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16da134b | 1 | #include "cache.h" |
dbbcd44f | 2 | #include "strvec.h" |
33028713 | 3 | #include "repository.h" |
b2141fc1 | 4 | #include "config.h" |
f8a9d428 | 5 | #include "dir.h" |
16da134b JS |
6 | #include "tree.h" |
7 | #include "tree-walk.h" | |
076b0adc | 8 | #include "cache-tree.h" |
16da134b | 9 | #include "unpack-trees.h" |
96a02f8f | 10 | #include "progress.h" |
0cf73755 | 11 | #include "refs.h" |
06f33c17 | 12 | #include "attr.h" |
5fc2fc8f | 13 | #include "split-index.h" |
a7bc845a SB |
14 | #include "submodule.h" |
15 | #include "submodule-config.h" | |
883e248b | 16 | #include "fsmonitor.h" |
cbd53a21 | 17 | #include "object-store.h" |
b14ed5ad | 18 | #include "promisor-remote.h" |
d052cc03 | 19 | #include "entry.h" |
04155bda | 20 | #include "parallel-checkout.h" |
16da134b | 21 | |
8ccba008 JH |
22 | /* |
23 | * Error messages expected by scripts out of plumbing commands such as | |
24 | * read-tree. Non-scripted Porcelain is not required to use these messages | |
25 | * and in fact are encouraged to reword them to better suit their particular | |
23cbf11b | 26 | * situation better. See how "git checkout" and "git merge" replaces |
dc1166e6 | 27 | * them using setup_unpack_trees_porcelain(), for example. |
8ccba008 | 28 | */ |
6271d77c | 29 | static const char *unpack_plumbing_errors[NB_UNPACK_TREES_WARNING_TYPES] = { |
08353ebb | 30 | /* ERROR_WOULD_OVERWRITE */ |
8ccba008 JH |
31 | "Entry '%s' would be overwritten by merge. Cannot merge.", |
32 | ||
08353ebb | 33 | /* ERROR_NOT_UPTODATE_FILE */ |
8ccba008 JH |
34 | "Entry '%s' not uptodate. Cannot merge.", |
35 | ||
08353ebb | 36 | /* ERROR_NOT_UPTODATE_DIR */ |
8ccba008 JH |
37 | "Updating '%s' would lose untracked files in it", |
38 | ||
08402b04 MM |
39 | /* ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN */ |
40 | "Untracked working tree file '%s' would be overwritten by merge.", | |
8ccba008 | 41 | |
08402b04 MM |
42 | /* ERROR_WOULD_LOSE_UNTRACKED_REMOVED */ |
43 | "Untracked working tree file '%s' would be removed by merge.", | |
8ccba008 | 44 | |
08353ebb | 45 | /* ERROR_BIND_OVERLAP */ |
8ccba008 | 46 | "Entry '%s' overlaps with '%s'. Cannot bind.", |
e800ec9d | 47 | |
cd002c15 EN |
48 | /* ERROR_WOULD_LOSE_SUBMODULE */ |
49 | "Submodule '%s' cannot checkout new HEAD.", | |
e800ec9d | 50 | |
6271d77c EN |
51 | /* NB_UNPACK_TREES_ERROR_TYPES; just a meta value */ |
52 | "", | |
08402b04 | 53 | |
1ac83f42 | 54 | /* WARNING_SPARSE_NOT_UPTODATE_FILE */ |
22ab0b37 | 55 | "Path '%s' not uptodate; will not remove from working tree.", |
a7bc845a | 56 | |
ebb568b9 EN |
57 | /* WARNING_SPARSE_UNMERGED_FILE */ |
58 | "Path '%s' unmerged; will not remove from working tree.", | |
59 | ||
1ac83f42 | 60 | /* WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN */ |
22ab0b37 | 61 | "Path '%s' already present; will not overwrite with sparse update.", |
8ccba008 JH |
62 | }; |
63 | ||
08353ebb MM |
64 | #define ERRORMSG(o,type) \ |
65 | ( ((o) && (o)->msgs[(type)]) \ | |
66 | ? ((o)->msgs[(type)]) \ | |
67 | : (unpack_plumbing_errors[(type)]) ) | |
8ccba008 | 68 | |
3d415425 SB |
69 | static const char *super_prefixed(const char *path) |
70 | { | |
71 | /* | |
72 | * It is necessary and sufficient to have two static buffers | |
73 | * here, as the return value of this function is fed to | |
74 | * error() using the unpack_*_errors[] templates we see above. | |
75 | */ | |
76 | static struct strbuf buf[2] = {STRBUF_INIT, STRBUF_INIT}; | |
77 | static int super_prefix_len = -1; | |
78 | static unsigned idx = ARRAY_SIZE(buf) - 1; | |
79 | ||
80 | if (super_prefix_len < 0) { | |
81 | const char *super_prefix = get_super_prefix(); | |
82 | if (!super_prefix) { | |
83 | super_prefix_len = 0; | |
84 | } else { | |
85 | int i; | |
86 | for (i = 0; i < ARRAY_SIZE(buf); i++) | |
87 | strbuf_addstr(&buf[i], super_prefix); | |
88 | super_prefix_len = buf[0].len; | |
89 | } | |
90 | } | |
91 | ||
92 | if (!super_prefix_len) | |
93 | return path; | |
94 | ||
95 | if (++idx >= ARRAY_SIZE(buf)) | |
96 | idx = 0; | |
97 | ||
98 | strbuf_setlen(&buf[idx], super_prefix_len); | |
99 | strbuf_addstr(&buf[idx], path); | |
100 | ||
101 | return buf[idx].buf; | |
102 | } | |
103 | ||
e294030f MM |
104 | void setup_unpack_trees_porcelain(struct unpack_trees_options *opts, |
105 | const char *cmd) | |
dc1166e6 | 106 | { |
7980872d | 107 | int i; |
e294030f | 108 | const char **msgs = opts->msgs; |
dc1166e6 | 109 | const char *msg; |
fa3f60b7 | 110 | |
c972bf4c | 111 | strvec_init(&opts->msgs_to_free); |
1c41d280 | 112 | |
2e3926b9 | 113 | if (!strcmp(cmd, "checkout")) |
ed9bff08 | 114 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 115 | ? _("Your local changes to the following files would be overwritten by checkout:\n%%s" |
c2691e2a | 116 | "Please commit your changes or stash them before you switch branches.") |
2e3926b9 VA |
117 | : _("Your local changes to the following files would be overwritten by checkout:\n%%s"); |
118 | else if (!strcmp(cmd, "merge")) | |
ed9bff08 | 119 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 120 | ? _("Your local changes to the following files would be overwritten by merge:\n%%s" |
c2691e2a | 121 | "Please commit your changes or stash them before you merge.") |
2e3926b9 | 122 | : _("Your local changes to the following files would be overwritten by merge:\n%%s"); |
dc1166e6 | 123 | else |
ed9bff08 | 124 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 125 | ? _("Your local changes to the following files would be overwritten by %s:\n%%s" |
c2691e2a | 126 | "Please commit your changes or stash them before you %s.") |
2e3926b9 | 127 | : _("Your local changes to the following files would be overwritten by %s:\n%%s"); |
fa3f60b7 | 128 | msgs[ERROR_WOULD_OVERWRITE] = msgs[ERROR_NOT_UPTODATE_FILE] = |
c972bf4c | 129 | strvec_pushf(&opts->msgs_to_free, msg, cmd, cmd); |
dc1166e6 MM |
130 | |
131 | msgs[ERROR_NOT_UPTODATE_DIR] = | |
584f99c8 | 132 | _("Updating the following directories would lose untracked files in them:\n%s"); |
dc1166e6 | 133 | |
2e3926b9 | 134 | if (!strcmp(cmd, "checkout")) |
ed9bff08 | 135 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 136 | ? _("The following untracked working tree files would be removed by checkout:\n%%s" |
c2691e2a | 137 | "Please move or remove them before you switch branches.") |
2e3926b9 VA |
138 | : _("The following untracked working tree files would be removed by checkout:\n%%s"); |
139 | else if (!strcmp(cmd, "merge")) | |
ed9bff08 | 140 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 141 | ? _("The following untracked working tree files would be removed by merge:\n%%s" |
c2691e2a | 142 | "Please move or remove them before you merge.") |
2e3926b9 | 143 | : _("The following untracked working tree files would be removed by merge:\n%%s"); |
dc1166e6 | 144 | else |
ed9bff08 | 145 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 146 | ? _("The following untracked working tree files would be removed by %s:\n%%s" |
c2691e2a | 147 | "Please move or remove them before you %s.") |
2e3926b9 | 148 | : _("The following untracked working tree files would be removed by %s:\n%%s"); |
1c41d280 | 149 | msgs[ERROR_WOULD_LOSE_UNTRACKED_REMOVED] = |
c972bf4c | 150 | strvec_pushf(&opts->msgs_to_free, msg, cmd, cmd); |
2e3926b9 VA |
151 | |
152 | if (!strcmp(cmd, "checkout")) | |
ed9bff08 | 153 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 154 | ? _("The following untracked working tree files would be overwritten by checkout:\n%%s" |
c2691e2a | 155 | "Please move or remove them before you switch branches.") |
2e3926b9 VA |
156 | : _("The following untracked working tree files would be overwritten by checkout:\n%%s"); |
157 | else if (!strcmp(cmd, "merge")) | |
ed9bff08 | 158 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 159 | ? _("The following untracked working tree files would be overwritten by merge:\n%%s" |
c2691e2a | 160 | "Please move or remove them before you merge.") |
2e3926b9 VA |
161 | : _("The following untracked working tree files would be overwritten by merge:\n%%s"); |
162 | else | |
ed9bff08 | 163 | msg = advice_enabled(ADVICE_COMMIT_BEFORE_MERGE) |
2e3926b9 | 164 | ? _("The following untracked working tree files would be overwritten by %s:\n%%s" |
c2691e2a | 165 | "Please move or remove them before you %s.") |
2e3926b9 | 166 | : _("The following untracked working tree files would be overwritten by %s:\n%%s"); |
1c41d280 | 167 | msgs[ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN] = |
c972bf4c | 168 | strvec_pushf(&opts->msgs_to_free, msg, cmd, cmd); |
dc1166e6 MM |
169 | |
170 | /* | |
171 | * Special case: ERROR_BIND_OVERLAP refers to a pair of paths, we | |
172 | * cannot easily display it as a list. | |
173 | */ | |
ed47fdf7 | 174 | msgs[ERROR_BIND_OVERLAP] = _("Entry '%s' overlaps with '%s'. Cannot bind."); |
dc1166e6 | 175 | |
a7bc845a | 176 | msgs[ERROR_WOULD_LOSE_SUBMODULE] = |
6362ed0b | 177 | _("Cannot update submodule:\n%s"); |
5e65ee35 | 178 | |
1ac83f42 | 179 | msgs[WARNING_SPARSE_NOT_UPTODATE_FILE] = |
22ab0b37 | 180 | _("The following paths are not up to date and were left despite sparse patterns:\n%s"); |
ebb568b9 EN |
181 | msgs[WARNING_SPARSE_UNMERGED_FILE] = |
182 | _("The following paths are unmerged and were left despite sparse patterns:\n%s"); | |
1ac83f42 | 183 | msgs[WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN] = |
22ab0b37 | 184 | _("The following paths were already present and thus not updated despite sparse patterns:\n%s"); |
5e65ee35 MM |
185 | |
186 | opts->show_all_errors = 1; | |
7980872d CB |
187 | /* rejected paths may not have a static buffer */ |
188 | for (i = 0; i < ARRAY_SIZE(opts->unpack_rejects); i++) | |
189 | opts->unpack_rejects[i].strdup_strings = 1; | |
dc1166e6 MM |
190 | } |
191 | ||
1c41d280 MÅ |
192 | void clear_unpack_trees_porcelain(struct unpack_trees_options *opts) |
193 | { | |
c972bf4c | 194 | strvec_clear(&opts->msgs_to_free); |
1c41d280 MÅ |
195 | memset(opts->msgs, 0, sizeof(opts->msgs)); |
196 | } | |
197 | ||
46169180 | 198 | static int do_add_entry(struct unpack_trees_options *o, struct cache_entry *ce, |
6ff264ee | 199 | unsigned int set, unsigned int clear) |
b48d5a05 | 200 | { |
419a597f | 201 | clear |= CE_HASHED; |
34110cd4 | 202 | |
700e66d6 NTND |
203 | if (set & CE_REMOVE) |
204 | set |= CE_WT_REMOVE; | |
205 | ||
6ff264ee | 206 | ce->ce_flags = (ce->ce_flags & ~clear) | set; |
46169180 JK |
207 | return add_index_entry(&o->result, ce, |
208 | ADD_CACHE_OK_TO_ADD | ADD_CACHE_OK_TO_REPLACE); | |
6ff264ee RS |
209 | } |
210 | ||
a33bd4d3 RS |
211 | static void add_entry(struct unpack_trees_options *o, |
212 | const struct cache_entry *ce, | |
213 | unsigned int set, unsigned int clear) | |
214 | { | |
8e72d675 | 215 | do_add_entry(o, dup_cache_entry(ce, &o->result), set, clear); |
b48d5a05 LT |
216 | } |
217 | ||
e6c111b4 MM |
218 | /* |
219 | * add error messages on path <path> | |
220 | * corresponding to the type <e> with the message <msg> | |
221 | * indicating if it should be display in porcelain or not | |
222 | */ | |
223 | static int add_rejected_path(struct unpack_trees_options *o, | |
224 | enum unpack_trees_error_types e, | |
225 | const char *path) | |
226 | { | |
b165fac8 | 227 | if (o->quiet) |
191e9d2c NTND |
228 | return -1; |
229 | ||
e6c111b4 | 230 | if (!o->show_all_errors) |
3d415425 | 231 | return error(ERRORMSG(o, e), super_prefixed(path)); |
e6c111b4 MM |
232 | |
233 | /* | |
234 | * Otherwise, insert in a list for future display by | |
6271d77c | 235 | * display_(error|warning)_msgs() |
e6c111b4 | 236 | */ |
7980872d | 237 | string_list_append(&o->unpack_rejects[e], path); |
e6c111b4 MM |
238 | return -1; |
239 | } | |
240 | ||
e6c111b4 MM |
241 | /* |
242 | * display all the error messages stored in a nice way | |
243 | */ | |
244 | static void display_error_msgs(struct unpack_trees_options *o) | |
245 | { | |
6271d77c EN |
246 | int e; |
247 | unsigned error_displayed = 0; | |
e6c111b4 | 248 | for (e = 0; e < NB_UNPACK_TREES_ERROR_TYPES; e++) { |
7980872d | 249 | struct string_list *rejects = &o->unpack_rejects[e]; |
6271d77c | 250 | |
7980872d | 251 | if (rejects->nr > 0) { |
6271d77c | 252 | int i; |
e6c111b4 | 253 | struct strbuf path = STRBUF_INIT; |
6271d77c EN |
254 | |
255 | error_displayed = 1; | |
7980872d CB |
256 | for (i = 0; i < rejects->nr; i++) |
257 | strbuf_addf(&path, "\t%s\n", rejects->items[i].string); | |
3d415425 | 258 | error(ERRORMSG(o, e), super_prefixed(path.buf)); |
e6c111b4 | 259 | strbuf_release(&path); |
e6c111b4 | 260 | } |
7980872d | 261 | string_list_clear(rejects, 0); |
e6c111b4 | 262 | } |
6271d77c | 263 | if (error_displayed) |
ed47fdf7 | 264 | fprintf(stderr, _("Aborting\n")); |
e6c111b4 MM |
265 | } |
266 | ||
6271d77c EN |
267 | /* |
268 | * display all the warning messages stored in a nice way | |
269 | */ | |
270 | static void display_warning_msgs(struct unpack_trees_options *o) | |
271 | { | |
272 | int e; | |
273 | unsigned warning_displayed = 0; | |
274 | for (e = NB_UNPACK_TREES_ERROR_TYPES + 1; | |
275 | e < NB_UNPACK_TREES_WARNING_TYPES; e++) { | |
276 | struct string_list *rejects = &o->unpack_rejects[e]; | |
277 | ||
278 | if (rejects->nr > 0) { | |
279 | int i; | |
280 | struct strbuf path = STRBUF_INIT; | |
281 | ||
282 | warning_displayed = 1; | |
283 | for (i = 0; i < rejects->nr; i++) | |
284 | strbuf_addf(&path, "\t%s\n", rejects->items[i].string); | |
285 | warning(ERRORMSG(o, e), super_prefixed(path.buf)); | |
286 | strbuf_release(&path); | |
287 | } | |
288 | string_list_clear(rejects, 0); | |
289 | } | |
290 | if (warning_displayed) | |
291 | fprintf(stderr, _("After fixing the above paths, you may want to run `git sparse-checkout reapply`.\n")); | |
292 | } | |
a7bc845a SB |
293 | static int check_submodule_move_head(const struct cache_entry *ce, |
294 | const char *old_id, | |
295 | const char *new_id, | |
296 | struct unpack_trees_options *o) | |
297 | { | |
cd279e2e | 298 | unsigned flags = SUBMODULE_MOVE_HEAD_DRY_RUN; |
a7bc845a | 299 | const struct submodule *sub = submodule_from_ce(ce); |
7463e2ec | 300 | |
a7bc845a SB |
301 | if (!sub) |
302 | return 0; | |
303 | ||
cd279e2e SB |
304 | if (o->reset) |
305 | flags |= SUBMODULE_MOVE_HEAD_FORCE; | |
306 | ||
7463e2ec | 307 | if (submodule_move_head(ce->name, old_id, new_id, flags)) |
191e9d2c | 308 | return add_rejected_path(o, ERROR_WOULD_LOSE_SUBMODULE, ce->name); |
7463e2ec | 309 | return 0; |
a7bc845a SB |
310 | } |
311 | ||
33028713 | 312 | /* |
15beaaa3 | 313 | * Perform the loading of the repository's gitmodules file. This function is |
33028713 | 314 | * used by 'check_update()' to perform loading of the gitmodules file in two |
15beaaa3 | 315 | * different situations: |
33028713 BW |
316 | * (1) before removing entries from the working tree if the gitmodules file has |
317 | * been marked for removal. This situation is specified by 'state' == NULL. | |
318 | * (2) before checking out entries to the working tree if the gitmodules file | |
319 | * has been marked for update. This situation is specified by 'state' != NULL. | |
320 | */ | |
321 | static void load_gitmodules_file(struct index_state *index, | |
322 | struct checkout *state) | |
a7bc845a | 323 | { |
33028713 BW |
324 | int pos = index_name_pos(index, GITMODULES_FILE, strlen(GITMODULES_FILE)); |
325 | ||
326 | if (pos >= 0) { | |
327 | struct cache_entry *ce = index->cache[pos]; | |
328 | if (!state && ce->ce_flags & CE_WT_REMOVE) { | |
d7992421 | 329 | repo_read_gitmodules(the_repository, 0); |
33028713 | 330 | } else if (state && (ce->ce_flags & CE_UPDATE)) { |
f793b895 | 331 | submodule_free(the_repository); |
0f086e6d | 332 | checkout_entry(ce, state, NULL, NULL); |
d7992421 | 333 | repo_read_gitmodules(the_repository, 0); |
a7bc845a SB |
334 | } |
335 | } | |
336 | } | |
337 | ||
6c34239d EN |
338 | static struct progress *get_progress(struct unpack_trees_options *o, |
339 | struct index_state *index) | |
16da134b | 340 | { |
96a02f8f | 341 | unsigned cnt = 0, total = 0; |
384f1a16 SB |
342 | |
343 | if (!o->update || !o->verbose_update) | |
344 | return NULL; | |
345 | ||
346 | for (; cnt < index->cache_nr; cnt++) { | |
347 | const struct cache_entry *ce = index->cache[cnt]; | |
348 | if (ce->ce_flags & (CE_UPDATE | CE_WT_REMOVE)) | |
349 | total++; | |
350 | } | |
351 | ||
328c6cb8 | 352 | return start_delayed_progress(_("Updating files"), total); |
384f1a16 SB |
353 | } |
354 | ||
b878579a NTND |
355 | static void setup_collided_checkout_detection(struct checkout *state, |
356 | struct index_state *index) | |
357 | { | |
358 | int i; | |
359 | ||
360 | state->clone = 1; | |
361 | for (i = 0; i < index->cache_nr; i++) | |
362 | index->cache[i]->ce_flags &= ~CE_MATCHED; | |
363 | } | |
364 | ||
365 | static void report_collided_checkout(struct index_state *index) | |
366 | { | |
367 | struct string_list list = STRING_LIST_INIT_NODUP; | |
368 | int i; | |
369 | ||
370 | for (i = 0; i < index->cache_nr; i++) { | |
371 | struct cache_entry *ce = index->cache[i]; | |
372 | ||
373 | if (!(ce->ce_flags & CE_MATCHED)) | |
374 | continue; | |
375 | ||
376 | string_list_append(&list, ce->name); | |
377 | ce->ce_flags &= ~CE_MATCHED; | |
378 | } | |
379 | ||
380 | list.cmp = fspathcmp; | |
381 | string_list_sort(&list); | |
382 | ||
383 | if (list.nr) { | |
384 | warning(_("the following paths have collided (e.g. case-sensitive paths\n" | |
385 | "on a case-insensitive filesystem) and only one from the same\n" | |
386 | "colliding group is in the working tree:\n")); | |
387 | ||
388 | for (i = 0; i < list.nr; i++) | |
389 | fprintf(stderr, " '%s'\n", list.items[i].string); | |
390 | } | |
391 | ||
392 | string_list_clear(&list, 0); | |
393 | } | |
394 | ||
b2896d27 JT |
395 | static int must_checkout(const struct cache_entry *ce) |
396 | { | |
397 | return ce->ce_flags & CE_UPDATE; | |
398 | } | |
399 | ||
b0a5a12a EN |
400 | static int check_updates(struct unpack_trees_options *o, |
401 | struct index_state *index) | |
384f1a16 SB |
402 | { |
403 | unsigned cnt = 0; | |
30ac275b | 404 | int errs = 0; |
07f967ad | 405 | struct progress *progress; |
30ac275b | 406 | struct checkout state = CHECKOUT_INIT; |
7531e4b6 | 407 | int i, pc_workers, pc_threshold; |
16da134b | 408 | |
0d1ed596 | 409 | trace_performance_enter(); |
30ac275b SB |
410 | state.force = 1; |
411 | state.quiet = 1; | |
412 | state.refresh_cache = 1; | |
413 | state.istate = index; | |
13e7ed6a | 414 | clone_checkout_metadata(&state.meta, &o->meta, NULL); |
16da134b | 415 | |
26f924d5 EN |
416 | if (!o->update || o->dry_run) { |
417 | remove_marked_cache_entries(index, 0); | |
418 | trace_performance_leave("check_updates"); | |
419 | return 0; | |
420 | } | |
421 | ||
b878579a NTND |
422 | if (o->clone) |
423 | setup_collided_checkout_detection(&state, index); | |
424 | ||
6c34239d | 425 | progress = get_progress(o, index); |
16da134b | 426 | |
22539ec3 MT |
427 | /* Start with clean cache to avoid using any possibly outdated info. */ |
428 | invalidate_lstat_cache(); | |
429 | ||
26f924d5 | 430 | git_attr_set_direction(GIT_ATTR_CHECKOUT); |
33028713 | 431 | |
26f924d5 | 432 | if (should_update_submodules()) |
33028713 BW |
433 | load_gitmodules_file(index, NULL); |
434 | ||
34110cd4 | 435 | for (i = 0; i < index->cache_nr; i++) { |
9c5e6c80 | 436 | const struct cache_entry *ce = index->cache[i]; |
16da134b | 437 | |
e663db2f NTND |
438 | if (ce->ce_flags & CE_WT_REMOVE) { |
439 | display_progress(progress, ++cnt); | |
26f924d5 | 440 | unlink_entry(ce); |
e663db2f | 441 | } |
1fa6ead4 | 442 | } |
26f924d5 | 443 | |
6fdc2057 | 444 | remove_marked_cache_entries(index, 0); |
78478927 | 445 | remove_scheduled_dirs(); |
1fa6ead4 | 446 | |
26f924d5 | 447 | if (should_update_submodules()) |
33028713 | 448 | load_gitmodules_file(index, &state); |
a7bc845a | 449 | |
b2896d27 | 450 | if (has_promisor_remote()) |
c0c578b3 JT |
451 | /* |
452 | * Prefetch the objects that are to be checked out in the loop | |
453 | * below. | |
454 | */ | |
b2896d27 | 455 | prefetch_cache_entries(index, must_checkout); |
04155bda | 456 | |
7531e4b6 MT |
457 | get_parallel_checkout_configs(&pc_workers, &pc_threshold); |
458 | ||
04155bda | 459 | enable_delayed_checkout(&state); |
7531e4b6 MT |
460 | if (pc_workers > 1) |
461 | init_parallel_checkout(); | |
1fa6ead4 LT |
462 | for (i = 0; i < index->cache_nr; i++) { |
463 | struct cache_entry *ce = index->cache[i]; | |
464 | ||
b2896d27 | 465 | if (must_checkout(ce)) { |
1c4d6f46 MT |
466 | size_t last_pc_queue_size = pc_queue_size(); |
467 | ||
7d782416 | 468 | if (ce->ce_flags & CE_WT_REMOVE) |
033abf97 | 469 | BUG("both update and delete flags are set on %s", |
7d782416 | 470 | ce->name); |
7a51ed66 | 471 | ce->ce_flags &= ~CE_UPDATE; |
26f924d5 | 472 | errs |= checkout_entry(ce, &state, NULL, NULL); |
1c4d6f46 MT |
473 | |
474 | if (last_pc_queue_size == pc_queue_size()) | |
475 | display_progress(progress, ++cnt); | |
16da134b JS |
476 | } |
477 | } | |
7531e4b6 | 478 | if (pc_workers > 1) |
1c4d6f46 MT |
479 | errs |= run_parallel_checkout(&state, pc_workers, pc_threshold, |
480 | progress, &cnt); | |
4d4fcc54 | 481 | stop_progress(&progress); |
7a132c62 | 482 | errs |= finish_delayed_checkout(&state, NULL, o->verbose_update); |
26f924d5 | 483 | git_attr_set_direction(GIT_ATTR_CHECKIN); |
b878579a NTND |
484 | |
485 | if (o->clone) | |
486 | report_collided_checkout(index); | |
487 | ||
0d1ed596 | 488 | trace_performance_leave("check_updates"); |
c4758d3c | 489 | return errs != 0; |
16da134b JS |
490 | } |
491 | ||
eb9ae4b5 RS |
492 | static int verify_uptodate_sparse(const struct cache_entry *ce, |
493 | struct unpack_trees_options *o); | |
494 | static int verify_absent_sparse(const struct cache_entry *ce, | |
495 | enum unpack_trees_error_types, | |
496 | struct unpack_trees_options *o); | |
e800ec9d | 497 | |
a5c446f1 NTND |
498 | static int apply_sparse_checkout(struct index_state *istate, |
499 | struct cache_entry *ce, | |
500 | struct unpack_trees_options *o) | |
e800ec9d NTND |
501 | { |
502 | int was_skip_worktree = ce_skip_worktree(ce); | |
503 | ||
2431afbf | 504 | if (ce->ce_flags & CE_NEW_SKIP_WORKTREE) |
e800ec9d NTND |
505 | ce->ce_flags |= CE_SKIP_WORKTREE; |
506 | else | |
507 | ce->ce_flags &= ~CE_SKIP_WORKTREE; | |
078a58e8 NTND |
508 | if (was_skip_worktree != ce_skip_worktree(ce)) { |
509 | ce->ce_flags |= CE_UPDATE_IN_BASE; | |
883e248b | 510 | mark_fsmonitor_invalid(istate, ce); |
a5c446f1 | 511 | istate->cache_changed |= CE_ENTRY_CHANGED; |
078a58e8 | 512 | } |
e800ec9d NTND |
513 | |
514 | /* | |
eec3fc03 NTND |
515 | * if (!was_skip_worktree && !ce_skip_worktree()) { |
516 | * This is perfectly normal. Move on; | |
517 | * } | |
e800ec9d | 518 | */ |
eec3fc03 NTND |
519 | |
520 | /* | |
521 | * Merge strategies may set CE_UPDATE|CE_REMOVE outside checkout | |
522 | * area as a result of ce_skip_worktree() shortcuts in | |
700e66d6 NTND |
523 | * verify_absent() and verify_uptodate(). |
524 | * Make sure they don't modify worktree if they are already | |
525 | * outside checkout area | |
eec3fc03 | 526 | */ |
700e66d6 NTND |
527 | if (was_skip_worktree && ce_skip_worktree(ce)) { |
528 | ce->ce_flags &= ~CE_UPDATE; | |
529 | ||
530 | /* | |
531 | * By default, when CE_REMOVE is on, CE_WT_REMOVE is also | |
532 | * on to get that file removed from both index and worktree. | |
533 | * If that file is already outside worktree area, don't | |
534 | * bother remove it. | |
535 | */ | |
536 | if (ce->ce_flags & CE_REMOVE) | |
537 | ce->ce_flags &= ~CE_WT_REMOVE; | |
538 | } | |
e800ec9d NTND |
539 | |
540 | if (!was_skip_worktree && ce_skip_worktree(ce)) { | |
541 | /* | |
542 | * If CE_UPDATE is set, verify_uptodate() must be called already | |
543 | * also stat info may have lost after merged_entry() so calling | |
544 | * verify_uptodate() again may fail | |
545 | */ | |
3cc7c504 EN |
546 | if (!(ce->ce_flags & CE_UPDATE) && |
547 | verify_uptodate_sparse(ce, o)) { | |
548 | ce->ce_flags &= ~CE_SKIP_WORKTREE; | |
e800ec9d | 549 | return -1; |
3cc7c504 | 550 | } |
e800ec9d | 551 | ce->ce_flags |= CE_WT_REMOVE; |
7d782416 | 552 | ce->ce_flags &= ~CE_UPDATE; |
e800ec9d NTND |
553 | } |
554 | if (was_skip_worktree && !ce_skip_worktree(ce)) { | |
1ac83f42 | 555 | if (verify_absent_sparse(ce, WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN, o)) |
e800ec9d NTND |
556 | return -1; |
557 | ce->ce_flags |= CE_UPDATE; | |
558 | } | |
559 | return 0; | |
560 | } | |
561 | ||
ebb568b9 EN |
562 | static int warn_conflicted_path(struct index_state *istate, |
563 | int i, | |
564 | struct unpack_trees_options *o) | |
565 | { | |
566 | char *conflicting_path = istate->cache[i]->name; | |
567 | int count = 0; | |
568 | ||
569 | add_rejected_path(o, WARNING_SPARSE_UNMERGED_FILE, conflicting_path); | |
570 | ||
0eeb3be4 DS |
571 | /* Find out how many higher stage entries are at same path */ |
572 | while ((++count) + i < istate->cache_nr && | |
573 | !strcmp(conflicting_path, istate->cache[count + i]->name)) | |
574 | ; /* do nothing */ | |
575 | ||
ebb568b9 EN |
576 | return count; |
577 | } | |
578 | ||
5828e835 RS |
579 | static inline int call_unpack_fn(const struct cache_entry * const *src, |
580 | struct unpack_trees_options *o) | |
01904572 | 581 | { |
34110cd4 LT |
582 | int ret = o->fn(src, o); |
583 | if (ret > 0) | |
01904572 | 584 | ret = 0; |
01904572 LT |
585 | return ret; |
586 | } | |
587 | ||
da165f47 JH |
588 | static void mark_ce_used(struct cache_entry *ce, struct unpack_trees_options *o) |
589 | { | |
590 | ce->ce_flags |= CE_UNPACKED; | |
591 | ||
17a1bb57 DS |
592 | /* |
593 | * If this is a sparse directory, don't advance cache_bottom. | |
594 | * That will be advanced later using the cache-tree data. | |
595 | */ | |
596 | if (S_ISSPARSEDIR(ce->ce_mode)) | |
597 | return; | |
598 | ||
da165f47 JH |
599 | if (o->cache_bottom < o->src_index->cache_nr && |
600 | o->src_index->cache[o->cache_bottom] == ce) { | |
601 | int bottom = o->cache_bottom; | |
602 | while (bottom < o->src_index->cache_nr && | |
603 | o->src_index->cache[bottom]->ce_flags & CE_UNPACKED) | |
604 | bottom++; | |
605 | o->cache_bottom = bottom; | |
606 | } | |
607 | } | |
608 | ||
609 | static void mark_all_ce_unused(struct index_state *index) | |
610 | { | |
611 | int i; | |
612 | for (i = 0; i < index->cache_nr; i++) | |
2431afbf | 613 | index->cache[i]->ce_flags &= ~(CE_UNPACKED | CE_ADDED | CE_NEW_SKIP_WORKTREE); |
da165f47 JH |
614 | } |
615 | ||
eb9ae4b5 | 616 | static int locate_in_src_index(const struct cache_entry *ce, |
da165f47 JH |
617 | struct unpack_trees_options *o) |
618 | { | |
619 | struct index_state *index = o->src_index; | |
620 | int len = ce_namelen(ce); | |
621 | int pos = index_name_pos(index, ce->name, len); | |
622 | if (pos < 0) | |
623 | pos = -1 - pos; | |
624 | return pos; | |
625 | } | |
626 | ||
627 | /* | |
628 | * We call unpack_index_entry() with an unmerged cache entry | |
629 | * only in diff-index, and it wants a single callback. Skip | |
630 | * the other unmerged entry with the same name. | |
631 | */ | |
632 | static void mark_ce_used_same_name(struct cache_entry *ce, | |
633 | struct unpack_trees_options *o) | |
634 | { | |
635 | struct index_state *index = o->src_index; | |
636 | int len = ce_namelen(ce); | |
637 | int pos; | |
638 | ||
639 | for (pos = locate_in_src_index(ce, o); pos < index->cache_nr; pos++) { | |
640 | struct cache_entry *next = index->cache[pos]; | |
641 | if (len != ce_namelen(next) || | |
642 | memcmp(ce->name, next->name, len)) | |
643 | break; | |
644 | mark_ce_used(next, o); | |
645 | } | |
646 | } | |
647 | ||
648 | static struct cache_entry *next_cache_entry(struct unpack_trees_options *o) | |
649 | { | |
650 | const struct index_state *index = o->src_index; | |
651 | int pos = o->cache_bottom; | |
652 | ||
653 | while (pos < index->cache_nr) { | |
654 | struct cache_entry *ce = index->cache[pos]; | |
655 | if (!(ce->ce_flags & CE_UNPACKED)) | |
656 | return ce; | |
657 | pos++; | |
658 | } | |
659 | return NULL; | |
660 | } | |
661 | ||
9c5e6c80 | 662 | static void add_same_unmerged(const struct cache_entry *ce, |
da165f47 JH |
663 | struct unpack_trees_options *o) |
664 | { | |
665 | struct index_state *index = o->src_index; | |
666 | int len = ce_namelen(ce); | |
667 | int pos = index_name_pos(index, ce->name, len); | |
668 | ||
669 | if (0 <= pos) | |
670 | die("programming error in a caller of mark_ce_used_same_name"); | |
671 | for (pos = -pos - 1; pos < index->cache_nr; pos++) { | |
672 | struct cache_entry *next = index->cache[pos]; | |
673 | if (len != ce_namelen(next) || | |
674 | memcmp(ce->name, next->name, len)) | |
675 | break; | |
676 | add_entry(o, next, 0, 0); | |
677 | mark_ce_used(next, o); | |
678 | } | |
679 | } | |
680 | ||
681 | static int unpack_index_entry(struct cache_entry *ce, | |
682 | struct unpack_trees_options *o) | |
01904572 | 683 | { |
5828e835 | 684 | const struct cache_entry *src[MAX_UNPACK_TREES + 1] = { NULL, }; |
da165f47 | 685 | int ret; |
34110cd4 | 686 | |
66dbfd55 GV |
687 | src[0] = ce; |
688 | ||
da165f47 | 689 | mark_ce_used(ce, o); |
01904572 LT |
690 | if (ce_stage(ce)) { |
691 | if (o->skip_unmerged) { | |
34110cd4 LT |
692 | add_entry(o, ce, 0, 0); |
693 | return 0; | |
01904572 | 694 | } |
01904572 | 695 | } |
da165f47 JH |
696 | ret = call_unpack_fn(src, o); |
697 | if (ce_stage(ce)) | |
698 | mark_ce_used_same_name(ce, o); | |
699 | return ret; | |
01904572 LT |
700 | } |
701 | ||
90553847 | 702 | static int find_cache_pos(struct traverse_info *, const char *p, size_t len); |
730f7284 JH |
703 | |
704 | static void restore_cache_bottom(struct traverse_info *info, int bottom) | |
705 | { | |
706 | struct unpack_trees_options *o = info->data; | |
707 | ||
708 | if (o->diff_index_cached) | |
709 | return; | |
710 | o->cache_bottom = bottom; | |
711 | } | |
712 | ||
713 | static int switch_cache_bottom(struct traverse_info *info) | |
714 | { | |
715 | struct unpack_trees_options *o = info->data; | |
716 | int ret, pos; | |
717 | ||
718 | if (o->diff_index_cached) | |
719 | return 0; | |
720 | ret = o->cache_bottom; | |
90553847 | 721 | pos = find_cache_pos(info->prev, info->name, info->namelen); |
730f7284 JH |
722 | |
723 | if (pos < -1) | |
724 | o->cache_bottom = -2 - pos; | |
725 | else if (pos < 0) | |
726 | o->cache_bottom = o->src_index->cache_nr; | |
727 | return ret; | |
01904572 LT |
728 | } |
729 | ||
d12a8cf0 JH |
730 | static inline int are_same_oid(struct name_entry *name_j, struct name_entry *name_k) |
731 | { | |
ea82b2a0 | 732 | return !is_null_oid(&name_j->oid) && !is_null_oid(&name_k->oid) && oideq(&name_j->oid, &name_k->oid); |
d12a8cf0 JH |
733 | } |
734 | ||
b4da3738 NTND |
735 | static int all_trees_same_as_cache_tree(int n, unsigned long dirmask, |
736 | struct name_entry *names, | |
737 | struct traverse_info *info) | |
738 | { | |
739 | struct unpack_trees_options *o = info->data; | |
740 | int i; | |
741 | ||
742 | if (!o->merge || dirmask != ((1 << n) - 1)) | |
743 | return 0; | |
744 | ||
745 | for (i = 1; i < n; i++) | |
746 | if (!are_same_oid(names, names + i)) | |
747 | return 0; | |
748 | ||
749 | return cache_tree_matches_traversal(o->src_index->cache_tree, names, info); | |
750 | } | |
751 | ||
752 | static int index_pos_by_traverse_info(struct name_entry *names, | |
753 | struct traverse_info *info) | |
754 | { | |
755 | struct unpack_trees_options *o = info->data; | |
c43ab062 | 756 | struct strbuf name = STRBUF_INIT; |
b4da3738 NTND |
757 | int pos; |
758 | ||
c43ab062 JK |
759 | strbuf_make_traverse_path(&name, info, names->path, names->pathlen); |
760 | strbuf_addch(&name, '/'); | |
761 | pos = index_name_pos(o->src_index, name.buf, name.len); | |
13e13312 DS |
762 | if (pos >= 0) { |
763 | if (!o->src_index->sparse_index || | |
764 | !(o->src_index->cache[pos]->ce_flags & CE_SKIP_WORKTREE)) | |
765 | BUG("This is a directory and should not exist in index"); | |
766 | } else { | |
767 | pos = -pos - 1; | |
768 | } | |
573117df ES |
769 | if (pos >= o->src_index->cache_nr || |
770 | !starts_with(o->src_index->cache[pos]->name, name.buf) || | |
c43ab062 | 771 | (pos > 0 && starts_with(o->src_index->cache[pos-1]->name, name.buf))) |
573117df ES |
772 | BUG("pos %d doesn't point to the first entry of %s in index", |
773 | pos, name.buf); | |
c43ab062 | 774 | strbuf_release(&name); |
b4da3738 NTND |
775 | return pos; |
776 | } | |
777 | ||
778 | /* | |
779 | * Fast path if we detect that all trees are the same as cache-tree at this | |
5f4436a7 NTND |
780 | * path. We'll walk these trees in an iterative loop using cache-tree/index |
781 | * instead of ODB since we already know what these trees contain. | |
b4da3738 NTND |
782 | */ |
783 | static int traverse_by_cache_tree(int pos, int nr_entries, int nr_names, | |
b4da3738 NTND |
784 | struct traverse_info *info) |
785 | { | |
786 | struct cache_entry *src[MAX_UNPACK_TREES + 1] = { NULL, }; | |
787 | struct unpack_trees_options *o = info->data; | |
f1e11c65 NTND |
788 | struct cache_entry *tree_ce = NULL; |
789 | int ce_len = 0; | |
b4da3738 NTND |
790 | int i, d; |
791 | ||
792 | if (!o->merge) | |
793 | BUG("We need cache-tree to do this optimization"); | |
794 | ||
795 | /* | |
bd6a3fd7 | 796 | * Do what unpack_callback() and unpack_single_entry() normally |
b4da3738 NTND |
797 | * do. But we walk all paths in an iterative loop instead. |
798 | * | |
799 | * D/F conflicts and higher stage entries are not a concern | |
800 | * because cache-tree would be invalidated and we would never | |
801 | * get here in the first place. | |
802 | */ | |
803 | for (i = 0; i < nr_entries; i++) { | |
f1e11c65 | 804 | int new_ce_len, len, rc; |
b4da3738 NTND |
805 | |
806 | src[0] = o->src_index->cache[pos + i]; | |
807 | ||
808 | len = ce_namelen(src[0]); | |
f1e11c65 NTND |
809 | new_ce_len = cache_entry_size(len); |
810 | ||
811 | if (new_ce_len > ce_len) { | |
812 | new_ce_len <<= 1; | |
813 | tree_ce = xrealloc(tree_ce, new_ce_len); | |
814 | memset(tree_ce, 0, new_ce_len); | |
815 | ce_len = new_ce_len; | |
816 | ||
817 | tree_ce->ce_flags = create_ce_flags(0); | |
818 | ||
819 | for (d = 1; d <= nr_names; d++) | |
820 | src[d] = tree_ce; | |
821 | } | |
b4da3738 NTND |
822 | |
823 | tree_ce->ce_mode = src[0]->ce_mode; | |
b4da3738 NTND |
824 | tree_ce->ce_namelen = len; |
825 | oidcpy(&tree_ce->oid, &src[0]->oid); | |
826 | memcpy(tree_ce->name, src[0]->name, len + 1); | |
827 | ||
b4da3738 | 828 | rc = call_unpack_fn((const struct cache_entry * const *)src, o); |
f1e11c65 NTND |
829 | if (rc < 0) { |
830 | free(tree_ce); | |
b4da3738 | 831 | return rc; |
f1e11c65 | 832 | } |
b4da3738 NTND |
833 | |
834 | mark_ce_used(src[0], o); | |
835 | } | |
f1e11c65 | 836 | free(tree_ce); |
b4da3738 NTND |
837 | if (o->debug_unpack) |
838 | printf("Unpacked %d entries from %s to %s using cache-tree\n", | |
839 | nr_entries, | |
840 | o->src_index->cache[pos]->name, | |
841 | o->src_index->cache[pos + nr_entries - 1]->name); | |
842 | return 0; | |
843 | } | |
844 | ||
84563a62 JH |
845 | static int traverse_trees_recursive(int n, unsigned long dirmask, |
846 | unsigned long df_conflicts, | |
847 | struct name_entry *names, | |
848 | struct traverse_info *info) | |
16da134b | 849 | { |
67022e02 | 850 | struct unpack_trees_options *o = info->data; |
730f7284 | 851 | int i, ret, bottom; |
d12a8cf0 | 852 | int nr_buf = 0; |
ca885a4f | 853 | struct tree_desc t[MAX_UNPACK_TREES]; |
1ce584b0 | 854 | void *buf[MAX_UNPACK_TREES]; |
01904572 LT |
855 | struct traverse_info newinfo; |
856 | struct name_entry *p; | |
b4da3738 NTND |
857 | int nr_entries; |
858 | ||
859 | nr_entries = all_trees_same_as_cache_tree(n, dirmask, names, info); | |
860 | if (nr_entries > 0) { | |
b4da3738 NTND |
861 | int pos = index_pos_by_traverse_info(names, info); |
862 | ||
863 | if (!o->merge || df_conflicts) | |
864 | BUG("Wrong condition to get here buddy"); | |
865 | ||
866 | /* | |
867 | * All entries up to 'pos' must have been processed | |
868 | * (i.e. marked CE_UNPACKED) at this point. But to be safe, | |
869 | * save and restore cache_bottom anyway to not miss | |
870 | * unprocessed entries before 'pos'. | |
871 | */ | |
872 | bottom = o->cache_bottom; | |
66429698 | 873 | ret = traverse_by_cache_tree(pos, nr_entries, n, info); |
b4da3738 NTND |
874 | o->cache_bottom = bottom; |
875 | return ret; | |
876 | } | |
01904572 LT |
877 | |
878 | p = names; | |
879 | while (!p->mode) | |
880 | p++; | |
881 | ||
882 | newinfo = *info; | |
883 | newinfo.prev = info; | |
40e37256 | 884 | newinfo.pathspec = info->pathspec; |
90553847 JK |
885 | newinfo.name = p->path; |
886 | newinfo.namelen = p->pathlen; | |
887 | newinfo.mode = p->mode; | |
37806080 | 888 | newinfo.pathlen = st_add3(newinfo.pathlen, tree_entry_len(p), 1); |
603d2498 | 889 | newinfo.df_conflicts |= df_conflicts; |
01904572 | 890 | |
d12a8cf0 JH |
891 | /* |
892 | * Fetch the tree from the ODB for each peer directory in the | |
893 | * n commits. | |
894 | * | |
895 | * For 2- and 3-way traversals, we try to avoid hitting the | |
896 | * ODB twice for the same OID. This should yield a nice speed | |
897 | * up in checkouts and merges when the commits are similar. | |
898 | * | |
899 | * We don't bother doing the full O(n^2) search for larger n, | |
900 | * because wider traversals don't happen that often and we | |
901 | * avoid the search setup. | |
902 | * | |
903 | * When 2 peer OIDs are the same, we just copy the tree | |
904 | * descriptor data. This implicitly borrows the buffer | |
905 | * data from the earlier cell. | |
906 | */ | |
01904572 | 907 | for (i = 0; i < n; i++, dirmask >>= 1) { |
d12a8cf0 JH |
908 | if (i > 0 && are_same_oid(&names[i], &names[i - 1])) |
909 | t[i] = t[i - 1]; | |
910 | else if (i > 1 && are_same_oid(&names[i], &names[i - 2])) | |
911 | t[i] = t[i - 2]; | |
912 | else { | |
5c377d3d | 913 | const struct object_id *oid = NULL; |
d12a8cf0 | 914 | if (dirmask & 1) |
ea82b2a0 | 915 | oid = &names[i].oid; |
5e575807 | 916 | buf[nr_buf++] = fill_tree_descriptor(the_repository, t + i, oid); |
d12a8cf0 | 917 | } |
01904572 | 918 | } |
730f7284 JH |
919 | |
920 | bottom = switch_cache_bottom(&newinfo); | |
67022e02 | 921 | ret = traverse_trees(o->src_index, n, t, &newinfo); |
730f7284 | 922 | restore_cache_bottom(&newinfo, bottom); |
1ce584b0 | 923 | |
d12a8cf0 | 924 | for (i = 0; i < nr_buf; i++) |
1ce584b0 JN |
925 | free(buf[i]); |
926 | ||
730f7284 | 927 | return ret; |
01904572 LT |
928 | } |
929 | ||
930 | /* | |
931 | * Compare the traverse-path to the cache entry without actually | |
932 | * having to generate the textual representation of the traverse | |
933 | * path. | |
934 | * | |
935 | * NOTE! This *only* compares up to the size of the traverse path | |
936 | * itself - the caller needs to do the final check for the cache | |
937 | * entry having more data at the end! | |
938 | */ | |
90553847 JK |
939 | static int do_compare_entry_piecewise(const struct cache_entry *ce, |
940 | const struct traverse_info *info, | |
941 | const char *name, size_t namelen, | |
942 | unsigned mode) | |
01904572 | 943 | { |
90553847 | 944 | int pathlen, ce_len; |
01904572 LT |
945 | const char *ce_name; |
946 | ||
947 | if (info->prev) { | |
d9c2bd56 | 948 | int cmp = do_compare_entry_piecewise(ce, info->prev, |
90553847 JK |
949 | info->name, info->namelen, |
950 | info->mode); | |
01904572 LT |
951 | if (cmp) |
952 | return cmp; | |
953 | } | |
954 | pathlen = info->pathlen; | |
955 | ce_len = ce_namelen(ce); | |
956 | ||
957 | /* If ce_len < pathlen then we must have previously hit "name == directory" entry */ | |
958 | if (ce_len < pathlen) | |
959 | return -1; | |
960 | ||
961 | ce_len -= pathlen; | |
962 | ce_name = ce->name + pathlen; | |
963 | ||
90553847 | 964 | return df_name_compare(ce_name, ce_len, S_IFREG, name, namelen, mode); |
01904572 LT |
965 | } |
966 | ||
d9c2bd56 DT |
967 | static int do_compare_entry(const struct cache_entry *ce, |
968 | const struct traverse_info *info, | |
90553847 JK |
969 | const char *name, size_t namelen, |
970 | unsigned mode) | |
d9c2bd56 | 971 | { |
90553847 | 972 | int pathlen, ce_len; |
d9c2bd56 DT |
973 | const char *ce_name; |
974 | int cmp; | |
cd807a5c | 975 | unsigned ce_mode; |
d9c2bd56 DT |
976 | |
977 | /* | |
978 | * If we have not precomputed the traverse path, it is quicker | |
979 | * to avoid doing so. But if we have precomputed it, | |
980 | * it is quicker to use the precomputed version. | |
981 | */ | |
982 | if (!info->traverse_path) | |
90553847 | 983 | return do_compare_entry_piecewise(ce, info, name, namelen, mode); |
d9c2bd56 DT |
984 | |
985 | cmp = strncmp(ce->name, info->traverse_path, info->pathlen); | |
986 | if (cmp) | |
987 | return cmp; | |
988 | ||
989 | pathlen = info->pathlen; | |
990 | ce_len = ce_namelen(ce); | |
991 | ||
992 | if (ce_len < pathlen) | |
993 | return -1; | |
994 | ||
995 | ce_len -= pathlen; | |
996 | ce_name = ce->name + pathlen; | |
997 | ||
cd807a5c DS |
998 | ce_mode = S_ISSPARSEDIR(ce->ce_mode) ? S_IFDIR : S_IFREG; |
999 | return df_name_compare(ce_name, ce_len, ce_mode, name, namelen, mode); | |
d9c2bd56 DT |
1000 | } |
1001 | ||
01904572 LT |
1002 | static int compare_entry(const struct cache_entry *ce, const struct traverse_info *info, const struct name_entry *n) |
1003 | { | |
90553847 | 1004 | int cmp = do_compare_entry(ce, info, n->path, n->pathlen, n->mode); |
01904572 LT |
1005 | if (cmp) |
1006 | return cmp; | |
1007 | ||
cd807a5c DS |
1008 | /* |
1009 | * At this point, we know that we have a prefix match. If ce | |
1010 | * is a sparse directory, then allow an exact match. This only | |
1011 | * works when the input name is a directory, since ce->name | |
1012 | * ends in a directory separator. | |
1013 | */ | |
1014 | if (S_ISSPARSEDIR(ce->ce_mode) && | |
1015 | ce->ce_namelen == traverse_path_len(info, tree_entry_len(n)) + 1) | |
1016 | return 0; | |
1017 | ||
01904572 LT |
1018 | /* |
1019 | * Even if the beginning compared identically, the ce should | |
1020 | * compare as bigger than a directory leading up to it! | |
1021 | */ | |
b3b3cbcb | 1022 | return ce_namelen(ce) > traverse_path_len(info, tree_entry_len(n)); |
01904572 LT |
1023 | } |
1024 | ||
da165f47 JH |
1025 | static int ce_in_traverse_path(const struct cache_entry *ce, |
1026 | const struct traverse_info *info) | |
1027 | { | |
1028 | if (!info->prev) | |
1029 | return 1; | |
90553847 JK |
1030 | if (do_compare_entry(ce, info->prev, |
1031 | info->name, info->namelen, info->mode)) | |
da165f47 JH |
1032 | return 0; |
1033 | /* | |
1034 | * If ce (blob) is the same name as the path (which is a tree | |
1035 | * we will be descending into), it won't be inside it. | |
1036 | */ | |
1037 | return (info->pathlen < ce_namelen(ce)); | |
1038 | } | |
1039 | ||
a849735b JM |
1040 | static struct cache_entry *create_ce_entry(const struct traverse_info *info, |
1041 | const struct name_entry *n, | |
1042 | int stage, | |
1043 | struct index_state *istate, | |
523506df DS |
1044 | int is_transient, |
1045 | int is_sparse_directory) | |
01904572 | 1046 | { |
b3b3cbcb | 1047 | size_t len = traverse_path_len(info, tree_entry_len(n)); |
523506df | 1048 | size_t alloc_len = is_sparse_directory ? len + 1 : len; |
a849735b JM |
1049 | struct cache_entry *ce = |
1050 | is_transient ? | |
523506df DS |
1051 | make_empty_transient_cache_entry(alloc_len, NULL) : |
1052 | make_empty_cache_entry(istate, alloc_len); | |
01904572 LT |
1053 | |
1054 | ce->ce_mode = create_ce_mode(n->mode); | |
b60e188c TG |
1055 | ce->ce_flags = create_ce_flags(stage); |
1056 | ce->ce_namelen = len; | |
ea82b2a0 | 1057 | oidcpy(&ce->oid, &n->oid); |
5aa02f98 JK |
1058 | /* len+1 because the cache_entry allocates space for NUL */ |
1059 | make_traverse_path(ce->name, len + 1, info, n->path, n->pathlen); | |
01904572 | 1060 | |
523506df DS |
1061 | if (is_sparse_directory) { |
1062 | ce->name[len] = '/'; | |
1063 | ce->name[len + 1] = '\0'; | |
1064 | ce->ce_namelen++; | |
1065 | ce->ce_flags |= CE_SKIP_WORKTREE; | |
1066 | } | |
1067 | ||
01904572 LT |
1068 | return ce; |
1069 | } | |
1070 | ||
b4da3738 NTND |
1071 | /* |
1072 | * Note that traverse_by_cache_tree() duplicates some logic in this function | |
1073 | * without actually calling it. If you change the logic here you may need to | |
1074 | * check and change there as well. | |
1075 | */ | |
bd6a3fd7 DS |
1076 | static int unpack_single_entry(int n, unsigned long mask, |
1077 | unsigned long dirmask, | |
1078 | struct cache_entry **src, | |
1079 | const struct name_entry *names, | |
1080 | const struct traverse_info *info) | |
01904572 LT |
1081 | { |
1082 | int i; | |
1083 | struct unpack_trees_options *o = info->data; | |
603d2498 | 1084 | unsigned long conflicts = info->df_conflicts | dirmask; |
01904572 | 1085 | |
01904572 LT |
1086 | if (mask == dirmask && !src[0]) |
1087 | return 0; | |
1088 | ||
523506df DS |
1089 | /* |
1090 | * When we have a sparse directory entry for src[0], | |
1091 | * then this isn't necessarily a directory-file conflict. | |
1092 | */ | |
1093 | if (mask == dirmask && src[0] && | |
1094 | S_ISSPARSEDIR(src[0]->ce_mode)) | |
1095 | conflicts = 0; | |
1096 | ||
01904572 LT |
1097 | /* |
1098 | * Ok, we've filled in up to any potential index entry in src[0], | |
1099 | * now do the rest. | |
1100 | */ | |
1101 | for (i = 0; i < n; i++) { | |
1102 | int stage; | |
1103 | unsigned int bit = 1ul << i; | |
1104 | if (conflicts & bit) { | |
1105 | src[i + o->merge] = o->df_conflict_entry; | |
1106 | continue; | |
1107 | } | |
1108 | if (!(mask & bit)) | |
1109 | continue; | |
1110 | if (!o->merge) | |
1111 | stage = 0; | |
1112 | else if (i + 1 < o->head_idx) | |
1113 | stage = 1; | |
1114 | else if (i + 1 > o->head_idx) | |
1115 | stage = 3; | |
1116 | else | |
1117 | stage = 2; | |
a849735b JM |
1118 | |
1119 | /* | |
1120 | * If the merge bit is set, then the cache entries are | |
1121 | * discarded in the following block. In this case, | |
1122 | * construct "transient" cache_entries, as they are | |
1123 | * not stored in the index. otherwise construct the | |
1124 | * cache entry from the index aware logic. | |
1125 | */ | |
523506df DS |
1126 | src[i + o->merge] = create_ce_entry(info, names + i, stage, |
1127 | &o->result, o->merge, | |
1128 | bit & dirmask); | |
01904572 LT |
1129 | } |
1130 | ||
5d80ef5a RS |
1131 | if (o->merge) { |
1132 | int rc = call_unpack_fn((const struct cache_entry * const *)src, | |
1133 | o); | |
1134 | for (i = 0; i < n; i++) { | |
1135 | struct cache_entry *ce = src[i + o->merge]; | |
1136 | if (ce != o->df_conflict_entry) | |
a849735b | 1137 | discard_cache_entry(ce); |
5d80ef5a RS |
1138 | } |
1139 | return rc; | |
1140 | } | |
01904572 | 1141 | |
01904572 | 1142 | for (i = 0; i < n; i++) |
aab3b9a1 | 1143 | if (src[i] && src[i] != o->df_conflict_entry) |
46169180 JK |
1144 | if (do_add_entry(o, src[i], 0, 0)) |
1145 | return -1; | |
1146 | ||
01904572 LT |
1147 | return 0; |
1148 | } | |
1149 | ||
353c5eeb JH |
1150 | static int unpack_failed(struct unpack_trees_options *o, const char *message) |
1151 | { | |
1152 | discard_index(&o->result); | |
b165fac8 | 1153 | if (!o->quiet && !o->exiting_early) { |
353c5eeb JH |
1154 | if (message) |
1155 | return error("%s", message); | |
1156 | return -1; | |
1157 | } | |
1158 | return -1; | |
1159 | } | |
1160 | ||
730f7284 JH |
1161 | /* |
1162 | * The tree traversal is looking at name p. If we have a matching entry, | |
1163 | * return it. If name p is a directory in the index, do not return | |
1164 | * anything, as we will want to match it when the traversal descends into | |
1165 | * the directory. | |
1166 | */ | |
1167 | static int find_cache_pos(struct traverse_info *info, | |
90553847 | 1168 | const char *p, size_t p_len) |
730f7284 JH |
1169 | { |
1170 | int pos; | |
1171 | struct unpack_trees_options *o = info->data; | |
1172 | struct index_state *index = o->src_index; | |
1173 | int pfxlen = info->pathlen; | |
730f7284 JH |
1174 | |
1175 | for (pos = o->cache_bottom; pos < index->cache_nr; pos++) { | |
9c5e6c80 | 1176 | const struct cache_entry *ce = index->cache[pos]; |
730f7284 JH |
1177 | const char *ce_name, *ce_slash; |
1178 | int cmp, ce_len; | |
1179 | ||
e53e6b44 BD |
1180 | if (ce->ce_flags & CE_UNPACKED) { |
1181 | /* | |
1182 | * cache_bottom entry is already unpacked, so | |
1183 | * we can never match it; don't check it | |
1184 | * again. | |
1185 | */ | |
1186 | if (pos == o->cache_bottom) | |
1187 | ++o->cache_bottom; | |
730f7284 | 1188 | continue; |
e53e6b44 | 1189 | } |
a6720955 DT |
1190 | if (!ce_in_traverse_path(ce, info)) { |
1191 | /* | |
1192 | * Check if we can skip future cache checks | |
1193 | * (because we're already past all possible | |
1194 | * entries in the traverse path). | |
1195 | */ | |
1196 | if (info->traverse_path) { | |
1197 | if (strncmp(ce->name, info->traverse_path, | |
1198 | info->pathlen) > 0) | |
1199 | break; | |
1200 | } | |
730f7284 | 1201 | continue; |
a6720955 | 1202 | } |
730f7284 JH |
1203 | ce_name = ce->name + pfxlen; |
1204 | ce_slash = strchr(ce_name, '/'); | |
1205 | if (ce_slash) | |
1206 | ce_len = ce_slash - ce_name; | |
1207 | else | |
1208 | ce_len = ce_namelen(ce) - pfxlen; | |
90553847 | 1209 | cmp = name_compare(p, p_len, ce_name, ce_len); |
730f7284 JH |
1210 | /* |
1211 | * Exact match; if we have a directory we need to | |
1212 | * delay returning it. | |
1213 | */ | |
1214 | if (!cmp) | |
1215 | return ce_slash ? -2 - pos : pos; | |
1216 | if (0 < cmp) | |
1217 | continue; /* keep looking */ | |
1218 | /* | |
1219 | * ce_name sorts after p->path; could it be that we | |
1220 | * have files under p->path directory in the index? | |
1221 | * E.g. ce_name == "t-i", and p->path == "t"; we may | |
1222 | * have "t/a" in the index. | |
1223 | */ | |
90553847 | 1224 | if (p_len < ce_len && !memcmp(ce_name, p, p_len) && |
730f7284 JH |
1225 | ce_name[p_len] < '/') |
1226 | continue; /* keep looking */ | |
1227 | break; | |
1228 | } | |
1229 | return -1; | |
1230 | } | |
1231 | ||
523506df DS |
1232 | /* |
1233 | * Given a sparse directory entry 'ce', compare ce->name to | |
1234 | * info->name + '/' + p->path + '/' if info->name is non-empty. | |
1235 | * Compare ce->name to p->path + '/' otherwise. Note that | |
1236 | * ce->name must end in a trailing '/' because it is a sparse | |
1237 | * directory entry. | |
1238 | */ | |
1239 | static int sparse_dir_matches_path(const struct cache_entry *ce, | |
1240 | struct traverse_info *info, | |
1241 | const struct name_entry *p) | |
1242 | { | |
1243 | assert(S_ISSPARSEDIR(ce->ce_mode)); | |
1244 | assert(ce->name[ce->ce_namelen - 1] == '/'); | |
1245 | ||
1246 | if (info->namelen) | |
1247 | return ce->ce_namelen == info->namelen + p->pathlen + 2 && | |
1248 | ce->name[info->namelen] == '/' && | |
1249 | !strncmp(ce->name, info->name, info->namelen) && | |
1250 | !strncmp(ce->name + info->namelen + 1, p->path, p->pathlen); | |
1251 | return ce->ce_namelen == p->pathlen + 1 && | |
1252 | !strncmp(ce->name, p->path, p->pathlen); | |
1253 | } | |
1254 | ||
730f7284 JH |
1255 | static struct cache_entry *find_cache_entry(struct traverse_info *info, |
1256 | const struct name_entry *p) | |
1257 | { | |
72d84ea3 | 1258 | const char *path; |
90553847 | 1259 | int pos = find_cache_pos(info, p->path, p->pathlen); |
730f7284 JH |
1260 | struct unpack_trees_options *o = info->data; |
1261 | ||
1262 | if (0 <= pos) | |
1263 | return o->src_index->cache[pos]; | |
523506df DS |
1264 | |
1265 | /* | |
1266 | * Check for a sparse-directory entry named "path/". | |
1267 | * Due to the input p->path not having a trailing | |
1268 | * slash, the negative 'pos' value overshoots the | |
1269 | * expected position, hence "-2" instead of "-1". | |
1270 | */ | |
1271 | pos = -pos - 2; | |
1272 | ||
1273 | if (pos < 0 || pos >= o->src_index->cache_nr) | |
730f7284 | 1274 | return NULL; |
523506df DS |
1275 | |
1276 | /* | |
1277 | * Due to lexicographic sorting and sparse directory | |
1278 | * entries ending with a trailing slash, our path as a | |
1279 | * sparse directory (e.g "subdir/") and our path as a | |
1280 | * file (e.g. "subdir") might be separated by other | |
1281 | * paths (e.g. "subdir-"). | |
1282 | */ | |
1283 | while (pos >= 0) { | |
72d84ea3 | 1284 | struct cache_entry *ce = o->src_index->cache[pos]; |
523506df | 1285 | |
72d84ea3 DS |
1286 | if (!skip_prefix(ce->name, info->traverse_path, &path) || |
1287 | strncmp(path, p->path, p->pathlen) || | |
1288 | path[p->pathlen] != '/') | |
523506df DS |
1289 | return NULL; |
1290 | ||
1291 | if (S_ISSPARSEDIR(ce->ce_mode) && | |
1292 | sparse_dir_matches_path(ce, info, p)) | |
1293 | return ce; | |
1294 | ||
1295 | pos--; | |
1296 | } | |
1297 | ||
1298 | return NULL; | |
730f7284 JH |
1299 | } |
1300 | ||
ba655da5 JH |
1301 | static void debug_path(struct traverse_info *info) |
1302 | { | |
1303 | if (info->prev) { | |
1304 | debug_path(info->prev); | |
90553847 | 1305 | if (*info->prev->name) |
ba655da5 JH |
1306 | putchar('/'); |
1307 | } | |
90553847 | 1308 | printf("%s", info->name); |
ba655da5 JH |
1309 | } |
1310 | ||
1311 | static void debug_name_entry(int i, struct name_entry *n) | |
1312 | { | |
1313 | printf("ent#%d %06o %s\n", i, | |
1314 | n->path ? n->mode : 0, | |
1315 | n->path ? n->path : "(missing)"); | |
1316 | } | |
1317 | ||
1318 | static void debug_unpack_callback(int n, | |
1319 | unsigned long mask, | |
1320 | unsigned long dirmask, | |
1321 | struct name_entry *names, | |
1322 | struct traverse_info *info) | |
1323 | { | |
1324 | int i; | |
1325 | printf("* unpack mask %lu, dirmask %lu, cnt %d ", | |
1326 | mask, dirmask, n); | |
1327 | debug_path(info); | |
1328 | putchar('\n'); | |
1329 | for (i = 0; i < n; i++) | |
1330 | debug_name_entry(i, names + i); | |
1331 | } | |
1332 | ||
523506df DS |
1333 | /* |
1334 | * Returns true if and only if the given cache_entry is a | |
1335 | * sparse-directory entry that matches the given name_entry | |
1336 | * from the tree walk at the given traverse_info. | |
1337 | */ | |
1338 | static int is_sparse_directory_entry(struct cache_entry *ce, | |
1339 | struct name_entry *name, | |
1340 | struct traverse_info *info) | |
1341 | { | |
1342 | if (!ce || !name || !S_ISSPARSEDIR(ce->ce_mode)) | |
1343 | return 0; | |
1344 | ||
1345 | return sparse_dir_matches_path(ce, info, name); | |
1346 | } | |
1347 | ||
b4da3738 NTND |
1348 | /* |
1349 | * Note that traverse_by_cache_tree() duplicates some logic in this function | |
1350 | * without actually calling it. If you change the logic here you may need to | |
1351 | * check and change there as well. | |
1352 | */ | |
01904572 LT |
1353 | static int unpack_callback(int n, unsigned long mask, unsigned long dirmask, struct name_entry *names, struct traverse_info *info) |
1354 | { | |
c7cddc1a | 1355 | struct cache_entry *src[MAX_UNPACK_TREES + 1] = { NULL, }; |
01904572 | 1356 | struct unpack_trees_options *o = info->data; |
01904572 LT |
1357 | const struct name_entry *p = names; |
1358 | ||
1359 | /* Find first entry with a real name (we could use "mask" too) */ | |
1360 | while (!p->mode) | |
1361 | p++; | |
1362 | ||
ba655da5 JH |
1363 | if (o->debug_unpack) |
1364 | debug_unpack_callback(n, mask, dirmask, names, info); | |
1365 | ||
01904572 LT |
1366 | /* Are we supposed to look at the index too? */ |
1367 | if (o->merge) { | |
da165f47 | 1368 | while (1) { |
da165f47 | 1369 | int cmp; |
730f7284 JH |
1370 | struct cache_entry *ce; |
1371 | ||
1372 | if (o->diff_index_cached) | |
1373 | ce = next_cache_entry(o); | |
1374 | else | |
1375 | ce = find_cache_entry(info, p); | |
1376 | ||
da165f47 JH |
1377 | if (!ce) |
1378 | break; | |
1379 | cmp = compare_entry(ce, info, p); | |
01904572 LT |
1380 | if (cmp < 0) { |
1381 | if (unpack_index_entry(ce, o) < 0) | |
353c5eeb | 1382 | return unpack_failed(o, NULL); |
01904572 LT |
1383 | continue; |
1384 | } | |
1385 | if (!cmp) { | |
1386 | if (ce_stage(ce)) { | |
1387 | /* | |
da165f47 JH |
1388 | * If we skip unmerged index |
1389 | * entries, we'll skip this | |
1390 | * entry *and* the tree | |
1391 | * entries associated with it! | |
01904572 | 1392 | */ |
34110cd4 | 1393 | if (o->skip_unmerged) { |
da165f47 | 1394 | add_same_unmerged(ce, o); |
01904572 | 1395 | return mask; |
34110cd4 | 1396 | } |
01904572 LT |
1397 | } |
1398 | src[0] = ce; | |
01904572 LT |
1399 | } |
1400 | break; | |
1401 | } | |
1402 | } | |
1403 | ||
bd6a3fd7 | 1404 | if (unpack_single_entry(n, mask, dirmask, src, names, info) < 0) |
01904572 LT |
1405 | return -1; |
1406 | ||
97e5954b | 1407 | if (o->merge && src[0]) { |
da165f47 JH |
1408 | if (ce_stage(src[0])) |
1409 | mark_ce_used_same_name(src[0], o); | |
1410 | else | |
1411 | mark_ce_used(src[0], o); | |
1412 | } | |
1413 | ||
01904572 LT |
1414 | /* Now handle any directories.. */ |
1415 | if (dirmask) { | |
b65982b6 JH |
1416 | /* special case: "diff-index --cached" looking at a tree */ |
1417 | if (o->diff_index_cached && | |
1418 | n == 1 && dirmask == 1 && S_ISDIR(names->mode)) { | |
1419 | int matches; | |
1420 | matches = cache_tree_matches_traversal(o->src_index->cache_tree, | |
1421 | names, info); | |
1422 | /* | |
da165f47 JH |
1423 | * Everything under the name matches; skip the |
1424 | * entire hierarchy. diff_index_cached codepath | |
1425 | * special cases D/F conflicts in such a way that | |
1426 | * it does not do any look-ahead, so this is safe. | |
b65982b6 JH |
1427 | */ |
1428 | if (matches) { | |
da165f47 | 1429 | o->cache_bottom += matches; |
b65982b6 JH |
1430 | return mask; |
1431 | } | |
1432 | } | |
1433 | ||
523506df DS |
1434 | if (!is_sparse_directory_entry(src[0], names, info) && |
1435 | traverse_trees_recursive(n, dirmask, mask & ~dirmask, | |
1436 | names, info) < 0) { | |
542c264b | 1437 | return -1; |
523506df DS |
1438 | } |
1439 | ||
01904572 LT |
1440 | return mask; |
1441 | } | |
1442 | ||
1443 | return mask; | |
1444 | } | |
1445 | ||
27c82fb3 NTND |
1446 | static int clear_ce_flags_1(struct index_state *istate, |
1447 | struct cache_entry **cache, int nr, | |
fc2b6214 | 1448 | struct strbuf *prefix, |
28911091 | 1449 | int select_mask, int clear_mask, |
468ce99b | 1450 | struct pattern_list *pl, |
4dcd4def DS |
1451 | enum pattern_match_result default_match, |
1452 | int progress_nr); | |
28911091 | 1453 | |
9037026d | 1454 | /* Whole directory matching */ |
27c82fb3 NTND |
1455 | static int clear_ce_flags_dir(struct index_state *istate, |
1456 | struct cache_entry **cache, int nr, | |
fc2b6214 | 1457 | struct strbuf *prefix, |
9037026d NTND |
1458 | char *basename, |
1459 | int select_mask, int clear_mask, | |
468ce99b | 1460 | struct pattern_list *pl, |
4dcd4def DS |
1461 | enum pattern_match_result default_match, |
1462 | int progress_nr) | |
9037026d | 1463 | { |
28911091 | 1464 | struct cache_entry **cache_end; |
9037026d | 1465 | int dtype = DT_DIR; |
fc2b6214 | 1466 | int rc; |
eb42feca DS |
1467 | enum pattern_match_result ret, orig_ret; |
1468 | orig_ret = path_matches_pattern_list(prefix->buf, prefix->len, | |
1469 | basename, &dtype, pl, istate); | |
9037026d | 1470 | |
fc2b6214 | 1471 | strbuf_addch(prefix, '/'); |
9037026d | 1472 | |
28911091 | 1473 | /* If undecided, use matching result of parent dir in defval */ |
eb42feca | 1474 | if (orig_ret == UNDECIDED) |
468ce99b | 1475 | ret = default_match; |
eb42feca DS |
1476 | else |
1477 | ret = orig_ret; | |
9037026d | 1478 | |
28911091 NTND |
1479 | for (cache_end = cache; cache_end != cache + nr; cache_end++) { |
1480 | struct cache_entry *ce = *cache_end; | |
fc2b6214 | 1481 | if (strncmp(ce->name, prefix->buf, prefix->len)) |
28911091 | 1482 | break; |
9037026d NTND |
1483 | } |
1484 | ||
eb42feca DS |
1485 | if (pl->use_cone_patterns && orig_ret == MATCHED_RECURSIVE) { |
1486 | struct cache_entry **ce = cache; | |
4c6c7971 | 1487 | rc = cache_end - cache; |
eb42feca DS |
1488 | |
1489 | while (ce < cache_end) { | |
1490 | (*ce)->ce_flags &= ~clear_mask; | |
1491 | ce++; | |
1492 | } | |
1493 | } else if (pl->use_cone_patterns && orig_ret == NOT_MATCHED) { | |
4c6c7971 | 1494 | rc = cache_end - cache; |
eb42feca DS |
1495 | } else { |
1496 | rc = clear_ce_flags_1(istate, cache, cache_end - cache, | |
1497 | prefix, | |
1498 | select_mask, clear_mask, | |
4dcd4def DS |
1499 | pl, ret, |
1500 | progress_nr); | |
eb42feca DS |
1501 | } |
1502 | ||
fc2b6214 AP |
1503 | strbuf_setlen(prefix, prefix->len - 1); |
1504 | return rc; | |
9037026d NTND |
1505 | } |
1506 | ||
1507 | /* | |
1508 | * Traverse the index, find every entry that matches according to | |
caa3d554 | 1509 | * o->pl. Do "ce_flags &= ~clear_mask" on those entries. Return the |
9037026d NTND |
1510 | * number of traversed entries. |
1511 | * | |
1512 | * If select_mask is non-zero, only entries whose ce_flags has on of | |
1513 | * those bits enabled are traversed. | |
1514 | * | |
1515 | * cache : pointer to an index entry | |
1516 | * prefix_len : an offset to its path | |
1517 | * | |
1518 | * The current path ("prefix") including the trailing '/' is | |
1519 | * cache[0]->name[0..(prefix_len-1)] | |
1520 | * Top level path has prefix_len zero. | |
1521 | */ | |
27c82fb3 NTND |
1522 | static int clear_ce_flags_1(struct index_state *istate, |
1523 | struct cache_entry **cache, int nr, | |
fc2b6214 | 1524 | struct strbuf *prefix, |
9037026d | 1525 | int select_mask, int clear_mask, |
468ce99b | 1526 | struct pattern_list *pl, |
4dcd4def DS |
1527 | enum pattern_match_result default_match, |
1528 | int progress_nr) | |
9037026d | 1529 | { |
d20bc01a | 1530 | struct cache_entry **cache_end = nr ? cache + nr : cache; |
9037026d NTND |
1531 | |
1532 | /* | |
1533 | * Process all entries that have the given prefix and meet | |
1534 | * select_mask condition | |
1535 | */ | |
1536 | while(cache != cache_end) { | |
1537 | struct cache_entry *ce = *cache; | |
1538 | const char *name, *slash; | |
468ce99b DS |
1539 | int len, dtype; |
1540 | enum pattern_match_result ret; | |
9037026d | 1541 | |
4dcd4def DS |
1542 | display_progress(istate->progress, progress_nr); |
1543 | ||
9037026d NTND |
1544 | if (select_mask && !(ce->ce_flags & select_mask)) { |
1545 | cache++; | |
4dcd4def | 1546 | progress_nr++; |
9037026d NTND |
1547 | continue; |
1548 | } | |
1549 | ||
fc2b6214 | 1550 | if (prefix->len && strncmp(ce->name, prefix->buf, prefix->len)) |
9037026d NTND |
1551 | break; |
1552 | ||
fc2b6214 | 1553 | name = ce->name + prefix->len; |
9037026d NTND |
1554 | slash = strchr(name, '/'); |
1555 | ||
1556 | /* If it's a directory, try whole directory match first */ | |
1557 | if (slash) { | |
1558 | int processed; | |
1559 | ||
1560 | len = slash - name; | |
fc2b6214 | 1561 | strbuf_add(prefix, name, len); |
9037026d | 1562 | |
27c82fb3 | 1563 | processed = clear_ce_flags_dir(istate, cache, cache_end - cache, |
fc2b6214 AP |
1564 | prefix, |
1565 | prefix->buf + prefix->len - len, | |
9037026d | 1566 | select_mask, clear_mask, |
4dcd4def DS |
1567 | pl, default_match, |
1568 | progress_nr); | |
9037026d NTND |
1569 | |
1570 | /* clear_c_f_dir eats a whole dir already? */ | |
1571 | if (processed) { | |
1572 | cache += processed; | |
4dcd4def | 1573 | progress_nr += processed; |
fc2b6214 | 1574 | strbuf_setlen(prefix, prefix->len - len); |
9037026d NTND |
1575 | continue; |
1576 | } | |
1577 | ||
fc2b6214 | 1578 | strbuf_addch(prefix, '/'); |
4dcd4def DS |
1579 | processed = clear_ce_flags_1(istate, cache, cache_end - cache, |
1580 | prefix, | |
1581 | select_mask, clear_mask, pl, | |
1582 | default_match, progress_nr); | |
1583 | ||
1584 | cache += processed; | |
1585 | progress_nr += processed; | |
1586 | ||
fc2b6214 | 1587 | strbuf_setlen(prefix, prefix->len - len - 1); |
9037026d NTND |
1588 | continue; |
1589 | } | |
1590 | ||
1591 | /* Non-directory */ | |
1592 | dtype = ce_to_dtype(ce); | |
468ce99b DS |
1593 | ret = path_matches_pattern_list(ce->name, |
1594 | ce_namelen(ce), | |
1595 | name, &dtype, pl, istate); | |
1596 | if (ret == UNDECIDED) | |
1597 | ret = default_match; | |
f998a3f1 | 1598 | if (ret == MATCHED || ret == MATCHED_RECURSIVE) |
9037026d NTND |
1599 | ce->ce_flags &= ~clear_mask; |
1600 | cache++; | |
4dcd4def | 1601 | progress_nr++; |
9037026d | 1602 | } |
4dcd4def DS |
1603 | |
1604 | display_progress(istate->progress, progress_nr); | |
9037026d NTND |
1605 | return nr - (cache_end - cache); |
1606 | } | |
1607 | ||
27c82fb3 NTND |
1608 | static int clear_ce_flags(struct index_state *istate, |
1609 | int select_mask, int clear_mask, | |
4dcd4def DS |
1610 | struct pattern_list *pl, |
1611 | int show_progress) | |
9037026d | 1612 | { |
fc2b6214 | 1613 | static struct strbuf prefix = STRBUF_INIT; |
e6152e35 JH |
1614 | char label[100]; |
1615 | int rval; | |
fc2b6214 AP |
1616 | |
1617 | strbuf_reset(&prefix); | |
4dcd4def DS |
1618 | if (show_progress) |
1619 | istate->progress = start_delayed_progress( | |
1620 | _("Updating index flags"), | |
1621 | istate->cache_nr); | |
fc2b6214 | 1622 | |
e6152e35 JH |
1623 | xsnprintf(label, sizeof(label), "clear_ce_flags(0x%08lx,0x%08lx)", |
1624 | (unsigned long)select_mask, (unsigned long)clear_mask); | |
1625 | trace2_region_enter("unpack_trees", label, the_repository); | |
1626 | rval = clear_ce_flags_1(istate, | |
27c82fb3 NTND |
1627 | istate->cache, |
1628 | istate->cache_nr, | |
fc2b6214 | 1629 | &prefix, |
9037026d | 1630 | select_mask, clear_mask, |
4dcd4def | 1631 | pl, 0, 0); |
e6152e35 JH |
1632 | trace2_region_leave("unpack_trees", label, the_repository); |
1633 | ||
4dcd4def | 1634 | stop_progress(&istate->progress); |
e6152e35 | 1635 | return rval; |
9037026d NTND |
1636 | } |
1637 | ||
2431afbf NTND |
1638 | /* |
1639 | * Set/Clear CE_NEW_SKIP_WORKTREE according to $GIT_DIR/info/sparse-checkout | |
1640 | */ | |
caa3d554 | 1641 | static void mark_new_skip_worktree(struct pattern_list *pl, |
86016ec3 | 1642 | struct index_state *istate, |
4dcd4def DS |
1643 | int select_flag, int skip_wt_flag, |
1644 | int show_progress) | |
2431afbf NTND |
1645 | { |
1646 | int i; | |
1647 | ||
9037026d NTND |
1648 | /* |
1649 | * 1. Pretend the narrowest worktree: only unmerged entries | |
1650 | * are checked out | |
1651 | */ | |
86016ec3 NTND |
1652 | for (i = 0; i < istate->cache_nr; i++) { |
1653 | struct cache_entry *ce = istate->cache[i]; | |
2431afbf NTND |
1654 | |
1655 | if (select_flag && !(ce->ce_flags & select_flag)) | |
1656 | continue; | |
1657 | ||
b33fdfc3 | 1658 | if (!ce_stage(ce) && !(ce->ce_flags & CE_CONFLICTED)) |
2431afbf NTND |
1659 | ce->ce_flags |= skip_wt_flag; |
1660 | else | |
1661 | ce->ce_flags &= ~skip_wt_flag; | |
1662 | } | |
9037026d NTND |
1663 | |
1664 | /* | |
1665 | * 2. Widen worktree according to sparse-checkout file. | |
1666 | * Matched entries will have skip_wt_flag cleared (i.e. "in") | |
1667 | */ | |
4dcd4def | 1668 | clear_ce_flags(istate, select_flag, skip_wt_flag, pl, show_progress); |
2431afbf NTND |
1669 | } |
1670 | ||
30e89c12 EN |
1671 | static void populate_from_existing_patterns(struct unpack_trees_options *o, |
1672 | struct pattern_list *pl) | |
1673 | { | |
dd23022a | 1674 | if (get_sparse_checkout_patterns(pl) < 0) |
30e89c12 EN |
1675 | o->skip_sparse_checkout = 1; |
1676 | else | |
1677 | o->pl = pl; | |
30e89c12 EN |
1678 | } |
1679 | ||
1680 | ||
eb9ae4b5 RS |
1681 | static int verify_absent(const struct cache_entry *, |
1682 | enum unpack_trees_error_types, | |
1683 | struct unpack_trees_options *); | |
2e2b887d JH |
1684 | /* |
1685 | * N-way merge "len" trees. Returns 0 on success, -1 on failure to manipulate the | |
1686 | * resulting index, -2 on failure to reflect the changes to the work tree. | |
2431afbf NTND |
1687 | * |
1688 | * CE_ADDED, CE_UNPACKED and CE_NEW_SKIP_WORKTREE are used internally | |
2e2b887d | 1689 | */ |
01904572 LT |
1690 | int unpack_trees(unsigned len, struct tree_desc *t, struct unpack_trees_options *o) |
1691 | { | |
6863df35 | 1692 | struct repository *repo = the_repository; |
e800ec9d | 1693 | int i, ret; |
0fb1eaa8 | 1694 | static struct cache_entry *dfc; |
caa3d554 | 1695 | struct pattern_list pl; |
fa0bde45 | 1696 | int free_pattern_list = 0; |
c42e0b64 | 1697 | struct dir_struct dir = DIR_INIT; |
16da134b | 1698 | |
480d3d6b EN |
1699 | if (o->reset == UNPACK_RESET_INVALID) |
1700 | BUG("o->reset had a value of 1; should be UNPACK_TREES_*_UNTRACKED"); | |
16da134b | 1701 | |
ca885a4f JH |
1702 | if (len > MAX_UNPACK_TREES) |
1703 | die("unpack_trees takes at most %d trees", MAX_UNPACK_TREES); | |
c42e0b64 EN |
1704 | if (o->dir) |
1705 | BUG("o->dir is for internal use only"); | |
16da134b | 1706 | |
0d1ed596 | 1707 | trace_performance_enter(); |
c338898a DS |
1708 | trace2_region_enter("unpack_trees", "unpack_trees", the_repository); |
1709 | ||
6863df35 DS |
1710 | prepare_repo_settings(repo); |
1711 | if (repo->settings.command_requires_full_index) { | |
1712 | ensure_full_index(o->src_index); | |
1713 | ensure_full_index(o->dst_index); | |
1714 | } | |
1715 | ||
480d3d6b EN |
1716 | if (o->reset == UNPACK_RESET_OVERWRITE_UNTRACKED && |
1717 | o->preserve_ignored) | |
1718 | BUG("UNPACK_RESET_OVERWRITE_UNTRACKED incompatible with preserved ignored files"); | |
1719 | ||
04988c8d | 1720 | if (!o->preserve_ignored) { |
c42e0b64 | 1721 | o->dir = &dir; |
04988c8d EN |
1722 | o->dir->flags |= DIR_SHOW_IGNORED; |
1723 | setup_standard_excludes(o->dir); | |
1724 | } | |
1725 | ||
08aefc9e NTND |
1726 | if (!core_apply_sparse_checkout || !o->update) |
1727 | o->skip_sparse_checkout = 1; | |
e091228e | 1728 | if (!o->skip_sparse_checkout && !o->pl) { |
30e89c12 | 1729 | memset(&pl, 0, sizeof(pl)); |
fa0bde45 | 1730 | free_pattern_list = 1; |
30e89c12 | 1731 | populate_from_existing_patterns(o, &pl); |
08aefc9e NTND |
1732 | } |
1733 | ||
34110cd4 | 1734 | memset(&o->result, 0, sizeof(o->result)); |
913e0e99 | 1735 | o->result.initialized = 1; |
da165f47 JH |
1736 | o->result.timestamp.sec = o->src_index->timestamp.sec; |
1737 | o->result.timestamp.nsec = o->src_index->timestamp.nsec; | |
9170c7ab | 1738 | o->result.version = o->src_index->version; |
7db11830 EN |
1739 | if (!o->src_index->split_index) { |
1740 | o->result.split_index = NULL; | |
1741 | } else if (o->src_index == o->dst_index) { | |
1742 | /* | |
1743 | * o->dst_index (and thus o->src_index) will be discarded | |
1744 | * and overwritten with o->result at the end of this function, | |
1745 | * so just use src_index's split_index to avoid having to | |
1746 | * create a new one. | |
1747 | */ | |
1748 | o->result.split_index = o->src_index->split_index; | |
5fc2fc8f | 1749 | o->result.split_index->refcount++; |
7db11830 EN |
1750 | } else { |
1751 | o->result.split_index = init_split_index(&o->result); | |
1752 | } | |
75691ea3 | 1753 | oidcpy(&o->result.oid, &o->src_index->oid); |
16da134b | 1754 | o->merge_size = len; |
da165f47 | 1755 | mark_all_ce_unused(o->src_index); |
0fb1eaa8 | 1756 | |
3dfd3059 JS |
1757 | o->result.fsmonitor_last_update = |
1758 | xstrdup_or_null(o->src_index->fsmonitor_last_update); | |
679f2f9f | 1759 | |
2431afbf NTND |
1760 | /* |
1761 | * Sparse checkout loop #1: set NEW_SKIP_WORKTREE on existing entries | |
1762 | */ | |
1763 | if (!o->skip_sparse_checkout) | |
4dcd4def DS |
1764 | mark_new_skip_worktree(o->pl, o->src_index, 0, |
1765 | CE_NEW_SKIP_WORKTREE, o->verbose_update); | |
2431afbf | 1766 | |
0fb1eaa8 | 1767 | if (!dfc) |
13494ed1 | 1768 | dfc = xcalloc(1, cache_entry_size(0)); |
0fb1eaa8 | 1769 | o->df_conflict_entry = dfc; |
16da134b JS |
1770 | |
1771 | if (len) { | |
01904572 LT |
1772 | const char *prefix = o->prefix ? o->prefix : ""; |
1773 | struct traverse_info info; | |
1774 | ||
1775 | setup_traverse_info(&info, prefix); | |
1776 | info.fn = unpack_callback; | |
1777 | info.data = o; | |
e6c111b4 | 1778 | info.show_all_errors = o->show_all_errors; |
40e37256 | 1779 | info.pathspec = o->pathspec; |
01904572 | 1780 | |
da165f47 JH |
1781 | if (o->prefix) { |
1782 | /* | |
1783 | * Unpack existing index entries that sort before the | |
1784 | * prefix the tree is spliced into. Note that o->merge | |
1785 | * is always true in this case. | |
1786 | */ | |
1787 | while (1) { | |
1788 | struct cache_entry *ce = next_cache_entry(o); | |
1789 | if (!ce) | |
1790 | break; | |
1791 | if (ce_in_traverse_path(ce, &info)) | |
1792 | break; | |
1793 | if (unpack_index_entry(ce, o) < 0) | |
1794 | goto return_failed; | |
1795 | } | |
08aefc9e | 1796 | } |
da165f47 | 1797 | |
0d1ed596 | 1798 | trace_performance_enter(); |
c338898a | 1799 | trace2_region_enter("unpack_trees", "traverse_trees", the_repository); |
67022e02 | 1800 | ret = traverse_trees(o->src_index, len, t, &info); |
c338898a | 1801 | trace2_region_leave("unpack_trees", "traverse_trees", the_repository); |
0d1ed596 NTND |
1802 | trace_performance_leave("traverse_trees"); |
1803 | if (ret < 0) | |
da165f47 | 1804 | goto return_failed; |
16da134b JS |
1805 | } |
1806 | ||
01904572 LT |
1807 | /* Any left-over entries in the index? */ |
1808 | if (o->merge) { | |
da165f47 JH |
1809 | while (1) { |
1810 | struct cache_entry *ce = next_cache_entry(o); | |
1811 | if (!ce) | |
1812 | break; | |
01904572 | 1813 | if (unpack_index_entry(ce, o) < 0) |
da165f47 | 1814 | goto return_failed; |
17e46426 | 1815 | } |
17e46426 | 1816 | } |
da165f47 | 1817 | mark_all_ce_unused(o->src_index); |
16da134b | 1818 | |
08aefc9e NTND |
1819 | if (o->trivial_merges_only && o->nontrivial_merge) { |
1820 | ret = unpack_failed(o, "Merge requires file-level merging"); | |
1821 | goto done; | |
1822 | } | |
01904572 | 1823 | |
e800ec9d | 1824 | if (!o->skip_sparse_checkout) { |
2431afbf NTND |
1825 | /* |
1826 | * Sparse checkout loop #2: set NEW_SKIP_WORKTREE on entries not in loop #1 | |
031ba55b | 1827 | * If they will have NEW_SKIP_WORKTREE, also set CE_SKIP_WORKTREE |
2431afbf NTND |
1828 | * so apply_sparse_checkout() won't attempt to remove it from worktree |
1829 | */ | |
4dcd4def DS |
1830 | mark_new_skip_worktree(o->pl, &o->result, |
1831 | CE_ADDED, CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE, | |
1832 | o->verbose_update); | |
2431afbf | 1833 | |
17d26a4d | 1834 | ret = 0; |
2431afbf | 1835 | for (i = 0; i < o->result.cache_nr; i++) { |
e800ec9d NTND |
1836 | struct cache_entry *ce = o->result.cache[i]; |
1837 | ||
2431afbf NTND |
1838 | /* |
1839 | * Entries marked with CE_ADDED in merged_entry() do not have | |
1840 | * verify_absent() check (the check is effectively disabled | |
1841 | * because CE_NEW_SKIP_WORKTREE is set unconditionally). | |
1842 | * | |
1843 | * Do the real check now because we have had | |
1844 | * correct CE_NEW_SKIP_WORKTREE | |
1845 | */ | |
1846 | if (ce->ce_flags & CE_ADDED && | |
681c637b EN |
1847 | verify_absent(ce, WARNING_SPARSE_ORPHANED_NOT_OVERWRITTEN, o)) |
1848 | ret = 1; | |
1849 | ||
1850 | if (apply_sparse_checkout(&o->result, ce, o)) | |
1851 | ret = 1; | |
9e1afb16 | 1852 | } |
681c637b EN |
1853 | if (ret == 1) { |
1854 | /* | |
1855 | * Inability to sparsify or de-sparsify individual | |
1856 | * paths is not an error, but just a warning. | |
1857 | */ | |
1858 | if (o->show_all_errors) | |
1859 | display_warning_msgs(o); | |
1860 | ret = 0; | |
1861 | } | |
e800ec9d | 1862 | } |
01904572 | 1863 | |
b0a5a12a | 1864 | ret = check_updates(o, &o->result) ? (-2) : 0; |
e28f7641 | 1865 | if (o->dst_index) { |
836ef2b6 | 1866 | move_index_extensions(&o->result, o->src_index); |
52fca218 | 1867 | if (!ret) { |
4592e608 | 1868 | if (git_env_bool("GIT_TEST_CHECK_CACHE_TREE", 0)) |
c207e9e1 | 1869 | cache_tree_verify(the_repository, &o->result); |
52fca218 BD |
1870 | if (!cache_tree_fully_valid(o->result.cache_tree)) |
1871 | cache_tree_update(&o->result, | |
1872 | WRITE_TREE_SILENT | | |
1873 | WRITE_TREE_REPAIR); | |
1874 | } | |
1956ecd0 BP |
1875 | |
1876 | o->result.updated_workdir = 1; | |
e28f7641 | 1877 | discard_index(o->dst_index); |
34110cd4 | 1878 | *o->dst_index = o->result; |
a16cc8b2 JH |
1879 | } else { |
1880 | discard_index(&o->result); | |
e28f7641 | 1881 | } |
7db11830 | 1882 | o->src_index = NULL; |
08aefc9e NTND |
1883 | |
1884 | done: | |
fa0bde45 | 1885 | if (free_pattern_list) |
e091228e | 1886 | clear_pattern_list(&pl); |
04988c8d EN |
1887 | if (o->dir) { |
1888 | dir_clear(o->dir); | |
c42e0b64 | 1889 | o->dir = NULL; |
04988c8d | 1890 | } |
c338898a | 1891 | trace2_region_leave("unpack_trees", "unpack_trees", the_repository); |
fa0bde45 | 1892 | trace_performance_leave("unpack_trees"); |
2e2b887d | 1893 | return ret; |
da165f47 JH |
1894 | |
1895 | return_failed: | |
e6c111b4 MM |
1896 | if (o->show_all_errors) |
1897 | display_error_msgs(o); | |
da165f47 | 1898 | mark_all_ce_unused(o->src_index); |
026680f8 | 1899 | ret = unpack_failed(o, NULL); |
b4194828 JH |
1900 | if (o->exiting_early) |
1901 | ret = 0; | |
026680f8 | 1902 | goto done; |
16da134b | 1903 | } |
076b0adc | 1904 | |
7af7a258 EN |
1905 | /* |
1906 | * Update SKIP_WORKTREE bits according to sparsity patterns, and update | |
1907 | * working directory to match. | |
1908 | * | |
1909 | * CE_NEW_SKIP_WORKTREE is used internally. | |
1910 | */ | |
1911 | enum update_sparsity_result update_sparsity(struct unpack_trees_options *o) | |
1912 | { | |
1913 | enum update_sparsity_result ret = UPDATE_SPARSITY_SUCCESS; | |
1914 | struct pattern_list pl; | |
ace224ac | 1915 | int i; |
7af7a258 EN |
1916 | unsigned old_show_all_errors; |
1917 | int free_pattern_list = 0; | |
1918 | ||
1919 | old_show_all_errors = o->show_all_errors; | |
1920 | o->show_all_errors = 1; | |
1921 | ||
1922 | /* Sanity checks */ | |
1923 | if (!o->update || o->index_only || o->skip_sparse_checkout) | |
1924 | BUG("update_sparsity() is for reflecting sparsity patterns in working directory"); | |
1925 | if (o->src_index != o->dst_index || o->fn) | |
1926 | BUG("update_sparsity() called wrong"); | |
1927 | ||
1928 | trace_performance_enter(); | |
1929 | ||
1930 | /* If we weren't given patterns, use the recorded ones */ | |
1931 | if (!o->pl) { | |
1932 | memset(&pl, 0, sizeof(pl)); | |
1933 | free_pattern_list = 1; | |
1934 | populate_from_existing_patterns(o, &pl); | |
1935 | if (o->skip_sparse_checkout) | |
1936 | goto skip_sparse_checkout; | |
1937 | } | |
1938 | ||
1939 | /* Set NEW_SKIP_WORKTREE on existing entries. */ | |
1940 | mark_all_ce_unused(o->src_index); | |
1941 | mark_new_skip_worktree(o->pl, o->src_index, 0, | |
1942 | CE_NEW_SKIP_WORKTREE, o->verbose_update); | |
1943 | ||
1944 | /* Then loop over entries and update/remove as needed */ | |
1945 | ret = UPDATE_SPARSITY_SUCCESS; | |
7af7a258 EN |
1946 | for (i = 0; i < o->src_index->cache_nr; i++) { |
1947 | struct cache_entry *ce = o->src_index->cache[i]; | |
1948 | ||
ebb568b9 EN |
1949 | |
1950 | if (ce_stage(ce)) { | |
1951 | /* -1 because for loop will increment by 1 */ | |
1952 | i += warn_conflicted_path(o->src_index, i, o) - 1; | |
1953 | ret = UPDATE_SPARSITY_WARNINGS; | |
1954 | continue; | |
1955 | } | |
1956 | ||
7af7a258 EN |
1957 | if (apply_sparse_checkout(o->src_index, ce, o)) |
1958 | ret = UPDATE_SPARSITY_WARNINGS; | |
7af7a258 EN |
1959 | } |
1960 | ||
1961 | skip_sparse_checkout: | |
1962 | if (check_updates(o, o->src_index)) | |
1963 | ret = UPDATE_SPARSITY_WORKTREE_UPDATE_FAILURES; | |
1964 | ||
6271d77c | 1965 | display_warning_msgs(o); |
7af7a258 EN |
1966 | o->show_all_errors = old_show_all_errors; |
1967 | if (free_pattern_list) | |
1968 | clear_pattern_list(&pl); | |
1969 | trace_performance_leave("update_sparsity"); | |
1970 | return ret; | |
1971 | } | |
1972 | ||
076b0adc JS |
1973 | /* Here come the merge functions */ |
1974 | ||
eb9ae4b5 RS |
1975 | static int reject_merge(const struct cache_entry *ce, |
1976 | struct unpack_trees_options *o) | |
076b0adc | 1977 | { |
191e9d2c | 1978 | return add_rejected_path(o, ERROR_WOULD_OVERWRITE, ce->name); |
076b0adc JS |
1979 | } |
1980 | ||
eb9ae4b5 | 1981 | static int same(const struct cache_entry *a, const struct cache_entry *b) |
076b0adc JS |
1982 | { |
1983 | if (!!a != !!b) | |
1984 | return 0; | |
1985 | if (!a && !b) | |
1986 | return 1; | |
e11d7b59 JH |
1987 | if ((a->ce_flags | b->ce_flags) & CE_CONFLICTED) |
1988 | return 0; | |
076b0adc | 1989 | return a->ce_mode == b->ce_mode && |
4a7e27e9 | 1990 | oideq(&a->oid, &b->oid); |
076b0adc JS |
1991 | } |
1992 | ||
1993 | ||
1994 | /* | |
1995 | * When a CE gets turned into an unmerged entry, we | |
1996 | * want it to be up-to-date | |
1997 | */ | |
eb9ae4b5 RS |
1998 | static int verify_uptodate_1(const struct cache_entry *ce, |
1999 | struct unpack_trees_options *o, | |
2000 | enum unpack_trees_error_types error_type) | |
076b0adc JS |
2001 | { |
2002 | struct stat st; | |
2003 | ||
d5b66299 NTND |
2004 | if (o->index_only) |
2005 | return 0; | |
2006 | ||
2007 | /* | |
2008 | * CE_VALID and CE_SKIP_WORKTREE cheat, we better check again | |
2009 | * if this entry is truly up-to-date because this file may be | |
2010 | * overwritten. | |
2011 | */ | |
2012 | if ((ce->ce_flags & CE_VALID) || ce_skip_worktree(ce)) | |
2013 | ; /* keep checking */ | |
2014 | else if (o->reset || ce_uptodate(ce)) | |
203a2fe1 | 2015 | return 0; |
076b0adc JS |
2016 | |
2017 | if (!lstat(ce->name, &st)) { | |
d5b66299 NTND |
2018 | int flags = CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE; |
2019 | unsigned changed = ie_match_stat(o->src_index, ce, &st, flags); | |
a7bc845a SB |
2020 | |
2021 | if (submodule_from_ce(ce)) { | |
2022 | int r = check_submodule_move_head(ce, | |
2023 | "HEAD", oid_to_hex(&ce->oid), o); | |
2024 | if (r) | |
191e9d2c | 2025 | return add_rejected_path(o, error_type, ce->name); |
a7bc845a SB |
2026 | return 0; |
2027 | } | |
2028 | ||
076b0adc | 2029 | if (!changed) |
203a2fe1 | 2030 | return 0; |
936492d3 | 2031 | /* |
a7bc845a SB |
2032 | * Historic default policy was to allow submodule to be out |
2033 | * of sync wrt the superproject index. If the submodule was | |
2034 | * not considered interesting above, we don't care here. | |
936492d3 | 2035 | */ |
7a51ed66 | 2036 | if (S_ISGITLINK(ce->ce_mode)) |
203a2fe1 | 2037 | return 0; |
a7bc845a | 2038 | |
076b0adc JS |
2039 | errno = 0; |
2040 | } | |
076b0adc | 2041 | if (errno == ENOENT) |
203a2fe1 | 2042 | return 0; |
191e9d2c | 2043 | return add_rejected_path(o, error_type, ce->name); |
35a5aa79 NTND |
2044 | } |
2045 | ||
64b1abe9 EN |
2046 | int verify_uptodate(const struct cache_entry *ce, |
2047 | struct unpack_trees_options *o) | |
35a5aa79 | 2048 | { |
2431afbf | 2049 | if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE)) |
f1f523ea | 2050 | return 0; |
08402b04 | 2051 | return verify_uptodate_1(ce, o, ERROR_NOT_UPTODATE_FILE); |
076b0adc JS |
2052 | } |
2053 | ||
eb9ae4b5 | 2054 | static int verify_uptodate_sparse(const struct cache_entry *ce, |
e800ec9d NTND |
2055 | struct unpack_trees_options *o) |
2056 | { | |
1ac83f42 | 2057 | return verify_uptodate_1(ce, o, WARNING_SPARSE_NOT_UPTODATE_FILE); |
076b0adc JS |
2058 | } |
2059 | ||
383480ba NTND |
2060 | /* |
2061 | * TODO: We should actually invalidate o->result, not src_index [1]. | |
2062 | * But since cache tree and untracked cache both are not copied to | |
2063 | * o->result until unpacking is complete, we invalidate them on | |
2064 | * src_index instead with the assumption that they will be copied to | |
2065 | * dst_index at the end. | |
2066 | * | |
2067 | * [1] src_index->cache_tree is also used in unpack_callback() so if | |
2068 | * we invalidate o->result, we need to update it to use | |
2069 | * o->result.cache_tree as well. | |
2070 | */ | |
eb9ae4b5 RS |
2071 | static void invalidate_ce_path(const struct cache_entry *ce, |
2072 | struct unpack_trees_options *o) | |
076b0adc | 2073 | { |
e931371a NTND |
2074 | if (!ce) |
2075 | return; | |
2076 | cache_tree_invalidate_path(o->src_index, ce->name); | |
0cacebf0 | 2077 | untracked_cache_invalidate_path(o->src_index, ce->name, 1); |
076b0adc JS |
2078 | } |
2079 | ||
0cf73755 SV |
2080 | /* |
2081 | * Check that checking out ce->sha1 in subdir ce->name is not | |
2082 | * going to overwrite any working files. | |
0cf73755 | 2083 | */ |
d6b12300 SB |
2084 | static int verify_clean_submodule(const char *old_sha1, |
2085 | const struct cache_entry *ce, | |
eb9ae4b5 | 2086 | struct unpack_trees_options *o) |
0cf73755 | 2087 | { |
a7bc845a SB |
2088 | if (!submodule_from_ce(ce)) |
2089 | return 0; | |
2090 | ||
2091 | return check_submodule_move_head(ce, old_sha1, | |
2092 | oid_to_hex(&ce->oid), o); | |
0cf73755 SV |
2093 | } |
2094 | ||
eb9ae4b5 | 2095 | static int verify_clean_subdirectory(const struct cache_entry *ce, |
eb9ae4b5 | 2096 | struct unpack_trees_options *o) |
c8193534 JH |
2097 | { |
2098 | /* | |
0cf73755 | 2099 | * we are about to extract "ce->name"; we would not want to lose |
c8193534 JH |
2100 | * anything in the existing directory there. |
2101 | */ | |
2102 | int namelen; | |
7b9e3ce0 | 2103 | int i; |
c8193534 JH |
2104 | struct dir_struct d; |
2105 | char *pathbuf; | |
2106 | int cnt = 0; | |
0cf73755 | 2107 | |
d6b12300 | 2108 | if (S_ISGITLINK(ce->ce_mode)) { |
1053fe82 | 2109 | struct object_id oid; |
a98e6101 | 2110 | int sub_head = resolve_gitlink_ref(ce->name, "HEAD", &oid); |
d6b12300 SB |
2111 | /* |
2112 | * If we are not going to update the submodule, then | |
0cf73755 SV |
2113 | * we don't care. |
2114 | */ | |
4a7e27e9 | 2115 | if (!sub_head && oideq(&oid, &ce->oid)) |
0cf73755 | 2116 | return 0; |
1053fe82 | 2117 | return verify_clean_submodule(sub_head ? NULL : oid_to_hex(&oid), |
df351c6e | 2118 | ce, o); |
0cf73755 | 2119 | } |
c8193534 JH |
2120 | |
2121 | /* | |
2122 | * First let's make sure we do not have a local modification | |
2123 | * in that directory. | |
2124 | */ | |
68c4f6a5 | 2125 | namelen = ce_namelen(ce); |
da165f47 JH |
2126 | for (i = locate_in_src_index(ce, o); |
2127 | i < o->src_index->cache_nr; | |
2128 | i++) { | |
837e5fe9 CB |
2129 | struct cache_entry *ce2 = o->src_index->cache[i]; |
2130 | int len = ce_namelen(ce2); | |
c8193534 | 2131 | if (len < namelen || |
837e5fe9 CB |
2132 | strncmp(ce->name, ce2->name, namelen) || |
2133 | ce2->name[namelen] != '/') | |
c8193534 JH |
2134 | break; |
2135 | /* | |
da165f47 JH |
2136 | * ce2->name is an entry in the subdirectory to be |
2137 | * removed. | |
c8193534 | 2138 | */ |
837e5fe9 CB |
2139 | if (!ce_stage(ce2)) { |
2140 | if (verify_uptodate(ce2, o)) | |
203a2fe1 | 2141 | return -1; |
837e5fe9 | 2142 | add_entry(o, ce2, CE_REMOVE, 0); |
5697ca9a | 2143 | invalidate_ce_path(ce, o); |
da165f47 | 2144 | mark_ce_used(ce2, o); |
c8193534 JH |
2145 | } |
2146 | cnt++; | |
2147 | } | |
2148 | ||
2149 | /* | |
2150 | * Then we need to make sure that we do not lose a locally | |
2151 | * present file that is not ignored. | |
2152 | */ | |
75faa45a | 2153 | pathbuf = xstrfmt("%.*s/", namelen, ce->name); |
c8193534 JH |
2154 | |
2155 | memset(&d, 0, sizeof(d)); | |
2156 | if (o->dir) | |
2157 | d.exclude_per_dir = o->dir->exclude_per_dir; | |
c7f3259d | 2158 | i = read_directory(&d, o->src_index, pathbuf, namelen+1, NULL); |
e5a917fc ÆAB |
2159 | dir_clear(&d); |
2160 | free(pathbuf); | |
c8193534 | 2161 | if (i) |
191e9d2c | 2162 | return add_rejected_path(o, ERROR_NOT_UPTODATE_DIR, ce->name); |
c8193534 JH |
2163 | return cnt; |
2164 | } | |
2165 | ||
32260ad5 LT |
2166 | /* |
2167 | * This gets called when there was no index entry for the tree entry 'dst', | |
2168 | * but we found a file in the working tree that 'lstat()' said was fine, | |
2169 | * and we're on a case-insensitive filesystem. | |
2170 | * | |
2171 | * See if we can find a case-insensitive match in the index that also | |
2172 | * matches the stat information, and assume it's that other file! | |
2173 | */ | |
a9307f5a | 2174 | static int icase_exists(struct unpack_trees_options *o, const char *name, int len, struct stat *st) |
32260ad5 | 2175 | { |
9c5e6c80 | 2176 | const struct cache_entry *src; |
32260ad5 | 2177 | |
ebbd7439 | 2178 | src = index_file_exists(o->src_index, name, len, 1); |
56cac48c | 2179 | return src && !ie_match_stat(o->src_index, src, st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE); |
32260ad5 LT |
2180 | } |
2181 | ||
1fdd51aa EN |
2182 | enum absent_checking_type { |
2183 | COMPLETELY_ABSENT, | |
2184 | ABSENT_ANY_DIRECTORY | |
2185 | }; | |
2186 | ||
a9307f5a | 2187 | static int check_ok_to_remove(const char *name, int len, int dtype, |
eb9ae4b5 | 2188 | const struct cache_entry *ce, struct stat *st, |
a9307f5a | 2189 | enum unpack_trees_error_types error_type, |
1fdd51aa | 2190 | enum absent_checking_type absent_type, |
a9307f5a CB |
2191 | struct unpack_trees_options *o) |
2192 | { | |
9c5e6c80 | 2193 | const struct cache_entry *result; |
a9307f5a CB |
2194 | |
2195 | /* | |
2196 | * It may be that the 'lstat()' succeeded even though | |
2197 | * target 'ce' was absent, because there is an old | |
2198 | * entry that is different only in case.. | |
2199 | * | |
2200 | * Ignore that lstat() if it matches. | |
2201 | */ | |
2202 | if (ignore_case && icase_exists(o, name, len, st)) | |
2203 | return 0; | |
2204 | ||
589570db | 2205 | if (o->dir && |
c7f3259d | 2206 | is_excluded(o->dir, o->src_index, name, &dtype)) |
a9307f5a CB |
2207 | /* |
2208 | * ce->name is explicitly excluded, so it is Ok to | |
2209 | * overwrite it. | |
2210 | */ | |
2211 | return 0; | |
2212 | if (S_ISDIR(st->st_mode)) { | |
2213 | /* | |
2214 | * We are checking out path "foo" and | |
2215 | * found "foo/." in the working tree. | |
2216 | * This is tricky -- if we have modified | |
2217 | * files that are in "foo/" we would lose | |
2218 | * them. | |
2219 | */ | |
df351c6e | 2220 | if (verify_clean_subdirectory(ce, o) < 0) |
a9307f5a CB |
2221 | return -1; |
2222 | return 0; | |
2223 | } | |
2224 | ||
1fdd51aa EN |
2225 | /* If we only care about directories, then we can remove */ |
2226 | if (absent_type == ABSENT_ANY_DIRECTORY) | |
2227 | return 0; | |
2228 | ||
a9307f5a CB |
2229 | /* |
2230 | * The previous round may already have decided to | |
2231 | * delete this path, which is in a subdirectory that | |
2232 | * is being replaced with a blob. | |
2233 | */ | |
ebbd7439 | 2234 | result = index_file_exists(&o->result, name, len, 0); |
a9307f5a CB |
2235 | if (result) { |
2236 | if (result->ce_flags & CE_REMOVE) | |
2237 | return 0; | |
2238 | } | |
2239 | ||
191e9d2c | 2240 | return add_rejected_path(o, error_type, name); |
a9307f5a CB |
2241 | } |
2242 | ||
076b0adc JS |
2243 | /* |
2244 | * We do not want to remove or overwrite a working tree file that | |
f8a9d428 | 2245 | * is not tracked, unless it is ignored. |
076b0adc | 2246 | */ |
eb9ae4b5 RS |
2247 | static int verify_absent_1(const struct cache_entry *ce, |
2248 | enum unpack_trees_error_types error_type, | |
1fdd51aa | 2249 | enum absent_checking_type absent_type, |
eb9ae4b5 | 2250 | struct unpack_trees_options *o) |
076b0adc | 2251 | { |
f66caaf9 | 2252 | int len; |
076b0adc JS |
2253 | struct stat st; |
2254 | ||
480d3d6b EN |
2255 | if (o->index_only || !o->update || |
2256 | o->reset == UNPACK_RESET_OVERWRITE_UNTRACKED) | |
203a2fe1 | 2257 | return 0; |
c8193534 | 2258 | |
fab78a0c | 2259 | len = check_leading_path(ce->name, ce_namelen(ce), 0); |
f66caaf9 | 2260 | if (!len) |
203a2fe1 | 2261 | return 0; |
f66caaf9 | 2262 | else if (len > 0) { |
f514ef97 JK |
2263 | char *path; |
2264 | int ret; | |
2265 | ||
2266 | path = xmemdupz(ce->name, len); | |
a93e5301 | 2267 | if (lstat(path, &st)) |
43c728e2 | 2268 | ret = error_errno("cannot stat '%s'", path); |
a7bc845a SB |
2269 | else { |
2270 | if (submodule_from_ce(ce)) | |
2271 | ret = check_submodule_move_head(ce, | |
2272 | oid_to_hex(&ce->oid), | |
2273 | NULL, o); | |
2274 | else | |
2275 | ret = check_ok_to_remove(path, len, DT_UNKNOWN, NULL, | |
1fdd51aa EN |
2276 | &st, error_type, |
2277 | absent_type, o); | |
a7bc845a | 2278 | } |
f514ef97 JK |
2279 | free(path); |
2280 | return ret; | |
92fda79e JN |
2281 | } else if (lstat(ce->name, &st)) { |
2282 | if (errno != ENOENT) | |
43c728e2 | 2283 | return error_errno("cannot stat '%s'", ce->name); |
92fda79e JN |
2284 | return 0; |
2285 | } else { | |
a7bc845a SB |
2286 | if (submodule_from_ce(ce)) |
2287 | return check_submodule_move_head(ce, oid_to_hex(&ce->oid), | |
2288 | NULL, o); | |
2289 | ||
a9307f5a | 2290 | return check_ok_to_remove(ce->name, ce_namelen(ce), |
92fda79e | 2291 | ce_to_dtype(ce), ce, &st, |
1fdd51aa | 2292 | error_type, absent_type, o); |
92fda79e | 2293 | } |
076b0adc | 2294 | } |
a9307f5a | 2295 | |
eb9ae4b5 | 2296 | static int verify_absent(const struct cache_entry *ce, |
08402b04 | 2297 | enum unpack_trees_error_types error_type, |
35a5aa79 NTND |
2298 | struct unpack_trees_options *o) |
2299 | { | |
2431afbf | 2300 | if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE)) |
f1f523ea | 2301 | return 0; |
1fdd51aa EN |
2302 | return verify_absent_1(ce, error_type, COMPLETELY_ABSENT, o); |
2303 | } | |
2304 | ||
2305 | static int verify_absent_if_directory(const struct cache_entry *ce, | |
2306 | enum unpack_trees_error_types error_type, | |
2307 | struct unpack_trees_options *o) | |
2308 | { | |
2309 | if (!o->skip_sparse_checkout && (ce->ce_flags & CE_NEW_SKIP_WORKTREE)) | |
2310 | return 0; | |
2311 | return verify_absent_1(ce, error_type, ABSENT_ANY_DIRECTORY, o); | |
35a5aa79 | 2312 | } |
076b0adc | 2313 | |
eb9ae4b5 RS |
2314 | static int verify_absent_sparse(const struct cache_entry *ce, |
2315 | enum unpack_trees_error_types error_type, | |
2316 | struct unpack_trees_options *o) | |
e800ec9d | 2317 | { |
1fdd51aa | 2318 | return verify_absent_1(ce, error_type, COMPLETELY_ABSENT, o); |
e800ec9d | 2319 | } |
076b0adc | 2320 | |
f2fa3542 | 2321 | static int merged_entry(const struct cache_entry *ce, |
eb9ae4b5 | 2322 | const struct cache_entry *old, |
f2fa3542 | 2323 | struct unpack_trees_options *o) |
076b0adc | 2324 | { |
7f8ab8dc | 2325 | int update = CE_UPDATE; |
8e72d675 | 2326 | struct cache_entry *merge = dup_cache_entry(ce, &o->result); |
7f8ab8dc | 2327 | |
e11d7b59 | 2328 | if (!old) { |
2431afbf NTND |
2329 | /* |
2330 | * New index entries. In sparse checkout, the following | |
2331 | * verify_absent() will be delayed until after | |
2332 | * traverse_trees() finishes in unpack_trees(), then: | |
2333 | * | |
2334 | * - CE_NEW_SKIP_WORKTREE will be computed correctly | |
2335 | * - verify_absent() be called again, this time with | |
2336 | * correct CE_NEW_SKIP_WORKTREE | |
2337 | * | |
2338 | * verify_absent() call here does nothing in sparse | |
2339 | * checkout (i.e. o->skip_sparse_checkout == 0) | |
2340 | */ | |
2341 | update |= CE_ADDED; | |
2342 | merge->ce_flags |= CE_NEW_SKIP_WORKTREE; | |
2343 | ||
f2fa3542 RS |
2344 | if (verify_absent(merge, |
2345 | ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) { | |
a849735b | 2346 | discard_cache_entry(merge); |
e11d7b59 | 2347 | return -1; |
f2fa3542 | 2348 | } |
e11d7b59 | 2349 | invalidate_ce_path(merge, o); |
a7bc845a | 2350 | |
e84704f1 | 2351 | if (submodule_from_ce(ce) && file_exists(ce->name)) { |
a7bc845a SB |
2352 | int ret = check_submodule_move_head(ce, NULL, |
2353 | oid_to_hex(&ce->oid), | |
2354 | o); | |
2355 | if (ret) | |
2356 | return ret; | |
2357 | } | |
2358 | ||
e11d7b59 | 2359 | } else if (!(old->ce_flags & CE_CONFLICTED)) { |
076b0adc JS |
2360 | /* |
2361 | * See if we can re-use the old CE directly? | |
2362 | * That way we get the uptodate stat info. | |
2363 | * | |
7f8ab8dc LT |
2364 | * This also removes the UPDATE flag on a match; otherwise |
2365 | * we will end up overwriting local changes in the work tree. | |
076b0adc JS |
2366 | */ |
2367 | if (same(old, merge)) { | |
eb7a2f1d | 2368 | copy_cache_entry(merge, old); |
7f8ab8dc | 2369 | update = 0; |
076b0adc | 2370 | } else { |
f2fa3542 | 2371 | if (verify_uptodate(old, o)) { |
a849735b | 2372 | discard_cache_entry(merge); |
203a2fe1 | 2373 | return -1; |
f2fa3542 | 2374 | } |
2431afbf NTND |
2375 | /* Migrate old flags over */ |
2376 | update |= old->ce_flags & (CE_SKIP_WORKTREE | CE_NEW_SKIP_WORKTREE); | |
bc052d7f | 2377 | invalidate_ce_path(old, o); |
076b0adc | 2378 | } |
a7bc845a | 2379 | |
e84704f1 | 2380 | if (submodule_from_ce(ce) && file_exists(ce->name)) { |
a7bc845a SB |
2381 | int ret = check_submodule_move_head(ce, oid_to_hex(&old->oid), |
2382 | oid_to_hex(&ce->oid), | |
2383 | o); | |
2384 | if (ret) | |
2385 | return ret; | |
2386 | } | |
e11d7b59 JH |
2387 | } else { |
2388 | /* | |
2389 | * Previously unmerged entry left as an existence | |
2390 | * marker by read_index_unmerged(); | |
2391 | */ | |
1fdd51aa EN |
2392 | if (verify_absent_if_directory(merge, |
2393 | ERROR_WOULD_LOSE_UNTRACKED_OVERWRITTEN, o)) { | |
2394 | discard_cache_entry(merge); | |
2395 | return -1; | |
2396 | } | |
2397 | ||
e11d7b59 | 2398 | invalidate_ce_path(old, o); |
076b0adc JS |
2399 | } |
2400 | ||
cc756edd JS |
2401 | if (do_add_entry(o, merge, update, CE_STAGEMASK) < 0) |
2402 | return -1; | |
076b0adc JS |
2403 | return 1; |
2404 | } | |
2405 | ||
eb9ae4b5 RS |
2406 | static int deleted_entry(const struct cache_entry *ce, |
2407 | const struct cache_entry *old, | |
2408 | struct unpack_trees_options *o) | |
076b0adc | 2409 | { |
34110cd4 LT |
2410 | /* Did it exist in the index? */ |
2411 | if (!old) { | |
08402b04 | 2412 | if (verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_REMOVED, o)) |
203a2fe1 | 2413 | return -1; |
34110cd4 | 2414 | return 0; |
56d06fe4 EN |
2415 | } else if (verify_absent_if_directory(ce, ERROR_WOULD_LOSE_UNTRACKED_REMOVED, o)) { |
2416 | return -1; | |
34110cd4 | 2417 | } |
56d06fe4 | 2418 | |
e11d7b59 | 2419 | if (!(old->ce_flags & CE_CONFLICTED) && verify_uptodate(old, o)) |
34110cd4 LT |
2420 | return -1; |
2421 | add_entry(o, ce, CE_REMOVE, 0); | |
bc052d7f | 2422 | invalidate_ce_path(ce, o); |
076b0adc JS |
2423 | return 1; |
2424 | } | |
2425 | ||
eb9ae4b5 RS |
2426 | static int keep_entry(const struct cache_entry *ce, |
2427 | struct unpack_trees_options *o) | |
076b0adc | 2428 | { |
34110cd4 | 2429 | add_entry(o, ce, 0, 0); |
5697ca9a NTND |
2430 | if (ce_stage(ce)) |
2431 | invalidate_ce_path(ce, o); | |
076b0adc JS |
2432 | return 1; |
2433 | } | |
2434 | ||
2435 | #if DBRT_DEBUG | |
2436 | static void show_stage_entry(FILE *o, | |
2437 | const char *label, const struct cache_entry *ce) | |
2438 | { | |
2439 | if (!ce) | |
2440 | fprintf(o, "%s (missing)\n", label); | |
2441 | else | |
2442 | fprintf(o, "%s%06o %s %d\t%s\n", | |
2443 | label, | |
7a51ed66 | 2444 | ce->ce_mode, |
99d1a986 | 2445 | oid_to_hex(&ce->oid), |
076b0adc JS |
2446 | ce_stage(ce), |
2447 | ce->name); | |
2448 | } | |
2449 | #endif | |
2450 | ||
5828e835 RS |
2451 | int threeway_merge(const struct cache_entry * const *stages, |
2452 | struct unpack_trees_options *o) | |
076b0adc | 2453 | { |
eb9ae4b5 RS |
2454 | const struct cache_entry *index; |
2455 | const struct cache_entry *head; | |
2456 | const struct cache_entry *remote = stages[o->head_idx + 1]; | |
076b0adc JS |
2457 | int count; |
2458 | int head_match = 0; | |
2459 | int remote_match = 0; | |
076b0adc JS |
2460 | |
2461 | int df_conflict_head = 0; | |
2462 | int df_conflict_remote = 0; | |
2463 | ||
2464 | int any_anc_missing = 0; | |
2465 | int no_anc_exists = 1; | |
2466 | int i; | |
2467 | ||
2468 | for (i = 1; i < o->head_idx; i++) { | |
4c4caafc | 2469 | if (!stages[i] || stages[i] == o->df_conflict_entry) |
076b0adc | 2470 | any_anc_missing = 1; |
4c4caafc | 2471 | else |
076b0adc | 2472 | no_anc_exists = 0; |
076b0adc JS |
2473 | } |
2474 | ||
2475 | index = stages[0]; | |
2476 | head = stages[o->head_idx]; | |
2477 | ||
2478 | if (head == o->df_conflict_entry) { | |
2479 | df_conflict_head = 1; | |
2480 | head = NULL; | |
2481 | } | |
2482 | ||
2483 | if (remote == o->df_conflict_entry) { | |
2484 | df_conflict_remote = 1; | |
2485 | remote = NULL; | |
2486 | } | |
2487 | ||
cee2d6ae JH |
2488 | /* |
2489 | * First, if there's a #16 situation, note that to prevent #13 | |
076b0adc JS |
2490 | * and #14. |
2491 | */ | |
2492 | if (!same(remote, head)) { | |
2493 | for (i = 1; i < o->head_idx; i++) { | |
2494 | if (same(stages[i], head)) { | |
2495 | head_match = i; | |
2496 | } | |
2497 | if (same(stages[i], remote)) { | |
2498 | remote_match = i; | |
2499 | } | |
2500 | } | |
2501 | } | |
2502 | ||
cee2d6ae JH |
2503 | /* |
2504 | * We start with cases where the index is allowed to match | |
076b0adc JS |
2505 | * something other than the head: #14(ALT) and #2ALT, where it |
2506 | * is permitted to match the result instead. | |
2507 | */ | |
2508 | /* #14, #14ALT, #2ALT */ | |
2509 | if (remote && !df_conflict_head && head_match && !remote_match) { | |
2510 | if (index && !same(index, remote) && !same(index, head)) | |
6a143aa2 | 2511 | return reject_merge(index, o); |
076b0adc JS |
2512 | return merged_entry(remote, index, o); |
2513 | } | |
2514 | /* | |
2515 | * If we have an entry in the index cache, then we want to | |
2516 | * make sure that it matches head. | |
2517 | */ | |
4e7c4571 | 2518 | if (index && !same(index, head)) |
6a143aa2 | 2519 | return reject_merge(index, o); |
076b0adc JS |
2520 | |
2521 | if (head) { | |
2522 | /* #5ALT, #15 */ | |
2523 | if (same(head, remote)) | |
2524 | return merged_entry(head, index, o); | |
2525 | /* #13, #3ALT */ | |
2526 | if (!df_conflict_remote && remote_match && !head_match) | |
2527 | return merged_entry(head, index, o); | |
2528 | } | |
2529 | ||
2530 | /* #1 */ | |
34110cd4 | 2531 | if (!head && !remote && any_anc_missing) |
076b0adc JS |
2532 | return 0; |
2533 | ||
cee2d6ae JH |
2534 | /* |
2535 | * Under the "aggressive" rule, we resolve mostly trivial | |
076b0adc JS |
2536 | * cases that we historically had git-merge-one-file resolve. |
2537 | */ | |
2538 | if (o->aggressive) { | |
cee2d6ae JH |
2539 | int head_deleted = !head; |
2540 | int remote_deleted = !remote; | |
eb9ae4b5 | 2541 | const struct cache_entry *ce = NULL; |
4c4caafc JH |
2542 | |
2543 | if (index) | |
0cf73755 | 2544 | ce = index; |
4c4caafc | 2545 | else if (head) |
0cf73755 | 2546 | ce = head; |
4c4caafc | 2547 | else if (remote) |
0cf73755 | 2548 | ce = remote; |
4c4caafc JH |
2549 | else { |
2550 | for (i = 1; i < o->head_idx; i++) { | |
2551 | if (stages[i] && stages[i] != o->df_conflict_entry) { | |
0cf73755 | 2552 | ce = stages[i]; |
4c4caafc JH |
2553 | break; |
2554 | } | |
2555 | } | |
2556 | } | |
2557 | ||
076b0adc JS |
2558 | /* |
2559 | * Deleted in both. | |
2560 | * Deleted in one and unchanged in the other. | |
2561 | */ | |
2562 | if ((head_deleted && remote_deleted) || | |
2563 | (head_deleted && remote && remote_match) || | |
2564 | (remote_deleted && head && head_match)) { | |
2565 | if (index) | |
2566 | return deleted_entry(index, index, o); | |
34110cd4 | 2567 | if (ce && !head_deleted) { |
08402b04 | 2568 | if (verify_absent(ce, ERROR_WOULD_LOSE_UNTRACKED_REMOVED, o)) |
203a2fe1 DB |
2569 | return -1; |
2570 | } | |
076b0adc JS |
2571 | return 0; |
2572 | } | |
2573 | /* | |
2574 | * Added in both, identically. | |
2575 | */ | |
2576 | if (no_anc_exists && head && remote && same(head, remote)) | |
2577 | return merged_entry(head, index, o); | |
2578 | ||
2579 | } | |
2580 | ||
2581 | /* Below are "no merge" cases, which require that the index be | |
2582 | * up-to-date to avoid the files getting overwritten with | |
2583 | * conflict resolution files. | |
2584 | */ | |
2585 | if (index) { | |
203a2fe1 DB |
2586 | if (verify_uptodate(index, o)) |
2587 | return -1; | |
076b0adc | 2588 | } |
076b0adc JS |
2589 | |
2590 | o->nontrivial_merge = 1; | |
2591 | ||
ea4b52a8 | 2592 | /* #2, #3, #4, #6, #7, #9, #10, #11. */ |
076b0adc JS |
2593 | count = 0; |
2594 | if (!head_match || !remote_match) { | |
2595 | for (i = 1; i < o->head_idx; i++) { | |
4c4caafc | 2596 | if (stages[i] && stages[i] != o->df_conflict_entry) { |
7f7932ab | 2597 | keep_entry(stages[i], o); |
076b0adc JS |
2598 | count++; |
2599 | break; | |
2600 | } | |
2601 | } | |
2602 | } | |
2603 | #if DBRT_DEBUG | |
2604 | else { | |
2605 | fprintf(stderr, "read-tree: warning #16 detected\n"); | |
2606 | show_stage_entry(stderr, "head ", stages[head_match]); | |
2607 | show_stage_entry(stderr, "remote ", stages[remote_match]); | |
2608 | } | |
2609 | #endif | |
7f7932ab JH |
2610 | if (head) { count += keep_entry(head, o); } |
2611 | if (remote) { count += keep_entry(remote, o); } | |
076b0adc JS |
2612 | return count; |
2613 | } | |
2614 | ||
2615 | /* | |
2616 | * Two-way merge. | |
2617 | * | |
2618 | * The rule is to "carry forward" what is in the index without losing | |
a75d7b54 | 2619 | * information across a "fast-forward", favoring a successful merge |
076b0adc JS |
2620 | * over a merge failure when it makes sense. For details of the |
2621 | * "carry forward" rule, please see <Documentation/git-read-tree.txt>. | |
2622 | * | |
2623 | */ | |
5828e835 RS |
2624 | int twoway_merge(const struct cache_entry * const *src, |
2625 | struct unpack_trees_options *o) | |
076b0adc | 2626 | { |
eb9ae4b5 RS |
2627 | const struct cache_entry *current = src[0]; |
2628 | const struct cache_entry *oldtree = src[1]; | |
2629 | const struct cache_entry *newtree = src[2]; | |
076b0adc JS |
2630 | |
2631 | if (o->merge_size != 2) | |
2632 | return error("Cannot do a twoway merge of %d trees", | |
2633 | o->merge_size); | |
2634 | ||
b8ba1535 JH |
2635 | if (oldtree == o->df_conflict_entry) |
2636 | oldtree = NULL; | |
2637 | if (newtree == o->df_conflict_entry) | |
2638 | newtree = NULL; | |
2639 | ||
076b0adc | 2640 | if (current) { |
b018ff60 JK |
2641 | if (current->ce_flags & CE_CONFLICTED) { |
2642 | if (same(oldtree, newtree) || o->reset) { | |
2643 | if (!newtree) | |
2644 | return deleted_entry(current, current, o); | |
2645 | else | |
2646 | return merged_entry(newtree, current, o); | |
2647 | } | |
6a143aa2 | 2648 | return reject_merge(current, o); |
6c1db1b3 | 2649 | } else if ((!oldtree && !newtree) || /* 4 and 5 */ |
b018ff60 JK |
2650 | (!oldtree && newtree && |
2651 | same(current, newtree)) || /* 6 and 7 */ | |
2652 | (oldtree && newtree && | |
2653 | same(oldtree, newtree)) || /* 14 and 15 */ | |
2654 | (oldtree && newtree && | |
2655 | !same(oldtree, newtree) && /* 18 and 19 */ | |
2656 | same(current, newtree))) { | |
7f7932ab | 2657 | return keep_entry(current, o); |
6c1db1b3 | 2658 | } else if (oldtree && !newtree && same(current, oldtree)) { |
076b0adc JS |
2659 | /* 10 or 11 */ |
2660 | return deleted_entry(oldtree, current, o); | |
6c1db1b3 | 2661 | } else if (oldtree && newtree && |
076b0adc JS |
2662 | same(current, oldtree) && !same(current, newtree)) { |
2663 | /* 20 or 21 */ | |
2664 | return merged_entry(newtree, current, o); | |
e05cdb17 DS |
2665 | } else if (current && !oldtree && newtree && |
2666 | S_ISSPARSEDIR(current->ce_mode) != S_ISSPARSEDIR(newtree->ce_mode) && | |
2667 | ce_stage(current) == 0) { | |
2668 | /* | |
2669 | * This case is a directory/file conflict across the sparse-index | |
2670 | * boundary. When we are changing from one path to another via | |
2671 | * 'git checkout', then we want to replace one entry with another | |
2672 | * via merged_entry(). If there are staged changes, then we should | |
2673 | * reject the merge instead. | |
2674 | */ | |
2675 | return merged_entry(newtree, current, o); | |
6c1db1b3 | 2676 | } else |
6a143aa2 | 2677 | return reject_merge(current, o); |
076b0adc | 2678 | } |
55218834 JH |
2679 | else if (newtree) { |
2680 | if (oldtree && !o->initial_checkout) { | |
2681 | /* | |
2682 | * deletion of the path was staged; | |
2683 | */ | |
2684 | if (same(oldtree, newtree)) | |
2685 | return 1; | |
2686 | return reject_merge(oldtree, o); | |
2687 | } | |
076b0adc | 2688 | return merged_entry(newtree, current, o); |
55218834 | 2689 | } |
d699676d | 2690 | return deleted_entry(oldtree, current, o); |
076b0adc JS |
2691 | } |
2692 | ||
2693 | /* | |
2694 | * Bind merge. | |
2695 | * | |
2696 | * Keep the index entries at stage0, collapse stage1 but make sure | |
2697 | * stage0 does not have anything there. | |
2698 | */ | |
5828e835 RS |
2699 | int bind_merge(const struct cache_entry * const *src, |
2700 | struct unpack_trees_options *o) | |
076b0adc | 2701 | { |
eb9ae4b5 RS |
2702 | const struct cache_entry *old = src[0]; |
2703 | const struct cache_entry *a = src[1]; | |
076b0adc JS |
2704 | |
2705 | if (o->merge_size != 1) | |
82247e9b | 2706 | return error("Cannot do a bind merge of %d trees", |
076b0adc JS |
2707 | o->merge_size); |
2708 | if (a && old) | |
b165fac8 | 2709 | return o->quiet ? -1 : |
3d415425 SB |
2710 | error(ERRORMSG(o, ERROR_BIND_OVERLAP), |
2711 | super_prefixed(a->name), | |
2712 | super_prefixed(old->name)); | |
076b0adc | 2713 | if (!a) |
7f7932ab | 2714 | return keep_entry(old, o); |
076b0adc JS |
2715 | else |
2716 | return merged_entry(a, NULL, o); | |
2717 | } | |
2718 | ||
2719 | /* | |
2720 | * One-way merge. | |
2721 | * | |
2722 | * The rule is: | |
2723 | * - take the stat information from stage0, take the data from stage1 | |
2724 | */ | |
5828e835 RS |
2725 | int oneway_merge(const struct cache_entry * const *src, |
2726 | struct unpack_trees_options *o) | |
076b0adc | 2727 | { |
eb9ae4b5 RS |
2728 | const struct cache_entry *old = src[0]; |
2729 | const struct cache_entry *a = src[1]; | |
076b0adc JS |
2730 | |
2731 | if (o->merge_size != 1) | |
2732 | return error("Cannot do a oneway merge of %d trees", | |
2733 | o->merge_size); | |
2734 | ||
78d3b06e | 2735 | if (!a || a == o->df_conflict_entry) |
076b0adc | 2736 | return deleted_entry(old, old, o); |
34110cd4 | 2737 | |
076b0adc | 2738 | if (old && same(old, a)) { |
34110cd4 | 2739 | int update = 0; |
679f2f9f US |
2740 | if (o->reset && o->update && !ce_uptodate(old) && !ce_skip_worktree(old) && |
2741 | !(old->ce_flags & CE_FSMONITOR_VALID)) { | |
076b0adc JS |
2742 | struct stat st; |
2743 | if (lstat(old->name, &st) || | |
56cac48c | 2744 | ie_match_stat(o->src_index, old, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE)) |
34110cd4 | 2745 | update |= CE_UPDATE; |
076b0adc | 2746 | } |
ad17312e SB |
2747 | if (o->update && S_ISGITLINK(old->ce_mode) && |
2748 | should_update_submodules() && !verify_uptodate(old, o)) | |
2749 | update |= CE_UPDATE; | |
ab5af825 | 2750 | add_entry(o, old, update, CE_STAGEMASK); |
34110cd4 | 2751 | return 0; |
076b0adc JS |
2752 | } |
2753 | return merged_entry(a, old, o); | |
2754 | } | |
d3c7bf73 DL |
2755 | |
2756 | /* | |
2757 | * Merge worktree and untracked entries in a stash entry. | |
2758 | * | |
2759 | * Ignore all index entries. Collapse remaining trees but make sure that they | |
2760 | * don't have any conflicting files. | |
2761 | */ | |
2762 | int stash_worktree_untracked_merge(const struct cache_entry * const *src, | |
2763 | struct unpack_trees_options *o) | |
2764 | { | |
2765 | const struct cache_entry *worktree = src[1]; | |
2766 | const struct cache_entry *untracked = src[2]; | |
2767 | ||
2768 | if (o->merge_size != 2) | |
2769 | BUG("invalid merge_size: %d", o->merge_size); | |
2770 | ||
2771 | if (worktree && untracked) | |
2772 | return error(_("worktree and untracked commit have duplicate entries: %s"), | |
2773 | super_prefixed(worktree->name)); | |
2774 | ||
2775 | return merged_entry(worktree ? worktree : untracked, NULL, o); | |
2776 | } |