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Commit | Line | Data |
---|---|---|
7bd9bcf3 MH |
1 | /* |
2 | * The backend-independent part of the reference module. | |
3 | */ | |
4 | ||
95fc7512 | 5 | #include "cache.h" |
b2141fc1 | 6 | #include "config.h" |
7d4558c4 | 7 | #include "hashmap.h" |
697cc8ef | 8 | #include "lockfile.h" |
b05855b5 | 9 | #include "iterator.h" |
85023577 | 10 | #include "refs.h" |
4cb77009 | 11 | #include "refs/refs-internal.h" |
67541597 | 12 | #include "run-command.h" |
cbd53a21 | 13 | #include "object-store.h" |
cf0adba7 JH |
14 | #include "object.h" |
15 | #include "tag.h" | |
5d0bc90e | 16 | #include "submodule.h" |
17eff96b | 17 | #include "worktree.h" |
b4be7410 | 18 | #include "argv-array.h" |
23a3f0cb | 19 | #include "repository.h" |
67541597 | 20 | #include "sigchain.h" |
3581d793 | 21 | |
3dce444f RS |
22 | /* |
23 | * List of all available backends | |
24 | */ | |
25 | static struct ref_storage_be *refs_backends = &refs_be_files; | |
26 | ||
27 | static struct ref_storage_be *find_ref_storage_backend(const char *name) | |
28 | { | |
29 | struct ref_storage_be *be; | |
30 | for (be = refs_backends; be; be = be->next) | |
31 | if (!strcmp(be->name, name)) | |
32 | return be; | |
33 | return NULL; | |
34 | } | |
35 | ||
36 | int ref_storage_backend_exists(const char *name) | |
37 | { | |
38 | return find_ref_storage_backend(name) != NULL; | |
39 | } | |
40 | ||
bc5fd6d3 | 41 | /* |
dde8a902 DT |
42 | * How to handle various characters in refnames: |
43 | * 0: An acceptable character for refs | |
5e650228 JH |
44 | * 1: End-of-component |
45 | * 2: ., look for a preceding . to reject .. in refs | |
46 | * 3: {, look for a preceding @ to reject @{ in refs | |
53a8555e | 47 | * 4: A bad character: ASCII control characters, and |
cd377f45 JK |
48 | * ":", "?", "[", "\", "^", "~", SP, or TAB |
49 | * 5: *, reject unless REFNAME_REFSPEC_PATTERN is set | |
dde8a902 DT |
50 | */ |
51 | static unsigned char refname_disposition[256] = { | |
5e650228 JH |
52 | 1, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, |
53 | 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, | |
cd377f45 | 54 | 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 2, 1, |
5e650228 | 55 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 0, 4, |
dde8a902 | 56 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, |
5e650228 JH |
57 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 4, 0, |
58 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
59 | 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 4, 4 | |
dde8a902 DT |
60 | }; |
61 | ||
62 | /* | |
63 | * Try to read one refname component from the front of refname. | |
64 | * Return the length of the component found, or -1 if the component is | |
65 | * not legal. It is legal if it is something reasonable to have under | |
66 | * ".git/refs/"; We do not like it if: | |
bc5fd6d3 | 67 | * |
1de16aec | 68 | * - it begins with ".", or |
bc5fd6d3 | 69 | * - it has double dots "..", or |
53a8555e | 70 | * - it has ASCII control characters, or |
cd377f45 JK |
71 | * - it has ":", "?", "[", "\", "^", "~", SP, or TAB anywhere, or |
72 | * - it has "*" anywhere unless REFNAME_REFSPEC_PATTERN is set, or | |
53a8555e JK |
73 | * - it ends with a "/", or |
74 | * - it ends with ".lock", or | |
75 | * - it contains a "@{" portion | |
1de16aec NTND |
76 | * |
77 | * When sanitized is not NULL, instead of rejecting the input refname | |
78 | * as an error, try to come up with a usable replacement for the input | |
79 | * refname in it. | |
bc5fd6d3 | 80 | */ |
1de16aec NTND |
81 | static int check_refname_component(const char *refname, int *flags, |
82 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
83 | { |
84 | const char *cp; | |
85 | char last = '\0'; | |
1de16aec NTND |
86 | size_t component_start = 0; /* garbage - not a reasonable initial value */ |
87 | ||
88 | if (sanitized) | |
89 | component_start = sanitized->len; | |
bc5fd6d3 MH |
90 | |
91 | for (cp = refname; ; cp++) { | |
dde8a902 DT |
92 | int ch = *cp & 255; |
93 | unsigned char disp = refname_disposition[ch]; | |
1de16aec NTND |
94 | |
95 | if (sanitized && disp != 1) | |
96 | strbuf_addch(sanitized, ch); | |
97 | ||
dde8a902 | 98 | switch (disp) { |
5e650228 | 99 | case 1: |
dde8a902 | 100 | goto out; |
5e650228 | 101 | case 2: |
1de16aec NTND |
102 | if (last == '.') { /* Refname contains "..". */ |
103 | if (sanitized) | |
104 | /* collapse ".." to single "." */ | |
105 | strbuf_setlen(sanitized, sanitized->len - 1); | |
106 | else | |
107 | return -1; | |
108 | } | |
dde8a902 | 109 | break; |
5e650228 | 110 | case 3: |
1de16aec NTND |
111 | if (last == '@') { /* Refname contains "@{". */ |
112 | if (sanitized) | |
113 | sanitized->buf[sanitized->len-1] = '-'; | |
114 | else | |
115 | return -1; | |
116 | } | |
bc5fd6d3 | 117 | break; |
5e650228 | 118 | case 4: |
1de16aec NTND |
119 | /* forbidden char */ |
120 | if (sanitized) | |
121 | sanitized->buf[sanitized->len-1] = '-'; | |
122 | else | |
123 | return -1; | |
124 | break; | |
cd377f45 | 125 | case 5: |
1de16aec NTND |
126 | if (!(*flags & REFNAME_REFSPEC_PATTERN)) { |
127 | /* refspec can't be a pattern */ | |
128 | if (sanitized) | |
129 | sanitized->buf[sanitized->len-1] = '-'; | |
130 | else | |
131 | return -1; | |
132 | } | |
cd377f45 JK |
133 | |
134 | /* | |
135 | * Unset the pattern flag so that we only accept | |
136 | * a single asterisk for one side of refspec. | |
137 | */ | |
138 | *flags &= ~ REFNAME_REFSPEC_PATTERN; | |
139 | break; | |
dde8a902 | 140 | } |
bc5fd6d3 MH |
141 | last = ch; |
142 | } | |
dde8a902 | 143 | out: |
bc5fd6d3 | 144 | if (cp == refname) |
dac529e4 | 145 | return 0; /* Component has zero length. */ |
1de16aec NTND |
146 | |
147 | if (refname[0] == '.') { /* Component starts with '.'. */ | |
148 | if (sanitized) | |
149 | sanitized->buf[component_start] = '-'; | |
150 | else | |
151 | return -1; | |
152 | } | |
7108ad23 | 153 | if (cp - refname >= LOCK_SUFFIX_LEN && |
1de16aec NTND |
154 | !memcmp(cp - LOCK_SUFFIX_LEN, LOCK_SUFFIX, LOCK_SUFFIX_LEN)) { |
155 | if (!sanitized) | |
156 | return -1; | |
157 | /* Refname ends with ".lock". */ | |
158 | while (strbuf_strip_suffix(sanitized, LOCK_SUFFIX)) { | |
159 | /* try again in case we have .lock.lock */ | |
160 | } | |
161 | } | |
bc5fd6d3 MH |
162 | return cp - refname; |
163 | } | |
164 | ||
1de16aec NTND |
165 | static int check_or_sanitize_refname(const char *refname, int flags, |
166 | struct strbuf *sanitized) | |
bc5fd6d3 MH |
167 | { |
168 | int component_len, component_count = 0; | |
169 | ||
1de16aec | 170 | if (!strcmp(refname, "@")) { |
9ba89f48 | 171 | /* Refname is a single character '@'. */ |
1de16aec NTND |
172 | if (sanitized) |
173 | strbuf_addch(sanitized, '-'); | |
174 | else | |
175 | return -1; | |
176 | } | |
9ba89f48 | 177 | |
bc5fd6d3 | 178 | while (1) { |
1de16aec NTND |
179 | if (sanitized && sanitized->len) |
180 | strbuf_complete(sanitized, '/'); | |
181 | ||
bc5fd6d3 | 182 | /* We are at the start of a path component. */ |
1de16aec NTND |
183 | component_len = check_refname_component(refname, &flags, |
184 | sanitized); | |
185 | if (sanitized && component_len == 0) | |
186 | ; /* OK, omit empty component */ | |
187 | else if (component_len <= 0) | |
cd377f45 JK |
188 | return -1; |
189 | ||
bc5fd6d3 MH |
190 | component_count++; |
191 | if (refname[component_len] == '\0') | |
192 | break; | |
193 | /* Skip to next component. */ | |
194 | refname += component_len + 1; | |
195 | } | |
196 | ||
1de16aec NTND |
197 | if (refname[component_len - 1] == '.') { |
198 | /* Refname ends with '.'. */ | |
199 | if (sanitized) | |
200 | ; /* omit ending dot */ | |
201 | else | |
202 | return -1; | |
203 | } | |
bc5fd6d3 MH |
204 | if (!(flags & REFNAME_ALLOW_ONELEVEL) && component_count < 2) |
205 | return -1; /* Refname has only one component. */ | |
206 | return 0; | |
207 | } | |
208 | ||
1de16aec NTND |
209 | int check_refname_format(const char *refname, int flags) |
210 | { | |
211 | return check_or_sanitize_refname(refname, flags, NULL); | |
212 | } | |
213 | ||
214 | void sanitize_refname_component(const char *refname, struct strbuf *out) | |
215 | { | |
216 | if (check_or_sanitize_refname(refname, REFNAME_ALLOW_ONELEVEL, out)) | |
217 | BUG("sanitizing refname '%s' check returned error", refname); | |
218 | } | |
219 | ||
4cb77009 | 220 | int refname_is_safe(const char *refname) |
d0f810f0 | 221 | { |
39950fef MH |
222 | const char *rest; |
223 | ||
224 | if (skip_prefix(refname, "refs/", &rest)) { | |
d0f810f0 RS |
225 | char *buf; |
226 | int result; | |
e40f3557 MH |
227 | size_t restlen = strlen(rest); |
228 | ||
229 | /* rest must not be empty, or start or end with "/" */ | |
230 | if (!restlen || *rest == '/' || rest[restlen - 1] == '/') | |
231 | return 0; | |
d0f810f0 | 232 | |
d0f810f0 RS |
233 | /* |
234 | * Does the refname try to escape refs/? | |
235 | * For example: refs/foo/../bar is safe but refs/foo/../../bar | |
236 | * is not. | |
237 | */ | |
e40f3557 MH |
238 | buf = xmallocz(restlen); |
239 | result = !normalize_path_copy(buf, rest) && !strcmp(buf, rest); | |
d0f810f0 RS |
240 | free(buf); |
241 | return result; | |
242 | } | |
35db25c6 MH |
243 | |
244 | do { | |
d0f810f0 RS |
245 | if (!isupper(*refname) && *refname != '_') |
246 | return 0; | |
247 | refname++; | |
35db25c6 | 248 | } while (*refname); |
d0f810f0 RS |
249 | return 1; |
250 | } | |
251 | ||
67be7c5a MH |
252 | /* |
253 | * Return true if refname, which has the specified oid and flags, can | |
254 | * be resolved to an object in the database. If the referred-to object | |
255 | * does not exist, emit a warning and return false. | |
256 | */ | |
257 | int ref_resolves_to_object(const char *refname, | |
258 | const struct object_id *oid, | |
259 | unsigned int flags) | |
260 | { | |
261 | if (flags & REF_ISBROKEN) | |
262 | return 0; | |
98374a07 | 263 | if (!has_object_file(oid)) { |
661558f0 | 264 | error(_("%s does not point to a valid object!"), refname); |
67be7c5a MH |
265 | return 0; |
266 | } | |
267 | return 1; | |
268 | } | |
269 | ||
7d2df051 NTND |
270 | char *refs_resolve_refdup(struct ref_store *refs, |
271 | const char *refname, int resolve_flags, | |
0f2dc722 | 272 | struct object_id *oid, int *flags) |
7d2df051 NTND |
273 | { |
274 | const char *result; | |
275 | ||
276 | result = refs_resolve_ref_unsafe(refs, refname, resolve_flags, | |
49e61479 | 277 | oid, flags); |
7d2df051 NTND |
278 | return xstrdup_or_null(result); |
279 | } | |
280 | ||
7bd9bcf3 | 281 | char *resolve_refdup(const char *refname, int resolve_flags, |
0f2dc722 | 282 | struct object_id *oid, int *flags) |
e1e22e37 | 283 | { |
23a3f0cb | 284 | return refs_resolve_refdup(get_main_ref_store(the_repository), |
7d2df051 | 285 | refname, resolve_flags, |
0f2dc722 | 286 | oid, flags); |
cddc4258 MH |
287 | } |
288 | ||
7bd9bcf3 MH |
289 | /* The argument to filter_refs */ |
290 | struct ref_filter { | |
291 | const char *pattern; | |
9ab9b5df | 292 | const char *prefix; |
7bd9bcf3 MH |
293 | each_ref_fn *fn; |
294 | void *cb_data; | |
295 | }; | |
432ad41e | 296 | |
7d2df051 | 297 | int refs_read_ref_full(struct ref_store *refs, const char *refname, |
34c290a6 | 298 | int resolve_flags, struct object_id *oid, int *flags) |
732134ed | 299 | { |
49e61479 | 300 | if (refs_resolve_ref_unsafe(refs, refname, resolve_flags, oid, flags)) |
7bd9bcf3 MH |
301 | return 0; |
302 | return -1; | |
732134ed MH |
303 | } |
304 | ||
34c290a6 | 305 | int read_ref_full(const char *refname, int resolve_flags, struct object_id *oid, int *flags) |
7d2df051 | 306 | { |
23a3f0cb | 307 | return refs_read_ref_full(get_main_ref_store(the_repository), refname, |
34c290a6 | 308 | resolve_flags, oid, flags); |
7d2df051 NTND |
309 | } |
310 | ||
34c290a6 | 311 | int read_ref(const char *refname, struct object_id *oid) |
cddc4258 | 312 | { |
34c290a6 | 313 | return read_ref_full(refname, RESOLVE_REF_READING, oid, NULL); |
c774aab9 JP |
314 | } |
315 | ||
b3cd33d0 NTND |
316 | static int refs_ref_exists(struct ref_store *refs, const char *refname) |
317 | { | |
318 | return !!refs_resolve_ref_unsafe(refs, refname, RESOLVE_REF_READING, NULL, NULL); | |
319 | } | |
320 | ||
7bd9bcf3 | 321 | int ref_exists(const char *refname) |
bc5fd6d3 | 322 | { |
b3cd33d0 | 323 | return refs_ref_exists(get_main_ref_store(the_repository), refname); |
bc5fd6d3 MH |
324 | } |
325 | ||
7bd9bcf3 MH |
326 | static int filter_refs(const char *refname, const struct object_id *oid, |
327 | int flags, void *data) | |
432ad41e | 328 | { |
7bd9bcf3 MH |
329 | struct ref_filter *filter = (struct ref_filter *)data; |
330 | ||
55d34269 | 331 | if (wildmatch(filter->pattern, refname, 0)) |
7bd9bcf3 | 332 | return 0; |
9ab9b5df RA |
333 | if (filter->prefix) |
334 | skip_prefix(refname, filter->prefix, &refname); | |
7bd9bcf3 | 335 | return filter->fn(refname, oid, flags, filter->cb_data); |
432ad41e MH |
336 | } |
337 | ||
ac2ed0d7 | 338 | enum peel_status peel_object(const struct object_id *name, struct object_id *oid) |
c774aab9 | 339 | { |
0ebbcf70 | 340 | struct object *o = lookup_unknown_object(name); |
c774aab9 | 341 | |
7bd9bcf3 | 342 | if (o->type == OBJ_NONE) { |
0df8e965 | 343 | int type = oid_object_info(the_repository, name, NULL); |
1268dfac | 344 | if (type < 0 || !object_as_type(the_repository, o, type, 0)) |
7bd9bcf3 MH |
345 | return PEEL_INVALID; |
346 | } | |
bc5fd6d3 | 347 | |
7bd9bcf3 MH |
348 | if (o->type != OBJ_TAG) |
349 | return PEEL_NON_TAG; | |
e1980c9d | 350 | |
7bd9bcf3 MH |
351 | o = deref_tag_noverify(o); |
352 | if (!o) | |
353 | return PEEL_INVALID; | |
354 | ||
ac2ed0d7 | 355 | oidcpy(oid, &o->oid); |
7bd9bcf3 | 356 | return PEEL_PEELED; |
e1980c9d JH |
357 | } |
358 | ||
7bd9bcf3 MH |
359 | struct warn_if_dangling_data { |
360 | FILE *fp; | |
361 | const char *refname; | |
362 | const struct string_list *refnames; | |
363 | const char *msg_fmt; | |
364 | }; | |
bc5fd6d3 | 365 | |
7bd9bcf3 MH |
366 | static int warn_if_dangling_symref(const char *refname, const struct object_id *oid, |
367 | int flags, void *cb_data) | |
368 | { | |
369 | struct warn_if_dangling_data *d = cb_data; | |
370 | const char *resolves_to; | |
bc5fd6d3 | 371 | |
7bd9bcf3 MH |
372 | if (!(flags & REF_ISSYMREF)) |
373 | return 0; | |
bc5fd6d3 | 374 | |
744c040b | 375 | resolves_to = resolve_ref_unsafe(refname, 0, NULL, NULL); |
7bd9bcf3 MH |
376 | if (!resolves_to |
377 | || (d->refname | |
378 | ? strcmp(resolves_to, d->refname) | |
379 | : !string_list_has_string(d->refnames, resolves_to))) { | |
380 | return 0; | |
381 | } | |
bc5fd6d3 | 382 | |
7bd9bcf3 MH |
383 | fprintf(d->fp, d->msg_fmt, refname); |
384 | fputc('\n', d->fp); | |
385 | return 0; | |
bc5fd6d3 MH |
386 | } |
387 | ||
7bd9bcf3 | 388 | void warn_dangling_symref(FILE *fp, const char *msg_fmt, const char *refname) |
f348ac92 | 389 | { |
7bd9bcf3 MH |
390 | struct warn_if_dangling_data data; |
391 | ||
392 | data.fp = fp; | |
393 | data.refname = refname; | |
394 | data.refnames = NULL; | |
395 | data.msg_fmt = msg_fmt; | |
396 | for_each_rawref(warn_if_dangling_symref, &data); | |
f348ac92 MH |
397 | } |
398 | ||
7bd9bcf3 | 399 | void warn_dangling_symrefs(FILE *fp, const char *msg_fmt, const struct string_list *refnames) |
432ad41e | 400 | { |
7bd9bcf3 | 401 | struct warn_if_dangling_data data; |
432ad41e | 402 | |
7bd9bcf3 MH |
403 | data.fp = fp; |
404 | data.refname = NULL; | |
405 | data.refnames = refnames; | |
406 | data.msg_fmt = msg_fmt; | |
407 | for_each_rawref(warn_if_dangling_symref, &data); | |
432ad41e MH |
408 | } |
409 | ||
7d2df051 NTND |
410 | int refs_for_each_tag_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
411 | { | |
412 | return refs_for_each_ref_in(refs, "refs/tags/", fn, cb_data); | |
413 | } | |
414 | ||
7bd9bcf3 | 415 | int for_each_tag_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 416 | { |
23a3f0cb | 417 | return refs_for_each_tag_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
418 | } |
419 | ||
7d2df051 NTND |
420 | int refs_for_each_branch_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
421 | { | |
422 | return refs_for_each_ref_in(refs, "refs/heads/", fn, cb_data); | |
432ad41e MH |
423 | } |
424 | ||
7bd9bcf3 | 425 | int for_each_branch_ref(each_ref_fn fn, void *cb_data) |
432ad41e | 426 | { |
23a3f0cb | 427 | return refs_for_each_branch_ref(get_main_ref_store(the_repository), fn, cb_data); |
432ad41e MH |
428 | } |
429 | ||
7d2df051 NTND |
430 | int refs_for_each_remote_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
431 | { | |
432 | return refs_for_each_ref_in(refs, "refs/remotes/", fn, cb_data); | |
202a56a9 | 433 | } |
432ad41e | 434 | |
7bd9bcf3 | 435 | int for_each_remote_ref(each_ref_fn fn, void *cb_data) |
e9c4c111 | 436 | { |
23a3f0cb | 437 | return refs_for_each_remote_ref(get_main_ref_store(the_repository), fn, cb_data); |
202a56a9 MH |
438 | } |
439 | ||
7bd9bcf3 MH |
440 | int head_ref_namespaced(each_ref_fn fn, void *cb_data) |
441 | { | |
442 | struct strbuf buf = STRBUF_INIT; | |
443 | int ret = 0; | |
444 | struct object_id oid; | |
445 | int flag; | |
c774aab9 | 446 | |
7bd9bcf3 | 447 | strbuf_addf(&buf, "%sHEAD", get_git_namespace()); |
34c290a6 | 448 | if (!read_ref_full(buf.buf, RESOLVE_REF_READING, &oid, &flag)) |
7bd9bcf3 MH |
449 | ret = fn(buf.buf, &oid, flag, cb_data); |
450 | strbuf_release(&buf); | |
c774aab9 | 451 | |
7bd9bcf3 | 452 | return ret; |
e9c4c111 | 453 | } |
c774aab9 | 454 | |
65516f58 RA |
455 | void normalize_glob_ref(struct string_list_item *item, const char *prefix, |
456 | const char *pattern) | |
457 | { | |
458 | struct strbuf normalized_pattern = STRBUF_INIT; | |
459 | ||
460 | if (*pattern == '/') | |
461 | BUG("pattern must not start with '/'"); | |
462 | ||
463 | if (prefix) { | |
464 | strbuf_addstr(&normalized_pattern, prefix); | |
465 | } | |
466 | else if (!starts_with(pattern, "refs/")) | |
467 | strbuf_addstr(&normalized_pattern, "refs/"); | |
468 | strbuf_addstr(&normalized_pattern, pattern); | |
469 | strbuf_strip_suffix(&normalized_pattern, "/"); | |
470 | ||
471 | item->string = strbuf_detach(&normalized_pattern, NULL); | |
472 | item->util = has_glob_specials(pattern) ? NULL : item->string; | |
473 | strbuf_release(&normalized_pattern); | |
474 | } | |
475 | ||
7bd9bcf3 MH |
476 | int for_each_glob_ref_in(each_ref_fn fn, const char *pattern, |
477 | const char *prefix, void *cb_data) | |
662428f4 | 478 | { |
7bd9bcf3 MH |
479 | struct strbuf real_pattern = STRBUF_INIT; |
480 | struct ref_filter filter; | |
481 | int ret; | |
d08bae7e | 482 | |
59556548 | 483 | if (!prefix && !starts_with(pattern, "refs/")) |
d08bae7e | 484 | strbuf_addstr(&real_pattern, "refs/"); |
b09fe971 IL |
485 | else if (prefix) |
486 | strbuf_addstr(&real_pattern, prefix); | |
d08bae7e IL |
487 | strbuf_addstr(&real_pattern, pattern); |
488 | ||
894a9d33 | 489 | if (!has_glob_specials(pattern)) { |
9517e6b8 | 490 | /* Append implied '/' '*' if not present. */ |
00b6c178 | 491 | strbuf_complete(&real_pattern, '/'); |
d08bae7e IL |
492 | /* No need to check for '*', there is none. */ |
493 | strbuf_addch(&real_pattern, '*'); | |
494 | } | |
495 | ||
496 | filter.pattern = real_pattern.buf; | |
9ab9b5df | 497 | filter.prefix = prefix; |
d08bae7e IL |
498 | filter.fn = fn; |
499 | filter.cb_data = cb_data; | |
500 | ret = for_each_ref(filter_refs, &filter); | |
501 | ||
502 | strbuf_release(&real_pattern); | |
503 | return ret; | |
504 | } | |
505 | ||
b09fe971 IL |
506 | int for_each_glob_ref(each_ref_fn fn, const char *pattern, void *cb_data) |
507 | { | |
508 | return for_each_glob_ref_in(fn, pattern, NULL, cb_data); | |
509 | } | |
510 | ||
4577e483 | 511 | const char *prettify_refname(const char *name) |
a9c37a72 | 512 | { |
3e5b36c6 SG |
513 | if (skip_prefix(name, "refs/heads/", &name) || |
514 | skip_prefix(name, "refs/tags/", &name) || | |
515 | skip_prefix(name, "refs/remotes/", &name)) | |
516 | ; /* nothing */ | |
517 | return name; | |
a9c37a72 DB |
518 | } |
519 | ||
54457fe5 | 520 | static const char *ref_rev_parse_rules[] = { |
79803322 SP |
521 | "%.*s", |
522 | "refs/%.*s", | |
523 | "refs/tags/%.*s", | |
524 | "refs/heads/%.*s", | |
525 | "refs/remotes/%.*s", | |
526 | "refs/remotes/%.*s/HEAD", | |
527 | NULL | |
528 | }; | |
529 | ||
60650a48 JH |
530 | #define NUM_REV_PARSE_RULES (ARRAY_SIZE(ref_rev_parse_rules) - 1) |
531 | ||
532 | /* | |
533 | * Is it possible that the caller meant full_name with abbrev_name? | |
534 | * If so return a non-zero value to signal "yes"; the magnitude of | |
535 | * the returned value gives the precedence used for disambiguation. | |
536 | * | |
537 | * If abbrev_name cannot mean full_name, return 0. | |
538 | */ | |
54457fe5 | 539 | int refname_match(const char *abbrev_name, const char *full_name) |
79803322 SP |
540 | { |
541 | const char **p; | |
542 | const int abbrev_name_len = strlen(abbrev_name); | |
60650a48 | 543 | const int num_rules = NUM_REV_PARSE_RULES; |
79803322 | 544 | |
60650a48 JH |
545 | for (p = ref_rev_parse_rules; *p; p++) |
546 | if (!strcmp(full_name, mkpath(*p, abbrev_name_len, abbrev_name))) | |
547 | return &ref_rev_parse_rules[num_rules] - p; | |
79803322 SP |
548 | |
549 | return 0; | |
550 | } | |
551 | ||
b4be7410 BW |
552 | /* |
553 | * Given a 'prefix' expand it by the rules in 'ref_rev_parse_rules' and add | |
554 | * the results to 'prefixes' | |
555 | */ | |
556 | void expand_ref_prefix(struct argv_array *prefixes, const char *prefix) | |
557 | { | |
558 | const char **p; | |
559 | int len = strlen(prefix); | |
560 | ||
561 | for (p = ref_rev_parse_rules; *p; p++) | |
562 | argv_array_pushf(prefixes, *p, len, prefix); | |
563 | } | |
564 | ||
ff74f7f1 JH |
565 | /* |
566 | * *string and *len will only be substituted, and *string returned (for | |
567 | * later free()ing) if the string passed in is a magic short-hand form | |
568 | * to name a branch. | |
569 | */ | |
8f56e9d4 NTND |
570 | static char *substitute_branch_name(struct repository *r, |
571 | const char **string, int *len) | |
ff74f7f1 JH |
572 | { |
573 | struct strbuf buf = STRBUF_INIT; | |
8f56e9d4 | 574 | int ret = repo_interpret_branch_name(r, *string, *len, &buf, 0); |
ff74f7f1 JH |
575 | |
576 | if (ret == *len) { | |
577 | size_t size; | |
578 | *string = strbuf_detach(&buf, &size); | |
579 | *len = size; | |
580 | return (char *)*string; | |
581 | } | |
582 | ||
583 | return NULL; | |
584 | } | |
585 | ||
d8984c53 NTND |
586 | int repo_dwim_ref(struct repository *r, const char *str, int len, |
587 | struct object_id *oid, char **ref) | |
ff74f7f1 | 588 | { |
d8984c53 NTND |
589 | char *last_branch = substitute_branch_name(r, &str, &len); |
590 | int refs_found = expand_ref(r, str, len, oid, ref); | |
41da7111 NTND |
591 | free(last_branch); |
592 | return refs_found; | |
593 | } | |
594 | ||
d8984c53 NTND |
595 | int dwim_ref(const char *str, int len, struct object_id *oid, char **ref) |
596 | { | |
597 | return repo_dwim_ref(the_repository, str, len, oid, ref); | |
598 | } | |
599 | ||
0b1dbf53 NTND |
600 | int expand_ref(struct repository *repo, const char *str, int len, |
601 | struct object_id *oid, char **ref) | |
41da7111 | 602 | { |
ff74f7f1 JH |
603 | const char **p, *r; |
604 | int refs_found = 0; | |
6cd4a898 | 605 | struct strbuf fullref = STRBUF_INIT; |
ff74f7f1 JH |
606 | |
607 | *ref = NULL; | |
608 | for (p = ref_rev_parse_rules; *p; p++) { | |
cca5fa64 | 609 | struct object_id oid_from_ref; |
610 | struct object_id *this_result; | |
ff74f7f1 JH |
611 | int flag; |
612 | ||
cca5fa64 | 613 | this_result = refs_found ? &oid_from_ref : oid; |
6cd4a898 JK |
614 | strbuf_reset(&fullref); |
615 | strbuf_addf(&fullref, *p, len, str); | |
0b1dbf53 NTND |
616 | r = refs_resolve_ref_unsafe(get_main_ref_store(repo), |
617 | fullref.buf, RESOLVE_REF_READING, | |
618 | this_result, &flag); | |
ff74f7f1 JH |
619 | if (r) { |
620 | if (!refs_found++) | |
621 | *ref = xstrdup(r); | |
622 | if (!warn_ambiguous_refs) | |
623 | break; | |
6cd4a898 | 624 | } else if ((flag & REF_ISSYMREF) && strcmp(fullref.buf, "HEAD")) { |
661558f0 | 625 | warning(_("ignoring dangling symref %s"), fullref.buf); |
6cd4a898 | 626 | } else if ((flag & REF_ISBROKEN) && strchr(fullref.buf, '/')) { |
661558f0 | 627 | warning(_("ignoring broken ref %s"), fullref.buf); |
55956350 | 628 | } |
ff74f7f1 | 629 | } |
6cd4a898 | 630 | strbuf_release(&fullref); |
ff74f7f1 JH |
631 | return refs_found; |
632 | } | |
633 | ||
56700903 NTND |
634 | int repo_dwim_log(struct repository *r, const char *str, int len, |
635 | struct object_id *oid, char **log) | |
ff74f7f1 | 636 | { |
56700903 NTND |
637 | struct ref_store *refs = get_main_ref_store(r); |
638 | char *last_branch = substitute_branch_name(r, &str, &len); | |
ff74f7f1 JH |
639 | const char **p; |
640 | int logs_found = 0; | |
6cd4a898 | 641 | struct strbuf path = STRBUF_INIT; |
ff74f7f1 JH |
642 | |
643 | *log = NULL; | |
644 | for (p = ref_rev_parse_rules; *p; p++) { | |
334dc52f | 645 | struct object_id hash; |
ff74f7f1 JH |
646 | const char *ref, *it; |
647 | ||
6cd4a898 JK |
648 | strbuf_reset(&path); |
649 | strbuf_addf(&path, *p, len, str); | |
56700903 NTND |
650 | ref = refs_resolve_ref_unsafe(refs, path.buf, |
651 | RESOLVE_REF_READING, | |
652 | &hash, NULL); | |
ff74f7f1 JH |
653 | if (!ref) |
654 | continue; | |
56700903 | 655 | if (refs_reflog_exists(refs, path.buf)) |
6cd4a898 | 656 | it = path.buf; |
56700903 NTND |
657 | else if (strcmp(ref, path.buf) && |
658 | refs_reflog_exists(refs, ref)) | |
ff74f7f1 JH |
659 | it = ref; |
660 | else | |
661 | continue; | |
662 | if (!logs_found++) { | |
663 | *log = xstrdup(it); | |
334dc52f | 664 | oidcpy(oid, &hash); |
ff74f7f1 | 665 | } |
7bd9bcf3 MH |
666 | if (!warn_ambiguous_refs) |
667 | break; | |
c0277d15 | 668 | } |
6cd4a898 | 669 | strbuf_release(&path); |
7bd9bcf3 MH |
670 | free(last_branch); |
671 | return logs_found; | |
2ddb5d17 BK |
672 | } |
673 | ||
56700903 NTND |
674 | int dwim_log(const char *str, int len, struct object_id *oid, char **log) |
675 | { | |
676 | return repo_dwim_log(the_repository, str, len, oid, log); | |
677 | } | |
678 | ||
266b1827 DT |
679 | static int is_per_worktree_ref(const char *refname) |
680 | { | |
ce414b33 | 681 | return !strcmp(refname, "HEAD") || |
8aff1a9c | 682 | starts_with(refname, "refs/worktree/") || |
a9be29c9 JS |
683 | starts_with(refname, "refs/bisect/") || |
684 | starts_with(refname, "refs/rewritten/"); | |
266b1827 DT |
685 | } |
686 | ||
687 | static int is_pseudoref_syntax(const char *refname) | |
688 | { | |
689 | const char *c; | |
690 | ||
691 | for (c = refname; *c; c++) { | |
692 | if (!isupper(*c) && *c != '-' && *c != '_') | |
693 | return 0; | |
694 | } | |
695 | ||
696 | return 1; | |
697 | } | |
698 | ||
3a3b9d8c NTND |
699 | static int is_main_pseudoref_syntax(const char *refname) |
700 | { | |
701 | return skip_prefix(refname, "main-worktree/", &refname) && | |
702 | *refname && | |
703 | is_pseudoref_syntax(refname); | |
704 | } | |
705 | ||
706 | static int is_other_pseudoref_syntax(const char *refname) | |
707 | { | |
708 | if (!skip_prefix(refname, "worktrees/", &refname)) | |
709 | return 0; | |
710 | refname = strchr(refname, '/'); | |
711 | if (!refname || !refname[1]) | |
712 | return 0; | |
713 | return is_pseudoref_syntax(refname + 1); | |
714 | } | |
715 | ||
266b1827 DT |
716 | enum ref_type ref_type(const char *refname) |
717 | { | |
718 | if (is_per_worktree_ref(refname)) | |
719 | return REF_TYPE_PER_WORKTREE; | |
720 | if (is_pseudoref_syntax(refname)) | |
721 | return REF_TYPE_PSEUDOREF; | |
3a3b9d8c NTND |
722 | if (is_main_pseudoref_syntax(refname)) |
723 | return REF_TYPE_MAIN_PSEUDOREF; | |
724 | if (is_other_pseudoref_syntax(refname)) | |
725 | return REF_TYPE_OTHER_PSEUDOREF; | |
5c79f74f | 726 | return REF_TYPE_NORMAL; |
266b1827 DT |
727 | } |
728 | ||
4ff0f01c MH |
729 | long get_files_ref_lock_timeout_ms(void) |
730 | { | |
731 | static int configured = 0; | |
732 | ||
733 | /* The default timeout is 100 ms: */ | |
734 | static int timeout_ms = 100; | |
735 | ||
736 | if (!configured) { | |
737 | git_config_get_int("core.filesreflocktimeout", &timeout_ms); | |
738 | configured = 1; | |
739 | } | |
740 | ||
741 | return timeout_ms; | |
742 | } | |
743 | ||
ae077771 | 744 | static int write_pseudoref(const char *pseudoref, const struct object_id *oid, |
745 | const struct object_id *old_oid, struct strbuf *err) | |
74ec19d4 DT |
746 | { |
747 | const char *filename; | |
748 | int fd; | |
01084515 | 749 | struct lock_file lock = LOCK_INIT; |
74ec19d4 DT |
750 | struct strbuf buf = STRBUF_INIT; |
751 | int ret = -1; | |
752 | ||
6ee18216 | 753 | if (!oid) |
754 | return 0; | |
755 | ||
ae077771 | 756 | strbuf_addf(&buf, "%s\n", oid_to_hex(oid)); |
74ec19d4 DT |
757 | |
758 | filename = git_path("%s", pseudoref); | |
01084515 | 759 | fd = hold_lock_file_for_update_timeout(&lock, filename, 0, |
4ff0f01c | 760 | get_files_ref_lock_timeout_ms()); |
74ec19d4 | 761 | if (fd < 0) { |
661558f0 | 762 | strbuf_addf(err, _("could not open '%s' for writing: %s"), |
74ec19d4 | 763 | filename, strerror(errno)); |
aeb014f6 | 764 | goto done; |
74ec19d4 DT |
765 | } |
766 | ||
ae077771 | 767 | if (old_oid) { |
768 | struct object_id actual_old_oid; | |
2c3aed13 | 769 | |
db0210d4 MÅ |
770 | if (read_ref(pseudoref, &actual_old_oid)) { |
771 | if (!is_null_oid(old_oid)) { | |
661558f0 | 772 | strbuf_addf(err, _("could not read ref '%s'"), |
db0210d4 MÅ |
773 | pseudoref); |
774 | rollback_lock_file(&lock); | |
775 | goto done; | |
776 | } | |
777 | } else if (is_null_oid(old_oid)) { | |
661558f0 | 778 | strbuf_addf(err, _("ref '%s' already exists"), |
db0210d4 MÅ |
779 | pseudoref); |
780 | rollback_lock_file(&lock); | |
781 | goto done; | |
9001dc2a | 782 | } else if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 783 | strbuf_addf(err, _("unexpected object ID when writing '%s'"), |
c0bdd658 | 784 | pseudoref); |
74ec19d4 DT |
785 | rollback_lock_file(&lock); |
786 | goto done; | |
787 | } | |
788 | } | |
789 | ||
06f46f23 | 790 | if (write_in_full(fd, buf.buf, buf.len) < 0) { |
661558f0 | 791 | strbuf_addf(err, _("could not write to '%s'"), filename); |
74ec19d4 DT |
792 | rollback_lock_file(&lock); |
793 | goto done; | |
794 | } | |
795 | ||
796 | commit_lock_file(&lock); | |
797 | ret = 0; | |
798 | done: | |
799 | strbuf_release(&buf); | |
800 | return ret; | |
801 | } | |
802 | ||
2616a5e5 | 803 | static int delete_pseudoref(const char *pseudoref, const struct object_id *old_oid) |
74ec19d4 | 804 | { |
74ec19d4 DT |
805 | const char *filename; |
806 | ||
807 | filename = git_path("%s", pseudoref); | |
808 | ||
2616a5e5 | 809 | if (old_oid && !is_null_oid(old_oid)) { |
3c6fad4a | 810 | struct lock_file lock = LOCK_INIT; |
74ec19d4 | 811 | int fd; |
2616a5e5 | 812 | struct object_id actual_old_oid; |
74ec19d4 | 813 | |
4ff0f01c | 814 | fd = hold_lock_file_for_update_timeout( |
3c6fad4a | 815 | &lock, filename, 0, |
4ff0f01c | 816 | get_files_ref_lock_timeout_ms()); |
3c6fad4a MÅ |
817 | if (fd < 0) { |
818 | error_errno(_("could not open '%s' for writing"), | |
819 | filename); | |
820 | return -1; | |
821 | } | |
34c290a6 | 822 | if (read_ref(pseudoref, &actual_old_oid)) |
661558f0 | 823 | die(_("could not read ref '%s'"), pseudoref); |
9001dc2a | 824 | if (!oideq(&actual_old_oid, old_oid)) { |
661558f0 | 825 | error(_("unexpected object ID when deleting '%s'"), |
c0bdd658 | 826 | pseudoref); |
74ec19d4 DT |
827 | rollback_lock_file(&lock); |
828 | return -1; | |
a4c653df | 829 | } |
74ec19d4 DT |
830 | |
831 | unlink(filename); | |
832 | rollback_lock_file(&lock); | |
833 | } else { | |
834 | unlink(filename); | |
4bd18c43 | 835 | } |
a4c653df | 836 | |
4bd18c43 | 837 | return 0; |
95fc7512 | 838 | } |
d556fae2 | 839 | |
c0fe4e8b NTND |
840 | int refs_delete_ref(struct ref_store *refs, const char *msg, |
841 | const char *refname, | |
2616a5e5 | 842 | const struct object_id *old_oid, |
c0fe4e8b | 843 | unsigned int flags) |
41b625b0 | 844 | { |
7521cc46 | 845 | struct ref_transaction *transaction; |
a4c653df | 846 | struct strbuf err = STRBUF_INIT; |
8b5157e4 | 847 | |
c0fe4e8b | 848 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 849 | assert(refs == get_main_ref_store(the_repository)); |
2616a5e5 | 850 | return delete_pseudoref(refname, old_oid); |
c0fe4e8b | 851 | } |
d48744d1 | 852 | |
c0fe4e8b | 853 | transaction = ref_store_transaction_begin(refs, &err); |
7521cc46 | 854 | if (!transaction || |
89f3bbdd | 855 | ref_transaction_delete(transaction, refname, old_oid, |
755b49ae | 856 | flags, msg, &err) || |
db7516ab | 857 | ref_transaction_commit(transaction, &err)) { |
7521cc46 RS |
858 | error("%s", err.buf); |
859 | ref_transaction_free(transaction); | |
860 | strbuf_release(&err); | |
c0277d15 | 861 | return 1; |
41b625b0 | 862 | } |
7bd9bcf3 MH |
863 | ref_transaction_free(transaction); |
864 | strbuf_release(&err); | |
b531394d BC |
865 | return 0; |
866 | } | |
41b625b0 | 867 | |
c0fe4e8b | 868 | int delete_ref(const char *msg, const char *refname, |
2616a5e5 | 869 | const struct object_id *old_oid, unsigned int flags) |
c0fe4e8b | 870 | { |
23a3f0cb | 871 | return refs_delete_ref(get_main_ref_store(the_repository), msg, refname, |
2616a5e5 | 872 | old_oid, flags); |
c0fe4e8b NTND |
873 | } |
874 | ||
80a6c207 | 875 | void copy_reflog_msg(struct strbuf *sb, const char *msg) |
0ec29a47 | 876 | { |
0ec29a47 JH |
877 | char c; |
878 | int wasspace = 1; | |
8b5157e4 | 879 | |
80a6c207 | 880 | strbuf_addch(sb, '\t'); |
0ec29a47 JH |
881 | while ((c = *msg++)) { |
882 | if (wasspace && isspace(c)) | |
883 | continue; | |
884 | wasspace = isspace(c); | |
885 | if (wasspace) | |
886 | c = ' '; | |
80a6c207 | 887 | strbuf_addch(sb, c); |
a4c653df | 888 | } |
80a6c207 | 889 | strbuf_rtrim(sb); |
0ec29a47 | 890 | } |
8b5157e4 | 891 | |
4cb77009 | 892 | int should_autocreate_reflog(const char *refname) |
4e2bef57 | 893 | { |
341fb286 CW |
894 | switch (log_all_ref_updates) { |
895 | case LOG_REFS_ALWAYS: | |
896 | return 1; | |
897 | case LOG_REFS_NORMAL: | |
898 | return starts_with(refname, "refs/heads/") || | |
899 | starts_with(refname, "refs/remotes/") || | |
900 | starts_with(refname, "refs/notes/") || | |
901 | !strcmp(refname, "HEAD"); | |
902 | default: | |
4e2bef57 | 903 | return 0; |
341fb286 | 904 | } |
4e2bef57 DT |
905 | } |
906 | ||
e7e0f26e | 907 | int is_branch(const char *refname) |
c3b0dec5 | 908 | { |
59556548 | 909 | return !strcmp(refname, "HEAD") || starts_with(refname, "refs/heads/"); |
41b625b0 NP |
910 | } |
911 | ||
4207ed28 RS |
912 | struct read_ref_at_cb { |
913 | const char *refname; | |
dddbad72 | 914 | timestamp_t at_time; |
4207ed28 RS |
915 | int cnt; |
916 | int reccnt; | |
8eb36d94 | 917 | struct object_id *oid; |
4207ed28 RS |
918 | int found_it; |
919 | ||
8eb36d94 | 920 | struct object_id ooid; |
921 | struct object_id noid; | |
4207ed28 | 922 | int tz; |
dddbad72 | 923 | timestamp_t date; |
4207ed28 | 924 | char **msg; |
dddbad72 | 925 | timestamp_t *cutoff_time; |
4207ed28 RS |
926 | int *cutoff_tz; |
927 | int *cutoff_cnt; | |
928 | }; | |
929 | ||
9461d272 | 930 | static int read_ref_at_ent(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 931 | const char *email, timestamp_t timestamp, int tz, |
4207ed28 RS |
932 | const char *message, void *cb_data) |
933 | { | |
934 | struct read_ref_at_cb *cb = cb_data; | |
935 | ||
936 | cb->reccnt++; | |
937 | cb->tz = tz; | |
938 | cb->date = timestamp; | |
939 | ||
940 | if (timestamp <= cb->at_time || cb->cnt == 0) { | |
941 | if (cb->msg) | |
942 | *cb->msg = xstrdup(message); | |
943 | if (cb->cutoff_time) | |
944 | *cb->cutoff_time = timestamp; | |
945 | if (cb->cutoff_tz) | |
946 | *cb->cutoff_tz = tz; | |
947 | if (cb->cutoff_cnt) | |
948 | *cb->cutoff_cnt = cb->reccnt - 1; | |
949 | /* | |
78fb4579 | 950 | * we have not yet updated cb->[n|o]oid so they still |
4207ed28 RS |
951 | * hold the values for the previous record. |
952 | */ | |
8eb36d94 | 953 | if (!is_null_oid(&cb->ooid)) { |
954 | oidcpy(cb->oid, noid); | |
9001dc2a | 955 | if (!oideq(&cb->ooid, noid)) |
661558f0 | 956 | warning(_("log for ref %s has gap after %s"), |
a5481a6c | 957 | cb->refname, show_date(cb->date, cb->tz, DATE_MODE(RFC2822))); |
4207ed28 RS |
958 | } |
959 | else if (cb->date == cb->at_time) | |
8eb36d94 | 960 | oidcpy(cb->oid, noid); |
9001dc2a | 961 | else if (!oideq(noid, cb->oid)) |
661558f0 | 962 | warning(_("log for ref %s unexpectedly ended on %s"), |
4207ed28 | 963 | cb->refname, show_date(cb->date, cb->tz, |
a5481a6c | 964 | DATE_MODE(RFC2822))); |
8eb36d94 | 965 | oidcpy(&cb->ooid, ooid); |
966 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
967 | cb->found_it = 1; |
968 | return 1; | |
969 | } | |
8eb36d94 | 970 | oidcpy(&cb->ooid, ooid); |
971 | oidcpy(&cb->noid, noid); | |
4207ed28 RS |
972 | if (cb->cnt > 0) |
973 | cb->cnt--; | |
974 | return 0; | |
975 | } | |
976 | ||
9461d272 | 977 | static int read_ref_at_ent_oldest(struct object_id *ooid, struct object_id *noid, |
dddbad72 | 978 | const char *email, timestamp_t timestamp, |
4207ed28 RS |
979 | int tz, const char *message, void *cb_data) |
980 | { | |
981 | struct read_ref_at_cb *cb = cb_data; | |
982 | ||
983 | if (cb->msg) | |
984 | *cb->msg = xstrdup(message); | |
985 | if (cb->cutoff_time) | |
986 | *cb->cutoff_time = timestamp; | |
987 | if (cb->cutoff_tz) | |
988 | *cb->cutoff_tz = tz; | |
989 | if (cb->cutoff_cnt) | |
990 | *cb->cutoff_cnt = cb->reccnt; | |
8eb36d94 | 991 | oidcpy(cb->oid, ooid); |
992 | if (is_null_oid(cb->oid)) | |
993 | oidcpy(cb->oid, noid); | |
4207ed28 RS |
994 | /* We just want the first entry */ |
995 | return 1; | |
16d7cc90 JH |
996 | } |
997 | ||
7fdff474 NTND |
998 | int read_ref_at(struct ref_store *refs, const char *refname, |
999 | unsigned int flags, timestamp_t at_time, int cnt, | |
8eb36d94 | 1000 | struct object_id *oid, char **msg, |
dddbad72 | 1001 | timestamp_t *cutoff_time, int *cutoff_tz, int *cutoff_cnt) |
d556fae2 | 1002 | { |
4207ed28 | 1003 | struct read_ref_at_cb cb; |
d556fae2 | 1004 | |
4207ed28 RS |
1005 | memset(&cb, 0, sizeof(cb)); |
1006 | cb.refname = refname; | |
1007 | cb.at_time = at_time; | |
1008 | cb.cnt = cnt; | |
1009 | cb.msg = msg; | |
1010 | cb.cutoff_time = cutoff_time; | |
1011 | cb.cutoff_tz = cutoff_tz; | |
1012 | cb.cutoff_cnt = cutoff_cnt; | |
8eb36d94 | 1013 | cb.oid = oid; |
4207ed28 | 1014 | |
7fdff474 | 1015 | refs_for_each_reflog_ent_reverse(refs, refname, read_ref_at_ent, &cb); |
4207ed28 | 1016 | |
c41a87dd | 1017 | if (!cb.reccnt) { |
321c89bf | 1018 | if (flags & GET_OID_QUIETLY) |
c41a87dd DA |
1019 | exit(128); |
1020 | else | |
661558f0 | 1021 | die(_("log for %s is empty"), refname); |
c41a87dd | 1022 | } |
4207ed28 RS |
1023 | if (cb.found_it) |
1024 | return 0; | |
1025 | ||
7fdff474 | 1026 | refs_for_each_reflog_ent(refs, refname, read_ref_at_ent_oldest, &cb); |
d556fae2 | 1027 | |
16d7cc90 | 1028 | return 1; |
d556fae2 | 1029 | } |
2ff81662 | 1030 | |
c0fe4e8b NTND |
1031 | struct ref_transaction *ref_store_transaction_begin(struct ref_store *refs, |
1032 | struct strbuf *err) | |
caa4046c | 1033 | { |
c0fe4e8b | 1034 | struct ref_transaction *tr; |
5a603b04 JN |
1035 | assert(err); |
1036 | ||
c0fe4e8b NTND |
1037 | tr = xcalloc(1, sizeof(struct ref_transaction)); |
1038 | tr->ref_store = refs; | |
1039 | return tr; | |
1040 | } | |
1041 | ||
1042 | struct ref_transaction *ref_transaction_begin(struct strbuf *err) | |
1043 | { | |
23a3f0cb | 1044 | return ref_store_transaction_begin(get_main_ref_store(the_repository), err); |
caa4046c MH |
1045 | } |
1046 | ||
026bd1d3 | 1047 | void ref_transaction_free(struct ref_transaction *transaction) |
caa4046c | 1048 | { |
43a2dfde | 1049 | size_t i; |
caa4046c | 1050 | |
1b07255c RS |
1051 | if (!transaction) |
1052 | return; | |
1053 | ||
30173b88 MH |
1054 | switch (transaction->state) { |
1055 | case REF_TRANSACTION_OPEN: | |
1056 | case REF_TRANSACTION_CLOSED: | |
1057 | /* OK */ | |
1058 | break; | |
1059 | case REF_TRANSACTION_PREPARED: | |
033abf97 | 1060 | BUG("free called on a prepared reference transaction"); |
30173b88 MH |
1061 | break; |
1062 | default: | |
033abf97 | 1063 | BUG("unexpected reference transaction state"); |
30173b88 MH |
1064 | break; |
1065 | } | |
1066 | ||
db7516ab RS |
1067 | for (i = 0; i < transaction->nr; i++) { |
1068 | free(transaction->updates[i]->msg); | |
88615910 | 1069 | free(transaction->updates[i]); |
db7516ab | 1070 | } |
caa4046c MH |
1071 | free(transaction->updates); |
1072 | free(transaction); | |
1073 | } | |
1074 | ||
71564516 MH |
1075 | struct ref_update *ref_transaction_add_update( |
1076 | struct ref_transaction *transaction, | |
1077 | const char *refname, unsigned int flags, | |
89f3bbdd | 1078 | const struct object_id *new_oid, |
1079 | const struct object_id *old_oid, | |
71564516 | 1080 | const char *msg) |
caa4046c | 1081 | { |
96ffc06f | 1082 | struct ref_update *update; |
71564516 MH |
1083 | |
1084 | if (transaction->state != REF_TRANSACTION_OPEN) | |
033abf97 | 1085 | BUG("update called for transaction that is not open"); |
71564516 | 1086 | |
96ffc06f | 1087 | FLEX_ALLOC_STR(update, refname, refname); |
caa4046c MH |
1088 | ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc); |
1089 | transaction->updates[transaction->nr++] = update; | |
71564516 MH |
1090 | |
1091 | update->flags = flags; | |
1092 | ||
1093 | if (flags & REF_HAVE_NEW) | |
89f3bbdd | 1094 | oidcpy(&update->new_oid, new_oid); |
71564516 | 1095 | if (flags & REF_HAVE_OLD) |
89f3bbdd | 1096 | oidcpy(&update->old_oid, old_oid); |
13092a91 | 1097 | update->msg = xstrdup_or_null(msg); |
caa4046c MH |
1098 | return update; |
1099 | } | |
1100 | ||
8e34800e RS |
1101 | int ref_transaction_update(struct ref_transaction *transaction, |
1102 | const char *refname, | |
89f3bbdd | 1103 | const struct object_id *new_oid, |
1104 | const struct object_id *old_oid, | |
1d147bdf | 1105 | unsigned int flags, const char *msg, |
8e34800e | 1106 | struct strbuf *err) |
caa4046c | 1107 | { |
5a603b04 JN |
1108 | assert(err); |
1109 | ||
89f3bbdd | 1110 | if ((new_oid && !is_null_oid(new_oid)) ? |
8a679de6 MH |
1111 | check_refname_format(refname, REFNAME_ALLOW_ONELEVEL) : |
1112 | !refname_is_safe(refname)) { | |
661558f0 | 1113 | strbuf_addf(err, _("refusing to update ref with bad name '%s'"), |
d0f810f0 RS |
1114 | refname); |
1115 | return -1; | |
1116 | } | |
1117 | ||
a9bbbcec MH |
1118 | if (flags & ~REF_TRANSACTION_UPDATE_ALLOWED_FLAGS) |
1119 | BUG("illegal flags 0x%x passed to ref_transaction_update()", flags); | |
c788c54c | 1120 | |
89f3bbdd | 1121 | flags |= (new_oid ? REF_HAVE_NEW : 0) | (old_oid ? REF_HAVE_OLD : 0); |
71564516 MH |
1122 | |
1123 | ref_transaction_add_update(transaction, refname, flags, | |
89f3bbdd | 1124 | new_oid, old_oid, msg); |
8e34800e | 1125 | return 0; |
caa4046c MH |
1126 | } |
1127 | ||
b416af5b RS |
1128 | int ref_transaction_create(struct ref_transaction *transaction, |
1129 | const char *refname, | |
89f3bbdd | 1130 | const struct object_id *new_oid, |
fec14ec3 | 1131 | unsigned int flags, const char *msg, |
b416af5b | 1132 | struct strbuf *err) |
caa4046c | 1133 | { |
89f3bbdd | 1134 | if (!new_oid || is_null_oid(new_oid)) |
033abf97 | 1135 | BUG("create called without valid new_oid"); |
89f3bbdd | 1136 | return ref_transaction_update(transaction, refname, new_oid, |
1137 | &null_oid, flags, msg, err); | |
caa4046c MH |
1138 | } |
1139 | ||
8c8bdc0d RS |
1140 | int ref_transaction_delete(struct ref_transaction *transaction, |
1141 | const char *refname, | |
89f3bbdd | 1142 | const struct object_id *old_oid, |
fb5a6bb6 | 1143 | unsigned int flags, const char *msg, |
8c8bdc0d | 1144 | struct strbuf *err) |
caa4046c | 1145 | { |
89f3bbdd | 1146 | if (old_oid && is_null_oid(old_oid)) |
033abf97 | 1147 | BUG("delete called with old_oid set to zeros"); |
1d147bdf | 1148 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1149 | &null_oid, old_oid, |
1d147bdf | 1150 | flags, msg, err); |
caa4046c MH |
1151 | } |
1152 | ||
16180334 MH |
1153 | int ref_transaction_verify(struct ref_transaction *transaction, |
1154 | const char *refname, | |
89f3bbdd | 1155 | const struct object_id *old_oid, |
16180334 MH |
1156 | unsigned int flags, |
1157 | struct strbuf *err) | |
1158 | { | |
89f3bbdd | 1159 | if (!old_oid) |
033abf97 | 1160 | BUG("verify called with old_oid set to NULL"); |
16180334 | 1161 | return ref_transaction_update(transaction, refname, |
89f3bbdd | 1162 | NULL, old_oid, |
16180334 MH |
1163 | flags, NULL, err); |
1164 | } | |
1165 | ||
c0fe4e8b | 1166 | int refs_update_ref(struct ref_store *refs, const char *msg, |
ae077771 | 1167 | const char *refname, const struct object_id *new_oid, |
1168 | const struct object_id *old_oid, unsigned int flags, | |
c0fe4e8b | 1169 | enum action_on_err onerr) |
4738a333 | 1170 | { |
74ec19d4 | 1171 | struct ref_transaction *t = NULL; |
b4d75ac1 | 1172 | struct strbuf err = STRBUF_INIT; |
74ec19d4 | 1173 | int ret = 0; |
b4d75ac1 | 1174 | |
74ec19d4 | 1175 | if (ref_type(refname) == REF_TYPE_PSEUDOREF) { |
23a3f0cb | 1176 | assert(refs == get_main_ref_store(the_repository)); |
ae077771 | 1177 | ret = write_pseudoref(refname, new_oid, old_oid, &err); |
74ec19d4 | 1178 | } else { |
c0fe4e8b | 1179 | t = ref_store_transaction_begin(refs, &err); |
74ec19d4 | 1180 | if (!t || |
89f3bbdd | 1181 | ref_transaction_update(t, refname, new_oid, old_oid, |
74ec19d4 DT |
1182 | flags, msg, &err) || |
1183 | ref_transaction_commit(t, &err)) { | |
1184 | ret = 1; | |
1185 | ref_transaction_free(t); | |
1186 | } | |
1187 | } | |
1188 | if (ret) { | |
661558f0 | 1189 | const char *str = _("update_ref failed for ref '%s': %s"); |
b4d75ac1 | 1190 | |
b4d75ac1 RS |
1191 | switch (onerr) { |
1192 | case UPDATE_REFS_MSG_ON_ERR: | |
1193 | error(str, refname, err.buf); | |
1194 | break; | |
1195 | case UPDATE_REFS_DIE_ON_ERR: | |
1196 | die(str, refname, err.buf); | |
1197 | break; | |
1198 | case UPDATE_REFS_QUIET_ON_ERR: | |
1199 | break; | |
1200 | } | |
1201 | strbuf_release(&err); | |
4738a333 | 1202 | return 1; |
b4d75ac1 RS |
1203 | } |
1204 | strbuf_release(&err); | |
74ec19d4 DT |
1205 | if (t) |
1206 | ref_transaction_free(t); | |
b4d75ac1 | 1207 | return 0; |
4738a333 BK |
1208 | } |
1209 | ||
c0fe4e8b | 1210 | int update_ref(const char *msg, const char *refname, |
ae077771 | 1211 | const struct object_id *new_oid, |
1212 | const struct object_id *old_oid, | |
c0fe4e8b NTND |
1213 | unsigned int flags, enum action_on_err onerr) |
1214 | { | |
23a3f0cb | 1215 | return refs_update_ref(get_main_ref_store(the_repository), msg, refname, new_oid, |
ae077771 | 1216 | old_oid, flags, onerr); |
c0fe4e8b NTND |
1217 | } |
1218 | ||
546edf37 NTND |
1219 | char *refs_shorten_unambiguous_ref(struct ref_store *refs, |
1220 | const char *refname, int strict) | |
7c2b3029 JK |
1221 | { |
1222 | int i; | |
1223 | static char **scanf_fmts; | |
1224 | static int nr_rules; | |
1225 | char *short_name; | |
6cd4a898 | 1226 | struct strbuf resolved_buf = STRBUF_INIT; |
7c2b3029 | 1227 | |
7c2b3029 | 1228 | if (!nr_rules) { |
4346663a MH |
1229 | /* |
1230 | * Pre-generate scanf formats from ref_rev_parse_rules[]. | |
1231 | * Generate a format suitable for scanf from a | |
1232 | * ref_rev_parse_rules rule by interpolating "%s" at the | |
1233 | * location of the "%.*s". | |
1234 | */ | |
7c2b3029 | 1235 | size_t total_len = 0; |
84d5633f | 1236 | size_t offset = 0; |
7c2b3029 JK |
1237 | |
1238 | /* the rule list is NULL terminated, count them first */ | |
a4165851 | 1239 | for (nr_rules = 0; ref_rev_parse_rules[nr_rules]; nr_rules++) |
7902fe03 MH |
1240 | /* -2 for strlen("%.*s") - strlen("%s"); +1 for NUL */ |
1241 | total_len += strlen(ref_rev_parse_rules[nr_rules]) - 2 + 1; | |
7c2b3029 | 1242 | |
50492f7b | 1243 | scanf_fmts = xmalloc(st_add(st_mult(sizeof(char *), nr_rules), total_len)); |
7c2b3029 | 1244 | |
84d5633f | 1245 | offset = 0; |
7c2b3029 | 1246 | for (i = 0; i < nr_rules; i++) { |
4346663a | 1247 | assert(offset < total_len); |
84d5633f | 1248 | scanf_fmts[i] = (char *)&scanf_fmts[nr_rules] + offset; |
bf4baf1f JK |
1249 | offset += xsnprintf(scanf_fmts[i], total_len - offset, |
1250 | ref_rev_parse_rules[i], 2, "%s") + 1; | |
7c2b3029 JK |
1251 | } |
1252 | } | |
1253 | ||
1254 | /* bail out if there are no rules */ | |
1255 | if (!nr_rules) | |
dfefa935 | 1256 | return xstrdup(refname); |
7c2b3029 | 1257 | |
dfefa935 MH |
1258 | /* buffer for scanf result, at most refname must fit */ |
1259 | short_name = xstrdup(refname); | |
7c2b3029 JK |
1260 | |
1261 | /* skip first rule, it will always match */ | |
1262 | for (i = nr_rules - 1; i > 0 ; --i) { | |
1263 | int j; | |
6e7b3309 | 1264 | int rules_to_fail = i; |
7c2b3029 JK |
1265 | int short_name_len; |
1266 | ||
dfefa935 | 1267 | if (1 != sscanf(refname, scanf_fmts[i], short_name)) |
7c2b3029 JK |
1268 | continue; |
1269 | ||
1270 | short_name_len = strlen(short_name); | |
1271 | ||
6e7b3309 BW |
1272 | /* |
1273 | * in strict mode, all (except the matched one) rules | |
1274 | * must fail to resolve to a valid non-ambiguous ref | |
1275 | */ | |
1276 | if (strict) | |
1277 | rules_to_fail = nr_rules; | |
1278 | ||
7c2b3029 JK |
1279 | /* |
1280 | * check if the short name resolves to a valid ref, | |
1281 | * but use only rules prior to the matched one | |
1282 | */ | |
6e7b3309 | 1283 | for (j = 0; j < rules_to_fail; j++) { |
7c2b3029 | 1284 | const char *rule = ref_rev_parse_rules[j]; |
7c2b3029 | 1285 | |
6e7b3309 BW |
1286 | /* skip matched rule */ |
1287 | if (i == j) | |
1288 | continue; | |
1289 | ||
7c2b3029 JK |
1290 | /* |
1291 | * the short name is ambiguous, if it resolves | |
1292 | * (with this previous rule) to a valid ref | |
1293 | * read_ref() returns 0 on success | |
1294 | */ | |
6cd4a898 JK |
1295 | strbuf_reset(&resolved_buf); |
1296 | strbuf_addf(&resolved_buf, rule, | |
1297 | short_name_len, short_name); | |
546edf37 | 1298 | if (refs_ref_exists(refs, resolved_buf.buf)) |
7c2b3029 JK |
1299 | break; |
1300 | } | |
1301 | ||
1302 | /* | |
1303 | * short name is non-ambiguous if all previous rules | |
1304 | * haven't resolved to a valid ref | |
1305 | */ | |
6cd4a898 JK |
1306 | if (j == rules_to_fail) { |
1307 | strbuf_release(&resolved_buf); | |
7c2b3029 | 1308 | return short_name; |
6cd4a898 | 1309 | } |
7c2b3029 JK |
1310 | } |
1311 | ||
6cd4a898 | 1312 | strbuf_release(&resolved_buf); |
7c2b3029 | 1313 | free(short_name); |
dfefa935 | 1314 | return xstrdup(refname); |
7c2b3029 | 1315 | } |
daebaa78 | 1316 | |
546edf37 NTND |
1317 | char *shorten_unambiguous_ref(const char *refname, int strict) |
1318 | { | |
1319 | return refs_shorten_unambiguous_ref(get_main_ref_store(the_repository), | |
1320 | refname, strict); | |
1321 | } | |
1322 | ||
daebaa78 JH |
1323 | static struct string_list *hide_refs; |
1324 | ||
1325 | int parse_hide_refs_config(const char *var, const char *value, const char *section) | |
1326 | { | |
ad8c7cda | 1327 | const char *key; |
daebaa78 | 1328 | if (!strcmp("transfer.hiderefs", var) || |
ad8c7cda JK |
1329 | (!parse_config_key(var, section, NULL, NULL, &key) && |
1330 | !strcmp(key, "hiderefs"))) { | |
daebaa78 JH |
1331 | char *ref; |
1332 | int len; | |
1333 | ||
1334 | if (!value) | |
1335 | return config_error_nonbool(var); | |
1336 | ref = xstrdup(value); | |
1337 | len = strlen(ref); | |
1338 | while (len && ref[len - 1] == '/') | |
1339 | ref[--len] = '\0'; | |
1340 | if (!hide_refs) { | |
1341 | hide_refs = xcalloc(1, sizeof(*hide_refs)); | |
1342 | hide_refs->strdup_strings = 1; | |
1343 | } | |
1344 | string_list_append(hide_refs, ref); | |
1345 | } | |
1346 | return 0; | |
1347 | } | |
1348 | ||
78a766ab | 1349 | int ref_is_hidden(const char *refname, const char *refname_full) |
daebaa78 | 1350 | { |
2bc31d16 | 1351 | int i; |
daebaa78 JH |
1352 | |
1353 | if (!hide_refs) | |
1354 | return 0; | |
2bc31d16 JK |
1355 | for (i = hide_refs->nr - 1; i >= 0; i--) { |
1356 | const char *match = hide_refs->items[i].string; | |
78a766ab | 1357 | const char *subject; |
2bc31d16 | 1358 | int neg = 0; |
7a40a95e | 1359 | const char *p; |
2bc31d16 JK |
1360 | |
1361 | if (*match == '!') { | |
1362 | neg = 1; | |
1363 | match++; | |
1364 | } | |
1365 | ||
78a766ab LF |
1366 | if (*match == '^') { |
1367 | subject = refname_full; | |
1368 | match++; | |
1369 | } else { | |
1370 | subject = refname; | |
1371 | } | |
1372 | ||
1373 | /* refname can be NULL when namespaces are used. */ | |
7a40a95e CC |
1374 | if (subject && |
1375 | skip_prefix(subject, match, &p) && | |
1376 | (!*p || *p == '/')) | |
2bc31d16 | 1377 | return !neg; |
daebaa78 JH |
1378 | } |
1379 | return 0; | |
1380 | } | |
fa5b1830 | 1381 | |
0845122c DT |
1382 | const char *find_descendant_ref(const char *dirname, |
1383 | const struct string_list *extras, | |
1384 | const struct string_list *skip) | |
fa5b1830 | 1385 | { |
0845122c | 1386 | int pos; |
fa5b1830 | 1387 | |
0845122c DT |
1388 | if (!extras) |
1389 | return NULL; | |
fa5b1830 MH |
1390 | |
1391 | /* | |
0845122c DT |
1392 | * Look at the place where dirname would be inserted into |
1393 | * extras. If there is an entry at that position that starts | |
1394 | * with dirname (remember, dirname includes the trailing | |
1395 | * slash) and is not in skip, then we have a conflict. | |
fa5b1830 | 1396 | */ |
0845122c DT |
1397 | for (pos = string_list_find_insert_index(extras, dirname, 0); |
1398 | pos < extras->nr; pos++) { | |
1399 | const char *extra_refname = extras->items[pos].string; | |
fa5b1830 | 1400 | |
0845122c DT |
1401 | if (!starts_with(extra_refname, dirname)) |
1402 | break; | |
1403 | ||
1404 | if (!skip || !string_list_has_string(skip, extra_refname)) | |
1405 | return extra_refname; | |
fa5b1830 | 1406 | } |
0845122c DT |
1407 | return NULL; |
1408 | } | |
fa5b1830 | 1409 | |
7d2df051 NTND |
1410 | int refs_rename_ref_available(struct ref_store *refs, |
1411 | const char *old_refname, | |
1412 | const char *new_refname) | |
0845122c DT |
1413 | { |
1414 | struct string_list skip = STRING_LIST_INIT_NODUP; | |
1415 | struct strbuf err = STRBUF_INIT; | |
ff3a299c | 1416 | int ok; |
fa5b1830 | 1417 | |
ff3a299c | 1418 | string_list_insert(&skip, old_refname); |
7d2df051 NTND |
1419 | ok = !refs_verify_refname_available(refs, new_refname, |
1420 | NULL, &skip, &err); | |
ff3a299c | 1421 | if (!ok) |
0845122c DT |
1422 | error("%s", err.buf); |
1423 | ||
1424 | string_list_clear(&skip, 0); | |
1425 | strbuf_release(&err); | |
ff3a299c | 1426 | return ok; |
fa5b1830 | 1427 | } |
2bf68ed5 | 1428 | |
62f0b399 | 1429 | int refs_head_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
2bf68ed5 DT |
1430 | { |
1431 | struct object_id oid; | |
1432 | int flag; | |
1433 | ||
62f0b399 | 1434 | if (!refs_read_ref_full(refs, "HEAD", RESOLVE_REF_READING, |
34c290a6 | 1435 | &oid, &flag)) |
2bf68ed5 DT |
1436 | return fn("HEAD", &oid, flag, cb_data); |
1437 | ||
1438 | return 0; | |
1439 | } | |
1440 | ||
1441 | int head_ref(each_ref_fn fn, void *cb_data) | |
1442 | { | |
23a3f0cb | 1443 | return refs_head_ref(get_main_ref_store(the_repository), fn, cb_data); |
2bf68ed5 | 1444 | } |
93770590 | 1445 | |
e121b9cb MH |
1446 | struct ref_iterator *refs_ref_iterator_begin( |
1447 | struct ref_store *refs, | |
1448 | const char *prefix, int trim, int flags) | |
1449 | { | |
1450 | struct ref_iterator *iter; | |
1451 | ||
0a0865b8 MH |
1452 | if (ref_paranoia < 0) |
1453 | ref_paranoia = git_env_bool("GIT_REF_PARANOIA", 0); | |
1454 | if (ref_paranoia) | |
1455 | flags |= DO_FOR_EACH_INCLUDE_BROKEN; | |
1456 | ||
e121b9cb | 1457 | iter = refs->be->iterator_begin(refs, prefix, flags); |
c7599718 MH |
1458 | |
1459 | /* | |
1460 | * `iterator_begin()` already takes care of prefix, but we | |
1461 | * might need to do some trimming: | |
1462 | */ | |
1463 | if (trim) | |
1464 | iter = prefix_ref_iterator_begin(iter, "", trim); | |
e121b9cb | 1465 | |
8738a8a4 MH |
1466 | /* Sanity check for subclasses: */ |
1467 | if (!iter->ordered) | |
1468 | BUG("reference iterator is not ordered"); | |
1469 | ||
e121b9cb MH |
1470 | return iter; |
1471 | } | |
1472 | ||
4c4de895 MH |
1473 | /* |
1474 | * Call fn for each reference in the specified submodule for which the | |
1475 | * refname begins with prefix. If trim is non-zero, then trim that | |
1476 | * many characters off the beginning of each refname before passing | |
1477 | * the refname to fn. flags can be DO_FOR_EACH_INCLUDE_BROKEN to | |
1478 | * include broken references in the iteration. If fn ever returns a | |
1479 | * non-zero value, stop the iteration and return that value; | |
1480 | * otherwise, return 0. | |
1481 | */ | |
4a6067cd SB |
1482 | static int do_for_each_repo_ref(struct repository *r, const char *prefix, |
1483 | each_repo_ref_fn fn, int trim, int flags, | |
1484 | void *cb_data) | |
1485 | { | |
1486 | struct ref_iterator *iter; | |
1487 | struct ref_store *refs = get_main_ref_store(r); | |
1488 | ||
1489 | if (!refs) | |
1490 | return 0; | |
1491 | ||
1492 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); | |
1493 | ||
1494 | return do_for_each_repo_ref_iterator(r, iter, fn, cb_data); | |
1495 | } | |
1496 | ||
1497 | struct do_for_each_ref_help { | |
1498 | each_ref_fn *fn; | |
1499 | void *cb_data; | |
1500 | }; | |
1501 | ||
1502 | static int do_for_each_ref_helper(struct repository *r, | |
1503 | const char *refname, | |
1504 | const struct object_id *oid, | |
1505 | int flags, | |
1506 | void *cb_data) | |
1507 | { | |
1508 | struct do_for_each_ref_help *hp = cb_data; | |
1509 | ||
1510 | return hp->fn(refname, oid, flags, hp->cb_data); | |
1511 | } | |
1512 | ||
7d2df051 | 1513 | static int do_for_each_ref(struct ref_store *refs, const char *prefix, |
4c4de895 MH |
1514 | each_ref_fn fn, int trim, int flags, void *cb_data) |
1515 | { | |
1516 | struct ref_iterator *iter; | |
4a6067cd | 1517 | struct do_for_each_ref_help hp = { fn, cb_data }; |
4c4de895 | 1518 | |
00eebe35 MH |
1519 | if (!refs) |
1520 | return 0; | |
1521 | ||
e121b9cb | 1522 | iter = refs_ref_iterator_begin(refs, prefix, trim, flags); |
4c4de895 | 1523 | |
4a6067cd SB |
1524 | return do_for_each_repo_ref_iterator(the_repository, iter, |
1525 | do_for_each_ref_helper, &hp); | |
4c4de895 MH |
1526 | } |
1527 | ||
7d2df051 NTND |
1528 | int refs_for_each_ref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
1529 | { | |
1530 | return do_for_each_ref(refs, "", fn, 0, 0, cb_data); | |
1531 | } | |
1532 | ||
93770590 DT |
1533 | int for_each_ref(each_ref_fn fn, void *cb_data) |
1534 | { | |
23a3f0cb | 1535 | return refs_for_each_ref(get_main_ref_store(the_repository), fn, cb_data); |
93770590 DT |
1536 | } |
1537 | ||
7d2df051 NTND |
1538 | int refs_for_each_ref_in(struct ref_store *refs, const char *prefix, |
1539 | each_ref_fn fn, void *cb_data) | |
1540 | { | |
1541 | return do_for_each_ref(refs, prefix, fn, strlen(prefix), 0, cb_data); | |
93770590 DT |
1542 | } |
1543 | ||
1544 | int for_each_ref_in(const char *prefix, each_ref_fn fn, void *cb_data) | |
1545 | { | |
23a3f0cb | 1546 | return refs_for_each_ref_in(get_main_ref_store(the_repository), prefix, fn, cb_data); |
93770590 DT |
1547 | } |
1548 | ||
1549 | int for_each_fullref_in(const char *prefix, each_ref_fn fn, void *cb_data, unsigned int broken) | |
1550 | { | |
1551 | unsigned int flag = 0; | |
1552 | ||
1553 | if (broken) | |
1554 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
23a3f0cb | 1555 | return do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1556 | prefix, fn, 0, flag, cb_data); |
93770590 DT |
1557 | } |
1558 | ||
073cf63c NTND |
1559 | int refs_for_each_fullref_in(struct ref_store *refs, const char *prefix, |
1560 | each_ref_fn fn, void *cb_data, | |
1561 | unsigned int broken) | |
03df567f MH |
1562 | { |
1563 | unsigned int flag = 0; | |
1564 | ||
1565 | if (broken) | |
1566 | flag = DO_FOR_EACH_INCLUDE_BROKEN; | |
073cf63c | 1567 | return do_for_each_ref(refs, prefix, fn, 0, flag, cb_data); |
03df567f MH |
1568 | } |
1569 | ||
212e0f7e | 1570 | int for_each_replace_ref(struct repository *r, each_repo_ref_fn fn, void *cb_data) |
93770590 | 1571 | { |
212e0f7e SB |
1572 | return do_for_each_repo_ref(r, git_replace_ref_base, fn, |
1573 | strlen(git_replace_ref_base), | |
1574 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); | |
93770590 DT |
1575 | } |
1576 | ||
1577 | int for_each_namespaced_ref(each_ref_fn fn, void *cb_data) | |
1578 | { | |
1579 | struct strbuf buf = STRBUF_INIT; | |
1580 | int ret; | |
1581 | strbuf_addf(&buf, "%srefs/", get_git_namespace()); | |
23a3f0cb | 1582 | ret = do_for_each_ref(get_main_ref_store(the_repository), |
7d2df051 | 1583 | buf.buf, fn, 0, 0, cb_data); |
93770590 DT |
1584 | strbuf_release(&buf); |
1585 | return ret; | |
1586 | } | |
1587 | ||
7d2df051 | 1588 | int refs_for_each_rawref(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
93770590 | 1589 | { |
7d2df051 | 1590 | return do_for_each_ref(refs, "", fn, 0, |
93770590 DT |
1591 | DO_FOR_EACH_INCLUDE_BROKEN, cb_data); |
1592 | } | |
2d0663b2 | 1593 | |
7d2df051 NTND |
1594 | int for_each_rawref(each_ref_fn fn, void *cb_data) |
1595 | { | |
23a3f0cb | 1596 | return refs_for_each_rawref(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 NTND |
1597 | } |
1598 | ||
470be518 | 1599 | int refs_read_raw_ref(struct ref_store *ref_store, |
99afe91a | 1600 | const char *refname, struct object_id *oid, |
470be518 MH |
1601 | struct strbuf *referent, unsigned int *type) |
1602 | { | |
99afe91a | 1603 | return ref_store->be->read_raw_ref(ref_store, refname, oid, referent, type); |
470be518 MH |
1604 | } |
1605 | ||
2d0663b2 | 1606 | /* This function needs to return a meaningful errno on failure */ |
7d2df051 | 1607 | const char *refs_resolve_ref_unsafe(struct ref_store *refs, |
3c0cb0cb MH |
1608 | const char *refname, |
1609 | int resolve_flags, | |
49e61479 | 1610 | struct object_id *oid, int *flags) |
2d0663b2 DT |
1611 | { |
1612 | static struct strbuf sb_refname = STRBUF_INIT; | |
54fad661 | 1613 | struct object_id unused_oid; |
2d0663b2 DT |
1614 | int unused_flags; |
1615 | int symref_count; | |
1616 | ||
49e61479 | 1617 | if (!oid) |
1618 | oid = &unused_oid; | |
2d0663b2 DT |
1619 | if (!flags) |
1620 | flags = &unused_flags; | |
1621 | ||
1622 | *flags = 0; | |
1623 | ||
1624 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1625 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1626 | !refname_is_safe(refname)) { | |
1627 | errno = EINVAL; | |
1628 | return NULL; | |
1629 | } | |
1630 | ||
1631 | /* | |
1632 | * dwim_ref() uses REF_ISBROKEN to distinguish between | |
1633 | * missing refs and refs that were present but invalid, | |
1634 | * to complain about the latter to stderr. | |
1635 | * | |
1636 | * We don't know whether the ref exists, so don't set | |
1637 | * REF_ISBROKEN yet. | |
1638 | */ | |
1639 | *flags |= REF_BAD_NAME; | |
1640 | } | |
1641 | ||
1642 | for (symref_count = 0; symref_count < SYMREF_MAXDEPTH; symref_count++) { | |
1643 | unsigned int read_flags = 0; | |
1644 | ||
470be518 | 1645 | if (refs_read_raw_ref(refs, refname, |
99afe91a | 1646 | oid, &sb_refname, &read_flags)) { |
2d0663b2 | 1647 | *flags |= read_flags; |
a1c1d817 JK |
1648 | |
1649 | /* In reading mode, refs must eventually resolve */ | |
1650 | if (resolve_flags & RESOLVE_REF_READING) | |
1651 | return NULL; | |
1652 | ||
1653 | /* | |
1654 | * Otherwise a missing ref is OK. But the files backend | |
1655 | * may show errors besides ENOENT if there are | |
1656 | * similarly-named refs. | |
1657 | */ | |
1658 | if (errno != ENOENT && | |
1659 | errno != EISDIR && | |
1660 | errno != ENOTDIR) | |
2d0663b2 | 1661 | return NULL; |
a1c1d817 | 1662 | |
49e61479 | 1663 | oidclr(oid); |
2d0663b2 DT |
1664 | if (*flags & REF_BAD_NAME) |
1665 | *flags |= REF_ISBROKEN; | |
1666 | return refname; | |
1667 | } | |
1668 | ||
1669 | *flags |= read_flags; | |
1670 | ||
1671 | if (!(read_flags & REF_ISSYMREF)) { | |
1672 | if (*flags & REF_BAD_NAME) { | |
49e61479 | 1673 | oidclr(oid); |
2d0663b2 DT |
1674 | *flags |= REF_ISBROKEN; |
1675 | } | |
1676 | return refname; | |
1677 | } | |
1678 | ||
1679 | refname = sb_refname.buf; | |
1680 | if (resolve_flags & RESOLVE_REF_NO_RECURSE) { | |
49e61479 | 1681 | oidclr(oid); |
2d0663b2 DT |
1682 | return refname; |
1683 | } | |
1684 | if (check_refname_format(refname, REFNAME_ALLOW_ONELEVEL)) { | |
1685 | if (!(resolve_flags & RESOLVE_REF_ALLOW_BAD_NAME) || | |
1686 | !refname_is_safe(refname)) { | |
1687 | errno = EINVAL; | |
1688 | return NULL; | |
1689 | } | |
1690 | ||
1691 | *flags |= REF_ISBROKEN | REF_BAD_NAME; | |
1692 | } | |
1693 | } | |
1694 | ||
1695 | errno = ELOOP; | |
1696 | return NULL; | |
1697 | } | |
00eebe35 | 1698 | |
6fb5acfd DT |
1699 | /* backend functions */ |
1700 | int refs_init_db(struct strbuf *err) | |
1701 | { | |
23a3f0cb | 1702 | struct ref_store *refs = get_main_ref_store(the_repository); |
6fb5acfd DT |
1703 | |
1704 | return refs->be->init_db(refs, err); | |
1705 | } | |
1706 | ||
bd40dcda | 1707 | const char *resolve_ref_unsafe(const char *refname, int resolve_flags, |
49e61479 | 1708 | struct object_id *oid, int *flags) |
bd40dcda | 1709 | { |
23a3f0cb | 1710 | return refs_resolve_ref_unsafe(get_main_ref_store(the_repository), refname, |
49e61479 | 1711 | resolve_flags, oid, flags); |
bd40dcda MH |
1712 | } |
1713 | ||
a8355bb7 | 1714 | int resolve_gitlink_ref(const char *submodule, const char *refname, |
a98e6101 | 1715 | struct object_id *oid) |
424dcc76 | 1716 | { |
424dcc76 MH |
1717 | struct ref_store *refs; |
1718 | int flags; | |
1719 | ||
29babbee | 1720 | refs = get_submodule_ref_store(submodule); |
48a8475f | 1721 | |
424dcc76 MH |
1722 | if (!refs) |
1723 | return -1; | |
1724 | ||
49e61479 | 1725 | if (!refs_resolve_ref_unsafe(refs, refname, 0, oid, &flags) || |
a98e6101 | 1726 | is_null_oid(oid)) |
424dcc76 MH |
1727 | return -1; |
1728 | return 0; | |
1729 | } | |
1730 | ||
0c064d90 | 1731 | struct ref_store_hash_entry |
7d4558c4 | 1732 | { |
e2b5038d | 1733 | struct hashmap_entry ent; |
7d4558c4 MH |
1734 | |
1735 | struct ref_store *refs; | |
1736 | ||
0c064d90 NTND |
1737 | /* NUL-terminated identifier of the ref store: */ |
1738 | char name[FLEX_ARRAY]; | |
7d4558c4 MH |
1739 | }; |
1740 | ||
7663cdc8 | 1741 | static int ref_store_hash_cmp(const void *unused_cmp_data, |
939af16e EW |
1742 | const struct hashmap_entry *eptr, |
1743 | const struct hashmap_entry *entry_or_key, | |
7d4558c4 MH |
1744 | const void *keydata) |
1745 | { | |
939af16e EW |
1746 | const struct ref_store_hash_entry *e1, *e2; |
1747 | const char *name; | |
1748 | ||
1749 | e1 = container_of(eptr, const struct ref_store_hash_entry, ent); | |
1750 | e2 = container_of(entry_or_key, const struct ref_store_hash_entry, ent); | |
1751 | name = keydata ? keydata : e2->name; | |
7d4558c4 | 1752 | |
0c064d90 | 1753 | return strcmp(e1->name, name); |
7d4558c4 MH |
1754 | } |
1755 | ||
0c064d90 NTND |
1756 | static struct ref_store_hash_entry *alloc_ref_store_hash_entry( |
1757 | const char *name, struct ref_store *refs) | |
7d4558c4 | 1758 | { |
0c064d90 | 1759 | struct ref_store_hash_entry *entry; |
7d4558c4 | 1760 | |
0c064d90 | 1761 | FLEX_ALLOC_STR(entry, name, name); |
d22245a2 | 1762 | hashmap_entry_init(&entry->ent, strhash(name)); |
7d4558c4 MH |
1763 | entry->refs = refs; |
1764 | return entry; | |
1765 | } | |
1766 | ||
7d4558c4 MH |
1767 | /* A hashmap of ref_stores, stored by submodule name: */ |
1768 | static struct hashmap submodule_ref_stores; | |
00eebe35 | 1769 | |
17eff96b NTND |
1770 | /* A hashmap of ref_stores, stored by worktree id: */ |
1771 | static struct hashmap worktree_ref_stores; | |
1772 | ||
c468da4e | 1773 | /* |
0c064d90 NTND |
1774 | * Look up a ref store by name. If that ref_store hasn't been |
1775 | * registered yet, return NULL. | |
c468da4e | 1776 | */ |
0c064d90 NTND |
1777 | static struct ref_store *lookup_ref_store_map(struct hashmap *map, |
1778 | const char *name) | |
00eebe35 | 1779 | { |
0c064d90 | 1780 | struct ref_store_hash_entry *entry; |
f23a4651 | 1781 | unsigned int hash; |
00eebe35 | 1782 | |
0c064d90 | 1783 | if (!map->tablesize) |
7d4558c4 MH |
1784 | /* It's initialized on demand in register_ref_store(). */ |
1785 | return NULL; | |
620a66b9 | 1786 | |
f23a4651 EW |
1787 | hash = strhash(name); |
1788 | entry = hashmap_get_entry_from_hash(map, hash, name, | |
1789 | struct ref_store_hash_entry, ent); | |
7d4558c4 | 1790 | return entry ? entry->refs : NULL; |
00eebe35 MH |
1791 | } |
1792 | ||
c468da4e MH |
1793 | /* |
1794 | * Create, record, and return a ref_store instance for the specified | |
5d0bc90e | 1795 | * gitdir. |
c468da4e | 1796 | */ |
9e7ec634 NTND |
1797 | static struct ref_store *ref_store_init(const char *gitdir, |
1798 | unsigned int flags) | |
00eebe35 MH |
1799 | { |
1800 | const char *be_name = "files"; | |
1801 | struct ref_storage_be *be = find_ref_storage_backend(be_name); | |
ba88add5 | 1802 | struct ref_store *refs; |
00eebe35 MH |
1803 | |
1804 | if (!be) | |
033abf97 | 1805 | BUG("reference backend %s is unknown", be_name); |
00eebe35 | 1806 | |
9e7ec634 | 1807 | refs = be->init(gitdir, flags); |
ba88add5 | 1808 | return refs; |
00eebe35 MH |
1809 | } |
1810 | ||
64a74161 | 1811 | struct ref_store *get_main_ref_store(struct repository *r) |
24c8407e | 1812 | { |
02204610 JK |
1813 | if (r->refs_private) |
1814 | return r->refs_private; | |
24c8407e | 1815 | |
2dc417ab JK |
1816 | if (!r->gitdir) |
1817 | BUG("attempting to get main_ref_store outside of repository"); | |
1818 | ||
02204610 JK |
1819 | r->refs_private = ref_store_init(r->gitdir, REF_STORE_ALL_CAPS); |
1820 | return r->refs_private; | |
378dc910 NTND |
1821 | } |
1822 | ||
1823 | /* | |
0c064d90 NTND |
1824 | * Associate a ref store with a name. It is a fatal error to call this |
1825 | * function twice for the same name. | |
378dc910 | 1826 | */ |
0c064d90 NTND |
1827 | static void register_ref_store_map(struct hashmap *map, |
1828 | const char *type, | |
1829 | struct ref_store *refs, | |
1830 | const char *name) | |
378dc910 | 1831 | { |
26b455f2 EW |
1832 | struct ref_store_hash_entry *entry; |
1833 | ||
0c064d90 | 1834 | if (!map->tablesize) |
7663cdc8 | 1835 | hashmap_init(map, ref_store_hash_cmp, NULL, 0); |
378dc910 | 1836 | |
26b455f2 EW |
1837 | entry = alloc_ref_store_hash_entry(name, refs); |
1838 | if (hashmap_put(map, &entry->ent)) | |
033abf97 | 1839 | BUG("%s ref_store '%s' initialized twice", type, name); |
24c8407e NTND |
1840 | } |
1841 | ||
18d0002d | 1842 | struct ref_store *get_submodule_ref_store(const char *submodule) |
00eebe35 | 1843 | { |
126c9e05 | 1844 | struct strbuf submodule_sb = STRBUF_INIT; |
00eebe35 | 1845 | struct ref_store *refs; |
29babbee NTND |
1846 | char *to_free = NULL; |
1847 | size_t len; | |
00eebe35 | 1848 | |
82a150f2 NTND |
1849 | if (!submodule) |
1850 | return NULL; | |
1851 | ||
873ea90d NTND |
1852 | len = strlen(submodule); |
1853 | while (len && is_dir_sep(submodule[len - 1])) | |
1854 | len--; | |
1855 | if (!len) | |
1856 | return NULL; | |
00eebe35 | 1857 | |
29babbee NTND |
1858 | if (submodule[len]) |
1859 | /* We need to strip off one or more trailing slashes */ | |
1860 | submodule = to_free = xmemdupz(submodule, len); | |
00eebe35 | 1861 | |
0c064d90 | 1862 | refs = lookup_ref_store_map(&submodule_ref_stores, submodule); |
126c9e05 | 1863 | if (refs) |
2c616c17 | 1864 | goto done; |
00eebe35 | 1865 | |
126c9e05 | 1866 | strbuf_addstr(&submodule_sb, submodule); |
2c616c17 NTND |
1867 | if (!is_nonbare_repository_dir(&submodule_sb)) |
1868 | goto done; | |
00eebe35 | 1869 | |
2c616c17 NTND |
1870 | if (submodule_to_gitdir(&submodule_sb, submodule)) |
1871 | goto done; | |
00eebe35 | 1872 | |
9e7ec634 NTND |
1873 | /* assume that add_submodule_odb() has been called */ |
1874 | refs = ref_store_init(submodule_sb.buf, | |
1875 | REF_STORE_READ | REF_STORE_ODB); | |
0c064d90 NTND |
1876 | register_ref_store_map(&submodule_ref_stores, "submodule", |
1877 | refs, submodule); | |
5d0bc90e | 1878 | |
2c616c17 | 1879 | done: |
5d0bc90e | 1880 | strbuf_release(&submodule_sb); |
29babbee NTND |
1881 | free(to_free); |
1882 | ||
00eebe35 MH |
1883 | return refs; |
1884 | } | |
1885 | ||
17eff96b NTND |
1886 | struct ref_store *get_worktree_ref_store(const struct worktree *wt) |
1887 | { | |
1888 | struct ref_store *refs; | |
1889 | const char *id; | |
1890 | ||
1891 | if (wt->is_current) | |
23a3f0cb | 1892 | return get_main_ref_store(the_repository); |
17eff96b NTND |
1893 | |
1894 | id = wt->id ? wt->id : "/"; | |
1895 | refs = lookup_ref_store_map(&worktree_ref_stores, id); | |
1896 | if (refs) | |
1897 | return refs; | |
1898 | ||
1899 | if (wt->id) | |
1900 | refs = ref_store_init(git_common_path("worktrees/%s", wt->id), | |
1901 | REF_STORE_ALL_CAPS); | |
1902 | else | |
1903 | refs = ref_store_init(get_git_common_dir(), | |
1904 | REF_STORE_ALL_CAPS); | |
1905 | ||
1906 | if (refs) | |
1907 | register_ref_store_map(&worktree_ref_stores, "worktree", | |
1908 | refs, id); | |
1909 | return refs; | |
1910 | } | |
1911 | ||
620a66b9 | 1912 | void base_ref_store_init(struct ref_store *refs, |
fbfd0a29 | 1913 | const struct ref_storage_be *be) |
00eebe35 | 1914 | { |
620a66b9 | 1915 | refs->be = be; |
00eebe35 | 1916 | } |
127b42a1 RS |
1917 | |
1918 | /* backend functions */ | |
7d2df051 | 1919 | int refs_pack_refs(struct ref_store *refs, unsigned int flags) |
8231527e | 1920 | { |
8231527e MH |
1921 | return refs->be->pack_refs(refs, flags); |
1922 | } | |
1923 | ||
7d2df051 | 1924 | int refs_peel_ref(struct ref_store *refs, const char *refname, |
b420d909 | 1925 | struct object_id *oid) |
7d2df051 | 1926 | { |
ba1c052f | 1927 | int flag; |
34c290a6 | 1928 | struct object_id base; |
ba1c052f MH |
1929 | |
1930 | if (current_ref_iter && current_ref_iter->refname == refname) { | |
1931 | struct object_id peeled; | |
1932 | ||
1933 | if (ref_iterator_peel(current_ref_iter, &peeled)) | |
1934 | return -1; | |
b420d909 | 1935 | oidcpy(oid, &peeled); |
ba1c052f MH |
1936 | return 0; |
1937 | } | |
1938 | ||
1939 | if (refs_read_ref_full(refs, refname, | |
34c290a6 | 1940 | RESOLVE_REF_READING, &base, &flag)) |
ba1c052f MH |
1941 | return -1; |
1942 | ||
ac2ed0d7 | 1943 | return peel_object(&base, oid); |
8231527e MH |
1944 | } |
1945 | ||
b420d909 | 1946 | int peel_ref(const char *refname, struct object_id *oid) |
bd427cf2 | 1947 | { |
23a3f0cb | 1948 | return refs_peel_ref(get_main_ref_store(the_repository), refname, oid); |
7d2df051 | 1949 | } |
bd427cf2 | 1950 | |
7d2df051 NTND |
1951 | int refs_create_symref(struct ref_store *refs, |
1952 | const char *ref_target, | |
1953 | const char *refs_heads_master, | |
1954 | const char *logmsg) | |
1955 | { | |
1956 | return refs->be->create_symref(refs, ref_target, | |
1957 | refs_heads_master, | |
1958 | logmsg); | |
bd427cf2 MH |
1959 | } |
1960 | ||
284689ba MH |
1961 | int create_symref(const char *ref_target, const char *refs_heads_master, |
1962 | const char *logmsg) | |
1963 | { | |
23a3f0cb | 1964 | return refs_create_symref(get_main_ref_store(the_repository), ref_target, |
7d2df051 | 1965 | refs_heads_master, logmsg); |
284689ba MH |
1966 | } |
1967 | ||
2ced105c MH |
1968 | int ref_update_reject_duplicates(struct string_list *refnames, |
1969 | struct strbuf *err) | |
1970 | { | |
a552e50e | 1971 | size_t i, n = refnames->nr; |
2ced105c MH |
1972 | |
1973 | assert(err); | |
1974 | ||
8556f8d6 MH |
1975 | for (i = 1; i < n; i++) { |
1976 | int cmp = strcmp(refnames->items[i - 1].string, | |
1977 | refnames->items[i].string); | |
1978 | ||
1979 | if (!cmp) { | |
2ced105c | 1980 | strbuf_addf(err, |
661558f0 | 1981 | _("multiple updates for ref '%s' not allowed"), |
2ced105c MH |
1982 | refnames->items[i].string); |
1983 | return 1; | |
8556f8d6 | 1984 | } else if (cmp > 0) { |
033abf97 | 1985 | BUG("ref_update_reject_duplicates() received unsorted list"); |
2ced105c | 1986 | } |
8556f8d6 | 1987 | } |
2ced105c MH |
1988 | return 0; |
1989 | } | |
1990 | ||
67541597 PS |
1991 | static const char hook_not_found; |
1992 | static const char *hook; | |
1993 | ||
1994 | static int run_transaction_hook(struct ref_transaction *transaction, | |
1995 | const char *state) | |
1996 | { | |
1997 | struct child_process proc = CHILD_PROCESS_INIT; | |
1998 | struct strbuf buf = STRBUF_INIT; | |
1999 | int ret = 0, i; | |
2000 | ||
2001 | if (hook == &hook_not_found) | |
2002 | return ret; | |
2003 | if (!hook) | |
e5256c82 | 2004 | hook = xstrdup_or_null(find_hook("reference-transaction")); |
67541597 PS |
2005 | if (!hook) { |
2006 | hook = &hook_not_found; | |
2007 | return ret; | |
2008 | } | |
2009 | ||
2010 | argv_array_pushl(&proc.args, hook, state, NULL); | |
2011 | proc.in = -1; | |
2012 | proc.stdout_to_stderr = 1; | |
2013 | proc.trace2_hook_name = "reference-transaction"; | |
2014 | ||
2015 | ret = start_command(&proc); | |
2016 | if (ret) | |
2017 | return ret; | |
2018 | ||
2019 | sigchain_push(SIGPIPE, SIG_IGN); | |
2020 | ||
2021 | for (i = 0; i < transaction->nr; i++) { | |
2022 | struct ref_update *update = transaction->updates[i]; | |
2023 | ||
2024 | strbuf_reset(&buf); | |
2025 | strbuf_addf(&buf, "%s %s %s\n", | |
2026 | oid_to_hex(&update->old_oid), | |
2027 | oid_to_hex(&update->new_oid), | |
2028 | update->refname); | |
2029 | ||
2030 | if (write_in_full(proc.in, buf.buf, buf.len) < 0) { | |
2031 | if (errno != EPIPE) | |
2032 | ret = -1; | |
2033 | break; | |
2034 | } | |
2035 | } | |
2036 | ||
2037 | close(proc.in); | |
2038 | sigchain_pop(SIGPIPE); | |
2039 | strbuf_release(&buf); | |
2040 | ||
2041 | ret |= finish_command(&proc); | |
2042 | return ret; | |
2043 | } | |
2044 | ||
30173b88 MH |
2045 | int ref_transaction_prepare(struct ref_transaction *transaction, |
2046 | struct strbuf *err) | |
127b42a1 | 2047 | { |
c0fe4e8b | 2048 | struct ref_store *refs = transaction->ref_store; |
67541597 | 2049 | int ret; |
127b42a1 | 2050 | |
8d4240d3 MH |
2051 | switch (transaction->state) { |
2052 | case REF_TRANSACTION_OPEN: | |
2053 | /* Good. */ | |
2054 | break; | |
30173b88 | 2055 | case REF_TRANSACTION_PREPARED: |
033abf97 | 2056 | BUG("prepare called twice on reference transaction"); |
30173b88 | 2057 | break; |
8d4240d3 | 2058 | case REF_TRANSACTION_CLOSED: |
033abf97 | 2059 | BUG("prepare called on a closed reference transaction"); |
8d4240d3 MH |
2060 | break; |
2061 | default: | |
033abf97 | 2062 | BUG("unexpected reference transaction state"); |
8d4240d3 MH |
2063 | break; |
2064 | } | |
2065 | ||
d8f4481c JK |
2066 | if (getenv(GIT_QUARANTINE_ENVIRONMENT)) { |
2067 | strbuf_addstr(err, | |
2068 | _("ref updates forbidden inside quarantine environment")); | |
2069 | return -1; | |
2070 | } | |
2071 | ||
67541597 PS |
2072 | ret = refs->be->transaction_prepare(refs, transaction, err); |
2073 | if (ret) | |
2074 | return ret; | |
2075 | ||
2076 | ret = run_transaction_hook(transaction, "prepared"); | |
2077 | if (ret) { | |
2078 | ref_transaction_abort(transaction, err); | |
2079 | die(_("ref updates aborted by hook")); | |
2080 | } | |
2081 | ||
2082 | return 0; | |
30173b88 MH |
2083 | } |
2084 | ||
2085 | int ref_transaction_abort(struct ref_transaction *transaction, | |
2086 | struct strbuf *err) | |
2087 | { | |
2088 | struct ref_store *refs = transaction->ref_store; | |
2089 | int ret = 0; | |
2090 | ||
2091 | switch (transaction->state) { | |
2092 | case REF_TRANSACTION_OPEN: | |
2093 | /* No need to abort explicitly. */ | |
2094 | break; | |
2095 | case REF_TRANSACTION_PREPARED: | |
2096 | ret = refs->be->transaction_abort(refs, transaction, err); | |
2097 | break; | |
2098 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2099 | BUG("abort called on a closed reference transaction"); |
30173b88 MH |
2100 | break; |
2101 | default: | |
033abf97 | 2102 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2103 | break; |
2104 | } | |
2105 | ||
67541597 PS |
2106 | run_transaction_hook(transaction, "aborted"); |
2107 | ||
30173b88 MH |
2108 | ref_transaction_free(transaction); |
2109 | return ret; | |
2110 | } | |
2111 | ||
2112 | int ref_transaction_commit(struct ref_transaction *transaction, | |
2113 | struct strbuf *err) | |
2114 | { | |
2115 | struct ref_store *refs = transaction->ref_store; | |
2116 | int ret; | |
2117 | ||
2118 | switch (transaction->state) { | |
2119 | case REF_TRANSACTION_OPEN: | |
2120 | /* Need to prepare first. */ | |
2121 | ret = ref_transaction_prepare(transaction, err); | |
2122 | if (ret) | |
2123 | return ret; | |
2124 | break; | |
2125 | case REF_TRANSACTION_PREPARED: | |
2126 | /* Fall through to finish. */ | |
2127 | break; | |
2128 | case REF_TRANSACTION_CLOSED: | |
033abf97 | 2129 | BUG("commit called on a closed reference transaction"); |
30173b88 MH |
2130 | break; |
2131 | default: | |
033abf97 | 2132 | BUG("unexpected reference transaction state"); |
30173b88 MH |
2133 | break; |
2134 | } | |
2135 | ||
67541597 PS |
2136 | ret = refs->be->transaction_finish(refs, transaction, err); |
2137 | if (!ret) | |
2138 | run_transaction_hook(transaction, "committed"); | |
2139 | return ret; | |
127b42a1 | 2140 | } |
62665823 | 2141 | |
7d2df051 NTND |
2142 | int refs_verify_refname_available(struct ref_store *refs, |
2143 | const char *refname, | |
b05855b5 | 2144 | const struct string_list *extras, |
7d2df051 NTND |
2145 | const struct string_list *skip, |
2146 | struct strbuf *err) | |
62665823 | 2147 | { |
b05855b5 MH |
2148 | const char *slash; |
2149 | const char *extra_refname; | |
2150 | struct strbuf dirname = STRBUF_INIT; | |
2151 | struct strbuf referent = STRBUF_INIT; | |
2152 | struct object_id oid; | |
2153 | unsigned int type; | |
2154 | struct ref_iterator *iter; | |
2155 | int ok; | |
2156 | int ret = -1; | |
2157 | ||
2158 | /* | |
2159 | * For the sake of comments in this function, suppose that | |
2160 | * refname is "refs/foo/bar". | |
2161 | */ | |
2162 | ||
2163 | assert(err); | |
2164 | ||
2165 | strbuf_grow(&dirname, strlen(refname) + 1); | |
2166 | for (slash = strchr(refname, '/'); slash; slash = strchr(slash + 1, '/')) { | |
2167 | /* Expand dirname to the new prefix, not including the trailing slash: */ | |
2168 | strbuf_add(&dirname, refname + dirname.len, slash - refname - dirname.len); | |
2169 | ||
2170 | /* | |
2171 | * We are still at a leading dir of the refname (e.g., | |
2172 | * "refs/foo"; if there is a reference with that name, | |
2173 | * it is a conflict, *unless* it is in skip. | |
2174 | */ | |
2175 | if (skip && string_list_has_string(skip, dirname.buf)) | |
2176 | continue; | |
2177 | ||
99afe91a | 2178 | if (!refs_read_raw_ref(refs, dirname.buf, &oid, &referent, &type)) { |
661558f0 | 2179 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2180 | dirname.buf, refname); |
2181 | goto cleanup; | |
2182 | } | |
2183 | ||
2184 | if (extras && string_list_has_string(extras, dirname.buf)) { | |
661558f0 | 2185 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2186 | refname, dirname.buf); |
2187 | goto cleanup; | |
2188 | } | |
2189 | } | |
2190 | ||
2191 | /* | |
2192 | * We are at the leaf of our refname (e.g., "refs/foo/bar"). | |
2193 | * There is no point in searching for a reference with that | |
2194 | * name, because a refname isn't considered to conflict with | |
2195 | * itself. But we still need to check for references whose | |
2196 | * names are in the "refs/foo/bar/" namespace, because they | |
2197 | * *do* conflict. | |
2198 | */ | |
2199 | strbuf_addstr(&dirname, refname + dirname.len); | |
2200 | strbuf_addch(&dirname, '/'); | |
2201 | ||
2202 | iter = refs_ref_iterator_begin(refs, dirname.buf, 0, | |
2203 | DO_FOR_EACH_INCLUDE_BROKEN); | |
2204 | while ((ok = ref_iterator_advance(iter)) == ITER_OK) { | |
2205 | if (skip && | |
2206 | string_list_has_string(skip, iter->refname)) | |
2207 | continue; | |
2208 | ||
661558f0 | 2209 | strbuf_addf(err, _("'%s' exists; cannot create '%s'"), |
b05855b5 MH |
2210 | iter->refname, refname); |
2211 | ref_iterator_abort(iter); | |
2212 | goto cleanup; | |
2213 | } | |
2214 | ||
2215 | if (ok != ITER_DONE) | |
033abf97 | 2216 | BUG("error while iterating over references"); |
b05855b5 MH |
2217 | |
2218 | extra_refname = find_descendant_ref(dirname.buf, extras, skip); | |
2219 | if (extra_refname) | |
661558f0 | 2220 | strbuf_addf(err, _("cannot process '%s' and '%s' at the same time"), |
b05855b5 MH |
2221 | refname, extra_refname); |
2222 | else | |
2223 | ret = 0; | |
2224 | ||
2225 | cleanup: | |
2226 | strbuf_release(&referent); | |
2227 | strbuf_release(&dirname); | |
2228 | return ret; | |
62665823 | 2229 | } |
e3688bd6 | 2230 | |
7d2df051 | 2231 | int refs_for_each_reflog(struct ref_store *refs, each_ref_fn fn, void *cb_data) |
e3688bd6 | 2232 | { |
e3688bd6 | 2233 | struct ref_iterator *iter; |
4a6067cd | 2234 | struct do_for_each_ref_help hp = { fn, cb_data }; |
e3688bd6 DT |
2235 | |
2236 | iter = refs->be->reflog_iterator_begin(refs); | |
2237 | ||
4a6067cd SB |
2238 | return do_for_each_repo_ref_iterator(the_repository, iter, |
2239 | do_for_each_ref_helper, &hp); | |
e3688bd6 DT |
2240 | } |
2241 | ||
7d2df051 | 2242 | int for_each_reflog(each_ref_fn fn, void *cb_data) |
e3688bd6 | 2243 | { |
23a3f0cb | 2244 | return refs_for_each_reflog(get_main_ref_store(the_repository), fn, cb_data); |
7d2df051 | 2245 | } |
e3688bd6 | 2246 | |
7d2df051 NTND |
2247 | int refs_for_each_reflog_ent_reverse(struct ref_store *refs, |
2248 | const char *refname, | |
2249 | each_reflog_ent_fn fn, | |
2250 | void *cb_data) | |
2251 | { | |
e3688bd6 DT |
2252 | return refs->be->for_each_reflog_ent_reverse(refs, refname, |
2253 | fn, cb_data); | |
2254 | } | |
2255 | ||
7d2df051 NTND |
2256 | int for_each_reflog_ent_reverse(const char *refname, each_reflog_ent_fn fn, |
2257 | void *cb_data) | |
2258 | { | |
23a3f0cb | 2259 | return refs_for_each_reflog_ent_reverse(get_main_ref_store(the_repository), |
7d2df051 NTND |
2260 | refname, fn, cb_data); |
2261 | } | |
2262 | ||
2263 | int refs_for_each_reflog_ent(struct ref_store *refs, const char *refname, | |
2264 | each_reflog_ent_fn fn, void *cb_data) | |
2265 | { | |
2266 | return refs->be->for_each_reflog_ent(refs, refname, fn, cb_data); | |
2267 | } | |
2268 | ||
e3688bd6 DT |
2269 | int for_each_reflog_ent(const char *refname, each_reflog_ent_fn fn, |
2270 | void *cb_data) | |
2271 | { | |
23a3f0cb | 2272 | return refs_for_each_reflog_ent(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2273 | fn, cb_data); |
2274 | } | |
e3688bd6 | 2275 | |
7d2df051 NTND |
2276 | int refs_reflog_exists(struct ref_store *refs, const char *refname) |
2277 | { | |
2278 | return refs->be->reflog_exists(refs, refname); | |
e3688bd6 DT |
2279 | } |
2280 | ||
2281 | int reflog_exists(const char *refname) | |
2282 | { | |
23a3f0cb | 2283 | return refs_reflog_exists(get_main_ref_store(the_repository), refname); |
7d2df051 | 2284 | } |
e3688bd6 | 2285 | |
7d2df051 NTND |
2286 | int refs_create_reflog(struct ref_store *refs, const char *refname, |
2287 | int force_create, struct strbuf *err) | |
2288 | { | |
2289 | return refs->be->create_reflog(refs, refname, force_create, err); | |
e3688bd6 DT |
2290 | } |
2291 | ||
2292 | int safe_create_reflog(const char *refname, int force_create, | |
2293 | struct strbuf *err) | |
2294 | { | |
23a3f0cb | 2295 | return refs_create_reflog(get_main_ref_store(the_repository), refname, |
7d2df051 NTND |
2296 | force_create, err); |
2297 | } | |
e3688bd6 | 2298 | |
7d2df051 NTND |
2299 | int refs_delete_reflog(struct ref_store *refs, const char *refname) |
2300 | { | |
2301 | return refs->be->delete_reflog(refs, refname); | |
e3688bd6 DT |
2302 | } |
2303 | ||
2304 | int delete_reflog(const char *refname) | |
2305 | { | |
23a3f0cb | 2306 | return refs_delete_reflog(get_main_ref_store(the_repository), refname); |
7d2df051 | 2307 | } |
e3688bd6 | 2308 | |
7d2df051 | 2309 | int refs_reflog_expire(struct ref_store *refs, |
0155f710 | 2310 | const char *refname, const struct object_id *oid, |
7d2df051 NTND |
2311 | unsigned int flags, |
2312 | reflog_expiry_prepare_fn prepare_fn, | |
2313 | reflog_expiry_should_prune_fn should_prune_fn, | |
2314 | reflog_expiry_cleanup_fn cleanup_fn, | |
2315 | void *policy_cb_data) | |
2316 | { | |
0155f710 | 2317 | return refs->be->reflog_expire(refs, refname, oid, flags, |
7d2df051 NTND |
2318 | prepare_fn, should_prune_fn, |
2319 | cleanup_fn, policy_cb_data); | |
e3688bd6 DT |
2320 | } |
2321 | ||
0155f710 | 2322 | int reflog_expire(const char *refname, const struct object_id *oid, |
e3688bd6 DT |
2323 | unsigned int flags, |
2324 | reflog_expiry_prepare_fn prepare_fn, | |
2325 | reflog_expiry_should_prune_fn should_prune_fn, | |
2326 | reflog_expiry_cleanup_fn cleanup_fn, | |
2327 | void *policy_cb_data) | |
2328 | { | |
23a3f0cb | 2329 | return refs_reflog_expire(get_main_ref_store(the_repository), |
0155f710 | 2330 | refname, oid, flags, |
7d2df051 NTND |
2331 | prepare_fn, should_prune_fn, |
2332 | cleanup_fn, policy_cb_data); | |
e3688bd6 | 2333 | } |
fc681463 DT |
2334 | |
2335 | int initial_ref_transaction_commit(struct ref_transaction *transaction, | |
2336 | struct strbuf *err) | |
2337 | { | |
c0fe4e8b | 2338 | struct ref_store *refs = transaction->ref_store; |
fc681463 DT |
2339 | |
2340 | return refs->be->initial_transaction_commit(refs, transaction, err); | |
2341 | } | |
a27dcf89 | 2342 | |
64da4199 MH |
2343 | int refs_delete_refs(struct ref_store *refs, const char *msg, |
2344 | struct string_list *refnames, unsigned int flags) | |
a27dcf89 | 2345 | { |
64da4199 | 2346 | return refs->be->delete_refs(refs, msg, refnames, flags); |
a27dcf89 | 2347 | } |
9b6b40d9 | 2348 | |
64da4199 MH |
2349 | int delete_refs(const char *msg, struct string_list *refnames, |
2350 | unsigned int flags) | |
9b6b40d9 | 2351 | { |
23a3f0cb | 2352 | return refs_delete_refs(get_main_ref_store(the_repository), msg, refnames, flags); |
7d2df051 | 2353 | } |
9b6b40d9 | 2354 | |
7d2df051 NTND |
2355 | int refs_rename_ref(struct ref_store *refs, const char *oldref, |
2356 | const char *newref, const char *logmsg) | |
2357 | { | |
9b6b40d9 DT |
2358 | return refs->be->rename_ref(refs, oldref, newref, logmsg); |
2359 | } | |
7d2df051 NTND |
2360 | |
2361 | int rename_ref(const char *oldref, const char *newref, const char *logmsg) | |
2362 | { | |
23a3f0cb | 2363 | return refs_rename_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
7d2df051 | 2364 | } |
52d59cc6 SD |
2365 | |
2366 | int refs_copy_existing_ref(struct ref_store *refs, const char *oldref, | |
2367 | const char *newref, const char *logmsg) | |
2368 | { | |
2369 | return refs->be->copy_ref(refs, oldref, newref, logmsg); | |
2370 | } | |
2371 | ||
2372 | int copy_existing_ref(const char *oldref, const char *newref, const char *logmsg) | |
2373 | { | |
23a3f0cb | 2374 | return refs_copy_existing_ref(get_main_ref_store(the_repository), oldref, newref, logmsg); |
52d59cc6 | 2375 | } |