component_start] = '-'; | |
255 | else | |
256 | return -1; | |
257 | } | |
7108ad23 | 258 | if (cp - refname >= LOCK_SUFFIX_LEN && |
1de16aec NTND |
259 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) { |
260 | if (!sanitized) | |
261 | return -1; | |
262 | /* Refname ends with ".lock". */ | |
263 | while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) { | |
264 | /* try again in case we have .lock.lock */ | |
265 | } | |
266 | } | |
bc5fd6d3 MH |
267 | return cp - refname; |
268 | } | |
269 | ||
1de16aec NTND |
270 | static int check_or_sanitize_refname(const char *refname, int flags, |
271 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
272 | { |
273 | int component_len, component_count = 0; | |
274 | ||
1de16aec | 275 | if (!strcmp(refname, "@")) { |
9ba89f48 | 276 | /* Refname is a single character '@'. */ |
1de16aec NTND |
277 | if (sanitized) |
278 | strbuf_addch(sanitized, '-'); | |
279 | else | |
280 | return -1; | |
281 | } | |
9ba89f48 | 282 | |
bc5fd6d3 | 283 | while (1) { |
1de16aec NTND |
284 | if (sanitized && sanitized->len) |
285 | strbuf_complete(sanitized, '/'); | |
286 | ||
bc5fd6d3 | 287 | /* We are at the start of a path component. */ |
1de16aec NTND |
288 | component_len = check_refname_component(refname, &flags, |
289 | sanitized); | |
290 | if (sanitized && component_len == 0) | |
291 | ; /* OK, omit empty component */ | |
292 | else if (component_len <= 0) | |
cd377f45 JK |
293 | return -1; |
294 | ||
bc5fd6d3 MH |
295 | component_count++; |
296 | if (refname[component_len] == '\0') | |
297 | break; | |
298 | /* Skip to next component. */ | |
299 | refname += component_len + 1; | |
300 | } | |
301 | ||
1de16aec NTND |
302 | if (refname[component_len - 1] == '.') { |
303 | /* Refname ends with '.'. */ | |
304 | if (sanitized) | |
305 | ; /* omit ending dot */ | |
306 | else | |
307 | return -1; | |
308 | } | |
bc5fd6d3 MH |
309 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) |
310 | return -1; /* Refname has only one component. */ | |
311 | return 0; | |
312 | } | |
313 | ||
1de16aec NTND |
314 | int check_refname_format(const char *refname, int flags) |
315 | { | |
316 | return check_or_sanitize_refname(refname, flags, NULL); | |
317 | } | |
318 | ||
319 | void sanitize_refname_component(const char *refname, struct strbuf *out) | |
320 | { | |
321 | if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out)) | |
322 | BUG("sanitizing refname '%s' check returned error", refname); | |
323 | } | |
324 | ||
4cb77009 | 325 | int refname_is_safe(const char *refname) |
d0f810f0 | 326 | { |
39950fef MH |
327 | const char *rest; |
328 | ||
329 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
330 | char *buf; |
331 | int result; | |
e40f3557 MH |
332 | size_t restlen = strlen(rest); |
333 | ||
334 | /* rest must not be empty, or start or end with "/" */ | |
335 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
336 | return 0; | |
d0f810f0 | 337 | |
d0f810f0 RS |
338 | /* |
339 | * Does the refname try to escape refs/? | |
340 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
341 | * is not. | |
342 | */ | |
e40f3557 MH |
343 | buf = xmallocz(restlen); |
344 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
345 | free(buf); |
346 | return result; | |
347 | } | |
35db25c6 MH |
348 | |
349 | do { | |
d0f810f0 RS |
350 | if (!isupper(*refname) && *refname != '_') |
351 | return 0; | |
352 | refname++; | |
35db25c6 | 353 | } while (*refname); |
d0f810f0 RS |
354 | return 1; |
355 | } | |
356 | ||
67be7c5a MH |
357 | /* |
358 | * Return true if refname, which has the specified oid and flags, can | |
359 | * be resolved to an object in the database. If the referred-to object | |
360 | * does not exist, emit a warning and return false. | |
361 | */ | |
362 | int ref_resolves_to_object(const char *refname, | |
9bc45a28 | 363 | struct repository *repo, |
67be7c5a MH |
364 | const struct object_id *oid, |
365 | unsigned int flags) | |
366 | { | |
367 | if (flags & REF_ISBROKEN) | |
368 | return 0; | |
9bc45a28 | 369 | if (!repo_has_object_file(repo, oid)) { |
661558f0 | 370 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
371 | return 0; |
372 | } | |
373 | return 1; | |
374 | } | |
375 | ||
7d2df051 NTND |
376 | char *refs_resolve_refdup(struct ref_store *refs, |
377 | const char *refname, int resolve_flags, | |
0f2dc722 | 378 | struct object_id *oid, int *flags) |
7d2df051 NTND |
379 | { |
380 | const char *result; | |
381 | ||
382 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
ce14de03 | 383 | oid, flags); |
7d2df051 NTND |
384 | return xstrdup_or_null(result); |
385 | } | |
386 | ||
7bd9bcf3 | 387 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 388 | struct object_id *oid, int *flags) |
e1e22e37 | 389 | { |
23a3f0cb | 390 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 391 | refname, resolve_flags, |
0f2dc722 | 392 | oid, flags); |
cddc4258 MH |
393 | } |
394 | ||
bf1377a1 JK |
395 | /* The argument to for_each_filter_refs */ |
396 | struct for_each_ref_filter { | |
7bd9bcf3 | 397 | const char *pattern; |
9ab9b5df | 398 | const char *prefix; |
7bd9bcf3 MH |
399 | each_ref_fn *fn; |
400 | void *cb_data; | |
401 | }; | |
432ad41e | 402 | |
76887df0 | 403 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 404 | { |
76887df0 ÆAB |
405 | struct ref_store *refs = get_main_ref_store(the_repository); |
406 | ||
f1da24ca | 407 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, |
ce14de03 | 408 | oid, flags)) |
7bd9bcf3 MH |
409 | return 0; |
410 | return -1; | |
732134ed MH |
411 | } |
412 | ||
34c290a6 | 413 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 414 | { |
34c290a6 | 415 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
416 | } |
417 | ||
3f9f1acc | 418 | int refs_ref_exists(struct ref_store *refs, const char *refname) |
b3cd33d0 | 419 | { |
f1da24ca | 420 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, |
ce14de03 | 421 | NULL, NULL); |
b3cd33d0 NTND |
422 | } |
423 | ||
7bd9bcf3 | 424 | int ref_exists(const char *refname) |
bc5fd6d3 | 425 | { |
b3cd33d0 | 426 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
427 | } |
428 | ||
bf1377a1 JK |
429 | static int for_each_filter_refs(const char *refname, |
430 | const struct object_id *oid, | |
431 | int flags, void *data) | |
432ad41e | 432 | { |
bf1377a1 | 433 | struct for_each_ref_filter *filter = data; |
7bd9bcf3 | 434 | |
55d34269 | 435 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 436 | return 0; |
9ab9b5df RA |
437 | if (filter->prefix) |
438 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 439 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
440 | } |
441 | ||
ac2ed0d7 | 442 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 443 | { |
45a187cc | 444 | struct object *o = lookup_unknown_object(the_repository, name); |
c774aab9 | 445 | |
7bd9bcf3 | 446 | if (o->type == OBJ_NONE) { |
0df8e965 | 447 | int type = oid_object_info(the_repository, name, NULL); |
6da43d93 | 448 | if (type < 0 || !object_as_type(o, type, 0)) |
7bd9bcf3 MH |
449 | return PEEL_INVALID; |
450 | } | |
bc5fd6d3 | 451 | |
7bd9bcf3 MH |
452 | if (o->type != OBJ_TAG) |
453 | return PEEL_NON_TAG; | |
e1980c9d | 454 | |
7bd9bcf3 MH |
455 | o = deref_tag_noverify(o); |
456 | if (!o) | |
457 | return PEEL_INVALID; | |
458 | ||
ac2ed0d7 | 459 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 460 | return PEEL_PEELED; |
e1980c9d JH |
461 | } |
462 | ||
7bd9bcf3 MH |
463 | struct warn_if_dangling_data { |
464 | FILE *fp; | |
465 | const char *refname; | |
466 | const struct string_list *refnames; | |
467 | const char *msg_fmt; | |
468 | }; | |
bc5fd6d3 | 469 | |
63e14ee2 | 470 | static int warn_if_dangling_symref(const char *refname, |
5cf88fd8 | 471 | const struct object_id *oid UNUSED, |
7bd9bcf3 MH |
472 | int flags, void *cb_data) |
473 | { | |
474 | struct warn_if_dangling_data *d = cb_data; | |
475 | const char *resolves_to; | |
bc5fd6d3 | 476 | |
7bd9bcf3 MH |
477 | if (!(flags & REF_ISSYMREF)) |
478 | return 0; | |
bc5fd6d3 | 479 | |
744c040b | 480 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
481 | if (!resolves_to |
482 | || (d->refname | |
483 | ? strcmp(resolves_to, d->refname) | |
484 | : !string_list_has_string(d->refnames, resolves_to))) { | |
485 | return 0; | |
486 | } | |
bc5fd6d3 | 487 | |
7bd9bcf3 MH |
488 | fprintf(d->fp, d->msg_fmt, refname); |
489 | fputc('\n', d->fp); | |
490 | return 0; | |
bc5fd6d3 MH |
491 | } |
492 | ||
7bd9bcf3 | 493 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 494 | { |
7bd9bcf3 MH |
495 | struct warn_if_dangling_data data; |
496 | ||
497 | data.fp = fp; | |
498 | data.refname = refname; | |
499 | data.refnames = NULL; | |
500 | data.msg_fmt = msg_fmt; | |
501 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
502 | } |
503 | ||
7bd9bcf3 | 504 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 505 | { |
7bd9bcf3 | 506 | struct warn_if_dangling_data data; |
432ad41e | 507 | |
7bd9bcf3 MH |
508 | data.fp = fp; |
509 | data.refname = NULL; | |
510 | data.refnames = refnames; | |
511 | data.msg_fmt = msg_fmt; | |
512 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
513 | } |
514 | ||
7d2df051 NTND |
515 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
516 | { | |
517 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
518 | } | |
519 | ||
7bd9bcf3 | 520 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 521 | { |
23a3f0cb | 522 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
523 | } |
524 | ||
7d2df051 NTND |
525 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
526 | { | |
527 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
528 | } |
529 | ||
7bd9bcf3 | 530 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 531 | { |
23a3f0cb | 532 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
533 | } |
534 | ||
7d2df051 NTND |
535 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
536 | { | |
537 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 538 | } |
432ad41e | 539 | |
7bd9bcf3 | 540 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 541 | { |
23a3f0cb | 542 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
543 | } |
544 | ||
7bd9bcf3 MH |
545 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
546 | { | |
547 | struct strbuf buf = STRBUF_INIT; | |
548 | int ret = 0; | |
549 | struct object_id oid; | |
550 | int flag; | |
c774aab9 | 551 | |
7bd9bcf3 | 552 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 553 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
554 | ret = fn(buf.buf, &oid, flag, cb_data); |
555 | strbuf_release(&buf); | |
c774aab9 | 556 | |
7bd9bcf3 | 557 | return ret; |
e9c4c111 | 558 | } |
c774aab9 | 559 | |
65516f58 RA |
560 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
561 | const char *pattern) | |
562 | { | |
563 | struct strbuf normalized_pattern = STRBUF_INIT; | |
564 | ||
565 | if (*pattern == '/') | |
566 | BUG("pattern must not start with '/'"); | |
567 | ||
b877e617 | 568 | if (prefix) |
65516f58 | 569 | strbuf_addstr(&normalized_pattern, prefix); |
b877e617 DS |
570 | else if (!starts_with(pattern, "refs/") && |
571 | strcmp(pattern, "HEAD")) | |
65516f58 | 572 | strbuf_addstr(&normalized_pattern, "refs/"); |
b877e617 DS |
573 | /* |
574 | * NEEDSWORK: Special case other symrefs such as REBASE_HEAD, | |
575 | * MERGE_HEAD, etc. | |
576 | */ | |
577 | ||
65516f58 RA |
578 | strbuf_addstr(&normalized_pattern, pattern); |
579 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
580 | ||
581 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
582 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
583 | strbuf_release(&normalized_pattern); | |
584 | } | |
585 | ||
7bd9bcf3 MH |
586 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
587 | const char *prefix, void *cb_data) | |
662428f4 | 588 | { |
7bd9bcf3 | 589 | struct strbuf real_pattern = STRBUF_INIT; |
bf1377a1 | 590 | struct for_each_ref_filter filter; |
7bd9bcf3 | 591 | int ret; |
d08bae7e | 592 | |
59556548 | 593 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 594 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
595 | else if (prefix) |
596 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
597 | strbuf_addstr(&real_pattern, pattern); |
598 | ||
894a9d33 | 599 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 600 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 601 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
602 | /* No need to check for '*', there is none. */ |
603 | strbuf_addch(&real_pattern, '*'); | |
604 | } | |
605 | ||
606 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 607 | filter.prefix = prefix; |
d08bae7e IL |
608 | filter.fn = fn; |
609 | filter.cb_data = cb_data; | |
bf1377a1 | 610 | ret = for_each_ref(for_each_filter_refs, &filter); |
d08bae7e IL |
611 | |
612 | strbuf_release(&real_pattern); | |
613 | return ret; | |
614 | } | |
615 | ||
b09fe971 IL |
616 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
617 | { | |
618 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
619 | } | |
620 | ||
4577e483 | 621 | const char *prettify_refname(const char *name) |
a9c37a72 | 622 | { |
3e5b36c6 SG |
623 | if (skip_prefix(name, "refs/heads/", &name) || |
624 | skip_prefix(name, "refs/tags/", &name) || | |
625 | skip_prefix(name, "refs/remotes/", &name)) | |
626 | ; /* nothing */ | |
627 | return name; | |
a9c37a72 DB |
628 | } |
629 | ||
54457fe5 | 630 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
631 | "%.*s", |
632 | "refs/%.*s", | |
633 | "refs/tags/%.*s", | |
634 | "refs/heads/%.*s", | |
635 | "refs/remotes/%.*s", | |
636 | "refs/remotes/%.*s/HEAD", | |
637 | NULL | |
638 | }; | |
639 | ||
60650a48 JH |
640 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
641 | ||
642 | /* | |
643 | * Is it possible that the caller meant full_name with abbrev_name? | |
644 | * If so return a non-zero value to signal "yes"; the magnitude of | |
645 | * the returned value gives the precedence used for disambiguation. | |
646 | * | |
647 | * If abbrev_name cannot mean full_name, return 0. | |
648 | */ | |
54457fe5 | 649 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
650 | { |
651 | const char **p; | |
652 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 653 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 654 | |
60650a48 JH |
655 | for (p = ref_rev_parse_rules; *p; p++) |
656 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
657 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
658 | |
659 | return 0; | |
660 | } | |
661 | ||
b4be7410 BW |
662 | /* |
663 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
664 | * the results to 'prefixes' | |
665 | */ | |
c972bf4c | 666 | void expand_ref_prefix(struct strvec *prefixes, const char *prefix) |
b4be7410 BW |
667 | { |
668 | const char **p; | |
669 | int len = strlen(prefix); | |
670 | ||
671 | for (p = ref_rev_parse_rules; *p; p++) | |
c972bf4c | 672 | strvec_pushf(prefixes, *p, len, prefix); |
b4be7410 BW |
673 | } |
674 | ||
675704c7 JS |
675 | static const char default_branch_name_advice[] = N_( |
676 | "Using '%s' as the name for the initial branch. This default branch name\n" | |
677 | "is subject to change. To configure the initial branch name to use in all\n" | |
678 | "of your new repositories, which will suppress this warning, call:\n" | |
679 | "\n" | |
680 | "\tgit config --global init.defaultBranch <name>\n" | |
681 | "\n" | |
682 | "Names commonly chosen instead of 'master' are 'main', 'trunk' and\n" | |
683 | "'development'. The just-created branch can be renamed via this command:\n" | |
684 | "\n" | |
685 | "\tgit branch -m <name>\n" | |
686 | ); | |
687 | ||
cc0f13c5 | 688 | char *repo_default_branch_name(struct repository *r, int quiet) |
8747ebb7 DGW |
689 | { |
690 | const char *config_key = "init.defaultbranch"; | |
691 | const char *config_display_key = "init.defaultBranch"; | |
692 | char *ret = NULL, *full_ref; | |
704fed9e | 693 | const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME"); |
8747ebb7 | 694 | |
704fed9e JS |
695 | if (env && *env) |
696 | ret = xstrdup(env); | |
697 | else if (repo_config_get_string(r, config_key, &ret) < 0) | |
8747ebb7 DGW |
698 | die(_("could not retrieve `%s`"), config_display_key); |
699 | ||
675704c7 | 700 | if (!ret) { |
8747ebb7 | 701 | ret = xstrdup("master"); |
675704c7 JS |
702 | if (!quiet) |
703 | advise(_(default_branch_name_advice), ret); | |
704 | } | |
8747ebb7 DGW |
705 | |
706 | full_ref = xstrfmt("refs/heads/%s", ret); | |
707 | if (check_refname_format(full_ref, 0)) | |
708 | die(_("invalid branch name: %s = %s"), config_display_key, ret); | |
709 | free(full_ref); | |
710 | ||
711 | return ret; | |
712 | } | |
713 | ||
cc0f13c5 | 714 | const char *git_default_branch_name(int quiet) |
8747ebb7 DGW |
715 | { |
716 | static char *ret; | |
717 | ||
718 | if (!ret) | |
cc0f13c5 | 719 | ret = repo_default_branch_name(the_repository, quiet); |
8747ebb7 DGW |
720 | |
721 | return ret; | |
722 | } | |
723 | ||
ff74f7f1 JH |
724 | /* |
725 | * *string and *len will only be substituted, and *string returned (for | |
726 | * later free()ing) if the string passed in is a magic short-hand form | |
727 | * to name a branch. | |
728 | */ | |
8f56e9d4 | 729 | static char *substitute_branch_name(struct repository *r, |
f24c30e0 JT |
730 | const char **string, int *len, |
731 | int nonfatal_dangling_mark) | |
ff74f7f1 JH |
732 | { |
733 | struct strbuf buf = STRBUF_INIT; | |
f24c30e0 JT |
734 | struct interpret_branch_name_options options = { |
735 | .nonfatal_dangling_mark = nonfatal_dangling_mark | |
736 | }; | |
a4f66a78 | 737 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, &options); |
ff74f7f1 JH |
738 | |
739 | if (ret == *len) { | |
740 | size_t size; | |
741 | *string = strbuf_detach(&buf, &size); | |
742 | *len = size; | |
743 | return (char *)*string; | |
744 | } | |
745 | ||
746 | return NULL; | |
747 | } | |
748 | ||
d8984c53 | 749 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
f24c30e0 | 750 | struct object_id *oid, char **ref, int nonfatal_dangling_mark) |
ff74f7f1 | 751 | { |
f24c30e0 JT |
752 | char *last_branch = substitute_branch_name(r, &str, &len, |
753 | nonfatal_dangling_mark); | |
d8984c53 | 754 | int refs_found = expand_ref(r, str, len, oid, ref); |
41da7111 NTND |
755 | free(last_branch); |
756 | return refs_found; | |
757 | } | |
758 | ||
0b1dbf53 NTND |
759 | int expand_ref(struct repository *repo, const char *str, int len, |
760 | struct object_id *oid, char **ref) | |
41da7111 | 761 | { |
ff74f7f1 JH |
762 | const char **p, *r; |
763 | int refs_found = 0; | |
6cd4a898 | 764 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
765 | |
766 | *ref = NULL; | |
767 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 768 | struct object_id oid_from_ref; |
769 | struct object_id *this_result; | |
ff74f7f1 | 770 | int flag; |
6582bd31 | 771 | struct ref_store *refs = get_main_ref_store(repo); |
ff74f7f1 | 772 | |
cca5fa64 | 773 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
774 | strbuf_reset(&fullref); |
775 | strbuf_addf(&fullref, *p, len, str); | |
f1da24ca | 776 | r = refs_resolve_ref_unsafe(refs, fullref.buf, |
6582bd31 | 777 | RESOLVE_REF_READING, |
ce14de03 | 778 | this_result, &flag); |
ff74f7f1 JH |
779 | if (r) { |
780 | if (!refs_found++) | |
781 | *ref = xstrdup(r); | |
782 | if (!warn_ambiguous_refs) | |
783 | break; | |
6cd4a898 | 784 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 785 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 786 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 787 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 788 | } |
ff74f7f1 | 789 | } |
6cd4a898 | 790 | strbuf_release(&fullref); |
ff74f7f1 JH |
791 | return refs_found; |
792 | } | |
793 | ||
56700903 NTND |
794 | int repo_dwim_log(struct repository *r, const char *str, int len, |
795 | struct object_id *oid, char **log) | |
ff74f7f1 | 796 | { |
56700903 | 797 | struct ref_store *refs = get_main_ref_store(r); |
f24c30e0 | 798 | char *last_branch = substitute_branch_name(r, &str, &len, 0); |
ff74f7f1 JH |
799 | const char **p; |
800 | int logs_found = 0; | |
6cd4a898 | 801 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
802 | |
803 | *log = NULL; | |
804 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 805 | struct object_id hash; |
ff74f7f1 JH |
806 | const char *ref, *it; |
807 | ||
6cd4a898 JK |
808 | strbuf_reset(&path); |
809 | strbuf_addf(&path, *p, len, str); | |
56700903 NTND |
810 | ref = refs_resolve_ref_unsafe(refs, path.buf, |
811 | RESOLVE_REF_READING, | |
ce14de03 | 812 | oid ? &hash : NULL, NULL); |
ff74f7f1 JH |
813 | if (!ref) |
814 | continue; | |
56700903 | 815 | if (refs_reflog_exists(refs, path.buf)) |
6cd4a898 | 816 | it = path.buf; |
56700903 NTND |
817 | else if (strcmp(ref, path.buf) && |
818 | refs_reflog_exists(refs, ref)) | |
ff74f7f1 JH |
819 | it = ref; |
820 | else | |
821 | continue; | |
822 | if (!logs_found++) { | |
823 | *log = xstrdup(it); | |
6f45ec88 ÆAB |
824 | if (oid) |
825 | oidcpy(oid, &hash); | |
ff74f7f1 | 826 | } |
7bd9bcf3 MH |
827 | if (!warn_ambiguous_refs) |
828 | break; | |
c0277d15 | 829 | } |
6cd4a898 | 830 | strbuf_release(&path); |
7bd9bcf3 MH |
831 | free(last_branch); |
832 | return logs_found; | |
2ddb5d17 BK |
833 | } |
834 | ||
56700903 NTND |
835 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
836 | { | |
837 | return repo_dwim_log(the_repository, str, len, oid, log); | |
838 | } | |
839 | ||
71e54734 | 840 | int is_per_worktree_ref(const char *refname) |
266b1827 | 841 | { |
55dd8b91 HWN |
842 | return starts_with(refname, "refs/worktree/") || |
843 | starts_with(refname, "refs/bisect/") || | |
844 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
845 | } |
846 | ||
847 | static int is_pseudoref_syntax(const char *refname) | |
848 | { | |
849 | const char *c; | |
850 | ||
851 | for (c = refname; *c; c++) { | |
852 | if (!isupper(*c) && *c != '-' && *c != '_') | |
853 | return 0; | |
854 | } | |
855 | ||
71e54734 HWN |
856 | /* |
857 | * HEAD is not a pseudoref, but it certainly uses the | |
858 | * pseudoref syntax. | |
859 | */ | |
266b1827 DT |
860 | return 1; |
861 | } | |
862 | ||
1eba2240 KN |
863 | int is_pseudoref(struct ref_store *refs, const char *refname) |
864 | { | |
865 | static const char *const irregular_pseudorefs[] = { | |
866 | "AUTO_MERGE", | |
867 | "BISECT_EXPECTED_REV", | |
868 | "NOTES_MERGE_PARTIAL", | |
869 | "NOTES_MERGE_REF", | |
870 | "MERGE_AUTOSTASH", | |
871 | }; | |
872 | struct object_id oid; | |
873 | size_t i; | |
874 | ||
875 | if (!is_pseudoref_syntax(refname)) | |
876 | return 0; | |
877 | ||
878 | if (ends_with(refname, "_HEAD")) { | |
879 | refs_resolve_ref_unsafe(refs, refname, | |
880 | RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE, | |
881 | &oid, NULL); | |
882 | return !is_null_oid(&oid); | |
883 | } | |
884 | ||
885 | for (i = 0; i < ARRAY_SIZE(irregular_pseudorefs); i++) | |
886 | if (!strcmp(refname, irregular_pseudorefs[i])) { | |
887 | refs_resolve_ref_unsafe(refs, refname, | |
888 | RESOLVE_REF_READING | RESOLVE_REF_NO_RECURSE, | |
889 | &oid, NULL); | |
890 | return !is_null_oid(&oid); | |
891 | } | |
892 | ||
893 | return 0; | |
894 | } | |
895 | ||
896 | int is_headref(struct ref_store *refs, const char *refname) | |
897 | { | |
898 | if (!strcmp(refname, "HEAD")) | |
899 | return refs_ref_exists(refs, refname); | |
900 | ||
901 | return 0; | |
902 | } | |
903 | ||
71e54734 HWN |
904 | static int is_current_worktree_ref(const char *ref) { |
905 | return is_pseudoref_syntax(ref) || is_per_worktree_ref(ref); | |
3a3b9d8c NTND |
906 | } |
907 | ||
71e54734 HWN |
908 | enum ref_worktree_type parse_worktree_ref(const char *maybe_worktree_ref, |
909 | const char **worktree_name, int *worktree_name_length, | |
910 | const char **bare_refname) | |
3a3b9d8c | 911 | { |
71e54734 HWN |
912 | const char *name_dummy; |
913 | int name_length_dummy; | |
914 | const char *ref_dummy; | |
3a3b9d8c | 915 | |
71e54734 HWN |
916 | if (!worktree_name) |
917 | worktree_name = &name_dummy; | |
918 | if (!worktree_name_length) | |
919 | worktree_name_length = &name_length_dummy; | |
920 | if (!bare_refname) | |
921 | bare_refname = &ref_dummy; | |
922 | ||
923 | if (skip_prefix(maybe_worktree_ref, "worktrees/", bare_refname)) { | |
924 | const char *slash = strchr(*bare_refname, '/'); | |
925 | ||
926 | *worktree_name = *bare_refname; | |
927 | if (!slash) { | |
928 | *worktree_name_length = strlen(*worktree_name); | |
929 | ||
930 | /* This is an error condition, and the caller tell because the bare_refname is "" */ | |
931 | *bare_refname = *worktree_name + *worktree_name_length; | |
932 | return REF_WORKTREE_OTHER; | |
933 | } | |
934 | ||
935 | *worktree_name_length = slash - *bare_refname; | |
936 | *bare_refname = slash + 1; | |
937 | ||
938 | if (is_current_worktree_ref(*bare_refname)) | |
939 | return REF_WORKTREE_OTHER; | |
940 | } | |
941 | ||
942 | *worktree_name = NULL; | |
943 | *worktree_name_length = 0; | |
944 | ||
945 | if (skip_prefix(maybe_worktree_ref, "main-worktree/", bare_refname) | |
946 | && is_current_worktree_ref(*bare_refname)) | |
947 | return REF_WORKTREE_MAIN; | |
948 | ||
949 | *bare_refname = maybe_worktree_ref; | |
950 | if (is_current_worktree_ref(maybe_worktree_ref)) | |
951 | return REF_WORKTREE_CURRENT; | |
952 | ||
953 | return REF_WORKTREE_SHARED; | |
266b1827 DT |
954 | } |
955 | ||
4ff0f01c MH |
956 | long get_files_ref_lock_timeout_ms(void) |
957 | { | |
958 | static int configured = 0; | |
959 | ||
960 | /* The default timeout is 100 ms: */ | |
961 | static int timeout_ms = 100; | |
962 | ||
963 | if (!configured) { | |
964 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
965 | configured = 1; | |
966 | } | |
967 | ||
968 | return timeout_ms; | |
969 | } | |
970 | ||
c0fe4e8b NTND |
971 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
972 | const char *refname, | |
2616a5e5 | 973 | const struct object_id *old_oid, |
c0fe4e8b | 974 | unsigned int flags) |
41b625b0 | 975 | { |
7521cc46 | 976 | struct ref_transaction *transaction; |
a4c653df | 977 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 978 | |
c6da34a6 | 979 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 980 | if (!transaction || |
89f3bbdd | 981 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 982 | flags, msg, &err) || |
db7516ab | 983 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
984 | error("%s", err.buf); |
985 | ref_transaction_free(transaction); | |
986 | strbuf_release(&err); | |
c0277d15 | 987 | return 1; |
41b625b0 | 988 | } |
7bd9bcf3 MH |
989 | ref_transaction_free(transaction); |
990 | strbuf_release(&err); | |
b531394d BC |
991 | return 0; |
992 | } | |
41b625b0 | 993 | |
c0fe4e8b | 994 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 995 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 996 | { |
23a3f0cb | 997 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 998 | old_oid, flags); |
c0fe4e8b NTND |
999 | } |
1000 | ||
523fa69c | 1001 | static void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 1002 | { |
0ec29a47 JH |
1003 | char c; |
1004 | int wasspace = 1; | |
8b5157e4 | 1005 | |
0ec29a47 JH |
1006 | while ((c = *msg++)) { |
1007 | if (wasspace && isspace(c)) | |
1008 | continue; | |
1009 | wasspace = isspace(c); | |
1010 | if (wasspace) | |
1011 | c = ' '; | |
80a6c207 | 1012 | strbuf_addch(sb, c); |
a4c653df | 1013 | } |
80a6c207 | 1014 | strbuf_rtrim(sb); |
0ec29a47 | 1015 | } |
8b5157e4 | 1016 | |
523fa69c JH |
1017 | static char *normalize_reflog_message(const char *msg) |
1018 | { | |
1019 | struct strbuf sb = STRBUF_INIT; | |
1020 | ||
1021 | if (msg && *msg) | |
1022 | copy_reflog_msg(&sb, msg); | |
1023 | return strbuf_detach(&sb, NULL); | |
1024 | } | |
1025 | ||
4cb77009 | 1026 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 1027 | { |
341fb286 CW |
1028 | switch (log_all_ref_updates) { |
1029 | case LOG_REFS_ALWAYS: | |
1030 | return 1; | |
1031 | case LOG_REFS_NORMAL: | |
1032 | return starts_with(refname, "refs/heads/") || | |
1033 | starts_with(refname, "refs/remotes/") || | |
1034 | starts_with(refname, "refs/notes/") || | |
1035 | !strcmp(refname, "HEAD"); | |
1036 | default: | |
4e2bef57 | 1037 | return 0; |
341fb286 | 1038 | } |
4e2bef57 DT |
1039 | } |
1040 | ||
e7e0f26e | 1041 | int is_branch(const char *refname) |
c3b0dec5 | 1042 | { |
59556548 | 1043 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
1044 | } |
1045 | ||
4207ed28 RS |
1046 | struct read_ref_at_cb { |
1047 | const char *refname; | |
dddbad72 | 1048 | timestamp_t at_time; |
4207ed28 RS |
1049 | int cnt; |
1050 | int reccnt; | |
8eb36d94 | 1051 | struct object_id *oid; |
4207ed28 RS |
1052 | int found_it; |
1053 | ||
8eb36d94 | 1054 | struct object_id ooid; |
1055 | struct object_id noid; | |
4207ed28 | 1056 | int tz; |
dddbad72 | 1057 | timestamp_t date; |
4207ed28 | 1058 | char **msg; |
dddbad72 | 1059 | timestamp_t *cutoff_time; |
4207ed28 RS |
1060 | int *cutoff_tz; |
1061 | int *cutoff_cnt; | |
1062 | }; | |
1063 | ||
95c2a718 DL |
1064 | static void set_read_ref_cutoffs(struct read_ref_at_cb *cb, |
1065 | timestamp_t timestamp, int tz, const char *message) | |
1066 | { | |
1067 | if (cb->msg) | |
1068 | *cb->msg = xstrdup(message); | |
1069 | if (cb->cutoff_time) | |
1070 | *cb->cutoff_time = timestamp; | |
1071 | if (cb->cutoff_tz) | |
1072 | *cb->cutoff_tz = tz; | |
1073 | if (cb->cutoff_cnt) | |
1074 | *cb->cutoff_cnt = cb->reccnt; | |
1075 | } | |
1076 | ||
9461d272 | 1077 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
5cf88fd8 | 1078 | const char *email UNUSED, |
c006e9fa JK |
1079 | timestamp_t timestamp, int tz, |
1080 | const char *message, void *cb_data) | |
4207ed28 RS |
1081 | { |
1082 | struct read_ref_at_cb *cb = cb_data; | |
1083 | ||
4207ed28 RS |
1084 | cb->tz = tz; |
1085 | cb->date = timestamp; | |
1086 | ||
aa72e73a | 1087 | if (timestamp <= cb->at_time || cb->cnt == 0) { |
95c2a718 | 1088 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
4207ed28 | 1089 | /* |
78fb4579 | 1090 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
1091 | * hold the values for the previous record. |
1092 | */ | |
aa72e73a JK |
1093 | if (!is_null_oid(&cb->ooid)) { |
1094 | oidcpy(cb->oid, noid); | |
1095 | if (!oideq(&cb->ooid, noid)) | |
1096 | warning(_("log for ref %s has gap after %s"), | |
a5481a6c | 1097 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
aa72e73a JK |
1098 | } |
1099 | else if (cb->date == cb->at_time) | |
8eb36d94 | 1100 | oidcpy(cb->oid, noid); |
9001dc2a | 1101 | else if (!oideq(noid, cb->oid)) |
661558f0 | 1102 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 1103 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 1104 | DATE_MODE(RFC2822))); |
aa72e73a JK |
1105 | cb->reccnt++; |
1106 | oidcpy(&cb->ooid, ooid); | |
1107 | oidcpy(&cb->noid, noid); | |
4207ed28 | 1108 | cb->found_it = 1; |
aa72e73a | 1109 | return 1; |
4207ed28 | 1110 | } |
95c2a718 | 1111 | cb->reccnt++; |
8eb36d94 | 1112 | oidcpy(&cb->ooid, ooid); |
1113 | oidcpy(&cb->noid, noid); | |
aa72e73a JK |
1114 | if (cb->cnt > 0) |
1115 | cb->cnt--; | |
1116 | return 0; | |
4207ed28 RS |
1117 | } |
1118 | ||
9461d272 | 1119 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
5cf88fd8 | 1120 | const char *email UNUSED, |
c006e9fa JK |
1121 | timestamp_t timestamp, int tz, |
1122 | const char *message, void *cb_data) | |
4207ed28 RS |
1123 | { |
1124 | struct read_ref_at_cb *cb = cb_data; | |
1125 | ||
95c2a718 | 1126 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
8eb36d94 | 1127 | oidcpy(cb->oid, ooid); |
755e7465 | 1128 | if (cb->at_time && is_null_oid(cb->oid)) |
8eb36d94 | 1129 | oidcpy(cb->oid, noid); |
4207ed28 RS |
1130 | /* We just want the first entry */ |
1131 | return 1; | |
16d7cc90 JH |
1132 | } |
1133 | ||
7fdff474 NTND |
1134 | int read_ref_at(struct ref_store *refs, const char *refname, |
1135 | unsigned int flags, timestamp_t at_time, int cnt, | |
8eb36d94 | 1136 | struct object_id *oid, char **msg, |
dddbad72 | 1137 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 1138 | { |
4207ed28 | 1139 | struct read_ref_at_cb cb; |
d556fae2 | 1140 | |
4207ed28 RS |
1141 | memset(&cb, 0, sizeof(cb)); |
1142 | cb.refname = refname; | |
1143 | cb.at_time = at_time; | |
1144 | cb.cnt = cnt; | |
1145 | cb.msg = msg; | |
1146 | cb.cutoff_time = cutoff_time; | |
1147 | cb.cutoff_tz = cutoff_tz; | |
1148 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 1149 | cb.oid = oid; |
4207ed28 | 1150 | |
7fdff474 | 1151 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb); |
4207ed28 | 1152 | |
c41a87dd | 1153 | if (!cb.reccnt) { |
5edd1267 JK |
1154 | if (cnt == 0) { |
1155 | /* | |
1156 | * The caller asked for ref@{0}, and we had no entries. | |
1157 | * It's a bit subtle, but in practice all callers have | |
1158 | * prepped the "oid" field with the current value of | |
1159 | * the ref, which is the most reasonable fallback. | |
1160 | * | |
1161 | * We'll put dummy values into the out-parameters (so | |
1162 | * they're not just uninitialized garbage), and the | |
1163 | * caller can take our return value as a hint that | |
1164 | * we did not find any such reflog. | |
1165 | */ | |
1166 | set_read_ref_cutoffs(&cb, 0, 0, "empty reflog"); | |
1167 | return 1; | |
1168 | } | |
321c89bf | 1169 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
1170 | exit(128); |
1171 | else | |
661558f0 | 1172 | die(_("log for %s is empty"), refname); |
c41a87dd | 1173 | } |
4207ed28 RS |
1174 | if (cb.found_it) |
1175 | return 0; | |
1176 | ||
7fdff474 | 1177 | refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb); |
d556fae2 | 1178 | |
16d7cc90 | 1179 | return 1; |
d556fae2 | 1180 | } |
2ff81662 | 1181 | |
c0fe4e8b NTND |
1182 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
1183 | struct strbuf *err) | |
caa4046c | 1184 | { |
c0fe4e8b | 1185 | struct ref_transaction *tr; |
5a603b04 JN |
1186 | assert(err); |
1187 | ||
ca56dadb | 1188 | CALLOC_ARRAY(tr, 1); |
c0fe4e8b NTND |
1189 | tr->ref_store = refs; |
1190 | return tr; | |
1191 | } | |
1192 | ||
1193 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
1194 | { | |
c6da34a6 | 1195 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
1196 | } |
1197 | ||
026bd1d3 | 1198 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1199 | { |
43a2dfde | 1200 | size_t i; |
caa4046c | 1201 | |
1b07255c RS |
1202 | if (!transaction) |
1203 | return; | |
1204 | ||
30173b88 MH |
1205 | switch (transaction->state) { |
1206 | case REF_TRANSACTION_OPEN: | |
1207 | case REF_TRANSACTION_CLOSED: | |
1208 | /* OK */ | |
1209 | break; | |
1210 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1211 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1212 | break; |
1213 | default: | |
033abf97 | 1214 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1215 | break; |
1216 | } | |
1217 | ||
db7516ab RS |
1218 | for (i = 0; i < transaction->nr; i++) { |
1219 | free(transaction->updates[i]->msg); | |
644daf77 KN |
1220 | free((char *)transaction->updates[i]->new_target); |
1221 | free((char *)transaction->updates[i]->old_target); | |
88615910 | 1222 | free(transaction->updates[i]); |
db7516ab | 1223 | } |
caa4046c MH |
1224 | free(transaction->updates); |
1225 | free(transaction); | |
1226 | } | |
1227 | ||
71564516 MH |
1228 | struct ref_update *ref_transaction_add_update( |
1229 | struct ref_transaction *transaction, | |
1230 | const char *refname, unsigned int flags, | |
89f3bbdd | 1231 | const struct object_id *new_oid, |
1232 | const struct object_id *old_oid, | |
1bc4cc3f | 1233 | const char *new_target, const char *old_target, |
71564516 | 1234 | const char *msg) |
caa4046c | 1235 | { |
96ffc06f | 1236 | struct ref_update *update; |
71564516 MH |
1237 | |
1238 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1239 | BUG("update called for transaction that is not open"); |
71564516 | 1240 | |
1bc4cc3f KN |
1241 | if (old_oid && old_target) |
1242 | BUG("only one of old_oid and old_target should be non NULL"); | |
1243 | if (new_oid && new_target) | |
1244 | BUG("only one of new_oid and new_target should be non NULL"); | |
1245 | ||
96ffc06f | 1246 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1247 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1248 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1249 | |
1250 | update->flags = flags; | |
1251 | ||
644daf77 KN |
1252 | update->new_target = xstrdup_or_null(new_target); |
1253 | update->old_target = xstrdup_or_null(old_target); | |
1254 | if ((flags & REF_HAVE_NEW) && new_oid) | |
89f3bbdd | 1255 | oidcpy(&update->new_oid, new_oid); |
644daf77 | 1256 | if ((flags & REF_HAVE_OLD) && old_oid) |
89f3bbdd | 1257 | oidcpy(&update->old_oid, old_oid); |
644daf77 | 1258 | |
523fa69c | 1259 | update->msg = normalize_reflog_message(msg); |
caa4046c MH |
1260 | return update; |
1261 | } | |
1262 | ||
8e34800e RS |
1263 | int ref_transaction_update(struct ref_transaction *transaction, |
1264 | const char *refname, | |
89f3bbdd | 1265 | const struct object_id *new_oid, |
1266 | const struct object_id *old_oid, | |
1bc4cc3f KN |
1267 | const char *new_target, |
1268 | const char *old_target, | |
1d147bdf | 1269 | unsigned int flags, const char *msg, |
8e34800e | 1270 | struct strbuf *err) |
caa4046c | 1271 | { |
5a603b04 JN |
1272 | assert(err); |
1273 | ||
3c966c7b HWN |
1274 | if (!(flags & REF_SKIP_REFNAME_VERIFICATION) && |
1275 | ((new_oid && !is_null_oid(new_oid)) ? | |
1276 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : | |
1277 | !refname_is_safe(refname))) { | |
661558f0 | 1278 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1279 | refname); |
1280 | return -1; | |
1281 | } | |
1282 | ||
a9bbbcec MH |
1283 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1284 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1285 | |
49f1eb3b JK |
1286 | /* |
1287 | * Clear flags outside the allowed set; this should be a noop because | |
1288 | * of the BUG() check above, but it works around a -Wnonnull warning | |
1289 | * with some versions of "gcc -O3". | |
1290 | */ | |
1291 | flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS; | |
1292 | ||
89f3bbdd | 1293 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
644daf77 | 1294 | flags |= (new_target ? REF_HAVE_NEW : 0) | (old_target ? REF_HAVE_OLD : 0); |
71564516 MH |
1295 | |
1296 | ref_transaction_add_update(transaction, refname, flags, | |
1bc4cc3f KN |
1297 | new_oid, old_oid, new_target, |
1298 | old_target, msg); | |
8e34800e | 1299 | return 0; |
caa4046c MH |
1300 | } |
1301 | ||
b416af5b RS |
1302 | int ref_transaction_create(struct ref_transaction *transaction, |
1303 | const char *refname, | |
89f3bbdd | 1304 | const struct object_id *new_oid, |
fec14ec3 | 1305 | unsigned int flags, const char *msg, |
b416af5b | 1306 | struct strbuf *err) |
caa4046c | 1307 | { |
d097a23b DS |
1308 | if (!new_oid || is_null_oid(new_oid)) { |
1309 | strbuf_addf(err, "'%s' has a null OID", refname); | |
1310 | return 1; | |
1311 | } | |
89f3bbdd | 1312 | return ref_transaction_update(transaction, refname, new_oid, |
1bc4cc3f KN |
1313 | null_oid(), NULL, NULL, flags, |
1314 | msg, err); | |
caa4046c MH |
1315 | } |
1316 | ||
8c8bdc0d RS |
1317 | int ref_transaction_delete(struct ref_transaction *transaction, |
1318 | const char *refname, | |
89f3bbdd | 1319 | const struct object_id *old_oid, |
fb5a6bb6 | 1320 | unsigned int flags, const char *msg, |
8c8bdc0d | 1321 | struct strbuf *err) |
caa4046c | 1322 | { |
89f3bbdd | 1323 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1324 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1325 | return ref_transaction_update(transaction, refname, |
14228447 | 1326 | null_oid(), old_oid, |
1bc4cc3f KN |
1327 | NULL, NULL, flags, |
1328 | msg, err); | |
caa4046c MH |
1329 | } |
1330 | ||
16180334 MH |
1331 | int ref_transaction_verify(struct ref_transaction *transaction, |
1332 | const char *refname, | |
89f3bbdd | 1333 | const struct object_id *old_oid, |
16180334 MH |
1334 | unsigned int flags, |
1335 | struct strbuf *err) | |
1336 | { | |
89f3bbdd | 1337 | if (!old_oid) |
033abf97 | 1338 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1339 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1340 | NULL, old_oid, |
1bc4cc3f | 1341 | NULL, NULL, |
16180334 MH |
1342 | flags, NULL, err); |
1343 | } | |
1344 | ||
c0fe4e8b | 1345 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1346 | const char *refname, const struct object_id *new_oid, |
1347 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1348 | enum action_on_err onerr) |
4738a333 | 1349 | { |
74ec19d4 | 1350 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1351 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1352 | int ret = 0; |
b4d75ac1 | 1353 | |
c6da34a6 | 1354 | t = ref_store_transaction_begin(refs, &err); |
09743417 | 1355 | if (!t || |
1bc4cc3f KN |
1356 | ref_transaction_update(t, refname, new_oid, old_oid, NULL, NULL, |
1357 | flags, msg, &err) || | |
09743417 HWN |
1358 | ref_transaction_commit(t, &err)) { |
1359 | ret = 1; | |
1360 | ref_transaction_free(t); | |
74ec19d4 DT |
1361 | } |
1362 | if (ret) { | |
661558f0 | 1363 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1364 | |
b4d75ac1 RS |
1365 | switch (onerr) { |
1366 | case UPDATE_REFS_MSG_ON_ERR: | |
1367 | error(str, refname, err.buf); | |
1368 | break; | |
1369 | case UPDATE_REFS_DIE_ON_ERR: | |
1370 | die(str, refname, err.buf); | |
1371 | break; | |
1372 | case UPDATE_REFS_QUIET_ON_ERR: | |
1373 | break; | |
1374 | } | |
1375 | strbuf_release(&err); | |
4738a333 | 1376 | return 1; |
b4d75ac1 RS |
1377 | } |
1378 | strbuf_release(&err); | |
74ec19d4 DT |
1379 | if (t) |
1380 | ref_transaction_free(t); | |
b4d75ac1 | 1381 | return 0; |
4738a333 BK |
1382 | } |
1383 | ||
c0fe4e8b | 1384 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1385 | const struct object_id *new_oid, |
1386 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1387 | unsigned int flags, enum action_on_err onerr) |
1388 | { | |
23a3f0cb | 1389 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1390 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1391 | } |
1392 | ||
613bef56 JK |
1393 | /* |
1394 | * Check that the string refname matches a rule of the form | |
1395 | * "{prefix}%.*s{suffix}". So "foo/bar/baz" would match the rule | |
1396 | * "foo/%.*s/baz", and return the string "bar". | |
1397 | */ | |
1398 | static const char *match_parse_rule(const char *refname, const char *rule, | |
1399 | size_t *len) | |
7c2b3029 | 1400 | { |
613bef56 JK |
1401 | /* |
1402 | * Check that rule matches refname up to the first percent in the rule. | |
1403 | * We can bail immediately if not, but otherwise we leave "rule" at the | |
1404 | * %-placeholder, and "refname" at the start of the potential matched | |
1405 | * name. | |
1406 | */ | |
1407 | while (*rule != '%') { | |
1408 | if (!*rule) | |
1409 | BUG("rev-parse rule did not have percent"); | |
1410 | if (*refname++ != *rule++) | |
1411 | return NULL; | |
1412 | } | |
7c2b3029 | 1413 | |
613bef56 JK |
1414 | /* |
1415 | * Check that our "%" is the expected placeholder. This assumes there | |
1416 | * are no other percents (placeholder or quoted) in the string, but | |
1417 | * that is sufficient for our rev-parse rules. | |
1418 | */ | |
1419 | if (!skip_prefix(rule, "%.*s", &rule)) | |
1420 | return NULL; | |
7c2b3029 | 1421 | |
613bef56 JK |
1422 | /* |
1423 | * And now check that our suffix (if any) matches. | |
1424 | */ | |
1425 | if (!strip_suffix(refname, rule, len)) | |
1426 | return NULL; | |
7c2b3029 | 1427 | |
613bef56 JK |
1428 | return refname; /* len set by strip_suffix() */ |
1429 | } | |
7c2b3029 | 1430 | |
546edf37 NTND |
1431 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1432 | const char *refname, int strict) | |
7c2b3029 JK |
1433 | { |
1434 | int i; | |
6cd4a898 | 1435 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1436 | |
7c2b3029 | 1437 | /* skip first rule, it will always match */ |
8f416f65 | 1438 | for (i = NUM_REV_PARSE_RULES - 1; i > 0 ; --i) { |
7c2b3029 | 1439 | int j; |
6e7b3309 | 1440 | int rules_to_fail = i; |
613bef56 | 1441 | const char *short_name; |
dd5e4d39 | 1442 | size_t short_name_len; |
7c2b3029 | 1443 | |
613bef56 JK |
1444 | short_name = match_parse_rule(refname, ref_rev_parse_rules[i], |
1445 | &short_name_len); | |
1446 | if (!short_name) | |
7c2b3029 JK |
1447 | continue; |
1448 | ||
6e7b3309 BW |
1449 | /* |
1450 | * in strict mode, all (except the matched one) rules | |
1451 | * must fail to resolve to a valid non-ambiguous ref | |
1452 | */ | |
1453 | if (strict) | |
8f416f65 | 1454 | rules_to_fail = NUM_REV_PARSE_RULES; |
6e7b3309 | 1455 | |
7c2b3029 JK |
1456 | /* |
1457 | * check if the short name resolves to a valid ref, | |
1458 | * but use only rules prior to the matched one | |
1459 | */ | |
6e7b3309 | 1460 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1461 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1462 | |
6e7b3309 BW |
1463 | /* skip matched rule */ |
1464 | if (i == j) | |
1465 | continue; | |
1466 | ||
7c2b3029 JK |
1467 | /* |
1468 | * the short name is ambiguous, if it resolves | |
1469 | * (with this previous rule) to a valid ref | |
1470 | * read_ref() returns 0 on success | |
1471 | */ | |
6cd4a898 JK |
1472 | strbuf_reset(&resolved_buf); |
1473 | strbuf_addf(&resolved_buf, rule, | |
dd5e4d39 JK |
1474 | cast_size_t_to_int(short_name_len), |
1475 | short_name); | |
546edf37 | 1476 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1477 | break; |
1478 | } | |
1479 | ||
1480 | /* | |
1481 | * short name is non-ambiguous if all previous rules | |
1482 | * haven't resolved to a valid ref | |
1483 | */ | |
6cd4a898 JK |
1484 | if (j == rules_to_fail) { |
1485 | strbuf_release(&resolved_buf); | |
613bef56 | 1486 | return xmemdupz(short_name, short_name_len); |
6cd4a898 | 1487 | } |
7c2b3029 JK |
1488 | } |
1489 | ||
6cd4a898 | 1490 | strbuf_release(&resolved_buf); |
dfefa935 | 1491 | return xstrdup(refname); |
7c2b3029 | 1492 | } |
daebaa78 | 1493 | |
546edf37 NTND |
1494 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1495 | { | |
1496 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1497 | refname, strict); | |
1498 | } | |
1499 | ||
9b67eb6f | 1500 | int parse_hide_refs_config(const char *var, const char *value, const char *section, |
c45841ff | 1501 | struct strvec *hide_refs) |
daebaa78 | 1502 | { |
ad8c7cda | 1503 | const char *key; |
daebaa78 | 1504 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1505 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1506 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1507 | char *ref; |
1508 | int len; | |
1509 | ||
1510 | if (!value) | |
1511 | return config_error_nonbool(var); | |
c45841ff TB |
1512 | |
1513 | /* drop const to remove trailing '/' characters */ | |
1514 | ref = (char *)strvec_push(hide_refs, value); | |
daebaa78 JH |
1515 | len = strlen(ref); |
1516 | while (len && ref[len - 1] == '/') | |
1517 | ref[--len] = '\0'; | |
daebaa78 JH |
1518 | } |
1519 | return 0; | |
1520 | } | |
1521 | ||
9b67eb6f | 1522 | int ref_is_hidden(const char *refname, const char *refname_full, |
c45841ff | 1523 | const struct strvec *hide_refs) |
daebaa78 | 1524 | { |
2bc31d16 | 1525 | int i; |
daebaa78 | 1526 | |
2bc31d16 | 1527 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
c45841ff | 1528 | const char *match = hide_refs->v[i]; |
78a766ab | 1529 | const char *subject; |
2bc31d16 | 1530 | int neg = 0; |
7a40a95e | 1531 | const char *p; |
2bc31d16 JK |
1532 | |
1533 | if (*match == '!') { | |
1534 | neg = 1; | |
1535 | match++; | |
1536 | } | |
1537 | ||
78a766ab LF |
1538 | if (*match == '^') { |
1539 | subject = refname_full; | |
1540 | match++; | |
1541 | } else { | |
1542 | subject = refname; | |
1543 | } | |
1544 | ||
1545 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1546 | if (subject && |
1547 | skip_prefix(subject, match, &p) && | |
1548 | (!*p || *p == '/')) | |
2bc31d16 | 1549 | return !neg; |
daebaa78 JH |
1550 | } |
1551 | return 0; | |
1552 | } | |
fa5b1830 | 1553 | |
15af64dc TB |
1554 | const char **hidden_refs_to_excludes(const struct strvec *hide_refs) |
1555 | { | |
1556 | const char **pattern; | |
1557 | for (pattern = hide_refs->v; *pattern; pattern++) { | |
1558 | /* | |
1559 | * We can't feed any excludes from hidden refs config | |
1560 | * sections, since later rules may override previous | |
1561 | * ones. For example, with rules "refs/foo" and | |
1562 | * "!refs/foo/bar", we should show "refs/foo/bar" (and | |
1563 | * everything underneath it), but the earlier exclusion | |
1564 | * would cause us to skip all of "refs/foo". We | |
1565 | * likewise don't implement the namespace stripping | |
1566 | * required for '^' rules. | |
1567 | * | |
1568 | * Both are possible to do, but complicated, so avoid | |
1569 | * populating the jump list at all if we see either of | |
1570 | * these patterns. | |
1571 | */ | |
1572 | if (**pattern == '!' || **pattern == '^') | |
1573 | return NULL; | |
1574 | } | |
1575 | return hide_refs->v; | |
1576 | } | |
1577 | ||
0845122c DT |
1578 | const char *find_descendant_ref(const char *dirname, |
1579 | const struct string_list *extras, | |
1580 | const struct string_list *skip) | |
fa5b1830 | 1581 | { |
0845122c | 1582 | int pos; |
fa5b1830 | 1583 | |
0845122c DT |
1584 | if (!extras) |
1585 | return NULL; | |
fa5b1830 MH |
1586 | |
1587 | /* | |
0845122c DT |
1588 | * Look at the place where dirname would be inserted into |
1589 | * extras. If there is an entry at that position that starts | |
1590 | * with dirname (remember, dirname includes the trailing | |
1591 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1592 | */ |
0845122c DT |
1593 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1594 | pos < extras->nr; pos++) { | |
1595 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1596 | |
0845122c DT |
1597 | if (!starts_with(extra_refname, dirname)) |
1598 | break; | |
1599 | ||
1600 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1601 | return extra_refname; | |
fa5b1830 | 1602 | } |
0845122c DT |
1603 | return NULL; |
1604 | } | |
fa5b1830 | 1605 | |
62f0b399 | 1606 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1607 | { |
1608 | struct object_id oid; | |
1609 | int flag; | |
1610 | ||
f1da24ca | 1611 | if (refs_resolve_ref_unsafe(refs, "HEAD", RESOLVE_REF_READING, |
ce14de03 | 1612 | &oid, &flag)) |
2bf68ed5 DT |
1613 | return fn("HEAD", &oid, flag, cb_data); |
1614 | ||
1615 | return 0; | |
1616 | } | |
1617 | ||
1618 | int head_ref(each_ref_fn fn, void *cb_data) | |
1619 | { | |
23a3f0cb | 1620 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1621 | } |
93770590 | 1622 | |
e121b9cb MH |
1623 | struct ref_iterator *refs_ref_iterator_begin( |
1624 | struct ref_store *refs, | |
b269ac53 TB |
1625 | const char *prefix, |
1626 | const char **exclude_patterns, | |
1627 | int trim, | |
9aab952e | 1628 | enum do_for_each_ref_flags flags) |
e121b9cb MH |
1629 | { |
1630 | struct ref_iterator *iter; | |
1631 | ||
6d751be4 | 1632 | if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) { |
5d1f5b8c JK |
1633 | static int ref_paranoia = -1; |
1634 | ||
6d751be4 | 1635 | if (ref_paranoia < 0) |
968f12fd | 1636 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 1); |
6d751be4 JK |
1637 | if (ref_paranoia) { |
1638 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1639 | flags |= DO_FOR_EACH_OMIT_DANGLING_SYMREFS; | |
1640 | } | |
1641 | } | |
0a0865b8 | 1642 | |
b269ac53 | 1643 | iter = refs->be->iterator_begin(refs, prefix, exclude_patterns, flags); |
c7599718 MH |
1644 | /* |
1645 | * `iterator_begin()` already takes care of prefix, but we | |
1646 | * might need to do some trimming: | |
1647 | */ | |
1648 | if (trim) | |
1649 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb MH |
1650 | |
1651 | return iter; | |
1652 | } | |
1653 | ||
4c4de895 MH |
1654 | /* |
1655 | * Call fn for each reference in the specified submodule for which the | |
1656 | * refname begins with prefix. If trim is non-zero, then trim that | |
1657 | * many characters off the beginning of each refname before passing | |
1658 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1659 | * include broken references in the iteration. If fn ever returns a | |
1660 | * non-zero value, stop the iteration and return that value; | |
1661 | * otherwise, return 0. | |
1662 | */ | |
4a6067cd SB |
1663 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1664 | each_repo_ref_fn fn, int trim, int flags, | |
1665 | void *cb_data) | |
1666 | { | |
1667 | struct ref_iterator *iter; | |
1668 | struct ref_store *refs = get_main_ref_store(r); | |
1669 | ||
1670 | if (!refs) | |
1671 | return 0; | |
1672 | ||
b269ac53 | 1673 | iter = refs_ref_iterator_begin(refs, prefix, NULL, trim, flags); |
4a6067cd SB |
1674 | |
1675 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1676 | } | |
1677 | ||
1678 | struct do_for_each_ref_help { | |
1679 | each_ref_fn *fn; | |
1680 | void *cb_data; | |
1681 | }; | |
1682 | ||
1779deed | 1683 | static int do_for_each_ref_helper(struct repository *r UNUSED, |
4a6067cd SB |
1684 | const char *refname, |
1685 | const struct object_id *oid, | |
1686 | int flags, | |
1687 | void *cb_data) | |
1688 | { | |
1689 | struct do_for_each_ref_help *hp = cb_data; | |
1690 | ||
1691 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1692 | } | |
1693 | ||
7d2df051 | 1694 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
b269ac53 | 1695 | const char **exclude_patterns, |
9aab952e JK |
1696 | each_ref_fn fn, int trim, |
1697 | enum do_for_each_ref_flags flags, void *cb_data) | |
4c4de895 MH |
1698 | { |
1699 | struct ref_iterator *iter; | |
4a6067cd | 1700 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1701 | |
00eebe35 MH |
1702 | if (!refs) |
1703 | return 0; | |
1704 | ||
b269ac53 TB |
1705 | iter = refs_ref_iterator_begin(refs, prefix, exclude_patterns, trim, |
1706 | flags); | |
4c4de895 | 1707 | |
4a6067cd SB |
1708 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1709 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1710 | } |
1711 | ||
7d2df051 NTND |
1712 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1713 | { | |
b269ac53 | 1714 | return do_for_each_ref(refs, "", NULL, fn, 0, 0, cb_data); |
7d2df051 NTND |
1715 | } |
1716 | ||
93770590 DT |
1717 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1718 | { | |
23a3f0cb | 1719 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1720 | } |
1721 | ||
7d2df051 NTND |
1722 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1723 | each_ref_fn fn, void *cb_data) | |
1724 | { | |
b269ac53 | 1725 | return do_for_each_ref(refs, prefix, NULL, fn, strlen(prefix), 0, cb_data); |
93770590 DT |
1726 | } |
1727 | ||
1728 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1729 | { | |
23a3f0cb | 1730 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1731 | } |
1732 | ||
67985e4e | 1733 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data) |
93770590 | 1734 | { |
23a3f0cb | 1735 | return do_for_each_ref(get_main_ref_store(the_repository), |
b269ac53 | 1736 | prefix, NULL, fn, 0, 0, cb_data); |
93770590 DT |
1737 | } |
1738 | ||
073cf63c | 1739 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
b269ac53 | 1740 | const char **exclude_patterns, |
67985e4e | 1741 | each_ref_fn fn, void *cb_data) |
03df567f | 1742 | { |
b269ac53 | 1743 | return do_for_each_ref(refs, prefix, exclude_patterns, fn, 0, 0, cb_data); |
03df567f MH |
1744 | } |
1745 | ||
212e0f7e | 1746 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1747 | { |
97e61e0f | 1748 | const char *git_replace_ref_base = ref_namespace[NAMESPACE_REPLACE].ref; |
212e0f7e SB |
1749 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1750 | strlen(git_replace_ref_base), | |
1751 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1752 | } |
1753 | ||
e6bf24d3 TB |
1754 | int for_each_namespaced_ref(const char **exclude_patterns, |
1755 | each_ref_fn fn, void *cb_data) | |
93770590 DT |
1756 | { |
1757 | struct strbuf buf = STRBUF_INIT; | |
1758 | int ret; | |
1759 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1760 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
e6bf24d3 | 1761 | buf.buf, exclude_patterns, fn, 0, 0, cb_data); |
93770590 DT |
1762 | strbuf_release(&buf); |
1763 | return ret; | |
1764 | } | |
1765 | ||
7d2df051 | 1766 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1767 | { |
b269ac53 | 1768 | return do_for_each_ref(refs, "", NULL, fn, 0, |
93770590 DT |
1769 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1770 | } | |
2d0663b2 | 1771 | |
7d2df051 NTND |
1772 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1773 | { | |
23a3f0cb | 1774 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1775 | } |
1776 | ||
d0f00c1a KN |
1777 | int refs_for_each_include_root_refs(struct ref_store *refs, each_ref_fn fn, |
1778 | void *cb_data) | |
1779 | { | |
1780 | return do_for_each_ref(refs, "", NULL, fn, 0, | |
1781 | DO_FOR_EACH_INCLUDE_ROOT_REFS, cb_data); | |
7d2df051 NTND |
1782 | } |
1783 | ||
16b1985b TB |
1784 | static int qsort_strcmp(const void *va, const void *vb) |
1785 | { | |
1786 | const char *a = *(const char **)va; | |
1787 | const char *b = *(const char **)vb; | |
1788 | ||
1789 | return strcmp(a, b); | |
1790 | } | |
1791 | ||
1792 | static void find_longest_prefixes_1(struct string_list *out, | |
1793 | struct strbuf *prefix, | |
1794 | const char **patterns, size_t nr) | |
1795 | { | |
1796 | size_t i; | |
1797 | ||
1798 | for (i = 0; i < nr; i++) { | |
1799 | char c = patterns[i][prefix->len]; | |
1800 | if (!c || is_glob_special(c)) { | |
1801 | string_list_append(out, prefix->buf); | |
1802 | return; | |
1803 | } | |
1804 | } | |
1805 | ||
1806 | i = 0; | |
1807 | while (i < nr) { | |
1808 | size_t end; | |
1809 | ||
1810 | /* | |
1811 | * Set "end" to the index of the element _after_ the last one | |
1812 | * in our group. | |
1813 | */ | |
1814 | for (end = i + 1; end < nr; end++) { | |
1815 | if (patterns[i][prefix->len] != patterns[end][prefix->len]) | |
1816 | break; | |
1817 | } | |
1818 | ||
1819 | strbuf_addch(prefix, patterns[i][prefix->len]); | |
1820 | find_longest_prefixes_1(out, prefix, patterns + i, end - i); | |
1821 | strbuf_setlen(prefix, prefix->len - 1); | |
1822 | ||
1823 | i = end; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | static void find_longest_prefixes(struct string_list *out, | |
1828 | const char **patterns) | |
1829 | { | |
1830 | struct strvec sorted = STRVEC_INIT; | |
1831 | struct strbuf prefix = STRBUF_INIT; | |
1832 | ||
1833 | strvec_pushv(&sorted, patterns); | |
1834 | QSORT(sorted.v, sorted.nr, qsort_strcmp); | |
1835 | ||
1836 | find_longest_prefixes_1(out, &prefix, sorted.v, sorted.nr); | |
1837 | ||
1838 | strvec_clear(&sorted); | |
1839 | strbuf_release(&prefix); | |
1840 | } | |
1841 | ||
91e2ab15 JK |
1842 | int refs_for_each_fullref_in_prefixes(struct ref_store *ref_store, |
1843 | const char *namespace, | |
1844 | const char **patterns, | |
b269ac53 | 1845 | const char **exclude_patterns, |
91e2ab15 | 1846 | each_ref_fn fn, void *cb_data) |
16b1985b TB |
1847 | { |
1848 | struct string_list prefixes = STRING_LIST_INIT_DUP; | |
1849 | struct string_list_item *prefix; | |
1850 | struct strbuf buf = STRBUF_INIT; | |
1851 | int ret = 0, namespace_len; | |
1852 | ||
1853 | find_longest_prefixes(&prefixes, patterns); | |
1854 | ||
1855 | if (namespace) | |
1856 | strbuf_addstr(&buf, namespace); | |
1857 | namespace_len = buf.len; | |
1858 | ||
1859 | for_each_string_list_item(prefix, &prefixes) { | |
1860 | strbuf_addstr(&buf, prefix->string); | |
b269ac53 TB |
1861 | ret = refs_for_each_fullref_in(ref_store, buf.buf, |
1862 | exclude_patterns, fn, cb_data); | |
16b1985b TB |
1863 | if (ret) |
1864 | break; | |
1865 | strbuf_setlen(&buf, namespace_len); | |
1866 | } | |
1867 | ||
1868 | string_list_clear(&prefixes, 0); | |
1869 | strbuf_release(&buf); | |
1870 | return ret; | |
1871 | } | |
1872 | ||
e8115302 HWN |
1873 | static int refs_read_special_head(struct ref_store *ref_store, |
1874 | const char *refname, struct object_id *oid, | |
df3458e9 HWN |
1875 | struct strbuf *referent, unsigned int *type, |
1876 | int *failure_errno) | |
e8115302 HWN |
1877 | { |
1878 | struct strbuf full_path = STRBUF_INIT; | |
1879 | struct strbuf content = STRBUF_INIT; | |
1880 | int result = -1; | |
1881 | strbuf_addf(&full_path, "%s/%s", ref_store->gitdir, refname); | |
1882 | ||
668cdc04 PS |
1883 | if (strbuf_read_file(&content, full_path.buf, 0) < 0) { |
1884 | *failure_errno = errno; | |
e8115302 | 1885 | goto done; |
668cdc04 | 1886 | } |
e8115302 | 1887 | |
df3458e9 HWN |
1888 | result = parse_loose_ref_contents(content.buf, oid, referent, type, |
1889 | failure_errno); | |
e8115302 HWN |
1890 | |
1891 | done: | |
1892 | strbuf_release(&full_path); | |
1893 | strbuf_release(&content); | |
1894 | return result; | |
1895 | } | |
1896 | ||
70c70de6 PS |
1897 | static int is_special_ref(const char *refname) |
1898 | { | |
1899 | /* | |
2cd33f44 PS |
1900 | * Special references are refs that have different semantics compared |
1901 | * to "normal" refs. These refs can thus not be stored in the ref | |
1902 | * backend, but must always be accessed via the filesystem. The | |
1903 | * following refs are special: | |
70c70de6 PS |
1904 | * |
1905 | * - FETCH_HEAD may contain multiple object IDs, and each one of them | |
1906 | * carries additional metadata like where it came from. | |
1907 | * | |
1908 | * - MERGE_HEAD may contain multiple object IDs when merging multiple | |
1909 | * heads. | |
1910 | * | |
2cd33f44 PS |
1911 | * Reading, writing or deleting references must consistently go either |
1912 | * through the filesystem (special refs) or through the reference | |
1913 | * backend (normal ones). | |
70c70de6 PS |
1914 | */ |
1915 | static const char * const special_refs[] = { | |
70c70de6 | 1916 | "FETCH_HEAD", |
70c70de6 PS |
1917 | "MERGE_HEAD", |
1918 | }; | |
1919 | size_t i; | |
1920 | ||
1921 | for (i = 0; i < ARRAY_SIZE(special_refs); i++) | |
1922 | if (!strcmp(refname, special_refs[i])) | |
1923 | return 1; | |
1924 | ||
1925 | return 0; | |
1926 | } | |
1927 | ||
8b72fea7 HWN |
1928 | int refs_read_raw_ref(struct ref_store *ref_store, const char *refname, |
1929 | struct object_id *oid, struct strbuf *referent, | |
1930 | unsigned int *type, int *failure_errno) | |
470be518 | 1931 | { |
8b72fea7 | 1932 | assert(failure_errno); |
70c70de6 | 1933 | if (is_special_ref(refname)) |
e8115302 | 1934 | return refs_read_special_head(ref_store, refname, oid, referent, |
df3458e9 | 1935 | type, failure_errno); |
e8115302 HWN |
1936 | |
1937 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, | |
8b72fea7 | 1938 | type, failure_errno); |
470be518 MH |
1939 | } |
1940 | ||
cd475b3b PS |
1941 | int refs_read_symbolic_ref(struct ref_store *ref_store, const char *refname, |
1942 | struct strbuf *referent) | |
1943 | { | |
5b875404 | 1944 | return ref_store->be->read_symbolic_ref(ref_store, refname, referent); |
cd475b3b PS |
1945 | } |
1946 | ||
7d2df051 | 1947 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1948 | const char *refname, |
1949 | int resolve_flags, | |
ef18119d | 1950 | struct object_id *oid, |
ce14de03 | 1951 | int *flags) |
2d0663b2 DT |
1952 | { |
1953 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1954 | struct object_id unused_oid; |
2d0663b2 DT |
1955 | int unused_flags; |
1956 | int symref_count; | |
1957 | ||
49e61479 | 1958 | if (!oid) |
1959 | oid = &unused_oid; | |
2d0663b2 DT |
1960 | if (!flags) |
1961 | flags = &unused_flags; | |
1962 | ||
1963 | *flags = 0; | |
1964 | ||
1965 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1966 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
ce14de03 | 1967 | !refname_is_safe(refname)) |
2d0663b2 | 1968 | return NULL; |
2d0663b2 DT |
1969 | |
1970 | /* | |
c7c33f50 | 1971 | * repo_dwim_ref() uses REF_ISBROKEN to distinguish between |
2d0663b2 DT |
1972 | * missing refs and refs that were present but invalid, |
1973 | * to complain about the latter to stderr. | |
1974 | * | |
1975 | * We don't know whether the ref exists, so don't set | |
1976 | * REF_ISBROKEN yet. | |
1977 | */ | |
1978 | *flags |= REF_BAD_NAME; | |
1979 | } | |
1980 | ||
1981 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1982 | unsigned int read_flags = 0; | |
ce14de03 | 1983 | int failure_errno; |
2d0663b2 | 1984 | |
8b72fea7 | 1985 | if (refs_read_raw_ref(refs, refname, oid, &sb_refname, |
ce14de03 | 1986 | &read_flags, &failure_errno)) { |
2d0663b2 | 1987 | *flags |= read_flags; |
a1c1d817 JK |
1988 | |
1989 | /* In reading mode, refs must eventually resolve */ | |
1990 | if (resolve_flags & RESOLVE_REF_READING) | |
1991 | return NULL; | |
1992 | ||
1993 | /* | |
1994 | * Otherwise a missing ref is OK. But the files backend | |
1995 | * may show errors besides ENOENT if there are | |
1996 | * similarly-named refs. | |
1997 | */ | |
ce14de03 ÆAB |
1998 | if (failure_errno != ENOENT && |
1999 | failure_errno != EISDIR && | |
2000 | failure_errno != ENOTDIR) | |
2d0663b2 | 2001 | return NULL; |
a1c1d817 | 2002 | |
49e61479 | 2003 | oidclr(oid); |
2d0663b2 DT |
2004 | if (*flags & REF_BAD_NAME) |
2005 | *flags |= REF_ISBROKEN; | |
2006 | return refname; | |
2007 | } | |
2008 | ||
2009 | *flags |= read_flags; | |
2010 | ||
2011 | if (!(read_flags & REF_ISSYMREF)) { | |
2012 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 2013 | oidclr(oid); |
2d0663b2 DT |
2014 | *flags |= REF_ISBROKEN; |
2015 | } | |
2016 | return refname; | |
2017 | } | |
2018 | ||
2019 | refname = sb_refname.buf; | |
2020 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 2021 | oidclr(oid); |
2d0663b2 DT |
2022 | return refname; |
2023 | } | |
2024 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
2025 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
ce14de03 | 2026 | !refname_is_safe(refname)) |
2d0663b2 | 2027 | return NULL; |
2d0663b2 DT |
2028 | |
2029 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
2030 | } | |
2031 | } | |
2032 | ||
2d0663b2 DT |
2033 | return NULL; |
2034 | } | |
00eebe35 | 2035 | |
6fb5acfd | 2036 | /* backend functions */ |
2e573d61 | 2037 | int refs_init_db(struct ref_store *refs, int flags, struct strbuf *err) |
6fb5acfd | 2038 | { |
2e573d61 | 2039 | return refs->be->init_db(refs, flags, err); |
6fb5acfd DT |
2040 | } |
2041 | ||
bd40dcda | 2042 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 2043 | struct object_id *oid, int *flags) |
bd40dcda | 2044 | { |
23a3f0cb | 2045 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
ce14de03 | 2046 | resolve_flags, oid, flags); |
bd40dcda MH |
2047 | } |
2048 | ||
a8355bb7 | 2049 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 2050 | struct object_id *oid) |
424dcc76 | 2051 | { |
424dcc76 MH |
2052 | struct ref_store *refs; |
2053 | int flags; | |
2054 | ||
29babbee | 2055 | refs = get_submodule_ref_store(submodule); |
48a8475f | 2056 | |
424dcc76 MH |
2057 | if (!refs) |
2058 | return -1; | |
2059 | ||
ce14de03 ÆAB |
2060 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
2061 | is_null_oid(oid)) | |
424dcc76 MH |
2062 | return -1; |
2063 | return 0; | |
2064 | } | |
2065 | ||
0c064d90 | 2066 | struct ref_store_hash_entry |
7d4558c4 | 2067 | { |
e2b5038d | 2068 | struct hashmap_entry ent; |
7d4558c4 MH |
2069 | |
2070 | struct ref_store *refs; | |
2071 | ||
0c064d90 NTND |
2072 | /* NUL-terminated identifier of the ref store: */ |
2073 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
2074 | }; |
2075 | ||
5cf88fd8 | 2076 | static int ref_store_hash_cmp(const void *cmp_data UNUSED, |
939af16e EW |
2077 | const struct hashmap_entry *eptr, |
2078 | const struct hashmap_entry *entry_or_key, | |
7d4558c4 MH |
2079 | const void *keydata) |
2080 | { | |
939af16e EW |
2081 | const struct ref_store_hash_entry *e1, *e2; |
2082 | const char *name; | |
2083 | ||
2084 | e1 = container_of(eptr, const struct ref_store_hash_entry, ent); | |
2085 | e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent); | |
2086 | name = keydata ? keydata : e2->name; | |
7d4558c4 | 2087 | |
0c064d90 | 2088 | return strcmp(e1->name, name); |
7d4558c4 MH |
2089 | } |
2090 | ||
0c064d90 NTND |
2091 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
2092 | const char *name, struct ref_store *refs) | |
7d4558c4 | 2093 | { |
0c064d90 | 2094 | struct ref_store_hash_entry *entry; |
7d4558c4 | 2095 | |
0c064d90 | 2096 | FLEX_ALLOC_STR(entry, name, name); |
d22245a2 | 2097 | hashmap_entry_init(&entry->ent, strhash(name)); |
7d4558c4 MH |
2098 | entry->refs = refs; |
2099 | return entry; | |
2100 | } | |
2101 | ||
7d4558c4 MH |
2102 | /* A hashmap of ref_stores, stored by submodule name: */ |
2103 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 2104 | |
17eff96b NTND |
2105 | /* A hashmap of ref_stores, stored by worktree id: */ |
2106 | static struct hashmap worktree_ref_stores; | |
2107 | ||
c468da4e | 2108 | /* |
0c064d90 NTND |
2109 | * Look up a ref store by name. If that ref_store hasn't been |
2110 | * registered yet, return NULL. | |
c468da4e | 2111 | */ |
0c064d90 NTND |
2112 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
2113 | const char *name) | |
00eebe35 | 2114 | { |
0c064d90 | 2115 | struct ref_store_hash_entry *entry; |
f23a4651 | 2116 | unsigned int hash; |
00eebe35 | 2117 | |
0c064d90 | 2118 | if (!map->tablesize) |
7d4558c4 MH |
2119 | /* It's initialized on demand in register_ref_store(). */ |
2120 | return NULL; | |
620a66b9 | 2121 | |
f23a4651 EW |
2122 | hash = strhash(name); |
2123 | entry = hashmap_get_entry_from_hash(map, hash, name, | |
2124 | struct ref_store_hash_entry, ent); | |
7d4558c4 | 2125 | return entry ? entry->refs : NULL; |
00eebe35 MH |
2126 | } |
2127 | ||
c468da4e MH |
2128 | /* |
2129 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 2130 | * gitdir. |
c468da4e | 2131 | */ |
34224e14 JT |
2132 | static struct ref_store *ref_store_init(struct repository *repo, |
2133 | const char *gitdir, | |
9e7ec634 | 2134 | unsigned int flags) |
00eebe35 | 2135 | { |
173761e2 | 2136 | const struct ref_storage_be *be; |
ba88add5 | 2137 | struct ref_store *refs; |
00eebe35 | 2138 | |
173761e2 | 2139 | be = find_ref_storage_backend(repo->ref_storage_format); |
00eebe35 | 2140 | if (!be) |
0fcc285c | 2141 | BUG("reference backend is unknown"); |
00eebe35 | 2142 | |
34224e14 | 2143 | refs = be->init(repo, gitdir, flags); |
ba88add5 | 2144 | return refs; |
00eebe35 MH |
2145 | } |
2146 | ||
64a74161 | 2147 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 2148 | { |
02204610 JK |
2149 | if (r->refs_private) |
2150 | return r->refs_private; | |
24c8407e | 2151 | |
2dc417ab JK |
2152 | if (!r->gitdir) |
2153 | BUG("attempting to get main_ref_store outside of repository"); | |
2154 | ||
34224e14 | 2155 | r->refs_private = ref_store_init(r, r->gitdir, REF_STORE_ALL_CAPS); |
4441f427 | 2156 | r->refs_private = maybe_debug_wrap_ref_store(r->gitdir, r->refs_private); |
02204610 | 2157 | return r->refs_private; |
378dc910 NTND |
2158 | } |
2159 | ||
2160 | /* | |
0c064d90 NTND |
2161 | * Associate a ref store with a name. It is a fatal error to call this |
2162 | * function twice for the same name. | |
378dc910 | 2163 | */ |
0c064d90 NTND |
2164 | static void register_ref_store_map(struct hashmap *map, |
2165 | const char *type, | |
2166 | struct ref_store *refs, | |
2167 | const char *name) | |
378dc910 | 2168 | { |
26b455f2 EW |
2169 | struct ref_store_hash_entry *entry; |
2170 | ||
0c064d90 | 2171 | if (!map->tablesize) |
7663cdc8 | 2172 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 2173 | |
26b455f2 EW |
2174 | entry = alloc_ref_store_hash_entry(name, refs); |
2175 | if (hashmap_put(map, &entry->ent)) | |
033abf97 | 2176 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
2177 | } |
2178 | ||
18d0002d | 2179 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 2180 | { |
126c9e05 | 2181 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 2182 | struct ref_store *refs; |
29babbee NTND |
2183 | char *to_free = NULL; |
2184 | size_t len; | |
34224e14 | 2185 | struct repository *subrepo; |
00eebe35 | 2186 | |
82a150f2 NTND |
2187 | if (!submodule) |
2188 | return NULL; | |
2189 | ||
873ea90d NTND |
2190 | len = strlen(submodule); |
2191 | while (len && is_dir_sep(submodule[len - 1])) | |
2192 | len--; | |
2193 | if (!len) | |
2194 | return NULL; | |
00eebe35 | 2195 | |
29babbee NTND |
2196 | if (submodule[len]) |
2197 | /* We need to strip off one or more trailing slashes */ | |
2198 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 2199 | |
0c064d90 | 2200 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 2201 | if (refs) |
2c616c17 | 2202 | goto done; |
00eebe35 | 2203 | |
126c9e05 | 2204 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
2205 | if (!is_nonbare_repository_dir(&submodule_sb)) |
2206 | goto done; | |
00eebe35 | 2207 | |
2c616c17 NTND |
2208 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
2209 | goto done; | |
00eebe35 | 2210 | |
34224e14 JT |
2211 | subrepo = xmalloc(sizeof(*subrepo)); |
2212 | /* | |
2213 | * NEEDSWORK: Make get_submodule_ref_store() work with arbitrary | |
2214 | * superprojects other than the_repository. This probably should be | |
2215 | * done by making it take a struct repository * parameter instead of a | |
2216 | * submodule path. | |
2217 | */ | |
2218 | if (repo_submodule_init(subrepo, the_repository, submodule, | |
2219 | null_oid())) { | |
2220 | free(subrepo); | |
2221 | goto done; | |
2222 | } | |
2223 | refs = ref_store_init(subrepo, submodule_sb.buf, | |
9e7ec634 | 2224 | REF_STORE_READ | REF_STORE_ODB); |
0c064d90 NTND |
2225 | register_ref_store_map(&submodule_ref_stores, "submodule", |
2226 | refs, submodule); | |
5d0bc90e | 2227 | |
2c616c17 | 2228 | done: |
5d0bc90e | 2229 | strbuf_release(&submodule_sb); |
29babbee NTND |
2230 | free(to_free); |
2231 | ||
00eebe35 MH |
2232 | return refs; |
2233 | } | |
2234 | ||
17eff96b NTND |
2235 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
2236 | { | |
2237 | struct ref_store *refs; | |
2238 | const char *id; | |
2239 | ||
2240 | if (wt->is_current) | |
23a3f0cb | 2241 | return get_main_ref_store(the_repository); |
17eff96b NTND |
2242 | |
2243 | id = wt->id ? wt->id : "/"; | |
2244 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
2245 | if (refs) | |
2246 | return refs; | |
2247 | ||
2248 | if (wt->id) | |
34224e14 JT |
2249 | refs = ref_store_init(the_repository, |
2250 | git_common_path("worktrees/%s", wt->id), | |
17eff96b NTND |
2251 | REF_STORE_ALL_CAPS); |
2252 | else | |
34224e14 JT |
2253 | refs = ref_store_init(the_repository, |
2254 | get_git_common_dir(), | |
17eff96b NTND |
2255 | REF_STORE_ALL_CAPS); |
2256 | ||
2257 | if (refs) | |
2258 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
2259 | refs, id); | |
2260 | return refs; | |
2261 | } | |
2262 | ||
f9f7fd3b HWN |
2263 | void base_ref_store_init(struct ref_store *refs, struct repository *repo, |
2264 | const char *path, const struct ref_storage_be *be) | |
00eebe35 | 2265 | { |
620a66b9 | 2266 | refs->be = be; |
f9f7fd3b HWN |
2267 | refs->repo = repo; |
2268 | refs->gitdir = xstrdup(path); | |
00eebe35 | 2269 | } |
127b42a1 RS |
2270 | |
2271 | /* backend functions */ | |
826ae79f | 2272 | int refs_pack_refs(struct ref_store *refs, struct pack_refs_opts *opts) |
8231527e | 2273 | { |
826ae79f | 2274 | return refs->be->pack_refs(refs, opts); |
8231527e MH |
2275 | } |
2276 | ||
36a31792 | 2277 | int peel_iterated_oid(const struct object_id *base, struct object_id *peeled) |
7d2df051 | 2278 | { |
36a31792 JK |
2279 | if (current_ref_iter && |
2280 | (current_ref_iter->oid == base || | |
2281 | oideq(current_ref_iter->oid, base))) | |
2282 | return ref_iterator_peel(current_ref_iter, peeled); | |
ba1c052f | 2283 | |
617480d7 | 2284 | return peel_object(base, peeled) ? -1 : 0; |
7d2df051 | 2285 | } |
bd427cf2 | 2286 | |
7d2df051 NTND |
2287 | int refs_create_symref(struct ref_store *refs, |
2288 | const char *ref_target, | |
2289 | const char *refs_heads_master, | |
2290 | const char *logmsg) | |
2291 | { | |
523fa69c JH |
2292 | char *msg; |
2293 | int retval; | |
2294 | ||
2295 | msg = normalize_reflog_message(logmsg); | |
2296 | retval = refs->be->create_symref(refs, ref_target, refs_heads_master, | |
2297 | msg); | |
2298 | free(msg); | |
2299 | return retval; | |
bd427cf2 MH |
2300 | } |
2301 | ||
284689ba MH |
2302 | int create_symref(const char *ref_target, const char *refs_heads_master, |
2303 | const char *logmsg) | |
2304 | { | |
23a3f0cb | 2305 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 2306 | refs_heads_master, logmsg); |
284689ba MH |
2307 | } |
2308 | ||
2ced105c MH |
2309 | int ref_update_reject_duplicates(struct string_list *refnames, |
2310 | struct strbuf *err) | |
2311 | { | |
a552e50e | 2312 | size_t i, n = refnames->nr; |
2ced105c MH |
2313 | |
2314 | assert(err); | |
2315 | ||
8556f8d6 MH |
2316 | for (i = 1; i < n; i++) { |
2317 | int cmp = strcmp(refnames->items[i - 1].string, | |
2318 | refnames->items[i].string); | |
2319 | ||
2320 | if (!cmp) { | |
2ced105c | 2321 | strbuf_addf(err, |
661558f0 | 2322 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
2323 | refnames->items[i].string); |
2324 | return 1; | |
8556f8d6 | 2325 | } else if (cmp > 0) { |
033abf97 | 2326 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 2327 | } |
8556f8d6 | 2328 | } |
2ced105c MH |
2329 | return 0; |
2330 | } | |
2331 | ||
67541597 PS |
2332 | static int run_transaction_hook(struct ref_transaction *transaction, |
2333 | const char *state) | |
2334 | { | |
2335 | struct child_process proc = CHILD_PROCESS_INIT; | |
2336 | struct strbuf buf = STRBUF_INIT; | |
0a0fbbe3 | 2337 | const char *hook; |
67541597 PS |
2338 | int ret = 0, i; |
2339 | ||
0a0fbbe3 | 2340 | hook = find_hook("reference-transaction"); |
67541597 | 2341 | if (!hook) |
67541597 | 2342 | return ret; |
67541597 | 2343 | |
c972bf4c | 2344 | strvec_pushl(&proc.args, hook, state, NULL); |
67541597 PS |
2345 | proc.in = -1; |
2346 | proc.stdout_to_stderr = 1; | |
2347 | proc.trace2_hook_name = "reference-transaction"; | |
2348 | ||
2349 | ret = start_command(&proc); | |
2350 | if (ret) | |
2351 | return ret; | |
2352 | ||
2353 | sigchain_push(SIGPIPE, SIG_IGN); | |
2354 | ||
2355 | for (i = 0; i < transaction->nr; i++) { | |
2356 | struct ref_update *update = transaction->updates[i]; | |
2357 | ||
2358 | strbuf_reset(&buf); | |
a8ae923f KN |
2359 | |
2360 | if (!(update->flags & REF_HAVE_OLD)) | |
2361 | strbuf_addf(&buf, "%s ", oid_to_hex(null_oid())); | |
2362 | else if (update->old_target) | |
2363 | strbuf_addf(&buf, "ref:%s ", update->old_target); | |
2364 | else | |
2365 | strbuf_addf(&buf, "%s ", oid_to_hex(&update->old_oid)); | |
2366 | ||
2367 | if (!(update->flags & REF_HAVE_NEW)) | |
2368 | strbuf_addf(&buf, "%s ", oid_to_hex(null_oid())); | |
2369 | else if (update->new_target) | |
2370 | strbuf_addf(&buf, "ref:%s ", update->new_target); | |
2371 | else | |
2372 | strbuf_addf(&buf, "%s ", oid_to_hex(&update->new_oid)); | |
2373 | ||
2374 | strbuf_addf(&buf, "%s\n", update->refname); | |
67541597 PS |
2375 | |
2376 | if (write_in_full(proc.in, buf.buf, buf.len) < 0) { | |
4755d7df ÆAB |
2377 | if (errno != EPIPE) { |
2378 | /* Don't leak errno outside this API */ | |
2379 | errno = 0; | |
67541597 | 2380 | ret = -1; |
4755d7df | 2381 | } |
67541597 PS |
2382 | break; |
2383 | } | |
2384 | } | |
2385 | ||
2386 | close(proc.in); | |
2387 | sigchain_pop(SIGPIPE); | |
2388 | strbuf_release(&buf); | |
2389 | ||
2390 | ret |= finish_command(&proc); | |
2391 | return ret; | |
2392 | } | |
2393 | ||
30173b88 MH |
2394 | int ref_transaction_prepare(struct ref_transaction *transaction, |
2395 | struct strbuf *err) | |
127b42a1 | 2396 | { |
c0fe4e8b | 2397 | struct ref_store *refs = transaction->ref_store; |
67541597 | 2398 | int ret; |
127b42a1 | 2399 | |
8d4240d3 MH |
2400 | switch (transaction->state) { |
2401 | case REF_TRANSACTION_OPEN: | |
2402 | /* Good. */ | |
2403 | break; | |
30173b88 | 2404 | case REF_TRANSACTION_PREPARED: |
033abf97 | 2405 | BUG("prepare called twice on reference transaction"); |
30173b88 | 2406 | break; |
8d4240d3 | 2407 | case REF_TRANSACTION_CLOSED: |
033abf97 | 2408 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
2409 | break; |
2410 | default: | |
033abf97 | 2411 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
2412 | break; |
2413 | } | |
2414 | ||
ecd81dfc | 2415 | if (refs->repo->objects->odb->disable_ref_updates) { |
d8f4481c JK |
2416 | strbuf_addstr(err, |
2417 | _("ref updates forbidden inside quarantine environment")); | |
2418 | return -1; | |
2419 | } | |
2420 | ||
67541597 PS |
2421 | ret = refs->be->transaction_prepare(refs, transaction, err); |
2422 | if (ret) | |
2423 | return ret; | |
2424 | ||
2425 | ret = run_transaction_hook(transaction, "prepared"); | |
2426 | if (ret) { | |
2427 | ref_transaction_abort(transaction, err); | |
2428 | die(_("ref updates aborted by hook")); | |
2429 | } | |
2430 | ||
2431 | return 0; | |
30173b88 MH |
2432 | } |
2433 | ||
2434 | int ref_transaction_abort(struct ref_transaction *transaction, | |
2435 | struct strbuf *err) | |
2436 | { | |
2437 | struct ref_store *refs = transaction->ref_store; | |
2438 | int ret = 0; | |
2439 | ||
2440 | switch (transaction->state) { | |
2441 | case REF_TRANSACTION_OPEN: | |
2442 | /* No need to abort explicitly. */ | |
2443 | break; | |
2444 | case REF_TRANSACTION_PREPARED: | |
2445 | ret = refs->be->transaction_abort(refs, transaction, err); | |
2446 | break; | |
2447 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2448 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
2449 | break; |
2450 | default: | |
033abf97 | 2451 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2452 | break; |
2453 | } | |
2454 | ||
67541597 PS |
2455 | run_transaction_hook(transaction, "aborted"); |
2456 | ||
30173b88 MH |
2457 | ref_transaction_free(transaction); |
2458 | return ret; | |
2459 | } | |
2460 | ||
2461 | int ref_transaction_commit(struct ref_transaction *transaction, | |
2462 | struct strbuf *err) | |
2463 | { | |
2464 | struct ref_store *refs = transaction->ref_store; | |
2465 | int ret; | |
2466 | ||
2467 | switch (transaction->state) { | |
2468 | case REF_TRANSACTION_OPEN: | |
2469 | /* Need to prepare first. */ | |
2470 | ret = ref_transaction_prepare(transaction, err); | |
2471 | if (ret) | |
2472 | return ret; | |
2473 | break; | |
2474 | case REF_TRANSACTION_PREPARED: | |
2475 | /* Fall through to finish. */ | |
2476 | break; | |
2477 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2478 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2479 | break; |
2480 | default: | |
033abf97 | 2481 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2482 | break; |
2483 | } | |
2484 | ||
67541597 PS |
2485 | ret = refs->be->transaction_finish(refs, transaction, err); |
2486 | if (!ret) | |
2487 | run_transaction_hook(transaction, "committed"); | |
2488 | return ret; | |
127b42a1 | 2489 | } |
62665823 | 2490 | |
7d2df051 NTND |
2491 | int refs_verify_refname_available(struct ref_store *refs, |
2492 | const char *refname, | |
b05855b5 | 2493 | const struct string_list *extras, |
7d2df051 NTND |
2494 | const struct string_list *skip, |
2495 | struct strbuf *err) | |
62665823 | 2496 | { |
b05855b5 MH |
2497 | const char *slash; |
2498 | const char *extra_refname; | |
2499 | struct strbuf dirname = STRBUF_INIT; | |
2500 | struct strbuf referent = STRBUF_INIT; | |
2501 | struct object_id oid; | |
2502 | unsigned int type; | |
2503 | struct ref_iterator *iter; | |
2504 | int ok; | |
2505 | int ret = -1; | |
2506 | ||
2507 | /* | |
2508 | * For the sake of comments in this function, suppose that | |
2509 | * refname is "refs/foo/bar". | |
2510 | */ | |
2511 | ||
2512 | assert(err); | |
2513 | ||
2514 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2515 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
8b72fea7 HWN |
2516 | /* |
2517 | * Just saying "Is a directory" when we e.g. can't | |
2518 | * lock some multi-level ref isn't very informative, | |
2519 | * the user won't be told *what* is a directory, so | |
2520 | * let's not use strerror() below. | |
2521 | */ | |
2522 | int ignore_errno; | |
b05855b5 MH |
2523 | /* Expand dirname to the new prefix, not including the trailing slash: */ |
2524 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2525 | ||
2526 | /* | |
2527 | * We are still at a leading dir of the refname (e.g., | |
2528 | * "refs/foo"; if there is a reference with that name, | |
2529 | * it is a conflict, *unless* it is in skip. | |
2530 | */ | |
2531 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2532 | continue; | |
2533 | ||
8b72fea7 HWN |
2534 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, |
2535 | &type, &ignore_errno)) { | |
661558f0 | 2536 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2537 | dirname.buf, refname); |
2538 | goto cleanup; | |
2539 | } | |
2540 | ||
2541 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2542 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2543 | refname, dirname.buf); |
2544 | goto cleanup; | |
2545 | } | |
2546 | } | |
2547 | ||
2548 | /* | |
2549 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2550 | * There is no point in searching for a reference with that | |
2551 | * name, because a refname isn't considered to conflict with | |
2552 | * itself. But we still need to check for references whose | |
2553 | * names are in the "refs/foo/bar/" namespace, because they | |
2554 | * *do* conflict. | |
2555 | */ | |
2556 | strbuf_addstr(&dirname, refname + dirname.len); | |
2557 | strbuf_addch(&dirname, '/'); | |
2558 | ||
b269ac53 | 2559 | iter = refs_ref_iterator_begin(refs, dirname.buf, NULL, 0, |
b05855b5 MH |
2560 | DO_FOR_EACH_INCLUDE_BROKEN); |
2561 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2562 | if (skip && | |
2563 | string_list_has_string(skip, iter->refname)) | |
2564 | continue; | |
2565 | ||
661558f0 | 2566 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2567 | iter->refname, refname); |
2568 | ref_iterator_abort(iter); | |
2569 | goto cleanup; | |
2570 | } | |
2571 | ||
2572 | if (ok != ITER_DONE) | |
033abf97 | 2573 | BUG("error while iterating over references"); |
b05855b5 MH |
2574 | |
2575 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2576 | if (extra_refname) | |
661558f0 | 2577 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2578 | refname, extra_refname); |
2579 | else | |
2580 | ret = 0; | |
2581 | ||
2582 | cleanup: | |
2583 | strbuf_release(&referent); | |
2584 | strbuf_release(&dirname); | |
2585 | return ret; | |
62665823 | 2586 | } |
e3688bd6 | 2587 | |
31f89839 PS |
2588 | struct do_for_each_reflog_help { |
2589 | each_reflog_fn *fn; | |
2590 | void *cb_data; | |
2591 | }; | |
2592 | ||
2593 | static int do_for_each_reflog_helper(struct repository *r UNUSED, | |
2594 | const char *refname, | |
2595 | const struct object_id *oid UNUSED, | |
2596 | int flags, | |
2597 | void *cb_data) | |
2598 | { | |
2599 | struct do_for_each_reflog_help *hp = cb_data; | |
2600 | return hp->fn(refname, hp->cb_data); | |
2601 | } | |
2602 | ||
2603 | int refs_for_each_reflog(struct ref_store *refs, each_reflog_fn fn, void *cb_data) | |
e3688bd6 | 2604 | { |
e3688bd6 | 2605 | struct ref_iterator *iter; |
31f89839 | 2606 | struct do_for_each_reflog_help hp = { fn, cb_data }; |
e3688bd6 DT |
2607 | |
2608 | iter = refs->be->reflog_iterator_begin(refs); | |
2609 | ||
4a6067cd | 2610 | return do_for_each_repo_ref_iterator(the_repository, iter, |
31f89839 | 2611 | do_for_each_reflog_helper, &hp); |
e3688bd6 DT |
2612 | } |
2613 | ||
31f89839 | 2614 | int for_each_reflog(each_reflog_fn fn, void *cb_data) |
e3688bd6 | 2615 | { |
23a3f0cb | 2616 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2617 | } |
e3688bd6 | 2618 | |
7d2df051 NTND |
2619 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2620 | const char *refname, | |
2621 | each_reflog_ent_fn fn, | |
2622 | void *cb_data) | |
2623 | { | |
e3688bd6 DT |
2624 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2625 | fn, cb_data); | |
2626 | } | |
2627 | ||
7d2df051 NTND |
2628 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2629 | void *cb_data) | |
2630 | { | |
23a3f0cb | 2631 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2632 | refname, fn, cb_data); |
2633 | } | |
2634 | ||
2635 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2636 | each_reflog_ent_fn fn, void *cb_data) | |
2637 | { | |
2638 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2639 | } | |
2640 | ||
e3688bd6 DT |
2641 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2642 | void *cb_data) | |
2643 | { | |
23a3f0cb | 2644 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2645 | fn, cb_data); |
2646 | } | |
e3688bd6 | 2647 | |
7d2df051 NTND |
2648 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2649 | { | |
2650 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2651 | } |
2652 | ||
2653 | int reflog_exists(const char *refname) | |
2654 | { | |
23a3f0cb | 2655 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2656 | } |
e3688bd6 | 2657 | |
7d2df051 | 2658 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
7b089120 | 2659 | struct strbuf *err) |
7d2df051 | 2660 | { |
7b089120 | 2661 | return refs->be->create_reflog(refs, refname, err); |
e3688bd6 DT |
2662 | } |
2663 | ||
7b089120 | 2664 | int safe_create_reflog(const char *refname, struct strbuf *err) |
e3688bd6 | 2665 | { |
23a3f0cb | 2666 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7b089120 | 2667 | err); |
7d2df051 | 2668 | } |
e3688bd6 | 2669 | |
7d2df051 NTND |
2670 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2671 | { | |
2672 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2673 | } |
2674 | ||
2675 | int delete_reflog(const char *refname) | |
2676 | { | |
23a3f0cb | 2677 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2678 | } |
e3688bd6 | 2679 | |
7d2df051 | 2680 | int refs_reflog_expire(struct ref_store *refs, |
cc40b5ce | 2681 | const char *refname, |
7d2df051 NTND |
2682 | unsigned int flags, |
2683 | reflog_expiry_prepare_fn prepare_fn, | |
2684 | reflog_expiry_should_prune_fn should_prune_fn, | |
2685 | reflog_expiry_cleanup_fn cleanup_fn, | |
2686 | void *policy_cb_data) | |
2687 | { | |
cc40b5ce | 2688 | return refs->be->reflog_expire(refs, refname, flags, |
7d2df051 NTND |
2689 | prepare_fn, should_prune_fn, |
2690 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2691 | } |
2692 | ||
cc40b5ce | 2693 | int reflog_expire(const char *refname, |
e3688bd6 DT |
2694 | unsigned int flags, |
2695 | reflog_expiry_prepare_fn prepare_fn, | |
2696 | reflog_expiry_should_prune_fn should_prune_fn, | |
2697 | reflog_expiry_cleanup_fn cleanup_fn, | |
2698 | void *policy_cb_data) | |
2699 | { | |
23a3f0cb | 2700 | return refs_reflog_expire(get_main_ref_store(the_repository), |
cc40b5ce | 2701 | refname, flags, |
7d2df051 NTND |
2702 | prepare_fn, should_prune_fn, |
2703 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2704 | } |
fc681463 DT |
2705 | |
2706 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2707 | struct strbuf *err) | |
2708 | { | |
c0fe4e8b | 2709 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2710 | |
2711 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2712 | } | |
a27dcf89 | 2713 | |
4f2ba2d0 PS |
2714 | void ref_transaction_for_each_queued_update(struct ref_transaction *transaction, |
2715 | ref_transaction_for_each_queued_update_fn cb, | |
2716 | void *cb_data) | |
2717 | { | |
2718 | int i; | |
2719 | ||
2720 | for (i = 0; i < transaction->nr; i++) { | |
2721 | struct ref_update *update = transaction->updates[i]; | |
2722 | ||
2723 | cb(update->refname, | |
2724 | (update->flags & REF_HAVE_OLD) ? &update->old_oid : NULL, | |
2725 | (update->flags & REF_HAVE_NEW) ? &update->new_oid : NULL, | |
2726 | cb_data); | |
2727 | } | |
2728 | } | |
2729 | ||
523fa69c | 2730 | int refs_delete_refs(struct ref_store *refs, const char *logmsg, |
64da4199 | 2731 | struct string_list *refnames, unsigned int flags) |
a27dcf89 | 2732 | { |
d6f8e729 PS |
2733 | struct ref_transaction *transaction; |
2734 | struct strbuf err = STRBUF_INIT; | |
2735 | struct string_list_item *item; | |
2736 | int ret = 0, failures = 0; | |
523fa69c | 2737 | char *msg; |
d6f8e729 PS |
2738 | |
2739 | if (!refnames->nr) | |
2740 | return 0; | |
523fa69c JH |
2741 | |
2742 | msg = normalize_reflog_message(logmsg); | |
d6f8e729 PS |
2743 | |
2744 | /* | |
2745 | * Since we don't check the references' old_oids, the | |
2746 | * individual updates can't fail, so we can pack all of the | |
2747 | * updates into a single transaction. | |
2748 | */ | |
2749 | transaction = ref_store_transaction_begin(refs, &err); | |
2750 | if (!transaction) { | |
2751 | ret = error("%s", err.buf); | |
2752 | goto out; | |
2753 | } | |
2754 | ||
2755 | for_each_string_list_item(item, refnames) { | |
2756 | ret = ref_transaction_delete(transaction, item->string, | |
2757 | NULL, flags, msg, &err); | |
2758 | if (ret) { | |
2759 | warning(_("could not delete reference %s: %s"), | |
2760 | item->string, err.buf); | |
2761 | strbuf_reset(&err); | |
2762 | failures = 1; | |
2763 | } | |
2764 | } | |
2765 | ||
2766 | ret = ref_transaction_commit(transaction, &err); | |
2767 | if (ret) { | |
2768 | if (refnames->nr == 1) | |
2769 | error(_("could not delete reference %s: %s"), | |
2770 | refnames->items[0].string, err.buf); | |
2771 | else | |
2772 | error(_("could not delete references: %s"), err.buf); | |
2773 | } | |
2774 | ||
2775 | out: | |
2776 | if (!ret && failures) | |
2777 | ret = -1; | |
2778 | ref_transaction_free(transaction); | |
2779 | strbuf_release(&err); | |
523fa69c | 2780 | free(msg); |
d6f8e729 | 2781 | return ret; |
a27dcf89 | 2782 | } |
9b6b40d9 | 2783 | |
64da4199 MH |
2784 | int delete_refs(const char *msg, struct string_list *refnames, |
2785 | unsigned int flags) | |
9b6b40d9 | 2786 | { |
23a3f0cb | 2787 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2788 | } |
9b6b40d9 | 2789 | |
7d2df051 NTND |
2790 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2791 | const char *newref, const char *logmsg) | |
2792 | { | |
523fa69c JH |
2793 | char *msg; |
2794 | int retval; | |
2795 | ||
2796 | msg = normalize_reflog_message(logmsg); | |
2797 | retval = refs->be->rename_ref(refs, oldref, newref, msg); | |
2798 | free(msg); | |
2799 | return retval; | |
9b6b40d9 | 2800 | } |
7d2df051 NTND |
2801 | |
2802 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2803 | { | |
23a3f0cb | 2804 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2805 | } |
52d59cc6 SD |
2806 | |
2807 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2808 | const char *newref, const char *logmsg) | |
2809 | { | |
523fa69c JH |
2810 | char *msg; |
2811 | int retval; | |
2812 | ||
2813 | msg = normalize_reflog_message(logmsg); | |
2814 | retval = refs->be->copy_ref(refs, oldref, newref, msg); | |
2815 | free(msg); | |
2816 | return retval; | |
52d59cc6 SD |
2817 | } |
2818 | ||
2819 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2820 | { | |
23a3f0cb | 2821 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2822 | } |
e9965ba4 KN |
2823 | |
2824 | const char *ref_update_original_update_refname(struct ref_update *update) | |
2825 | { | |
2826 | while (update->parent_update) | |
2827 | update = update->parent_update; | |
2828 | ||
2829 | return update->refname; | |
2830 | } | |
644daf77 KN |
2831 | |
2832 | int ref_update_has_null_new_value(struct ref_update *update) | |
2833 | { | |
2834 | return !update->new_target && is_null_oid(&update->new_oid); | |
2835 | } | |
2836 | ||
2837 | int ref_update_check_old_target(const char *referent, struct ref_update *update, | |
2838 | struct strbuf *err) | |
2839 | { | |
2840 | if (!update->old_target) | |
2841 | BUG("called without old_target set"); | |
2842 | ||
2843 | if (!strcmp(referent, update->old_target)) | |
2844 | return 0; | |
2845 | ||
2846 | if (!strcmp(referent, "")) | |
2847 | strbuf_addf(err, "verifying symref target: '%s': " | |
2848 | "reference is missing but expected %s", | |
2849 | ref_update_original_update_refname(update), | |
2850 | update->old_target); | |
2851 | else | |
2852 | strbuf_addf(err, "verifying symref target: '%s': " | |
2853 | "is at %s but expected %s", | |
2854 | ref_update_original_update_refname(update), | |
2855 | referent, update->old_target); | |
2856 | return -1; | |
2857 | } |