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Commit | Line | Data |
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1 | /* | |
2 | (See Documentation/git-fast-import.txt for maintained documentation.) | |
3 | Format of STDIN stream: | |
4 | ||
5 | stream ::= cmd*; | |
6 | ||
7 | cmd ::= new_blob | |
8 | | new_commit | |
9 | | new_tag | |
10 | | reset_branch | |
11 | | checkpoint | |
12 | | progress | |
13 | ; | |
14 | ||
15 | new_blob ::= 'blob' lf | |
16 | mark? | |
17 | file_content; | |
18 | file_content ::= data; | |
19 | ||
20 | new_commit ::= 'commit' sp ref_str lf | |
21 | mark? | |
22 | ('author' (sp name)? sp '<' email '>' sp when lf)? | |
23 | 'committer' (sp name)? sp '<' email '>' sp when lf | |
24 | commit_msg | |
25 | ('from' sp committish lf)? | |
26 | ('merge' sp committish lf)* | |
27 | file_change* | |
28 | lf?; | |
29 | commit_msg ::= data; | |
30 | ||
31 | file_change ::= file_clr | |
32 | | file_del | |
33 | | file_rnm | |
34 | | file_cpy | |
35 | | file_obm | |
36 | | file_inm; | |
37 | file_clr ::= 'deleteall' lf; | |
38 | file_del ::= 'D' sp path_str lf; | |
39 | file_rnm ::= 'R' sp path_str sp path_str lf; | |
40 | file_cpy ::= 'C' sp path_str sp path_str lf; | |
41 | file_obm ::= 'M' sp mode sp (hexsha1 | idnum) sp path_str lf; | |
42 | file_inm ::= 'M' sp mode sp 'inline' sp path_str lf | |
43 | data; | |
44 | note_obm ::= 'N' sp (hexsha1 | idnum) sp committish lf; | |
45 | note_inm ::= 'N' sp 'inline' sp committish lf | |
46 | data; | |
47 | ||
48 | new_tag ::= 'tag' sp tag_str lf | |
49 | 'from' sp committish lf | |
50 | ('tagger' (sp name)? sp '<' email '>' sp when lf)? | |
51 | tag_msg; | |
52 | tag_msg ::= data; | |
53 | ||
54 | reset_branch ::= 'reset' sp ref_str lf | |
55 | ('from' sp committish lf)? | |
56 | lf?; | |
57 | ||
58 | checkpoint ::= 'checkpoint' lf | |
59 | lf?; | |
60 | ||
61 | progress ::= 'progress' sp not_lf* lf | |
62 | lf?; | |
63 | ||
64 | # note: the first idnum in a stream should be 1 and subsequent | |
65 | # idnums should not have gaps between values as this will cause | |
66 | # the stream parser to reserve space for the gapped values. An | |
67 | # idnum can be updated in the future to a new object by issuing | |
68 | # a new mark directive with the old idnum. | |
69 | # | |
70 | mark ::= 'mark' sp idnum lf; | |
71 | data ::= (delimited_data | exact_data) | |
72 | lf?; | |
73 | ||
74 | # note: delim may be any string but must not contain lf. | |
75 | # data_line may contain any data but must not be exactly | |
76 | # delim. | |
77 | delimited_data ::= 'data' sp '<<' delim lf | |
78 | (data_line lf)* | |
79 | delim lf; | |
80 | ||
81 | # note: declen indicates the length of binary_data in bytes. | |
82 | # declen does not include the lf preceding the binary data. | |
83 | # | |
84 | exact_data ::= 'data' sp declen lf | |
85 | binary_data; | |
86 | ||
87 | # note: quoted strings are C-style quoting supporting \c for | |
88 | # common escapes of 'c' (e..g \n, \t, \\, \") or \nnn where nnn | |
89 | # is the signed byte value in octal. Note that the only | |
90 | # characters which must actually be escaped to protect the | |
91 | # stream formatting is: \, " and LF. Otherwise these values | |
92 | # are UTF8. | |
93 | # | |
94 | committish ::= (ref_str | hexsha1 | sha1exp_str | idnum); | |
95 | ref_str ::= ref; | |
96 | sha1exp_str ::= sha1exp; | |
97 | tag_str ::= tag; | |
98 | path_str ::= path | '"' quoted(path) '"' ; | |
99 | mode ::= '100644' | '644' | |
100 | | '100755' | '755' | |
101 | | '120000' | |
102 | ; | |
103 | ||
104 | declen ::= # unsigned 32 bit value, ascii base10 notation; | |
105 | bigint ::= # unsigned integer value, ascii base10 notation; | |
106 | binary_data ::= # file content, not interpreted; | |
107 | ||
108 | when ::= raw_when | rfc2822_when; | |
109 | raw_when ::= ts sp tz; | |
110 | rfc2822_when ::= # Valid RFC 2822 date and time; | |
111 | ||
112 | sp ::= # ASCII space character; | |
113 | lf ::= # ASCII newline (LF) character; | |
114 | ||
115 | # note: a colon (':') must precede the numerical value assigned to | |
116 | # an idnum. This is to distinguish it from a ref or tag name as | |
117 | # GIT does not permit ':' in ref or tag strings. | |
118 | # | |
119 | idnum ::= ':' bigint; | |
120 | path ::= # GIT style file path, e.g. "a/b/c"; | |
121 | ref ::= # GIT ref name, e.g. "refs/heads/MOZ_GECKO_EXPERIMENT"; | |
122 | tag ::= # GIT tag name, e.g. "FIREFOX_1_5"; | |
123 | sha1exp ::= # Any valid GIT SHA1 expression; | |
124 | hexsha1 ::= # SHA1 in hexadecimal format; | |
125 | ||
126 | # note: name and email are UTF8 strings, however name must not | |
127 | # contain '<' or lf and email must not contain any of the | |
128 | # following: '<', '>', lf. | |
129 | # | |
130 | name ::= # valid GIT author/committer name; | |
131 | email ::= # valid GIT author/committer email; | |
132 | ts ::= # time since the epoch in seconds, ascii base10 notation; | |
133 | tz ::= # GIT style timezone; | |
134 | ||
135 | # note: comments and cat requests may appear anywhere | |
136 | # in the input, except within a data command. Any form | |
137 | # of the data command always escapes the related input | |
138 | # from comment processing. | |
139 | # | |
140 | # In case it is not clear, the '#' that starts the comment | |
141 | # must be the first character on that line (an lf | |
142 | # preceded it). | |
143 | # | |
144 | cat_blob ::= 'cat-blob' sp (hexsha1 | idnum) lf; | |
145 | ||
146 | comment ::= '#' not_lf* lf; | |
147 | not_lf ::= # Any byte that is not ASCII newline (LF); | |
148 | */ | |
149 | ||
150 | #include "builtin.h" | |
151 | #include "cache.h" | |
152 | #include "object.h" | |
153 | #include "blob.h" | |
154 | #include "tree.h" | |
155 | #include "commit.h" | |
156 | #include "delta.h" | |
157 | #include "pack.h" | |
158 | #include "refs.h" | |
159 | #include "csum-file.h" | |
160 | #include "quote.h" | |
161 | #include "exec_cmd.h" | |
162 | #include "dir.h" | |
163 | ||
164 | #define PACK_ID_BITS 16 | |
165 | #define MAX_PACK_ID ((1<<PACK_ID_BITS)-1) | |
166 | #define DEPTH_BITS 13 | |
167 | #define MAX_DEPTH ((1<<DEPTH_BITS)-1) | |
168 | ||
169 | struct object_entry | |
170 | { | |
171 | struct pack_idx_entry idx; | |
172 | struct object_entry *next; | |
173 | uint32_t type : TYPE_BITS, | |
174 | pack_id : PACK_ID_BITS, | |
175 | depth : DEPTH_BITS; | |
176 | }; | |
177 | ||
178 | struct object_entry_pool | |
179 | { | |
180 | struct object_entry_pool *next_pool; | |
181 | struct object_entry *next_free; | |
182 | struct object_entry *end; | |
183 | struct object_entry entries[FLEX_ARRAY]; /* more */ | |
184 | }; | |
185 | ||
186 | struct mark_set | |
187 | { | |
188 | union { | |
189 | struct object_entry *marked[1024]; | |
190 | struct mark_set *sets[1024]; | |
191 | } data; | |
192 | unsigned int shift; | |
193 | }; | |
194 | ||
195 | struct last_object | |
196 | { | |
197 | struct strbuf data; | |
198 | off_t offset; | |
199 | unsigned int depth; | |
200 | unsigned no_swap : 1; | |
201 | }; | |
202 | ||
203 | struct mem_pool | |
204 | { | |
205 | struct mem_pool *next_pool; | |
206 | char *next_free; | |
207 | char *end; | |
208 | uintmax_t space[FLEX_ARRAY]; /* more */ | |
209 | }; | |
210 | ||
211 | struct atom_str | |
212 | { | |
213 | struct atom_str *next_atom; | |
214 | unsigned short str_len; | |
215 | char str_dat[FLEX_ARRAY]; /* more */ | |
216 | }; | |
217 | ||
218 | struct tree_content; | |
219 | struct tree_entry | |
220 | { | |
221 | struct tree_content *tree; | |
222 | struct atom_str *name; | |
223 | struct tree_entry_ms | |
224 | { | |
225 | uint16_t mode; | |
226 | unsigned char sha1[20]; | |
227 | } versions[2]; | |
228 | }; | |
229 | ||
230 | struct tree_content | |
231 | { | |
232 | unsigned int entry_capacity; /* must match avail_tree_content */ | |
233 | unsigned int entry_count; | |
234 | unsigned int delta_depth; | |
235 | struct tree_entry *entries[FLEX_ARRAY]; /* more */ | |
236 | }; | |
237 | ||
238 | struct avail_tree_content | |
239 | { | |
240 | unsigned int entry_capacity; /* must match tree_content */ | |
241 | struct avail_tree_content *next_avail; | |
242 | }; | |
243 | ||
244 | struct branch | |
245 | { | |
246 | struct branch *table_next_branch; | |
247 | struct branch *active_next_branch; | |
248 | const char *name; | |
249 | struct tree_entry branch_tree; | |
250 | uintmax_t last_commit; | |
251 | uintmax_t num_notes; | |
252 | unsigned active : 1; | |
253 | unsigned pack_id : PACK_ID_BITS; | |
254 | unsigned char sha1[20]; | |
255 | }; | |
256 | ||
257 | struct tag | |
258 | { | |
259 | struct tag *next_tag; | |
260 | const char *name; | |
261 | unsigned int pack_id; | |
262 | unsigned char sha1[20]; | |
263 | }; | |
264 | ||
265 | struct hash_list | |
266 | { | |
267 | struct hash_list *next; | |
268 | unsigned char sha1[20]; | |
269 | }; | |
270 | ||
271 | typedef enum { | |
272 | WHENSPEC_RAW = 1, | |
273 | WHENSPEC_RFC2822, | |
274 | WHENSPEC_NOW | |
275 | } whenspec_type; | |
276 | ||
277 | struct recent_command | |
278 | { | |
279 | struct recent_command *prev; | |
280 | struct recent_command *next; | |
281 | char *buf; | |
282 | }; | |
283 | ||
284 | /* Configured limits on output */ | |
285 | static unsigned long max_depth = 10; | |
286 | static off_t max_packsize; | |
287 | static uintmax_t big_file_threshold = 512 * 1024 * 1024; | |
288 | static int force_update; | |
289 | static int pack_compression_level = Z_DEFAULT_COMPRESSION; | |
290 | static int pack_compression_seen; | |
291 | ||
292 | /* Stats and misc. counters */ | |
293 | static uintmax_t alloc_count; | |
294 | static uintmax_t marks_set_count; | |
295 | static uintmax_t object_count_by_type[1 << TYPE_BITS]; | |
296 | static uintmax_t duplicate_count_by_type[1 << TYPE_BITS]; | |
297 | static uintmax_t delta_count_by_type[1 << TYPE_BITS]; | |
298 | static unsigned long object_count; | |
299 | static unsigned long branch_count; | |
300 | static unsigned long branch_load_count; | |
301 | static int failure; | |
302 | static FILE *pack_edges; | |
303 | static unsigned int show_stats = 1; | |
304 | static int global_argc; | |
305 | static const char **global_argv; | |
306 | ||
307 | /* Memory pools */ | |
308 | static size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool); | |
309 | static size_t total_allocd; | |
310 | static struct mem_pool *mem_pool; | |
311 | ||
312 | /* Atom management */ | |
313 | static unsigned int atom_table_sz = 4451; | |
314 | static unsigned int atom_cnt; | |
315 | static struct atom_str **atom_table; | |
316 | ||
317 | /* The .pack file being generated */ | |
318 | static unsigned int pack_id; | |
319 | static struct sha1file *pack_file; | |
320 | static struct packed_git *pack_data; | |
321 | static struct packed_git **all_packs; | |
322 | static off_t pack_size; | |
323 | ||
324 | /* Table of objects we've written. */ | |
325 | static unsigned int object_entry_alloc = 5000; | |
326 | static struct object_entry_pool *blocks; | |
327 | static struct object_entry *object_table[1 << 16]; | |
328 | static struct mark_set *marks; | |
329 | static const char *export_marks_file; | |
330 | static const char *import_marks_file; | |
331 | static int import_marks_file_from_stream; | |
332 | static int import_marks_file_ignore_missing; | |
333 | static int relative_marks_paths; | |
334 | ||
335 | /* Our last blob */ | |
336 | static struct last_object last_blob = { STRBUF_INIT, 0, 0, 0 }; | |
337 | ||
338 | /* Tree management */ | |
339 | static unsigned int tree_entry_alloc = 1000; | |
340 | static void *avail_tree_entry; | |
341 | static unsigned int avail_tree_table_sz = 100; | |
342 | static struct avail_tree_content **avail_tree_table; | |
343 | static struct strbuf old_tree = STRBUF_INIT; | |
344 | static struct strbuf new_tree = STRBUF_INIT; | |
345 | ||
346 | /* Branch data */ | |
347 | static unsigned long max_active_branches = 5; | |
348 | static unsigned long cur_active_branches; | |
349 | static unsigned long branch_table_sz = 1039; | |
350 | static struct branch **branch_table; | |
351 | static struct branch *active_branches; | |
352 | ||
353 | /* Tag data */ | |
354 | static struct tag *first_tag; | |
355 | static struct tag *last_tag; | |
356 | ||
357 | /* Input stream parsing */ | |
358 | static whenspec_type whenspec = WHENSPEC_RAW; | |
359 | static struct strbuf command_buf = STRBUF_INIT; | |
360 | static int unread_command_buf; | |
361 | static struct recent_command cmd_hist = {&cmd_hist, &cmd_hist, NULL}; | |
362 | static struct recent_command *cmd_tail = &cmd_hist; | |
363 | static struct recent_command *rc_free; | |
364 | static unsigned int cmd_save = 100; | |
365 | static uintmax_t next_mark; | |
366 | static struct strbuf new_data = STRBUF_INIT; | |
367 | static int seen_data_command; | |
368 | ||
369 | /* Signal handling */ | |
370 | static volatile sig_atomic_t checkpoint_requested; | |
371 | ||
372 | /* Where to write output of cat-blob commands */ | |
373 | static int cat_blob_fd = STDOUT_FILENO; | |
374 | ||
375 | static void parse_argv(void); | |
376 | static void parse_cat_blob(void); | |
377 | ||
378 | static void write_branch_report(FILE *rpt, struct branch *b) | |
379 | { | |
380 | fprintf(rpt, "%s:\n", b->name); | |
381 | ||
382 | fprintf(rpt, " status :"); | |
383 | if (b->active) | |
384 | fputs(" active", rpt); | |
385 | if (b->branch_tree.tree) | |
386 | fputs(" loaded", rpt); | |
387 | if (is_null_sha1(b->branch_tree.versions[1].sha1)) | |
388 | fputs(" dirty", rpt); | |
389 | fputc('\n', rpt); | |
390 | ||
391 | fprintf(rpt, " tip commit : %s\n", sha1_to_hex(b->sha1)); | |
392 | fprintf(rpt, " old tree : %s\n", sha1_to_hex(b->branch_tree.versions[0].sha1)); | |
393 | fprintf(rpt, " cur tree : %s\n", sha1_to_hex(b->branch_tree.versions[1].sha1)); | |
394 | fprintf(rpt, " commit clock: %" PRIuMAX "\n", b->last_commit); | |
395 | ||
396 | fputs(" last pack : ", rpt); | |
397 | if (b->pack_id < MAX_PACK_ID) | |
398 | fprintf(rpt, "%u", b->pack_id); | |
399 | fputc('\n', rpt); | |
400 | ||
401 | fputc('\n', rpt); | |
402 | } | |
403 | ||
404 | static void dump_marks_helper(FILE *, uintmax_t, struct mark_set *); | |
405 | ||
406 | static void write_crash_report(const char *err) | |
407 | { | |
408 | char *loc = git_path("fast_import_crash_%"PRIuMAX, (uintmax_t) getpid()); | |
409 | FILE *rpt = fopen(loc, "w"); | |
410 | struct branch *b; | |
411 | unsigned long lu; | |
412 | struct recent_command *rc; | |
413 | ||
414 | if (!rpt) { | |
415 | error("can't write crash report %s: %s", loc, strerror(errno)); | |
416 | return; | |
417 | } | |
418 | ||
419 | fprintf(stderr, "fast-import: dumping crash report to %s\n", loc); | |
420 | ||
421 | fprintf(rpt, "fast-import crash report:\n"); | |
422 | fprintf(rpt, " fast-import process: %"PRIuMAX"\n", (uintmax_t) getpid()); | |
423 | fprintf(rpt, " parent process : %"PRIuMAX"\n", (uintmax_t) getppid()); | |
424 | fprintf(rpt, " at %s\n", show_date(time(NULL), 0, DATE_LOCAL)); | |
425 | fputc('\n', rpt); | |
426 | ||
427 | fputs("fatal: ", rpt); | |
428 | fputs(err, rpt); | |
429 | fputc('\n', rpt); | |
430 | ||
431 | fputc('\n', rpt); | |
432 | fputs("Most Recent Commands Before Crash\n", rpt); | |
433 | fputs("---------------------------------\n", rpt); | |
434 | for (rc = cmd_hist.next; rc != &cmd_hist; rc = rc->next) { | |
435 | if (rc->next == &cmd_hist) | |
436 | fputs("* ", rpt); | |
437 | else | |
438 | fputs(" ", rpt); | |
439 | fputs(rc->buf, rpt); | |
440 | fputc('\n', rpt); | |
441 | } | |
442 | ||
443 | fputc('\n', rpt); | |
444 | fputs("Active Branch LRU\n", rpt); | |
445 | fputs("-----------------\n", rpt); | |
446 | fprintf(rpt, " active_branches = %lu cur, %lu max\n", | |
447 | cur_active_branches, | |
448 | max_active_branches); | |
449 | fputc('\n', rpt); | |
450 | fputs(" pos clock name\n", rpt); | |
451 | fputs(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n", rpt); | |
452 | for (b = active_branches, lu = 0; b; b = b->active_next_branch) | |
453 | fprintf(rpt, " %2lu) %6" PRIuMAX" %s\n", | |
454 | ++lu, b->last_commit, b->name); | |
455 | ||
456 | fputc('\n', rpt); | |
457 | fputs("Inactive Branches\n", rpt); | |
458 | fputs("-----------------\n", rpt); | |
459 | for (lu = 0; lu < branch_table_sz; lu++) { | |
460 | for (b = branch_table[lu]; b; b = b->table_next_branch) | |
461 | write_branch_report(rpt, b); | |
462 | } | |
463 | ||
464 | if (first_tag) { | |
465 | struct tag *tg; | |
466 | fputc('\n', rpt); | |
467 | fputs("Annotated Tags\n", rpt); | |
468 | fputs("--------------\n", rpt); | |
469 | for (tg = first_tag; tg; tg = tg->next_tag) { | |
470 | fputs(sha1_to_hex(tg->sha1), rpt); | |
471 | fputc(' ', rpt); | |
472 | fputs(tg->name, rpt); | |
473 | fputc('\n', rpt); | |
474 | } | |
475 | } | |
476 | ||
477 | fputc('\n', rpt); | |
478 | fputs("Marks\n", rpt); | |
479 | fputs("-----\n", rpt); | |
480 | if (export_marks_file) | |
481 | fprintf(rpt, " exported to %s\n", export_marks_file); | |
482 | else | |
483 | dump_marks_helper(rpt, 0, marks); | |
484 | ||
485 | fputc('\n', rpt); | |
486 | fputs("-------------------\n", rpt); | |
487 | fputs("END OF CRASH REPORT\n", rpt); | |
488 | fclose(rpt); | |
489 | } | |
490 | ||
491 | static void end_packfile(void); | |
492 | static void unkeep_all_packs(void); | |
493 | static void dump_marks(void); | |
494 | ||
495 | static NORETURN void die_nicely(const char *err, va_list params) | |
496 | { | |
497 | static int zombie; | |
498 | char message[2 * PATH_MAX]; | |
499 | ||
500 | vsnprintf(message, sizeof(message), err, params); | |
501 | fputs("fatal: ", stderr); | |
502 | fputs(message, stderr); | |
503 | fputc('\n', stderr); | |
504 | ||
505 | if (!zombie) { | |
506 | zombie = 1; | |
507 | write_crash_report(message); | |
508 | end_packfile(); | |
509 | unkeep_all_packs(); | |
510 | dump_marks(); | |
511 | } | |
512 | exit(128); | |
513 | } | |
514 | ||
515 | #ifndef SIGUSR1 /* Windows, for example */ | |
516 | ||
517 | static void set_checkpoint_signal(void) | |
518 | { | |
519 | } | |
520 | ||
521 | #else | |
522 | ||
523 | static void checkpoint_signal(int signo) | |
524 | { | |
525 | checkpoint_requested = 1; | |
526 | } | |
527 | ||
528 | static void set_checkpoint_signal(void) | |
529 | { | |
530 | struct sigaction sa; | |
531 | ||
532 | memset(&sa, 0, sizeof(sa)); | |
533 | sa.sa_handler = checkpoint_signal; | |
534 | sigemptyset(&sa.sa_mask); | |
535 | sa.sa_flags = SA_RESTART; | |
536 | sigaction(SIGUSR1, &sa, NULL); | |
537 | } | |
538 | ||
539 | #endif | |
540 | ||
541 | static void alloc_objects(unsigned int cnt) | |
542 | { | |
543 | struct object_entry_pool *b; | |
544 | ||
545 | b = xmalloc(sizeof(struct object_entry_pool) | |
546 | + cnt * sizeof(struct object_entry)); | |
547 | b->next_pool = blocks; | |
548 | b->next_free = b->entries; | |
549 | b->end = b->entries + cnt; | |
550 | blocks = b; | |
551 | alloc_count += cnt; | |
552 | } | |
553 | ||
554 | static struct object_entry *new_object(unsigned char *sha1) | |
555 | { | |
556 | struct object_entry *e; | |
557 | ||
558 | if (blocks->next_free == blocks->end) | |
559 | alloc_objects(object_entry_alloc); | |
560 | ||
561 | e = blocks->next_free++; | |
562 | hashcpy(e->idx.sha1, sha1); | |
563 | return e; | |
564 | } | |
565 | ||
566 | static struct object_entry *find_object(unsigned char *sha1) | |
567 | { | |
568 | unsigned int h = sha1[0] << 8 | sha1[1]; | |
569 | struct object_entry *e; | |
570 | for (e = object_table[h]; e; e = e->next) | |
571 | if (!hashcmp(sha1, e->idx.sha1)) | |
572 | return e; | |
573 | return NULL; | |
574 | } | |
575 | ||
576 | static struct object_entry *insert_object(unsigned char *sha1) | |
577 | { | |
578 | unsigned int h = sha1[0] << 8 | sha1[1]; | |
579 | struct object_entry *e = object_table[h]; | |
580 | ||
581 | while (e) { | |
582 | if (!hashcmp(sha1, e->idx.sha1)) | |
583 | return e; | |
584 | e = e->next; | |
585 | } | |
586 | ||
587 | e = new_object(sha1); | |
588 | e->next = object_table[h]; | |
589 | e->idx.offset = 0; | |
590 | object_table[h] = e; | |
591 | return e; | |
592 | } | |
593 | ||
594 | static unsigned int hc_str(const char *s, size_t len) | |
595 | { | |
596 | unsigned int r = 0; | |
597 | while (len-- > 0) | |
598 | r = r * 31 + *s++; | |
599 | return r; | |
600 | } | |
601 | ||
602 | static void *pool_alloc(size_t len) | |
603 | { | |
604 | struct mem_pool *p; | |
605 | void *r; | |
606 | ||
607 | /* round up to a 'uintmax_t' alignment */ | |
608 | if (len & (sizeof(uintmax_t) - 1)) | |
609 | len += sizeof(uintmax_t) - (len & (sizeof(uintmax_t) - 1)); | |
610 | ||
611 | for (p = mem_pool; p; p = p->next_pool) | |
612 | if ((p->end - p->next_free >= len)) | |
613 | break; | |
614 | ||
615 | if (!p) { | |
616 | if (len >= (mem_pool_alloc/2)) { | |
617 | total_allocd += len; | |
618 | return xmalloc(len); | |
619 | } | |
620 | total_allocd += sizeof(struct mem_pool) + mem_pool_alloc; | |
621 | p = xmalloc(sizeof(struct mem_pool) + mem_pool_alloc); | |
622 | p->next_pool = mem_pool; | |
623 | p->next_free = (char *) p->space; | |
624 | p->end = p->next_free + mem_pool_alloc; | |
625 | mem_pool = p; | |
626 | } | |
627 | ||
628 | r = p->next_free; | |
629 | p->next_free += len; | |
630 | return r; | |
631 | } | |
632 | ||
633 | static void *pool_calloc(size_t count, size_t size) | |
634 | { | |
635 | size_t len = count * size; | |
636 | void *r = pool_alloc(len); | |
637 | memset(r, 0, len); | |
638 | return r; | |
639 | } | |
640 | ||
641 | static char *pool_strdup(const char *s) | |
642 | { | |
643 | char *r = pool_alloc(strlen(s) + 1); | |
644 | strcpy(r, s); | |
645 | return r; | |
646 | } | |
647 | ||
648 | static void insert_mark(uintmax_t idnum, struct object_entry *oe) | |
649 | { | |
650 | struct mark_set *s = marks; | |
651 | while ((idnum >> s->shift) >= 1024) { | |
652 | s = pool_calloc(1, sizeof(struct mark_set)); | |
653 | s->shift = marks->shift + 10; | |
654 | s->data.sets[0] = marks; | |
655 | marks = s; | |
656 | } | |
657 | while (s->shift) { | |
658 | uintmax_t i = idnum >> s->shift; | |
659 | idnum -= i << s->shift; | |
660 | if (!s->data.sets[i]) { | |
661 | s->data.sets[i] = pool_calloc(1, sizeof(struct mark_set)); | |
662 | s->data.sets[i]->shift = s->shift - 10; | |
663 | } | |
664 | s = s->data.sets[i]; | |
665 | } | |
666 | if (!s->data.marked[idnum]) | |
667 | marks_set_count++; | |
668 | s->data.marked[idnum] = oe; | |
669 | } | |
670 | ||
671 | static struct object_entry *find_mark(uintmax_t idnum) | |
672 | { | |
673 | uintmax_t orig_idnum = idnum; | |
674 | struct mark_set *s = marks; | |
675 | struct object_entry *oe = NULL; | |
676 | if ((idnum >> s->shift) < 1024) { | |
677 | while (s && s->shift) { | |
678 | uintmax_t i = idnum >> s->shift; | |
679 | idnum -= i << s->shift; | |
680 | s = s->data.sets[i]; | |
681 | } | |
682 | if (s) | |
683 | oe = s->data.marked[idnum]; | |
684 | } | |
685 | if (!oe) | |
686 | die("mark :%" PRIuMAX " not declared", orig_idnum); | |
687 | return oe; | |
688 | } | |
689 | ||
690 | static struct atom_str *to_atom(const char *s, unsigned short len) | |
691 | { | |
692 | unsigned int hc = hc_str(s, len) % atom_table_sz; | |
693 | struct atom_str *c; | |
694 | ||
695 | for (c = atom_table[hc]; c; c = c->next_atom) | |
696 | if (c->str_len == len && !strncmp(s, c->str_dat, len)) | |
697 | return c; | |
698 | ||
699 | c = pool_alloc(sizeof(struct atom_str) + len + 1); | |
700 | c->str_len = len; | |
701 | strncpy(c->str_dat, s, len); | |
702 | c->str_dat[len] = 0; | |
703 | c->next_atom = atom_table[hc]; | |
704 | atom_table[hc] = c; | |
705 | atom_cnt++; | |
706 | return c; | |
707 | } | |
708 | ||
709 | static struct branch *lookup_branch(const char *name) | |
710 | { | |
711 | unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; | |
712 | struct branch *b; | |
713 | ||
714 | for (b = branch_table[hc]; b; b = b->table_next_branch) | |
715 | if (!strcmp(name, b->name)) | |
716 | return b; | |
717 | return NULL; | |
718 | } | |
719 | ||
720 | static struct branch *new_branch(const char *name) | |
721 | { | |
722 | unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz; | |
723 | struct branch *b = lookup_branch(name); | |
724 | ||
725 | if (b) | |
726 | die("Invalid attempt to create duplicate branch: %s", name); | |
727 | switch (check_ref_format(name)) { | |
728 | case 0: break; /* its valid */ | |
729 | case CHECK_REF_FORMAT_ONELEVEL: | |
730 | break; /* valid, but too few '/', allow anyway */ | |
731 | default: | |
732 | die("Branch name doesn't conform to GIT standards: %s", name); | |
733 | } | |
734 | ||
735 | b = pool_calloc(1, sizeof(struct branch)); | |
736 | b->name = pool_strdup(name); | |
737 | b->table_next_branch = branch_table[hc]; | |
738 | b->branch_tree.versions[0].mode = S_IFDIR; | |
739 | b->branch_tree.versions[1].mode = S_IFDIR; | |
740 | b->num_notes = 0; | |
741 | b->active = 0; | |
742 | b->pack_id = MAX_PACK_ID; | |
743 | branch_table[hc] = b; | |
744 | branch_count++; | |
745 | return b; | |
746 | } | |
747 | ||
748 | static unsigned int hc_entries(unsigned int cnt) | |
749 | { | |
750 | cnt = cnt & 7 ? (cnt / 8) + 1 : cnt / 8; | |
751 | return cnt < avail_tree_table_sz ? cnt : avail_tree_table_sz - 1; | |
752 | } | |
753 | ||
754 | static struct tree_content *new_tree_content(unsigned int cnt) | |
755 | { | |
756 | struct avail_tree_content *f, *l = NULL; | |
757 | struct tree_content *t; | |
758 | unsigned int hc = hc_entries(cnt); | |
759 | ||
760 | for (f = avail_tree_table[hc]; f; l = f, f = f->next_avail) | |
761 | if (f->entry_capacity >= cnt) | |
762 | break; | |
763 | ||
764 | if (f) { | |
765 | if (l) | |
766 | l->next_avail = f->next_avail; | |
767 | else | |
768 | avail_tree_table[hc] = f->next_avail; | |
769 | } else { | |
770 | cnt = cnt & 7 ? ((cnt / 8) + 1) * 8 : cnt; | |
771 | f = pool_alloc(sizeof(*t) + sizeof(t->entries[0]) * cnt); | |
772 | f->entry_capacity = cnt; | |
773 | } | |
774 | ||
775 | t = (struct tree_content*)f; | |
776 | t->entry_count = 0; | |
777 | t->delta_depth = 0; | |
778 | return t; | |
779 | } | |
780 | ||
781 | static void release_tree_entry(struct tree_entry *e); | |
782 | static void release_tree_content(struct tree_content *t) | |
783 | { | |
784 | struct avail_tree_content *f = (struct avail_tree_content*)t; | |
785 | unsigned int hc = hc_entries(f->entry_capacity); | |
786 | f->next_avail = avail_tree_table[hc]; | |
787 | avail_tree_table[hc] = f; | |
788 | } | |
789 | ||
790 | static void release_tree_content_recursive(struct tree_content *t) | |
791 | { | |
792 | unsigned int i; | |
793 | for (i = 0; i < t->entry_count; i++) | |
794 | release_tree_entry(t->entries[i]); | |
795 | release_tree_content(t); | |
796 | } | |
797 | ||
798 | static struct tree_content *grow_tree_content( | |
799 | struct tree_content *t, | |
800 | int amt) | |
801 | { | |
802 | struct tree_content *r = new_tree_content(t->entry_count + amt); | |
803 | r->entry_count = t->entry_count; | |
804 | r->delta_depth = t->delta_depth; | |
805 | memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0])); | |
806 | release_tree_content(t); | |
807 | return r; | |
808 | } | |
809 | ||
810 | static struct tree_entry *new_tree_entry(void) | |
811 | { | |
812 | struct tree_entry *e; | |
813 | ||
814 | if (!avail_tree_entry) { | |
815 | unsigned int n = tree_entry_alloc; | |
816 | total_allocd += n * sizeof(struct tree_entry); | |
817 | avail_tree_entry = e = xmalloc(n * sizeof(struct tree_entry)); | |
818 | while (n-- > 1) { | |
819 | *((void**)e) = e + 1; | |
820 | e++; | |
821 | } | |
822 | *((void**)e) = NULL; | |
823 | } | |
824 | ||
825 | e = avail_tree_entry; | |
826 | avail_tree_entry = *((void**)e); | |
827 | return e; | |
828 | } | |
829 | ||
830 | static void release_tree_entry(struct tree_entry *e) | |
831 | { | |
832 | if (e->tree) | |
833 | release_tree_content_recursive(e->tree); | |
834 | *((void**)e) = avail_tree_entry; | |
835 | avail_tree_entry = e; | |
836 | } | |
837 | ||
838 | static struct tree_content *dup_tree_content(struct tree_content *s) | |
839 | { | |
840 | struct tree_content *d; | |
841 | struct tree_entry *a, *b; | |
842 | unsigned int i; | |
843 | ||
844 | if (!s) | |
845 | return NULL; | |
846 | d = new_tree_content(s->entry_count); | |
847 | for (i = 0; i < s->entry_count; i++) { | |
848 | a = s->entries[i]; | |
849 | b = new_tree_entry(); | |
850 | memcpy(b, a, sizeof(*a)); | |
851 | if (a->tree && is_null_sha1(b->versions[1].sha1)) | |
852 | b->tree = dup_tree_content(a->tree); | |
853 | else | |
854 | b->tree = NULL; | |
855 | d->entries[i] = b; | |
856 | } | |
857 | d->entry_count = s->entry_count; | |
858 | d->delta_depth = s->delta_depth; | |
859 | ||
860 | return d; | |
861 | } | |
862 | ||
863 | static void start_packfile(void) | |
864 | { | |
865 | static char tmpfile[PATH_MAX]; | |
866 | struct packed_git *p; | |
867 | struct pack_header hdr; | |
868 | int pack_fd; | |
869 | ||
870 | pack_fd = odb_mkstemp(tmpfile, sizeof(tmpfile), | |
871 | "pack/tmp_pack_XXXXXX"); | |
872 | p = xcalloc(1, sizeof(*p) + strlen(tmpfile) + 2); | |
873 | strcpy(p->pack_name, tmpfile); | |
874 | p->pack_fd = pack_fd; | |
875 | pack_file = sha1fd(pack_fd, p->pack_name); | |
876 | ||
877 | hdr.hdr_signature = htonl(PACK_SIGNATURE); | |
878 | hdr.hdr_version = htonl(2); | |
879 | hdr.hdr_entries = 0; | |
880 | sha1write(pack_file, &hdr, sizeof(hdr)); | |
881 | ||
882 | pack_data = p; | |
883 | pack_size = sizeof(hdr); | |
884 | object_count = 0; | |
885 | ||
886 | all_packs = xrealloc(all_packs, sizeof(*all_packs) * (pack_id + 1)); | |
887 | all_packs[pack_id] = p; | |
888 | } | |
889 | ||
890 | static const char *create_index(void) | |
891 | { | |
892 | const char *tmpfile; | |
893 | struct pack_idx_entry **idx, **c, **last; | |
894 | struct object_entry *e; | |
895 | struct object_entry_pool *o; | |
896 | ||
897 | /* Build the table of object IDs. */ | |
898 | idx = xmalloc(object_count * sizeof(*idx)); | |
899 | c = idx; | |
900 | for (o = blocks; o; o = o->next_pool) | |
901 | for (e = o->next_free; e-- != o->entries;) | |
902 | if (pack_id == e->pack_id) | |
903 | *c++ = &e->idx; | |
904 | last = idx + object_count; | |
905 | if (c != last) | |
906 | die("internal consistency error creating the index"); | |
907 | ||
908 | tmpfile = write_idx_file(NULL, idx, object_count, pack_data->sha1); | |
909 | free(idx); | |
910 | return tmpfile; | |
911 | } | |
912 | ||
913 | static char *keep_pack(const char *curr_index_name) | |
914 | { | |
915 | static char name[PATH_MAX]; | |
916 | static const char *keep_msg = "fast-import"; | |
917 | int keep_fd; | |
918 | ||
919 | keep_fd = odb_pack_keep(name, sizeof(name), pack_data->sha1); | |
920 | if (keep_fd < 0) | |
921 | die_errno("cannot create keep file"); | |
922 | write_or_die(keep_fd, keep_msg, strlen(keep_msg)); | |
923 | if (close(keep_fd)) | |
924 | die_errno("failed to write keep file"); | |
925 | ||
926 | snprintf(name, sizeof(name), "%s/pack/pack-%s.pack", | |
927 | get_object_directory(), sha1_to_hex(pack_data->sha1)); | |
928 | if (move_temp_to_file(pack_data->pack_name, name)) | |
929 | die("cannot store pack file"); | |
930 | ||
931 | snprintf(name, sizeof(name), "%s/pack/pack-%s.idx", | |
932 | get_object_directory(), sha1_to_hex(pack_data->sha1)); | |
933 | if (move_temp_to_file(curr_index_name, name)) | |
934 | die("cannot store index file"); | |
935 | free((void *)curr_index_name); | |
936 | return name; | |
937 | } | |
938 | ||
939 | static void unkeep_all_packs(void) | |
940 | { | |
941 | static char name[PATH_MAX]; | |
942 | int k; | |
943 | ||
944 | for (k = 0; k < pack_id; k++) { | |
945 | struct packed_git *p = all_packs[k]; | |
946 | snprintf(name, sizeof(name), "%s/pack/pack-%s.keep", | |
947 | get_object_directory(), sha1_to_hex(p->sha1)); | |
948 | unlink_or_warn(name); | |
949 | } | |
950 | } | |
951 | ||
952 | static void end_packfile(void) | |
953 | { | |
954 | struct packed_git *old_p = pack_data, *new_p; | |
955 | ||
956 | clear_delta_base_cache(); | |
957 | if (object_count) { | |
958 | unsigned char cur_pack_sha1[20]; | |
959 | char *idx_name; | |
960 | int i; | |
961 | struct branch *b; | |
962 | struct tag *t; | |
963 | ||
964 | close_pack_windows(pack_data); | |
965 | sha1close(pack_file, cur_pack_sha1, 0); | |
966 | fixup_pack_header_footer(pack_data->pack_fd, pack_data->sha1, | |
967 | pack_data->pack_name, object_count, | |
968 | cur_pack_sha1, pack_size); | |
969 | close(pack_data->pack_fd); | |
970 | idx_name = keep_pack(create_index()); | |
971 | ||
972 | /* Register the packfile with core git's machinery. */ | |
973 | new_p = add_packed_git(idx_name, strlen(idx_name), 1); | |
974 | if (!new_p) | |
975 | die("core git rejected index %s", idx_name); | |
976 | all_packs[pack_id] = new_p; | |
977 | install_packed_git(new_p); | |
978 | ||
979 | /* Print the boundary */ | |
980 | if (pack_edges) { | |
981 | fprintf(pack_edges, "%s:", new_p->pack_name); | |
982 | for (i = 0; i < branch_table_sz; i++) { | |
983 | for (b = branch_table[i]; b; b = b->table_next_branch) { | |
984 | if (b->pack_id == pack_id) | |
985 | fprintf(pack_edges, " %s", sha1_to_hex(b->sha1)); | |
986 | } | |
987 | } | |
988 | for (t = first_tag; t; t = t->next_tag) { | |
989 | if (t->pack_id == pack_id) | |
990 | fprintf(pack_edges, " %s", sha1_to_hex(t->sha1)); | |
991 | } | |
992 | fputc('\n', pack_edges); | |
993 | fflush(pack_edges); | |
994 | } | |
995 | ||
996 | pack_id++; | |
997 | } | |
998 | else { | |
999 | close(old_p->pack_fd); | |
1000 | unlink_or_warn(old_p->pack_name); | |
1001 | } | |
1002 | free(old_p); | |
1003 | ||
1004 | /* We can't carry a delta across packfiles. */ | |
1005 | strbuf_release(&last_blob.data); | |
1006 | last_blob.offset = 0; | |
1007 | last_blob.depth = 0; | |
1008 | } | |
1009 | ||
1010 | static void cycle_packfile(void) | |
1011 | { | |
1012 | end_packfile(); | |
1013 | start_packfile(); | |
1014 | } | |
1015 | ||
1016 | static int store_object( | |
1017 | enum object_type type, | |
1018 | struct strbuf *dat, | |
1019 | struct last_object *last, | |
1020 | unsigned char *sha1out, | |
1021 | uintmax_t mark) | |
1022 | { | |
1023 | void *out, *delta; | |
1024 | struct object_entry *e; | |
1025 | unsigned char hdr[96]; | |
1026 | unsigned char sha1[20]; | |
1027 | unsigned long hdrlen, deltalen; | |
1028 | git_SHA_CTX c; | |
1029 | z_stream s; | |
1030 | ||
1031 | hdrlen = sprintf((char *)hdr,"%s %lu", typename(type), | |
1032 | (unsigned long)dat->len) + 1; | |
1033 | git_SHA1_Init(&c); | |
1034 | git_SHA1_Update(&c, hdr, hdrlen); | |
1035 | git_SHA1_Update(&c, dat->buf, dat->len); | |
1036 | git_SHA1_Final(sha1, &c); | |
1037 | if (sha1out) | |
1038 | hashcpy(sha1out, sha1); | |
1039 | ||
1040 | e = insert_object(sha1); | |
1041 | if (mark) | |
1042 | insert_mark(mark, e); | |
1043 | if (e->idx.offset) { | |
1044 | duplicate_count_by_type[type]++; | |
1045 | return 1; | |
1046 | } else if (find_sha1_pack(sha1, packed_git)) { | |
1047 | e->type = type; | |
1048 | e->pack_id = MAX_PACK_ID; | |
1049 | e->idx.offset = 1; /* just not zero! */ | |
1050 | duplicate_count_by_type[type]++; | |
1051 | return 1; | |
1052 | } | |
1053 | ||
1054 | if (last && last->data.buf && last->depth < max_depth && dat->len > 20) { | |
1055 | delta = diff_delta(last->data.buf, last->data.len, | |
1056 | dat->buf, dat->len, | |
1057 | &deltalen, dat->len - 20); | |
1058 | } else | |
1059 | delta = NULL; | |
1060 | ||
1061 | memset(&s, 0, sizeof(s)); | |
1062 | deflateInit(&s, pack_compression_level); | |
1063 | if (delta) { | |
1064 | s.next_in = delta; | |
1065 | s.avail_in = deltalen; | |
1066 | } else { | |
1067 | s.next_in = (void *)dat->buf; | |
1068 | s.avail_in = dat->len; | |
1069 | } | |
1070 | s.avail_out = deflateBound(&s, s.avail_in); | |
1071 | s.next_out = out = xmalloc(s.avail_out); | |
1072 | while (deflate(&s, Z_FINISH) == Z_OK) | |
1073 | /* nothing */; | |
1074 | deflateEnd(&s); | |
1075 | ||
1076 | /* Determine if we should auto-checkpoint. */ | |
1077 | if ((max_packsize && (pack_size + 60 + s.total_out) > max_packsize) | |
1078 | || (pack_size + 60 + s.total_out) < pack_size) { | |
1079 | ||
1080 | /* This new object needs to *not* have the current pack_id. */ | |
1081 | e->pack_id = pack_id + 1; | |
1082 | cycle_packfile(); | |
1083 | ||
1084 | /* We cannot carry a delta into the new pack. */ | |
1085 | if (delta) { | |
1086 | free(delta); | |
1087 | delta = NULL; | |
1088 | ||
1089 | memset(&s, 0, sizeof(s)); | |
1090 | deflateInit(&s, pack_compression_level); | |
1091 | s.next_in = (void *)dat->buf; | |
1092 | s.avail_in = dat->len; | |
1093 | s.avail_out = deflateBound(&s, s.avail_in); | |
1094 | s.next_out = out = xrealloc(out, s.avail_out); | |
1095 | while (deflate(&s, Z_FINISH) == Z_OK) | |
1096 | /* nothing */; | |
1097 | deflateEnd(&s); | |
1098 | } | |
1099 | } | |
1100 | ||
1101 | e->type = type; | |
1102 | e->pack_id = pack_id; | |
1103 | e->idx.offset = pack_size; | |
1104 | object_count++; | |
1105 | object_count_by_type[type]++; | |
1106 | ||
1107 | crc32_begin(pack_file); | |
1108 | ||
1109 | if (delta) { | |
1110 | off_t ofs = e->idx.offset - last->offset; | |
1111 | unsigned pos = sizeof(hdr) - 1; | |
1112 | ||
1113 | delta_count_by_type[type]++; | |
1114 | e->depth = last->depth + 1; | |
1115 | ||
1116 | hdrlen = encode_in_pack_object_header(OBJ_OFS_DELTA, deltalen, hdr); | |
1117 | sha1write(pack_file, hdr, hdrlen); | |
1118 | pack_size += hdrlen; | |
1119 | ||
1120 | hdr[pos] = ofs & 127; | |
1121 | while (ofs >>= 7) | |
1122 | hdr[--pos] = 128 | (--ofs & 127); | |
1123 | sha1write(pack_file, hdr + pos, sizeof(hdr) - pos); | |
1124 | pack_size += sizeof(hdr) - pos; | |
1125 | } else { | |
1126 | e->depth = 0; | |
1127 | hdrlen = encode_in_pack_object_header(type, dat->len, hdr); | |
1128 | sha1write(pack_file, hdr, hdrlen); | |
1129 | pack_size += hdrlen; | |
1130 | } | |
1131 | ||
1132 | sha1write(pack_file, out, s.total_out); | |
1133 | pack_size += s.total_out; | |
1134 | ||
1135 | e->idx.crc32 = crc32_end(pack_file); | |
1136 | ||
1137 | free(out); | |
1138 | free(delta); | |
1139 | if (last) { | |
1140 | if (last->no_swap) { | |
1141 | last->data = *dat; | |
1142 | } else { | |
1143 | strbuf_swap(&last->data, dat); | |
1144 | } | |
1145 | last->offset = e->idx.offset; | |
1146 | last->depth = e->depth; | |
1147 | } | |
1148 | return 0; | |
1149 | } | |
1150 | ||
1151 | static void truncate_pack(off_t to, git_SHA_CTX *ctx) | |
1152 | { | |
1153 | if (ftruncate(pack_data->pack_fd, to) | |
1154 | || lseek(pack_data->pack_fd, to, SEEK_SET) != to) | |
1155 | die_errno("cannot truncate pack to skip duplicate"); | |
1156 | pack_size = to; | |
1157 | ||
1158 | /* yes this is a layering violation */ | |
1159 | pack_file->total = to; | |
1160 | pack_file->offset = 0; | |
1161 | pack_file->ctx = *ctx; | |
1162 | } | |
1163 | ||
1164 | static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark) | |
1165 | { | |
1166 | size_t in_sz = 64 * 1024, out_sz = 64 * 1024; | |
1167 | unsigned char *in_buf = xmalloc(in_sz); | |
1168 | unsigned char *out_buf = xmalloc(out_sz); | |
1169 | struct object_entry *e; | |
1170 | unsigned char sha1[20]; | |
1171 | unsigned long hdrlen; | |
1172 | off_t offset; | |
1173 | git_SHA_CTX c; | |
1174 | git_SHA_CTX pack_file_ctx; | |
1175 | z_stream s; | |
1176 | int status = Z_OK; | |
1177 | ||
1178 | /* Determine if we should auto-checkpoint. */ | |
1179 | if ((max_packsize && (pack_size + 60 + len) > max_packsize) | |
1180 | || (pack_size + 60 + len) < pack_size) | |
1181 | cycle_packfile(); | |
1182 | ||
1183 | offset = pack_size; | |
1184 | ||
1185 | /* preserve the pack_file SHA1 ctx in case we have to truncate later */ | |
1186 | sha1flush(pack_file); | |
1187 | pack_file_ctx = pack_file->ctx; | |
1188 | ||
1189 | hdrlen = snprintf((char *)out_buf, out_sz, "blob %" PRIuMAX, len) + 1; | |
1190 | if (out_sz <= hdrlen) | |
1191 | die("impossibly large object header"); | |
1192 | ||
1193 | git_SHA1_Init(&c); | |
1194 | git_SHA1_Update(&c, out_buf, hdrlen); | |
1195 | ||
1196 | crc32_begin(pack_file); | |
1197 | ||
1198 | memset(&s, 0, sizeof(s)); | |
1199 | deflateInit(&s, pack_compression_level); | |
1200 | ||
1201 | hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf); | |
1202 | if (out_sz <= hdrlen) | |
1203 | die("impossibly large object header"); | |
1204 | ||
1205 | s.next_out = out_buf + hdrlen; | |
1206 | s.avail_out = out_sz - hdrlen; | |
1207 | ||
1208 | while (status != Z_STREAM_END) { | |
1209 | if (0 < len && !s.avail_in) { | |
1210 | size_t cnt = in_sz < len ? in_sz : (size_t)len; | |
1211 | size_t n = fread(in_buf, 1, cnt, stdin); | |
1212 | if (!n && feof(stdin)) | |
1213 | die("EOF in data (%" PRIuMAX " bytes remaining)", len); | |
1214 | ||
1215 | git_SHA1_Update(&c, in_buf, n); | |
1216 | s.next_in = in_buf; | |
1217 | s.avail_in = n; | |
1218 | len -= n; | |
1219 | } | |
1220 | ||
1221 | status = deflate(&s, len ? 0 : Z_FINISH); | |
1222 | ||
1223 | if (!s.avail_out || status == Z_STREAM_END) { | |
1224 | size_t n = s.next_out - out_buf; | |
1225 | sha1write(pack_file, out_buf, n); | |
1226 | pack_size += n; | |
1227 | s.next_out = out_buf; | |
1228 | s.avail_out = out_sz; | |
1229 | } | |
1230 | ||
1231 | switch (status) { | |
1232 | case Z_OK: | |
1233 | case Z_BUF_ERROR: | |
1234 | case Z_STREAM_END: | |
1235 | continue; | |
1236 | default: | |
1237 | die("unexpected deflate failure: %d", status); | |
1238 | } | |
1239 | } | |
1240 | deflateEnd(&s); | |
1241 | git_SHA1_Final(sha1, &c); | |
1242 | ||
1243 | if (sha1out) | |
1244 | hashcpy(sha1out, sha1); | |
1245 | ||
1246 | e = insert_object(sha1); | |
1247 | ||
1248 | if (mark) | |
1249 | insert_mark(mark, e); | |
1250 | ||
1251 | if (e->idx.offset) { | |
1252 | duplicate_count_by_type[OBJ_BLOB]++; | |
1253 | truncate_pack(offset, &pack_file_ctx); | |
1254 | ||
1255 | } else if (find_sha1_pack(sha1, packed_git)) { | |
1256 | e->type = OBJ_BLOB; | |
1257 | e->pack_id = MAX_PACK_ID; | |
1258 | e->idx.offset = 1; /* just not zero! */ | |
1259 | duplicate_count_by_type[OBJ_BLOB]++; | |
1260 | truncate_pack(offset, &pack_file_ctx); | |
1261 | ||
1262 | } else { | |
1263 | e->depth = 0; | |
1264 | e->type = OBJ_BLOB; | |
1265 | e->pack_id = pack_id; | |
1266 | e->idx.offset = offset; | |
1267 | e->idx.crc32 = crc32_end(pack_file); | |
1268 | object_count++; | |
1269 | object_count_by_type[OBJ_BLOB]++; | |
1270 | } | |
1271 | ||
1272 | free(in_buf); | |
1273 | free(out_buf); | |
1274 | } | |
1275 | ||
1276 | /* All calls must be guarded by find_object() or find_mark() to | |
1277 | * ensure the 'struct object_entry' passed was written by this | |
1278 | * process instance. We unpack the entry by the offset, avoiding | |
1279 | * the need for the corresponding .idx file. This unpacking rule | |
1280 | * works because we only use OBJ_REF_DELTA within the packfiles | |
1281 | * created by fast-import. | |
1282 | * | |
1283 | * oe must not be NULL. Such an oe usually comes from giving | |
1284 | * an unknown SHA-1 to find_object() or an undefined mark to | |
1285 | * find_mark(). Callers must test for this condition and use | |
1286 | * the standard read_sha1_file() when it happens. | |
1287 | * | |
1288 | * oe->pack_id must not be MAX_PACK_ID. Such an oe is usually from | |
1289 | * find_mark(), where the mark was reloaded from an existing marks | |
1290 | * file and is referencing an object that this fast-import process | |
1291 | * instance did not write out to a packfile. Callers must test for | |
1292 | * this condition and use read_sha1_file() instead. | |
1293 | */ | |
1294 | static void *gfi_unpack_entry( | |
1295 | struct object_entry *oe, | |
1296 | unsigned long *sizep) | |
1297 | { | |
1298 | enum object_type type; | |
1299 | struct packed_git *p = all_packs[oe->pack_id]; | |
1300 | if (p == pack_data && p->pack_size < (pack_size + 20)) { | |
1301 | /* The object is stored in the packfile we are writing to | |
1302 | * and we have modified it since the last time we scanned | |
1303 | * back to read a previously written object. If an old | |
1304 | * window covered [p->pack_size, p->pack_size + 20) its | |
1305 | * data is stale and is not valid. Closing all windows | |
1306 | * and updating the packfile length ensures we can read | |
1307 | * the newly written data. | |
1308 | */ | |
1309 | close_pack_windows(p); | |
1310 | sha1flush(pack_file); | |
1311 | ||
1312 | /* We have to offer 20 bytes additional on the end of | |
1313 | * the packfile as the core unpacker code assumes the | |
1314 | * footer is present at the file end and must promise | |
1315 | * at least 20 bytes within any window it maps. But | |
1316 | * we don't actually create the footer here. | |
1317 | */ | |
1318 | p->pack_size = pack_size + 20; | |
1319 | } | |
1320 | return unpack_entry(p, oe->idx.offset, &type, sizep); | |
1321 | } | |
1322 | ||
1323 | static const char *get_mode(const char *str, uint16_t *modep) | |
1324 | { | |
1325 | unsigned char c; | |
1326 | uint16_t mode = 0; | |
1327 | ||
1328 | while ((c = *str++) != ' ') { | |
1329 | if (c < '0' || c > '7') | |
1330 | return NULL; | |
1331 | mode = (mode << 3) + (c - '0'); | |
1332 | } | |
1333 | *modep = mode; | |
1334 | return str; | |
1335 | } | |
1336 | ||
1337 | static void load_tree(struct tree_entry *root) | |
1338 | { | |
1339 | unsigned char *sha1 = root->versions[1].sha1; | |
1340 | struct object_entry *myoe; | |
1341 | struct tree_content *t; | |
1342 | unsigned long size; | |
1343 | char *buf; | |
1344 | const char *c; | |
1345 | ||
1346 | root->tree = t = new_tree_content(8); | |
1347 | if (is_null_sha1(sha1)) | |
1348 | return; | |
1349 | ||
1350 | myoe = find_object(sha1); | |
1351 | if (myoe && myoe->pack_id != MAX_PACK_ID) { | |
1352 | if (myoe->type != OBJ_TREE) | |
1353 | die("Not a tree: %s", sha1_to_hex(sha1)); | |
1354 | t->delta_depth = myoe->depth; | |
1355 | buf = gfi_unpack_entry(myoe, &size); | |
1356 | if (!buf) | |
1357 | die("Can't load tree %s", sha1_to_hex(sha1)); | |
1358 | } else { | |
1359 | enum object_type type; | |
1360 | buf = read_sha1_file(sha1, &type, &size); | |
1361 | if (!buf || type != OBJ_TREE) | |
1362 | die("Can't load tree %s", sha1_to_hex(sha1)); | |
1363 | } | |
1364 | ||
1365 | c = buf; | |
1366 | while (c != (buf + size)) { | |
1367 | struct tree_entry *e = new_tree_entry(); | |
1368 | ||
1369 | if (t->entry_count == t->entry_capacity) | |
1370 | root->tree = t = grow_tree_content(t, t->entry_count); | |
1371 | t->entries[t->entry_count++] = e; | |
1372 | ||
1373 | e->tree = NULL; | |
1374 | c = get_mode(c, &e->versions[1].mode); | |
1375 | if (!c) | |
1376 | die("Corrupt mode in %s", sha1_to_hex(sha1)); | |
1377 | e->versions[0].mode = e->versions[1].mode; | |
1378 | e->name = to_atom(c, strlen(c)); | |
1379 | c += e->name->str_len + 1; | |
1380 | hashcpy(e->versions[0].sha1, (unsigned char *)c); | |
1381 | hashcpy(e->versions[1].sha1, (unsigned char *)c); | |
1382 | c += 20; | |
1383 | } | |
1384 | free(buf); | |
1385 | } | |
1386 | ||
1387 | static int tecmp0 (const void *_a, const void *_b) | |
1388 | { | |
1389 | struct tree_entry *a = *((struct tree_entry**)_a); | |
1390 | struct tree_entry *b = *((struct tree_entry**)_b); | |
1391 | return base_name_compare( | |
1392 | a->name->str_dat, a->name->str_len, a->versions[0].mode, | |
1393 | b->name->str_dat, b->name->str_len, b->versions[0].mode); | |
1394 | } | |
1395 | ||
1396 | static int tecmp1 (const void *_a, const void *_b) | |
1397 | { | |
1398 | struct tree_entry *a = *((struct tree_entry**)_a); | |
1399 | struct tree_entry *b = *((struct tree_entry**)_b); | |
1400 | return base_name_compare( | |
1401 | a->name->str_dat, a->name->str_len, a->versions[1].mode, | |
1402 | b->name->str_dat, b->name->str_len, b->versions[1].mode); | |
1403 | } | |
1404 | ||
1405 | static void mktree(struct tree_content *t, int v, struct strbuf *b) | |
1406 | { | |
1407 | size_t maxlen = 0; | |
1408 | unsigned int i; | |
1409 | ||
1410 | if (!v) | |
1411 | qsort(t->entries,t->entry_count,sizeof(t->entries[0]),tecmp0); | |
1412 | else | |
1413 | qsort(t->entries,t->entry_count,sizeof(t->entries[0]),tecmp1); | |
1414 | ||
1415 | for (i = 0; i < t->entry_count; i++) { | |
1416 | if (t->entries[i]->versions[v].mode) | |
1417 | maxlen += t->entries[i]->name->str_len + 34; | |
1418 | } | |
1419 | ||
1420 | strbuf_reset(b); | |
1421 | strbuf_grow(b, maxlen); | |
1422 | for (i = 0; i < t->entry_count; i++) { | |
1423 | struct tree_entry *e = t->entries[i]; | |
1424 | if (!e->versions[v].mode) | |
1425 | continue; | |
1426 | strbuf_addf(b, "%o %s%c", (unsigned int)e->versions[v].mode, | |
1427 | e->name->str_dat, '\0'); | |
1428 | strbuf_add(b, e->versions[v].sha1, 20); | |
1429 | } | |
1430 | } | |
1431 | ||
1432 | static void store_tree(struct tree_entry *root) | |
1433 | { | |
1434 | struct tree_content *t = root->tree; | |
1435 | unsigned int i, j, del; | |
1436 | struct last_object lo = { STRBUF_INIT, 0, 0, /* no_swap */ 1 }; | |
1437 | struct object_entry *le; | |
1438 | ||
1439 | if (!is_null_sha1(root->versions[1].sha1)) | |
1440 | return; | |
1441 | ||
1442 | for (i = 0; i < t->entry_count; i++) { | |
1443 | if (t->entries[i]->tree) | |
1444 | store_tree(t->entries[i]); | |
1445 | } | |
1446 | ||
1447 | le = find_object(root->versions[0].sha1); | |
1448 | if (S_ISDIR(root->versions[0].mode) && le && le->pack_id == pack_id) { | |
1449 | mktree(t, 0, &old_tree); | |
1450 | lo.data = old_tree; | |
1451 | lo.offset = le->idx.offset; | |
1452 | lo.depth = t->delta_depth; | |
1453 | } | |
1454 | ||
1455 | mktree(t, 1, &new_tree); | |
1456 | store_object(OBJ_TREE, &new_tree, &lo, root->versions[1].sha1, 0); | |
1457 | ||
1458 | t->delta_depth = lo.depth; | |
1459 | for (i = 0, j = 0, del = 0; i < t->entry_count; i++) { | |
1460 | struct tree_entry *e = t->entries[i]; | |
1461 | if (e->versions[1].mode) { | |
1462 | e->versions[0].mode = e->versions[1].mode; | |
1463 | hashcpy(e->versions[0].sha1, e->versions[1].sha1); | |
1464 | t->entries[j++] = e; | |
1465 | } else { | |
1466 | release_tree_entry(e); | |
1467 | del++; | |
1468 | } | |
1469 | } | |
1470 | t->entry_count -= del; | |
1471 | } | |
1472 | ||
1473 | static void tree_content_replace( | |
1474 | struct tree_entry *root, | |
1475 | const unsigned char *sha1, | |
1476 | const uint16_t mode, | |
1477 | struct tree_content *newtree) | |
1478 | { | |
1479 | if (!S_ISDIR(mode)) | |
1480 | die("Root cannot be a non-directory"); | |
1481 | hashcpy(root->versions[1].sha1, sha1); | |
1482 | if (root->tree) | |
1483 | release_tree_content_recursive(root->tree); | |
1484 | root->tree = newtree; | |
1485 | } | |
1486 | ||
1487 | static int tree_content_set( | |
1488 | struct tree_entry *root, | |
1489 | const char *p, | |
1490 | const unsigned char *sha1, | |
1491 | const uint16_t mode, | |
1492 | struct tree_content *subtree) | |
1493 | { | |
1494 | struct tree_content *t; | |
1495 | const char *slash1; | |
1496 | unsigned int i, n; | |
1497 | struct tree_entry *e; | |
1498 | ||
1499 | slash1 = strchr(p, '/'); | |
1500 | if (slash1) | |
1501 | n = slash1 - p; | |
1502 | else | |
1503 | n = strlen(p); | |
1504 | if (!n) | |
1505 | die("Empty path component found in input"); | |
1506 | if (!slash1 && !S_ISDIR(mode) && subtree) | |
1507 | die("Non-directories cannot have subtrees"); | |
1508 | ||
1509 | if (!root->tree) | |
1510 | load_tree(root); | |
1511 | t = root->tree; | |
1512 | for (i = 0; i < t->entry_count; i++) { | |
1513 | e = t->entries[i]; | |
1514 | if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) { | |
1515 | if (!slash1) { | |
1516 | if (!S_ISDIR(mode) | |
1517 | && e->versions[1].mode == mode | |
1518 | && !hashcmp(e->versions[1].sha1, sha1)) | |
1519 | return 0; | |
1520 | e->versions[1].mode = mode; | |
1521 | hashcpy(e->versions[1].sha1, sha1); | |
1522 | if (e->tree) | |
1523 | release_tree_content_recursive(e->tree); | |
1524 | e->tree = subtree; | |
1525 | hashclr(root->versions[1].sha1); | |
1526 | return 1; | |
1527 | } | |
1528 | if (!S_ISDIR(e->versions[1].mode)) { | |
1529 | e->tree = new_tree_content(8); | |
1530 | e->versions[1].mode = S_IFDIR; | |
1531 | } | |
1532 | if (!e->tree) | |
1533 | load_tree(e); | |
1534 | if (tree_content_set(e, slash1 + 1, sha1, mode, subtree)) { | |
1535 | hashclr(root->versions[1].sha1); | |
1536 | return 1; | |
1537 | } | |
1538 | return 0; | |
1539 | } | |
1540 | } | |
1541 | ||
1542 | if (t->entry_count == t->entry_capacity) | |
1543 | root->tree = t = grow_tree_content(t, t->entry_count); | |
1544 | e = new_tree_entry(); | |
1545 | e->name = to_atom(p, n); | |
1546 | e->versions[0].mode = 0; | |
1547 | hashclr(e->versions[0].sha1); | |
1548 | t->entries[t->entry_count++] = e; | |
1549 | if (slash1) { | |
1550 | e->tree = new_tree_content(8); | |
1551 | e->versions[1].mode = S_IFDIR; | |
1552 | tree_content_set(e, slash1 + 1, sha1, mode, subtree); | |
1553 | } else { | |
1554 | e->tree = subtree; | |
1555 | e->versions[1].mode = mode; | |
1556 | hashcpy(e->versions[1].sha1, sha1); | |
1557 | } | |
1558 | hashclr(root->versions[1].sha1); | |
1559 | return 1; | |
1560 | } | |
1561 | ||
1562 | static int tree_content_remove( | |
1563 | struct tree_entry *root, | |
1564 | const char *p, | |
1565 | struct tree_entry *backup_leaf) | |
1566 | { | |
1567 | struct tree_content *t; | |
1568 | const char *slash1; | |
1569 | unsigned int i, n; | |
1570 | struct tree_entry *e; | |
1571 | ||
1572 | slash1 = strchr(p, '/'); | |
1573 | if (slash1) | |
1574 | n = slash1 - p; | |
1575 | else | |
1576 | n = strlen(p); | |
1577 | ||
1578 | if (!root->tree) | |
1579 | load_tree(root); | |
1580 | t = root->tree; | |
1581 | for (i = 0; i < t->entry_count; i++) { | |
1582 | e = t->entries[i]; | |
1583 | if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) { | |
1584 | if (slash1 && !S_ISDIR(e->versions[1].mode)) | |
1585 | /* | |
1586 | * If p names a file in some subdirectory, and a | |
1587 | * file or symlink matching the name of the | |
1588 | * parent directory of p exists, then p cannot | |
1589 | * exist and need not be deleted. | |
1590 | */ | |
1591 | return 1; | |
1592 | if (!slash1 || !S_ISDIR(e->versions[1].mode)) | |
1593 | goto del_entry; | |
1594 | if (!e->tree) | |
1595 | load_tree(e); | |
1596 | if (tree_content_remove(e, slash1 + 1, backup_leaf)) { | |
1597 | for (n = 0; n < e->tree->entry_count; n++) { | |
1598 | if (e->tree->entries[n]->versions[1].mode) { | |
1599 | hashclr(root->versions[1].sha1); | |
1600 | return 1; | |
1601 | } | |
1602 | } | |
1603 | backup_leaf = NULL; | |
1604 | goto del_entry; | |
1605 | } | |
1606 | return 0; | |
1607 | } | |
1608 | } | |
1609 | return 0; | |
1610 | ||
1611 | del_entry: | |
1612 | if (backup_leaf) | |
1613 | memcpy(backup_leaf, e, sizeof(*backup_leaf)); | |
1614 | else if (e->tree) | |
1615 | release_tree_content_recursive(e->tree); | |
1616 | e->tree = NULL; | |
1617 | e->versions[1].mode = 0; | |
1618 | hashclr(e->versions[1].sha1); | |
1619 | hashclr(root->versions[1].sha1); | |
1620 | return 1; | |
1621 | } | |
1622 | ||
1623 | static int tree_content_get( | |
1624 | struct tree_entry *root, | |
1625 | const char *p, | |
1626 | struct tree_entry *leaf) | |
1627 | { | |
1628 | struct tree_content *t; | |
1629 | const char *slash1; | |
1630 | unsigned int i, n; | |
1631 | struct tree_entry *e; | |
1632 | ||
1633 | slash1 = strchr(p, '/'); | |
1634 | if (slash1) | |
1635 | n = slash1 - p; | |
1636 | else | |
1637 | n = strlen(p); | |
1638 | ||
1639 | if (!root->tree) | |
1640 | load_tree(root); | |
1641 | t = root->tree; | |
1642 | for (i = 0; i < t->entry_count; i++) { | |
1643 | e = t->entries[i]; | |
1644 | if (e->name->str_len == n && !strncmp_icase(p, e->name->str_dat, n)) { | |
1645 | if (!slash1) { | |
1646 | memcpy(leaf, e, sizeof(*leaf)); | |
1647 | if (e->tree && is_null_sha1(e->versions[1].sha1)) | |
1648 | leaf->tree = dup_tree_content(e->tree); | |
1649 | else | |
1650 | leaf->tree = NULL; | |
1651 | return 1; | |
1652 | } | |
1653 | if (!S_ISDIR(e->versions[1].mode)) | |
1654 | return 0; | |
1655 | if (!e->tree) | |
1656 | load_tree(e); | |
1657 | return tree_content_get(e, slash1 + 1, leaf); | |
1658 | } | |
1659 | } | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | static int update_branch(struct branch *b) | |
1664 | { | |
1665 | static const char *msg = "fast-import"; | |
1666 | struct ref_lock *lock; | |
1667 | unsigned char old_sha1[20]; | |
1668 | ||
1669 | if (is_null_sha1(b->sha1)) | |
1670 | return 0; | |
1671 | if (read_ref(b->name, old_sha1)) | |
1672 | hashclr(old_sha1); | |
1673 | lock = lock_any_ref_for_update(b->name, old_sha1, 0); | |
1674 | if (!lock) | |
1675 | return error("Unable to lock %s", b->name); | |
1676 | if (!force_update && !is_null_sha1(old_sha1)) { | |
1677 | struct commit *old_cmit, *new_cmit; | |
1678 | ||
1679 | old_cmit = lookup_commit_reference_gently(old_sha1, 0); | |
1680 | new_cmit = lookup_commit_reference_gently(b->sha1, 0); | |
1681 | if (!old_cmit || !new_cmit) { | |
1682 | unlock_ref(lock); | |
1683 | return error("Branch %s is missing commits.", b->name); | |
1684 | } | |
1685 | ||
1686 | if (!in_merge_bases(old_cmit, &new_cmit, 1)) { | |
1687 | unlock_ref(lock); | |
1688 | warning("Not updating %s" | |
1689 | " (new tip %s does not contain %s)", | |
1690 | b->name, sha1_to_hex(b->sha1), sha1_to_hex(old_sha1)); | |
1691 | return -1; | |
1692 | } | |
1693 | } | |
1694 | if (write_ref_sha1(lock, b->sha1, msg) < 0) | |
1695 | return error("Unable to update %s", b->name); | |
1696 | return 0; | |
1697 | } | |
1698 | ||
1699 | static void dump_branches(void) | |
1700 | { | |
1701 | unsigned int i; | |
1702 | struct branch *b; | |
1703 | ||
1704 | for (i = 0; i < branch_table_sz; i++) { | |
1705 | for (b = branch_table[i]; b; b = b->table_next_branch) | |
1706 | failure |= update_branch(b); | |
1707 | } | |
1708 | } | |
1709 | ||
1710 | static void dump_tags(void) | |
1711 | { | |
1712 | static const char *msg = "fast-import"; | |
1713 | struct tag *t; | |
1714 | struct ref_lock *lock; | |
1715 | char ref_name[PATH_MAX]; | |
1716 | ||
1717 | for (t = first_tag; t; t = t->next_tag) { | |
1718 | sprintf(ref_name, "tags/%s", t->name); | |
1719 | lock = lock_ref_sha1(ref_name, NULL); | |
1720 | if (!lock || write_ref_sha1(lock, t->sha1, msg) < 0) | |
1721 | failure |= error("Unable to update %s", ref_name); | |
1722 | } | |
1723 | } | |
1724 | ||
1725 | static void dump_marks_helper(FILE *f, | |
1726 | uintmax_t base, | |
1727 | struct mark_set *m) | |
1728 | { | |
1729 | uintmax_t k; | |
1730 | if (m->shift) { | |
1731 | for (k = 0; k < 1024; k++) { | |
1732 | if (m->data.sets[k]) | |
1733 | dump_marks_helper(f, base + (k << m->shift), | |
1734 | m->data.sets[k]); | |
1735 | } | |
1736 | } else { | |
1737 | for (k = 0; k < 1024; k++) { | |
1738 | if (m->data.marked[k]) | |
1739 | fprintf(f, ":%" PRIuMAX " %s\n", base + k, | |
1740 | sha1_to_hex(m->data.marked[k]->idx.sha1)); | |
1741 | } | |
1742 | } | |
1743 | } | |
1744 | ||
1745 | static void dump_marks(void) | |
1746 | { | |
1747 | static struct lock_file mark_lock; | |
1748 | int mark_fd; | |
1749 | FILE *f; | |
1750 | ||
1751 | if (!export_marks_file) | |
1752 | return; | |
1753 | ||
1754 | mark_fd = hold_lock_file_for_update(&mark_lock, export_marks_file, 0); | |
1755 | if (mark_fd < 0) { | |
1756 | failure |= error("Unable to write marks file %s: %s", | |
1757 | export_marks_file, strerror(errno)); | |
1758 | return; | |
1759 | } | |
1760 | ||
1761 | f = fdopen(mark_fd, "w"); | |
1762 | if (!f) { | |
1763 | int saved_errno = errno; | |
1764 | rollback_lock_file(&mark_lock); | |
1765 | failure |= error("Unable to write marks file %s: %s", | |
1766 | export_marks_file, strerror(saved_errno)); | |
1767 | return; | |
1768 | } | |
1769 | ||
1770 | /* | |
1771 | * Since the lock file was fdopen()'ed, it should not be close()'ed. | |
1772 | * Assign -1 to the lock file descriptor so that commit_lock_file() | |
1773 | * won't try to close() it. | |
1774 | */ | |
1775 | mark_lock.fd = -1; | |
1776 | ||
1777 | dump_marks_helper(f, 0, marks); | |
1778 | if (ferror(f) || fclose(f)) { | |
1779 | int saved_errno = errno; | |
1780 | rollback_lock_file(&mark_lock); | |
1781 | failure |= error("Unable to write marks file %s: %s", | |
1782 | export_marks_file, strerror(saved_errno)); | |
1783 | return; | |
1784 | } | |
1785 | ||
1786 | if (commit_lock_file(&mark_lock)) { | |
1787 | int saved_errno = errno; | |
1788 | rollback_lock_file(&mark_lock); | |
1789 | failure |= error("Unable to commit marks file %s: %s", | |
1790 | export_marks_file, strerror(saved_errno)); | |
1791 | return; | |
1792 | } | |
1793 | } | |
1794 | ||
1795 | static void read_marks(void) | |
1796 | { | |
1797 | char line[512]; | |
1798 | FILE *f = fopen(import_marks_file, "r"); | |
1799 | if (f) | |
1800 | ; | |
1801 | else if (import_marks_file_ignore_missing && errno == ENOENT) | |
1802 | return; /* Marks file does not exist */ | |
1803 | else | |
1804 | die_errno("cannot read '%s'", import_marks_file); | |
1805 | while (fgets(line, sizeof(line), f)) { | |
1806 | uintmax_t mark; | |
1807 | char *end; | |
1808 | unsigned char sha1[20]; | |
1809 | struct object_entry *e; | |
1810 | ||
1811 | end = strchr(line, '\n'); | |
1812 | if (line[0] != ':' || !end) | |
1813 | die("corrupt mark line: %s", line); | |
1814 | *end = 0; | |
1815 | mark = strtoumax(line + 1, &end, 10); | |
1816 | if (!mark || end == line + 1 | |
1817 | || *end != ' ' || get_sha1(end + 1, sha1)) | |
1818 | die("corrupt mark line: %s", line); | |
1819 | e = find_object(sha1); | |
1820 | if (!e) { | |
1821 | enum object_type type = sha1_object_info(sha1, NULL); | |
1822 | if (type < 0) | |
1823 | die("object not found: %s", sha1_to_hex(sha1)); | |
1824 | e = insert_object(sha1); | |
1825 | e->type = type; | |
1826 | e->pack_id = MAX_PACK_ID; | |
1827 | e->idx.offset = 1; /* just not zero! */ | |
1828 | } | |
1829 | insert_mark(mark, e); | |
1830 | } | |
1831 | fclose(f); | |
1832 | } | |
1833 | ||
1834 | ||
1835 | static int read_next_command(void) | |
1836 | { | |
1837 | static int stdin_eof = 0; | |
1838 | ||
1839 | if (stdin_eof) { | |
1840 | unread_command_buf = 0; | |
1841 | return EOF; | |
1842 | } | |
1843 | ||
1844 | for (;;) { | |
1845 | if (unread_command_buf) { | |
1846 | unread_command_buf = 0; | |
1847 | } else { | |
1848 | struct recent_command *rc; | |
1849 | ||
1850 | strbuf_detach(&command_buf, NULL); | |
1851 | stdin_eof = strbuf_getline(&command_buf, stdin, '\n'); | |
1852 | if (stdin_eof) | |
1853 | return EOF; | |
1854 | ||
1855 | if (!seen_data_command | |
1856 | && prefixcmp(command_buf.buf, "feature ") | |
1857 | && prefixcmp(command_buf.buf, "option ")) { | |
1858 | parse_argv(); | |
1859 | } | |
1860 | ||
1861 | rc = rc_free; | |
1862 | if (rc) | |
1863 | rc_free = rc->next; | |
1864 | else { | |
1865 | rc = cmd_hist.next; | |
1866 | cmd_hist.next = rc->next; | |
1867 | cmd_hist.next->prev = &cmd_hist; | |
1868 | free(rc->buf); | |
1869 | } | |
1870 | ||
1871 | rc->buf = command_buf.buf; | |
1872 | rc->prev = cmd_tail; | |
1873 | rc->next = cmd_hist.prev; | |
1874 | rc->prev->next = rc; | |
1875 | cmd_tail = rc; | |
1876 | } | |
1877 | if (!prefixcmp(command_buf.buf, "cat-blob ")) { | |
1878 | parse_cat_blob(); | |
1879 | continue; | |
1880 | } | |
1881 | if (command_buf.buf[0] == '#') | |
1882 | continue; | |
1883 | return 0; | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | static void skip_optional_lf(void) | |
1888 | { | |
1889 | int term_char = fgetc(stdin); | |
1890 | if (term_char != '\n' && term_char != EOF) | |
1891 | ungetc(term_char, stdin); | |
1892 | } | |
1893 | ||
1894 | static void parse_mark(void) | |
1895 | { | |
1896 | if (!prefixcmp(command_buf.buf, "mark :")) { | |
1897 | next_mark = strtoumax(command_buf.buf + 6, NULL, 10); | |
1898 | read_next_command(); | |
1899 | } | |
1900 | else | |
1901 | next_mark = 0; | |
1902 | } | |
1903 | ||
1904 | static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res) | |
1905 | { | |
1906 | strbuf_reset(sb); | |
1907 | ||
1908 | if (prefixcmp(command_buf.buf, "data ")) | |
1909 | die("Expected 'data n' command, found: %s", command_buf.buf); | |
1910 | ||
1911 | if (!prefixcmp(command_buf.buf + 5, "<<")) { | |
1912 | char *term = xstrdup(command_buf.buf + 5 + 2); | |
1913 | size_t term_len = command_buf.len - 5 - 2; | |
1914 | ||
1915 | strbuf_detach(&command_buf, NULL); | |
1916 | for (;;) { | |
1917 | if (strbuf_getline(&command_buf, stdin, '\n') == EOF) | |
1918 | die("EOF in data (terminator '%s' not found)", term); | |
1919 | if (term_len == command_buf.len | |
1920 | && !strcmp(term, command_buf.buf)) | |
1921 | break; | |
1922 | strbuf_addbuf(sb, &command_buf); | |
1923 | strbuf_addch(sb, '\n'); | |
1924 | } | |
1925 | free(term); | |
1926 | } | |
1927 | else { | |
1928 | uintmax_t len = strtoumax(command_buf.buf + 5, NULL, 10); | |
1929 | size_t n = 0, length = (size_t)len; | |
1930 | ||
1931 | if (limit && limit < len) { | |
1932 | *len_res = len; | |
1933 | return 0; | |
1934 | } | |
1935 | if (length < len) | |
1936 | die("data is too large to use in this context"); | |
1937 | ||
1938 | while (n < length) { | |
1939 | size_t s = strbuf_fread(sb, length - n, stdin); | |
1940 | if (!s && feof(stdin)) | |
1941 | die("EOF in data (%lu bytes remaining)", | |
1942 | (unsigned long)(length - n)); | |
1943 | n += s; | |
1944 | } | |
1945 | } | |
1946 | ||
1947 | skip_optional_lf(); | |
1948 | return 1; | |
1949 | } | |
1950 | ||
1951 | static int validate_raw_date(const char *src, char *result, int maxlen) | |
1952 | { | |
1953 | const char *orig_src = src; | |
1954 | char *endp; | |
1955 | unsigned long num; | |
1956 | ||
1957 | errno = 0; | |
1958 | ||
1959 | num = strtoul(src, &endp, 10); | |
1960 | /* NEEDSWORK: perhaps check for reasonable values? */ | |
1961 | if (errno || endp == src || *endp != ' ') | |
1962 | return -1; | |
1963 | ||
1964 | src = endp + 1; | |
1965 | if (*src != '-' && *src != '+') | |
1966 | return -1; | |
1967 | ||
1968 | num = strtoul(src + 1, &endp, 10); | |
1969 | if (errno || endp == src + 1 || *endp || (endp - orig_src) >= maxlen || | |
1970 | 1400 < num) | |
1971 | return -1; | |
1972 | ||
1973 | strcpy(result, orig_src); | |
1974 | return 0; | |
1975 | } | |
1976 | ||
1977 | static char *parse_ident(const char *buf) | |
1978 | { | |
1979 | const char *gt; | |
1980 | size_t name_len; | |
1981 | char *ident; | |
1982 | ||
1983 | gt = strrchr(buf, '>'); | |
1984 | if (!gt) | |
1985 | die("Missing > in ident string: %s", buf); | |
1986 | gt++; | |
1987 | if (*gt != ' ') | |
1988 | die("Missing space after > in ident string: %s", buf); | |
1989 | gt++; | |
1990 | name_len = gt - buf; | |
1991 | ident = xmalloc(name_len + 24); | |
1992 | strncpy(ident, buf, name_len); | |
1993 | ||
1994 | switch (whenspec) { | |
1995 | case WHENSPEC_RAW: | |
1996 | if (validate_raw_date(gt, ident + name_len, 24) < 0) | |
1997 | die("Invalid raw date \"%s\" in ident: %s", gt, buf); | |
1998 | break; | |
1999 | case WHENSPEC_RFC2822: | |
2000 | if (parse_date(gt, ident + name_len, 24) < 0) | |
2001 | die("Invalid rfc2822 date \"%s\" in ident: %s", gt, buf); | |
2002 | break; | |
2003 | case WHENSPEC_NOW: | |
2004 | if (strcmp("now", gt)) | |
2005 | die("Date in ident must be 'now': %s", buf); | |
2006 | datestamp(ident + name_len, 24); | |
2007 | break; | |
2008 | } | |
2009 | ||
2010 | return ident; | |
2011 | } | |
2012 | ||
2013 | static void parse_and_store_blob( | |
2014 | struct last_object *last, | |
2015 | unsigned char *sha1out, | |
2016 | uintmax_t mark) | |
2017 | { | |
2018 | static struct strbuf buf = STRBUF_INIT; | |
2019 | uintmax_t len; | |
2020 | ||
2021 | if (parse_data(&buf, big_file_threshold, &len)) | |
2022 | store_object(OBJ_BLOB, &buf, last, sha1out, mark); | |
2023 | else { | |
2024 | if (last) { | |
2025 | strbuf_release(&last->data); | |
2026 | last->offset = 0; | |
2027 | last->depth = 0; | |
2028 | } | |
2029 | stream_blob(len, sha1out, mark); | |
2030 | skip_optional_lf(); | |
2031 | } | |
2032 | } | |
2033 | ||
2034 | static void parse_new_blob(void) | |
2035 | { | |
2036 | read_next_command(); | |
2037 | parse_mark(); | |
2038 | parse_and_store_blob(&last_blob, NULL, next_mark); | |
2039 | } | |
2040 | ||
2041 | static void unload_one_branch(void) | |
2042 | { | |
2043 | while (cur_active_branches | |
2044 | && cur_active_branches >= max_active_branches) { | |
2045 | uintmax_t min_commit = ULONG_MAX; | |
2046 | struct branch *e, *l = NULL, *p = NULL; | |
2047 | ||
2048 | for (e = active_branches; e; e = e->active_next_branch) { | |
2049 | if (e->last_commit < min_commit) { | |
2050 | p = l; | |
2051 | min_commit = e->last_commit; | |
2052 | } | |
2053 | l = e; | |
2054 | } | |
2055 | ||
2056 | if (p) { | |
2057 | e = p->active_next_branch; | |
2058 | p->active_next_branch = e->active_next_branch; | |
2059 | } else { | |
2060 | e = active_branches; | |
2061 | active_branches = e->active_next_branch; | |
2062 | } | |
2063 | e->active = 0; | |
2064 | e->active_next_branch = NULL; | |
2065 | if (e->branch_tree.tree) { | |
2066 | release_tree_content_recursive(e->branch_tree.tree); | |
2067 | e->branch_tree.tree = NULL; | |
2068 | } | |
2069 | cur_active_branches--; | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | static void load_branch(struct branch *b) | |
2074 | { | |
2075 | load_tree(&b->branch_tree); | |
2076 | if (!b->active) { | |
2077 | b->active = 1; | |
2078 | b->active_next_branch = active_branches; | |
2079 | active_branches = b; | |
2080 | cur_active_branches++; | |
2081 | branch_load_count++; | |
2082 | } | |
2083 | } | |
2084 | ||
2085 | static unsigned char convert_num_notes_to_fanout(uintmax_t num_notes) | |
2086 | { | |
2087 | unsigned char fanout = 0; | |
2088 | while ((num_notes >>= 8)) | |
2089 | fanout++; | |
2090 | return fanout; | |
2091 | } | |
2092 | ||
2093 | static void construct_path_with_fanout(const char *hex_sha1, | |
2094 | unsigned char fanout, char *path) | |
2095 | { | |
2096 | unsigned int i = 0, j = 0; | |
2097 | if (fanout >= 20) | |
2098 | die("Too large fanout (%u)", fanout); | |
2099 | while (fanout) { | |
2100 | path[i++] = hex_sha1[j++]; | |
2101 | path[i++] = hex_sha1[j++]; | |
2102 | path[i++] = '/'; | |
2103 | fanout--; | |
2104 | } | |
2105 | memcpy(path + i, hex_sha1 + j, 40 - j); | |
2106 | path[i + 40 - j] = '\0'; | |
2107 | } | |
2108 | ||
2109 | static uintmax_t do_change_note_fanout( | |
2110 | struct tree_entry *orig_root, struct tree_entry *root, | |
2111 | char *hex_sha1, unsigned int hex_sha1_len, | |
2112 | char *fullpath, unsigned int fullpath_len, | |
2113 | unsigned char fanout) | |
2114 | { | |
2115 | struct tree_content *t = root->tree; | |
2116 | struct tree_entry *e, leaf; | |
2117 | unsigned int i, tmp_hex_sha1_len, tmp_fullpath_len; | |
2118 | uintmax_t num_notes = 0; | |
2119 | unsigned char sha1[20]; | |
2120 | char realpath[60]; | |
2121 | ||
2122 | for (i = 0; t && i < t->entry_count; i++) { | |
2123 | e = t->entries[i]; | |
2124 | tmp_hex_sha1_len = hex_sha1_len + e->name->str_len; | |
2125 | tmp_fullpath_len = fullpath_len; | |
2126 | ||
2127 | /* | |
2128 | * We're interested in EITHER existing note entries (entries | |
2129 | * with exactly 40 hex chars in path, not including directory | |
2130 | * separators), OR directory entries that may contain note | |
2131 | * entries (with < 40 hex chars in path). | |
2132 | * Also, each path component in a note entry must be a multiple | |
2133 | * of 2 chars. | |
2134 | */ | |
2135 | if (!e->versions[1].mode || | |
2136 | tmp_hex_sha1_len > 40 || | |
2137 | e->name->str_len % 2) | |
2138 | continue; | |
2139 | ||
2140 | /* This _may_ be a note entry, or a subdir containing notes */ | |
2141 | memcpy(hex_sha1 + hex_sha1_len, e->name->str_dat, | |
2142 | e->name->str_len); | |
2143 | if (tmp_fullpath_len) | |
2144 | fullpath[tmp_fullpath_len++] = '/'; | |
2145 | memcpy(fullpath + tmp_fullpath_len, e->name->str_dat, | |
2146 | e->name->str_len); | |
2147 | tmp_fullpath_len += e->name->str_len; | |
2148 | fullpath[tmp_fullpath_len] = '\0'; | |
2149 | ||
2150 | if (tmp_hex_sha1_len == 40 && !get_sha1_hex(hex_sha1, sha1)) { | |
2151 | /* This is a note entry */ | |
2152 | construct_path_with_fanout(hex_sha1, fanout, realpath); | |
2153 | if (!strcmp(fullpath, realpath)) { | |
2154 | /* Note entry is in correct location */ | |
2155 | num_notes++; | |
2156 | continue; | |
2157 | } | |
2158 | ||
2159 | /* Rename fullpath to realpath */ | |
2160 | if (!tree_content_remove(orig_root, fullpath, &leaf)) | |
2161 | die("Failed to remove path %s", fullpath); | |
2162 | tree_content_set(orig_root, realpath, | |
2163 | leaf.versions[1].sha1, | |
2164 | leaf.versions[1].mode, | |
2165 | leaf.tree); | |
2166 | } else if (S_ISDIR(e->versions[1].mode)) { | |
2167 | /* This is a subdir that may contain note entries */ | |
2168 | if (!e->tree) | |
2169 | load_tree(e); | |
2170 | num_notes += do_change_note_fanout(orig_root, e, | |
2171 | hex_sha1, tmp_hex_sha1_len, | |
2172 | fullpath, tmp_fullpath_len, fanout); | |
2173 | } | |
2174 | ||
2175 | /* The above may have reallocated the current tree_content */ | |
2176 | t = root->tree; | |
2177 | } | |
2178 | return num_notes; | |
2179 | } | |
2180 | ||
2181 | static uintmax_t change_note_fanout(struct tree_entry *root, | |
2182 | unsigned char fanout) | |
2183 | { | |
2184 | char hex_sha1[40], path[60]; | |
2185 | return do_change_note_fanout(root, root, hex_sha1, 0, path, 0, fanout); | |
2186 | } | |
2187 | ||
2188 | static void file_change_m(struct branch *b) | |
2189 | { | |
2190 | const char *p = command_buf.buf + 2; | |
2191 | static struct strbuf uq = STRBUF_INIT; | |
2192 | const char *endp; | |
2193 | struct object_entry *oe = oe; | |
2194 | unsigned char sha1[20]; | |
2195 | uint16_t mode, inline_data = 0; | |
2196 | ||
2197 | p = get_mode(p, &mode); | |
2198 | if (!p) | |
2199 | die("Corrupt mode: %s", command_buf.buf); | |
2200 | switch (mode) { | |
2201 | case 0644: | |
2202 | case 0755: | |
2203 | mode |= S_IFREG; | |
2204 | case S_IFREG | 0644: | |
2205 | case S_IFREG | 0755: | |
2206 | case S_IFLNK: | |
2207 | case S_IFDIR: | |
2208 | case S_IFGITLINK: | |
2209 | /* ok */ | |
2210 | break; | |
2211 | default: | |
2212 | die("Corrupt mode: %s", command_buf.buf); | |
2213 | } | |
2214 | ||
2215 | if (*p == ':') { | |
2216 | char *x; | |
2217 | oe = find_mark(strtoumax(p + 1, &x, 10)); | |
2218 | hashcpy(sha1, oe->idx.sha1); | |
2219 | p = x; | |
2220 | } else if (!prefixcmp(p, "inline")) { | |
2221 | inline_data = 1; | |
2222 | p += 6; | |
2223 | } else { | |
2224 | if (get_sha1_hex(p, sha1)) | |
2225 | die("Invalid SHA1: %s", command_buf.buf); | |
2226 | oe = find_object(sha1); | |
2227 | p += 40; | |
2228 | } | |
2229 | if (*p++ != ' ') | |
2230 | die("Missing space after SHA1: %s", command_buf.buf); | |
2231 | ||
2232 | strbuf_reset(&uq); | |
2233 | if (!unquote_c_style(&uq, p, &endp)) { | |
2234 | if (*endp) | |
2235 | die("Garbage after path in: %s", command_buf.buf); | |
2236 | p = uq.buf; | |
2237 | } | |
2238 | ||
2239 | /* Git does not track empty, non-toplevel directories. */ | |
2240 | if (S_ISDIR(mode) && !memcmp(sha1, EMPTY_TREE_SHA1_BIN, 20) && *p) { | |
2241 | tree_content_remove(&b->branch_tree, p, NULL); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | if (S_ISGITLINK(mode)) { | |
2246 | if (inline_data) | |
2247 | die("Git links cannot be specified 'inline': %s", | |
2248 | command_buf.buf); | |
2249 | else if (oe) { | |
2250 | if (oe->type != OBJ_COMMIT) | |
2251 | die("Not a commit (actually a %s): %s", | |
2252 | typename(oe->type), command_buf.buf); | |
2253 | } | |
2254 | /* | |
2255 | * Accept the sha1 without checking; it expected to be in | |
2256 | * another repository. | |
2257 | */ | |
2258 | } else if (inline_data) { | |
2259 | if (S_ISDIR(mode)) | |
2260 | die("Directories cannot be specified 'inline': %s", | |
2261 | command_buf.buf); | |
2262 | if (p != uq.buf) { | |
2263 | strbuf_addstr(&uq, p); | |
2264 | p = uq.buf; | |
2265 | } | |
2266 | read_next_command(); | |
2267 | parse_and_store_blob(&last_blob, sha1, 0); | |
2268 | } else { | |
2269 | enum object_type expected = S_ISDIR(mode) ? | |
2270 | OBJ_TREE: OBJ_BLOB; | |
2271 | enum object_type type = oe ? oe->type : | |
2272 | sha1_object_info(sha1, NULL); | |
2273 | if (type < 0) | |
2274 | die("%s not found: %s", | |
2275 | S_ISDIR(mode) ? "Tree" : "Blob", | |
2276 | command_buf.buf); | |
2277 | if (type != expected) | |
2278 | die("Not a %s (actually a %s): %s", | |
2279 | typename(expected), typename(type), | |
2280 | command_buf.buf); | |
2281 | } | |
2282 | ||
2283 | if (!*p) { | |
2284 | tree_content_replace(&b->branch_tree, sha1, mode, NULL); | |
2285 | return; | |
2286 | } | |
2287 | tree_content_set(&b->branch_tree, p, sha1, mode, NULL); | |
2288 | } | |
2289 | ||
2290 | static void file_change_d(struct branch *b) | |
2291 | { | |
2292 | const char *p = command_buf.buf + 2; | |
2293 | static struct strbuf uq = STRBUF_INIT; | |
2294 | const char *endp; | |
2295 | ||
2296 | strbuf_reset(&uq); | |
2297 | if (!unquote_c_style(&uq, p, &endp)) { | |
2298 | if (*endp) | |
2299 | die("Garbage after path in: %s", command_buf.buf); | |
2300 | p = uq.buf; | |
2301 | } | |
2302 | tree_content_remove(&b->branch_tree, p, NULL); | |
2303 | } | |
2304 | ||
2305 | static void file_change_cr(struct branch *b, int rename) | |
2306 | { | |
2307 | const char *s, *d; | |
2308 | static struct strbuf s_uq = STRBUF_INIT; | |
2309 | static struct strbuf d_uq = STRBUF_INIT; | |
2310 | const char *endp; | |
2311 | struct tree_entry leaf; | |
2312 | ||
2313 | s = command_buf.buf + 2; | |
2314 | strbuf_reset(&s_uq); | |
2315 | if (!unquote_c_style(&s_uq, s, &endp)) { | |
2316 | if (*endp != ' ') | |
2317 | die("Missing space after source: %s", command_buf.buf); | |
2318 | } else { | |
2319 | endp = strchr(s, ' '); | |
2320 | if (!endp) | |
2321 | die("Missing space after source: %s", command_buf.buf); | |
2322 | strbuf_add(&s_uq, s, endp - s); | |
2323 | } | |
2324 | s = s_uq.buf; | |
2325 | ||
2326 | endp++; | |
2327 | if (!*endp) | |
2328 | die("Missing dest: %s", command_buf.buf); | |
2329 | ||
2330 | d = endp; | |
2331 | strbuf_reset(&d_uq); | |
2332 | if (!unquote_c_style(&d_uq, d, &endp)) { | |
2333 | if (*endp) | |
2334 | die("Garbage after dest in: %s", command_buf.buf); | |
2335 | d = d_uq.buf; | |
2336 | } | |
2337 | ||
2338 | memset(&leaf, 0, sizeof(leaf)); | |
2339 | if (rename) | |
2340 | tree_content_remove(&b->branch_tree, s, &leaf); | |
2341 | else | |
2342 | tree_content_get(&b->branch_tree, s, &leaf); | |
2343 | if (!leaf.versions[1].mode) | |
2344 | die("Path %s not in branch", s); | |
2345 | if (!*d) { /* C "path/to/subdir" "" */ | |
2346 | tree_content_replace(&b->branch_tree, | |
2347 | leaf.versions[1].sha1, | |
2348 | leaf.versions[1].mode, | |
2349 | leaf.tree); | |
2350 | return; | |
2351 | } | |
2352 | tree_content_set(&b->branch_tree, d, | |
2353 | leaf.versions[1].sha1, | |
2354 | leaf.versions[1].mode, | |
2355 | leaf.tree); | |
2356 | } | |
2357 | ||
2358 | static void note_change_n(struct branch *b, unsigned char old_fanout) | |
2359 | { | |
2360 | const char *p = command_buf.buf + 2; | |
2361 | static struct strbuf uq = STRBUF_INIT; | |
2362 | struct object_entry *oe = oe; | |
2363 | struct branch *s; | |
2364 | unsigned char sha1[20], commit_sha1[20]; | |
2365 | char path[60]; | |
2366 | uint16_t inline_data = 0; | |
2367 | unsigned char new_fanout; | |
2368 | ||
2369 | /* <dataref> or 'inline' */ | |
2370 | if (*p == ':') { | |
2371 | char *x; | |
2372 | oe = find_mark(strtoumax(p + 1, &x, 10)); | |
2373 | hashcpy(sha1, oe->idx.sha1); | |
2374 | p = x; | |
2375 | } else if (!prefixcmp(p, "inline")) { | |
2376 | inline_data = 1; | |
2377 | p += 6; | |
2378 | } else { | |
2379 | if (get_sha1_hex(p, sha1)) | |
2380 | die("Invalid SHA1: %s", command_buf.buf); | |
2381 | oe = find_object(sha1); | |
2382 | p += 40; | |
2383 | } | |
2384 | if (*p++ != ' ') | |
2385 | die("Missing space after SHA1: %s", command_buf.buf); | |
2386 | ||
2387 | /* <committish> */ | |
2388 | s = lookup_branch(p); | |
2389 | if (s) { | |
2390 | hashcpy(commit_sha1, s->sha1); | |
2391 | } else if (*p == ':') { | |
2392 | uintmax_t commit_mark = strtoumax(p + 1, NULL, 10); | |
2393 | struct object_entry *commit_oe = find_mark(commit_mark); | |
2394 | if (commit_oe->type != OBJ_COMMIT) | |
2395 | die("Mark :%" PRIuMAX " not a commit", commit_mark); | |
2396 | hashcpy(commit_sha1, commit_oe->idx.sha1); | |
2397 | } else if (!get_sha1(p, commit_sha1)) { | |
2398 | unsigned long size; | |
2399 | char *buf = read_object_with_reference(commit_sha1, | |
2400 | commit_type, &size, commit_sha1); | |
2401 | if (!buf || size < 46) | |
2402 | die("Not a valid commit: %s", p); | |
2403 | free(buf); | |
2404 | } else | |
2405 | die("Invalid ref name or SHA1 expression: %s", p); | |
2406 | ||
2407 | if (inline_data) { | |
2408 | if (p != uq.buf) { | |
2409 | strbuf_addstr(&uq, p); | |
2410 | p = uq.buf; | |
2411 | } | |
2412 | read_next_command(); | |
2413 | parse_and_store_blob(&last_blob, sha1, 0); | |
2414 | } else if (oe) { | |
2415 | if (oe->type != OBJ_BLOB) | |
2416 | die("Not a blob (actually a %s): %s", | |
2417 | typename(oe->type), command_buf.buf); | |
2418 | } else if (!is_null_sha1(sha1)) { | |
2419 | enum object_type type = sha1_object_info(sha1, NULL); | |
2420 | if (type < 0) | |
2421 | die("Blob not found: %s", command_buf.buf); | |
2422 | if (type != OBJ_BLOB) | |
2423 | die("Not a blob (actually a %s): %s", | |
2424 | typename(type), command_buf.buf); | |
2425 | } | |
2426 | ||
2427 | construct_path_with_fanout(sha1_to_hex(commit_sha1), old_fanout, path); | |
2428 | if (tree_content_remove(&b->branch_tree, path, NULL)) | |
2429 | b->num_notes--; | |
2430 | ||
2431 | if (is_null_sha1(sha1)) | |
2432 | return; /* nothing to insert */ | |
2433 | ||
2434 | b->num_notes++; | |
2435 | new_fanout = convert_num_notes_to_fanout(b->num_notes); | |
2436 | construct_path_with_fanout(sha1_to_hex(commit_sha1), new_fanout, path); | |
2437 | tree_content_set(&b->branch_tree, path, sha1, S_IFREG | 0644, NULL); | |
2438 | } | |
2439 | ||
2440 | static void file_change_deleteall(struct branch *b) | |
2441 | { | |
2442 | release_tree_content_recursive(b->branch_tree.tree); | |
2443 | hashclr(b->branch_tree.versions[0].sha1); | |
2444 | hashclr(b->branch_tree.versions[1].sha1); | |
2445 | load_tree(&b->branch_tree); | |
2446 | b->num_notes = 0; | |
2447 | } | |
2448 | ||
2449 | static void parse_from_commit(struct branch *b, char *buf, unsigned long size) | |
2450 | { | |
2451 | if (!buf || size < 46) | |
2452 | die("Not a valid commit: %s", sha1_to_hex(b->sha1)); | |
2453 | if (memcmp("tree ", buf, 5) | |
2454 | || get_sha1_hex(buf + 5, b->branch_tree.versions[1].sha1)) | |
2455 | die("The commit %s is corrupt", sha1_to_hex(b->sha1)); | |
2456 | hashcpy(b->branch_tree.versions[0].sha1, | |
2457 | b->branch_tree.versions[1].sha1); | |
2458 | } | |
2459 | ||
2460 | static void parse_from_existing(struct branch *b) | |
2461 | { | |
2462 | if (is_null_sha1(b->sha1)) { | |
2463 | hashclr(b->branch_tree.versions[0].sha1); | |
2464 | hashclr(b->branch_tree.versions[1].sha1); | |
2465 | } else { | |
2466 | unsigned long size; | |
2467 | char *buf; | |
2468 | ||
2469 | buf = read_object_with_reference(b->sha1, | |
2470 | commit_type, &size, b->sha1); | |
2471 | parse_from_commit(b, buf, size); | |
2472 | free(buf); | |
2473 | } | |
2474 | } | |
2475 | ||
2476 | static int parse_from(struct branch *b) | |
2477 | { | |
2478 | const char *from; | |
2479 | struct branch *s; | |
2480 | ||
2481 | if (prefixcmp(command_buf.buf, "from ")) | |
2482 | return 0; | |
2483 | ||
2484 | if (b->branch_tree.tree) { | |
2485 | release_tree_content_recursive(b->branch_tree.tree); | |
2486 | b->branch_tree.tree = NULL; | |
2487 | } | |
2488 | ||
2489 | from = strchr(command_buf.buf, ' ') + 1; | |
2490 | s = lookup_branch(from); | |
2491 | if (b == s) | |
2492 | die("Can't create a branch from itself: %s", b->name); | |
2493 | else if (s) { | |
2494 | unsigned char *t = s->branch_tree.versions[1].sha1; | |
2495 | hashcpy(b->sha1, s->sha1); | |
2496 | hashcpy(b->branch_tree.versions[0].sha1, t); | |
2497 | hashcpy(b->branch_tree.versions[1].sha1, t); | |
2498 | } else if (*from == ':') { | |
2499 | uintmax_t idnum = strtoumax(from + 1, NULL, 10); | |
2500 | struct object_entry *oe = find_mark(idnum); | |
2501 | if (oe->type != OBJ_COMMIT) | |
2502 | die("Mark :%" PRIuMAX " not a commit", idnum); | |
2503 | hashcpy(b->sha1, oe->idx.sha1); | |
2504 | if (oe->pack_id != MAX_PACK_ID) { | |
2505 | unsigned long size; | |
2506 | char *buf = gfi_unpack_entry(oe, &size); | |
2507 | parse_from_commit(b, buf, size); | |
2508 | free(buf); | |
2509 | } else | |
2510 | parse_from_existing(b); | |
2511 | } else if (!get_sha1(from, b->sha1)) | |
2512 | parse_from_existing(b); | |
2513 | else | |
2514 | die("Invalid ref name or SHA1 expression: %s", from); | |
2515 | ||
2516 | read_next_command(); | |
2517 | return 1; | |
2518 | } | |
2519 | ||
2520 | static struct hash_list *parse_merge(unsigned int *count) | |
2521 | { | |
2522 | struct hash_list *list = NULL, *n, *e = e; | |
2523 | const char *from; | |
2524 | struct branch *s; | |
2525 | ||
2526 | *count = 0; | |
2527 | while (!prefixcmp(command_buf.buf, "merge ")) { | |
2528 | from = strchr(command_buf.buf, ' ') + 1; | |
2529 | n = xmalloc(sizeof(*n)); | |
2530 | s = lookup_branch(from); | |
2531 | if (s) | |
2532 | hashcpy(n->sha1, s->sha1); | |
2533 | else if (*from == ':') { | |
2534 | uintmax_t idnum = strtoumax(from + 1, NULL, 10); | |
2535 | struct object_entry *oe = find_mark(idnum); | |
2536 | if (oe->type != OBJ_COMMIT) | |
2537 | die("Mark :%" PRIuMAX " not a commit", idnum); | |
2538 | hashcpy(n->sha1, oe->idx.sha1); | |
2539 | } else if (!get_sha1(from, n->sha1)) { | |
2540 | unsigned long size; | |
2541 | char *buf = read_object_with_reference(n->sha1, | |
2542 | commit_type, &size, n->sha1); | |
2543 | if (!buf || size < 46) | |
2544 | die("Not a valid commit: %s", from); | |
2545 | free(buf); | |
2546 | } else | |
2547 | die("Invalid ref name or SHA1 expression: %s", from); | |
2548 | ||
2549 | n->next = NULL; | |
2550 | if (list) | |
2551 | e->next = n; | |
2552 | else | |
2553 | list = n; | |
2554 | e = n; | |
2555 | (*count)++; | |
2556 | read_next_command(); | |
2557 | } | |
2558 | return list; | |
2559 | } | |
2560 | ||
2561 | static void parse_new_commit(void) | |
2562 | { | |
2563 | static struct strbuf msg = STRBUF_INIT; | |
2564 | struct branch *b; | |
2565 | char *sp; | |
2566 | char *author = NULL; | |
2567 | char *committer = NULL; | |
2568 | struct hash_list *merge_list = NULL; | |
2569 | unsigned int merge_count; | |
2570 | unsigned char prev_fanout, new_fanout; | |
2571 | ||
2572 | /* Obtain the branch name from the rest of our command */ | |
2573 | sp = strchr(command_buf.buf, ' ') + 1; | |
2574 | b = lookup_branch(sp); | |
2575 | if (!b) | |
2576 | b = new_branch(sp); | |
2577 | ||
2578 | read_next_command(); | |
2579 | parse_mark(); | |
2580 | if (!prefixcmp(command_buf.buf, "author ")) { | |
2581 | author = parse_ident(command_buf.buf + 7); | |
2582 | read_next_command(); | |
2583 | } | |
2584 | if (!prefixcmp(command_buf.buf, "committer ")) { | |
2585 | committer = parse_ident(command_buf.buf + 10); | |
2586 | read_next_command(); | |
2587 | } | |
2588 | if (!committer) | |
2589 | die("Expected committer but didn't get one"); | |
2590 | parse_data(&msg, 0, NULL); | |
2591 | read_next_command(); | |
2592 | parse_from(b); | |
2593 | merge_list = parse_merge(&merge_count); | |
2594 | ||
2595 | /* ensure the branch is active/loaded */ | |
2596 | if (!b->branch_tree.tree || !max_active_branches) { | |
2597 | unload_one_branch(); | |
2598 | load_branch(b); | |
2599 | } | |
2600 | ||
2601 | prev_fanout = convert_num_notes_to_fanout(b->num_notes); | |
2602 | ||
2603 | /* file_change* */ | |
2604 | while (command_buf.len > 0) { | |
2605 | if (!prefixcmp(command_buf.buf, "M ")) | |
2606 | file_change_m(b); | |
2607 | else if (!prefixcmp(command_buf.buf, "D ")) | |
2608 | file_change_d(b); | |
2609 | else if (!prefixcmp(command_buf.buf, "R ")) | |
2610 | file_change_cr(b, 1); | |
2611 | else if (!prefixcmp(command_buf.buf, "C ")) | |
2612 | file_change_cr(b, 0); | |
2613 | else if (!prefixcmp(command_buf.buf, "N ")) | |
2614 | note_change_n(b, prev_fanout); | |
2615 | else if (!strcmp("deleteall", command_buf.buf)) | |
2616 | file_change_deleteall(b); | |
2617 | else { | |
2618 | unread_command_buf = 1; | |
2619 | break; | |
2620 | } | |
2621 | if (read_next_command() == EOF) | |
2622 | break; | |
2623 | } | |
2624 | ||
2625 | new_fanout = convert_num_notes_to_fanout(b->num_notes); | |
2626 | if (new_fanout != prev_fanout) | |
2627 | b->num_notes = change_note_fanout(&b->branch_tree, new_fanout); | |
2628 | ||
2629 | /* build the tree and the commit */ | |
2630 | store_tree(&b->branch_tree); | |
2631 | hashcpy(b->branch_tree.versions[0].sha1, | |
2632 | b->branch_tree.versions[1].sha1); | |
2633 | ||
2634 | strbuf_reset(&new_data); | |
2635 | strbuf_addf(&new_data, "tree %s\n", | |
2636 | sha1_to_hex(b->branch_tree.versions[1].sha1)); | |
2637 | if (!is_null_sha1(b->sha1)) | |
2638 | strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(b->sha1)); | |
2639 | while (merge_list) { | |
2640 | struct hash_list *next = merge_list->next; | |
2641 | strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(merge_list->sha1)); | |
2642 | free(merge_list); | |
2643 | merge_list = next; | |
2644 | } | |
2645 | strbuf_addf(&new_data, | |
2646 | "author %s\n" | |
2647 | "committer %s\n" | |
2648 | "\n", | |
2649 | author ? author : committer, committer); | |
2650 | strbuf_addbuf(&new_data, &msg); | |
2651 | free(author); | |
2652 | free(committer); | |
2653 | ||
2654 | if (!store_object(OBJ_COMMIT, &new_data, NULL, b->sha1, next_mark)) | |
2655 | b->pack_id = pack_id; | |
2656 | b->last_commit = object_count_by_type[OBJ_COMMIT]; | |
2657 | } | |
2658 | ||
2659 | static void parse_new_tag(void) | |
2660 | { | |
2661 | static struct strbuf msg = STRBUF_INIT; | |
2662 | char *sp; | |
2663 | const char *from; | |
2664 | char *tagger; | |
2665 | struct branch *s; | |
2666 | struct tag *t; | |
2667 | uintmax_t from_mark = 0; | |
2668 | unsigned char sha1[20]; | |
2669 | enum object_type type; | |
2670 | ||
2671 | /* Obtain the new tag name from the rest of our command */ | |
2672 | sp = strchr(command_buf.buf, ' ') + 1; | |
2673 | t = pool_alloc(sizeof(struct tag)); | |
2674 | t->next_tag = NULL; | |
2675 | t->name = pool_strdup(sp); | |
2676 | if (last_tag) | |
2677 | last_tag->next_tag = t; | |
2678 | else | |
2679 | first_tag = t; | |
2680 | last_tag = t; | |
2681 | read_next_command(); | |
2682 | ||
2683 | /* from ... */ | |
2684 | if (prefixcmp(command_buf.buf, "from ")) | |
2685 | die("Expected from command, got %s", command_buf.buf); | |
2686 | from = strchr(command_buf.buf, ' ') + 1; | |
2687 | s = lookup_branch(from); | |
2688 | if (s) { | |
2689 | hashcpy(sha1, s->sha1); | |
2690 | type = OBJ_COMMIT; | |
2691 | } else if (*from == ':') { | |
2692 | struct object_entry *oe; | |
2693 | from_mark = strtoumax(from + 1, NULL, 10); | |
2694 | oe = find_mark(from_mark); | |
2695 | type = oe->type; | |
2696 | hashcpy(sha1, oe->idx.sha1); | |
2697 | } else if (!get_sha1(from, sha1)) { | |
2698 | unsigned long size; | |
2699 | char *buf; | |
2700 | ||
2701 | buf = read_sha1_file(sha1, &type, &size); | |
2702 | if (!buf || size < 46) | |
2703 | die("Not a valid commit: %s", from); | |
2704 | free(buf); | |
2705 | } else | |
2706 | die("Invalid ref name or SHA1 expression: %s", from); | |
2707 | read_next_command(); | |
2708 | ||
2709 | /* tagger ... */ | |
2710 | if (!prefixcmp(command_buf.buf, "tagger ")) { | |
2711 | tagger = parse_ident(command_buf.buf + 7); | |
2712 | read_next_command(); | |
2713 | } else | |
2714 | tagger = NULL; | |
2715 | ||
2716 | /* tag payload/message */ | |
2717 | parse_data(&msg, 0, NULL); | |
2718 | ||
2719 | /* build the tag object */ | |
2720 | strbuf_reset(&new_data); | |
2721 | ||
2722 | strbuf_addf(&new_data, | |
2723 | "object %s\n" | |
2724 | "type %s\n" | |
2725 | "tag %s\n", | |
2726 | sha1_to_hex(sha1), typename(type), t->name); | |
2727 | if (tagger) | |
2728 | strbuf_addf(&new_data, | |
2729 | "tagger %s\n", tagger); | |
2730 | strbuf_addch(&new_data, '\n'); | |
2731 | strbuf_addbuf(&new_data, &msg); | |
2732 | free(tagger); | |
2733 | ||
2734 | if (store_object(OBJ_TAG, &new_data, NULL, t->sha1, 0)) | |
2735 | t->pack_id = MAX_PACK_ID; | |
2736 | else | |
2737 | t->pack_id = pack_id; | |
2738 | } | |
2739 | ||
2740 | static void parse_reset_branch(void) | |
2741 | { | |
2742 | struct branch *b; | |
2743 | char *sp; | |
2744 | ||
2745 | /* Obtain the branch name from the rest of our command */ | |
2746 | sp = strchr(command_buf.buf, ' ') + 1; | |
2747 | b = lookup_branch(sp); | |
2748 | if (b) { | |
2749 | hashclr(b->sha1); | |
2750 | hashclr(b->branch_tree.versions[0].sha1); | |
2751 | hashclr(b->branch_tree.versions[1].sha1); | |
2752 | if (b->branch_tree.tree) { | |
2753 | release_tree_content_recursive(b->branch_tree.tree); | |
2754 | b->branch_tree.tree = NULL; | |
2755 | } | |
2756 | } | |
2757 | else | |
2758 | b = new_branch(sp); | |
2759 | read_next_command(); | |
2760 | parse_from(b); | |
2761 | if (command_buf.len > 0) | |
2762 | unread_command_buf = 1; | |
2763 | } | |
2764 | ||
2765 | static void cat_blob_write(const char *buf, unsigned long size) | |
2766 | { | |
2767 | if (write_in_full(cat_blob_fd, buf, size) != size) | |
2768 | die_errno("Write to frontend failed"); | |
2769 | } | |
2770 | ||
2771 | static void cat_blob(struct object_entry *oe, unsigned char sha1[20]) | |
2772 | { | |
2773 | struct strbuf line = STRBUF_INIT; | |
2774 | unsigned long size; | |
2775 | enum object_type type = 0; | |
2776 | char *buf; | |
2777 | ||
2778 | if (!oe || oe->pack_id == MAX_PACK_ID) { | |
2779 | buf = read_sha1_file(sha1, &type, &size); | |
2780 | } else { | |
2781 | type = oe->type; | |
2782 | buf = gfi_unpack_entry(oe, &size); | |
2783 | } | |
2784 | ||
2785 | /* | |
2786 | * Output based on batch_one_object() from cat-file.c. | |
2787 | */ | |
2788 | if (type <= 0) { | |
2789 | strbuf_reset(&line); | |
2790 | strbuf_addf(&line, "%s missing\n", sha1_to_hex(sha1)); | |
2791 | cat_blob_write(line.buf, line.len); | |
2792 | strbuf_release(&line); | |
2793 | free(buf); | |
2794 | return; | |
2795 | } | |
2796 | if (!buf) | |
2797 | die("Can't read object %s", sha1_to_hex(sha1)); | |
2798 | if (type != OBJ_BLOB) | |
2799 | die("Object %s is a %s but a blob was expected.", | |
2800 | sha1_to_hex(sha1), typename(type)); | |
2801 | strbuf_reset(&line); | |
2802 | strbuf_addf(&line, "%s %s %lu\n", sha1_to_hex(sha1), | |
2803 | typename(type), size); | |
2804 | cat_blob_write(line.buf, line.len); | |
2805 | strbuf_release(&line); | |
2806 | cat_blob_write(buf, size); | |
2807 | cat_blob_write("\n", 1); | |
2808 | free(buf); | |
2809 | } | |
2810 | ||
2811 | static void parse_cat_blob(void) | |
2812 | { | |
2813 | const char *p; | |
2814 | struct object_entry *oe = oe; | |
2815 | unsigned char sha1[20]; | |
2816 | ||
2817 | /* cat-blob SP <object> LF */ | |
2818 | p = command_buf.buf + strlen("cat-blob "); | |
2819 | if (*p == ':') { | |
2820 | char *x; | |
2821 | oe = find_mark(strtoumax(p + 1, &x, 10)); | |
2822 | if (x == p + 1) | |
2823 | die("Invalid mark: %s", command_buf.buf); | |
2824 | if (!oe) | |
2825 | die("Unknown mark: %s", command_buf.buf); | |
2826 | if (*x) | |
2827 | die("Garbage after mark: %s", command_buf.buf); | |
2828 | hashcpy(sha1, oe->idx.sha1); | |
2829 | } else { | |
2830 | if (get_sha1_hex(p, sha1)) | |
2831 | die("Invalid SHA1: %s", command_buf.buf); | |
2832 | if (p[40]) | |
2833 | die("Garbage after SHA1: %s", command_buf.buf); | |
2834 | oe = find_object(sha1); | |
2835 | } | |
2836 | ||
2837 | cat_blob(oe, sha1); | |
2838 | } | |
2839 | ||
2840 | static void checkpoint(void) | |
2841 | { | |
2842 | checkpoint_requested = 0; | |
2843 | if (object_count) { | |
2844 | cycle_packfile(); | |
2845 | dump_branches(); | |
2846 | dump_tags(); | |
2847 | dump_marks(); | |
2848 | } | |
2849 | } | |
2850 | ||
2851 | static void parse_checkpoint(void) | |
2852 | { | |
2853 | checkpoint_requested = 1; | |
2854 | skip_optional_lf(); | |
2855 | } | |
2856 | ||
2857 | static void parse_progress(void) | |
2858 | { | |
2859 | fwrite(command_buf.buf, 1, command_buf.len, stdout); | |
2860 | fputc('\n', stdout); | |
2861 | fflush(stdout); | |
2862 | skip_optional_lf(); | |
2863 | } | |
2864 | ||
2865 | static char* make_fast_import_path(const char *path) | |
2866 | { | |
2867 | struct strbuf abs_path = STRBUF_INIT; | |
2868 | ||
2869 | if (!relative_marks_paths || is_absolute_path(path)) | |
2870 | return xstrdup(path); | |
2871 | strbuf_addf(&abs_path, "%s/info/fast-import/%s", get_git_dir(), path); | |
2872 | return strbuf_detach(&abs_path, NULL); | |
2873 | } | |
2874 | ||
2875 | static void option_import_marks(const char *marks, | |
2876 | int from_stream, int ignore_missing) | |
2877 | { | |
2878 | if (import_marks_file) { | |
2879 | if (from_stream) | |
2880 | die("Only one import-marks command allowed per stream"); | |
2881 | ||
2882 | /* read previous mark file */ | |
2883 | if(!import_marks_file_from_stream) | |
2884 | read_marks(); | |
2885 | } | |
2886 | ||
2887 | import_marks_file = make_fast_import_path(marks); | |
2888 | safe_create_leading_directories_const(import_marks_file); | |
2889 | import_marks_file_from_stream = from_stream; | |
2890 | import_marks_file_ignore_missing = ignore_missing; | |
2891 | } | |
2892 | ||
2893 | static void option_date_format(const char *fmt) | |
2894 | { | |
2895 | if (!strcmp(fmt, "raw")) | |
2896 | whenspec = WHENSPEC_RAW; | |
2897 | else if (!strcmp(fmt, "rfc2822")) | |
2898 | whenspec = WHENSPEC_RFC2822; | |
2899 | else if (!strcmp(fmt, "now")) | |
2900 | whenspec = WHENSPEC_NOW; | |
2901 | else | |
2902 | die("unknown --date-format argument %s", fmt); | |
2903 | } | |
2904 | ||
2905 | static unsigned long ulong_arg(const char *option, const char *arg) | |
2906 | { | |
2907 | char *endptr; | |
2908 | unsigned long rv = strtoul(arg, &endptr, 0); | |
2909 | if (strchr(arg, '-') || endptr == arg || *endptr) | |
2910 | die("%s: argument must be a non-negative integer", option); | |
2911 | return rv; | |
2912 | } | |
2913 | ||
2914 | static void option_depth(const char *depth) | |
2915 | { | |
2916 | max_depth = ulong_arg("--depth", depth); | |
2917 | if (max_depth > MAX_DEPTH) | |
2918 | die("--depth cannot exceed %u", MAX_DEPTH); | |
2919 | } | |
2920 | ||
2921 | static void option_active_branches(const char *branches) | |
2922 | { | |
2923 | max_active_branches = ulong_arg("--active-branches", branches); | |
2924 | } | |
2925 | ||
2926 | static void option_export_marks(const char *marks) | |
2927 | { | |
2928 | export_marks_file = make_fast_import_path(marks); | |
2929 | safe_create_leading_directories_const(export_marks_file); | |
2930 | } | |
2931 | ||
2932 | static void option_cat_blob_fd(const char *fd) | |
2933 | { | |
2934 | unsigned long n = ulong_arg("--cat-blob-fd", fd); | |
2935 | if (n > (unsigned long) INT_MAX) | |
2936 | die("--cat-blob-fd cannot exceed %d", INT_MAX); | |
2937 | cat_blob_fd = (int) n; | |
2938 | } | |
2939 | ||
2940 | static void option_export_pack_edges(const char *edges) | |
2941 | { | |
2942 | if (pack_edges) | |
2943 | fclose(pack_edges); | |
2944 | pack_edges = fopen(edges, "a"); | |
2945 | if (!pack_edges) | |
2946 | die_errno("Cannot open '%s'", edges); | |
2947 | } | |
2948 | ||
2949 | static int parse_one_option(const char *option) | |
2950 | { | |
2951 | if (!prefixcmp(option, "max-pack-size=")) { | |
2952 | unsigned long v; | |
2953 | if (!git_parse_ulong(option + 14, &v)) | |
2954 | return 0; | |
2955 | if (v < 8192) { | |
2956 | warning("max-pack-size is now in bytes, assuming --max-pack-size=%lum", v); | |
2957 | v *= 1024 * 1024; | |
2958 | } else if (v < 1024 * 1024) { | |
2959 | warning("minimum max-pack-size is 1 MiB"); | |
2960 | v = 1024 * 1024; | |
2961 | } | |
2962 | max_packsize = v; | |
2963 | } else if (!prefixcmp(option, "big-file-threshold=")) { | |
2964 | unsigned long v; | |
2965 | if (!git_parse_ulong(option + 19, &v)) | |
2966 | return 0; | |
2967 | big_file_threshold = v; | |
2968 | } else if (!prefixcmp(option, "depth=")) { | |
2969 | option_depth(option + 6); | |
2970 | } else if (!prefixcmp(option, "active-branches=")) { | |
2971 | option_active_branches(option + 16); | |
2972 | } else if (!prefixcmp(option, "export-pack-edges=")) { | |
2973 | option_export_pack_edges(option + 18); | |
2974 | } else if (!prefixcmp(option, "quiet")) { | |
2975 | show_stats = 0; | |
2976 | } else if (!prefixcmp(option, "stats")) { | |
2977 | show_stats = 1; | |
2978 | } else { | |
2979 | return 0; | |
2980 | } | |
2981 | ||
2982 | return 1; | |
2983 | } | |
2984 | ||
2985 | static int parse_one_feature(const char *feature, int from_stream) | |
2986 | { | |
2987 | if (!prefixcmp(feature, "date-format=")) { | |
2988 | option_date_format(feature + 12); | |
2989 | } else if (!prefixcmp(feature, "import-marks=")) { | |
2990 | option_import_marks(feature + 13, from_stream, 0); | |
2991 | } else if (!prefixcmp(feature, "import-marks-if-exists=")) { | |
2992 | option_import_marks(feature + strlen("import-marks-if-exists="), | |
2993 | from_stream, 1); | |
2994 | } else if (!prefixcmp(feature, "export-marks=")) { | |
2995 | option_export_marks(feature + 13); | |
2996 | } else if (!strcmp(feature, "cat-blob")) { | |
2997 | ; /* Don't die - this feature is supported */ | |
2998 | } else if (!prefixcmp(feature, "relative-marks")) { | |
2999 | relative_marks_paths = 1; | |
3000 | } else if (!prefixcmp(feature, "no-relative-marks")) { | |
3001 | relative_marks_paths = 0; | |
3002 | } else if (!prefixcmp(feature, "force")) { | |
3003 | force_update = 1; | |
3004 | } else if (!strcmp(feature, "notes")) { | |
3005 | ; /* do nothing; we have the feature */ | |
3006 | } else { | |
3007 | return 0; | |
3008 | } | |
3009 | ||
3010 | return 1; | |
3011 | } | |
3012 | ||
3013 | static void parse_feature(void) | |
3014 | { | |
3015 | char *feature = command_buf.buf + 8; | |
3016 | ||
3017 | if (seen_data_command) | |
3018 | die("Got feature command '%s' after data command", feature); | |
3019 | ||
3020 | if (parse_one_feature(feature, 1)) | |
3021 | return; | |
3022 | ||
3023 | die("This version of fast-import does not support feature %s.", feature); | |
3024 | } | |
3025 | ||
3026 | static void parse_option(void) | |
3027 | { | |
3028 | char *option = command_buf.buf + 11; | |
3029 | ||
3030 | if (seen_data_command) | |
3031 | die("Got option command '%s' after data command", option); | |
3032 | ||
3033 | if (parse_one_option(option)) | |
3034 | return; | |
3035 | ||
3036 | die("This version of fast-import does not support option: %s", option); | |
3037 | } | |
3038 | ||
3039 | static int git_pack_config(const char *k, const char *v, void *cb) | |
3040 | { | |
3041 | if (!strcmp(k, "pack.depth")) { | |
3042 | max_depth = git_config_int(k, v); | |
3043 | if (max_depth > MAX_DEPTH) | |
3044 | max_depth = MAX_DEPTH; | |
3045 | return 0; | |
3046 | } | |
3047 | if (!strcmp(k, "pack.compression")) { | |
3048 | int level = git_config_int(k, v); | |
3049 | if (level == -1) | |
3050 | level = Z_DEFAULT_COMPRESSION; | |
3051 | else if (level < 0 || level > Z_BEST_COMPRESSION) | |
3052 | die("bad pack compression level %d", level); | |
3053 | pack_compression_level = level; | |
3054 | pack_compression_seen = 1; | |
3055 | return 0; | |
3056 | } | |
3057 | if (!strcmp(k, "pack.indexversion")) { | |
3058 | pack_idx_default_version = git_config_int(k, v); | |
3059 | if (pack_idx_default_version > 2) | |
3060 | die("bad pack.indexversion=%"PRIu32, | |
3061 | pack_idx_default_version); | |
3062 | return 0; | |
3063 | } | |
3064 | if (!strcmp(k, "pack.packsizelimit")) { | |
3065 | max_packsize = git_config_ulong(k, v); | |
3066 | return 0; | |
3067 | } | |
3068 | if (!strcmp(k, "core.bigfilethreshold")) { | |
3069 | long n = git_config_int(k, v); | |
3070 | big_file_threshold = 0 < n ? n : 0; | |
3071 | } | |
3072 | return git_default_config(k, v, cb); | |
3073 | } | |
3074 | ||
3075 | static const char fast_import_usage[] = | |
3076 | "git fast-import [--date-format=<f>] [--max-pack-size=<n>] [--big-file-threshold=<n>] [--depth=<n>] [--active-branches=<n>] [--export-marks=<marks.file>]"; | |
3077 | ||
3078 | static void parse_argv(void) | |
3079 | { | |
3080 | unsigned int i; | |
3081 | ||
3082 | for (i = 1; i < global_argc; i++) { | |
3083 | const char *a = global_argv[i]; | |
3084 | ||
3085 | if (*a != '-' || !strcmp(a, "--")) | |
3086 | break; | |
3087 | ||
3088 | if (parse_one_option(a + 2)) | |
3089 | continue; | |
3090 | ||
3091 | if (parse_one_feature(a + 2, 0)) | |
3092 | continue; | |
3093 | ||
3094 | if (!prefixcmp(a + 2, "cat-blob-fd=")) { | |
3095 | option_cat_blob_fd(a + 2 + strlen("cat-blob-fd=")); | |
3096 | continue; | |
3097 | } | |
3098 | ||
3099 | die("unknown option %s", a); | |
3100 | } | |
3101 | if (i != global_argc) | |
3102 | usage(fast_import_usage); | |
3103 | ||
3104 | seen_data_command = 1; | |
3105 | if (import_marks_file) | |
3106 | read_marks(); | |
3107 | } | |
3108 | ||
3109 | int main(int argc, const char **argv) | |
3110 | { | |
3111 | unsigned int i; | |
3112 | ||
3113 | git_extract_argv0_path(argv[0]); | |
3114 | ||
3115 | if (argc == 2 && !strcmp(argv[1], "-h")) | |
3116 | usage(fast_import_usage); | |
3117 | ||
3118 | setup_git_directory(); | |
3119 | git_config(git_pack_config, NULL); | |
3120 | if (!pack_compression_seen && core_compression_seen) | |
3121 | pack_compression_level = core_compression_level; | |
3122 | ||
3123 | alloc_objects(object_entry_alloc); | |
3124 | strbuf_init(&command_buf, 0); | |
3125 | atom_table = xcalloc(atom_table_sz, sizeof(struct atom_str*)); | |
3126 | branch_table = xcalloc(branch_table_sz, sizeof(struct branch*)); | |
3127 | avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*)); | |
3128 | marks = pool_calloc(1, sizeof(struct mark_set)); | |
3129 | ||
3130 | global_argc = argc; | |
3131 | global_argv = argv; | |
3132 | ||
3133 | rc_free = pool_alloc(cmd_save * sizeof(*rc_free)); | |
3134 | for (i = 0; i < (cmd_save - 1); i++) | |
3135 | rc_free[i].next = &rc_free[i + 1]; | |
3136 | rc_free[cmd_save - 1].next = NULL; | |
3137 | ||
3138 | prepare_packed_git(); | |
3139 | start_packfile(); | |
3140 | set_die_routine(die_nicely); | |
3141 | set_checkpoint_signal(); | |
3142 | while (read_next_command() != EOF) { | |
3143 | if (!strcmp("blob", command_buf.buf)) | |
3144 | parse_new_blob(); | |
3145 | else if (!prefixcmp(command_buf.buf, "commit ")) | |
3146 | parse_new_commit(); | |
3147 | else if (!prefixcmp(command_buf.buf, "tag ")) | |
3148 | parse_new_tag(); | |
3149 | else if (!prefixcmp(command_buf.buf, "reset ")) | |
3150 | parse_reset_branch(); | |
3151 | else if (!strcmp("checkpoint", command_buf.buf)) | |
3152 | parse_checkpoint(); | |
3153 | else if (!prefixcmp(command_buf.buf, "progress ")) | |
3154 | parse_progress(); | |
3155 | else if (!prefixcmp(command_buf.buf, "feature ")) | |
3156 | parse_feature(); | |
3157 | else if (!prefixcmp(command_buf.buf, "option git ")) | |
3158 | parse_option(); | |
3159 | else if (!prefixcmp(command_buf.buf, "option ")) | |
3160 | /* ignore non-git options*/; | |
3161 | else | |
3162 | die("Unsupported command: %s", command_buf.buf); | |
3163 | ||
3164 | if (checkpoint_requested) | |
3165 | checkpoint(); | |
3166 | } | |
3167 | ||
3168 | /* argv hasn't been parsed yet, do so */ | |
3169 | if (!seen_data_command) | |
3170 | parse_argv(); | |
3171 | ||
3172 | end_packfile(); | |
3173 | ||
3174 | dump_branches(); | |
3175 | dump_tags(); | |
3176 | unkeep_all_packs(); | |
3177 | dump_marks(); | |
3178 | ||
3179 | if (pack_edges) | |
3180 | fclose(pack_edges); | |
3181 | ||
3182 | if (show_stats) { | |
3183 | uintmax_t total_count = 0, duplicate_count = 0; | |
3184 | for (i = 0; i < ARRAY_SIZE(object_count_by_type); i++) | |
3185 | total_count += object_count_by_type[i]; | |
3186 | for (i = 0; i < ARRAY_SIZE(duplicate_count_by_type); i++) | |
3187 | duplicate_count += duplicate_count_by_type[i]; | |
3188 | ||
3189 | fprintf(stderr, "%s statistics:\n", argv[0]); | |
3190 | fprintf(stderr, "---------------------------------------------------------------------\n"); | |
3191 | fprintf(stderr, "Alloc'd objects: %10" PRIuMAX "\n", alloc_count); | |
3192 | fprintf(stderr, "Total objects: %10" PRIuMAX " (%10" PRIuMAX " duplicates )\n", total_count, duplicate_count); | |
3193 | fprintf(stderr, " blobs : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_BLOB], duplicate_count_by_type[OBJ_BLOB], delta_count_by_type[OBJ_BLOB]); | |
3194 | fprintf(stderr, " trees : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_TREE], duplicate_count_by_type[OBJ_TREE], delta_count_by_type[OBJ_TREE]); | |
3195 | fprintf(stderr, " commits: %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_COMMIT], duplicate_count_by_type[OBJ_COMMIT], delta_count_by_type[OBJ_COMMIT]); | |
3196 | fprintf(stderr, " tags : %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_TAG], duplicate_count_by_type[OBJ_TAG], delta_count_by_type[OBJ_TAG]); | |
3197 | fprintf(stderr, "Total branches: %10lu (%10lu loads )\n", branch_count, branch_load_count); | |
3198 | fprintf(stderr, " marks: %10" PRIuMAX " (%10" PRIuMAX " unique )\n", (((uintmax_t)1) << marks->shift) * 1024, marks_set_count); | |
3199 | fprintf(stderr, " atoms: %10u\n", atom_cnt); | |
3200 | fprintf(stderr, "Memory total: %10" PRIuMAX " KiB\n", (total_allocd + alloc_count*sizeof(struct object_entry))/1024); | |
3201 | fprintf(stderr, " pools: %10lu KiB\n", (unsigned long)(total_allocd/1024)); | |
3202 | fprintf(stderr, " objects: %10" PRIuMAX " KiB\n", (alloc_count*sizeof(struct object_entry))/1024); | |
3203 | fprintf(stderr, "---------------------------------------------------------------------\n"); | |
3204 | pack_report(); | |
3205 | fprintf(stderr, "---------------------------------------------------------------------\n"); | |
3206 | fprintf(stderr, "\n"); | |
3207 | } | |
3208 | ||
3209 | return failure ? 1 : 0; | |
3210 | } |