Bug Summary

File:fast-import.c
Location:line 3012, column 2
Description:Assigned value is garbage or undefined

Annotated Source Code

1/*
2(See Documentation/git-fast-import.txt for maintained documentation.)
3Format 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 commit-ish lf)?
26 ('merge' sp commit-ish lf)*
27 (file_change | ls)*
28 lf?;
29 commit_msg ::= data;
30
31 ls ::= 'ls' sp '"' quoted(path) '"' lf;
32
33 file_change ::= file_clr
34 | file_del
35 | file_rnm
36 | file_cpy
37 | file_obm
38 | file_inm;
39 file_clr ::= 'deleteall' lf;
40 file_del ::= 'D' sp path_str lf;
41 file_rnm ::= 'R' sp path_str sp path_str lf;
42 file_cpy ::= 'C' sp path_str sp path_str lf;
43 file_obm ::= 'M' sp mode sp (hexsha1 | idnum) sp path_str lf;
44 file_inm ::= 'M' sp mode sp 'inline' sp path_str lf
45 data;
46 note_obm ::= 'N' sp (hexsha1 | idnum) sp commit-ish lf;
47 note_inm ::= 'N' sp 'inline' sp commit-ish lf
48 data;
49
50 new_tag ::= 'tag' sp tag_str lf
51 'from' sp commit-ish lf
52 ('tagger' (sp name)? sp '<' email '>' sp when lf)?
53 tag_msg;
54 tag_msg ::= data;
55
56 reset_branch ::= 'reset' sp ref_str lf
57 ('from' sp commit-ish lf)?
58 lf?;
59
60 checkpoint ::= 'checkpoint' lf
61 lf?;
62
63 progress ::= 'progress' sp not_lf* lf
64 lf?;
65
66 # note: the first idnum in a stream should be 1 and subsequent
67 # idnums should not have gaps between values as this will cause
68 # the stream parser to reserve space for the gapped values. An
69 # idnum can be updated in the future to a new object by issuing
70 # a new mark directive with the old idnum.
71 #
72 mark ::= 'mark' sp idnum lf;
73 data ::= (delimited_data | exact_data)
74 lf?;
75
76 # note: delim may be any string but must not contain lf.
77 # data_line may contain any data but must not be exactly
78 # delim.
79 delimited_data ::= 'data' sp '<<' delim lf
80 (data_line lf)*
81 delim lf;
82
83 # note: declen indicates the length of binary_data in bytes.
84 # declen does not include the lf preceding the binary data.
85 #
86 exact_data ::= 'data' sp declen lf
87 binary_data;
88
89 # note: quoted strings are C-style quoting supporting \c for
90 # common escapes of 'c' (e..g \n, \t, \\, \") or \nnn where nnn
91 # is the signed byte value in octal. Note that the only
92 # characters which must actually be escaped to protect the
93 # stream formatting is: \, " and LF. Otherwise these values
94 # are UTF8.
95 #
96 commit-ish ::= (ref_str | hexsha1 | sha1exp_str | idnum);
97 ref_str ::= ref;
98 sha1exp_str ::= sha1exp;
99 tag_str ::= tag;
100 path_str ::= path | '"' quoted(path) '"' ;
101 mode ::= '100644' | '644'
102 | '100755' | '755'
103 | '120000'
104 ;
105
106 declen ::= # unsigned 32 bit value, ascii base10 notation;
107 bigint ::= # unsigned integer value, ascii base10 notation;
108 binary_data ::= # file content, not interpreted;
109
110 when ::= raw_when | rfc2822_when;
111 raw_when ::= ts sp tz;
112 rfc2822_when ::= # Valid RFC 2822 date and time;
113
114 sp ::= # ASCII space character;
115 lf ::= # ASCII newline (LF) character;
116
117 # note: a colon (':') must precede the numerical value assigned to
118 # an idnum. This is to distinguish it from a ref or tag name as
119 # GIT does not permit ':' in ref or tag strings.
120 #
121 idnum ::= ':' bigint;
122 path ::= # GIT style file path, e.g. "a/b/c";
123 ref ::= # GIT ref name, e.g. "refs/heads/MOZ_GECKO_EXPERIMENT";
124 tag ::= # GIT tag name, e.g. "FIREFOX_1_5";
125 sha1exp ::= # Any valid GIT SHA1 expression;
126 hexsha1 ::= # SHA1 in hexadecimal format;
127
128 # note: name and email are UTF8 strings, however name must not
129 # contain '<' or lf and email must not contain any of the
130 # following: '<', '>', lf.
131 #
132 name ::= # valid GIT author/committer name;
133 email ::= # valid GIT author/committer email;
134 ts ::= # time since the epoch in seconds, ascii base10 notation;
135 tz ::= # GIT style timezone;
136
137 # note: comments, get-mark, ls-tree, and cat-blob requests may
138 # appear anywhere in the input, except within a data command. Any
139 # form of the data command always escapes the related input from
140 # comment processing.
141 #
142 # In case it is not clear, the '#' that starts the comment
143 # must be the first character on that line (an lf
144 # preceded it).
145 #
146
147 get_mark ::= 'get-mark' sp idnum lf;
148 cat_blob ::= 'cat-blob' sp (hexsha1 | idnum) lf;
149 ls_tree ::= 'ls' sp (hexsha1 | idnum) sp path_str lf;
150
151 comment ::= '#' not_lf* lf;
152 not_lf ::= # Any byte that is not ASCII newline (LF);
153*/
154
155#include "builtin.h"
156#include "cache.h"
157#include "lockfile.h"
158#include "object.h"
159#include "blob.h"
160#include "tree.h"
161#include "commit.h"
162#include "delta.h"
163#include "pack.h"
164#include "refs.h"
165#include "csum-file.h"
166#include "quote.h"
167#include "dir.h"
168#include "run-command.h"
169
170#define PACK_ID_BITS16 16
171#define MAX_PACK_ID((1<<16)-1) ((1<<PACK_ID_BITS16)-1)
172#define DEPTH_BITS13 13
173#define MAX_DEPTH((1<<13)-1) ((1<<DEPTH_BITS13)-1)
174
175/*
176 * We abuse the setuid bit on directories to mean "do not delta".
177 */
178#define NO_DELTA0004000 S_ISUID0004000
179
180struct object_entry {
181 struct pack_idx_entry idx;
182 struct object_entry *next;
183 uint32_t type : TYPE_BITS3,
184 pack_id : PACK_ID_BITS16,
185 depth : DEPTH_BITS13;
186};
187
188struct object_entry_pool {
189 struct object_entry_pool *next_pool;
190 struct object_entry *next_free;
191 struct object_entry *end;
192 struct object_entry entries[FLEX_ARRAY]; /* more */
193};
194
195struct mark_set {
196 union {
197 struct object_entry *marked[1024];
198 struct mark_set *sets[1024];
199 } data;
200 unsigned int shift;
201};
202
203struct last_object {
204 struct strbuf data;
205 off_t offset;
206 unsigned int depth;
207 unsigned no_swap : 1;
208};
209
210struct mem_pool {
211 struct mem_pool *next_pool;
212 char *next_free;
213 char *end;
214 uintmax_t space[FLEX_ARRAY]; /* more */
215};
216
217struct atom_str {
218 struct atom_str *next_atom;
219 unsigned short str_len;
220 char str_dat[FLEX_ARRAY]; /* more */
221};
222
223struct tree_content;
224struct tree_entry {
225 struct tree_content *tree;
226 struct atom_str *name;
227 struct tree_entry_ms {
228 uint16_t mode;
229 unsigned char sha1[20];
230 } versions[2];
231};
232
233struct tree_content {
234 unsigned int entry_capacity; /* must match avail_tree_content */
235 unsigned int entry_count;
236 unsigned int delta_depth;
237 struct tree_entry *entries[FLEX_ARRAY]; /* more */
238};
239
240struct avail_tree_content {
241 unsigned int entry_capacity; /* must match tree_content */
242 struct avail_tree_content *next_avail;
243};
244
245struct branch {
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 delete : 1;
254 unsigned pack_id : PACK_ID_BITS16;
255 unsigned char sha1[20];
256};
257
258struct tag {
259 struct tag *next_tag;
260 const char *name;
261 unsigned int pack_id;
262 unsigned char sha1[20];
263};
264
265struct hash_list {
266 struct hash_list *next;
267 unsigned char sha1[20];
268};
269
270typedef enum {
271 WHENSPEC_RAW = 1,
272 WHENSPEC_RFC2822,
273 WHENSPEC_NOW
274} whenspec_type;
275
276struct recent_command {
277 struct recent_command *prev;
278 struct recent_command *next;
279 char *buf;
280};
281
282/* Configured limits on output */
283static unsigned long max_depth = 10;
284static off_t max_packsize;
285static int unpack_limit = 100;
286static int force_update;
287
288/* Stats and misc. counters */
289static uintmax_t alloc_count;
290static uintmax_t marks_set_count;
291static uintmax_t object_count_by_type[1 << TYPE_BITS3];
292static uintmax_t duplicate_count_by_type[1 << TYPE_BITS3];
293static uintmax_t delta_count_by_type[1 << TYPE_BITS3];
294static uintmax_t delta_count_attempts_by_type[1 << TYPE_BITS3];
295static unsigned long object_count;
296static unsigned long branch_count;
297static unsigned long branch_load_count;
298static int failure;
299static FILE *pack_edges;
300static unsigned int show_stats = 1;
301static int global_argc;
302static const char **global_argv;
303
304/* Memory pools */
305static size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool);
306static size_t total_allocd;
307static struct mem_pool *mem_pool;
308
309/* Atom management */
310static unsigned int atom_table_sz = 4451;
311static unsigned int atom_cnt;
312static struct atom_str **atom_table;
313
314/* The .pack file being generated */
315static struct pack_idx_option pack_idx_opts;
316static unsigned int pack_id;
317static struct sha1file *pack_file;
318static struct packed_git *pack_data;
319static struct packed_git **all_packs;
320static off_t pack_size;
321
322/* Table of objects we've written. */
323static unsigned int object_entry_alloc = 5000;
324static struct object_entry_pool *blocks;
325static struct object_entry *object_table[1 << 16];
326static struct mark_set *marks;
327static const char *export_marks_file;
328static const char *import_marks_file;
329static int import_marks_file_from_stream;
330static int import_marks_file_ignore_missing;
331static int import_marks_file_done;
332static int relative_marks_paths;
333
334/* Our last blob */
335static struct last_object last_blob = { STRBUF_INIT{ 0, 0, strbuf_slopbuf }, 0, 0, 0 };
336
337/* Tree management */
338static unsigned int tree_entry_alloc = 1000;
339static void *avail_tree_entry;
340static unsigned int avail_tree_table_sz = 100;
341static struct avail_tree_content **avail_tree_table;
342static struct strbuf old_tree = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
343static struct strbuf new_tree = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
344
345/* Branch data */
346static unsigned long max_active_branches = 5;
347static unsigned long cur_active_branches;
348static unsigned long branch_table_sz = 1039;
349static struct branch **branch_table;
350static struct branch *active_branches;
351
352/* Tag data */
353static struct tag *first_tag;
354static struct tag *last_tag;
355
356/* Input stream parsing */
357static whenspec_type whenspec = WHENSPEC_RAW;
358static struct strbuf command_buf = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
359static int unread_command_buf;
360static struct recent_command cmd_hist = {&cmd_hist, &cmd_hist, NULL((void*)0)};
361static struct recent_command *cmd_tail = &cmd_hist;
362static struct recent_command *rc_free;
363static unsigned int cmd_save = 100;
364static uintmax_t next_mark;
365static struct strbuf new_data = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
366static int seen_data_command;
367static int require_explicit_termination;
368
369/* Signal handling */
370static volatile sig_atomic_t checkpoint_requested;
371
372/* Where to write output of cat-blob commands */
373static int cat_blob_fd = STDOUT_FILENO1;
374
375static void parse_argv(void);
376static void parse_get_mark(const char *p);
377static void parse_cat_blob(const char *p);
378static void parse_ls(const char *p, struct branch *b);
379
380static void write_branch_report(FILE *rpt, struct branch *b)
381{
382 fprintf(rpt, "%s:\n", b->name);
383
384 fprintf(rpt, " status :");
385 if (b->active)
386 fputs(" active", rpt);
387 if (b->branch_tree.tree)
388 fputs(" loaded", rpt);
389 if (is_null_sha1(b->branch_tree.versions[1].sha1))
390 fputs(" dirty", rpt);
391 fputc('\n', rpt);
392
393 fprintf(rpt, " tip commit : %s\n", sha1_to_hex(b->sha1));
394 fprintf(rpt, " old tree : %s\n", sha1_to_hex(b->branch_tree.versions[0].sha1));
395 fprintf(rpt, " cur tree : %s\n", sha1_to_hex(b->branch_tree.versions[1].sha1));
396 fprintf(rpt, " commit clock: %" PRIuMAX"j" "u" "\n", b->last_commit);
397
398 fputs(" last pack : ", rpt);
399 if (b->pack_id < MAX_PACK_ID((1<<16)-1))
400 fprintf(rpt, "%u", b->pack_id);
401 fputc('\n', rpt);
402
403 fputc('\n', rpt);
404}
405
406static void dump_marks_helper(FILE *, uintmax_t, struct mark_set *);
407
408static void write_crash_report(const char *err)
409{
410 char *loc = git_pathdup("fast_import_crash_%"PRIuMAX"j" "u", (uintmax_t) getpid());
411 FILE *rpt = fopen(loc, "w");
412 struct branch *b;
413 unsigned long lu;
414 struct recent_command *rc;
415
416 if (!rpt) {
417 error_errno("can't write crash report %s", loc)(error_errno("can't write crash report %s", loc), const_error
());
418 free(loc);
419 return;
420 }
421
422 fprintf(stderr__stderrp, "fast-import: dumping crash report to %s\n", loc);
423
424 fprintf(rpt, "fast-import crash report:\n");
425 fprintf(rpt, " fast-import process: %"PRIuMAX"j" "u""\n", (uintmax_t) getpid());
426 fprintf(rpt, " parent process : %"PRIuMAX"j" "u""\n", (uintmax_t) getppid());
427 fprintf(rpt, " at %s\n", show_date(time(NULL((void*)0)), 0, DATE_MODE(ISO8601)date_mode_from_type(DATE_ISO8601)));
428 fputc('\n', rpt);
429
430 fputs("fatal: ", rpt);
431 fputs(err, rpt);
432 fputc('\n', rpt);
433
434 fputc('\n', rpt);
435 fputs("Most Recent Commands Before Crash\n", rpt);
436 fputs("---------------------------------\n", rpt);
437 for (rc = cmd_hist.next; rc != &cmd_hist; rc = rc->next) {
438 if (rc->next == &cmd_hist)
439 fputs("* ", rpt);
440 else
441 fputs(" ", rpt);
442 fputs(rc->buf, rpt);
443 fputc('\n', rpt);
444 }
445
446 fputc('\n', rpt);
447 fputs("Active Branch LRU\n", rpt);
448 fputs("-----------------\n", rpt);
449 fprintf(rpt, " active_branches = %lu cur, %lu max\n",
450 cur_active_branches,
451 max_active_branches);
452 fputc('\n', rpt);
453 fputs(" pos clock name\n", rpt);
454 fputs(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n", rpt);
455 for (b = active_branches, lu = 0; b; b = b->active_next_branch)
456 fprintf(rpt, " %2lu) %6" PRIuMAX"j" "u"" %s\n",
457 ++lu, b->last_commit, b->name);
458
459 fputc('\n', rpt);
460 fputs("Inactive Branches\n", rpt);
461 fputs("-----------------\n", rpt);
462 for (lu = 0; lu < branch_table_sz; lu++) {
463 for (b = branch_table[lu]; b; b = b->table_next_branch)
464 write_branch_report(rpt, b);
465 }
466
467 if (first_tag) {
468 struct tag *tg;
469 fputc('\n', rpt);
470 fputs("Annotated Tags\n", rpt);
471 fputs("--------------\n", rpt);
472 for (tg = first_tag; tg; tg = tg->next_tag) {
473 fputs(sha1_to_hex(tg->sha1), rpt);
474 fputc(' ', rpt);
475 fputs(tg->name, rpt);
476 fputc('\n', rpt);
477 }
478 }
479
480 fputc('\n', rpt);
481 fputs("Marks\n", rpt);
482 fputs("-----\n", rpt);
483 if (export_marks_file)
484 fprintf(rpt, " exported to %s\n", export_marks_file);
485 else
486 dump_marks_helper(rpt, 0, marks);
487
488 fputc('\n', rpt);
489 fputs("-------------------\n", rpt);
490 fputs("END OF CRASH REPORT\n", rpt);
491 fclose(rpt);
492 free(loc);
493}
494
495static void end_packfile(void);
496static void unkeep_all_packs(void);
497static void dump_marks(void);
498
499static NORETURN__attribute__((__noreturn__)) void die_nicely(const char *err, va_list params)
500{
501 static int zombie;
502 char message[2 * PATH_MAX1024];
503
504 vsnprintf(message, sizeof(message), err, params)__builtin___vsnprintf_chk (message, sizeof(message), 0, __builtin_object_size
(message, 2 > 1 ? 1 : 0), err, params);
505 fputs("fatal: ", stderr__stderrp);
506 fputs(message, stderr__stderrp);
507 fputc('\n', stderr__stderrp);
508
509 if (!zombie) {
510 zombie = 1;
511 write_crash_report(message);
512 end_packfile();
513 unkeep_all_packs();
514 dump_marks();
515 }
516 exit(128);
517}
518
519#ifndef SIGUSR130 /* Windows, for example */
520
521static void set_checkpoint_signal(void)
522{
523}
524
525#else
526
527static void checkpoint_signal(int signo)
528{
529 checkpoint_requested = 1;
530}
531
532static void set_checkpoint_signal(void)
533{
534 struct sigaction sa;
535
536 memset(&sa, 0, sizeof(sa))__builtin___memset_chk (&sa, 0, sizeof(sa), __builtin_object_size
(&sa, 0));
537 sa.sa_handler__sigaction_u.__sa_handler = checkpoint_signal;
538 sigemptyset(&sa.sa_mask)(*(&sa.sa_mask) = 0, 0);
539 sa.sa_flags = SA_RESTART0x0002;
540 sigaction(SIGUSR130, &sa, NULL((void*)0));
541}
542
543#endif
544
545static void alloc_objects(unsigned int cnt)
546{
547 struct object_entry_pool *b;
548
549 b = xmalloc(sizeof(struct object_entry_pool)
550 + cnt * sizeof(struct object_entry));
551 b->next_pool = blocks;
552 b->next_free = b->entries;
553 b->end = b->entries + cnt;
554 blocks = b;
555 alloc_count += cnt;
556}
557
558static struct object_entry *new_object(unsigned char *sha1)
559{
560 struct object_entry *e;
561
562 if (blocks->next_free == blocks->end)
563 alloc_objects(object_entry_alloc);
564
565 e = blocks->next_free++;
566 hashcpy(e->idx.sha1, sha1);
567 return e;
568}
569
570static struct object_entry *find_object(unsigned char *sha1)
571{
572 unsigned int h = sha1[0] << 8 | sha1[1];
573 struct object_entry *e;
574 for (e = object_table[h]; e; e = e->next)
575 if (!hashcmp(sha1, e->idx.sha1))
576 return e;
577 return NULL((void*)0);
578}
579
580static struct object_entry *insert_object(unsigned char *sha1)
581{
582 unsigned int h = sha1[0] << 8 | sha1[1];
583 struct object_entry *e = object_table[h];
584
585 while (e) {
586 if (!hashcmp(sha1, e->idx.sha1))
587 return e;
588 e = e->next;
589 }
590
591 e = new_object(sha1);
592 e->next = object_table[h];
593 e->idx.offset = 0;
594 object_table[h] = e;
595 return e;
596}
597
598static void invalidate_pack_id(unsigned int id)
599{
600 unsigned int h;
601 unsigned long lu;
602 struct tag *t;
603
604 for (h = 0; h < ARRAY_SIZE(object_table)(sizeof(object_table) / sizeof((object_table)[0]) + (sizeof(char
[1 - 2*!(!__builtin_types_compatible_p(__typeof__(object_table
), __typeof__(&(object_table)[0])))]) - 1)); h++) {
605 struct object_entry *e;
606
607 for (e = object_table[h]; e; e = e->next)
608 if (e->pack_id == id)
609 e->pack_id = MAX_PACK_ID((1<<16)-1);
610 }
611
612 for (lu = 0; lu < branch_table_sz; lu++) {
613 struct branch *b;
614
615 for (b = branch_table[lu]; b; b = b->table_next_branch)
616 if (b->pack_id == id)
617 b->pack_id = MAX_PACK_ID((1<<16)-1);
618 }
619
620 for (t = first_tag; t; t = t->next_tag)
621 if (t->pack_id == id)
622 t->pack_id = MAX_PACK_ID((1<<16)-1);
623}
624
625static unsigned int hc_str(const char *s, size_t len)
626{
627 unsigned int r = 0;
628 while (len-- > 0)
629 r = r * 31 + *s++;
630 return r;
631}
632
633static void *pool_alloc(size_t len)
634{
635 struct mem_pool *p;
636 void *r;
637
638 /* round up to a 'uintmax_t' alignment */
639 if (len & (sizeof(uintmax_t) - 1))
640 len += sizeof(uintmax_t) - (len & (sizeof(uintmax_t) - 1));
641
642 for (p = mem_pool; p; p = p->next_pool)
643 if ((p->end - p->next_free >= len))
644 break;
645
646 if (!p) {
647 if (len >= (mem_pool_alloc/2)) {
648 total_allocd += len;
649 return xmalloc(len);
650 }
651 total_allocd += sizeof(struct mem_pool) + mem_pool_alloc;
652 p = xmalloc(st_add(sizeof(struct mem_pool), mem_pool_alloc));
653 p->next_pool = mem_pool;
654 p->next_free = (char *) p->space;
655 p->end = p->next_free + mem_pool_alloc;
656 mem_pool = p;
657 }
658
659 r = p->next_free;
660 p->next_free += len;
661 return r;
662}
663
664static void *pool_calloc(size_t count, size_t size)
665{
666 size_t len = count * size;
667 void *r = pool_alloc(len);
668 memset(r, 0, len)__builtin___memset_chk (r, 0, len, __builtin_object_size (r, 0
));
669 return r;
670}
671
672static char *pool_strdup(const char *s)
673{
674 size_t len = strlen(s) + 1;
675 char *r = pool_alloc(len);
676 memcpy(r, s, len)__builtin___memcpy_chk (r, s, len, __builtin_object_size (r, 0
));
677 return r;
678}
679
680static void insert_mark(uintmax_t idnum, struct object_entry *oe)
681{
682 struct mark_set *s = marks;
683 while ((idnum >> s->shift) >= 1024) {
684 s = pool_calloc(1, sizeof(struct mark_set));
685 s->shift = marks->shift + 10;
686 s->data.sets[0] = marks;
687 marks = s;
688 }
689 while (s->shift) {
690 uintmax_t i = idnum >> s->shift;
691 idnum -= i << s->shift;
692 if (!s->data.sets[i]) {
693 s->data.sets[i] = pool_calloc(1, sizeof(struct mark_set));
694 s->data.sets[i]->shift = s->shift - 10;
695 }
696 s = s->data.sets[i];
697 }
698 if (!s->data.marked[idnum])
699 marks_set_count++;
700 s->data.marked[idnum] = oe;
701}
702
703static struct object_entry *find_mark(uintmax_t idnum)
704{
705 uintmax_t orig_idnum = idnum;
706 struct mark_set *s = marks;
707 struct object_entry *oe = NULL((void*)0);
708 if ((idnum >> s->shift) < 1024) {
709 while (s && s->shift) {
710 uintmax_t i = idnum >> s->shift;
711 idnum -= i << s->shift;
712 s = s->data.sets[i];
713 }
714 if (s)
715 oe = s->data.marked[idnum];
716 }
717 if (!oe)
718 die("mark :%" PRIuMAX"j" "u" " not declared", orig_idnum);
719 return oe;
720}
721
722static struct atom_str *to_atom(const char *s, unsigned short len)
723{
724 unsigned int hc = hc_str(s, len) % atom_table_sz;
725 struct atom_str *c;
726
727 for (c = atom_table[hc]; c; c = c->next_atom)
728 if (c->str_len == len && !strncmp(s, c->str_dat, len))
729 return c;
730
731 c = pool_alloc(sizeof(struct atom_str) + len + 1);
732 c->str_len = len;
733 memcpy(c->str_dat, s, len)__builtin___memcpy_chk (c->str_dat, s, len, __builtin_object_size
(c->str_dat, 0));
734 c->str_dat[len] = 0;
735 c->next_atom = atom_table[hc];
736 atom_table[hc] = c;
737 atom_cnt++;
738 return c;
739}
740
741static struct branch *lookup_branch(const char *name)
742{
743 unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz;
744 struct branch *b;
745
746 for (b = branch_table[hc]; b; b = b->table_next_branch)
747 if (!strcmp(name, b->name))
748 return b;
749 return NULL((void*)0);
750}
751
752static struct branch *new_branch(const char *name)
753{
754 unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz;
755 struct branch *b = lookup_branch(name);
756
757 if (b)
758 die("Invalid attempt to create duplicate branch: %s", name);
759 if (check_refname_format(name, REFNAME_ALLOW_ONELEVEL1))
760 die("Branch name doesn't conform to GIT standards: %s", name);
761
762 b = pool_calloc(1, sizeof(struct branch));
763 b->name = pool_strdup(name);
764 b->table_next_branch = branch_table[hc];
765 b->branch_tree.versions[0].mode = S_IFDIR0040000;
766 b->branch_tree.versions[1].mode = S_IFDIR0040000;
767 b->num_notes = 0;
768 b->active = 0;
769 b->pack_id = MAX_PACK_ID((1<<16)-1);
770 branch_table[hc] = b;
771 branch_count++;
772 return b;
773}
774
775static unsigned int hc_entries(unsigned int cnt)
776{
777 cnt = cnt & 7 ? (cnt / 8) + 1 : cnt / 8;
778 return cnt < avail_tree_table_sz ? cnt : avail_tree_table_sz - 1;
779}
780
781static struct tree_content *new_tree_content(unsigned int cnt)
782{
783 struct avail_tree_content *f, *l = NULL((void*)0);
784 struct tree_content *t;
785 unsigned int hc = hc_entries(cnt);
786
787 for (f = avail_tree_table[hc]; f; l = f, f = f->next_avail)
788 if (f->entry_capacity >= cnt)
789 break;
790
791 if (f) {
792 if (l)
793 l->next_avail = f->next_avail;
794 else
795 avail_tree_table[hc] = f->next_avail;
796 } else {
797 cnt = cnt & 7 ? ((cnt / 8) + 1) * 8 : cnt;
798 f = pool_alloc(sizeof(*t) + sizeof(t->entries[0]) * cnt);
799 f->entry_capacity = cnt;
800 }
801
802 t = (struct tree_content*)f;
803 t->entry_count = 0;
804 t->delta_depth = 0;
805 return t;
806}
807
808static void release_tree_entry(struct tree_entry *e);
809static void release_tree_content(struct tree_content *t)
810{
811 struct avail_tree_content *f = (struct avail_tree_content*)t;
812 unsigned int hc = hc_entries(f->entry_capacity);
813 f->next_avail = avail_tree_table[hc];
814 avail_tree_table[hc] = f;
815}
816
817static void release_tree_content_recursive(struct tree_content *t)
818{
819 unsigned int i;
820 for (i = 0; i < t->entry_count; i++)
821 release_tree_entry(t->entries[i]);
822 release_tree_content(t);
823}
824
825static struct tree_content *grow_tree_content(
826 struct tree_content *t,
827 int amt)
828{
829 struct tree_content *r = new_tree_content(t->entry_count + amt);
830 r->entry_count = t->entry_count;
831 r->delta_depth = t->delta_depth;
832 memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0]))__builtin___memcpy_chk (r->entries, t->entries, t->entry_count
*sizeof(t->entries[0]), __builtin_object_size (r->entries
, 0));
833 release_tree_content(t);
834 return r;
835}
836
837static struct tree_entry *new_tree_entry(void)
838{
839 struct tree_entry *e;
840
841 if (!avail_tree_entry) {
842 unsigned int n = tree_entry_alloc;
843 total_allocd += n * sizeof(struct tree_entry);
844 ALLOC_ARRAY(e, n)(e) = xmalloc(st_mult(sizeof(*(e)), (n)));
845 avail_tree_entry = e;
846 while (n-- > 1) {
847 *((void**)e) = e + 1;
848 e++;
849 }
850 *((void**)e) = NULL((void*)0);
851 }
852
853 e = avail_tree_entry;
854 avail_tree_entry = *((void**)e);
855 return e;
856}
857
858static void release_tree_entry(struct tree_entry *e)
859{
860 if (e->tree)
861 release_tree_content_recursive(e->tree);
862 *((void**)e) = avail_tree_entry;
863 avail_tree_entry = e;
864}
865
866static struct tree_content *dup_tree_content(struct tree_content *s)
867{
868 struct tree_content *d;
869 struct tree_entry *a, *b;
870 unsigned int i;
871
872 if (!s)
873 return NULL((void*)0);
874 d = new_tree_content(s->entry_count);
875 for (i = 0; i < s->entry_count; i++) {
876 a = s->entries[i];
877 b = new_tree_entry();
878 memcpy(b, a, sizeof(*a))__builtin___memcpy_chk (b, a, sizeof(*a), __builtin_object_size
(b, 0));
879 if (a->tree && is_null_sha1(b->versions[1].sha1))
880 b->tree = dup_tree_content(a->tree);
881 else
882 b->tree = NULL((void*)0);
883 d->entries[i] = b;
884 }
885 d->entry_count = s->entry_count;
886 d->delta_depth = s->delta_depth;
887
888 return d;
889}
890
891static void start_packfile(void)
892{
893 static char tmp_file[PATH_MAX1024];
894 struct packed_git *p;
895 struct pack_header hdr;
896 int pack_fd;
897
898 pack_fd = odb_mkstemp(tmp_file, sizeof(tmp_file),
899 "pack/tmp_pack_XXXXXX");
900 FLEX_ALLOC_STR(p, pack_name, tmp_file)do { size_t flex_array_len_ = (strlen(tmp_file)); ((p)) = xcalloc
(1, st_add(st_add((sizeof(*((p)))),(flex_array_len_)),(1))); __builtin___memcpy_chk
((void *)((p))->pack_name, ((tmp_file)), flex_array_len_,
__builtin_object_size ((void *)((p))->pack_name, 0)); } while
(0);
901 p->pack_fd = pack_fd;
902 p->do_not_close = 1;
903 pack_file = sha1fd(pack_fd, p->pack_name);
904
905 hdr.hdr_signature = htonl(PACK_SIGNATURE)git_bswap32(0x5041434b);
906 hdr.hdr_version = htonl(2)git_bswap32(2);
907 hdr.hdr_entries = 0;
908 sha1write(pack_file, &hdr, sizeof(hdr));
909
910 pack_data = p;
911 pack_size = sizeof(hdr);
912 object_count = 0;
913
914 REALLOC_ARRAY(all_packs, pack_id + 1)(all_packs) = xrealloc((all_packs), st_mult(sizeof(*(all_packs
)), (pack_id + 1)));
915 all_packs[pack_id] = p;
916}
917
918static const char *create_index(void)
919{
920 const char *tmpfile;
921 struct pack_idx_entry **idx, **c, **last;
922 struct object_entry *e;
923 struct object_entry_pool *o;
924
925 /* Build the table of object IDs. */
926 ALLOC_ARRAY(idx, object_count)(idx) = xmalloc(st_mult(sizeof(*(idx)), (object_count)));
927 c = idx;
928 for (o = blocks; o; o = o->next_pool)
929 for (e = o->next_free; e-- != o->entries;)
930 if (pack_id == e->pack_id)
931 *c++ = &e->idx;
932 last = idx + object_count;
933 if (c != last)
934 die("internal consistency error creating the index");
935
936 tmpfile = write_idx_file(NULL((void*)0), idx, object_count, &pack_idx_opts, pack_data->sha1);
937 free(idx);
938 return tmpfile;
939}
940
941static char *keep_pack(const char *curr_index_name)
942{
943 static char name[PATH_MAX1024];
944 static const char *keep_msg = "fast-import";
945 int keep_fd;
946
947 keep_fd = odb_pack_keep(name, sizeof(name), pack_data->sha1);
948 if (keep_fd < 0)
949 die_errno("cannot create keep file");
950 write_or_die(keep_fd, keep_msg, strlen(keep_msg));
951 if (close(keep_fd))
952 die_errno("failed to write keep file");
953
954 snprintf(name, sizeof(name), "%s/pack/pack-%s.pack",__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.pack", get_object_directory
(), sha1_to_hex(pack_data->sha1))
955 get_object_directory(), sha1_to_hex(pack_data->sha1))__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.pack", get_object_directory
(), sha1_to_hex(pack_data->sha1));
956 if (finalize_object_file(pack_data->pack_name, name))
957 die("cannot store pack file");
958
959 snprintf(name, sizeof(name), "%s/pack/pack-%s.idx",__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.idx", get_object_directory
(), sha1_to_hex(pack_data->sha1))
960 get_object_directory(), sha1_to_hex(pack_data->sha1))__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.idx", get_object_directory
(), sha1_to_hex(pack_data->sha1));
961 if (finalize_object_file(curr_index_name, name))
962 die("cannot store index file");
963 free((void *)curr_index_name);
964 return name;
965}
966
967static void unkeep_all_packs(void)
968{
969 static char name[PATH_MAX1024];
970 int k;
971
972 for (k = 0; k < pack_id; k++) {
973 struct packed_git *p = all_packs[k];
974 snprintf(name, sizeof(name), "%s/pack/pack-%s.keep",__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.keep", get_object_directory
(), sha1_to_hex(p->sha1))
975 get_object_directory(), sha1_to_hex(p->sha1))__builtin___snprintf_chk (name, sizeof(name), 0, __builtin_object_size
(name, 2 > 1 ? 1 : 0), "%s/pack/pack-%s.keep", get_object_directory
(), sha1_to_hex(p->sha1));
976 unlink_or_warn(name);
977 }
978}
979
980static int loosen_small_pack(const struct packed_git *p)
981{
982 struct child_process unpack = CHILD_PROCESS_INIT{ ((void*)0), { empty_argv, 0, 0 }, { empty_argv, 0, 0 } };
983
984 if (lseek(p->pack_fd, 0, SEEK_SET0) < 0)
985 die_errno("Failed seeking to start of '%s'", p->pack_name);
986
987 unpack.in = p->pack_fd;
988 unpack.git_cmd = 1;
989 unpack.stdout_to_stderr = 1;
990 argv_array_push(&unpack.args, "unpack-objects");
991 if (!show_stats)
992 argv_array_push(&unpack.args, "-q");
993
994 return run_command(&unpack);
995}
996
997static void end_packfile(void)
998{
999 static int running;
1000
1001 if (running || !pack_data)
1002 return;
1003
1004 running = 1;
1005 clear_delta_base_cache();
1006 if (object_count) {
1007 struct packed_git *new_p;
1008 unsigned char cur_pack_sha1[20];
1009 char *idx_name;
1010 int i;
1011 struct branch *b;
1012 struct tag *t;
1013
1014 close_pack_windows(pack_data);
1015 sha1close(pack_file, cur_pack_sha1, 0);
1016 fixup_pack_header_footer(pack_data->pack_fd, pack_data->sha1,
1017 pack_data->pack_name, object_count,
1018 cur_pack_sha1, pack_size);
1019
1020 if (object_count <= unpack_limit) {
1021 if (!loosen_small_pack(pack_data)) {
1022 invalidate_pack_id(pack_id);
1023 goto discard_pack;
1024 }
1025 }
1026
1027 close(pack_data->pack_fd);
1028 idx_name = keep_pack(create_index());
1029
1030 /* Register the packfile with core git's machinery. */
1031 new_p = add_packed_git(idx_name, strlen(idx_name), 1);
1032 if (!new_p)
1033 die("core git rejected index %s", idx_name);
1034 all_packs[pack_id] = new_p;
1035 install_packed_git(new_p);
1036
1037 /* Print the boundary */
1038 if (pack_edges) {
1039 fprintf(pack_edges, "%s:", new_p->pack_name);
1040 for (i = 0; i < branch_table_sz; i++) {
1041 for (b = branch_table[i]; b; b = b->table_next_branch) {
1042 if (b->pack_id == pack_id)
1043 fprintf(pack_edges, " %s", sha1_to_hex(b->sha1));
1044 }
1045 }
1046 for (t = first_tag; t; t = t->next_tag) {
1047 if (t->pack_id == pack_id)
1048 fprintf(pack_edges, " %s", sha1_to_hex(t->sha1));
1049 }
1050 fputc('\n', pack_edges);
1051 fflush(pack_edges);
1052 }
1053
1054 pack_id++;
1055 }
1056 else {
1057discard_pack:
1058 close(pack_data->pack_fd);
1059 unlink_or_warn(pack_data->pack_name);
1060 }
1061 free(pack_data);
1062 pack_data = NULL((void*)0);
1063 running = 0;
1064
1065 /* We can't carry a delta across packfiles. */
1066 strbuf_release(&last_blob.data);
1067 last_blob.offset = 0;
1068 last_blob.depth = 0;
1069}
1070
1071static void cycle_packfile(void)
1072{
1073 end_packfile();
1074 start_packfile();
1075}
1076
1077static int store_object(
1078 enum object_type type,
1079 struct strbuf *dat,
1080 struct last_object *last,
1081 unsigned char *sha1out,
1082 uintmax_t mark)
1083{
1084 void *out, *delta;
1085 struct object_entry *e;
1086 unsigned char hdr[96];
1087 unsigned char sha1[20];
1088 unsigned long hdrlen, deltalen;
1089 git_SHA_CTXblk_SHA_CTX c;
1090 git_zstream s;
1091
1092 hdrlen = xsnprintf((char *)hdr, sizeof(hdr), "%s %lu",
1093 typename(type), (unsigned long)dat->len) + 1;
1094 git_SHA1_Initblk_SHA1_Init(&c);
1095 git_SHA1_Updategit_SHA1_Update_Chunked(&c, hdr, hdrlen);
1096 git_SHA1_Updategit_SHA1_Update_Chunked(&c, dat->buf, dat->len);
1097 git_SHA1_Finalblk_SHA1_Final(sha1, &c);
1098 if (sha1out)
1099 hashcpy(sha1out, sha1);
1100
1101 e = insert_object(sha1);
1102 if (mark)
1103 insert_mark(mark, e);
1104 if (e->idx.offset) {
1105 duplicate_count_by_type[type]++;
1106 return 1;
1107 } else if (find_sha1_pack(sha1, packed_git)) {
1108 e->type = type;
1109 e->pack_id = MAX_PACK_ID((1<<16)-1);
1110 e->idx.offset = 1; /* just not zero! */
1111 duplicate_count_by_type[type]++;
1112 return 1;
1113 }
1114
1115 if (last && last->data.buf && last->depth < max_depth && dat->len > 20) {
1116 delta_count_attempts_by_type[type]++;
1117 delta = diff_delta(last->data.buf, last->data.len,
1118 dat->buf, dat->len,
1119 &deltalen, dat->len - 20);
1120 } else
1121 delta = NULL((void*)0);
1122
1123 git_deflate_init(&s, pack_compression_level);
1124 if (delta) {
1125 s.next_in = delta;
1126 s.avail_in = deltalen;
1127 } else {
1128 s.next_in = (void *)dat->buf;
1129 s.avail_in = dat->len;
1130 }
1131 s.avail_out = git_deflate_bound(&s, s.avail_in);
1132 s.next_out = out = xmalloc(s.avail_out);
1133 while (git_deflate(&s, Z_FINISH4) == Z_OK0)
1134 ; /* nothing */
1135 git_deflate_end(&s);
1136
1137 /* Determine if we should auto-checkpoint. */
1138 if ((max_packsize && (pack_size + 60 + s.total_out) > max_packsize)
1139 || (pack_size + 60 + s.total_out) < pack_size) {
1140
1141 /* This new object needs to *not* have the current pack_id. */
1142 e->pack_id = pack_id + 1;
1143 cycle_packfile();
1144
1145 /* We cannot carry a delta into the new pack. */
1146 if (delta) {
1147 free(delta);
1148 delta = NULL((void*)0);
1149
1150 git_deflate_init(&s, pack_compression_level);
1151 s.next_in = (void *)dat->buf;
1152 s.avail_in = dat->len;
1153 s.avail_out = git_deflate_bound(&s, s.avail_in);
1154 s.next_out = out = xrealloc(out, s.avail_out);
1155 while (git_deflate(&s, Z_FINISH4) == Z_OK0)
1156 ; /* nothing */
1157 git_deflate_end(&s);
1158 }
1159 }
1160
1161 e->type = type;
1162 e->pack_id = pack_id;
1163 e->idx.offset = pack_size;
1164 object_count++;
1165 object_count_by_type[type]++;
1166
1167 crc32_begin(pack_file);
1168
1169 if (delta) {
1170 off_t ofs = e->idx.offset - last->offset;
1171 unsigned pos = sizeof(hdr) - 1;
1172
1173 delta_count_by_type[type]++;
1174 e->depth = last->depth + 1;
1175
1176 hdrlen = encode_in_pack_object_header(OBJ_OFS_DELTA, deltalen, hdr);
1177 sha1write(pack_file, hdr, hdrlen);
1178 pack_size += hdrlen;
1179
1180 hdr[pos] = ofs & 127;
1181 while (ofs >>= 7)
1182 hdr[--pos] = 128 | (--ofs & 127);
1183 sha1write(pack_file, hdr + pos, sizeof(hdr) - pos);
1184 pack_size += sizeof(hdr) - pos;
1185 } else {
1186 e->depth = 0;
1187 hdrlen = encode_in_pack_object_header(type, dat->len, hdr);
1188 sha1write(pack_file, hdr, hdrlen);
1189 pack_size += hdrlen;
1190 }
1191
1192 sha1write(pack_file, out, s.total_out);
1193 pack_size += s.total_out;
1194
1195 e->idx.crc32 = crc32_end(pack_file);
1196
1197 free(out);
1198 free(delta);
1199 if (last) {
1200 if (last->no_swap) {
1201 last->data = *dat;
1202 } else {
1203 strbuf_swap(&last->data, dat);
1204 }
1205 last->offset = e->idx.offset;
1206 last->depth = e->depth;
1207 }
1208 return 0;
1209}
1210
1211static void truncate_pack(struct sha1file_checkpoint *checkpoint)
1212{
1213 if (sha1file_truncate(pack_file, checkpoint))
1214 die_errno("cannot truncate pack to skip duplicate");
1215 pack_size = checkpoint->offset;
1216}
1217
1218static void stream_blob(uintmax_t len, unsigned char *sha1out, uintmax_t mark)
1219{
1220 size_t in_sz = 64 * 1024, out_sz = 64 * 1024;
1221 unsigned char *in_buf = xmalloc(in_sz);
1222 unsigned char *out_buf = xmalloc(out_sz);
1223 struct object_entry *e;
1224 unsigned char sha1[20];
1225 unsigned long hdrlen;
1226 off_t offset;
1227 git_SHA_CTXblk_SHA_CTX c;
1228 git_zstream s;
1229 struct sha1file_checkpoint checkpoint;
1230 int status = Z_OK0;
1231
1232 /* Determine if we should auto-checkpoint. */
1233 if ((max_packsize && (pack_size + 60 + len) > max_packsize)
1234 || (pack_size + 60 + len) < pack_size)
1235 cycle_packfile();
1236
1237 sha1file_checkpoint(pack_file, &checkpoint);
1238 offset = checkpoint.offset;
1239
1240 hdrlen = snprintf((char *)out_buf, out_sz, "blob %" PRIuMAX, len)__builtin___snprintf_chk ((char *)out_buf, out_sz, 0, __builtin_object_size
((char *)out_buf, 2 > 1 ? 1 : 0), "blob %" "j" "u", len) + 1;
1241 if (out_sz <= hdrlen)
1242 die("impossibly large object header");
1243
1244 git_SHA1_Initblk_SHA1_Init(&c);
1245 git_SHA1_Updategit_SHA1_Update_Chunked(&c, out_buf, hdrlen);
1246
1247 crc32_begin(pack_file);
1248
1249 git_deflate_init(&s, pack_compression_level);
1250
1251 hdrlen = encode_in_pack_object_header(OBJ_BLOB, len, out_buf);
1252 if (out_sz <= hdrlen)
1253 die("impossibly large object header");
1254
1255 s.next_out = out_buf + hdrlen;
1256 s.avail_out = out_sz - hdrlen;
1257
1258 while (status != Z_STREAM_END1) {
1259 if (0 < len && !s.avail_in) {
1260 size_t cnt = in_sz < len ? in_sz : (size_t)len;
1261 size_t n = fread(in_buf, 1, cnt, stdin__stdinp);
1262 if (!n && feof(stdin__stdinp))
1263 die("EOF in data (%" PRIuMAX"j" "u" " bytes remaining)", len);
1264
1265 git_SHA1_Updategit_SHA1_Update_Chunked(&c, in_buf, n);
1266 s.next_in = in_buf;
1267 s.avail_in = n;
1268 len -= n;
1269 }
1270
1271 status = git_deflate(&s, len ? 0 : Z_FINISH4);
1272
1273 if (!s.avail_out || status == Z_STREAM_END1) {
1274 size_t n = s.next_out - out_buf;
1275 sha1write(pack_file, out_buf, n);
1276 pack_size += n;
1277 s.next_out = out_buf;
1278 s.avail_out = out_sz;
1279 }
1280
1281 switch (status) {
1282 case Z_OK0:
1283 case Z_BUF_ERROR(-5):
1284 case Z_STREAM_END1:
1285 continue;
1286 default:
1287 die("unexpected deflate failure: %d", status);
1288 }
1289 }
1290 git_deflate_end(&s);
1291 git_SHA1_Finalblk_SHA1_Final(sha1, &c);
1292
1293 if (sha1out)
1294 hashcpy(sha1out, sha1);
1295
1296 e = insert_object(sha1);
1297
1298 if (mark)
1299 insert_mark(mark, e);
1300
1301 if (e->idx.offset) {
1302 duplicate_count_by_type[OBJ_BLOB]++;
1303 truncate_pack(&checkpoint);
1304
1305 } else if (find_sha1_pack(sha1, packed_git)) {
1306 e->type = OBJ_BLOB;
1307 e->pack_id = MAX_PACK_ID((1<<16)-1);
1308 e->idx.offset = 1; /* just not zero! */
1309 duplicate_count_by_type[OBJ_BLOB]++;
1310 truncate_pack(&checkpoint);
1311
1312 } else {
1313 e->depth = 0;
1314 e->type = OBJ_BLOB;
1315 e->pack_id = pack_id;
1316 e->idx.offset = offset;
1317 e->idx.crc32 = crc32_end(pack_file);
1318 object_count++;
1319 object_count_by_type[OBJ_BLOB]++;
1320 }
1321
1322 free(in_buf);
1323 free(out_buf);
1324}
1325
1326/* All calls must be guarded by find_object() or find_mark() to
1327 * ensure the 'struct object_entry' passed was written by this
1328 * process instance. We unpack the entry by the offset, avoiding
1329 * the need for the corresponding .idx file. This unpacking rule
1330 * works because we only use OBJ_REF_DELTA within the packfiles
1331 * created by fast-import.
1332 *
1333 * oe must not be NULL. Such an oe usually comes from giving
1334 * an unknown SHA-1 to find_object() or an undefined mark to
1335 * find_mark(). Callers must test for this condition and use
1336 * the standard read_sha1_file() when it happens.
1337 *
1338 * oe->pack_id must not be MAX_PACK_ID. Such an oe is usually from
1339 * find_mark(), where the mark was reloaded from an existing marks
1340 * file and is referencing an object that this fast-import process
1341 * instance did not write out to a packfile. Callers must test for
1342 * this condition and use read_sha1_file() instead.
1343 */
1344static void *gfi_unpack_entry(
1345 struct object_entry *oe,
1346 unsigned long *sizep)
1347{
1348 enum object_type type;
1349 struct packed_git *p = all_packs[oe->pack_id];
1350 if (p == pack_data && p->pack_size < (pack_size + 20)) {
1351 /* The object is stored in the packfile we are writing to
1352 * and we have modified it since the last time we scanned
1353 * back to read a previously written object. If an old
1354 * window covered [p->pack_size, p->pack_size + 20) its
1355 * data is stale and is not valid. Closing all windows
1356 * and updating the packfile length ensures we can read
1357 * the newly written data.
1358 */
1359 close_pack_windows(p);
1360 sha1flush(pack_file);
1361
1362 /* We have to offer 20 bytes additional on the end of
1363 * the packfile as the core unpacker code assumes the
1364 * footer is present at the file end and must promise
1365 * at least 20 bytes within any window it maps. But
1366 * we don't actually create the footer here.
1367 */
1368 p->pack_size = pack_size + 20;
1369 }
1370 return unpack_entry(p, oe->idx.offset, &type, sizep);
1371}
1372
1373static const char *get_mode(const char *str, uint16_t *modep)
1374{
1375 unsigned char c;
1376 uint16_t mode = 0;
1377
1378 while ((c = *str++) != ' ') {
1379 if (c < '0' || c > '7')
1380 return NULL((void*)0);
1381 mode = (mode << 3) + (c - '0');
1382 }
1383 *modep = mode;
1384 return str;
1385}
1386
1387static void load_tree(struct tree_entry *root)
1388{
1389 unsigned char *sha1 = root->versions[1].sha1;
1390 struct object_entry *myoe;
1391 struct tree_content *t;
1392 unsigned long size;
1393 char *buf;
1394 const char *c;
1395
1396 root->tree = t = new_tree_content(8);
1397 if (is_null_sha1(sha1))
1398 return;
1399
1400 myoe = find_object(sha1);
1401 if (myoe && myoe->pack_id != MAX_PACK_ID((1<<16)-1)) {
1402 if (myoe->type != OBJ_TREE)
1403 die("Not a tree: %s", sha1_to_hex(sha1));
1404 t->delta_depth = myoe->depth;
1405 buf = gfi_unpack_entry(myoe, &size);
1406 if (!buf)
1407 die("Can't load tree %s", sha1_to_hex(sha1));
1408 } else {
1409 enum object_type type;
1410 buf = read_sha1_file(sha1, &type, &size);
1411 if (!buf || type != OBJ_TREE)
1412 die("Can't load tree %s", sha1_to_hex(sha1));
1413 }
1414
1415 c = buf;
1416 while (c != (buf + size)) {
1417 struct tree_entry *e = new_tree_entry();
1418
1419 if (t->entry_count == t->entry_capacity)
1420 root->tree = t = grow_tree_content(t, t->entry_count);
1421 t->entries[t->entry_count++] = e;
1422
1423 e->tree = NULL((void*)0);
1424 c = get_mode(c, &e->versions[1].mode);
1425 if (!c)
1426 die("Corrupt mode in %s", sha1_to_hex(sha1));
1427 e->versions[0].mode = e->versions[1].mode;
1428 e->name = to_atom(c, strlen(c));
1429 c += e->name->str_len + 1;
1430 hashcpy(e->versions[0].sha1, (unsigned char *)c);
1431 hashcpy(e->versions[1].sha1, (unsigned char *)c);
1432 c += 20;
1433 }
1434 free(buf);
1435}
1436
1437static int tecmp0 (const void *_a, const void *_b)
1438{
1439 struct tree_entry *a = *((struct tree_entry**)_a);
1440 struct tree_entry *b = *((struct tree_entry**)_b);
1441 return base_name_compare(
1442 a->name->str_dat, a->name->str_len, a->versions[0].mode,
1443 b->name->str_dat, b->name->str_len, b->versions[0].mode);
1444}
1445
1446static int tecmp1 (const void *_a, const void *_b)
1447{
1448 struct tree_entry *a = *((struct tree_entry**)_a);
1449 struct tree_entry *b = *((struct tree_entry**)_b);
1450 return base_name_compare(
1451 a->name->str_dat, a->name->str_len, a->versions[1].mode,
1452 b->name->str_dat, b->name->str_len, b->versions[1].mode);
1453}
1454
1455static void mktree(struct tree_content *t, int v, struct strbuf *b)
1456{
1457 size_t maxlen = 0;
1458 unsigned int i;
1459
1460 if (!v)
1461 QSORT(t->entries, t->entry_count, tecmp0)sane_qsort((t->entries), (t->entry_count), sizeof(*(t->
entries)), tecmp0);
1462 else
1463 QSORT(t->entries, t->entry_count, tecmp1)sane_qsort((t->entries), (t->entry_count), sizeof(*(t->
entries)), tecmp1);
1464
1465 for (i = 0; i < t->entry_count; i++) {
1466 if (t->entries[i]->versions[v].mode)
1467 maxlen += t->entries[i]->name->str_len + 34;
1468 }
1469
1470 strbuf_reset(b)strbuf_setlen(b, 0);
1471 strbuf_grow(b, maxlen);
1472 for (i = 0; i < t->entry_count; i++) {
1473 struct tree_entry *e = t->entries[i];
1474 if (!e->versions[v].mode)
1475 continue;
1476 strbuf_addf(b, "%o %s%c",
1477 (unsigned int)(e->versions[v].mode & ~NO_DELTA0004000),
1478 e->name->str_dat, '\0');
1479 strbuf_add(b, e->versions[v].sha1, 20);
1480 }
1481}
1482
1483static void store_tree(struct tree_entry *root)
1484{
1485 struct tree_content *t;
1486 unsigned int i, j, del;
1487 struct last_object lo = { STRBUF_INIT{ 0, 0, strbuf_slopbuf }, 0, 0, /* no_swap */ 1 };
1488 struct object_entry *le = NULL((void*)0);
1489
1490 if (!is_null_sha1(root->versions[1].sha1))
1491 return;
1492
1493 if (!root->tree)
1494 load_tree(root);
1495 t = root->tree;
1496
1497 for (i = 0; i < t->entry_count; i++) {
1498 if (t->entries[i]->tree)
1499 store_tree(t->entries[i]);
1500 }
1501
1502 if (!(root->versions[0].mode & NO_DELTA0004000))
1503 le = find_object(root->versions[0].sha1);
1504 if (S_ISDIR(root->versions[0].mode)(((root->versions[0].mode) & 0170000) == 0040000) && le && le->pack_id == pack_id) {
1505 mktree(t, 0, &old_tree);
1506 lo.data = old_tree;
1507 lo.offset = le->idx.offset;
1508 lo.depth = t->delta_depth;
1509 }
1510
1511 mktree(t, 1, &new_tree);
1512 store_object(OBJ_TREE, &new_tree, &lo, root->versions[1].sha1, 0);
1513
1514 t->delta_depth = lo.depth;
1515 for (i = 0, j = 0, del = 0; i < t->entry_count; i++) {
1516 struct tree_entry *e = t->entries[i];
1517 if (e->versions[1].mode) {
1518 e->versions[0].mode = e->versions[1].mode;
1519 hashcpy(e->versions[0].sha1, e->versions[1].sha1);
1520 t->entries[j++] = e;
1521 } else {
1522 release_tree_entry(e);
1523 del++;
1524 }
1525 }
1526 t->entry_count -= del;
1527}
1528
1529static void tree_content_replace(
1530 struct tree_entry *root,
1531 const unsigned char *sha1,
1532 const uint16_t mode,
1533 struct tree_content *newtree)
1534{
1535 if (!S_ISDIR(mode)(((mode) & 0170000) == 0040000))
1536 die("Root cannot be a non-directory");
1537 hashclr(root->versions[0].sha1);
1538 hashcpy(root->versions[1].sha1, sha1);
1539 if (root->tree)
1540 release_tree_content_recursive(root->tree);
1541 root->tree = newtree;
1542}
1543
1544static int tree_content_set(
1545 struct tree_entry *root,
1546 const char *p,
1547 const unsigned char *sha1,
1548 const uint16_t mode,
1549 struct tree_content *subtree)
1550{
1551 struct tree_content *t;
1552 const char *slash1;
1553 unsigned int i, n;
1554 struct tree_entry *e;
1555
1556 slash1 = strchrnulgitstrchrnul(p, '/');
1557 n = slash1 - p;
1558 if (!n)
1559 die("Empty path component found in input");
1560 if (!*slash1 && !S_ISDIR(mode)(((mode) & 0170000) == 0040000) && subtree)
1561 die("Non-directories cannot have subtrees");
1562
1563 if (!root->tree)
1564 load_tree(root);
1565 t = root->tree;
1566 for (i = 0; i < t->entry_count; i++) {
1567 e = t->entries[i];
1568 if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
1569 if (!*slash1) {
1570 if (!S_ISDIR(mode)(((mode) & 0170000) == 0040000)
1571 && e->versions[1].mode == mode
1572 && !hashcmp(e->versions[1].sha1, sha1))
1573 return 0;
1574 e->versions[1].mode = mode;
1575 hashcpy(e->versions[1].sha1, sha1);
1576 if (e->tree)
1577 release_tree_content_recursive(e->tree);
1578 e->tree = subtree;
1579
1580 /*
1581 * We need to leave e->versions[0].sha1 alone
1582 * to avoid modifying the preimage tree used
1583 * when writing out the parent directory.
1584 * But after replacing the subdir with a
1585 * completely different one, it's not a good
1586 * delta base any more, and besides, we've
1587 * thrown away the tree entries needed to
1588 * make a delta against it.
1589 *
1590 * So let's just explicitly disable deltas
1591 * for the subtree.
1592 */
1593 if (S_ISDIR(e->versions[0].mode)(((e->versions[0].mode) & 0170000) == 0040000))
1594 e->versions[0].mode |= NO_DELTA0004000;
1595
1596 hashclr(root->versions[1].sha1);
1597 return 1;
1598 }
1599 if (!S_ISDIR(e->versions[1].mode)(((e->versions[1].mode) & 0170000) == 0040000)) {
1600 e->tree = new_tree_content(8);
1601 e->versions[1].mode = S_IFDIR0040000;
1602 }
1603 if (!e->tree)
1604 load_tree(e);
1605 if (tree_content_set(e, slash1 + 1, sha1, mode, subtree)) {
1606 hashclr(root->versions[1].sha1);
1607 return 1;
1608 }
1609 return 0;
1610 }
1611 }
1612
1613 if (t->entry_count == t->entry_capacity)
1614 root->tree = t = grow_tree_content(t, t->entry_count);
1615 e = new_tree_entry();
1616 e->name = to_atom(p, n);
1617 e->versions[0].mode = 0;
1618 hashclr(e->versions[0].sha1);
1619 t->entries[t->entry_count++] = e;
1620 if (*slash1) {
1621 e->tree = new_tree_content(8);
1622 e->versions[1].mode = S_IFDIR0040000;
1623 tree_content_set(e, slash1 + 1, sha1, mode, subtree);
1624 } else {
1625 e->tree = subtree;
1626 e->versions[1].mode = mode;
1627 hashcpy(e->versions[1].sha1, sha1);
1628 }
1629 hashclr(root->versions[1].sha1);
1630 return 1;
1631}
1632
1633static int tree_content_remove(
1634 struct tree_entry *root,
1635 const char *p,
1636 struct tree_entry *backup_leaf,
1637 int allow_root)
1638{
1639 struct tree_content *t;
1640 const char *slash1;
1641 unsigned int i, n;
1642 struct tree_entry *e;
1643
1644 slash1 = strchrnulgitstrchrnul(p, '/');
1645 n = slash1 - p;
1646
1647 if (!root->tree)
1648 load_tree(root);
1649
1650 if (!*p && allow_root) {
1651 e = root;
1652 goto del_entry;
1653 }
1654
1655 t = root->tree;
1656 for (i = 0; i < t->entry_count; i++) {
1657 e = t->entries[i];
1658 if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
1659 if (*slash1 && !S_ISDIR(e->versions[1].mode)(((e->versions[1].mode) & 0170000) == 0040000))
1660 /*
1661 * If p names a file in some subdirectory, and a
1662 * file or symlink matching the name of the
1663 * parent directory of p exists, then p cannot
1664 * exist and need not be deleted.
1665 */
1666 return 1;
1667 if (!*slash1 || !S_ISDIR(e->versions[1].mode)(((e->versions[1].mode) & 0170000) == 0040000))
1668 goto del_entry;
1669 if (!e->tree)
1670 load_tree(e);
1671 if (tree_content_remove(e, slash1 + 1, backup_leaf, 0)) {
1672 for (n = 0; n < e->tree->entry_count; n++) {
1673 if (e->tree->entries[n]->versions[1].mode) {
1674 hashclr(root->versions[1].sha1);
1675 return 1;
1676 }
1677 }
1678 backup_leaf = NULL((void*)0);
1679 goto del_entry;
1680 }
1681 return 0;
1682 }
1683 }
1684 return 0;
1685
1686del_entry:
1687 if (backup_leaf)
1688 memcpy(backup_leaf, e, sizeof(*backup_leaf))__builtin___memcpy_chk (backup_leaf, e, sizeof(*backup_leaf),
__builtin_object_size (backup_leaf, 0));
1689 else if (e->tree)
1690 release_tree_content_recursive(e->tree);
1691 e->tree = NULL((void*)0);
1692 e->versions[1].mode = 0;
1693 hashclr(e->versions[1].sha1);
1694 hashclr(root->versions[1].sha1);
1695 return 1;
1696}
1697
1698static int tree_content_get(
1699 struct tree_entry *root,
1700 const char *p,
1701 struct tree_entry *leaf,
1702 int allow_root)
1703{
1704 struct tree_content *t;
1705 const char *slash1;
1706 unsigned int i, n;
1707 struct tree_entry *e;
1708
1709 slash1 = strchrnulgitstrchrnul(p, '/');
1710 n = slash1 - p;
1711 if (!n && !allow_root)
1712 die("Empty path component found in input");
1713
1714 if (!root->tree)
1715 load_tree(root);
1716
1717 if (!n) {
1718 e = root;
1719 goto found_entry;
1720 }
1721
1722 t = root->tree;
1723 for (i = 0; i < t->entry_count; i++) {
1724 e = t->entries[i];
1725 if (e->name->str_len == n && !fspathncmp(p, e->name->str_dat, n)) {
1726 if (!*slash1)
1727 goto found_entry;
1728 if (!S_ISDIR(e->versions[1].mode)(((e->versions[1].mode) & 0170000) == 0040000))
1729 return 0;
1730 if (!e->tree)
1731 load_tree(e);
1732 return tree_content_get(e, slash1 + 1, leaf, 0);
1733 }
1734 }
1735 return 0;
1736
1737found_entry:
1738 memcpy(leaf, e, sizeof(*leaf))__builtin___memcpy_chk (leaf, e, sizeof(*leaf), __builtin_object_size
(leaf, 0));
1739 if (e->tree && is_null_sha1(e->versions[1].sha1))
1740 leaf->tree = dup_tree_content(e->tree);
1741 else
1742 leaf->tree = NULL((void*)0);
1743 return 1;
1744}
1745
1746static int update_branch(struct branch *b)
1747{
1748 static const char *msg = "fast-import";
1749 struct ref_transaction *transaction;
1750 unsigned char old_sha1[20];
1751 struct strbuf err = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
1752
1753 if (is_null_sha1(b->sha1)) {
1754 if (b->delete)
1755 delete_ref(b->name, NULL((void*)0), 0);
1756 return 0;
1757 }
1758 if (read_ref(b->name, old_sha1))
1759 hashclr(old_sha1);
1760 if (!force_update && !is_null_sha1(old_sha1)) {
1761 struct commit *old_cmit, *new_cmit;
1762
1763 old_cmit = lookup_commit_reference_gently(old_sha1, 0);
1764 new_cmit = lookup_commit_reference_gently(b->sha1, 0);
1765 if (!old_cmit || !new_cmit)
1766 return error("Branch %s is missing commits.", b->name)(error("Branch %s is missing commits.", b->name), const_error
());
1767
1768 if (!in_merge_bases(old_cmit, new_cmit)) {
1769 warning("Not updating %s"
1770 " (new tip %s does not contain %s)",
1771 b->name, sha1_to_hex(b->sha1), sha1_to_hex(old_sha1));
1772 return -1;
1773 }
1774 }
1775 transaction = ref_transaction_begin(&err);
1776 if (!transaction ||
1777 ref_transaction_update(transaction, b->name, b->sha1, old_sha1,
1778 0, msg, &err) ||
1779 ref_transaction_commit(transaction, &err)) {
1780 ref_transaction_free(transaction);
1781 error("%s", err.buf)(error("%s", err.buf), const_error());
1782 strbuf_release(&err);
1783 return -1;
1784 }
1785 ref_transaction_free(transaction);
1786 strbuf_release(&err);
1787 return 0;
1788}
1789
1790static void dump_branches(void)
1791{
1792 unsigned int i;
1793 struct branch *b;
1794
1795 for (i = 0; i < branch_table_sz; i++) {
1796 for (b = branch_table[i]; b; b = b->table_next_branch)
1797 failure |= update_branch(b);
1798 }
1799}
1800
1801static void dump_tags(void)
1802{
1803 static const char *msg = "fast-import";
1804 struct tag *t;
1805 struct strbuf ref_name = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
1806 struct strbuf err = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
1807 struct ref_transaction *transaction;
1808
1809 transaction = ref_transaction_begin(&err);
1810 if (!transaction) {
1811 failure |= error("%s", err.buf)(error("%s", err.buf), const_error());
1812 goto cleanup;
1813 }
1814 for (t = first_tag; t; t = t->next_tag) {
1815 strbuf_reset(&ref_name)strbuf_setlen(&ref_name, 0);
1816 strbuf_addf(&ref_name, "refs/tags/%s", t->name);
1817
1818 if (ref_transaction_update(transaction, ref_name.buf,
1819 t->sha1, NULL((void*)0), 0, msg, &err)) {
1820 failure |= error("%s", err.buf)(error("%s", err.buf), const_error());
1821 goto cleanup;
1822 }
1823 }
1824 if (ref_transaction_commit(transaction, &err))
1825 failure |= error("%s", err.buf)(error("%s", err.buf), const_error());
1826
1827 cleanup:
1828 ref_transaction_free(transaction);
1829 strbuf_release(&ref_name);
1830 strbuf_release(&err);
1831}
1832
1833static void dump_marks_helper(FILE *f,
1834 uintmax_t base,
1835 struct mark_set *m)
1836{
1837 uintmax_t k;
1838 if (m->shift) {
1839 for (k = 0; k < 1024; k++) {
1840 if (m->data.sets[k])
1841 dump_marks_helper(f, base + (k << m->shift),
1842 m->data.sets[k]);
1843 }
1844 } else {
1845 for (k = 0; k < 1024; k++) {
1846 if (m->data.marked[k])
1847 fprintf(f, ":%" PRIuMAX"j" "u" " %s\n", base + k,
1848 sha1_to_hex(m->data.marked[k]->idx.sha1));
1849 }
1850 }
1851}
1852
1853static void dump_marks(void)
1854{
1855 static struct lock_file mark_lock;
1856 FILE *f;
1857
1858 if (!export_marks_file || (import_marks_file && !import_marks_file_done))
1859 return;
1860
1861 if (hold_lock_file_for_update(&mark_lock, export_marks_file, 0) < 0) {
1862 failure |= error_errno("Unable to write marks file %s",(error_errno("Unable to write marks file %s", export_marks_file
), const_error())
1863 export_marks_file)(error_errno("Unable to write marks file %s", export_marks_file
), const_error());
1864 return;
1865 }
1866
1867 f = fdopen_lock_file(&mark_lock, "w");
1868 if (!f) {
1869 int saved_errno = errno(*__error());
1870 rollback_lock_file(&mark_lock);
1871 failure |= error("Unable to write marks file %s: %s",(error("Unable to write marks file %s: %s", export_marks_file
, strerror(saved_errno)), const_error())
1872 export_marks_file, strerror(saved_errno))(error("Unable to write marks file %s: %s", export_marks_file
, strerror(saved_errno)), const_error());
1873 return;
1874 }
1875
1876 dump_marks_helper(f, 0, marks);
1877 if (commit_lock_file(&mark_lock)) {
1878 failure |= error_errno("Unable to write file %s",(error_errno("Unable to write file %s", export_marks_file), const_error
())
1879 export_marks_file)(error_errno("Unable to write file %s", export_marks_file), const_error
());
1880 return;
1881 }
1882}
1883
1884static void read_marks(void)
1885{
1886 char line[512];
1887 FILE *f = fopen(import_marks_file, "r");
1888 if (f)
1889 ;
1890 else if (import_marks_file_ignore_missing && errno(*__error()) == ENOENT2)
1891 goto done; /* Marks file does not exist */
1892 else
1893 die_errno("cannot read '%s'", import_marks_file);
1894 while (fgets(line, sizeof(line), f)) {
1895 uintmax_t mark;
1896 char *end;
1897 unsigned char sha1[20];
1898 struct object_entry *e;
1899
1900 end = strchr(line, '\n');
1901 if (line[0] != ':' || !end)
1902 die("corrupt mark line: %s", line);
1903 *end = 0;
1904 mark = strtoumax(line + 1, &end, 10);
1905 if (!mark || end == line + 1
1906 || *end != ' ' || get_sha1_hex(end + 1, sha1))
1907 die("corrupt mark line: %s", line);
1908 e = find_object(sha1);
1909 if (!e) {
1910 enum object_type type = sha1_object_info(sha1, NULL((void*)0));
1911 if (type < 0)
1912 die("object not found: %s", sha1_to_hex(sha1));
1913 e = insert_object(sha1);
1914 e->type = type;
1915 e->pack_id = MAX_PACK_ID((1<<16)-1);
1916 e->idx.offset = 1; /* just not zero! */
1917 }
1918 insert_mark(mark, e);
1919 }
1920 fclose(f);
1921done:
1922 import_marks_file_done = 1;
1923}
1924
1925
1926static int read_next_command(void)
1927{
1928 static int stdin_eof = 0;
1929
1930 if (stdin_eof) {
61
←
Taking false branch
→
1931 unread_command_buf = 0;
1932 return EOF(-1);
1933 }
1934
1935 for (;;) {
62
←
Loop condition is true. Entering loop body
→
1936 const char *p;
1937
1938 if (unread_command_buf) {
63
←
Assuming 'unread_command_buf' is not equal to 0
→
64
←
Taking true branch
→
1939 unread_command_buf = 0;
1940 } else {
1941 struct recent_command *rc;
1942
1943 strbuf_detach(&command_buf, NULL((void*)0));
1944 stdin_eof = strbuf_getline_lf(&command_buf, stdin__stdinp);
1945 if (stdin_eof)
1946 return EOF(-1);
1947
1948 if (!seen_data_command
1949 && !starts_with(command_buf.buf, "feature ")
1950 && !starts_with(command_buf.buf, "option ")) {
1951 parse_argv();
1952 }
1953
1954 rc = rc_free;
1955 if (rc)
1956 rc_free = rc->next;
1957 else {
1958 rc = cmd_hist.next;
1959 cmd_hist.next = rc->next;
1960 cmd_hist.next->prev = &cmd_hist;
1961 free(rc->buf);
1962 }
1963
1964 rc->buf = command_buf.buf;
1965 rc->prev = cmd_tail;
1966 rc->next = cmd_hist.prev;
1967 rc->prev->next = rc;
1968 cmd_tail = rc;
1969 }
1970 if (skip_prefix(command_buf.buf, "get-mark ", &p)) {
65
←
Taking false branch
→
1971 parse_get_mark(p);
1972 continue;
1973 }
1974 if (skip_prefix(command_buf.buf, "cat-blob ", &p)) {
66
←
Taking true branch
→
1975 parse_cat_blob(p);
67
←
Calling 'parse_cat_blob'
→
1976 continue;
1977 }
1978 if (command_buf.buf[0] == '#')
1979 continue;
1980 return 0;
1981 }
1982}
1983
1984static void skip_optional_lf(void)
1985{
1986 int term_char = fgetc(stdin__stdinp);
1987 if (term_char != '\n' && term_char != EOF(-1))
1988 ungetc(term_char, stdin__stdinp);
1989}
1990
1991static void parse_mark(void)
1992{
1993 const char *v;
1994 if (skip_prefix(command_buf.buf, "mark :", &v)) {
1995 next_mark = strtoumax(v, NULL((void*)0), 10);
1996 read_next_command();
1997 }
1998 else
1999 next_mark = 0;
2000}
2001
2002static int parse_data(struct strbuf *sb, uintmax_t limit, uintmax_t *len_res)
2003{
2004 const char *data;
2005 strbuf_reset(sb)strbuf_setlen(sb, 0);
2006
2007 if (!skip_prefix(command_buf.buf, "data ", &data))
2008 die("Expected 'data n' command, found: %s", command_buf.buf);
2009
2010 if (skip_prefix(data, "<<", &data)) {
2011 char *term = xstrdup(data);
2012 size_t term_len = command_buf.len - (data - command_buf.buf);
2013
2014 strbuf_detach(&command_buf, NULL((void*)0));
2015 for (;;) {
2016 if (strbuf_getline_lf(&command_buf, stdin__stdinp) == EOF(-1))
2017 die("EOF in data (terminator '%s' not found)", term);
2018 if (term_len == command_buf.len
2019 && !strcmp(term, command_buf.buf))
2020 break;
2021 strbuf_addbuf(sb, &command_buf);
2022 strbuf_addch(sb, '\n');
2023 }
2024 free(term);
2025 }
2026 else {
2027 uintmax_t len = strtoumax(data, NULL((void*)0), 10);
2028 size_t n = 0, length = (size_t)len;
2029
2030 if (limit && limit < len) {
2031 *len_res = len;
2032 return 0;
2033 }
2034 if (length < len)
2035 die("data is too large to use in this context");
2036
2037 while (n < length) {
2038 size_t s = strbuf_fread(sb, length - n, stdin__stdinp);
2039 if (!s && feof(stdin__stdinp))
2040 die("EOF in data (%lu bytes remaining)",
2041 (unsigned long)(length - n));
2042 n += s;
2043 }
2044 }
2045
2046 skip_optional_lf();
2047 return 1;
2048}
2049
2050static int validate_raw_date(const char *src, struct strbuf *result)
2051{
2052 const char *orig_src = src;
2053 char *endp;
2054 unsigned long num;
2055
2056 errno(*__error()) = 0;
2057
2058 num = strtoul(src, &endp, 10);
2059 /* NEEDSWORK: perhaps check for reasonable values? */
2060 if (errno(*__error()) || endp == src || *endp != ' ')
2061 return -1;
2062
2063 src = endp + 1;
2064 if (*src != '-' && *src != '+')
2065 return -1;
2066
2067 num = strtoul(src + 1, &endp, 10);
2068 if (errno(*__error()) || endp == src + 1 || *endp || 1400 < num)
2069 return -1;
2070
2071 strbuf_addstr(result, orig_src);
2072 return 0;
2073}
2074
2075static char *parse_ident(const char *buf)
2076{
2077 const char *ltgt;
2078 size_t name_len;
2079 struct strbuf ident = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2080
2081 /* ensure there is a space delimiter even if there is no name */
2082 if (*buf == '<')
2083 --buf;
2084
2085 ltgt = buf + strcspn(buf, "<>");
2086 if (*ltgt != '<')
2087 die("Missing < in ident string: %s", buf);
2088 if (ltgt != buf && ltgt[-1] != ' ')
2089 die("Missing space before < in ident string: %s", buf);
2090 ltgt = ltgt + 1 + strcspn(ltgt + 1, "<>");
2091 if (*ltgt != '>')
2092 die("Missing > in ident string: %s", buf);
2093 ltgt++;
2094 if (*ltgt != ' ')
2095 die("Missing space after > in ident string: %s", buf);
2096 ltgt++;
2097 name_len = ltgt - buf;
2098 strbuf_add(&ident, buf, name_len);
2099
2100 switch (whenspec) {
2101 case WHENSPEC_RAW:
2102 if (validate_raw_date(ltgt, &ident) < 0)
2103 die("Invalid raw date \"%s\" in ident: %s", ltgt, buf);
2104 break;
2105 case WHENSPEC_RFC2822:
2106 if (parse_date(ltgt, &ident) < 0)
2107 die("Invalid rfc2822 date \"%s\" in ident: %s", ltgt, buf);
2108 break;
2109 case WHENSPEC_NOW:
2110 if (strcmp("now", ltgt))
2111 die("Date in ident must be 'now': %s", buf);
2112 datestamp(&ident);
2113 break;
2114 }
2115
2116 return strbuf_detach(&ident, NULL((void*)0));
2117}
2118
2119static void parse_and_store_blob(
2120 struct last_object *last,
2121 unsigned char *sha1out,
2122 uintmax_t mark)
2123{
2124 static struct strbuf buf = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2125 uintmax_t len;
2126
2127 if (parse_data(&buf, big_file_threshold, &len))
2128 store_object(OBJ_BLOB, &buf, last, sha1out, mark);
2129 else {
2130 if (last) {
2131 strbuf_release(&last->data);
2132 last->offset = 0;
2133 last->depth = 0;
2134 }
2135 stream_blob(len, sha1out, mark);
2136 skip_optional_lf();
2137 }
2138}
2139
2140static void parse_new_blob(void)
2141{
2142 read_next_command();
2143 parse_mark();
2144 parse_and_store_blob(&last_blob, NULL((void*)0), next_mark);
2145}
2146
2147static void unload_one_branch(void)
2148{
2149 while (cur_active_branches
2150 && cur_active_branches >= max_active_branches) {
2151 uintmax_t min_commit = ULONG_MAX(9223372036854775807L *2UL+1UL);
2152 struct branch *e, *l = NULL((void*)0), *p = NULL((void*)0);
2153
2154 for (e = active_branches; e; e = e->active_next_branch) {
2155 if (e->last_commit < min_commit) {
2156 p = l;
2157 min_commit = e->last_commit;
2158 }
2159 l = e;
2160 }
2161
2162 if (p) {
2163 e = p->active_next_branch;
2164 p->active_next_branch = e->active_next_branch;
2165 } else {
2166 e = active_branches;
2167 active_branches = e->active_next_branch;
2168 }
2169 e->active = 0;
2170 e->active_next_branch = NULL((void*)0);
2171 if (e->branch_tree.tree) {
2172 release_tree_content_recursive(e->branch_tree.tree);
2173 e->branch_tree.tree = NULL((void*)0);
2174 }
2175 cur_active_branches--;
2176 }
2177}
2178
2179static void load_branch(struct branch *b)
2180{
2181 load_tree(&b->branch_tree);
2182 if (!b->active) {
2183 b->active = 1;
2184 b->active_next_branch = active_branches;
2185 active_branches = b;
2186 cur_active_branches++;
2187 branch_load_count++;
2188 }
2189}
2190
2191static unsigned char convert_num_notes_to_fanout(uintmax_t num_notes)
2192{
2193 unsigned char fanout = 0;
2194 while ((num_notes >>= 8))
2195 fanout++;
2196 return fanout;
2197}
2198
2199static void construct_path_with_fanout(const char *hex_sha1,
2200 unsigned char fanout, char *path)
2201{
2202 unsigned int i = 0, j = 0;
2203 if (fanout >= 20)
2204 die("Too large fanout (%u)", fanout);
2205 while (fanout) {
2206 path[i++] = hex_sha1[j++];
2207 path[i++] = hex_sha1[j++];
2208 path[i++] = '/';
2209 fanout--;
2210 }
2211 memcpy(path + i, hex_sha1 + j, 40 - j)__builtin___memcpy_chk (path + i, hex_sha1 + j, 40 - j, __builtin_object_size
(path + i, 0));
2212 path[i + 40 - j] = '\0';
2213}
2214
2215static uintmax_t do_change_note_fanout(
2216 struct tree_entry *orig_root, struct tree_entry *root,
2217 char *hex_sha1, unsigned int hex_sha1_len,
2218 char *fullpath, unsigned int fullpath_len,
2219 unsigned char fanout)
2220{
2221 struct tree_content *t;
2222 struct tree_entry *e, leaf;
2223 unsigned int i, tmp_hex_sha1_len, tmp_fullpath_len;
2224 uintmax_t num_notes = 0;
2225 unsigned char sha1[20];
2226 char realpath[60];
2227
2228 if (!root->tree)
2229 load_tree(root);
2230 t = root->tree;
2231
2232 for (i = 0; t && i < t->entry_count; i++) {
2233 e = t->entries[i];
2234 tmp_hex_sha1_len = hex_sha1_len + e->name->str_len;
2235 tmp_fullpath_len = fullpath_len;
2236
2237 /*
2238 * We're interested in EITHER existing note entries (entries
2239 * with exactly 40 hex chars in path, not including directory
2240 * separators), OR directory entries that may contain note
2241 * entries (with < 40 hex chars in path).
2242 * Also, each path component in a note entry must be a multiple
2243 * of 2 chars.
2244 */
2245 if (!e->versions[1].mode ||
2246 tmp_hex_sha1_len > 40 ||
2247 e->name->str_len % 2)
2248 continue;
2249
2250 /* This _may_ be a note entry, or a subdir containing notes */
2251 memcpy(hex_sha1 + hex_sha1_len, e->name->str_dat,__builtin___memcpy_chk (hex_sha1 + hex_sha1_len, e->name->
str_dat, e->name->str_len, __builtin_object_size (hex_sha1
+ hex_sha1_len, 0))
2252 e->name->str_len)__builtin___memcpy_chk (hex_sha1 + hex_sha1_len, e->name->
str_dat, e->name->str_len, __builtin_object_size (hex_sha1
+ hex_sha1_len, 0));
2253 if (tmp_fullpath_len)
2254 fullpath[tmp_fullpath_len++] = '/';
2255 memcpy(fullpath + tmp_fullpath_len, e->name->str_dat,__builtin___memcpy_chk (fullpath + tmp_fullpath_len, e->name
->str_dat, e->name->str_len, __builtin_object_size (
fullpath + tmp_fullpath_len, 0))
2256 e->name->str_len)__builtin___memcpy_chk (fullpath + tmp_fullpath_len, e->name
->str_dat, e->name->str_len, __builtin_object_size (
fullpath + tmp_fullpath_len, 0));
2257 tmp_fullpath_len += e->name->str_len;
2258 fullpath[tmp_fullpath_len] = '\0';
2259
2260 if (tmp_hex_sha1_len == 40 && !get_sha1_hex(hex_sha1, sha1)) {
2261 /* This is a note entry */
2262 if (fanout == 0xff) {
2263 /* Counting mode, no rename */
2264 num_notes++;
2265 continue;
2266 }
2267 construct_path_with_fanout(hex_sha1, fanout, realpath);
2268 if (!strcmp(fullpath, realpath)) {
2269 /* Note entry is in correct location */
2270 num_notes++;
2271 continue;
2272 }
2273
2274 /* Rename fullpath to realpath */
2275 if (!tree_content_remove(orig_root, fullpath, &leaf, 0))
2276 die("Failed to remove path %s", fullpath);
2277 tree_content_set(orig_root, realpath,
2278 leaf.versions[1].sha1,
2279 leaf.versions[1].mode,
2280 leaf.tree);
2281 } else if (S_ISDIR(e->versions[1].mode)(((e->versions[1].mode) & 0170000) == 0040000)) {
2282 /* This is a subdir that may contain note entries */
2283 num_notes += do_change_note_fanout(orig_root, e,
2284 hex_sha1, tmp_hex_sha1_len,
2285 fullpath, tmp_fullpath_len, fanout);
2286 }
2287
2288 /* The above may have reallocated the current tree_content */
2289 t = root->tree;
2290 }
2291 return num_notes;
2292}
2293
2294static uintmax_t change_note_fanout(struct tree_entry *root,
2295 unsigned char fanout)
2296{
2297 char hex_sha1[40], path[60];
2298 return do_change_note_fanout(root, root, hex_sha1, 0, path, 0, fanout);
2299}
2300
2301/*
2302 * Given a pointer into a string, parse a mark reference:
2303 *
2304 * idnum ::= ':' bigint;
2305 *
2306 * Return the first character after the value in *endptr.
2307 *
2308 * Complain if the following character is not what is expected,
2309 * either a space or end of the string.
2310 */
2311static uintmax_t parse_mark_ref(const char *p, char **endptr)
2312{
2313 uintmax_t mark;
2314
2315 assert(*p == ':')(__builtin_expect(!(*p == ':'), 0) ? __assert_rtn(__func__, "fast-import.c"
, 2315, "*p == ':'") : (void)0);
2316 p++;
2317 mark = strtoumax(p, endptr, 10);
2318 if (*endptr == p)
2319 die("No value after ':' in mark: %s", command_buf.buf);
2320 return mark;
2321}
2322
2323/*
2324 * Parse the mark reference, and complain if this is not the end of
2325 * the string.
2326 */
2327static uintmax_t parse_mark_ref_eol(const char *p)
2328{
2329 char *end;
2330 uintmax_t mark;
2331
2332 mark = parse_mark_ref(p, &end);
2333 if (*end != '\0')
2334 die("Garbage after mark: %s", command_buf.buf);
2335 return mark;
2336}
2337
2338/*
2339 * Parse the mark reference, demanding a trailing space. Return a
2340 * pointer to the space.
2341 */
2342static uintmax_t parse_mark_ref_space(const char **p)
2343{
2344 uintmax_t mark;
2345 char *end;
2346
2347 mark = parse_mark_ref(*p, &end);
2348 if (*end++ != ' ')
2349 die("Missing space after mark: %s", command_buf.buf);
2350 *p = end;
2351 return mark;
2352}
2353
2354static void file_change_m(const char *p, struct branch *b)
2355{
2356 static struct strbuf uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2357 const char *endp;
2358 struct object_entry *oe;
2359 unsigned char sha1[20];
2360 uint16_t mode, inline_data = 0;
2361
2362 p = get_mode(p, &mode);
2363 if (!p)
2364 die("Corrupt mode: %s", command_buf.buf);
2365 switch (mode) {
2366 case 0644:
2367 case 0755:
2368 mode |= S_IFREG0100000;
2369 case S_IFREG0100000 | 0644:
2370 case S_IFREG0100000 | 0755:
2371 case S_IFLNK0120000:
2372 case S_IFDIR0040000:
2373 case S_IFGITLINK0160000:
2374 /* ok */
2375 break;
2376 default:
2377 die("Corrupt mode: %s", command_buf.buf);
2378 }
2379
2380 if (*p == ':') {
2381 oe = find_mark(parse_mark_ref_space(&p));
2382 hashcpy(sha1, oe->idx.sha1);
2383 } else if (skip_prefix(p, "inline ", &p)) {
2384 inline_data = 1;
2385 oe = NULL((void*)0); /* not used with inline_data, but makes gcc happy */
2386 } else {
2387 if (get_sha1_hex(p, sha1))
2388 die("Invalid dataref: %s", command_buf.buf);
2389 oe = find_object(sha1);
2390 p += 40;
2391 if (*p++ != ' ')
2392 die("Missing space after SHA1: %s", command_buf.buf);
2393 }
2394
2395 strbuf_reset(&uq)strbuf_setlen(&uq, 0);
2396 if (!unquote_c_style(&uq, p, &endp)) {
2397 if (*endp)
2398 die("Garbage after path in: %s", command_buf.buf);
2399 p = uq.buf;
2400 }
2401
2402 /* Git does not track empty, non-toplevel directories. */
2403 if (S_ISDIR(mode)(((mode) & 0170000) == 0040000) && !hashcmp(sha1, EMPTY_TREE_SHA1_BIN(empty_tree_oid.hash)) && *p) {
2404 tree_content_remove(&b->branch_tree, p, NULL((void*)0), 0);
2405 return;
2406 }
2407
2408 if (S_ISGITLINK(mode)(((mode) & 0170000) == 0160000)) {
2409 if (inline_data)
2410 die("Git links cannot be specified 'inline': %s",
2411 command_buf.buf);
2412 else if (oe) {
2413 if (oe->type != OBJ_COMMIT)
2414 die("Not a commit (actually a %s): %s",
2415 typename(oe->type), command_buf.buf);
2416 }
2417 /*
2418 * Accept the sha1 without checking; it expected to be in
2419 * another repository.
2420 */
2421 } else if (inline_data) {
2422 if (S_ISDIR(mode)(((mode) & 0170000) == 0040000))
2423 die("Directories cannot be specified 'inline': %s",
2424 command_buf.buf);
2425 if (p != uq.buf) {
2426 strbuf_addstr(&uq, p);
2427 p = uq.buf;
2428 }
2429 read_next_command();
2430 parse_and_store_blob(&last_blob, sha1, 0);
2431 } else {
2432 enum object_type expected = S_ISDIR(mode)(((mode) & 0170000) == 0040000) ?
2433 OBJ_TREE: OBJ_BLOB;
2434 enum object_type type = oe ? oe->type :
2435 sha1_object_info(sha1, NULL((void*)0));
2436 if (type < 0)
2437 die("%s not found: %s",
2438 S_ISDIR(mode)(((mode) & 0170000) == 0040000) ? "Tree" : "Blob",
2439 command_buf.buf);
2440 if (type != expected)
2441 die("Not a %s (actually a %s): %s",
2442 typename(expected), typename(type),
2443 command_buf.buf);
2444 }
2445
2446 if (!*p) {
2447 tree_content_replace(&b->branch_tree, sha1, mode, NULL((void*)0));
2448 return;
2449 }
2450 tree_content_set(&b->branch_tree, p, sha1, mode, NULL((void*)0));
2451}
2452
2453static void file_change_d(const char *p, struct branch *b)
2454{
2455 static struct strbuf uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2456 const char *endp;
2457
2458 strbuf_reset(&uq)strbuf_setlen(&uq, 0);
2459 if (!unquote_c_style(&uq, p, &endp)) {
2460 if (*endp)
2461 die("Garbage after path in: %s", command_buf.buf);
2462 p = uq.buf;
2463 }
2464 tree_content_remove(&b->branch_tree, p, NULL((void*)0), 1);
2465}
2466
2467static void file_change_cr(const char *s, struct branch *b, int rename)
2468{
2469 const char *d;
2470 static struct strbuf s_uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2471 static struct strbuf d_uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2472 const char *endp;
2473 struct tree_entry leaf;
2474
2475 strbuf_reset(&s_uq)strbuf_setlen(&s_uq, 0);
2476 if (!unquote_c_style(&s_uq, s, &endp)) {
2477 if (*endp != ' ')
2478 die("Missing space after source: %s", command_buf.buf);
2479 } else {
2480 endp = strchr(s, ' ');
2481 if (!endp)
2482 die("Missing space after source: %s", command_buf.buf);
2483 strbuf_add(&s_uq, s, endp - s);
2484 }
2485 s = s_uq.buf;
2486
2487 endp++;
2488 if (!*endp)
2489 die("Missing dest: %s", command_buf.buf);
2490
2491 d = endp;
2492 strbuf_reset(&d_uq)strbuf_setlen(&d_uq, 0);
2493 if (!unquote_c_style(&d_uq, d, &endp)) {
2494 if (*endp)
2495 die("Garbage after dest in: %s", command_buf.buf);
2496 d = d_uq.buf;
2497 }
2498
2499 memset(&leaf, 0, sizeof(leaf))__builtin___memset_chk (&leaf, 0, sizeof(leaf), __builtin_object_size
(&leaf, 0));
2500 if (rename)
2501 tree_content_remove(&b->branch_tree, s, &leaf, 1);
2502 else
2503 tree_content_get(&b->branch_tree, s, &leaf, 1);
2504 if (!leaf.versions[1].mode)
2505 die("Path %s not in branch", s);
2506 if (!*d) { /* C "path/to/subdir" "" */
2507 tree_content_replace(&b->branch_tree,
2508 leaf.versions[1].sha1,
2509 leaf.versions[1].mode,
2510 leaf.tree);
2511 return;
2512 }
2513 tree_content_set(&b->branch_tree, d,
2514 leaf.versions[1].sha1,
2515 leaf.versions[1].mode,
2516 leaf.tree);
2517}
2518
2519static void note_change_n(const char *p, struct branch *b, unsigned char *old_fanout)
2520{
2521 static struct strbuf uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2522 struct object_entry *oe;
2523 struct branch *s;
2524 unsigned char sha1[20], commit_sha1[20];
2525 char path[60];
2526 uint16_t inline_data = 0;
2527 unsigned char new_fanout;
2528
2529 /*
2530 * When loading a branch, we don't traverse its tree to count the real
2531 * number of notes (too expensive to do this for all non-note refs).
2532 * This means that recently loaded notes refs might incorrectly have
2533 * b->num_notes == 0, and consequently, old_fanout might be wrong.
2534 *
2535 * Fix this by traversing the tree and counting the number of notes
2536 * when b->num_notes == 0. If the notes tree is truly empty, the
2537 * calculation should not take long.
2538 */
2539 if (b->num_notes == 0 && *old_fanout == 0) {
2540 /* Invoke change_note_fanout() in "counting mode". */
2541 b->num_notes = change_note_fanout(&b->branch_tree, 0xff);
2542 *old_fanout = convert_num_notes_to_fanout(b->num_notes);
2543 }
2544
2545 /* Now parse the notemodify command. */
2546 /* <dataref> or 'inline' */
2547 if (*p == ':') {
2548 oe = find_mark(parse_mark_ref_space(&p));
2549 hashcpy(sha1, oe->idx.sha1);
2550 } else if (skip_prefix(p, "inline ", &p)) {
2551 inline_data = 1;
2552 oe = NULL((void*)0); /* not used with inline_data, but makes gcc happy */
2553 } else {
2554 if (get_sha1_hex(p, sha1))
2555 die("Invalid dataref: %s", command_buf.buf);
2556 oe = find_object(sha1);
2557 p += 40;
2558 if (*p++ != ' ')
2559 die("Missing space after SHA1: %s", command_buf.buf);
2560 }
2561
2562 /* <commit-ish> */
2563 s = lookup_branch(p);
2564 if (s) {
2565 if (is_null_sha1(s->sha1))
2566 die("Can't add a note on empty branch.");
2567 hashcpy(commit_sha1, s->sha1);
2568 } else if (*p == ':') {
2569 uintmax_t commit_mark = parse_mark_ref_eol(p);
2570 struct object_entry *commit_oe = find_mark(commit_mark);
2571 if (commit_oe->type != OBJ_COMMIT)
2572 die("Mark :%" PRIuMAX"j" "u" " not a commit", commit_mark);
2573 hashcpy(commit_sha1, commit_oe->idx.sha1);
2574 } else if (!get_sha1(p, commit_sha1)) {
2575 unsigned long size;
2576 char *buf = read_object_with_reference(commit_sha1,
2577 commit_type, &size, commit_sha1);
2578 if (!buf || size < 46)
2579 die("Not a valid commit: %s", p);
2580 free(buf);
2581 } else
2582 die("Invalid ref name or SHA1 expression: %s", p);
2583
2584 if (inline_data) {
2585 if (p != uq.buf) {
2586 strbuf_addstr(&uq, p);
2587 p = uq.buf;
2588 }
2589 read_next_command();
2590 parse_and_store_blob(&last_blob, sha1, 0);
2591 } else if (oe) {
2592 if (oe->type != OBJ_BLOB)
2593 die("Not a blob (actually a %s): %s",
2594 typename(oe->type), command_buf.buf);
2595 } else if (!is_null_sha1(sha1)) {
2596 enum object_type type = sha1_object_info(sha1, NULL((void*)0));
2597 if (type < 0)
2598 die("Blob not found: %s", command_buf.buf);
2599 if (type != OBJ_BLOB)
2600 die("Not a blob (actually a %s): %s",
2601 typename(type), command_buf.buf);
2602 }
2603
2604 construct_path_with_fanout(sha1_to_hex(commit_sha1), *old_fanout, path);
2605 if (tree_content_remove(&b->branch_tree, path, NULL((void*)0), 0))
2606 b->num_notes--;
2607
2608 if (is_null_sha1(sha1))
2609 return; /* nothing to insert */
2610
2611 b->num_notes++;
2612 new_fanout = convert_num_notes_to_fanout(b->num_notes);
2613 construct_path_with_fanout(sha1_to_hex(commit_sha1), new_fanout, path);
2614 tree_content_set(&b->branch_tree, path, sha1, S_IFREG0100000 | 0644, NULL((void*)0));
2615}
2616
2617static void file_change_deleteall(struct branch *b)
2618{
2619 release_tree_content_recursive(b->branch_tree.tree);
2620 hashclr(b->branch_tree.versions[0].sha1);
2621 hashclr(b->branch_tree.versions[1].sha1);
2622 load_tree(&b->branch_tree);
2623 b->num_notes = 0;
2624}
2625
2626static void parse_from_commit(struct branch *b, char *buf, unsigned long size)
2627{
2628 if (!buf || size < 46)
2629 die("Not a valid commit: %s", sha1_to_hex(b->sha1));
2630 if (memcmp("tree ", buf, 5)
2631 || get_sha1_hex(buf + 5, b->branch_tree.versions[1].sha1))
2632 die("The commit %s is corrupt", sha1_to_hex(b->sha1));
2633 hashcpy(b->branch_tree.versions[0].sha1,
2634 b->branch_tree.versions[1].sha1);
2635}
2636
2637static void parse_from_existing(struct branch *b)
2638{
2639 if (is_null_sha1(b->sha1)) {
2640 hashclr(b->branch_tree.versions[0].sha1);
2641 hashclr(b->branch_tree.versions[1].sha1);
2642 } else {
2643 unsigned long size;
2644 char *buf;
2645
2646 buf = read_object_with_reference(b->sha1,
2647 commit_type, &size, b->sha1);
2648 parse_from_commit(b, buf, size);
2649 free(buf);
2650 }
2651}
2652
2653static int parse_from(struct branch *b)
2654{
2655 const char *from;
2656 struct branch *s;
2657 unsigned char sha1[20];
2658
2659 if (!skip_prefix(command_buf.buf, "from ", &from))
54
←
Taking false branch
→
2660 return 0;
2661
2662 hashcpy(sha1, b->branch_tree.versions[1].sha1);
2663
2664 s = lookup_branch(from);
2665 if (b == s)
55
←
Taking false branch
→
2666 die("Can't create a branch from itself: %s", b->name);
2667 else if (s) {
56
←
Taking false branch
→
2668 unsigned char *t = s->branch_tree.versions[1].sha1;
2669 hashcpy(b->sha1, s->sha1);
2670 hashcpy(b->branch_tree.versions[0].sha1, t);
2671 hashcpy(b->branch_tree.versions[1].sha1, t);
2672 } else if (*from == ':') {
57
←
Taking false branch
→
2673 uintmax_t idnum = parse_mark_ref_eol(from);
2674 struct object_entry *oe = find_mark(idnum);
2675 if (oe->type != OBJ_COMMIT)
2676 die("Mark :%" PRIuMAX"j" "u" " not a commit", idnum);
2677 if (hashcmp(b->sha1, oe->idx.sha1)) {
2678 hashcpy(b->sha1, oe->idx.sha1);
2679 if (oe->pack_id != MAX_PACK_ID((1<<16)-1)) {
2680 unsigned long size;
2681 char *buf = gfi_unpack_entry(oe, &size);
2682 parse_from_commit(b, buf, size);
2683 free(buf);
2684 } else
2685 parse_from_existing(b);
2686 }
2687 } else if (!get_sha1(from, b->sha1)) {
58
←
Taking true branch
→
2688 parse_from_existing(b);
2689 if (is_null_sha1(b->sha1))
59
←
Taking false branch
→
2690 b->delete = 1;
2691 }
2692 else
2693 die("Invalid ref name or SHA1 expression: %s", from);
2694
2695 if (b->branch_tree.tree && hashcmp(sha1, b->branch_tree.versions[1].sha1)) {
2696 release_tree_content_recursive(b->branch_tree.tree);
2697 b->branch_tree.tree = NULL((void*)0);
2698 }
2699
2700 read_next_command();
60
←
Calling 'read_next_command'
→
2701 return 1;
2702}
2703
2704static struct hash_list *parse_merge(unsigned int *count)
2705{
2706 struct hash_list *list = NULL((void*)0), **tail = &list, *n;
2707 const char *from;
2708 struct branch *s;
2709
2710 *count = 0;
2711 while (skip_prefix(command_buf.buf, "merge ", &from)) {
2712 n = xmalloc(sizeof(*n));
2713 s = lookup_branch(from);
2714 if (s)
2715 hashcpy(n->sha1, s->sha1);
2716 else if (*from == ':') {
2717 uintmax_t idnum = parse_mark_ref_eol(from);
2718 struct object_entry *oe = find_mark(idnum);
2719 if (oe->type != OBJ_COMMIT)
2720 die("Mark :%" PRIuMAX"j" "u" " not a commit", idnum);
2721 hashcpy(n->sha1, oe->idx.sha1);
2722 } else if (!get_sha1(from, n->sha1)) {
2723 unsigned long size;
2724 char *buf = read_object_with_reference(n->sha1,
2725 commit_type, &size, n->sha1);
2726 if (!buf || size < 46)
2727 die("Not a valid commit: %s", from);
2728 free(buf);
2729 } else
2730 die("Invalid ref name or SHA1 expression: %s", from);
2731
2732 n->next = NULL((void*)0);
2733 *tail = n;
2734 tail = &n->next;
2735
2736 (*count)++;
2737 read_next_command();
2738 }
2739 return list;
2740}
2741
2742static void parse_new_commit(const char *arg)
2743{
2744 static struct strbuf msg = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2745 struct branch *b;
2746 char *author = NULL((void*)0);
2747 char *committer = NULL((void*)0);
2748 struct hash_list *merge_list = NULL((void*)0);
2749 unsigned int merge_count;
2750 unsigned char prev_fanout, new_fanout;
2751 const char *v;
2752
2753 b = lookup_branch(arg);
2754 if (!b)
2755 b = new_branch(arg);
2756
2757 read_next_command();
2758 parse_mark();
2759 if (skip_prefix(command_buf.buf, "author ", &v)) {
2760 author = parse_ident(v);
2761 read_next_command();
2762 }
2763 if (skip_prefix(command_buf.buf, "committer ", &v)) {
2764 committer = parse_ident(v);
2765 read_next_command();
2766 }
2767 if (!committer)
2768 die("Expected committer but didn't get one");
2769 parse_data(&msg, 0, NULL((void*)0));
2770 read_next_command();
2771 parse_from(b);
2772 merge_list = parse_merge(&merge_count);
2773
2774 /* ensure the branch is active/loaded */
2775 if (!b->branch_tree.tree || !max_active_branches) {
2776 unload_one_branch();
2777 load_branch(b);
2778 }
2779
2780 prev_fanout = convert_num_notes_to_fanout(b->num_notes);
2781
2782 /* file_change* */
2783 while (command_buf.len > 0) {
2784 if (skip_prefix(command_buf.buf, "M ", &v))
2785 file_change_m(v, b);
2786 else if (skip_prefix(command_buf.buf, "D ", &v))
2787 file_change_d(v, b);
2788 else if (skip_prefix(command_buf.buf, "R ", &v))
2789 file_change_cr(v, b, 1);
2790 else if (skip_prefix(command_buf.buf, "C ", &v))
2791 file_change_cr(v, b, 0);
2792 else if (skip_prefix(command_buf.buf, "N ", &v))
2793 note_change_n(v, b, &prev_fanout);
2794 else if (!strcmp("deleteall", command_buf.buf))
2795 file_change_deleteall(b);
2796 else if (skip_prefix(command_buf.buf, "ls ", &v))
2797 parse_ls(v, b);
2798 else {
2799 unread_command_buf = 1;
2800 break;
2801 }
2802 if (read_next_command() == EOF(-1))
2803 break;
2804 }
2805
2806 new_fanout = convert_num_notes_to_fanout(b->num_notes);
2807 if (new_fanout != prev_fanout)
2808 b->num_notes = change_note_fanout(&b->branch_tree, new_fanout);
2809
2810 /* build the tree and the commit */
2811 store_tree(&b->branch_tree);
2812 hashcpy(b->branch_tree.versions[0].sha1,
2813 b->branch_tree.versions[1].sha1);
2814
2815 strbuf_reset(&new_data)strbuf_setlen(&new_data, 0);
2816 strbuf_addf(&new_data, "tree %s\n",
2817 sha1_to_hex(b->branch_tree.versions[1].sha1));
2818 if (!is_null_sha1(b->sha1))
2819 strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(b->sha1));
2820 while (merge_list) {
2821 struct hash_list *next = merge_list->next;
2822 strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(merge_list->sha1));
2823 free(merge_list);
2824 merge_list = next;
2825 }
2826 strbuf_addf(&new_data,
2827 "author %s\n"
2828 "committer %s\n"
2829 "\n",
2830 author ? author : committer, committer);
2831 strbuf_addbuf(&new_data, &msg);
2832 free(author);
2833 free(committer);
2834
2835 if (!store_object(OBJ_COMMIT, &new_data, NULL((void*)0), b->sha1, next_mark))
2836 b->pack_id = pack_id;
2837 b->last_commit = object_count_by_type[OBJ_COMMIT];
2838}
2839
2840static void parse_new_tag(const char *arg)
2841{
2842 static struct strbuf msg = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2843 const char *from;
2844 char *tagger;
2845 struct branch *s;
2846 struct tag *t;
2847 uintmax_t from_mark = 0;
2848 unsigned char sha1[20];
2849 enum object_type type;
2850 const char *v;
2851
2852 t = pool_alloc(sizeof(struct tag));
2853 memset(t, 0, sizeof(struct tag))__builtin___memset_chk (t, 0, sizeof(struct tag), __builtin_object_size
(t, 0));
2854 t->name = pool_strdup(arg);
2855 if (last_tag)
2856 last_tag->next_tag = t;
2857 else
2858 first_tag = t;
2859 last_tag = t;
2860 read_next_command();
2861
2862 /* from ... */
2863 if (!skip_prefix(command_buf.buf, "from ", &from))
2864 die("Expected from command, got %s", command_buf.buf);
2865 s = lookup_branch(from);
2866 if (s) {
2867 if (is_null_sha1(s->sha1))
2868 die("Can't tag an empty branch.");
2869 hashcpy(sha1, s->sha1);
2870 type = OBJ_COMMIT;
2871 } else if (*from == ':') {
2872 struct object_entry *oe;
2873 from_mark = parse_mark_ref_eol(from);
2874 oe = find_mark(from_mark);
2875 type = oe->type;
2876 hashcpy(sha1, oe->idx.sha1);
2877 } else if (!get_sha1(from, sha1)) {
2878 struct object_entry *oe = find_object(sha1);
2879 if (!oe) {
2880 type = sha1_object_info(sha1, NULL((void*)0));
2881 if (type < 0)
2882 die("Not a valid object: %s", from);
2883 } else
2884 type = oe->type;
2885 } else
2886 die("Invalid ref name or SHA1 expression: %s", from);
2887 read_next_command();
2888
2889 /* tagger ... */
2890 if (skip_prefix(command_buf.buf, "tagger ", &v)) {
2891 tagger = parse_ident(v);
2892 read_next_command();
2893 } else
2894 tagger = NULL((void*)0);
2895
2896 /* tag payload/message */
2897 parse_data(&msg, 0, NULL((void*)0));
2898
2899 /* build the tag object */
2900 strbuf_reset(&new_data)strbuf_setlen(&new_data, 0);
2901
2902 strbuf_addf(&new_data,
2903 "object %s\n"
2904 "type %s\n"
2905 "tag %s\n",
2906 sha1_to_hex(sha1), typename(type), t->name);
2907 if (tagger)
2908 strbuf_addf(&new_data,
2909 "tagger %s\n", tagger);
2910 strbuf_addch(&new_data, '\n');
2911 strbuf_addbuf(&new_data, &msg);
2912 free(tagger);
2913
2914 if (store_object(OBJ_TAG, &new_data, NULL((void*)0), t->sha1, 0))
2915 t->pack_id = MAX_PACK_ID((1<<16)-1);
2916 else
2917 t->pack_id = pack_id;
2918}
2919
2920static void parse_reset_branch(const char *arg)
2921{
2922 struct branch *b;
2923
2924 b = lookup_branch(arg);
2925 if (b) {
52
←
Taking false branch
→
2926 hashclr(b->sha1);
2927 hashclr(b->branch_tree.versions[0].sha1);
2928 hashclr(b->branch_tree.versions[1].sha1);
2929 if (b->branch_tree.tree) {
2930 release_tree_content_recursive(b->branch_tree.tree);
2931 b->branch_tree.tree = NULL((void*)0);
2932 }
2933 }
2934 else
2935 b = new_branch(arg);
2936 read_next_command();
2937 parse_from(b);
53
←
Calling 'parse_from'
→
2938 if (command_buf.len > 0)
2939 unread_command_buf = 1;
2940}
2941
2942static void cat_blob_write(const char *buf, unsigned long size)
2943{
2944 if (write_in_full(cat_blob_fd, buf, size) != size)
2945 die_errno("Write to frontend failed");
2946}
2947
2948static void cat_blob(struct object_entry *oe, unsigned char sha1[20])
2949{
2950 struct strbuf line = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
2951 unsigned long size;
2952 enum object_type type = 0;
2953 char *buf;
2954
2955 if (!oe || oe->pack_id == MAX_PACK_ID((1<<16)-1)) {
2956 buf = read_sha1_file(sha1, &type, &size);
2957 } else {
2958 type = oe->type;
2959 buf = gfi_unpack_entry(oe, &size);
2960 }
2961
2962 /*
2963 * Output based on batch_one_object() from cat-file.c.
2964 */
2965 if (type <= 0) {
2966 strbuf_reset(&line)strbuf_setlen(&line, 0);
2967 strbuf_addf(&line, "%s missing\n", sha1_to_hex(sha1));
2968 cat_blob_write(line.buf, line.len);
2969 strbuf_release(&line);
2970 free(buf);
2971 return;
2972 }
2973 if (!buf)
2974 die("Can't read object %s", sha1_to_hex(sha1));
2975 if (type != OBJ_BLOB)
2976 die("Object %s is a %s but a blob was expected.",
2977 sha1_to_hex(sha1), typename(type));
2978 strbuf_reset(&line)strbuf_setlen(&line, 0);
2979 strbuf_addf(&line, "%s %s %lu\n", sha1_to_hex(sha1),
2980 typename(type), size);
2981 cat_blob_write(line.buf, line.len);
2982 strbuf_release(&line);
2983 cat_blob_write(buf, size);
2984 cat_blob_write("\n", 1);
2985 if (oe && oe->pack_id == pack_id) {
2986 last_blob.offset = oe->idx.offset;
2987 strbuf_attach(&last_blob.data, buf, size, size);
2988 last_blob.depth = oe->depth;
2989 } else
2990 free(buf);
2991}
2992
2993static void parse_get_mark(const char *p)
2994{
2995 struct object_entry *oe = oe;
2996 char output[42];
2997
2998 /* get-mark SP <object> LF */
2999 if (*p != ':')
3000 die("Not a mark: %s", p);
3001
3002 oe = find_mark(parse_mark_ref_eol(p));
3003 if (!oe)
3004 die("Unknown mark: %s", command_buf.buf);
3005
3006 snprintf(output, sizeof(output), "%s\n", sha1_to_hex(oe->idx.sha1))__builtin___snprintf_chk (output, sizeof(output), 0, __builtin_object_size
(output, 2 > 1 ? 1 : 0), "%s\n", sha1_to_hex(oe->idx.sha1
));
3007 cat_blob_write(output, 41);
3008}
3009
3010static void parse_cat_blob(const char *p)
3011{
3012 struct object_entry *oe = oe;
68
←
Assigned value is garbage or undefined
3013 unsigned char sha1[20];
3014
3015 /* cat-blob SP <object> LF */
3016 if (*p == ':') {
3017 oe = find_mark(parse_mark_ref_eol(p));
3018 if (!oe)
3019 die("Unknown mark: %s", command_buf.buf);
3020 hashcpy(sha1, oe->idx.sha1);
3021 } else {
3022 if (get_sha1_hex(p, sha1))
3023 die("Invalid dataref: %s", command_buf.buf);
3024 if (p[40])
3025 die("Garbage after SHA1: %s", command_buf.buf);
3026 oe = find_object(sha1);
3027 }
3028
3029 cat_blob(oe, sha1);
3030}
3031
3032static struct object_entry *dereference(struct object_entry *oe,
3033 unsigned char sha1[20])
3034{
3035 unsigned long size;
3036 char *buf = NULL((void*)0);
3037 if (!oe) {
3038 enum object_type type = sha1_object_info(sha1, NULL((void*)0));
3039 if (type < 0)
3040 die("object not found: %s", sha1_to_hex(sha1));
3041 /* cache it! */
3042 oe = insert_object(sha1);
3043 oe->type = type;
3044 oe->pack_id = MAX_PACK_ID((1<<16)-1);
3045 oe->idx.offset = 1;
3046 }
3047 switch (oe->type) {
3048 case OBJ_TREE: /* easy case. */
3049 return oe;
3050 case OBJ_COMMIT:
3051 case OBJ_TAG:
3052 break;
3053 default:
3054 die("Not a tree-ish: %s", command_buf.buf);
3055 }
3056
3057 if (oe->pack_id != MAX_PACK_ID((1<<16)-1)) { /* in a pack being written */
3058 buf = gfi_unpack_entry(oe, &size);
3059 } else {
3060 enum object_type unused;
3061 buf = read_sha1_file(sha1, &unused, &size);
3062 }
3063 if (!buf)
3064 die("Can't load object %s", sha1_to_hex(sha1));
3065
3066 /* Peel one layer. */
3067 switch (oe->type) {
3068 case OBJ_TAG:
3069 if (size < 40 + strlen("object ") ||
3070 get_sha1_hex(buf + strlen("object "), sha1))
3071 die("Invalid SHA1 in tag: %s", command_buf.buf);
3072 break;
3073 case OBJ_COMMIT:
3074 if (size < 40 + strlen("tree ") ||
3075 get_sha1_hex(buf + strlen("tree "), sha1))
3076 die("Invalid SHA1 in commit: %s", command_buf.buf);
3077 }
3078
3079 free(buf);
3080 return find_object(sha1);
3081}
3082
3083static struct object_entry *parse_treeish_dataref(const char **p)
3084{
3085 unsigned char sha1[20];
3086 struct object_entry *e;
3087
3088 if (**p == ':') { /* <mark> */
3089 e = find_mark(parse_mark_ref_space(p));
3090 if (!e)
3091 die("Unknown mark: %s", command_buf.buf);
3092 hashcpy(sha1, e->idx.sha1);
3093 } else { /* <sha1> */
3094 if (get_sha1_hex(*p, sha1))
3095 die("Invalid dataref: %s", command_buf.buf);
3096 e = find_object(sha1);
3097 *p += 40;
3098 if (*(*p)++ != ' ')
3099 die("Missing space after tree-ish: %s", command_buf.buf);
3100 }
3101
3102 while (!e || e->type != OBJ_TREE)
3103 e = dereference(e, sha1);
3104 return e;
3105}
3106
3107static void print_ls(int mode, const unsigned char *sha1, const char *path)
3108{
3109 static struct strbuf line = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
3110
3111 /* See show_tree(). */
3112 const char *type =
3113 S_ISGITLINK(mode)(((mode) & 0170000) == 0160000) ? commit_type :
3114 S_ISDIR(mode)(((mode) & 0170000) == 0040000) ? tree_type :
3115 blob_type;
3116
3117 if (!mode) {
3118 /* missing SP path LF */
3119 strbuf_reset(&line)strbuf_setlen(&line, 0);
3120 strbuf_addstr(&line, "missing ");
3121 quote_c_style(path, &line, NULL((void*)0), 0);
3122 strbuf_addch(&line, '\n');
3123 } else {
3124 /* mode SP type SP object_name TAB path LF */
3125 strbuf_reset(&line)strbuf_setlen(&line, 0);
3126 strbuf_addf(&line, "%06o %s %s\t",
3127 mode & ~NO_DELTA0004000, type, sha1_to_hex(sha1));
3128 quote_c_style(path, &line, NULL((void*)0), 0);
3129 strbuf_addch(&line, '\n');
3130 }
3131 cat_blob_write(line.buf, line.len);
3132}
3133
3134static void parse_ls(const char *p, struct branch *b)
3135{
3136 struct tree_entry *root = NULL((void*)0);
3137 struct tree_entry leaf = {NULL((void*)0)};
3138
3139 /* ls SP (<tree-ish> SP)? <path> */
3140 if (*p == '"') {
3141 if (!b)
3142 die("Not in a commit: %s", command_buf.buf);
3143 root = &b->branch_tree;
3144 } else {
3145 struct object_entry *e = parse_treeish_dataref(&p);
3146 root = new_tree_entry();
3147 hashcpy(root->versions[1].sha1, e->idx.sha1);
3148 if (!is_null_sha1(root->versions[1].sha1))
3149 root->versions[1].mode = S_IFDIR0040000;
3150 load_tree(root);
3151 }
3152 if (*p == '"') {
3153 static struct strbuf uq = STRBUF_INIT{ 0, 0, strbuf_slopbuf };
3154 const char *endp;
3155 strbuf_reset(&uq)strbuf_setlen(&uq, 0);
3156 if (unquote_c_style(&uq, p, &endp))
3157 die("Invalid path: %s", command_buf.buf);
3158 if (*endp)
3159 die("Garbage after path in: %s", command_buf.buf);
3160 p = uq.buf;
3161 }
3162 tree_content_get(root, p, &leaf, 1);
3163 /*
3164 * A directory in preparation would have a sha1 of zero
3165 * until it is saved. Save, for simplicity.
3166 */
3167 if (S_ISDIR(leaf.versions[1].mode)(((leaf.versions[1].mode) & 0170000) == 0040000))
3168 store_tree(&leaf);
3169
3170 print_ls(leaf.versions[1].mode, leaf.versions[1].sha1, p);
3171 if (leaf.tree)
3172 release_tree_content_recursive(leaf.tree);
3173 if (!b || root != &b->branch_tree)
3174 release_tree_entry(root);
3175}
3176
3177static void checkpoint(void)
3178{
3179 checkpoint_requested = 0;
3180 if (object_count) {
3181 cycle_packfile();
3182 dump_branches();
3183 dump_tags();
3184 dump_marks();
3185 }
3186}
3187
3188static void parse_checkpoint(void)
3189{
3190 checkpoint_requested = 1;
3191 skip_optional_lf();
3192}
3193
3194static void parse_progress(void)
3195{
3196 fwrite(command_buf.buf, 1, command_buf.len, stdout__stdoutp);
3197 fputc('\n', stdout__stdoutp);
3198 fflush(stdout__stdoutp);
3199 skip_optional_lf();
3200}
3201
3202static char* make_fast_import_path(const char *path)
3203{
3204 if (!relative_marks_paths || is_absolute_path(path))
3205 return xstrdup(path);
3206 return xstrdup(git_path("info/fast-import/%s", path));
3207}
3208
3209static void option_import_marks(const char *marks,
3210 int from_stream, int ignore_missing)
3211{
3212 if (import_marks_file) {
3213 if (from_stream)
3214 die("Only one import-marks command allowed per stream");
3215
3216 /* read previous mark file */
3217 if(!import_marks_file_from_stream)
3218 read_marks();
3219 }
3220
3221 import_marks_file = make_fast_import_path(marks);
3222 safe_create_leading_directories_const(import_marks_file);
3223 import_marks_file_from_stream = from_stream;
3224 import_marks_file_ignore_missing = ignore_missing;
3225}
3226
3227static void option_date_format(const char *fmt)
3228{
3229 if (!strcmp(fmt, "raw"))
3230 whenspec = WHENSPEC_RAW;
3231 else if (!strcmp(fmt, "rfc2822"))
3232 whenspec = WHENSPEC_RFC2822;
3233 else if (!strcmp(fmt, "now"))
3234 whenspec = WHENSPEC_NOW;
3235 else
3236 die("unknown --date-format argument %s", fmt);
3237}
3238
3239static unsigned long ulong_arg(const char *option, const char *arg)
3240{
3241 char *endptr;
3242 unsigned long rv = strtoul(arg, &endptr, 0);
3243 if (strchr(arg, '-') || endptr == arg || *endptr)
3244 die("%s: argument must be a non-negative integer", option);
3245 return rv;
3246}
3247
3248static void option_depth(const char *depth)
3249{
3250 max_depth = ulong_arg("--depth", depth);
3251 if (max_depth > MAX_DEPTH((1<<13)-1))
3252 die("--depth cannot exceed %u", MAX_DEPTH((1<<13)-1));
3253}
3254
3255static void option_active_branches(const char *branches)
3256{
3257 max_active_branches = ulong_arg("--active-branches", branches);
3258}
3259
3260static void option_export_marks(const char *marks)
3261{
3262 export_marks_file = make_fast_import_path(marks);
3263 safe_create_leading_directories_const(export_marks_file);
3264}
3265
3266static void option_cat_blob_fd(const char *fd)
3267{
3268 unsigned long n = ulong_arg("--cat-blob-fd", fd);
3269 if (n > (unsigned long) INT_MAX2147483647)
3270 die("--cat-blob-fd cannot exceed %d", INT_MAX2147483647);
3271 cat_blob_fd = (int) n;
3272}
3273
3274static void option_export_pack_edges(const char *edges)
3275{
3276 if (pack_edges)
3277 fclose(pack_edges);
3278 pack_edges = fopen(edges, "a");
3279 if (!pack_edges)
3280 die_errno("Cannot open '%s'", edges);
3281}
3282
3283static int parse_one_option(const char *option)
3284{
3285 if (skip_prefix(option, "max-pack-size=", &option)) {
3286 unsigned long v;
3287 if (!git_parse_ulong(option, &v))
3288 return 0;
3289 if (v < 8192) {
3290 warning("max-pack-size is now in bytes, assuming --max-pack-size=%lum", v);
3291 v *= 1024 * 1024;
3292 } else if (v < 1024 * 1024) {
3293 warning("minimum max-pack-size is 1 MiB");
3294 v = 1024 * 1024;
3295 }
3296 max_packsize = v;
3297 } else if (skip_prefix(option, "big-file-threshold=", &option)) {
3298 unsigned long v;
3299 if (!git_parse_ulong(option, &v))
3300 return 0;
3301 big_file_threshold = v;
3302 } else if (skip_prefix(option, "depth=", &option)) {
3303 option_depth(option);
3304 } else if (skip_prefix(option, "active-branches=", &option)) {
3305 option_active_branches(option);
3306 } else if (skip_prefix(option, "export-pack-edges=", &option)) {
3307 option_export_pack_edges(option);
3308 } else if (starts_with(option, "quiet")) {
3309 show_stats = 0;
3310 } else if (starts_with(option, "stats")) {
3311 show_stats = 1;
3312 } else {
3313 return 0;
3314 }
3315
3316 return 1;
3317}
3318
3319static int parse_one_feature(const char *feature, int from_stream)
3320{
3321 const char *arg;
3322
3323 if (skip_prefix(feature, "date-format=", &arg)) {
3324 option_date_format(arg);
3325 } else if (skip_prefix(feature, "import-marks=", &arg)) {
3326 option_import_marks(arg, from_stream, 0);
3327 } else if (skip_prefix(feature, "import-marks-if-exists=", &arg)) {
3328 option_import_marks(arg, from_stream, 1);
3329 } else if (skip_prefix(feature, "export-marks=", &arg)) {
3330 option_export_marks(arg);
3331 } else if (!strcmp(feature, "get-mark")) {
3332 ; /* Don't die - this feature is supported */
3333 } else if (!strcmp(feature, "cat-blob")) {
3334 ; /* Don't die - this feature is supported */
3335 } else if (!strcmp(feature, "relative-marks")) {
3336 relative_marks_paths = 1;
3337 } else if (!strcmp(feature, "no-relative-marks")) {
3338 relative_marks_paths = 0;
3339 } else if (!strcmp(feature, "done")) {
3340 require_explicit_termination = 1;
3341 } else if (!strcmp(feature, "force")) {
3342 force_update = 1;
3343 } else if (!strcmp(feature, "notes") || !strcmp(feature, "ls")) {
3344 ; /* do nothing; we have the feature */
3345 } else {
3346 return 0;
3347 }
3348
3349 return 1;
3350}
3351
3352static void parse_feature(const char *feature)
3353{
3354 if (seen_data_command)
3355 die("Got feature command '%s' after data command", feature);
3356
3357 if (parse_one_feature(feature, 1))
3358 return;
3359
3360 die("This version of fast-import does not support feature %s.", feature);
3361}
3362
3363static void parse_option(const char *option)
3364{
3365 if (seen_data_command)
3366 die("Got option command '%s' after data command", option);
3367
3368 if (parse_one_option(option))
3369 return;
3370
3371 die("This version of fast-import does not support option: %s", option);
3372}
3373
3374static void git_pack_config(void)
3375{
3376 int indexversion_value;
3377 int limit;
3378 unsigned long packsizelimit_value;
3379
3380 if (!git_config_get_ulong("pack.depth", &max_depth)) {
3381 if (max_depth > MAX_DEPTH((1<<13)-1))
3382 max_depth = MAX_DEPTH((1<<13)-1);
3383 }
3384 if (!git_config_get_int("pack.indexversion", &indexversion_value)) {
3385 pack_idx_opts.version = indexversion_value;
3386 if (pack_idx_opts.version > 2)
3387 git_die_config("pack.indexversion",
3388 "bad pack.indexversion=%"PRIu32"u", pack_idx_opts.version);
3389 }
3390 if (!git_config_get_ulong("pack.packsizelimit", &packsizelimit_value))
3391 max_packsize = packsizelimit_value;
3392
3393 if (!git_config_get_int("fastimport.unpacklimit", &limit))
3394 unpack_limit = limit;
3395 else if (!git_config_get_int("transfer.unpacklimit", &limit))
3396 unpack_limit = limit;
3397
3398 git_config(git_default_config, NULL((void*)0));
3399}
3400
3401static const char fast_import_usage[] =
3402"git fast-import [--date-format=<f>] [--max-pack-size=<n>] [--big-file-threshold=<n>] [--depth=<n>] [--active-branches=<n>] [--export-marks=<marks.file>]";
3403
3404static void parse_argv(void)
3405{
3406 unsigned int i;
3407
3408 for (i = 1; i < global_argc; i++) {
3409 const char *a = global_argv[i];
3410
3411 if (*a != '-' || !strcmp(a, "--"))
3412 break;
3413
3414 if (!skip_prefix(a, "--", &a))
3415 die("unknown option %s", a);
3416
3417 if (parse_one_option(a))
3418 continue;
3419
3420 if (parse_one_feature(a, 0))
3421 continue;
3422
3423 if (skip_prefix(a, "cat-blob-fd=", &a)) {
3424 option_cat_blob_fd(a);
3425 continue;
3426 }
3427
3428 die("unknown option --%s", a);
3429 }
3430 if (i != global_argc)
3431 usage(fast_import_usage);
3432
3433 seen_data_command = 1;
3434 if (import_marks_file)
3435 read_marks();
3436}
3437
3438int cmd_main(int argc, const char **argv)
3439{
3440 unsigned int i;
3441
3442 if (argc == 2 && !strcmp(argv[1], "-h"))
1
Assuming 'argc' is not equal to 2
→
3443 usage(fast_import_usage);
3444
3445 setup_git_directory();
3446 reset_pack_idx_option(&pack_idx_opts);
3447 git_pack_config();
3448
3449 alloc_objects(object_entry_alloc);
3450 strbuf_init(&command_buf, 0);
3451 atom_table = xcalloc(atom_table_sz, sizeof(struct atom_str*));
3452 branch_table = xcalloc(branch_table_sz, sizeof(struct branch*));
3453 avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*));
3454 marks = pool_calloc(1, sizeof(struct mark_set));
3455
3456 global_argc = argc;
3457 global_argv = argv;
3458
3459 rc_free = pool_alloc(cmd_save * sizeof(*rc_free));
3460 for (i = 0; i < (cmd_save - 1); i++)
2
←
Loop condition is false. Execution continues on line 3462
→
3461 rc_free[i].next = &rc_free[i + 1];
3462 rc_free[cmd_save - 1].next = NULL((void*)0);
3463
3464 prepare_packed_git();
3465 start_packfile();
3466 set_die_routine(die_nicely);
3467 set_checkpoint_signal();
3468 while (read_next_command() != EOF(-1)) {
3
←
Loop condition is true. Entering loop body
→
17
←
Loop condition is true. Entering loop body
→
31
←
Loop condition is true. Entering loop body
→
45
←
Loop condition is true. Entering loop body
→
3469 const char *v;
3470 if (!strcmp("blob", command_buf.buf))
4
←
Taking false branch
→
18
←
Taking false branch
→
32
←
Taking false branch
→
46
←
Taking false branch
→
3471 parse_new_blob();
3472 else if (skip_prefix(command_buf.buf, "ls ", &v))
5
←
Taking false branch
→
19
←
Taking false branch
→
33
←
Taking false branch
→
47
←
Taking false branch
→
3473 parse_ls(v, NULL((void*)0));
3474 else if (skip_prefix(command_buf.buf, "commit ", &v))
6
←
Taking false branch
→
20
←
Taking false branch
→
34
←
Taking false branch
→
48
←
Taking false branch
→
3475 parse_new_commit(v);
3476 else if (skip_prefix(command_buf.buf, "tag ", &v))
7
←
Taking false branch
→
21
←
Taking false branch
→
35
←
Taking false branch
→
49
←
Taking false branch
→
3477 parse_new_tag(v);
3478 else if (skip_prefix(command_buf.buf, "reset ", &v))
8
←
Taking false branch
→
22
←
Taking false branch
→
36
←
Taking false branch
→
50
←
Taking true branch
→
3479 parse_reset_branch(v);
51
←
Calling 'parse_reset_branch'
→
3480 else if (!strcmp("checkpoint", command_buf.buf))
9
←
Taking false branch
→
23
←
Taking false branch
→
37
←
Taking false branch
→
3481 parse_checkpoint();
3482 else if (!strcmp("done", command_buf.buf))
10
←
Taking false branch
→
24
←
Taking false branch
→
38
←
Taking false branch
→
3483 break;
3484 else if (starts_with(command_buf.buf, "progress "))
11
←
Taking false branch
→
25
←
Taking false branch
→
39
←
Taking false branch
→
3485 parse_progress();
3486 else if (skip_prefix(command_buf.buf, "feature ", &v))
12
←
Taking false branch
→
26
←
Taking false branch
→
40
←
Taking false branch
→
3487 parse_feature(v);
3488 else if (skip_prefix(command_buf.buf, "option git ", &v))
13
←
Taking false branch
→
27
←
Taking false branch
→
41
←
Taking false branch
→
3489 parse_option(v);
3490 else if (starts_with(command_buf.buf, "option "))
14
←
Taking true branch
→
28
←
Taking true branch
→
42
←
Taking true branch
→
3491 /* ignore non-git options*/;
3492 else
3493 die("Unsupported command: %s", command_buf.buf);
3494
3495 if (checkpoint_requested)
15
←
Assuming 'checkpoint_requested' is 0
→
16
←
Taking false branch
→
29
←
Assuming 'checkpoint_requested' is 0
→
30
←
Taking false branch
→
43
←
Assuming 'checkpoint_requested' is 0
→
44
←
Taking false branch
→
3496 checkpoint();
3497 }
3498
3499 /* argv hasn't been parsed yet, do so */
3500 if (!seen_data_command)
3501 parse_argv();
3502
3503 if (require_explicit_termination && feof(stdin__stdinp))
3504 die("stream ends early");
3505
3506 end_packfile();
3507
3508 dump_branches();
3509 dump_tags();
3510 unkeep_all_packs();
3511 dump_marks();
3512
3513 if (pack_edges)
3514 fclose(pack_edges);
3515
3516 if (show_stats) {
3517 uintmax_t total_count = 0, duplicate_count = 0;
3518 for (i = 0; i < ARRAY_SIZE(object_count_by_type)(sizeof(object_count_by_type) / sizeof((object_count_by_type)
[0]) + (sizeof(char [1 - 2*!(!__builtin_types_compatible_p(__typeof__
(object_count_by_type), __typeof__(&(object_count_by_type
)[0])))]) - 1)); i++)
3519 total_count += object_count_by_type[i];
3520 for (i = 0; i < ARRAY_SIZE(duplicate_count_by_type)(sizeof(duplicate_count_by_type) / sizeof((duplicate_count_by_type
)[0]) + (sizeof(char [1 - 2*!(!__builtin_types_compatible_p(__typeof__
(duplicate_count_by_type), __typeof__(&(duplicate_count_by_type
)[0])))]) - 1)); i++)
3521 duplicate_count += duplicate_count_by_type[i];
3522
3523 fprintf(stderr__stderrp, "%s statistics:\n", argv[0]);
3524 fprintf(stderr__stderrp, "---------------------------------------------------------------------\n");
3525 fprintf(stderr__stderrp, "Alloc'd objects: %10" PRIuMAX"j" "u" "\n", alloc_count);
3526 fprintf(stderr__stderrp, "Total objects: %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " duplicates )\n", total_count, duplicate_count);
3527 fprintf(stderr__stderrp, " blobs : %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " duplicates %10" PRIuMAX"j" "u" " deltas of %10" PRIuMAX"j" "u"" attempts)\n", object_count_by_type[OBJ_BLOB], duplicate_count_by_type[OBJ_BLOB], delta_count_by_type[OBJ_BLOB], delta_count_attempts_by_type[OBJ_BLOB]);
3528 fprintf(stderr__stderrp, " trees : %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " duplicates %10" PRIuMAX"j" "u" " deltas of %10" PRIuMAX"j" "u"" attempts)\n", object_count_by_type[OBJ_TREE], duplicate_count_by_type[OBJ_TREE], delta_count_by_type[OBJ_TREE], delta_count_attempts_by_type[OBJ_TREE]);
3529 fprintf(stderr__stderrp, " commits: %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " duplicates %10" PRIuMAX"j" "u" " deltas of %10" PRIuMAX"j" "u"" attempts)\n", object_count_by_type[OBJ_COMMIT], duplicate_count_by_type[OBJ_COMMIT], delta_count_by_type[OBJ_COMMIT], delta_count_attempts_by_type[OBJ_COMMIT]);
3530 fprintf(stderr__stderrp, " tags : %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " duplicates %10" PRIuMAX"j" "u" " deltas of %10" PRIuMAX"j" "u"" attempts)\n", object_count_by_type[OBJ_TAG], duplicate_count_by_type[OBJ_TAG], delta_count_by_type[OBJ_TAG], delta_count_attempts_by_type[OBJ_TAG]);
3531 fprintf(stderr__stderrp, "Total branches: %10lu (%10lu loads )\n", branch_count, branch_load_count);
3532 fprintf(stderr__stderrp, " marks: %10" PRIuMAX"j" "u" " (%10" PRIuMAX"j" "u" " unique )\n", (((uintmax_t)1) << marks->shift) * 1024, marks_set_count);
3533 fprintf(stderr__stderrp, " atoms: %10u\n", atom_cnt);
3534 fprintf(stderr__stderrp, "Memory total: %10" PRIuMAX"j" "u" " KiB\n", (total_allocd + alloc_count*sizeof(struct object_entry))/1024);
3535 fprintf(stderr__stderrp, " pools: %10lu KiB\n", (unsigned long)(total_allocd/1024));
3536 fprintf(stderr__stderrp, " objects: %10" PRIuMAX"j" "u" " KiB\n", (alloc_count*sizeof(struct object_entry))/1024);
3537 fprintf(stderr__stderrp, "---------------------------------------------------------------------\n");
3538 pack_report();
3539 fprintf(stderr__stderrp, "---------------------------------------------------------------------\n");
3540 fprintf(stderr__stderrp, "\n");
3541 }
3542
3543 return failure ? 1 : 0;
3544}