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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, | |
38 | }; | |
3dce444f | 39 | |
0fcc285c | 40 | static const struct ref_storage_be *find_ref_storage_backend(unsigned int ref_storage_format) |
3dce444f | 41 | { |
0fcc285c PS |
42 | if (ref_storage_format < ARRAY_SIZE(refs_backends)) |
43 | return refs_backends[ref_storage_format]; | |
3dce444f RS |
44 | return NULL; |
45 | } | |
46 | ||
0fcc285c PS |
47 | unsigned int ref_storage_format_by_name(const char *name) |
48 | { | |
49 | for (unsigned int i = 0; i < ARRAY_SIZE(refs_backends); i++) | |
50 | if (refs_backends[i] && !strcmp(refs_backends[i]->name, name)) | |
51 | return i; | |
52 | return REF_STORAGE_FORMAT_UNKNOWN; | |
53 | } | |
54 | ||
55 | const char *ref_storage_format_to_name(unsigned int ref_storage_format) | |
56 | { | |
57 | const struct ref_storage_be *be = find_ref_storage_backend(ref_storage_format); | |
58 | if (!be) | |
59 | return "unknown"; | |
60 | return be->name; | |
61 | } | |
62 | ||
bc5fd6d3 | 63 | /* |
dde8a902 DT |
64 | * How to handle various characters in refnames: |
65 | * 0: An acceptable character for refs | |
5e650228 JH |
66 | * 1: End-of-component |
67 | * 2: ., look for a preceding . to reject .. in refs | |
68 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 69 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
70 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
71 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
72 | */ |
73 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
74 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
75 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 76 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 77 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 78 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
79 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
80 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
81 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
82 | }; |
83 | ||
b9342b3f DS |
84 | struct ref_namespace_info ref_namespace[] = { |
85 | [NAMESPACE_HEAD] = { | |
86 | .ref = "HEAD", | |
87 | .decoration = DECORATION_REF_HEAD, | |
88 | .exact = 1, | |
89 | }, | |
90 | [NAMESPACE_BRANCHES] = { | |
91 | .ref = "refs/heads/", | |
92 | .decoration = DECORATION_REF_LOCAL, | |
93 | }, | |
94 | [NAMESPACE_TAGS] = { | |
95 | .ref = "refs/tags/", | |
96 | .decoration = DECORATION_REF_TAG, | |
97 | }, | |
98 | [NAMESPACE_REMOTE_REFS] = { | |
99 | /* | |
100 | * The default refspec for new remotes copies refs from | |
101 | * refs/heads/ on the remote into refs/remotes/<remote>/. | |
102 | * As such, "refs/remotes/" has special handling. | |
103 | */ | |
104 | .ref = "refs/remotes/", | |
105 | .decoration = DECORATION_REF_REMOTE, | |
106 | }, | |
107 | [NAMESPACE_STASH] = { | |
108 | /* | |
109 | * The single ref "refs/stash" stores the latest stash. | |
110 | * Older stashes can be found in the reflog. | |
111 | */ | |
112 | .ref = "refs/stash", | |
113 | .exact = 1, | |
114 | .decoration = DECORATION_REF_STASH, | |
115 | }, | |
116 | [NAMESPACE_REPLACE] = { | |
117 | /* | |
118 | * This namespace allows Git to act as if one object ID | |
119 | * points to the content of another. Unlike the other | |
120 | * ref namespaces, this one can be changed by the | |
121 | * GIT_REPLACE_REF_BASE environment variable. This | |
122 | * .namespace value will be overwritten in setup_git_env(). | |
123 | */ | |
124 | .ref = "refs/replace/", | |
125 | .decoration = DECORATION_GRAFTED, | |
126 | }, | |
127 | [NAMESPACE_NOTES] = { | |
128 | /* | |
129 | * The refs/notes/commit ref points to the tip of a | |
130 | * parallel commit history that adds metadata to commits | |
131 | * in the normal history. This ref can be overwritten | |
132 | * by the core.notesRef config variable or the | |
133 | * GIT_NOTES_REFS environment variable. | |
134 | */ | |
135 | .ref = "refs/notes/commit", | |
136 | .exact = 1, | |
137 | }, | |
138 | [NAMESPACE_PREFETCH] = { | |
139 | /* | |
140 | * Prefetch refs are written by the background 'fetch' | |
141 | * maintenance task. It allows faster foreground fetches | |
142 | * by advertising these previously-downloaded tips without | |
143 | * updating refs/remotes/ without user intervention. | |
144 | */ | |
145 | .ref = "refs/prefetch/", | |
146 | }, | |
147 | [NAMESPACE_REWRITTEN] = { | |
148 | /* | |
149 | * Rewritten refs are used by the 'label' command in the | |
150 | * sequencer. These are particularly useful during an | |
151 | * interactive rebase that uses the 'merge' command. | |
152 | */ | |
153 | .ref = "refs/rewritten/", | |
154 | }, | |
155 | }; | |
156 | ||
157 | void update_ref_namespace(enum ref_namespace namespace, char *ref) | |
158 | { | |
159 | struct ref_namespace_info *info = &ref_namespace[namespace]; | |
160 | if (info->ref_updated) | |
161 | free(info->ref); | |
162 | info->ref = ref; | |
163 | info->ref_updated = 1; | |
164 | } | |
165 | ||
dde8a902 DT |
166 | /* |
167 | * Try to read one refname component from the front of refname. | |
168 | * Return the length of the component found, or -1 if the component is | |
169 | * not legal. It is legal if it is something reasonable to have under | |
170 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 | 171 | * |
1de16aec | 172 | * - it begins with ".", or |
bc5fd6d3 | 173 | * - it has double dots "..", or |
53a8555e | 174 | * - it has ASCII control characters, or |
cd377f45 JK |
175 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
176 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
177 | * - it ends with a "/", or |
178 | * - it ends with ".lock", or | |
179 | * - it contains a "@{" portion | |
1de16aec NTND |
180 | * |
181 | * When sanitized is not NULL, instead of rejecting the input refname | |
182 | * as an error, try to come up with a usable replacement for the input | |
183 | * refname in it. | |
bc5fd6d3 | 184 | */ |
1de16aec NTND |
185 | static int check_refname_component(const char *refname, int *flags, |
186 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
187 | { |
188 | const char *cp; | |
189 | char last = '\0'; | |
1de16aec NTND |
190 | size_t component_start = 0; /* garbage - not a reasonable initial value */ |
191 | ||
192 | if (sanitized) | |
193 | component_start = sanitized->len; | |
bc5fd6d3 MH |
194 | |
195 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
196 | int ch = *cp & 255; |
197 | unsigned char disp = refname_disposition[ch]; | |
1de16aec NTND |
198 | |
199 | if (sanitized && disp != 1) | |
200 | strbuf_addch(sanitized, ch); | |
201 | ||
dde8a902 | 202 | switch (disp) { |
5e650228 | 203 | case 1: |
dde8a902 | 204 | goto out; |
5e650228 | 205 | case 2: |
1de16aec NTND |
206 | if (last == '.') { /* Refname contains "..". */ |
207 | if (sanitized) | |
208 | /* collapse ".." to single "." */ | |
209 | strbuf_setlen(sanitized, sanitized->len - 1); | |
210 | else | |
211 | return -1; | |
212 | } | |
dde8a902 | 213 | break; |
5e650228 | 214 | case 3: |
1de16aec NTND |
215 | if (last == '@') { /* Refname contains "@{". */ |
216 | if (sanitized) | |
217 | sanitized->buf[sanitized->len-1] = '-'; | |
218 | else | |
219 | return -1; | |
220 | } | |
bc5fd6d3 | 221 | break; |
5e650228 | 222 | case 4: |
1de16aec NTND |
223 | /* forbidden char */ |
224 | if (sanitized) | |
225 | sanitized->buf[sanitized->len-1] = '-'; | |
226 | else | |
227 | return -1; | |
228 | break; | |
cd377f45 | 229 | case 5: |
1de16aec NTND |
230 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) { |
231 | /* refspec can't be a pattern */ | |
232 | if (sanitized) | |
233 | sanitized->buf[sanitized->len-1] = '-'; | |
234 | else | |
235 | return -1; | |
236 | } | |
cd377f45 JK |
237 | |
238 | /* | |
239 | * Unset the pattern flag so that we only accept | |
240 | * a single asterisk for one side of refspec. | |
241 | */ | |
242 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
243 | break; | |
dde8a902 | 244 | } |
bc5fd6d3 MH |
245 | last = ch; |
246 | } | |
dde8a902 | 247 | out: |
bc5fd6d3 | 248 | if (cp == refname) |
dac529e4 | 249 | return 0; /* Component has zero length. */ |
1de16aec NTND |
250 | |
251 | if (refname[0] == '.') { /* Component starts with '.'. */ | |
252 | if (sanitized) | |
253 | sanitized->buf[component_start] = '-'; | |
254 | else | |
255 | return -1; | |
256 | } | |
7108ad23 | 257 | if (cp - refname >= LOCK_SUFFIX_LEN && |
1de16aec NTND |
258 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) { |
259 | if (!sanitized) | |
260 | return -1; | |
261 | /* Refname ends with ".lock". */ | |
262 | while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) { | |
263 | /* try again in case we have .lock.lock */ | |
264 | } | |
265 | } | |
bc5fd6d3 MH |
266 | return cp - refname; |
267 | } | |
268 | ||
1de16aec NTND |
269 | static int check_or_sanitize_refname(const char *refname, int flags, |
270 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
271 | { |
272 | int component_len, component_count = 0; | |
273 | ||
1de16aec | 274 | if (!strcmp(refname, "@")) { |
9ba89f48 | 275 | /* Refname is a single character '@'. */ |
1de16aec NTND |
276 | if (sanitized) |
277 | strbuf_addch(sanitized, '-'); | |
278 | else | |
279 | return -1; | |
280 | } | |
9ba89f48 | 281 | |
bc5fd6d3 | 282 | while (1) { |
1de16aec NTND |
283 | if (sanitized && sanitized->len) |
284 | strbuf_complete(sanitized, '/'); | |
285 | ||
bc5fd6d3 | 286 | /* We are at the start of a path component. */ |
1de16aec NTND |
287 | component_len = check_refname_component(refname, &flags, |
288 | sanitized); | |
289 | if (sanitized && component_len == 0) | |
290 | ; /* OK, omit empty component */ | |
291 | else if (component_len <= 0) | |
cd377f45 JK |
292 | return -1; |
293 | ||
bc5fd6d3 MH |
294 | component_count++; |
295 | if (refname[component_len] == '\0') | |
296 | break; | |
297 | /* Skip to next component. */ | |
298 | refname += component_len + 1; | |
299 | } | |
300 | ||
1de16aec NTND |
301 | if (refname[component_len - 1] == '.') { |
302 | /* Refname ends with '.'. */ | |
303 | if (sanitized) | |
304 | ; /* omit ending dot */ | |
305 | else | |
306 | return -1; | |
307 | } | |
bc5fd6d3 MH |
308 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) |
309 | return -1; /* Refname has only one component. */ | |
310 | return 0; | |
311 | } | |
312 | ||
1de16aec NTND |
313 | int check_refname_format(const char *refname, int flags) |
314 | { | |
315 | return check_or_sanitize_refname(refname, flags, NULL); | |
316 | } | |
317 | ||
318 | void sanitize_refname_component(const char *refname, struct strbuf *out) | |
319 | { | |
320 | if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out)) | |
321 | BUG("sanitizing refname '%s' check returned error", refname); | |
322 | } | |
323 | ||
4cb77009 | 324 | int refname_is_safe(const char *refname) |
d0f810f0 | 325 | { |
39950fef MH |
326 | const char *rest; |
327 | ||
328 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
329 | char *buf; |
330 | int result; | |
e40f3557 MH |
331 | size_t restlen = strlen(rest); |
332 | ||
333 | /* rest must not be empty, or start or end with "/" */ | |
334 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
335 | return 0; | |
d0f810f0 | 336 | |
d0f810f0 RS |
337 | /* |
338 | * Does the refname try to escape refs/? | |
339 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
340 | * is not. | |
341 | */ | |
e40f3557 MH |
342 | buf = xmallocz(restlen); |
343 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
344 | free(buf); |
345 | return result; | |
346 | } | |
35db25c6 MH |
347 | |
348 | do { | |
d0f810f0 RS |
349 | if (!isupper(*refname) && *refname != '_') |
350 | return 0; | |
351 | refname++; | |
35db25c6 | 352 | } while (*refname); |
d0f810f0 RS |
353 | return 1; |
354 | } | |
355 | ||
67be7c5a MH |
356 | /* |
357 | * Return true if refname, which has the specified oid and flags, can | |
358 | * be resolved to an object in the database. If the referred-to object | |
359 | * does not exist, emit a warning and return false. | |
360 | */ | |
361 | int ref_resolves_to_object(const char *refname, | |
9bc45a28 | 362 | struct repository *repo, |
67be7c5a MH |
363 | const struct object_id *oid, |
364 | unsigned int flags) | |
365 | { | |
366 | if (flags & REF_ISBROKEN) | |
367 | return 0; | |
9bc45a28 | 368 | if (!repo_has_object_file(repo, oid)) { |
661558f0 | 369 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
370 | return 0; |
371 | } | |
372 | return 1; | |
373 | } | |
374 | ||
7d2df051 NTND |
375 | char *refs_resolve_refdup(struct ref_store *refs, |
376 | const char *refname, int resolve_flags, | |
0f2dc722 | 377 | struct object_id *oid, int *flags) |
7d2df051 NTND |
378 | { |
379 | const char *result; | |
380 | ||
381 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
ce14de03 | 382 | oid, flags); |
7d2df051 NTND |
383 | return xstrdup_or_null(result); |
384 | } | |
385 | ||
7bd9bcf3 | 386 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 387 | struct object_id *oid, int *flags) |
e1e22e37 | 388 | { |
23a3f0cb | 389 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 390 | refname, resolve_flags, |
0f2dc722 | 391 | oid, flags); |
cddc4258 MH |
392 | } |
393 | ||
bf1377a1 JK |
394 | /* The argument to for_each_filter_refs */ |
395 | struct for_each_ref_filter { | |
7bd9bcf3 | 396 | const char *pattern; |
9ab9b5df | 397 | const char *prefix; |
7bd9bcf3 MH |
398 | each_ref_fn *fn; |
399 | void *cb_data; | |
400 | }; | |
432ad41e | 401 | |
76887df0 | 402 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 403 | { |
76887df0 ÆAB |
404 | struct ref_store *refs = get_main_ref_store(the_repository); |
405 | ||
f1da24ca | 406 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, |
ce14de03 | 407 | oid, flags)) |
7bd9bcf3 MH |
408 | return 0; |
409 | return -1; | |
732134ed MH |
410 | } |
411 | ||
34c290a6 | 412 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 413 | { |
34c290a6 | 414 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
415 | } |
416 | ||
3f9f1acc | 417 | int refs_ref_exists(struct ref_store *refs, const char *refname) |
b3cd33d0 | 418 | { |
f1da24ca | 419 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, |
ce14de03 | 420 | NULL, NULL); |
b3cd33d0 NTND |
421 | } |
422 | ||
7bd9bcf3 | 423 | int ref_exists(const char *refname) |
bc5fd6d3 | 424 | { |
b3cd33d0 | 425 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
426 | } |
427 | ||
bf1377a1 JK |
428 | static int for_each_filter_refs(const char *refname, |
429 | const struct object_id *oid, | |
430 | int flags, void *data) | |
432ad41e | 431 | { |
bf1377a1 | 432 | struct for_each_ref_filter *filter = data; |
7bd9bcf3 | 433 | |
55d34269 | 434 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 435 | return 0; |
9ab9b5df RA |
436 | if (filter->prefix) |
437 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 438 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
439 | } |
440 | ||
ac2ed0d7 | 441 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 442 | { |
45a187cc | 443 | struct object *o = lookup_unknown_object(the_repository, name); |
c774aab9 | 444 | |
7bd9bcf3 | 445 | if (o->type == OBJ_NONE) { |
0df8e965 | 446 | int type = oid_object_info(the_repository, name, NULL); |
6da43d93 | 447 | if (type < 0 || !object_as_type(o, type, 0)) |
7bd9bcf3 MH |
448 | return PEEL_INVALID; |
449 | } | |
bc5fd6d3 | 450 | |
7bd9bcf3 MH |
451 | if (o->type != OBJ_TAG) |
452 | return PEEL_NON_TAG; | |
e1980c9d | 453 | |
7bd9bcf3 MH |
454 | o = deref_tag_noverify(o); |
455 | if (!o) | |
456 | return PEEL_INVALID; | |
457 | ||
ac2ed0d7 | 458 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 459 | return PEEL_PEELED; |
e1980c9d JH |
460 | } |
461 | ||
7bd9bcf3 MH |
462 | struct warn_if_dangling_data { |
463 | FILE *fp; | |
464 | const char *refname; | |
465 | const struct string_list *refnames; | |
466 | const char *msg_fmt; | |
467 | }; | |
bc5fd6d3 | 468 | |
63e14ee2 | 469 | static int warn_if_dangling_symref(const char *refname, |
5cf88fd8 | 470 | const struct object_id *oid UNUSED, |
7bd9bcf3 MH |
471 | int flags, void *cb_data) |
472 | { | |
473 | struct warn_if_dangling_data *d = cb_data; | |
474 | const char *resolves_to; | |
bc5fd6d3 | 475 | |
7bd9bcf3 MH |
476 | if (!(flags & REF_ISSYMREF)) |
477 | return 0; | |
bc5fd6d3 | 478 | |
744c040b | 479 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
480 | if (!resolves_to |
481 | || (d->refname | |
482 | ? strcmp(resolves_to, d->refname) | |
483 | : !string_list_has_string(d->refnames, resolves_to))) { | |
484 | return 0; | |
485 | } | |
bc5fd6d3 | 486 | |
7bd9bcf3 MH |
487 | fprintf(d->fp, d->msg_fmt, refname); |
488 | fputc('\n', d->fp); | |
489 | return 0; | |
bc5fd6d3 MH |
490 | } |
491 | ||
7bd9bcf3 | 492 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 493 | { |
7bd9bcf3 MH |
494 | struct warn_if_dangling_data data; |
495 | ||
496 | data.fp = fp; | |
497 | data.refname = refname; | |
498 | data.refnames = NULL; | |
499 | data.msg_fmt = msg_fmt; | |
500 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
501 | } |
502 | ||
7bd9bcf3 | 503 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 504 | { |
7bd9bcf3 | 505 | struct warn_if_dangling_data data; |
432ad41e | 506 | |
7bd9bcf3 MH |
507 | data.fp = fp; |
508 | data.refname = NULL; | |
509 | data.refnames = refnames; | |
510 | data.msg_fmt = msg_fmt; | |
511 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
512 | } |
513 | ||
7d2df051 NTND |
514 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
515 | { | |
516 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
517 | } | |
518 | ||
7bd9bcf3 | 519 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 520 | { |
23a3f0cb | 521 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
522 | } |
523 | ||
7d2df051 NTND |
524 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
525 | { | |
526 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
527 | } |
528 | ||
7bd9bcf3 | 529 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 530 | { |
23a3f0cb | 531 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
532 | } |
533 | ||
7d2df051 NTND |
534 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
535 | { | |
536 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 537 | } |
432ad41e | 538 | |
7bd9bcf3 | 539 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 540 | { |
23a3f0cb | 541 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
542 | } |
543 | ||
7bd9bcf3 MH |
544 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
545 | { | |
546 | struct strbuf buf = STRBUF_INIT; | |
547 | int ret = 0; | |
548 | struct object_id oid; | |
549 | int flag; | |
c774aab9 | 550 | |
7bd9bcf3 | 551 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 552 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
553 | ret = fn(buf.buf, &oid, flag, cb_data); |
554 | strbuf_release(&buf); | |
c774aab9 | 555 | |
7bd9bcf3 | 556 | return ret; |
e9c4c111 | 557 | } |
c774aab9 | 558 | |
65516f58 RA |
559 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
560 | const char *pattern) | |
561 | { | |
562 | struct strbuf normalized_pattern = STRBUF_INIT; | |
563 | ||
564 | if (*pattern == '/') | |
565 | BUG("pattern must not start with '/'"); | |
566 | ||
b877e617 | 567 | if (prefix) |
65516f58 | 568 | strbuf_addstr(&normalized_pattern, prefix); |
b877e617 DS |
569 | else if (!starts_with(pattern, "refs/") && |
570 | strcmp(pattern, "HEAD")) | |
65516f58 | 571 | strbuf_addstr(&normalized_pattern, "refs/"); |
b877e617 DS |
572 | /* |
573 | * NEEDSWORK: Special case other symrefs such as REBASE_HEAD, | |
574 | * MERGE_HEAD, etc. | |
575 | */ | |
576 | ||
65516f58 RA |
577 | strbuf_addstr(&normalized_pattern, pattern); |
578 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
579 | ||
580 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
581 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
582 | strbuf_release(&normalized_pattern); | |
583 | } | |
584 | ||
7bd9bcf3 MH |
585 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
586 | const char *prefix, void *cb_data) | |
662428f4 | 587 | { |
7bd9bcf3 | 588 | struct strbuf real_pattern = STRBUF_INIT; |
bf1377a1 | 589 | struct for_each_ref_filter filter; |
7bd9bcf3 | 590 | int ret; |
d08bae7e | 591 | |
59556548 | 592 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 593 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
594 | else if (prefix) |
595 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
596 | strbuf_addstr(&real_pattern, pattern); |
597 | ||
894a9d33 | 598 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 599 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 600 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
601 | /* No need to check for '*', there is none. */ |
602 | strbuf_addch(&real_pattern, '*'); | |
603 | } | |
604 | ||
605 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 606 | filter.prefix = prefix; |
d08bae7e IL |
607 | filter.fn = fn; |
608 | filter.cb_data = cb_data; | |
bf1377a1 | 609 | ret = for_each_ref(for_each_filter_refs, &filter); |
d08bae7e IL |
610 | |
611 | strbuf_release(&real_pattern); | |
612 | return ret; | |
613 | } | |
614 | ||
b09fe971 IL |
615 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
616 | { | |
617 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
618 | } | |
619 | ||
4577e483 | 620 | const char *prettify_refname(const char *name) |
a9c37a72 | 621 | { |
3e5b36c6 SG |
622 | if (skip_prefix(name, "refs/heads/", &name) || |
623 | skip_prefix(name, "refs/tags/", &name) || | |
624 | skip_prefix(name, "refs/remotes/", &name)) | |
625 | ; /* nothing */ | |
626 | return name; | |
a9c37a72 DB |
627 | } |
628 | ||
54457fe5 | 629 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
630 | "%.*s", |
631 | "refs/%.*s", | |
632 | "refs/tags/%.*s", | |
633 | "refs/heads/%.*s", | |
634 | "refs/remotes/%.*s", | |
635 | "refs/remotes/%.*s/HEAD", | |
636 | NULL | |
637 | }; | |
638 | ||
60650a48 JH |
639 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
640 | ||
641 | /* | |
642 | * Is it possible that the caller meant full_name with abbrev_name? | |
643 | * If so return a non-zero value to signal "yes"; the magnitude of | |
644 | * the returned value gives the precedence used for disambiguation. | |
645 | * | |
646 | * If abbrev_name cannot mean full_name, return 0. | |
647 | */ | |
54457fe5 | 648 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
649 | { |
650 | const char **p; | |
651 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 652 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 653 | |
60650a48 JH |
654 | for (p = ref_rev_parse_rules; *p; p++) |
655 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
656 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
657 | |
658 | return 0; | |
659 | } | |
660 | ||
b4be7410 BW |
661 | /* |
662 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
663 | * the results to 'prefixes' | |
664 | */ | |
c972bf4c | 665 | void expand_ref_prefix(struct strvec *prefixes, const char *prefix) |
b4be7410 BW |
666 | { |
667 | const char **p; | |
668 | int len = strlen(prefix); | |
669 | ||
670 | for (p = ref_rev_parse_rules; *p; p++) | |
c972bf4c | 671 | strvec_pushf(prefixes, *p, len, prefix); |
b4be7410 BW |
672 | } |
673 | ||
675704c7 JS |
674 | static const char default_branch_name_advice[] = N_( |
675 | "Using '%s' as the name for the initial branch. This default branch name\n" | |
676 | "is subject to change. To configure the initial branch name to use in all\n" | |
677 | "of your new repositories, which will suppress this warning, call:\n" | |
678 | "\n" | |
679 | "\tgit config --global init.defaultBranch <name>\n" | |
680 | "\n" | |
681 | "Names commonly chosen instead of 'master' are 'main', 'trunk' and\n" | |
682 | "'development'. The just-created branch can be renamed via this command:\n" | |
683 | "\n" | |
684 | "\tgit branch -m <name>\n" | |
685 | ); | |
686 | ||
cc0f13c5 | 687 | char *repo_default_branch_name(struct repository *r, int quiet) |
8747ebb7 DGW |
688 | { |
689 | const char *config_key = "init.defaultbranch"; | |
690 | const char *config_display_key = "init.defaultBranch"; | |
691 | char *ret = NULL, *full_ref; | |
704fed9e | 692 | const char *env = getenv("GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME"); |
8747ebb7 | 693 | |
704fed9e JS |
694 | if (env && *env) |
695 | ret = xstrdup(env); | |
696 | else if (repo_config_get_string(r, config_key, &ret) < 0) | |
8747ebb7 DGW |
697 | die(_("could not retrieve `%s`"), config_display_key); |
698 | ||
675704c7 | 699 | if (!ret) { |
8747ebb7 | 700 | ret = xstrdup("master"); |
675704c7 JS |
701 | if (!quiet) |
702 | advise(_(default_branch_name_advice), ret); | |
703 | } | |
8747ebb7 DGW |
704 | |
705 | full_ref = xstrfmt("refs/heads/%s", ret); | |
706 | if (check_refname_format(full_ref, 0)) | |
707 | die(_("invalid branch name: %s = %s"), config_display_key, ret); | |
708 | free(full_ref); | |
709 | ||
710 | return ret; | |
711 | } | |
712 | ||
cc0f13c5 | 713 | const char *git_default_branch_name(int quiet) |
8747ebb7 DGW |
714 | { |
715 | static char *ret; | |
716 | ||
717 | if (!ret) | |
cc0f13c5 | 718 | ret = repo_default_branch_name(the_repository, quiet); |
8747ebb7 DGW |
719 | |
720 | return ret; | |
721 | } | |
722 | ||
ff74f7f1 JH |
723 | /* |
724 | * *string and *len will only be substituted, and *string returned (for | |
725 | * later free()ing) if the string passed in is a magic short-hand form | |
726 | * to name a branch. | |
727 | */ | |
8f56e9d4 | 728 | static char *substitute_branch_name(struct repository *r, |
f24c30e0 JT |
729 | const char **string, int *len, |
730 | int nonfatal_dangling_mark) | |
ff74f7f1 JH |
731 | { |
732 | struct strbuf buf = STRBUF_INIT; | |
f24c30e0 JT |
733 | struct interpret_branch_name_options options = { |
734 | .nonfatal_dangling_mark = nonfatal_dangling_mark | |
735 | }; | |
a4f66a78 | 736 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, &options); |
ff74f7f1 JH |
737 | |
738 | if (ret == *len) { | |
739 | size_t size; | |
740 | *string = strbuf_detach(&buf, &size); | |
741 | *len = size; | |
742 | return (char *)*string; | |
743 | } | |
744 | ||
745 | return NULL; | |
746 | } | |
747 | ||
d8984c53 | 748 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
f24c30e0 | 749 | struct object_id *oid, char **ref, int nonfatal_dangling_mark) |
ff74f7f1 | 750 | { |
f24c30e0 JT |
751 | char *last_branch = substitute_branch_name(r, &str, &len, |
752 | nonfatal_dangling_mark); | |
d8984c53 | 753 | int refs_found = expand_ref(r, str, len, oid, ref); |
41da7111 NTND |
754 | free(last_branch); |
755 | return refs_found; | |
756 | } | |
757 | ||
0b1dbf53 NTND |
758 | int expand_ref(struct repository *repo, const char *str, int len, |
759 | struct object_id *oid, char **ref) | |
41da7111 | 760 | { |
ff74f7f1 JH |
761 | const char **p, *r; |
762 | int refs_found = 0; | |
6cd4a898 | 763 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
764 | |
765 | *ref = NULL; | |
766 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 767 | struct object_id oid_from_ref; |
768 | struct object_id *this_result; | |
ff74f7f1 | 769 | int flag; |
6582bd31 | 770 | struct ref_store *refs = get_main_ref_store(repo); |
ff74f7f1 | 771 | |
cca5fa64 | 772 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
773 | strbuf_reset(&fullref); |
774 | strbuf_addf(&fullref, *p, len, str); | |
f1da24ca | 775 | r = refs_resolve_ref_unsafe(refs, fullref.buf, |
6582bd31 | 776 | RESOLVE_REF_READING, |
ce14de03 | 777 | this_result, &flag); |
ff74f7f1 JH |
778 | if (r) { |
779 | if (!refs_found++) | |
780 | *ref = xstrdup(r); | |
781 | if (!warn_ambiguous_refs) | |
782 | break; | |
6cd4a898 | 783 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 784 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 785 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 786 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 787 | } |
ff74f7f1 | 788 | } |
6cd4a898 | 789 | strbuf_release(&fullref); |
ff74f7f1 JH |
790 | return refs_found; |
791 | } | |
792 | ||
56700903 NTND |
793 | int repo_dwim_log(struct repository *r, const char *str, int len, |
794 | struct object_id *oid, char **log) | |
ff74f7f1 | 795 | { |
56700903 | 796 | struct ref_store *refs = get_main_ref_store(r); |
f24c30e0 | 797 | char *last_branch = substitute_branch_name(r, &str, &len, 0); |
ff74f7f1 JH |
798 | const char **p; |
799 | int logs_found = 0; | |
6cd4a898 | 800 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
801 | |
802 | *log = NULL; | |
803 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 804 | struct object_id hash; |
ff74f7f1 JH |
805 | const char *ref, *it; |
806 | ||
6cd4a898 JK |
807 | strbuf_reset(&path); |
808 | strbuf_addf(&path, *p, len, str); | |
56700903 NTND |
809 | ref = refs_resolve_ref_unsafe(refs, path.buf, |
810 | RESOLVE_REF_READING, | |
ce14de03 | 811 | oid ? &hash : NULL, NULL); |
ff74f7f1 JH |
812 | if (!ref) |
813 | continue; | |
56700903 | 814 | if (refs_reflog_exists(refs, path.buf)) |
6cd4a898 | 815 | it = path.buf; |
56700903 NTND |
816 | else if (strcmp(ref, path.buf) && |
817 | refs_reflog_exists(refs, ref)) | |
ff74f7f1 JH |
818 | it = ref; |
819 | else | |
820 | continue; | |
821 | if (!logs_found++) { | |
822 | *log = xstrdup(it); | |
6f45ec88 ÆAB |
823 | if (oid) |
824 | oidcpy(oid, &hash); | |
ff74f7f1 | 825 | } |
7bd9bcf3 MH |
826 | if (!warn_ambiguous_refs) |
827 | break; | |
c0277d15 | 828 | } |
6cd4a898 | 829 | strbuf_release(&path); |
7bd9bcf3 MH |
830 | free(last_branch); |
831 | return logs_found; | |
2ddb5d17 BK |
832 | } |
833 | ||
56700903 NTND |
834 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
835 | { | |
836 | return repo_dwim_log(the_repository, str, len, oid, log); | |
837 | } | |
838 | ||
71e54734 | 839 | int is_per_worktree_ref(const char *refname) |
266b1827 | 840 | { |
55dd8b91 HWN |
841 | return starts_with(refname, "refs/worktree/") || |
842 | starts_with(refname, "refs/bisect/") || | |
843 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
844 | } |
845 | ||
846 | static int is_pseudoref_syntax(const char *refname) | |
847 | { | |
848 | const char *c; | |
849 | ||
850 | for (c = refname; *c; c++) { | |
851 | if (!isupper(*c) && *c != '-' && *c != '_') | |
852 | return 0; | |
853 | } | |
854 | ||
71e54734 HWN |
855 | /* |
856 | * HEAD is not a pseudoref, but it certainly uses the | |
857 | * pseudoref syntax. | |
858 | */ | |
266b1827 DT |
859 | return 1; |
860 | } | |
861 | ||
71e54734 HWN |
862 | static int is_current_worktree_ref(const char *ref) { |
863 | return is_pseudoref_syntax(ref) || is_per_worktree_ref(ref); | |
3a3b9d8c NTND |
864 | } |
865 | ||
71e54734 HWN |
866 | enum ref_worktree_type parse_worktree_ref(const char *maybe_worktree_ref, |
867 | const char **worktree_name, int *worktree_name_length, | |
868 | const char **bare_refname) | |
3a3b9d8c | 869 | { |
71e54734 HWN |
870 | const char *name_dummy; |
871 | int name_length_dummy; | |
872 | const char *ref_dummy; | |
3a3b9d8c | 873 | |
71e54734 HWN |
874 | if (!worktree_name) |
875 | worktree_name = &name_dummy; | |
876 | if (!worktree_name_length) | |
877 | worktree_name_length = &name_length_dummy; | |
878 | if (!bare_refname) | |
879 | bare_refname = &ref_dummy; | |
880 | ||
881 | if (skip_prefix(maybe_worktree_ref, "worktrees/", bare_refname)) { | |
882 | const char *slash = strchr(*bare_refname, '/'); | |
883 | ||
884 | *worktree_name = *bare_refname; | |
885 | if (!slash) { | |
886 | *worktree_name_length = strlen(*worktree_name); | |
887 | ||
888 | /* This is an error condition, and the caller tell because the bare_refname is "" */ | |
889 | *bare_refname = *worktree_name + *worktree_name_length; | |
890 | return REF_WORKTREE_OTHER; | |
891 | } | |
892 | ||
893 | *worktree_name_length = slash - *bare_refname; | |
894 | *bare_refname = slash + 1; | |
895 | ||
896 | if (is_current_worktree_ref(*bare_refname)) | |
897 | return REF_WORKTREE_OTHER; | |
898 | } | |
899 | ||
900 | *worktree_name = NULL; | |
901 | *worktree_name_length = 0; | |
902 | ||
903 | if (skip_prefix(maybe_worktree_ref, "main-worktree/", bare_refname) | |
904 | && is_current_worktree_ref(*bare_refname)) | |
905 | return REF_WORKTREE_MAIN; | |
906 | ||
907 | *bare_refname = maybe_worktree_ref; | |
908 | if (is_current_worktree_ref(maybe_worktree_ref)) | |
909 | return REF_WORKTREE_CURRENT; | |
910 | ||
911 | return REF_WORKTREE_SHARED; | |
266b1827 DT |
912 | } |
913 | ||
4ff0f01c MH |
914 | long get_files_ref_lock_timeout_ms(void) |
915 | { | |
916 | static int configured = 0; | |
917 | ||
918 | /* The default timeout is 100 ms: */ | |
919 | static int timeout_ms = 100; | |
920 | ||
921 | if (!configured) { | |
922 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
923 | configured = 1; | |
924 | } | |
925 | ||
926 | return timeout_ms; | |
927 | } | |
928 | ||
c0fe4e8b NTND |
929 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
930 | const char *refname, | |
2616a5e5 | 931 | const struct object_id *old_oid, |
c0fe4e8b | 932 | unsigned int flags) |
41b625b0 | 933 | { |
7521cc46 | 934 | struct ref_transaction *transaction; |
a4c653df | 935 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 936 | |
c6da34a6 | 937 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 938 | if (!transaction || |
89f3bbdd | 939 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 940 | flags, msg, &err) || |
db7516ab | 941 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
942 | error("%s", err.buf); |
943 | ref_transaction_free(transaction); | |
944 | strbuf_release(&err); | |
c0277d15 | 945 | return 1; |
41b625b0 | 946 | } |
7bd9bcf3 MH |
947 | ref_transaction_free(transaction); |
948 | strbuf_release(&err); | |
b531394d BC |
949 | return 0; |
950 | } | |
41b625b0 | 951 | |
c0fe4e8b | 952 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 953 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 954 | { |
23a3f0cb | 955 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 956 | old_oid, flags); |
c0fe4e8b NTND |
957 | } |
958 | ||
523fa69c | 959 | static void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 960 | { |
0ec29a47 JH |
961 | char c; |
962 | int wasspace = 1; | |
8b5157e4 | 963 | |
0ec29a47 JH |
964 | while ((c = *msg++)) { |
965 | if (wasspace && isspace(c)) | |
966 | continue; | |
967 | wasspace = isspace(c); | |
968 | if (wasspace) | |
969 | c = ' '; | |
80a6c207 | 970 | strbuf_addch(sb, c); |
a4c653df | 971 | } |
80a6c207 | 972 | strbuf_rtrim(sb); |
0ec29a47 | 973 | } |
8b5157e4 | 974 | |
523fa69c JH |
975 | static char *normalize_reflog_message(const char *msg) |
976 | { | |
977 | struct strbuf sb = STRBUF_INIT; | |
978 | ||
979 | if (msg && *msg) | |
980 | copy_reflog_msg(&sb, msg); | |
981 | return strbuf_detach(&sb, NULL); | |
982 | } | |
983 | ||
4cb77009 | 984 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 985 | { |
341fb286 CW |
986 | switch (log_all_ref_updates) { |
987 | case LOG_REFS_ALWAYS: | |
988 | return 1; | |
989 | case LOG_REFS_NORMAL: | |
990 | return starts_with(refname, "refs/heads/") || | |
991 | starts_with(refname, "refs/remotes/") || | |
992 | starts_with(refname, "refs/notes/") || | |
993 | !strcmp(refname, "HEAD"); | |
994 | default: | |
4e2bef57 | 995 | return 0; |
341fb286 | 996 | } |
4e2bef57 DT |
997 | } |
998 | ||
e7e0f26e | 999 | int is_branch(const char *refname) |
c3b0dec5 | 1000 | { |
59556548 | 1001 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
1002 | } |
1003 | ||
4207ed28 RS |
1004 | struct read_ref_at_cb { |
1005 | const char *refname; | |
dddbad72 | 1006 | timestamp_t at_time; |
4207ed28 RS |
1007 | int cnt; |
1008 | int reccnt; | |
8eb36d94 | 1009 | struct object_id *oid; |
4207ed28 RS |
1010 | int found_it; |
1011 | ||
8eb36d94 | 1012 | struct object_id ooid; |
1013 | struct object_id noid; | |
4207ed28 | 1014 | int tz; |
dddbad72 | 1015 | timestamp_t date; |
4207ed28 | 1016 | char **msg; |
dddbad72 | 1017 | timestamp_t *cutoff_time; |
4207ed28 RS |
1018 | int *cutoff_tz; |
1019 | int *cutoff_cnt; | |
1020 | }; | |
1021 | ||
95c2a718 DL |
1022 | static void set_read_ref_cutoffs(struct read_ref_at_cb *cb, |
1023 | timestamp_t timestamp, int tz, const char *message) | |
1024 | { | |
1025 | if (cb->msg) | |
1026 | *cb->msg = xstrdup(message); | |
1027 | if (cb->cutoff_time) | |
1028 | *cb->cutoff_time = timestamp; | |
1029 | if (cb->cutoff_tz) | |
1030 | *cb->cutoff_tz = tz; | |
1031 | if (cb->cutoff_cnt) | |
1032 | *cb->cutoff_cnt = cb->reccnt; | |
1033 | } | |
1034 | ||
9461d272 | 1035 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
5cf88fd8 | 1036 | const char *email UNUSED, |
c006e9fa JK |
1037 | timestamp_t timestamp, int tz, |
1038 | const char *message, void *cb_data) | |
4207ed28 RS |
1039 | { |
1040 | struct read_ref_at_cb *cb = cb_data; | |
6436a202 | 1041 | int reached_count; |
4207ed28 | 1042 | |
4207ed28 RS |
1043 | cb->tz = tz; |
1044 | cb->date = timestamp; | |
1045 | ||
6436a202 DL |
1046 | /* |
1047 | * It is not possible for cb->cnt == 0 on the first iteration because | |
1048 | * that special case is handled in read_ref_at(). | |
1049 | */ | |
1050 | if (cb->cnt > 0) | |
1051 | cb->cnt--; | |
1052 | reached_count = cb->cnt == 0 && !is_null_oid(ooid); | |
1053 | if (timestamp <= cb->at_time || reached_count) { | |
95c2a718 | 1054 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
4207ed28 | 1055 | /* |
78fb4579 | 1056 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
1057 | * hold the values for the previous record. |
1058 | */ | |
6436a202 DL |
1059 | if (!is_null_oid(&cb->ooid) && !oideq(&cb->ooid, noid)) |
1060 | warning(_("log for ref %s has gap after %s"), | |
a5481a6c | 1061 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
6436a202 DL |
1062 | if (reached_count) |
1063 | oidcpy(cb->oid, ooid); | |
1064 | else if (!is_null_oid(&cb->ooid) || cb->date == cb->at_time) | |
8eb36d94 | 1065 | oidcpy(cb->oid, noid); |
9001dc2a | 1066 | else if (!oideq(noid, cb->oid)) |
661558f0 | 1067 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 1068 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 1069 | DATE_MODE(RFC2822))); |
4207ed28 | 1070 | cb->found_it = 1; |
4207ed28 | 1071 | } |
95c2a718 | 1072 | cb->reccnt++; |
8eb36d94 | 1073 | oidcpy(&cb->ooid, ooid); |
1074 | oidcpy(&cb->noid, noid); | |
6436a202 DL |
1075 | return cb->found_it; |
1076 | } | |
1077 | ||
5cf88fd8 | 1078 | static int read_ref_at_ent_newest(struct object_id *ooid UNUSED, |
63e14ee2 | 1079 | struct object_id *noid, |
5cf88fd8 | 1080 | const char *email UNUSED, |
63e14ee2 JK |
1081 | timestamp_t timestamp, int tz, |
1082 | const char *message, void *cb_data) | |
6436a202 DL |
1083 | { |
1084 | struct read_ref_at_cb *cb = cb_data; | |
1085 | ||
1086 | set_read_ref_cutoffs(cb, timestamp, tz, message); | |
1087 | oidcpy(cb->oid, noid); | |
1088 | /* We just want the first entry */ | |
1089 | return 1; | |
4207ed28 RS |
1090 | } |
1091 | ||
9461d272 | 1092 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
5cf88fd8 | 1093 | const char *email UNUSED, |
c006e9fa JK |
1094 | timestamp_t timestamp, int tz, |
1095 | const char *message, void *cb_data) | |
4207ed28 RS |
1096 | { |
1097 | struct read_ref_at_cb *cb = cb_data; | |
1098 | ||
95c2a718 | 1099 | set_read_ref_cutoffs(cb, timestamp, tz, message); |
8eb36d94 | 1100 | oidcpy(cb->oid, ooid); |
1101 | if (is_null_oid(cb->oid)) | |
1102 | oidcpy(cb->oid, noid); | |
4207ed28 RS |
1103 | /* We just want the first entry */ |
1104 | return 1; | |
16d7cc90 JH |
1105 | } |
1106 | ||
7fdff474 NTND |
1107 | int read_ref_at(struct ref_store *refs, const char *refname, |
1108 | unsigned int flags, timestamp_t at_time, int cnt, | |
8eb36d94 | 1109 | struct object_id *oid, char **msg, |
dddbad72 | 1110 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 1111 | { |
4207ed28 | 1112 | struct read_ref_at_cb cb; |
d556fae2 | 1113 | |
4207ed28 RS |
1114 | memset(&cb, 0, sizeof(cb)); |
1115 | cb.refname = refname; | |
1116 | cb.at_time = at_time; | |
1117 | cb.cnt = cnt; | |
1118 | cb.msg = msg; | |
1119 | cb.cutoff_time = cutoff_time; | |
1120 | cb.cutoff_tz = cutoff_tz; | |
1121 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 1122 | cb.oid = oid; |
4207ed28 | 1123 | |
6436a202 DL |
1124 | if (cb.cnt == 0) { |
1125 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent_newest, &cb); | |
1126 | return 0; | |
1127 | } | |
1128 | ||
7fdff474 | 1129 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb); |
4207ed28 | 1130 | |
c41a87dd | 1131 | if (!cb.reccnt) { |
321c89bf | 1132 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
1133 | exit(128); |
1134 | else | |
661558f0 | 1135 | die(_("log for %s is empty"), refname); |
c41a87dd | 1136 | } |
4207ed28 RS |
1137 | if (cb.found_it) |
1138 | return 0; | |
1139 | ||
7fdff474 | 1140 | refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb); |
d556fae2 | 1141 | |
16d7cc90 | 1142 | return 1; |
d556fae2 | 1143 | } |
2ff81662 | 1144 | |
c0fe4e8b NTND |
1145 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
1146 | struct strbuf *err) | |
caa4046c | 1147 | { |
c0fe4e8b | 1148 | struct ref_transaction *tr; |
5a603b04 JN |
1149 | assert(err); |
1150 | ||
ca56dadb | 1151 | CALLOC_ARRAY(tr, 1); |
c0fe4e8b NTND |
1152 | tr->ref_store = refs; |
1153 | return tr; | |
1154 | } | |
1155 | ||
1156 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
1157 | { | |
c6da34a6 | 1158 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
1159 | } |
1160 | ||
026bd1d3 | 1161 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1162 | { |
43a2dfde | 1163 | size_t i; |
caa4046c | 1164 | |
1b07255c RS |
1165 | if (!transaction) |
1166 | return; | |
1167 | ||
30173b88 MH |
1168 | switch (transaction->state) { |
1169 | case REF_TRANSACTION_OPEN: | |
1170 | case REF_TRANSACTION_CLOSED: | |
1171 | /* OK */ | |
1172 | break; | |
1173 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1174 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1175 | break; |
1176 | default: | |
033abf97 | 1177 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1178 | break; |
1179 | } | |
1180 | ||
db7516ab RS |
1181 | for (i = 0; i < transaction->nr; i++) { |
1182 | free(transaction->updates[i]->msg); | |
88615910 | 1183 | free(transaction->updates[i]); |
db7516ab | 1184 | } |
caa4046c MH |
1185 | free(transaction->updates); |
1186 | free(transaction); | |
1187 | } | |
1188 | ||
71564516 MH |
1189 | struct ref_update *ref_transaction_add_update( |
1190 | struct ref_transaction *transaction, | |
1191 | const char *refname, unsigned int flags, | |
89f3bbdd | 1192 | const struct object_id *new_oid, |
1193 | const struct object_id *old_oid, | |
71564516 | 1194 | const char *msg) |
caa4046c | 1195 | { |
96ffc06f | 1196 | struct ref_update *update; |
71564516 MH |
1197 | |
1198 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1199 | BUG("update called for transaction that is not open"); |
71564516 | 1200 | |
96ffc06f | 1201 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1202 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1203 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1204 | |
1205 | update->flags = flags; | |
1206 | ||
1207 | if (flags & REF_HAVE_NEW) | |
89f3bbdd | 1208 | oidcpy(&update->new_oid, new_oid); |
71564516 | 1209 | if (flags & REF_HAVE_OLD) |
89f3bbdd | 1210 | oidcpy(&update->old_oid, old_oid); |
523fa69c | 1211 | update->msg = normalize_reflog_message(msg); |
caa4046c MH |
1212 | return update; |
1213 | } | |
1214 | ||
8e34800e RS |
1215 | int ref_transaction_update(struct ref_transaction *transaction, |
1216 | const char *refname, | |
89f3bbdd | 1217 | const struct object_id *new_oid, |
1218 | const struct object_id *old_oid, | |
1d147bdf | 1219 | unsigned int flags, const char *msg, |
8e34800e | 1220 | struct strbuf *err) |
caa4046c | 1221 | { |
5a603b04 JN |
1222 | assert(err); |
1223 | ||
3c966c7b HWN |
1224 | if (!(flags & REF_SKIP_REFNAME_VERIFICATION) && |
1225 | ((new_oid && !is_null_oid(new_oid)) ? | |
1226 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : | |
1227 | !refname_is_safe(refname))) { | |
661558f0 | 1228 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1229 | refname); |
1230 | return -1; | |
1231 | } | |
1232 | ||
a9bbbcec MH |
1233 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1234 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1235 | |
49f1eb3b JK |
1236 | /* |
1237 | * Clear flags outside the allowed set; this should be a noop because | |
1238 | * of the BUG() check above, but it works around a -Wnonnull warning | |
1239 | * with some versions of "gcc -O3". | |
1240 | */ | |
1241 | flags &= REF_TRANSACTION_UPDATE_ALLOWED_FLAGS; | |
1242 | ||
89f3bbdd | 1243 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
71564516 MH |
1244 | |
1245 | ref_transaction_add_update(transaction, refname, flags, | |
89f3bbdd | 1246 | new_oid, old_oid, msg); |
8e34800e | 1247 | return 0; |
caa4046c MH |
1248 | } |
1249 | ||
b416af5b RS |
1250 | int ref_transaction_create(struct ref_transaction *transaction, |
1251 | const char *refname, | |
89f3bbdd | 1252 | const struct object_id *new_oid, |
fec14ec3 | 1253 | unsigned int flags, const char *msg, |
b416af5b | 1254 | struct strbuf *err) |
caa4046c | 1255 | { |
d097a23b DS |
1256 | if (!new_oid || is_null_oid(new_oid)) { |
1257 | strbuf_addf(err, "'%s' has a null OID", refname); | |
1258 | return 1; | |
1259 | } | |
89f3bbdd | 1260 | return ref_transaction_update(transaction, refname, new_oid, |
14228447 | 1261 | null_oid(), flags, msg, err); |
caa4046c MH |
1262 | } |
1263 | ||
8c8bdc0d RS |
1264 | int ref_transaction_delete(struct ref_transaction *transaction, |
1265 | const char *refname, | |
89f3bbdd | 1266 | const struct object_id *old_oid, |
fb5a6bb6 | 1267 | unsigned int flags, const char *msg, |
8c8bdc0d | 1268 | struct strbuf *err) |
caa4046c | 1269 | { |
89f3bbdd | 1270 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1271 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1272 | return ref_transaction_update(transaction, refname, |
14228447 | 1273 | null_oid(), old_oid, |
1d147bdf | 1274 | flags, msg, err); |
caa4046c MH |
1275 | } |
1276 | ||
16180334 MH |
1277 | int ref_transaction_verify(struct ref_transaction *transaction, |
1278 | const char *refname, | |
89f3bbdd | 1279 | const struct object_id *old_oid, |
16180334 MH |
1280 | unsigned int flags, |
1281 | struct strbuf *err) | |
1282 | { | |
89f3bbdd | 1283 | if (!old_oid) |
033abf97 | 1284 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1285 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1286 | NULL, old_oid, |
16180334 MH |
1287 | flags, NULL, err); |
1288 | } | |
1289 | ||
c0fe4e8b | 1290 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1291 | const char *refname, const struct object_id *new_oid, |
1292 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1293 | enum action_on_err onerr) |
4738a333 | 1294 | { |
74ec19d4 | 1295 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1296 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1297 | int ret = 0; |
b4d75ac1 | 1298 | |
c6da34a6 | 1299 | t = ref_store_transaction_begin(refs, &err); |
09743417 HWN |
1300 | if (!t || |
1301 | ref_transaction_update(t, refname, new_oid, old_oid, flags, msg, | |
1302 | &err) || | |
1303 | ref_transaction_commit(t, &err)) { | |
1304 | ret = 1; | |
1305 | ref_transaction_free(t); | |
74ec19d4 DT |
1306 | } |
1307 | if (ret) { | |
661558f0 | 1308 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1309 | |
b4d75ac1 RS |
1310 | switch (onerr) { |
1311 | case UPDATE_REFS_MSG_ON_ERR: | |
1312 | error(str, refname, err.buf); | |
1313 | break; | |
1314 | case UPDATE_REFS_DIE_ON_ERR: | |
1315 | die(str, refname, err.buf); | |
1316 | break; | |
1317 | case UPDATE_REFS_QUIET_ON_ERR: | |
1318 | break; | |
1319 | } | |
1320 | strbuf_release(&err); | |
4738a333 | 1321 | return 1; |
b4d75ac1 RS |
1322 | } |
1323 | strbuf_release(&err); | |
74ec19d4 DT |
1324 | if (t) |
1325 | ref_transaction_free(t); | |
b4d75ac1 | 1326 | return 0; |
4738a333 BK |
1327 | } |
1328 | ||
c0fe4e8b | 1329 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1330 | const struct object_id *new_oid, |
1331 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1332 | unsigned int flags, enum action_on_err onerr) |
1333 | { | |
23a3f0cb | 1334 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1335 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1336 | } |
1337 | ||
613bef56 JK |
1338 | /* |
1339 | * Check that the string refname matches a rule of the form | |
1340 | * "{prefix}%.*s{suffix}". So "foo/bar/baz" would match the rule | |
1341 | * "foo/%.*s/baz", and return the string "bar". | |
1342 | */ | |
1343 | static const char *match_parse_rule(const char *refname, const char *rule, | |
1344 | size_t *len) | |
7c2b3029 | 1345 | { |
613bef56 JK |
1346 | /* |
1347 | * Check that rule matches refname up to the first percent in the rule. | |
1348 | * We can bail immediately if not, but otherwise we leave "rule" at the | |
1349 | * %-placeholder, and "refname" at the start of the potential matched | |
1350 | * name. | |
1351 | */ | |
1352 | while (*rule != '%') { | |
1353 | if (!*rule) | |
1354 | BUG("rev-parse rule did not have percent"); | |
1355 | if (*refname++ != *rule++) | |
1356 | return NULL; | |
1357 | } | |
7c2b3029 | 1358 | |
613bef56 JK |
1359 | /* |
1360 | * Check that our "%" is the expected placeholder. This assumes there | |
1361 | * are no other percents (placeholder or quoted) in the string, but | |
1362 | * that is sufficient for our rev-parse rules. | |
1363 | */ | |
1364 | if (!skip_prefix(rule, "%.*s", &rule)) | |
1365 | return NULL; | |
7c2b3029 | 1366 | |
613bef56 JK |
1367 | /* |
1368 | * And now check that our suffix (if any) matches. | |
1369 | */ | |
1370 | if (!strip_suffix(refname, rule, len)) | |
1371 | return NULL; | |
7c2b3029 | 1372 | |
613bef56 JK |
1373 | return refname; /* len set by strip_suffix() */ |
1374 | } | |
7c2b3029 | 1375 | |
546edf37 NTND |
1376 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1377 | const char *refname, int strict) | |
7c2b3029 JK |
1378 | { |
1379 | int i; | |
6cd4a898 | 1380 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1381 | |
7c2b3029 | 1382 | /* skip first rule, it will always match */ |
8f416f65 | 1383 | for (i = NUM_REV_PARSE_RULES - 1; i > 0 ; --i) { |
7c2b3029 | 1384 | int j; |
6e7b3309 | 1385 | int rules_to_fail = i; |
613bef56 | 1386 | const char *short_name; |
dd5e4d39 | 1387 | size_t short_name_len; |
7c2b3029 | 1388 | |
613bef56 JK |
1389 | short_name = match_parse_rule(refname, ref_rev_parse_rules[i], |
1390 | &short_name_len); | |
1391 | if (!short_name) | |
7c2b3029 JK |
1392 | continue; |
1393 | ||
6e7b3309 BW |
1394 | /* |
1395 | * in strict mode, all (except the matched one) rules | |
1396 | * must fail to resolve to a valid non-ambiguous ref | |
1397 | */ | |
1398 | if (strict) | |
8f416f65 | 1399 | rules_to_fail = NUM_REV_PARSE_RULES; |
6e7b3309 | 1400 | |
7c2b3029 JK |
1401 | /* |
1402 | * check if the short name resolves to a valid ref, | |
1403 | * but use only rules prior to the matched one | |
1404 | */ | |
6e7b3309 | 1405 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1406 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1407 | |
6e7b3309 BW |
1408 | /* skip matched rule */ |
1409 | if (i == j) | |
1410 | continue; | |
1411 | ||
7c2b3029 JK |
1412 | /* |
1413 | * the short name is ambiguous, if it resolves | |
1414 | * (with this previous rule) to a valid ref | |
1415 | * read_ref() returns 0 on success | |
1416 | */ | |
6cd4a898 JK |
1417 | strbuf_reset(&resolved_buf); |
1418 | strbuf_addf(&resolved_buf, rule, | |
dd5e4d39 JK |
1419 | cast_size_t_to_int(short_name_len), |
1420 | short_name); | |
546edf37 | 1421 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1422 | break; |
1423 | } | |
1424 | ||
1425 | /* | |
1426 | * short name is non-ambiguous if all previous rules | |
1427 | * haven't resolved to a valid ref | |
1428 | */ | |
6cd4a898 JK |
1429 | if (j == rules_to_fail) { |
1430 | strbuf_release(&resolved_buf); | |
613bef56 | 1431 | return xmemdupz(short_name, short_name_len); |
6cd4a898 | 1432 | } |
7c2b3029 JK |
1433 | } |
1434 | ||
6cd4a898 | 1435 | strbuf_release(&resolved_buf); |
dfefa935 | 1436 | return xstrdup(refname); |
7c2b3029 | 1437 | } |
daebaa78 | 1438 | |
546edf37 NTND |
1439 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1440 | { | |
1441 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1442 | refname, strict); | |
1443 | } | |
1444 | ||
9b67eb6f | 1445 | int parse_hide_refs_config(const char *var, const char *value, const char *section, |
c45841ff | 1446 | struct strvec *hide_refs) |
daebaa78 | 1447 | { |
ad8c7cda | 1448 | const char *key; |
daebaa78 | 1449 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1450 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1451 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1452 | char *ref; |
1453 | int len; | |
1454 | ||
1455 | if (!value) | |
1456 | return config_error_nonbool(var); | |
c45841ff TB |
1457 | |
1458 | /* drop const to remove trailing '/' characters */ | |
1459 | ref = (char *)strvec_push(hide_refs, value); | |
daebaa78 JH |
1460 | len = strlen(ref); |
1461 | while (len && ref[len - 1] == '/') | |
1462 | ref[--len] = '\0'; | |
daebaa78 JH |
1463 | } |
1464 | return 0; | |
1465 | } | |
1466 | ||
9b67eb6f | 1467 | int ref_is_hidden(const char *refname, const char *refname_full, |
c45841ff | 1468 | const struct strvec *hide_refs) |
daebaa78 | 1469 | { |
2bc31d16 | 1470 | int i; |
daebaa78 | 1471 | |
2bc31d16 | 1472 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
c45841ff | 1473 | const char *match = hide_refs->v[i]; |
78a766ab | 1474 | const char *subject; |
2bc31d16 | 1475 | int neg = 0; |
7a40a95e | 1476 | const char *p; |
2bc31d16 JK |
1477 | |
1478 | if (*match == '!') { | |
1479 | neg = 1; | |
1480 | match++; | |
1481 | } | |
1482 | ||
78a766ab LF |
1483 | if (*match == '^') { |
1484 | subject = refname_full; | |
1485 | match++; | |
1486 | } else { | |
1487 | subject = refname; | |
1488 | } | |
1489 | ||
1490 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1491 | if (subject && |
1492 | skip_prefix(subject, match, &p) && | |
1493 | (!*p || *p == '/')) | |
2bc31d16 | 1494 | return !neg; |
daebaa78 JH |
1495 | } |
1496 | return 0; | |
1497 | } | |
fa5b1830 | 1498 | |
15af64dc TB |
1499 | const char **hidden_refs_to_excludes(const struct strvec *hide_refs) |
1500 | { | |
1501 | const char **pattern; | |
1502 | for (pattern = hide_refs->v; *pattern; pattern++) { | |
1503 | /* | |
1504 | * We can't feed any excludes from hidden refs config | |
1505 | * sections, since later rules may override previous | |
1506 | * ones. For example, with rules "refs/foo" and | |
1507 | * "!refs/foo/bar", we should show "refs/foo/bar" (and | |
1508 | * everything underneath it), but the earlier exclusion | |
1509 | * would cause us to skip all of "refs/foo". We | |
1510 | * likewise don't implement the namespace stripping | |
1511 | * required for '^' rules. | |
1512 | * | |
1513 | * Both are possible to do, but complicated, so avoid | |
1514 | * populating the jump list at all if we see either of | |
1515 | * these patterns. | |
1516 | */ | |
1517 | if (**pattern == '!' || **pattern == '^') | |
1518 | return NULL; | |
1519 | } | |
1520 | return hide_refs->v; | |
1521 | } | |
1522 | ||
0845122c DT |
1523 | const char *find_descendant_ref(const char *dirname, |
1524 | const struct string_list *extras, | |
1525 | const struct string_list *skip) | |
fa5b1830 | 1526 | { |
0845122c | 1527 | int pos; |
fa5b1830 | 1528 | |
0845122c DT |
1529 | if (!extras) |
1530 | return NULL; | |
fa5b1830 MH |
1531 | |
1532 | /* | |
0845122c DT |
1533 | * Look at the place where dirname would be inserted into |
1534 | * extras. If there is an entry at that position that starts | |
1535 | * with dirname (remember, dirname includes the trailing | |
1536 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1537 | */ |
0845122c DT |
1538 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1539 | pos < extras->nr; pos++) { | |
1540 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1541 | |
0845122c DT |
1542 | if (!starts_with(extra_refname, dirname)) |
1543 | break; | |
1544 | ||
1545 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1546 | return extra_refname; | |
fa5b1830 | 1547 | } |
0845122c DT |
1548 | return NULL; |
1549 | } | |
fa5b1830 | 1550 | |
62f0b399 | 1551 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1552 | { |
1553 | struct object_id oid; | |
1554 | int flag; | |
1555 | ||
f1da24ca | 1556 | if (refs_resolve_ref_unsafe(refs, "HEAD", RESOLVE_REF_READING, |
ce14de03 | 1557 | &oid, &flag)) |
2bf68ed5 DT |
1558 | return fn("HEAD", &oid, flag, cb_data); |
1559 | ||
1560 | return 0; | |
1561 | } | |
1562 | ||
1563 | int head_ref(each_ref_fn fn, void *cb_data) | |
1564 | { | |
23a3f0cb | 1565 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1566 | } |
93770590 | 1567 | |
e121b9cb MH |
1568 | struct ref_iterator *refs_ref_iterator_begin( |
1569 | struct ref_store *refs, | |
b269ac53 TB |
1570 | const char *prefix, |
1571 | const char **exclude_patterns, | |
1572 | int trim, | |
9aab952e | 1573 | enum do_for_each_ref_flags flags) |
e121b9cb MH |
1574 | { |
1575 | struct ref_iterator *iter; | |
1576 | ||
6d751be4 | 1577 | if (!(flags & DO_FOR_EACH_INCLUDE_BROKEN)) { |
5d1f5b8c JK |
1578 | static int ref_paranoia = -1; |
1579 | ||
6d751be4 | 1580 | if (ref_paranoia < 0) |
968f12fd | 1581 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 1); |
6d751be4 JK |
1582 | if (ref_paranoia) { |
1583 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1584 | flags |= DO_FOR_EACH_OMIT_DANGLING_SYMREFS; | |
1585 | } | |
1586 | } | |
0a0865b8 | 1587 | |
b269ac53 | 1588 | iter = refs->be->iterator_begin(refs, prefix, exclude_patterns, flags); |
c7599718 MH |
1589 | /* |
1590 | * `iterator_begin()` already takes care of prefix, but we | |
1591 | * might need to do some trimming: | |
1592 | */ | |
1593 | if (trim) | |
1594 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb | 1595 | |
8738a8a4 MH |
1596 | /* Sanity check for subclasses: */ |
1597 | if (!iter->ordered) | |
1598 | BUG("reference iterator is not ordered"); | |
1599 | ||
e121b9cb MH |
1600 | return iter; |
1601 | } | |
1602 | ||
4c4de895 MH |
1603 | /* |
1604 | * Call fn for each reference in the specified submodule for which the | |
1605 | * refname begins with prefix. If trim is non-zero, then trim that | |
1606 | * many characters off the beginning of each refname before passing | |
1607 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1608 | * include broken references in the iteration. If fn ever returns a | |
1609 | * non-zero value, stop the iteration and return that value; | |
1610 | * otherwise, return 0. | |
1611 | */ | |
4a6067cd SB |
1612 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1613 | each_repo_ref_fn fn, int trim, int flags, | |
1614 | void *cb_data) | |
1615 | { | |
1616 | struct ref_iterator *iter; | |
1617 | struct ref_store *refs = get_main_ref_store(r); | |
1618 | ||
1619 | if (!refs) | |
1620 | return 0; | |
1621 | ||
b269ac53 | 1622 | iter = refs_ref_iterator_begin(refs, prefix, NULL, trim, flags); |
4a6067cd SB |
1623 | |
1624 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1625 | } | |
1626 | ||
1627 | struct do_for_each_ref_help { | |
1628 | each_ref_fn *fn; | |
1629 | void *cb_data; | |
1630 | }; | |
1631 | ||
1779deed | 1632 | static int do_for_each_ref_helper(struct repository *r UNUSED, |
4a6067cd SB |
1633 | const char *refname, |
1634 | const struct object_id *oid, | |
1635 | int flags, | |
1636 | void *cb_data) | |
1637 | { | |
1638 | struct do_for_each_ref_help *hp = cb_data; | |
1639 | ||
1640 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1641 | } | |
1642 | ||
7d2df051 | 1643 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
b269ac53 | 1644 | const char **exclude_patterns, |
9aab952e JK |
1645 | each_ref_fn fn, int trim, |
1646 | enum do_for_each_ref_flags flags, void *cb_data) | |
4c4de895 MH |
1647 | { |
1648 | struct ref_iterator *iter; | |
4a6067cd | 1649 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1650 | |
00eebe35 MH |
1651 | if (!refs) |
1652 | return 0; | |
1653 | ||
b269ac53 TB |
1654 | iter = refs_ref_iterator_begin(refs, prefix, exclude_patterns, trim, |
1655 | flags); | |
4c4de895 | 1656 | |
4a6067cd SB |
1657 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1658 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1659 | } |
1660 | ||
7d2df051 NTND |
1661 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1662 | { | |
b269ac53 | 1663 | return do_for_each_ref(refs, "", NULL, fn, 0, 0, cb_data); |
7d2df051 NTND |
1664 | } |
1665 | ||
93770590 DT |
1666 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1667 | { | |
23a3f0cb | 1668 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1669 | } |
1670 | ||
7d2df051 NTND |
1671 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1672 | each_ref_fn fn, void *cb_data) | |
1673 | { | |
b269ac53 | 1674 | return do_for_each_ref(refs, prefix, NULL, fn, strlen(prefix), 0, cb_data); |
93770590 DT |
1675 | } |
1676 | ||
1677 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1678 | { | |
23a3f0cb | 1679 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1680 | } |
1681 | ||
67985e4e | 1682 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data) |
93770590 | 1683 | { |
23a3f0cb | 1684 | return do_for_each_ref(get_main_ref_store(the_repository), |
b269ac53 | 1685 | prefix, NULL, fn, 0, 0, cb_data); |
93770590 DT |
1686 | } |
1687 | ||
073cf63c | 1688 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
b269ac53 | 1689 | const char **exclude_patterns, |
67985e4e | 1690 | each_ref_fn fn, void *cb_data) |
03df567f | 1691 | { |
b269ac53 | 1692 | return do_for_each_ref(refs, prefix, exclude_patterns, fn, 0, 0, cb_data); |
03df567f MH |
1693 | } |
1694 | ||
212e0f7e | 1695 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1696 | { |
97e61e0f | 1697 | const char *git_replace_ref_base = ref_namespace[NAMESPACE_REPLACE].ref; |
212e0f7e SB |
1698 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1699 | strlen(git_replace_ref_base), | |
1700 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1701 | } |
1702 | ||
e6bf24d3 TB |
1703 | int for_each_namespaced_ref(const char **exclude_patterns, |
1704 | each_ref_fn fn, void *cb_data) | |
93770590 DT |
1705 | { |
1706 | struct strbuf buf = STRBUF_INIT; | |
1707 | int ret; | |
1708 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1709 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
e6bf24d3 | 1710 | buf.buf, exclude_patterns, fn, 0, 0, cb_data); |
93770590 DT |
1711 | strbuf_release(&buf); |
1712 | return ret; | |
1713 | } | |
1714 | ||
7d2df051 | 1715 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1716 | { |
b269ac53 | 1717 | return do_for_each_ref(refs, "", NULL, fn, 0, |
93770590 DT |
1718 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1719 | } | |
2d0663b2 | 1720 | |
7d2df051 NTND |
1721 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1722 | { | |
23a3f0cb | 1723 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1724 | } |
1725 | ||
16b1985b TB |
1726 | static int qsort_strcmp(const void *va, const void *vb) |
1727 | { | |
1728 | const char *a = *(const char **)va; | |
1729 | const char *b = *(const char **)vb; | |
1730 | ||
1731 | return strcmp(a, b); | |
1732 | } | |
1733 | ||
1734 | static void find_longest_prefixes_1(struct string_list *out, | |
1735 | struct strbuf *prefix, | |
1736 | const char **patterns, size_t nr) | |
1737 | { | |
1738 | size_t i; | |
1739 | ||
1740 | for (i = 0; i < nr; i++) { | |
1741 | char c = patterns[i][prefix->len]; | |
1742 | if (!c || is_glob_special(c)) { | |
1743 | string_list_append(out, prefix->buf); | |
1744 | return; | |
1745 | } | |
1746 | } | |
1747 | ||
1748 | i = 0; | |
1749 | while (i < nr) { | |
1750 | size_t end; | |
1751 | ||
1752 | /* | |
1753 | * Set "end" to the index of the element _after_ the last one | |
1754 | * in our group. | |
1755 | */ | |
1756 | for (end = i + 1; end < nr; end++) { | |
1757 | if (patterns[i][prefix->len] != patterns[end][prefix->len]) | |
1758 | break; | |
1759 | } | |
1760 | ||
1761 | strbuf_addch(prefix, patterns[i][prefix->len]); | |
1762 | find_longest_prefixes_1(out, prefix, patterns + i, end - i); | |
1763 | strbuf_setlen(prefix, prefix->len - 1); | |
1764 | ||
1765 | i = end; | |
1766 | } | |
1767 | } | |
1768 | ||
1769 | static void find_longest_prefixes(struct string_list *out, | |
1770 | const char **patterns) | |
1771 | { | |
1772 | struct strvec sorted = STRVEC_INIT; | |
1773 | struct strbuf prefix = STRBUF_INIT; | |
1774 | ||
1775 | strvec_pushv(&sorted, patterns); | |
1776 | QSORT(sorted.v, sorted.nr, qsort_strcmp); | |
1777 | ||
1778 | find_longest_prefixes_1(out, &prefix, sorted.v, sorted.nr); | |
1779 | ||
1780 | strvec_clear(&sorted); | |
1781 | strbuf_release(&prefix); | |
1782 | } | |
1783 | ||
91e2ab15 JK |
1784 | int refs_for_each_fullref_in_prefixes(struct ref_store *ref_store, |
1785 | const char *namespace, | |
1786 | const char **patterns, | |
b269ac53 | 1787 | const char **exclude_patterns, |
91e2ab15 | 1788 | each_ref_fn fn, void *cb_data) |
16b1985b TB |
1789 | { |
1790 | struct string_list prefixes = STRING_LIST_INIT_DUP; | |
1791 | struct string_list_item *prefix; | |
1792 | struct strbuf buf = STRBUF_INIT; | |
1793 | int ret = 0, namespace_len; | |
1794 | ||
1795 | find_longest_prefixes(&prefixes, patterns); | |
1796 | ||
1797 | if (namespace) | |
1798 | strbuf_addstr(&buf, namespace); | |
1799 | namespace_len = buf.len; | |
1800 | ||
1801 | for_each_string_list_item(prefix, &prefixes) { | |
1802 | strbuf_addstr(&buf, prefix->string); | |
b269ac53 TB |
1803 | ret = refs_for_each_fullref_in(ref_store, buf.buf, |
1804 | exclude_patterns, fn, cb_data); | |
16b1985b TB |
1805 | if (ret) |
1806 | break; | |
1807 | strbuf_setlen(&buf, namespace_len); | |
1808 | } | |
1809 | ||
1810 | string_list_clear(&prefixes, 0); | |
1811 | strbuf_release(&buf); | |
1812 | return ret; | |
1813 | } | |
1814 | ||
e8115302 HWN |
1815 | static int refs_read_special_head(struct ref_store *ref_store, |
1816 | const char *refname, struct object_id *oid, | |
df3458e9 HWN |
1817 | struct strbuf *referent, unsigned int *type, |
1818 | int *failure_errno) | |
e8115302 HWN |
1819 | { |
1820 | struct strbuf full_path = STRBUF_INIT; | |
1821 | struct strbuf content = STRBUF_INIT; | |
1822 | int result = -1; | |
1823 | strbuf_addf(&full_path, "%s/%s", ref_store->gitdir, refname); | |
1824 | ||
668cdc04 PS |
1825 | if (strbuf_read_file(&content, full_path.buf, 0) < 0) { |
1826 | *failure_errno = errno; | |
e8115302 | 1827 | goto done; |
668cdc04 | 1828 | } |
e8115302 | 1829 | |
df3458e9 HWN |
1830 | result = parse_loose_ref_contents(content.buf, oid, referent, type, |
1831 | failure_errno); | |
e8115302 HWN |
1832 | |
1833 | done: | |
1834 | strbuf_release(&full_path); | |
1835 | strbuf_release(&content); | |
1836 | return result; | |
1837 | } | |
1838 | ||
70c70de6 PS |
1839 | static int is_special_ref(const char *refname) |
1840 | { | |
1841 | /* | |
1842 | * Special references get written and read directly via the filesystem | |
1843 | * by the subsystems that create them. Thus, they must not go through | |
1844 | * the reference backend but must instead be read directly. It is | |
1845 | * arguable whether this behaviour is sensible, or whether it's simply | |
1846 | * a leaky abstraction enabled by us only having a single reference | |
1847 | * backend implementation. But at least for a subset of references it | |
1848 | * indeed does make sense to treat them specially: | |
1849 | * | |
1850 | * - FETCH_HEAD may contain multiple object IDs, and each one of them | |
1851 | * carries additional metadata like where it came from. | |
1852 | * | |
1853 | * - MERGE_HEAD may contain multiple object IDs when merging multiple | |
1854 | * heads. | |
1855 | * | |
1856 | * There are some exceptions that you might expect to see on this list | |
1857 | * but which are handled exclusively via the reference backend: | |
1858 | * | |
0a06892d PS |
1859 | * - BISECT_EXPECTED_REV |
1860 | * | |
70c70de6 PS |
1861 | * - CHERRY_PICK_HEAD |
1862 | * | |
1863 | * - HEAD | |
1864 | * | |
1865 | * - ORIG_HEAD | |
1866 | * | |
1867 | * - "rebase-apply/" and "rebase-merge/" contain all of the state for | |
1868 | * rebases, including some reference-like files. These are | |
1869 | * exclusively read and written via the filesystem and never go | |
1870 | * through the refdb. | |
1871 | * | |
1872 | * Writing or deleting references must consistently go either through | |
1873 | * the filesystem (special refs) or through the reference backend | |
1874 | * (normal ones). | |
1875 | */ | |
1876 | static const char * const special_refs[] = { | |
1877 | "AUTO_MERGE", | |
70c70de6 PS |
1878 | "FETCH_HEAD", |
1879 | "MERGE_AUTOSTASH", | |
1880 | "MERGE_HEAD", | |
1881 | }; | |
1882 | size_t i; | |
1883 | ||
1884 | for (i = 0; i < ARRAY_SIZE(special_refs); i++) | |
1885 | if (!strcmp(refname, special_refs[i])) | |
1886 | return 1; | |
1887 | ||
1888 | return 0; | |
1889 | } | |
1890 | ||
8b72fea7 HWN |
1891 | int refs_read_raw_ref(struct ref_store *ref_store, const char *refname, |
1892 | struct object_id *oid, struct strbuf *referent, | |
1893 | unsigned int *type, int *failure_errno) | |
470be518 | 1894 | { |
8b72fea7 | 1895 | assert(failure_errno); |
70c70de6 | 1896 | if (is_special_ref(refname)) |
e8115302 | 1897 | return refs_read_special_head(ref_store, refname, oid, referent, |
df3458e9 | 1898 | type, failure_errno); |
e8115302 HWN |
1899 | |
1900 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, | |
8b72fea7 | 1901 | type, failure_errno); |
470be518 MH |
1902 | } |
1903 | ||
cd475b3b PS |
1904 | int refs_read_symbolic_ref(struct ref_store *ref_store, const char *refname, |
1905 | struct strbuf *referent) | |
1906 | { | |
5b875404 | 1907 | return ref_store->be->read_symbolic_ref(ref_store, refname, referent); |
cd475b3b PS |
1908 | } |
1909 | ||
7d2df051 | 1910 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1911 | const char *refname, |
1912 | int resolve_flags, | |
ef18119d | 1913 | struct object_id *oid, |
ce14de03 | 1914 | int *flags) |
2d0663b2 DT |
1915 | { |
1916 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1917 | struct object_id unused_oid; |
2d0663b2 DT |
1918 | int unused_flags; |
1919 | int symref_count; | |
1920 | ||
49e61479 | 1921 | if (!oid) |
1922 | oid = &unused_oid; | |
2d0663b2 DT |
1923 | if (!flags) |
1924 | flags = &unused_flags; | |
1925 | ||
1926 | *flags = 0; | |
1927 | ||
1928 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1929 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
ce14de03 | 1930 | !refname_is_safe(refname)) |
2d0663b2 | 1931 | return NULL; |
2d0663b2 DT |
1932 | |
1933 | /* | |
c7c33f50 | 1934 | * repo_dwim_ref() uses REF_ISBROKEN to distinguish between |
2d0663b2 DT |
1935 | * missing refs and refs that were present but invalid, |
1936 | * to complain about the latter to stderr. | |
1937 | * | |
1938 | * We don't know whether the ref exists, so don't set | |
1939 | * REF_ISBROKEN yet. | |
1940 | */ | |
1941 | *flags |= REF_BAD_NAME; | |
1942 | } | |
1943 | ||
1944 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1945 | unsigned int read_flags = 0; | |
ce14de03 | 1946 | int failure_errno; |
2d0663b2 | 1947 | |
8b72fea7 | 1948 | if (refs_read_raw_ref(refs, refname, oid, &sb_refname, |
ce14de03 | 1949 | &read_flags, &failure_errno)) { |
2d0663b2 | 1950 | *flags |= read_flags; |
a1c1d817 JK |
1951 | |
1952 | /* In reading mode, refs must eventually resolve */ | |
1953 | if (resolve_flags & RESOLVE_REF_READING) | |
1954 | return NULL; | |
1955 | ||
1956 | /* | |
1957 | * Otherwise a missing ref is OK. But the files backend | |
1958 | * may show errors besides ENOENT if there are | |
1959 | * similarly-named refs. | |
1960 | */ | |
ce14de03 ÆAB |
1961 | if (failure_errno != ENOENT && |
1962 | failure_errno != EISDIR && | |
1963 | failure_errno != ENOTDIR) | |
2d0663b2 | 1964 | return NULL; |
a1c1d817 | 1965 | |
49e61479 | 1966 | oidclr(oid); |
2d0663b2 DT |
1967 | if (*flags & REF_BAD_NAME) |
1968 | *flags |= REF_ISBROKEN; | |
1969 | return refname; | |
1970 | } | |
1971 | ||
1972 | *flags |= read_flags; | |
1973 | ||
1974 | if (!(read_flags & REF_ISSYMREF)) { | |
1975 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 1976 | oidclr(oid); |
2d0663b2 DT |
1977 | *flags |= REF_ISBROKEN; |
1978 | } | |
1979 | return refname; | |
1980 | } | |
1981 | ||
1982 | refname = sb_refname.buf; | |
1983 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 1984 | oidclr(oid); |
2d0663b2 DT |
1985 | return refname; |
1986 | } | |
1987 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1988 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
ce14de03 | 1989 | !refname_is_safe(refname)) |
2d0663b2 | 1990 | return NULL; |
2d0663b2 DT |
1991 | |
1992 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
1993 | } | |
1994 | } | |
1995 | ||
2d0663b2 DT |
1996 | return NULL; |
1997 | } | |
00eebe35 | 1998 | |
6fb5acfd DT |
1999 | /* backend functions */ |
2000 | int refs_init_db(struct strbuf *err) | |
2001 | { | |
23a3f0cb | 2002 | struct ref_store *refs = get_main_ref_store(the_repository); |
6fb5acfd DT |
2003 | |
2004 | return refs->be->init_db(refs, err); | |
2005 | } | |
2006 | ||
bd40dcda | 2007 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 2008 | struct object_id *oid, int *flags) |
bd40dcda | 2009 | { |
23a3f0cb | 2010 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
ce14de03 | 2011 | resolve_flags, oid, flags); |
bd40dcda MH |
2012 | } |
2013 | ||
a8355bb7 | 2014 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 2015 | struct object_id *oid) |
424dcc76 | 2016 | { |
424dcc76 MH |
2017 | struct ref_store *refs; |
2018 | int flags; | |
2019 | ||
29babbee | 2020 | refs = get_submodule_ref_store(submodule); |
48a8475f | 2021 | |
424dcc76 MH |
2022 | if (!refs) |
2023 | return -1; | |
2024 | ||
ce14de03 ÆAB |
2025 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
2026 | is_null_oid(oid)) | |
424dcc76 MH |
2027 | return -1; |
2028 | return 0; | |
2029 | } | |
2030 | ||
0c064d90 | 2031 | struct ref_store_hash_entry |
7d4558c4 | 2032 | { |
e2b5038d | 2033 | struct hashmap_entry ent; |
7d4558c4 MH |
2034 | |
2035 | struct ref_store *refs; | |
2036 | ||
0c064d90 NTND |
2037 | /* NUL-terminated identifier of the ref store: */ |
2038 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
2039 | }; |
2040 | ||
5cf88fd8 | 2041 | static int ref_store_hash_cmp(const void *cmp_data UNUSED, |
939af16e EW |
2042 | const struct hashmap_entry *eptr, |
2043 | const struct hashmap_entry *entry_or_key, | |
7d4558c4 MH |
2044 | const void *keydata) |
2045 | { | |
939af16e EW |
2046 | const struct ref_store_hash_entry *e1, *e2; |
2047 | const char *name; | |
2048 | ||
2049 | e1 = container_of(eptr, const struct ref_store_hash_entry, ent); | |
2050 | e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent); | |
2051 | name = keydata ? keydata : e2->name; | |
7d4558c4 | 2052 | |
0c064d90 | 2053 | return strcmp(e1->name, name); |
7d4558c4 MH |
2054 | } |
2055 | ||
0c064d90 NTND |
2056 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
2057 | const char *name, struct ref_store *refs) | |
7d4558c4 | 2058 | { |
0c064d90 | 2059 | struct ref_store_hash_entry *entry; |
7d4558c4 | 2060 | |
0c064d90 | 2061 | FLEX_ALLOC_STR(entry, name, name); |
d22245a2 | 2062 | hashmap_entry_init(&entry->ent, strhash(name)); |
7d4558c4 MH |
2063 | entry->refs = refs; |
2064 | return entry; | |
2065 | } | |
2066 | ||
7d4558c4 MH |
2067 | /* A hashmap of ref_stores, stored by submodule name: */ |
2068 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 2069 | |
17eff96b NTND |
2070 | /* A hashmap of ref_stores, stored by worktree id: */ |
2071 | static struct hashmap worktree_ref_stores; | |
2072 | ||
c468da4e | 2073 | /* |
0c064d90 NTND |
2074 | * Look up a ref store by name. If that ref_store hasn't been |
2075 | * registered yet, return NULL. | |
c468da4e | 2076 | */ |
0c064d90 NTND |
2077 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
2078 | const char *name) | |
00eebe35 | 2079 | { |
0c064d90 | 2080 | struct ref_store_hash_entry *entry; |
f23a4651 | 2081 | unsigned int hash; |
00eebe35 | 2082 | |
0c064d90 | 2083 | if (!map->tablesize) |
7d4558c4 MH |
2084 | /* It's initialized on demand in register_ref_store(). */ |
2085 | return NULL; | |
620a66b9 | 2086 | |
f23a4651 EW |
2087 | hash = strhash(name); |
2088 | entry = hashmap_get_entry_from_hash(map, hash, name, | |
2089 | struct ref_store_hash_entry, ent); | |
7d4558c4 | 2090 | return entry ? entry->refs : NULL; |
00eebe35 MH |
2091 | } |
2092 | ||
c468da4e MH |
2093 | /* |
2094 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 2095 | * gitdir. |
c468da4e | 2096 | */ |
34224e14 JT |
2097 | static struct ref_store *ref_store_init(struct repository *repo, |
2098 | const char *gitdir, | |
9e7ec634 | 2099 | unsigned int flags) |
00eebe35 | 2100 | { |
173761e2 | 2101 | const struct ref_storage_be *be; |
ba88add5 | 2102 | struct ref_store *refs; |
00eebe35 | 2103 | |
173761e2 | 2104 | be = find_ref_storage_backend(repo->ref_storage_format); |
00eebe35 | 2105 | if (!be) |
0fcc285c | 2106 | BUG("reference backend is unknown"); |
00eebe35 | 2107 | |
34224e14 | 2108 | refs = be->init(repo, gitdir, flags); |
ba88add5 | 2109 | return refs; |
00eebe35 MH |
2110 | } |
2111 | ||
64a74161 | 2112 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 2113 | { |
02204610 JK |
2114 | if (r->refs_private) |
2115 | return r->refs_private; | |
24c8407e | 2116 | |
2dc417ab JK |
2117 | if (!r->gitdir) |
2118 | BUG("attempting to get main_ref_store outside of repository"); | |
2119 | ||
34224e14 | 2120 | r->refs_private = ref_store_init(r, r->gitdir, REF_STORE_ALL_CAPS); |
4441f427 | 2121 | r->refs_private = maybe_debug_wrap_ref_store(r->gitdir, r->refs_private); |
02204610 | 2122 | return r->refs_private; |
378dc910 NTND |
2123 | } |
2124 | ||
2125 | /* | |
0c064d90 NTND |
2126 | * Associate a ref store with a name. It is a fatal error to call this |
2127 | * function twice for the same name. | |
378dc910 | 2128 | */ |
0c064d90 NTND |
2129 | static void register_ref_store_map(struct hashmap *map, |
2130 | const char *type, | |
2131 | struct ref_store *refs, | |
2132 | const char *name) | |
378dc910 | 2133 | { |
26b455f2 EW |
2134 | struct ref_store_hash_entry *entry; |
2135 | ||
0c064d90 | 2136 | if (!map->tablesize) |
7663cdc8 | 2137 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 2138 | |
26b455f2 EW |
2139 | entry = alloc_ref_store_hash_entry(name, refs); |
2140 | if (hashmap_put(map, &entry->ent)) | |
033abf97 | 2141 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
2142 | } |
2143 | ||
18d0002d | 2144 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 2145 | { |
126c9e05 | 2146 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 2147 | struct ref_store *refs; |
29babbee NTND |
2148 | char *to_free = NULL; |
2149 | size_t len; | |
34224e14 | 2150 | struct repository *subrepo; |
00eebe35 | 2151 | |
82a150f2 NTND |
2152 | if (!submodule) |
2153 | return NULL; | |
2154 | ||
873ea90d NTND |
2155 | len = strlen(submodule); |
2156 | while (len && is_dir_sep(submodule[len - 1])) | |
2157 | len--; | |
2158 | if (!len) | |
2159 | return NULL; | |
00eebe35 | 2160 | |
29babbee NTND |
2161 | if (submodule[len]) |
2162 | /* We need to strip off one or more trailing slashes */ | |
2163 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 2164 | |
0c064d90 | 2165 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 2166 | if (refs) |
2c616c17 | 2167 | goto done; |
00eebe35 | 2168 | |
126c9e05 | 2169 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
2170 | if (!is_nonbare_repository_dir(&submodule_sb)) |
2171 | goto done; | |
00eebe35 | 2172 | |
2c616c17 NTND |
2173 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
2174 | goto done; | |
00eebe35 | 2175 | |
34224e14 JT |
2176 | subrepo = xmalloc(sizeof(*subrepo)); |
2177 | /* | |
2178 | * NEEDSWORK: Make get_submodule_ref_store() work with arbitrary | |
2179 | * superprojects other than the_repository. This probably should be | |
2180 | * done by making it take a struct repository * parameter instead of a | |
2181 | * submodule path. | |
2182 | */ | |
2183 | if (repo_submodule_init(subrepo, the_repository, submodule, | |
2184 | null_oid())) { | |
2185 | free(subrepo); | |
2186 | goto done; | |
2187 | } | |
2188 | refs = ref_store_init(subrepo, submodule_sb.buf, | |
9e7ec634 | 2189 | REF_STORE_READ | REF_STORE_ODB); |
0c064d90 NTND |
2190 | register_ref_store_map(&submodule_ref_stores, "submodule", |
2191 | refs, submodule); | |
5d0bc90e | 2192 | |
2c616c17 | 2193 | done: |
5d0bc90e | 2194 | strbuf_release(&submodule_sb); |
29babbee NTND |
2195 | free(to_free); |
2196 | ||
00eebe35 MH |
2197 | return refs; |
2198 | } | |
2199 | ||
17eff96b NTND |
2200 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
2201 | { | |
2202 | struct ref_store *refs; | |
2203 | const char *id; | |
2204 | ||
2205 | if (wt->is_current) | |
23a3f0cb | 2206 | return get_main_ref_store(the_repository); |
17eff96b NTND |
2207 | |
2208 | id = wt->id ? wt->id : "/"; | |
2209 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
2210 | if (refs) | |
2211 | return refs; | |
2212 | ||
2213 | if (wt->id) | |
34224e14 JT |
2214 | refs = ref_store_init(the_repository, |
2215 | git_common_path("worktrees/%s", wt->id), | |
17eff96b NTND |
2216 | REF_STORE_ALL_CAPS); |
2217 | else | |
34224e14 JT |
2218 | refs = ref_store_init(the_repository, |
2219 | get_git_common_dir(), | |
17eff96b NTND |
2220 | REF_STORE_ALL_CAPS); |
2221 | ||
2222 | if (refs) | |
2223 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
2224 | refs, id); | |
2225 | return refs; | |
2226 | } | |
2227 | ||
f9f7fd3b HWN |
2228 | void base_ref_store_init(struct ref_store *refs, struct repository *repo, |
2229 | const char *path, const struct ref_storage_be *be) | |
00eebe35 | 2230 | { |
620a66b9 | 2231 | refs->be = be; |
f9f7fd3b HWN |
2232 | refs->repo = repo; |
2233 | refs->gitdir = xstrdup(path); | |
00eebe35 | 2234 | } |
127b42a1 RS |
2235 | |
2236 | /* backend functions */ | |
826ae79f | 2237 | int refs_pack_refs(struct ref_store *refs, struct pack_refs_opts *opts) |
8231527e | 2238 | { |
826ae79f | 2239 | return refs->be->pack_refs(refs, opts); |
8231527e MH |
2240 | } |
2241 | ||
36a31792 | 2242 | int peel_iterated_oid(const struct object_id *base, struct object_id *peeled) |
7d2df051 | 2243 | { |
36a31792 JK |
2244 | if (current_ref_iter && |
2245 | (current_ref_iter->oid == base || | |
2246 | oideq(current_ref_iter->oid, base))) | |
2247 | return ref_iterator_peel(current_ref_iter, peeled); | |
ba1c052f | 2248 | |
617480d7 | 2249 | return peel_object(base, peeled) ? -1 : 0; |
7d2df051 | 2250 | } |
bd427cf2 | 2251 | |
7d2df051 NTND |
2252 | int refs_create_symref(struct ref_store *refs, |
2253 | const char *ref_target, | |
2254 | const char *refs_heads_master, | |
2255 | const char *logmsg) | |
2256 | { | |
523fa69c JH |
2257 | char *msg; |
2258 | int retval; | |
2259 | ||
2260 | msg = normalize_reflog_message(logmsg); | |
2261 | retval = refs->be->create_symref(refs, ref_target, refs_heads_master, | |
2262 | msg); | |
2263 | free(msg); | |
2264 | return retval; | |
bd427cf2 MH |
2265 | } |
2266 | ||
284689ba MH |
2267 | int create_symref(const char *ref_target, const char *refs_heads_master, |
2268 | const char *logmsg) | |
2269 | { | |
23a3f0cb | 2270 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 2271 | refs_heads_master, logmsg); |
284689ba MH |
2272 | } |
2273 | ||
2ced105c MH |
2274 | int ref_update_reject_duplicates(struct string_list *refnames, |
2275 | struct strbuf *err) | |
2276 | { | |
a552e50e | 2277 | size_t i, n = refnames->nr; |
2ced105c MH |
2278 | |
2279 | assert(err); | |
2280 | ||
8556f8d6 MH |
2281 | for (i = 1; i < n; i++) { |
2282 | int cmp = strcmp(refnames->items[i - 1].string, | |
2283 | refnames->items[i].string); | |
2284 | ||
2285 | if (!cmp) { | |
2ced105c | 2286 | strbuf_addf(err, |
661558f0 | 2287 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
2288 | refnames->items[i].string); |
2289 | return 1; | |
8556f8d6 | 2290 | } else if (cmp > 0) { |
033abf97 | 2291 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 2292 | } |
8556f8d6 | 2293 | } |
2ced105c MH |
2294 | return 0; |
2295 | } | |
2296 | ||
67541597 PS |
2297 | static int run_transaction_hook(struct ref_transaction *transaction, |
2298 | const char *state) | |
2299 | { | |
2300 | struct child_process proc = CHILD_PROCESS_INIT; | |
2301 | struct strbuf buf = STRBUF_INIT; | |
0a0fbbe3 | 2302 | const char *hook; |
67541597 PS |
2303 | int ret = 0, i; |
2304 | ||
0a0fbbe3 | 2305 | hook = find_hook("reference-transaction"); |
67541597 | 2306 | if (!hook) |
67541597 | 2307 | return ret; |
67541597 | 2308 | |
c972bf4c | 2309 | strvec_pushl(&proc.args, hook, state, NULL); |
67541597 PS |
2310 | proc.in = -1; |
2311 | proc.stdout_to_stderr = 1; | |
2312 | proc.trace2_hook_name = "reference-transaction"; | |
2313 | ||
2314 | ret = start_command(&proc); | |
2315 | if (ret) | |
2316 | return ret; | |
2317 | ||
2318 | sigchain_push(SIGPIPE, SIG_IGN); | |
2319 | ||
2320 | for (i = 0; i < transaction->nr; i++) { | |
2321 | struct ref_update *update = transaction->updates[i]; | |
2322 | ||
2323 | strbuf_reset(&buf); | |
2324 | strbuf_addf(&buf, "%s %s %s\n", | |
2325 | oid_to_hex(&update->old_oid), | |
2326 | oid_to_hex(&update->new_oid), | |
2327 | update->refname); | |
2328 | ||
2329 | if (write_in_full(proc.in, buf.buf, buf.len) < 0) { | |
4755d7df ÆAB |
2330 | if (errno != EPIPE) { |
2331 | /* Don't leak errno outside this API */ | |
2332 | errno = 0; | |
67541597 | 2333 | ret = -1; |
4755d7df | 2334 | } |
67541597 PS |
2335 | break; |
2336 | } | |
2337 | } | |
2338 | ||
2339 | close(proc.in); | |
2340 | sigchain_pop(SIGPIPE); | |
2341 | strbuf_release(&buf); | |
2342 | ||
2343 | ret |= finish_command(&proc); | |
2344 | return ret; | |
2345 | } | |
2346 | ||
30173b88 MH |
2347 | int ref_transaction_prepare(struct ref_transaction *transaction, |
2348 | struct strbuf *err) | |
127b42a1 | 2349 | { |
c0fe4e8b | 2350 | struct ref_store *refs = transaction->ref_store; |
67541597 | 2351 | int ret; |
127b42a1 | 2352 | |
8d4240d3 MH |
2353 | switch (transaction->state) { |
2354 | case REF_TRANSACTION_OPEN: | |
2355 | /* Good. */ | |
2356 | break; | |
30173b88 | 2357 | case REF_TRANSACTION_PREPARED: |
033abf97 | 2358 | BUG("prepare called twice on reference transaction"); |
30173b88 | 2359 | break; |
8d4240d3 | 2360 | case REF_TRANSACTION_CLOSED: |
033abf97 | 2361 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
2362 | break; |
2363 | default: | |
033abf97 | 2364 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
2365 | break; |
2366 | } | |
2367 | ||
ecd81dfc | 2368 | if (refs->repo->objects->odb->disable_ref_updates) { |
d8f4481c JK |
2369 | strbuf_addstr(err, |
2370 | _("ref updates forbidden inside quarantine environment")); | |
2371 | return -1; | |
2372 | } | |
2373 | ||
67541597 PS |
2374 | ret = refs->be->transaction_prepare(refs, transaction, err); |
2375 | if (ret) | |
2376 | return ret; | |
2377 | ||
2378 | ret = run_transaction_hook(transaction, "prepared"); | |
2379 | if (ret) { | |
2380 | ref_transaction_abort(transaction, err); | |
2381 | die(_("ref updates aborted by hook")); | |
2382 | } | |
2383 | ||
2384 | return 0; | |
30173b88 MH |
2385 | } |
2386 | ||
2387 | int ref_transaction_abort(struct ref_transaction *transaction, | |
2388 | struct strbuf *err) | |
2389 | { | |
2390 | struct ref_store *refs = transaction->ref_store; | |
2391 | int ret = 0; | |
2392 | ||
2393 | switch (transaction->state) { | |
2394 | case REF_TRANSACTION_OPEN: | |
2395 | /* No need to abort explicitly. */ | |
2396 | break; | |
2397 | case REF_TRANSACTION_PREPARED: | |
2398 | ret = refs->be->transaction_abort(refs, transaction, err); | |
2399 | break; | |
2400 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2401 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
2402 | break; |
2403 | default: | |
033abf97 | 2404 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2405 | break; |
2406 | } | |
2407 | ||
67541597 PS |
2408 | run_transaction_hook(transaction, "aborted"); |
2409 | ||
30173b88 MH |
2410 | ref_transaction_free(transaction); |
2411 | return ret; | |
2412 | } | |
2413 | ||
2414 | int ref_transaction_commit(struct ref_transaction *transaction, | |
2415 | struct strbuf *err) | |
2416 | { | |
2417 | struct ref_store *refs = transaction->ref_store; | |
2418 | int ret; | |
2419 | ||
2420 | switch (transaction->state) { | |
2421 | case REF_TRANSACTION_OPEN: | |
2422 | /* Need to prepare first. */ | |
2423 | ret = ref_transaction_prepare(transaction, err); | |
2424 | if (ret) | |
2425 | return ret; | |
2426 | break; | |
2427 | case REF_TRANSACTION_PREPARED: | |
2428 | /* Fall through to finish. */ | |
2429 | break; | |
2430 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2431 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2432 | break; |
2433 | default: | |
033abf97 | 2434 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2435 | break; |
2436 | } | |
2437 | ||
67541597 PS |
2438 | ret = refs->be->transaction_finish(refs, transaction, err); |
2439 | if (!ret) | |
2440 | run_transaction_hook(transaction, "committed"); | |
2441 | return ret; | |
127b42a1 | 2442 | } |
62665823 | 2443 | |
7d2df051 NTND |
2444 | int refs_verify_refname_available(struct ref_store *refs, |
2445 | const char *refname, | |
b05855b5 | 2446 | const struct string_list *extras, |
7d2df051 NTND |
2447 | const struct string_list *skip, |
2448 | struct strbuf *err) | |
62665823 | 2449 | { |
b05855b5 MH |
2450 | const char *slash; |
2451 | const char *extra_refname; | |
2452 | struct strbuf dirname = STRBUF_INIT; | |
2453 | struct strbuf referent = STRBUF_INIT; | |
2454 | struct object_id oid; | |
2455 | unsigned int type; | |
2456 | struct ref_iterator *iter; | |
2457 | int ok; | |
2458 | int ret = -1; | |
2459 | ||
2460 | /* | |
2461 | * For the sake of comments in this function, suppose that | |
2462 | * refname is "refs/foo/bar". | |
2463 | */ | |
2464 | ||
2465 | assert(err); | |
2466 | ||
2467 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2468 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
8b72fea7 HWN |
2469 | /* |
2470 | * Just saying "Is a directory" when we e.g. can't | |
2471 | * lock some multi-level ref isn't very informative, | |
2472 | * the user won't be told *what* is a directory, so | |
2473 | * let's not use strerror() below. | |
2474 | */ | |
2475 | int ignore_errno; | |
b05855b5 MH |
2476 | /* Expand dirname to the new prefix, not including the trailing slash: */ |
2477 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2478 | ||
2479 | /* | |
2480 | * We are still at a leading dir of the refname (e.g., | |
2481 | * "refs/foo"; if there is a reference with that name, | |
2482 | * it is a conflict, *unless* it is in skip. | |
2483 | */ | |
2484 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2485 | continue; | |
2486 | ||
8b72fea7 HWN |
2487 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, |
2488 | &type, &ignore_errno)) { | |
661558f0 | 2489 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2490 | dirname.buf, refname); |
2491 | goto cleanup; | |
2492 | } | |
2493 | ||
2494 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2495 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2496 | refname, dirname.buf); |
2497 | goto cleanup; | |
2498 | } | |
2499 | } | |
2500 | ||
2501 | /* | |
2502 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2503 | * There is no point in searching for a reference with that | |
2504 | * name, because a refname isn't considered to conflict with | |
2505 | * itself. But we still need to check for references whose | |
2506 | * names are in the "refs/foo/bar/" namespace, because they | |
2507 | * *do* conflict. | |
2508 | */ | |
2509 | strbuf_addstr(&dirname, refname + dirname.len); | |
2510 | strbuf_addch(&dirname, '/'); | |
2511 | ||
b269ac53 | 2512 | iter = refs_ref_iterator_begin(refs, dirname.buf, NULL, 0, |
b05855b5 MH |
2513 | DO_FOR_EACH_INCLUDE_BROKEN); |
2514 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2515 | if (skip && | |
2516 | string_list_has_string(skip, iter->refname)) | |
2517 | continue; | |
2518 | ||
661558f0 | 2519 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2520 | iter->refname, refname); |
2521 | ref_iterator_abort(iter); | |
2522 | goto cleanup; | |
2523 | } | |
2524 | ||
2525 | if (ok != ITER_DONE) | |
033abf97 | 2526 | BUG("error while iterating over references"); |
b05855b5 MH |
2527 | |
2528 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2529 | if (extra_refname) | |
661558f0 | 2530 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2531 | refname, extra_refname); |
2532 | else | |
2533 | ret = 0; | |
2534 | ||
2535 | cleanup: | |
2536 | strbuf_release(&referent); | |
2537 | strbuf_release(&dirname); | |
2538 | return ret; | |
62665823 | 2539 | } |
e3688bd6 | 2540 | |
7d2df051 | 2541 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
e3688bd6 | 2542 | { |
e3688bd6 | 2543 | struct ref_iterator *iter; |
4a6067cd | 2544 | struct do_for_each_ref_help hp = { fn, cb_data }; |
e3688bd6 DT |
2545 | |
2546 | iter = refs->be->reflog_iterator_begin(refs); | |
2547 | ||
4a6067cd SB |
2548 | return do_for_each_repo_ref_iterator(the_repository, iter, |
2549 | do_for_each_ref_helper, &hp); | |
e3688bd6 DT |
2550 | } |
2551 | ||
7d2df051 | 2552 | int for_each_reflog(each_ref_fn fn, void *cb_data) |
e3688bd6 | 2553 | { |
23a3f0cb | 2554 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2555 | } |
e3688bd6 | 2556 | |
7d2df051 NTND |
2557 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2558 | const char *refname, | |
2559 | each_reflog_ent_fn fn, | |
2560 | void *cb_data) | |
2561 | { | |
e3688bd6 DT |
2562 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2563 | fn, cb_data); | |
2564 | } | |
2565 | ||
7d2df051 NTND |
2566 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2567 | void *cb_data) | |
2568 | { | |
23a3f0cb | 2569 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2570 | refname, fn, cb_data); |
2571 | } | |
2572 | ||
2573 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2574 | each_reflog_ent_fn fn, void *cb_data) | |
2575 | { | |
2576 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2577 | } | |
2578 | ||
e3688bd6 DT |
2579 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2580 | void *cb_data) | |
2581 | { | |
23a3f0cb | 2582 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2583 | fn, cb_data); |
2584 | } | |
e3688bd6 | 2585 | |
7d2df051 NTND |
2586 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2587 | { | |
2588 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2589 | } |
2590 | ||
2591 | int reflog_exists(const char *refname) | |
2592 | { | |
23a3f0cb | 2593 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2594 | } |
e3688bd6 | 2595 | |
7d2df051 | 2596 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
7b089120 | 2597 | struct strbuf *err) |
7d2df051 | 2598 | { |
7b089120 | 2599 | return refs->be->create_reflog(refs, refname, err); |
e3688bd6 DT |
2600 | } |
2601 | ||
7b089120 | 2602 | int safe_create_reflog(const char *refname, struct strbuf *err) |
e3688bd6 | 2603 | { |
23a3f0cb | 2604 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7b089120 | 2605 | err); |
7d2df051 | 2606 | } |
e3688bd6 | 2607 | |
7d2df051 NTND |
2608 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2609 | { | |
2610 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2611 | } |
2612 | ||
2613 | int delete_reflog(const char *refname) | |
2614 | { | |
23a3f0cb | 2615 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2616 | } |
e3688bd6 | 2617 | |
7d2df051 | 2618 | int refs_reflog_expire(struct ref_store *refs, |
cc40b5ce | 2619 | const char *refname, |
7d2df051 NTND |
2620 | unsigned int flags, |
2621 | reflog_expiry_prepare_fn prepare_fn, | |
2622 | reflog_expiry_should_prune_fn should_prune_fn, | |
2623 | reflog_expiry_cleanup_fn cleanup_fn, | |
2624 | void *policy_cb_data) | |
2625 | { | |
cc40b5ce | 2626 | return refs->be->reflog_expire(refs, refname, flags, |
7d2df051 NTND |
2627 | prepare_fn, should_prune_fn, |
2628 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2629 | } |
2630 | ||
cc40b5ce | 2631 | int reflog_expire(const char *refname, |
e3688bd6 DT |
2632 | unsigned int flags, |
2633 | reflog_expiry_prepare_fn prepare_fn, | |
2634 | reflog_expiry_should_prune_fn should_prune_fn, | |
2635 | reflog_expiry_cleanup_fn cleanup_fn, | |
2636 | void *policy_cb_data) | |
2637 | { | |
23a3f0cb | 2638 | return refs_reflog_expire(get_main_ref_store(the_repository), |
cc40b5ce | 2639 | refname, flags, |
7d2df051 NTND |
2640 | prepare_fn, should_prune_fn, |
2641 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2642 | } |
fc681463 DT |
2643 | |
2644 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2645 | struct strbuf *err) | |
2646 | { | |
c0fe4e8b | 2647 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2648 | |
2649 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2650 | } | |
a27dcf89 | 2651 | |
4f2ba2d0 PS |
2652 | void ref_transaction_for_each_queued_update(struct ref_transaction *transaction, |
2653 | ref_transaction_for_each_queued_update_fn cb, | |
2654 | void *cb_data) | |
2655 | { | |
2656 | int i; | |
2657 | ||
2658 | for (i = 0; i < transaction->nr; i++) { | |
2659 | struct ref_update *update = transaction->updates[i]; | |
2660 | ||
2661 | cb(update->refname, | |
2662 | (update->flags & REF_HAVE_OLD) ? &update->old_oid : NULL, | |
2663 | (update->flags & REF_HAVE_NEW) ? &update->new_oid : NULL, | |
2664 | cb_data); | |
2665 | } | |
2666 | } | |
2667 | ||
523fa69c | 2668 | int refs_delete_refs(struct ref_store *refs, const char *logmsg, |
64da4199 | 2669 | struct string_list *refnames, unsigned int flags) |
a27dcf89 | 2670 | { |
d6f8e729 PS |
2671 | struct ref_transaction *transaction; |
2672 | struct strbuf err = STRBUF_INIT; | |
2673 | struct string_list_item *item; | |
2674 | int ret = 0, failures = 0; | |
523fa69c | 2675 | char *msg; |
d6f8e729 PS |
2676 | |
2677 | if (!refnames->nr) | |
2678 | return 0; | |
523fa69c JH |
2679 | |
2680 | msg = normalize_reflog_message(logmsg); | |
d6f8e729 PS |
2681 | |
2682 | /* | |
2683 | * Since we don't check the references' old_oids, the | |
2684 | * individual updates can't fail, so we can pack all of the | |
2685 | * updates into a single transaction. | |
2686 | */ | |
2687 | transaction = ref_store_transaction_begin(refs, &err); | |
2688 | if (!transaction) { | |
2689 | ret = error("%s", err.buf); | |
2690 | goto out; | |
2691 | } | |
2692 | ||
2693 | for_each_string_list_item(item, refnames) { | |
2694 | ret = ref_transaction_delete(transaction, item->string, | |
2695 | NULL, flags, msg, &err); | |
2696 | if (ret) { | |
2697 | warning(_("could not delete reference %s: %s"), | |
2698 | item->string, err.buf); | |
2699 | strbuf_reset(&err); | |
2700 | failures = 1; | |
2701 | } | |
2702 | } | |
2703 | ||
2704 | ret = ref_transaction_commit(transaction, &err); | |
2705 | if (ret) { | |
2706 | if (refnames->nr == 1) | |
2707 | error(_("could not delete reference %s: %s"), | |
2708 | refnames->items[0].string, err.buf); | |
2709 | else | |
2710 | error(_("could not delete references: %s"), err.buf); | |
2711 | } | |
2712 | ||
2713 | out: | |
2714 | if (!ret && failures) | |
2715 | ret = -1; | |
2716 | ref_transaction_free(transaction); | |
2717 | strbuf_release(&err); | |
523fa69c | 2718 | free(msg); |
d6f8e729 | 2719 | return ret; |
a27dcf89 | 2720 | } |
9b6b40d9 | 2721 | |
64da4199 MH |
2722 | int delete_refs(const char *msg, struct string_list *refnames, |
2723 | unsigned int flags) | |
9b6b40d9 | 2724 | { |
23a3f0cb | 2725 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2726 | } |
9b6b40d9 | 2727 | |
7d2df051 NTND |
2728 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2729 | const char *newref, const char *logmsg) | |
2730 | { | |
523fa69c JH |
2731 | char *msg; |
2732 | int retval; | |
2733 | ||
2734 | msg = normalize_reflog_message(logmsg); | |
2735 | retval = refs->be->rename_ref(refs, oldref, newref, msg); | |
2736 | free(msg); | |
2737 | return retval; | |
9b6b40d9 | 2738 | } |
7d2df051 NTND |
2739 | |
2740 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2741 | { | |
23a3f0cb | 2742 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2743 | } |
52d59cc6 SD |
2744 | |
2745 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2746 | const char *newref, const char *logmsg) | |
2747 | { | |
523fa69c JH |
2748 | char *msg; |
2749 | int retval; | |
2750 | ||
2751 | msg = normalize_reflog_message(logmsg); | |
2752 | retval = refs->be->copy_ref(refs, oldref, newref, msg); | |
2753 | free(msg); | |
2754 | return retval; | |
52d59cc6 SD |
2755 | } |
2756 | ||
2757 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2758 | { | |
23a3f0cb | 2759 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2760 | } |