Code

engine.pl: Fix a recent breakage of the buildsystem generator
[git.git] / fast-import.c
1 /*
2 (See Documentation/git-fast-import.txt for maintained documentation.)
3 Format of STDIN stream:
5   stream ::= cmd*;
7   cmd ::= new_blob
8         | new_commit
9         | new_tag
10         | reset_branch
11         | checkpoint
12         | progress
13         ;
15   new_blob ::= 'blob' lf
16     mark?
17     file_content;
18   file_content ::= data;
20   new_commit ::= 'commit' sp ref_str lf
21     mark?
22     ('author' (sp name)? sp '<' email '>' sp when lf)?
23     'committer' (sp name)? sp '<' email '>' sp when lf
24     commit_msg
25     ('from' sp committish lf)?
26     ('merge' sp committish lf)*
27     file_change*
28     lf?;
29   commit_msg ::= data;
31   file_change ::= file_clr
32     | file_del
33     | file_rnm
34     | file_cpy
35     | file_obm
36     | file_inm;
37   file_clr ::= 'deleteall' lf;
38   file_del ::= 'D' sp path_str lf;
39   file_rnm ::= 'R' sp path_str sp path_str lf;
40   file_cpy ::= 'C' sp path_str sp path_str lf;
41   file_obm ::= 'M' sp mode sp (hexsha1 | idnum) sp path_str lf;
42   file_inm ::= 'M' sp mode sp 'inline' sp path_str lf
43     data;
44   note_obm ::= 'N' sp (hexsha1 | idnum) sp committish lf;
45   note_inm ::= 'N' sp 'inline' sp committish lf
46     data;
48   new_tag ::= 'tag' sp tag_str lf
49     'from' sp committish lf
50     ('tagger' (sp name)? sp '<' email '>' sp when lf)?
51     tag_msg;
52   tag_msg ::= data;
54   reset_branch ::= 'reset' sp ref_str lf
55     ('from' sp committish lf)?
56     lf?;
58   checkpoint ::= 'checkpoint' lf
59     lf?;
61   progress ::= 'progress' sp not_lf* lf
62     lf?;
64      # note: the first idnum in a stream should be 1 and subsequent
65      # idnums should not have gaps between values as this will cause
66      # the stream parser to reserve space for the gapped values.  An
67      # idnum can be updated in the future to a new object by issuing
68      # a new mark directive with the old idnum.
69      #
70   mark ::= 'mark' sp idnum lf;
71   data ::= (delimited_data | exact_data)
72     lf?;
74     # note: delim may be any string but must not contain lf.
75     # data_line may contain any data but must not be exactly
76     # delim.
77   delimited_data ::= 'data' sp '<<' delim lf
78     (data_line lf)*
79     delim lf;
81      # note: declen indicates the length of binary_data in bytes.
82      # declen does not include the lf preceding the binary data.
83      #
84   exact_data ::= 'data' sp declen lf
85     binary_data;
87      # note: quoted strings are C-style quoting supporting \c for
88      # common escapes of 'c' (e..g \n, \t, \\, \") or \nnn where nnn
89      # is the signed byte value in octal.  Note that the only
90      # characters which must actually be escaped to protect the
91      # stream formatting is: \, " and LF.  Otherwise these values
92      # are UTF8.
93      #
94   committish  ::= (ref_str | hexsha1 | sha1exp_str | idnum);
95   ref_str     ::= ref;
96   sha1exp_str ::= sha1exp;
97   tag_str     ::= tag;
98   path_str    ::= path    | '"' quoted(path)    '"' ;
99   mode        ::= '100644' | '644'
100                 | '100755' | '755'
101                 | '120000'
102                 ;
104   declen ::= # unsigned 32 bit value, ascii base10 notation;
105   bigint ::= # unsigned integer value, ascii base10 notation;
106   binary_data ::= # file content, not interpreted;
108   when         ::= raw_when | rfc2822_when;
109   raw_when     ::= ts sp tz;
110   rfc2822_when ::= # Valid RFC 2822 date and time;
112   sp ::= # ASCII space character;
113   lf ::= # ASCII newline (LF) character;
115      # note: a colon (':') must precede the numerical value assigned to
116      # an idnum.  This is to distinguish it from a ref or tag name as
117      # GIT does not permit ':' in ref or tag strings.
118      #
119   idnum   ::= ':' bigint;
120   path    ::= # GIT style file path, e.g. "a/b/c";
121   ref     ::= # GIT ref name, e.g. "refs/heads/MOZ_GECKO_EXPERIMENT";
122   tag     ::= # GIT tag name, e.g. "FIREFOX_1_5";
123   sha1exp ::= # Any valid GIT SHA1 expression;
124   hexsha1 ::= # SHA1 in hexadecimal format;
126      # note: name and email are UTF8 strings, however name must not
127      # contain '<' or lf and email must not contain any of the
128      # following: '<', '>', lf.
129      #
130   name  ::= # valid GIT author/committer name;
131   email ::= # valid GIT author/committer email;
132   ts    ::= # time since the epoch in seconds, ascii base10 notation;
133   tz    ::= # GIT style timezone;
135      # note: comments may appear anywhere in the input, except
136      # within a data command.  Any form of the data command
137      # always escapes the related input from comment processing.
138      #
139      # In case it is not clear, the '#' that starts the comment
140      # must be the first character on that line (an lf
141      # preceded it).
142      #
143   comment ::= '#' not_lf* lf;
144   not_lf  ::= # Any byte that is not ASCII newline (LF);
145 */
147 #include "builtin.h"
148 #include "cache.h"
149 #include "object.h"
150 #include "blob.h"
151 #include "tree.h"
152 #include "commit.h"
153 #include "delta.h"
154 #include "pack.h"
155 #include "refs.h"
156 #include "csum-file.h"
157 #include "quote.h"
158 #include "exec_cmd.h"
160 #define PACK_ID_BITS 16
161 #define MAX_PACK_ID ((1<<PACK_ID_BITS)-1)
162 #define DEPTH_BITS 13
163 #define MAX_DEPTH ((1<<DEPTH_BITS)-1)
165 struct object_entry
167         struct object_entry *next;
168         uint32_t offset;
169         uint32_t type : TYPE_BITS,
170                 pack_id : PACK_ID_BITS,
171                 depth : DEPTH_BITS;
172         unsigned char sha1[20];
173 };
175 struct object_entry_pool
177         struct object_entry_pool *next_pool;
178         struct object_entry *next_free;
179         struct object_entry *end;
180         struct object_entry entries[FLEX_ARRAY]; /* more */
181 };
183 struct mark_set
185         union {
186                 struct object_entry *marked[1024];
187                 struct mark_set *sets[1024];
188         } data;
189         unsigned int shift;
190 };
192 struct last_object
194         struct strbuf data;
195         uint32_t offset;
196         unsigned int depth;
197         unsigned no_swap : 1;
198 };
200 struct mem_pool
202         struct mem_pool *next_pool;
203         char *next_free;
204         char *end;
205         uintmax_t space[FLEX_ARRAY]; /* more */
206 };
208 struct atom_str
210         struct atom_str *next_atom;
211         unsigned short str_len;
212         char str_dat[FLEX_ARRAY]; /* more */
213 };
215 struct tree_content;
216 struct tree_entry
218         struct tree_content *tree;
219         struct atom_str *name;
220         struct tree_entry_ms
221         {
222                 uint16_t mode;
223                 unsigned char sha1[20];
224         } versions[2];
225 };
227 struct tree_content
229         unsigned int entry_capacity; /* must match avail_tree_content */
230         unsigned int entry_count;
231         unsigned int delta_depth;
232         struct tree_entry *entries[FLEX_ARRAY]; /* more */
233 };
235 struct avail_tree_content
237         unsigned int entry_capacity; /* must match tree_content */
238         struct avail_tree_content *next_avail;
239 };
241 struct branch
243         struct branch *table_next_branch;
244         struct branch *active_next_branch;
245         const char *name;
246         struct tree_entry branch_tree;
247         uintmax_t last_commit;
248         uintmax_t num_notes;
249         unsigned active : 1;
250         unsigned pack_id : PACK_ID_BITS;
251         unsigned char sha1[20];
252 };
254 struct tag
256         struct tag *next_tag;
257         const char *name;
258         unsigned int pack_id;
259         unsigned char sha1[20];
260 };
262 struct hash_list
264         struct hash_list *next;
265         unsigned char sha1[20];
266 };
268 typedef enum {
269         WHENSPEC_RAW = 1,
270         WHENSPEC_RFC2822,
271         WHENSPEC_NOW,
272 } whenspec_type;
274 struct recent_command
276         struct recent_command *prev;
277         struct recent_command *next;
278         char *buf;
279 };
281 /* Configured limits on output */
282 static unsigned long max_depth = 10;
283 static off_t max_packsize = (1LL << 32) - 1;
284 static int force_update;
285 static int pack_compression_level = Z_DEFAULT_COMPRESSION;
286 static int pack_compression_seen;
288 /* Stats and misc. counters */
289 static uintmax_t alloc_count;
290 static uintmax_t marks_set_count;
291 static uintmax_t object_count_by_type[1 << TYPE_BITS];
292 static uintmax_t duplicate_count_by_type[1 << TYPE_BITS];
293 static uintmax_t delta_count_by_type[1 << TYPE_BITS];
294 static unsigned long object_count;
295 static unsigned long branch_count;
296 static unsigned long branch_load_count;
297 static int failure;
298 static FILE *pack_edges;
299 static unsigned int show_stats = 1;
300 static int global_argc;
301 static const char **global_argv;
303 /* Memory pools */
304 static size_t mem_pool_alloc = 2*1024*1024 - sizeof(struct mem_pool);
305 static size_t total_allocd;
306 static struct mem_pool *mem_pool;
308 /* Atom management */
309 static unsigned int atom_table_sz = 4451;
310 static unsigned int atom_cnt;
311 static struct atom_str **atom_table;
313 /* The .pack file being generated */
314 static unsigned int pack_id;
315 static struct packed_git *pack_data;
316 static struct packed_git **all_packs;
317 static unsigned long pack_size;
319 /* Table of objects we've written. */
320 static unsigned int object_entry_alloc = 5000;
321 static struct object_entry_pool *blocks;
322 static struct object_entry *object_table[1 << 16];
323 static struct mark_set *marks;
324 static const char *export_marks_file;
325 static const char *import_marks_file;
326 static int import_marks_file_from_stream;
327 static int relative_marks_paths;
329 /* Our last blob */
330 static struct last_object last_blob = { STRBUF_INIT, 0, 0, 0 };
332 /* Tree management */
333 static unsigned int tree_entry_alloc = 1000;
334 static void *avail_tree_entry;
335 static unsigned int avail_tree_table_sz = 100;
336 static struct avail_tree_content **avail_tree_table;
337 static struct strbuf old_tree = STRBUF_INIT;
338 static struct strbuf new_tree = STRBUF_INIT;
340 /* Branch data */
341 static unsigned long max_active_branches = 5;
342 static unsigned long cur_active_branches;
343 static unsigned long branch_table_sz = 1039;
344 static struct branch **branch_table;
345 static struct branch *active_branches;
347 /* Tag data */
348 static struct tag *first_tag;
349 static struct tag *last_tag;
351 /* Input stream parsing */
352 static whenspec_type whenspec = WHENSPEC_RAW;
353 static struct strbuf command_buf = STRBUF_INIT;
354 static int unread_command_buf;
355 static struct recent_command cmd_hist = {&cmd_hist, &cmd_hist, NULL};
356 static struct recent_command *cmd_tail = &cmd_hist;
357 static struct recent_command *rc_free;
358 static unsigned int cmd_save = 100;
359 static uintmax_t next_mark;
360 static struct strbuf new_data = STRBUF_INIT;
361 static int seen_data_command;
363 static void parse_argv(void);
365 static void write_branch_report(FILE *rpt, struct branch *b)
367         fprintf(rpt, "%s:\n", b->name);
369         fprintf(rpt, "  status      :");
370         if (b->active)
371                 fputs(" active", rpt);
372         if (b->branch_tree.tree)
373                 fputs(" loaded", rpt);
374         if (is_null_sha1(b->branch_tree.versions[1].sha1))
375                 fputs(" dirty", rpt);
376         fputc('\n', rpt);
378         fprintf(rpt, "  tip commit  : %s\n", sha1_to_hex(b->sha1));
379         fprintf(rpt, "  old tree    : %s\n", sha1_to_hex(b->branch_tree.versions[0].sha1));
380         fprintf(rpt, "  cur tree    : %s\n", sha1_to_hex(b->branch_tree.versions[1].sha1));
381         fprintf(rpt, "  commit clock: %" PRIuMAX "\n", b->last_commit);
383         fputs("  last pack   : ", rpt);
384         if (b->pack_id < MAX_PACK_ID)
385                 fprintf(rpt, "%u", b->pack_id);
386         fputc('\n', rpt);
388         fputc('\n', rpt);
391 static void dump_marks_helper(FILE *, uintmax_t, struct mark_set *);
393 static void write_crash_report(const char *err)
395         char *loc = git_path("fast_import_crash_%"PRIuMAX, (uintmax_t) getpid());
396         FILE *rpt = fopen(loc, "w");
397         struct branch *b;
398         unsigned long lu;
399         struct recent_command *rc;
401         if (!rpt) {
402                 error("can't write crash report %s: %s", loc, strerror(errno));
403                 return;
404         }
406         fprintf(stderr, "fast-import: dumping crash report to %s\n", loc);
408         fprintf(rpt, "fast-import crash report:\n");
409         fprintf(rpt, "    fast-import process: %"PRIuMAX"\n", (uintmax_t) getpid());
410         fprintf(rpt, "    parent process     : %"PRIuMAX"\n", (uintmax_t) getppid());
411         fprintf(rpt, "    at %s\n", show_date(time(NULL), 0, DATE_LOCAL));
412         fputc('\n', rpt);
414         fputs("fatal: ", rpt);
415         fputs(err, rpt);
416         fputc('\n', rpt);
418         fputc('\n', rpt);
419         fputs("Most Recent Commands Before Crash\n", rpt);
420         fputs("---------------------------------\n", rpt);
421         for (rc = cmd_hist.next; rc != &cmd_hist; rc = rc->next) {
422                 if (rc->next == &cmd_hist)
423                         fputs("* ", rpt);
424                 else
425                         fputs("  ", rpt);
426                 fputs(rc->buf, rpt);
427                 fputc('\n', rpt);
428         }
430         fputc('\n', rpt);
431         fputs("Active Branch LRU\n", rpt);
432         fputs("-----------------\n", rpt);
433         fprintf(rpt, "    active_branches = %lu cur, %lu max\n",
434                 cur_active_branches,
435                 max_active_branches);
436         fputc('\n', rpt);
437         fputs("  pos  clock name\n", rpt);
438         fputs("  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n", rpt);
439         for (b = active_branches, lu = 0; b; b = b->active_next_branch)
440                 fprintf(rpt, "  %2lu) %6" PRIuMAX" %s\n",
441                         ++lu, b->last_commit, b->name);
443         fputc('\n', rpt);
444         fputs("Inactive Branches\n", rpt);
445         fputs("-----------------\n", rpt);
446         for (lu = 0; lu < branch_table_sz; lu++) {
447                 for (b = branch_table[lu]; b; b = b->table_next_branch)
448                         write_branch_report(rpt, b);
449         }
451         if (first_tag) {
452                 struct tag *tg;
453                 fputc('\n', rpt);
454                 fputs("Annotated Tags\n", rpt);
455                 fputs("--------------\n", rpt);
456                 for (tg = first_tag; tg; tg = tg->next_tag) {
457                         fputs(sha1_to_hex(tg->sha1), rpt);
458                         fputc(' ', rpt);
459                         fputs(tg->name, rpt);
460                         fputc('\n', rpt);
461                 }
462         }
464         fputc('\n', rpt);
465         fputs("Marks\n", rpt);
466         fputs("-----\n", rpt);
467         if (export_marks_file)
468                 fprintf(rpt, "  exported to %s\n", export_marks_file);
469         else
470                 dump_marks_helper(rpt, 0, marks);
472         fputc('\n', rpt);
473         fputs("-------------------\n", rpt);
474         fputs("END OF CRASH REPORT\n", rpt);
475         fclose(rpt);
478 static void end_packfile(void);
479 static void unkeep_all_packs(void);
480 static void dump_marks(void);
482 static NORETURN void die_nicely(const char *err, va_list params)
484         static int zombie;
485         char message[2 * PATH_MAX];
487         vsnprintf(message, sizeof(message), err, params);
488         fputs("fatal: ", stderr);
489         fputs(message, stderr);
490         fputc('\n', stderr);
492         if (!zombie) {
493                 zombie = 1;
494                 write_crash_report(message);
495                 end_packfile();
496                 unkeep_all_packs();
497                 dump_marks();
498         }
499         exit(128);
502 static void alloc_objects(unsigned int cnt)
504         struct object_entry_pool *b;
506         b = xmalloc(sizeof(struct object_entry_pool)
507                 + cnt * sizeof(struct object_entry));
508         b->next_pool = blocks;
509         b->next_free = b->entries;
510         b->end = b->entries + cnt;
511         blocks = b;
512         alloc_count += cnt;
515 static struct object_entry *new_object(unsigned char *sha1)
517         struct object_entry *e;
519         if (blocks->next_free == blocks->end)
520                 alloc_objects(object_entry_alloc);
522         e = blocks->next_free++;
523         hashcpy(e->sha1, sha1);
524         return e;
527 static struct object_entry *find_object(unsigned char *sha1)
529         unsigned int h = sha1[0] << 8 | sha1[1];
530         struct object_entry *e;
531         for (e = object_table[h]; e; e = e->next)
532                 if (!hashcmp(sha1, e->sha1))
533                         return e;
534         return NULL;
537 static struct object_entry *insert_object(unsigned char *sha1)
539         unsigned int h = sha1[0] << 8 | sha1[1];
540         struct object_entry *e = object_table[h];
541         struct object_entry *p = NULL;
543         while (e) {
544                 if (!hashcmp(sha1, e->sha1))
545                         return e;
546                 p = e;
547                 e = e->next;
548         }
550         e = new_object(sha1);
551         e->next = NULL;
552         e->offset = 0;
553         if (p)
554                 p->next = e;
555         else
556                 object_table[h] = e;
557         return e;
560 static unsigned int hc_str(const char *s, size_t len)
562         unsigned int r = 0;
563         while (len-- > 0)
564                 r = r * 31 + *s++;
565         return r;
568 static void *pool_alloc(size_t len)
570         struct mem_pool *p;
571         void *r;
573         /* round up to a 'uintmax_t' alignment */
574         if (len & (sizeof(uintmax_t) - 1))
575                 len += sizeof(uintmax_t) - (len & (sizeof(uintmax_t) - 1));
577         for (p = mem_pool; p; p = p->next_pool)
578                 if ((p->end - p->next_free >= len))
579                         break;
581         if (!p) {
582                 if (len >= (mem_pool_alloc/2)) {
583                         total_allocd += len;
584                         return xmalloc(len);
585                 }
586                 total_allocd += sizeof(struct mem_pool) + mem_pool_alloc;
587                 p = xmalloc(sizeof(struct mem_pool) + mem_pool_alloc);
588                 p->next_pool = mem_pool;
589                 p->next_free = (char *) p->space;
590                 p->end = p->next_free + mem_pool_alloc;
591                 mem_pool = p;
592         }
594         r = p->next_free;
595         p->next_free += len;
596         return r;
599 static void *pool_calloc(size_t count, size_t size)
601         size_t len = count * size;
602         void *r = pool_alloc(len);
603         memset(r, 0, len);
604         return r;
607 static char *pool_strdup(const char *s)
609         char *r = pool_alloc(strlen(s) + 1);
610         strcpy(r, s);
611         return r;
614 static void insert_mark(uintmax_t idnum, struct object_entry *oe)
616         struct mark_set *s = marks;
617         while ((idnum >> s->shift) >= 1024) {
618                 s = pool_calloc(1, sizeof(struct mark_set));
619                 s->shift = marks->shift + 10;
620                 s->data.sets[0] = marks;
621                 marks = s;
622         }
623         while (s->shift) {
624                 uintmax_t i = idnum >> s->shift;
625                 idnum -= i << s->shift;
626                 if (!s->data.sets[i]) {
627                         s->data.sets[i] = pool_calloc(1, sizeof(struct mark_set));
628                         s->data.sets[i]->shift = s->shift - 10;
629                 }
630                 s = s->data.sets[i];
631         }
632         if (!s->data.marked[idnum])
633                 marks_set_count++;
634         s->data.marked[idnum] = oe;
637 static struct object_entry *find_mark(uintmax_t idnum)
639         uintmax_t orig_idnum = idnum;
640         struct mark_set *s = marks;
641         struct object_entry *oe = NULL;
642         if ((idnum >> s->shift) < 1024) {
643                 while (s && s->shift) {
644                         uintmax_t i = idnum >> s->shift;
645                         idnum -= i << s->shift;
646                         s = s->data.sets[i];
647                 }
648                 if (s)
649                         oe = s->data.marked[idnum];
650         }
651         if (!oe)
652                 die("mark :%" PRIuMAX " not declared", orig_idnum);
653         return oe;
656 static struct atom_str *to_atom(const char *s, unsigned short len)
658         unsigned int hc = hc_str(s, len) % atom_table_sz;
659         struct atom_str *c;
661         for (c = atom_table[hc]; c; c = c->next_atom)
662                 if (c->str_len == len && !strncmp(s, c->str_dat, len))
663                         return c;
665         c = pool_alloc(sizeof(struct atom_str) + len + 1);
666         c->str_len = len;
667         strncpy(c->str_dat, s, len);
668         c->str_dat[len] = 0;
669         c->next_atom = atom_table[hc];
670         atom_table[hc] = c;
671         atom_cnt++;
672         return c;
675 static struct branch *lookup_branch(const char *name)
677         unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz;
678         struct branch *b;
680         for (b = branch_table[hc]; b; b = b->table_next_branch)
681                 if (!strcmp(name, b->name))
682                         return b;
683         return NULL;
686 static struct branch *new_branch(const char *name)
688         unsigned int hc = hc_str(name, strlen(name)) % branch_table_sz;
689         struct branch *b = lookup_branch(name);
691         if (b)
692                 die("Invalid attempt to create duplicate branch: %s", name);
693         switch (check_ref_format(name)) {
694         case 0: break; /* its valid */
695         case CHECK_REF_FORMAT_ONELEVEL:
696                 break; /* valid, but too few '/', allow anyway */
697         default:
698                 die("Branch name doesn't conform to GIT standards: %s", name);
699         }
701         b = pool_calloc(1, sizeof(struct branch));
702         b->name = pool_strdup(name);
703         b->table_next_branch = branch_table[hc];
704         b->branch_tree.versions[0].mode = S_IFDIR;
705         b->branch_tree.versions[1].mode = S_IFDIR;
706         b->num_notes = 0;
707         b->active = 0;
708         b->pack_id = MAX_PACK_ID;
709         branch_table[hc] = b;
710         branch_count++;
711         return b;
714 static unsigned int hc_entries(unsigned int cnt)
716         cnt = cnt & 7 ? (cnt / 8) + 1 : cnt / 8;
717         return cnt < avail_tree_table_sz ? cnt : avail_tree_table_sz - 1;
720 static struct tree_content *new_tree_content(unsigned int cnt)
722         struct avail_tree_content *f, *l = NULL;
723         struct tree_content *t;
724         unsigned int hc = hc_entries(cnt);
726         for (f = avail_tree_table[hc]; f; l = f, f = f->next_avail)
727                 if (f->entry_capacity >= cnt)
728                         break;
730         if (f) {
731                 if (l)
732                         l->next_avail = f->next_avail;
733                 else
734                         avail_tree_table[hc] = f->next_avail;
735         } else {
736                 cnt = cnt & 7 ? ((cnt / 8) + 1) * 8 : cnt;
737                 f = pool_alloc(sizeof(*t) + sizeof(t->entries[0]) * cnt);
738                 f->entry_capacity = cnt;
739         }
741         t = (struct tree_content*)f;
742         t->entry_count = 0;
743         t->delta_depth = 0;
744         return t;
747 static void release_tree_entry(struct tree_entry *e);
748 static void release_tree_content(struct tree_content *t)
750         struct avail_tree_content *f = (struct avail_tree_content*)t;
751         unsigned int hc = hc_entries(f->entry_capacity);
752         f->next_avail = avail_tree_table[hc];
753         avail_tree_table[hc] = f;
756 static void release_tree_content_recursive(struct tree_content *t)
758         unsigned int i;
759         for (i = 0; i < t->entry_count; i++)
760                 release_tree_entry(t->entries[i]);
761         release_tree_content(t);
764 static struct tree_content *grow_tree_content(
765         struct tree_content *t,
766         int amt)
768         struct tree_content *r = new_tree_content(t->entry_count + amt);
769         r->entry_count = t->entry_count;
770         r->delta_depth = t->delta_depth;
771         memcpy(r->entries,t->entries,t->entry_count*sizeof(t->entries[0]));
772         release_tree_content(t);
773         return r;
776 static struct tree_entry *new_tree_entry(void)
778         struct tree_entry *e;
780         if (!avail_tree_entry) {
781                 unsigned int n = tree_entry_alloc;
782                 total_allocd += n * sizeof(struct tree_entry);
783                 avail_tree_entry = e = xmalloc(n * sizeof(struct tree_entry));
784                 while (n-- > 1) {
785                         *((void**)e) = e + 1;
786                         e++;
787                 }
788                 *((void**)e) = NULL;
789         }
791         e = avail_tree_entry;
792         avail_tree_entry = *((void**)e);
793         return e;
796 static void release_tree_entry(struct tree_entry *e)
798         if (e->tree)
799                 release_tree_content_recursive(e->tree);
800         *((void**)e) = avail_tree_entry;
801         avail_tree_entry = e;
804 static struct tree_content *dup_tree_content(struct tree_content *s)
806         struct tree_content *d;
807         struct tree_entry *a, *b;
808         unsigned int i;
810         if (!s)
811                 return NULL;
812         d = new_tree_content(s->entry_count);
813         for (i = 0; i < s->entry_count; i++) {
814                 a = s->entries[i];
815                 b = new_tree_entry();
816                 memcpy(b, a, sizeof(*a));
817                 if (a->tree && is_null_sha1(b->versions[1].sha1))
818                         b->tree = dup_tree_content(a->tree);
819                 else
820                         b->tree = NULL;
821                 d->entries[i] = b;
822         }
823         d->entry_count = s->entry_count;
824         d->delta_depth = s->delta_depth;
826         return d;
829 static void start_packfile(void)
831         static char tmpfile[PATH_MAX];
832         struct packed_git *p;
833         struct pack_header hdr;
834         int pack_fd;
836         pack_fd = odb_mkstemp(tmpfile, sizeof(tmpfile),
837                               "pack/tmp_pack_XXXXXX");
838         p = xcalloc(1, sizeof(*p) + strlen(tmpfile) + 2);
839         strcpy(p->pack_name, tmpfile);
840         p->pack_fd = pack_fd;
842         hdr.hdr_signature = htonl(PACK_SIGNATURE);
843         hdr.hdr_version = htonl(2);
844         hdr.hdr_entries = 0;
845         write_or_die(p->pack_fd, &hdr, sizeof(hdr));
847         pack_data = p;
848         pack_size = sizeof(hdr);
849         object_count = 0;
851         all_packs = xrealloc(all_packs, sizeof(*all_packs) * (pack_id + 1));
852         all_packs[pack_id] = p;
855 static int oecmp (const void *a_, const void *b_)
857         struct object_entry *a = *((struct object_entry**)a_);
858         struct object_entry *b = *((struct object_entry**)b_);
859         return hashcmp(a->sha1, b->sha1);
862 static char *create_index(void)
864         static char tmpfile[PATH_MAX];
865         git_SHA_CTX ctx;
866         struct sha1file *f;
867         struct object_entry **idx, **c, **last, *e;
868         struct object_entry_pool *o;
869         uint32_t array[256];
870         int i, idx_fd;
872         /* Build the sorted table of object IDs. */
873         idx = xmalloc(object_count * sizeof(struct object_entry*));
874         c = idx;
875         for (o = blocks; o; o = o->next_pool)
876                 for (e = o->next_free; e-- != o->entries;)
877                         if (pack_id == e->pack_id)
878                                 *c++ = e;
879         last = idx + object_count;
880         if (c != last)
881                 die("internal consistency error creating the index");
882         qsort(idx, object_count, sizeof(struct object_entry*), oecmp);
884         /* Generate the fan-out array. */
885         c = idx;
886         for (i = 0; i < 256; i++) {
887                 struct object_entry **next = c;
888                 while (next < last) {
889                         if ((*next)->sha1[0] != i)
890                                 break;
891                         next++;
892                 }
893                 array[i] = htonl(next - idx);
894                 c = next;
895         }
897         idx_fd = odb_mkstemp(tmpfile, sizeof(tmpfile),
898                              "pack/tmp_idx_XXXXXX");
899         f = sha1fd(idx_fd, tmpfile);
900         sha1write(f, array, 256 * sizeof(int));
901         git_SHA1_Init(&ctx);
902         for (c = idx; c != last; c++) {
903                 uint32_t offset = htonl((*c)->offset);
904                 sha1write(f, &offset, 4);
905                 sha1write(f, (*c)->sha1, sizeof((*c)->sha1));
906                 git_SHA1_Update(&ctx, (*c)->sha1, 20);
907         }
908         sha1write(f, pack_data->sha1, sizeof(pack_data->sha1));
909         sha1close(f, NULL, CSUM_FSYNC);
910         free(idx);
911         git_SHA1_Final(pack_data->sha1, &ctx);
912         return tmpfile;
915 static char *keep_pack(char *curr_index_name)
917         static char name[PATH_MAX];
918         static const char *keep_msg = "fast-import";
919         int keep_fd;
921         keep_fd = odb_pack_keep(name, sizeof(name), pack_data->sha1);
922         if (keep_fd < 0)
923                 die_errno("cannot create keep file");
924         write_or_die(keep_fd, keep_msg, strlen(keep_msg));
925         if (close(keep_fd))
926                 die_errno("failed to write keep file");
928         snprintf(name, sizeof(name), "%s/pack/pack-%s.pack",
929                  get_object_directory(), sha1_to_hex(pack_data->sha1));
930         if (move_temp_to_file(pack_data->pack_name, name))
931                 die("cannot store pack file");
933         snprintf(name, sizeof(name), "%s/pack/pack-%s.idx",
934                  get_object_directory(), sha1_to_hex(pack_data->sha1));
935         if (move_temp_to_file(curr_index_name, name))
936                 die("cannot store index file");
937         return name;
940 static void unkeep_all_packs(void)
942         static char name[PATH_MAX];
943         int k;
945         for (k = 0; k < pack_id; k++) {
946                 struct packed_git *p = all_packs[k];
947                 snprintf(name, sizeof(name), "%s/pack/pack-%s.keep",
948                          get_object_directory(), sha1_to_hex(p->sha1));
949                 unlink_or_warn(name);
950         }
953 static void end_packfile(void)
955         struct packed_git *old_p = pack_data, *new_p;
957         clear_delta_base_cache();
958         if (object_count) {
959                 char *idx_name;
960                 int i;
961                 struct branch *b;
962                 struct tag *t;
964                 close_pack_windows(pack_data);
965                 fixup_pack_header_footer(pack_data->pack_fd, pack_data->sha1,
966                                     pack_data->pack_name, object_count,
967                                     NULL, 0);
968                 close(pack_data->pack_fd);
969                 idx_name = keep_pack(create_index());
971                 /* Register the packfile with core git's machinery. */
972                 new_p = add_packed_git(idx_name, strlen(idx_name), 1);
973                 if (!new_p)
974                         die("core git rejected index %s", idx_name);
975                 all_packs[pack_id] = new_p;
976                 install_packed_git(new_p);
978                 /* Print the boundary */
979                 if (pack_edges) {
980                         fprintf(pack_edges, "%s:", new_p->pack_name);
981                         for (i = 0; i < branch_table_sz; i++) {
982                                 for (b = branch_table[i]; b; b = b->table_next_branch) {
983                                         if (b->pack_id == pack_id)
984                                                 fprintf(pack_edges, " %s", sha1_to_hex(b->sha1));
985                                 }
986                         }
987                         for (t = first_tag; t; t = t->next_tag) {
988                                 if (t->pack_id == pack_id)
989                                         fprintf(pack_edges, " %s", sha1_to_hex(t->sha1));
990                         }
991                         fputc('\n', pack_edges);
992                         fflush(pack_edges);
993                 }
995                 pack_id++;
996         }
997         else {
998                 close(old_p->pack_fd);
999                 unlink_or_warn(old_p->pack_name);
1000         }
1001         free(old_p);
1003         /* We can't carry a delta across packfiles. */
1004         strbuf_release(&last_blob.data);
1005         last_blob.offset = 0;
1006         last_blob.depth = 0;
1009 static void cycle_packfile(void)
1011         end_packfile();
1012         start_packfile();
1015 static size_t encode_header(
1016         enum object_type type,
1017         size_t size,
1018         unsigned char *hdr)
1020         int n = 1;
1021         unsigned char c;
1023         if (type < OBJ_COMMIT || type > OBJ_REF_DELTA)
1024                 die("bad type %d", type);
1026         c = (type << 4) | (size & 15);
1027         size >>= 4;
1028         while (size) {
1029                 *hdr++ = c | 0x80;
1030                 c = size & 0x7f;
1031                 size >>= 7;
1032                 n++;
1033         }
1034         *hdr = c;
1035         return n;
1038 static int store_object(
1039         enum object_type type,
1040         struct strbuf *dat,
1041         struct last_object *last,
1042         unsigned char *sha1out,
1043         uintmax_t mark)
1045         void *out, *delta;
1046         struct object_entry *e;
1047         unsigned char hdr[96];
1048         unsigned char sha1[20];
1049         unsigned long hdrlen, deltalen;
1050         git_SHA_CTX c;
1051         z_stream s;
1053         hdrlen = sprintf((char *)hdr,"%s %lu", typename(type),
1054                 (unsigned long)dat->len) + 1;
1055         git_SHA1_Init(&c);
1056         git_SHA1_Update(&c, hdr, hdrlen);
1057         git_SHA1_Update(&c, dat->buf, dat->len);
1058         git_SHA1_Final(sha1, &c);
1059         if (sha1out)
1060                 hashcpy(sha1out, sha1);
1062         e = insert_object(sha1);
1063         if (mark)
1064                 insert_mark(mark, e);
1065         if (e->offset) {
1066                 duplicate_count_by_type[type]++;
1067                 return 1;
1068         } else if (find_sha1_pack(sha1, packed_git)) {
1069                 e->type = type;
1070                 e->pack_id = MAX_PACK_ID;
1071                 e->offset = 1; /* just not zero! */
1072                 duplicate_count_by_type[type]++;
1073                 return 1;
1074         }
1076         if (last && last->data.buf && last->depth < max_depth) {
1077                 delta = diff_delta(last->data.buf, last->data.len,
1078                         dat->buf, dat->len,
1079                         &deltalen, 0);
1080                 if (delta && deltalen >= dat->len) {
1081                         free(delta);
1082                         delta = NULL;
1083                 }
1084         } else
1085                 delta = NULL;
1087         memset(&s, 0, sizeof(s));
1088         deflateInit(&s, pack_compression_level);
1089         if (delta) {
1090                 s.next_in = delta;
1091                 s.avail_in = deltalen;
1092         } else {
1093                 s.next_in = (void *)dat->buf;
1094                 s.avail_in = dat->len;
1095         }
1096         s.avail_out = deflateBound(&s, s.avail_in);
1097         s.next_out = out = xmalloc(s.avail_out);
1098         while (deflate(&s, Z_FINISH) == Z_OK)
1099                 /* nothing */;
1100         deflateEnd(&s);
1102         /* Determine if we should auto-checkpoint. */
1103         if ((pack_size + 60 + s.total_out) > max_packsize
1104                 || (pack_size + 60 + s.total_out) < pack_size) {
1106                 /* This new object needs to *not* have the current pack_id. */
1107                 e->pack_id = pack_id + 1;
1108                 cycle_packfile();
1110                 /* We cannot carry a delta into the new pack. */
1111                 if (delta) {
1112                         free(delta);
1113                         delta = NULL;
1115                         memset(&s, 0, sizeof(s));
1116                         deflateInit(&s, pack_compression_level);
1117                         s.next_in = (void *)dat->buf;
1118                         s.avail_in = dat->len;
1119                         s.avail_out = deflateBound(&s, s.avail_in);
1120                         s.next_out = out = xrealloc(out, s.avail_out);
1121                         while (deflate(&s, Z_FINISH) == Z_OK)
1122                                 /* nothing */;
1123                         deflateEnd(&s);
1124                 }
1125         }
1127         e->type = type;
1128         e->pack_id = pack_id;
1129         e->offset = pack_size;
1130         object_count++;
1131         object_count_by_type[type]++;
1133         if (delta) {
1134                 unsigned long ofs = e->offset - last->offset;
1135                 unsigned pos = sizeof(hdr) - 1;
1137                 delta_count_by_type[type]++;
1138                 e->depth = last->depth + 1;
1140                 hdrlen = encode_header(OBJ_OFS_DELTA, deltalen, hdr);
1141                 write_or_die(pack_data->pack_fd, hdr, hdrlen);
1142                 pack_size += hdrlen;
1144                 hdr[pos] = ofs & 127;
1145                 while (ofs >>= 7)
1146                         hdr[--pos] = 128 | (--ofs & 127);
1147                 write_or_die(pack_data->pack_fd, hdr + pos, sizeof(hdr) - pos);
1148                 pack_size += sizeof(hdr) - pos;
1149         } else {
1150                 e->depth = 0;
1151                 hdrlen = encode_header(type, dat->len, hdr);
1152                 write_or_die(pack_data->pack_fd, hdr, hdrlen);
1153                 pack_size += hdrlen;
1154         }
1156         write_or_die(pack_data->pack_fd, out, s.total_out);
1157         pack_size += s.total_out;
1159         free(out);
1160         free(delta);
1161         if (last) {
1162                 if (last->no_swap) {
1163                         last->data = *dat;
1164                 } else {
1165                         strbuf_swap(&last->data, dat);
1166                 }
1167                 last->offset = e->offset;
1168                 last->depth = e->depth;
1169         }
1170         return 0;
1173 /* All calls must be guarded by find_object() or find_mark() to
1174  * ensure the 'struct object_entry' passed was written by this
1175  * process instance.  We unpack the entry by the offset, avoiding
1176  * the need for the corresponding .idx file.  This unpacking rule
1177  * works because we only use OBJ_REF_DELTA within the packfiles
1178  * created by fast-import.
1179  *
1180  * oe must not be NULL.  Such an oe usually comes from giving
1181  * an unknown SHA-1 to find_object() or an undefined mark to
1182  * find_mark().  Callers must test for this condition and use
1183  * the standard read_sha1_file() when it happens.
1184  *
1185  * oe->pack_id must not be MAX_PACK_ID.  Such an oe is usually from
1186  * find_mark(), where the mark was reloaded from an existing marks
1187  * file and is referencing an object that this fast-import process
1188  * instance did not write out to a packfile.  Callers must test for
1189  * this condition and use read_sha1_file() instead.
1190  */
1191 static void *gfi_unpack_entry(
1192         struct object_entry *oe,
1193         unsigned long *sizep)
1195         enum object_type type;
1196         struct packed_git *p = all_packs[oe->pack_id];
1197         if (p == pack_data && p->pack_size < (pack_size + 20)) {
1198                 /* The object is stored in the packfile we are writing to
1199                  * and we have modified it since the last time we scanned
1200                  * back to read a previously written object.  If an old
1201                  * window covered [p->pack_size, p->pack_size + 20) its
1202                  * data is stale and is not valid.  Closing all windows
1203                  * and updating the packfile length ensures we can read
1204                  * the newly written data.
1205                  */
1206                 close_pack_windows(p);
1208                 /* We have to offer 20 bytes additional on the end of
1209                  * the packfile as the core unpacker code assumes the
1210                  * footer is present at the file end and must promise
1211                  * at least 20 bytes within any window it maps.  But
1212                  * we don't actually create the footer here.
1213                  */
1214                 p->pack_size = pack_size + 20;
1215         }
1216         return unpack_entry(p, oe->offset, &type, sizep);
1219 static const char *get_mode(const char *str, uint16_t *modep)
1221         unsigned char c;
1222         uint16_t mode = 0;
1224         while ((c = *str++) != ' ') {
1225                 if (c < '0' || c > '7')
1226                         return NULL;
1227                 mode = (mode << 3) + (c - '0');
1228         }
1229         *modep = mode;
1230         return str;
1233 static void load_tree(struct tree_entry *root)
1235         unsigned char *sha1 = root->versions[1].sha1;
1236         struct object_entry *myoe;
1237         struct tree_content *t;
1238         unsigned long size;
1239         char *buf;
1240         const char *c;
1242         root->tree = t = new_tree_content(8);
1243         if (is_null_sha1(sha1))
1244                 return;
1246         myoe = find_object(sha1);
1247         if (myoe && myoe->pack_id != MAX_PACK_ID) {
1248                 if (myoe->type != OBJ_TREE)
1249                         die("Not a tree: %s", sha1_to_hex(sha1));
1250                 t->delta_depth = myoe->depth;
1251                 buf = gfi_unpack_entry(myoe, &size);
1252                 if (!buf)
1253                         die("Can't load tree %s", sha1_to_hex(sha1));
1254         } else {
1255                 enum object_type type;
1256                 buf = read_sha1_file(sha1, &type, &size);
1257                 if (!buf || type != OBJ_TREE)
1258                         die("Can't load tree %s", sha1_to_hex(sha1));
1259         }
1261         c = buf;
1262         while (c != (buf + size)) {
1263                 struct tree_entry *e = new_tree_entry();
1265                 if (t->entry_count == t->entry_capacity)
1266                         root->tree = t = grow_tree_content(t, t->entry_count);
1267                 t->entries[t->entry_count++] = e;
1269                 e->tree = NULL;
1270                 c = get_mode(c, &e->versions[1].mode);
1271                 if (!c)
1272                         die("Corrupt mode in %s", sha1_to_hex(sha1));
1273                 e->versions[0].mode = e->versions[1].mode;
1274                 e->name = to_atom(c, strlen(c));
1275                 c += e->name->str_len + 1;
1276                 hashcpy(e->versions[0].sha1, (unsigned char *)c);
1277                 hashcpy(e->versions[1].sha1, (unsigned char *)c);
1278                 c += 20;
1279         }
1280         free(buf);
1283 static int tecmp0 (const void *_a, const void *_b)
1285         struct tree_entry *a = *((struct tree_entry**)_a);
1286         struct tree_entry *b = *((struct tree_entry**)_b);
1287         return base_name_compare(
1288                 a->name->str_dat, a->name->str_len, a->versions[0].mode,
1289                 b->name->str_dat, b->name->str_len, b->versions[0].mode);
1292 static int tecmp1 (const void *_a, const void *_b)
1294         struct tree_entry *a = *((struct tree_entry**)_a);
1295         struct tree_entry *b = *((struct tree_entry**)_b);
1296         return base_name_compare(
1297                 a->name->str_dat, a->name->str_len, a->versions[1].mode,
1298                 b->name->str_dat, b->name->str_len, b->versions[1].mode);
1301 static void mktree(struct tree_content *t, int v, struct strbuf *b)
1303         size_t maxlen = 0;
1304         unsigned int i;
1306         if (!v)
1307                 qsort(t->entries,t->entry_count,sizeof(t->entries[0]),tecmp0);
1308         else
1309                 qsort(t->entries,t->entry_count,sizeof(t->entries[0]),tecmp1);
1311         for (i = 0; i < t->entry_count; i++) {
1312                 if (t->entries[i]->versions[v].mode)
1313                         maxlen += t->entries[i]->name->str_len + 34;
1314         }
1316         strbuf_reset(b);
1317         strbuf_grow(b, maxlen);
1318         for (i = 0; i < t->entry_count; i++) {
1319                 struct tree_entry *e = t->entries[i];
1320                 if (!e->versions[v].mode)
1321                         continue;
1322                 strbuf_addf(b, "%o %s%c", (unsigned int)e->versions[v].mode,
1323                                         e->name->str_dat, '\0');
1324                 strbuf_add(b, e->versions[v].sha1, 20);
1325         }
1328 static void store_tree(struct tree_entry *root)
1330         struct tree_content *t = root->tree;
1331         unsigned int i, j, del;
1332         struct last_object lo = { STRBUF_INIT, 0, 0, /* no_swap */ 1 };
1333         struct object_entry *le;
1335         if (!is_null_sha1(root->versions[1].sha1))
1336                 return;
1338         for (i = 0; i < t->entry_count; i++) {
1339                 if (t->entries[i]->tree)
1340                         store_tree(t->entries[i]);
1341         }
1343         le = find_object(root->versions[0].sha1);
1344         if (S_ISDIR(root->versions[0].mode) && le && le->pack_id == pack_id) {
1345                 mktree(t, 0, &old_tree);
1346                 lo.data = old_tree;
1347                 lo.offset = le->offset;
1348                 lo.depth = t->delta_depth;
1349         }
1351         mktree(t, 1, &new_tree);
1352         store_object(OBJ_TREE, &new_tree, &lo, root->versions[1].sha1, 0);
1354         t->delta_depth = lo.depth;
1355         for (i = 0, j = 0, del = 0; i < t->entry_count; i++) {
1356                 struct tree_entry *e = t->entries[i];
1357                 if (e->versions[1].mode) {
1358                         e->versions[0].mode = e->versions[1].mode;
1359                         hashcpy(e->versions[0].sha1, e->versions[1].sha1);
1360                         t->entries[j++] = e;
1361                 } else {
1362                         release_tree_entry(e);
1363                         del++;
1364                 }
1365         }
1366         t->entry_count -= del;
1369 static int tree_content_set(
1370         struct tree_entry *root,
1371         const char *p,
1372         const unsigned char *sha1,
1373         const uint16_t mode,
1374         struct tree_content *subtree)
1376         struct tree_content *t = root->tree;
1377         const char *slash1;
1378         unsigned int i, n;
1379         struct tree_entry *e;
1381         slash1 = strchr(p, '/');
1382         if (slash1)
1383                 n = slash1 - p;
1384         else
1385                 n = strlen(p);
1386         if (!n)
1387                 die("Empty path component found in input");
1388         if (!slash1 && !S_ISDIR(mode) && subtree)
1389                 die("Non-directories cannot have subtrees");
1391         for (i = 0; i < t->entry_count; i++) {
1392                 e = t->entries[i];
1393                 if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) {
1394                         if (!slash1) {
1395                                 if (!S_ISDIR(mode)
1396                                                 && e->versions[1].mode == mode
1397                                                 && !hashcmp(e->versions[1].sha1, sha1))
1398                                         return 0;
1399                                 e->versions[1].mode = mode;
1400                                 hashcpy(e->versions[1].sha1, sha1);
1401                                 if (e->tree)
1402                                         release_tree_content_recursive(e->tree);
1403                                 e->tree = subtree;
1404                                 hashclr(root->versions[1].sha1);
1405                                 return 1;
1406                         }
1407                         if (!S_ISDIR(e->versions[1].mode)) {
1408                                 e->tree = new_tree_content(8);
1409                                 e->versions[1].mode = S_IFDIR;
1410                         }
1411                         if (!e->tree)
1412                                 load_tree(e);
1413                         if (tree_content_set(e, slash1 + 1, sha1, mode, subtree)) {
1414                                 hashclr(root->versions[1].sha1);
1415                                 return 1;
1416                         }
1417                         return 0;
1418                 }
1419         }
1421         if (t->entry_count == t->entry_capacity)
1422                 root->tree = t = grow_tree_content(t, t->entry_count);
1423         e = new_tree_entry();
1424         e->name = to_atom(p, n);
1425         e->versions[0].mode = 0;
1426         hashclr(e->versions[0].sha1);
1427         t->entries[t->entry_count++] = e;
1428         if (slash1) {
1429                 e->tree = new_tree_content(8);
1430                 e->versions[1].mode = S_IFDIR;
1431                 tree_content_set(e, slash1 + 1, sha1, mode, subtree);
1432         } else {
1433                 e->tree = subtree;
1434                 e->versions[1].mode = mode;
1435                 hashcpy(e->versions[1].sha1, sha1);
1436         }
1437         hashclr(root->versions[1].sha1);
1438         return 1;
1441 static int tree_content_remove(
1442         struct tree_entry *root,
1443         const char *p,
1444         struct tree_entry *backup_leaf)
1446         struct tree_content *t = root->tree;
1447         const char *slash1;
1448         unsigned int i, n;
1449         struct tree_entry *e;
1451         slash1 = strchr(p, '/');
1452         if (slash1)
1453                 n = slash1 - p;
1454         else
1455                 n = strlen(p);
1457         for (i = 0; i < t->entry_count; i++) {
1458                 e = t->entries[i];
1459                 if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) {
1460                         if (!slash1 || !S_ISDIR(e->versions[1].mode))
1461                                 goto del_entry;
1462                         if (!e->tree)
1463                                 load_tree(e);
1464                         if (tree_content_remove(e, slash1 + 1, backup_leaf)) {
1465                                 for (n = 0; n < e->tree->entry_count; n++) {
1466                                         if (e->tree->entries[n]->versions[1].mode) {
1467                                                 hashclr(root->versions[1].sha1);
1468                                                 return 1;
1469                                         }
1470                                 }
1471                                 backup_leaf = NULL;
1472                                 goto del_entry;
1473                         }
1474                         return 0;
1475                 }
1476         }
1477         return 0;
1479 del_entry:
1480         if (backup_leaf)
1481                 memcpy(backup_leaf, e, sizeof(*backup_leaf));
1482         else if (e->tree)
1483                 release_tree_content_recursive(e->tree);
1484         e->tree = NULL;
1485         e->versions[1].mode = 0;
1486         hashclr(e->versions[1].sha1);
1487         hashclr(root->versions[1].sha1);
1488         return 1;
1491 static int tree_content_get(
1492         struct tree_entry *root,
1493         const char *p,
1494         struct tree_entry *leaf)
1496         struct tree_content *t = root->tree;
1497         const char *slash1;
1498         unsigned int i, n;
1499         struct tree_entry *e;
1501         slash1 = strchr(p, '/');
1502         if (slash1)
1503                 n = slash1 - p;
1504         else
1505                 n = strlen(p);
1507         for (i = 0; i < t->entry_count; i++) {
1508                 e = t->entries[i];
1509                 if (e->name->str_len == n && !strncmp(p, e->name->str_dat, n)) {
1510                         if (!slash1) {
1511                                 memcpy(leaf, e, sizeof(*leaf));
1512                                 if (e->tree && is_null_sha1(e->versions[1].sha1))
1513                                         leaf->tree = dup_tree_content(e->tree);
1514                                 else
1515                                         leaf->tree = NULL;
1516                                 return 1;
1517                         }
1518                         if (!S_ISDIR(e->versions[1].mode))
1519                                 return 0;
1520                         if (!e->tree)
1521                                 load_tree(e);
1522                         return tree_content_get(e, slash1 + 1, leaf);
1523                 }
1524         }
1525         return 0;
1528 static int update_branch(struct branch *b)
1530         static const char *msg = "fast-import";
1531         struct ref_lock *lock;
1532         unsigned char old_sha1[20];
1534         if (is_null_sha1(b->sha1))
1535                 return 0;
1536         if (read_ref(b->name, old_sha1))
1537                 hashclr(old_sha1);
1538         lock = lock_any_ref_for_update(b->name, old_sha1, 0);
1539         if (!lock)
1540                 return error("Unable to lock %s", b->name);
1541         if (!force_update && !is_null_sha1(old_sha1)) {
1542                 struct commit *old_cmit, *new_cmit;
1544                 old_cmit = lookup_commit_reference_gently(old_sha1, 0);
1545                 new_cmit = lookup_commit_reference_gently(b->sha1, 0);
1546                 if (!old_cmit || !new_cmit) {
1547                         unlock_ref(lock);
1548                         return error("Branch %s is missing commits.", b->name);
1549                 }
1551                 if (!in_merge_bases(old_cmit, &new_cmit, 1)) {
1552                         unlock_ref(lock);
1553                         warning("Not updating %s"
1554                                 " (new tip %s does not contain %s)",
1555                                 b->name, sha1_to_hex(b->sha1), sha1_to_hex(old_sha1));
1556                         return -1;
1557                 }
1558         }
1559         if (write_ref_sha1(lock, b->sha1, msg) < 0)
1560                 return error("Unable to update %s", b->name);
1561         return 0;
1564 static void dump_branches(void)
1566         unsigned int i;
1567         struct branch *b;
1569         for (i = 0; i < branch_table_sz; i++) {
1570                 for (b = branch_table[i]; b; b = b->table_next_branch)
1571                         failure |= update_branch(b);
1572         }
1575 static void dump_tags(void)
1577         static const char *msg = "fast-import";
1578         struct tag *t;
1579         struct ref_lock *lock;
1580         char ref_name[PATH_MAX];
1582         for (t = first_tag; t; t = t->next_tag) {
1583                 sprintf(ref_name, "tags/%s", t->name);
1584                 lock = lock_ref_sha1(ref_name, NULL);
1585                 if (!lock || write_ref_sha1(lock, t->sha1, msg) < 0)
1586                         failure |= error("Unable to update %s", ref_name);
1587         }
1590 static void dump_marks_helper(FILE *f,
1591         uintmax_t base,
1592         struct mark_set *m)
1594         uintmax_t k;
1595         if (m->shift) {
1596                 for (k = 0; k < 1024; k++) {
1597                         if (m->data.sets[k])
1598                                 dump_marks_helper(f, (base + k) << m->shift,
1599                                         m->data.sets[k]);
1600                 }
1601         } else {
1602                 for (k = 0; k < 1024; k++) {
1603                         if (m->data.marked[k])
1604                                 fprintf(f, ":%" PRIuMAX " %s\n", base + k,
1605                                         sha1_to_hex(m->data.marked[k]->sha1));
1606                 }
1607         }
1610 static void dump_marks(void)
1612         static struct lock_file mark_lock;
1613         int mark_fd;
1614         FILE *f;
1616         if (!export_marks_file)
1617                 return;
1619         mark_fd = hold_lock_file_for_update(&mark_lock, export_marks_file, 0);
1620         if (mark_fd < 0) {
1621                 failure |= error("Unable to write marks file %s: %s",
1622                         export_marks_file, strerror(errno));
1623                 return;
1624         }
1626         f = fdopen(mark_fd, "w");
1627         if (!f) {
1628                 int saved_errno = errno;
1629                 rollback_lock_file(&mark_lock);
1630                 failure |= error("Unable to write marks file %s: %s",
1631                         export_marks_file, strerror(saved_errno));
1632                 return;
1633         }
1635         /*
1636          * Since the lock file was fdopen()'ed, it should not be close()'ed.
1637          * Assign -1 to the lock file descriptor so that commit_lock_file()
1638          * won't try to close() it.
1639          */
1640         mark_lock.fd = -1;
1642         dump_marks_helper(f, 0, marks);
1643         if (ferror(f) || fclose(f)) {
1644                 int saved_errno = errno;
1645                 rollback_lock_file(&mark_lock);
1646                 failure |= error("Unable to write marks file %s: %s",
1647                         export_marks_file, strerror(saved_errno));
1648                 return;
1649         }
1651         if (commit_lock_file(&mark_lock)) {
1652                 int saved_errno = errno;
1653                 rollback_lock_file(&mark_lock);
1654                 failure |= error("Unable to commit marks file %s: %s",
1655                         export_marks_file, strerror(saved_errno));
1656                 return;
1657         }
1660 static void read_marks(void)
1662         char line[512];
1663         FILE *f = fopen(import_marks_file, "r");
1664         if (!f)
1665                 die_errno("cannot read '%s'", import_marks_file);
1666         while (fgets(line, sizeof(line), f)) {
1667                 uintmax_t mark;
1668                 char *end;
1669                 unsigned char sha1[20];
1670                 struct object_entry *e;
1672                 end = strchr(line, '\n');
1673                 if (line[0] != ':' || !end)
1674                         die("corrupt mark line: %s", line);
1675                 *end = 0;
1676                 mark = strtoumax(line + 1, &end, 10);
1677                 if (!mark || end == line + 1
1678                         || *end != ' ' || get_sha1(end + 1, sha1))
1679                         die("corrupt mark line: %s", line);
1680                 e = find_object(sha1);
1681                 if (!e) {
1682                         enum object_type type = sha1_object_info(sha1, NULL);
1683                         if (type < 0)
1684                                 die("object not found: %s", sha1_to_hex(sha1));
1685                         e = insert_object(sha1);
1686                         e->type = type;
1687                         e->pack_id = MAX_PACK_ID;
1688                         e->offset = 1; /* just not zero! */
1689                 }
1690                 insert_mark(mark, e);
1691         }
1692         fclose(f);
1696 static int read_next_command(void)
1698         static int stdin_eof = 0;
1700         if (stdin_eof) {
1701                 unread_command_buf = 0;
1702                 return EOF;
1703         }
1705         do {
1706                 if (unread_command_buf) {
1707                         unread_command_buf = 0;
1708                 } else {
1709                         struct recent_command *rc;
1711                         strbuf_detach(&command_buf, NULL);
1712                         stdin_eof = strbuf_getline(&command_buf, stdin, '\n');
1713                         if (stdin_eof)
1714                                 return EOF;
1716                         if (!seen_data_command
1717                                 && prefixcmp(command_buf.buf, "feature ")
1718                                 && prefixcmp(command_buf.buf, "option ")) {
1719                                 parse_argv();
1720                         }
1722                         rc = rc_free;
1723                         if (rc)
1724                                 rc_free = rc->next;
1725                         else {
1726                                 rc = cmd_hist.next;
1727                                 cmd_hist.next = rc->next;
1728                                 cmd_hist.next->prev = &cmd_hist;
1729                                 free(rc->buf);
1730                         }
1732                         rc->buf = command_buf.buf;
1733                         rc->prev = cmd_tail;
1734                         rc->next = cmd_hist.prev;
1735                         rc->prev->next = rc;
1736                         cmd_tail = rc;
1737                 }
1738         } while (command_buf.buf[0] == '#');
1740         return 0;
1743 static void skip_optional_lf(void)
1745         int term_char = fgetc(stdin);
1746         if (term_char != '\n' && term_char != EOF)
1747                 ungetc(term_char, stdin);
1750 static void parse_mark(void)
1752         if (!prefixcmp(command_buf.buf, "mark :")) {
1753                 next_mark = strtoumax(command_buf.buf + 6, NULL, 10);
1754                 read_next_command();
1755         }
1756         else
1757                 next_mark = 0;
1760 static void parse_data(struct strbuf *sb)
1762         strbuf_reset(sb);
1764         if (prefixcmp(command_buf.buf, "data "))
1765                 die("Expected 'data n' command, found: %s", command_buf.buf);
1767         if (!prefixcmp(command_buf.buf + 5, "<<")) {
1768                 char *term = xstrdup(command_buf.buf + 5 + 2);
1769                 size_t term_len = command_buf.len - 5 - 2;
1771                 strbuf_detach(&command_buf, NULL);
1772                 for (;;) {
1773                         if (strbuf_getline(&command_buf, stdin, '\n') == EOF)
1774                                 die("EOF in data (terminator '%s' not found)", term);
1775                         if (term_len == command_buf.len
1776                                 && !strcmp(term, command_buf.buf))
1777                                 break;
1778                         strbuf_addbuf(sb, &command_buf);
1779                         strbuf_addch(sb, '\n');
1780                 }
1781                 free(term);
1782         }
1783         else {
1784                 size_t n = 0, length;
1786                 length = strtoul(command_buf.buf + 5, NULL, 10);
1788                 while (n < length) {
1789                         size_t s = strbuf_fread(sb, length - n, stdin);
1790                         if (!s && feof(stdin))
1791                                 die("EOF in data (%lu bytes remaining)",
1792                                         (unsigned long)(length - n));
1793                         n += s;
1794                 }
1795         }
1797         skip_optional_lf();
1800 static int validate_raw_date(const char *src, char *result, int maxlen)
1802         const char *orig_src = src;
1803         char *endp;
1804         unsigned long num;
1806         errno = 0;
1808         num = strtoul(src, &endp, 10);
1809         /* NEEDSWORK: perhaps check for reasonable values? */
1810         if (errno || endp == src || *endp != ' ')
1811                 return -1;
1813         src = endp + 1;
1814         if (*src != '-' && *src != '+')
1815                 return -1;
1817         num = strtoul(src + 1, &endp, 10);
1818         if (errno || endp == src + 1 || *endp || (endp - orig_src) >= maxlen ||
1819             1400 < num)
1820                 return -1;
1822         strcpy(result, orig_src);
1823         return 0;
1826 static char *parse_ident(const char *buf)
1828         const char *gt;
1829         size_t name_len;
1830         char *ident;
1832         gt = strrchr(buf, '>');
1833         if (!gt)
1834                 die("Missing > in ident string: %s", buf);
1835         gt++;
1836         if (*gt != ' ')
1837                 die("Missing space after > in ident string: %s", buf);
1838         gt++;
1839         name_len = gt - buf;
1840         ident = xmalloc(name_len + 24);
1841         strncpy(ident, buf, name_len);
1843         switch (whenspec) {
1844         case WHENSPEC_RAW:
1845                 if (validate_raw_date(gt, ident + name_len, 24) < 0)
1846                         die("Invalid raw date \"%s\" in ident: %s", gt, buf);
1847                 break;
1848         case WHENSPEC_RFC2822:
1849                 if (parse_date(gt, ident + name_len, 24) < 0)
1850                         die("Invalid rfc2822 date \"%s\" in ident: %s", gt, buf);
1851                 break;
1852         case WHENSPEC_NOW:
1853                 if (strcmp("now", gt))
1854                         die("Date in ident must be 'now': %s", buf);
1855                 datestamp(ident + name_len, 24);
1856                 break;
1857         }
1859         return ident;
1862 static void parse_new_blob(void)
1864         static struct strbuf buf = STRBUF_INIT;
1866         read_next_command();
1867         parse_mark();
1868         parse_data(&buf);
1869         store_object(OBJ_BLOB, &buf, &last_blob, NULL, next_mark);
1872 static void unload_one_branch(void)
1874         while (cur_active_branches
1875                 && cur_active_branches >= max_active_branches) {
1876                 uintmax_t min_commit = ULONG_MAX;
1877                 struct branch *e, *l = NULL, *p = NULL;
1879                 for (e = active_branches; e; e = e->active_next_branch) {
1880                         if (e->last_commit < min_commit) {
1881                                 p = l;
1882                                 min_commit = e->last_commit;
1883                         }
1884                         l = e;
1885                 }
1887                 if (p) {
1888                         e = p->active_next_branch;
1889                         p->active_next_branch = e->active_next_branch;
1890                 } else {
1891                         e = active_branches;
1892                         active_branches = e->active_next_branch;
1893                 }
1894                 e->active = 0;
1895                 e->active_next_branch = NULL;
1896                 if (e->branch_tree.tree) {
1897                         release_tree_content_recursive(e->branch_tree.tree);
1898                         e->branch_tree.tree = NULL;
1899                 }
1900                 cur_active_branches--;
1901         }
1904 static void load_branch(struct branch *b)
1906         load_tree(&b->branch_tree);
1907         if (!b->active) {
1908                 b->active = 1;
1909                 b->active_next_branch = active_branches;
1910                 active_branches = b;
1911                 cur_active_branches++;
1912                 branch_load_count++;
1913         }
1916 static unsigned char convert_num_notes_to_fanout(uintmax_t num_notes)
1918         unsigned char fanout = 0;
1919         while ((num_notes >>= 8))
1920                 fanout++;
1921         return fanout;
1924 static void construct_path_with_fanout(const char *hex_sha1,
1925                 unsigned char fanout, char *path)
1927         unsigned int i = 0, j = 0;
1928         if (fanout >= 20)
1929                 die("Too large fanout (%u)", fanout);
1930         while (fanout) {
1931                 path[i++] = hex_sha1[j++];
1932                 path[i++] = hex_sha1[j++];
1933                 path[i++] = '/';
1934                 fanout--;
1935         }
1936         memcpy(path + i, hex_sha1 + j, 40 - j);
1937         path[i + 40 - j] = '\0';
1940 static uintmax_t do_change_note_fanout(
1941                 struct tree_entry *orig_root, struct tree_entry *root,
1942                 char *hex_sha1, unsigned int hex_sha1_len,
1943                 char *fullpath, unsigned int fullpath_len,
1944                 unsigned char fanout)
1946         struct tree_content *t = root->tree;
1947         struct tree_entry *e, leaf;
1948         unsigned int i, tmp_hex_sha1_len, tmp_fullpath_len;
1949         uintmax_t num_notes = 0;
1950         unsigned char sha1[20];
1951         char realpath[60];
1953         for (i = 0; t && i < t->entry_count; i++) {
1954                 e = t->entries[i];
1955                 tmp_hex_sha1_len = hex_sha1_len + e->name->str_len;
1956                 tmp_fullpath_len = fullpath_len;
1958                 /*
1959                  * We're interested in EITHER existing note entries (entries
1960                  * with exactly 40 hex chars in path, not including directory
1961                  * separators), OR directory entries that may contain note
1962                  * entries (with < 40 hex chars in path).
1963                  * Also, each path component in a note entry must be a multiple
1964                  * of 2 chars.
1965                  */
1966                 if (!e->versions[1].mode ||
1967                     tmp_hex_sha1_len > 40 ||
1968                     e->name->str_len % 2)
1969                         continue;
1971                 /* This _may_ be a note entry, or a subdir containing notes */
1972                 memcpy(hex_sha1 + hex_sha1_len, e->name->str_dat,
1973                        e->name->str_len);
1974                 if (tmp_fullpath_len)
1975                         fullpath[tmp_fullpath_len++] = '/';
1976                 memcpy(fullpath + tmp_fullpath_len, e->name->str_dat,
1977                        e->name->str_len);
1978                 tmp_fullpath_len += e->name->str_len;
1979                 fullpath[tmp_fullpath_len] = '\0';
1981                 if (tmp_hex_sha1_len == 40 && !get_sha1_hex(hex_sha1, sha1)) {
1982                         /* This is a note entry */
1983                         construct_path_with_fanout(hex_sha1, fanout, realpath);
1984                         if (!strcmp(fullpath, realpath)) {
1985                                 /* Note entry is in correct location */
1986                                 num_notes++;
1987                                 continue;
1988                         }
1990                         /* Rename fullpath to realpath */
1991                         if (!tree_content_remove(orig_root, fullpath, &leaf))
1992                                 die("Failed to remove path %s", fullpath);
1993                         tree_content_set(orig_root, realpath,
1994                                 leaf.versions[1].sha1,
1995                                 leaf.versions[1].mode,
1996                                 leaf.tree);
1997                 } else if (S_ISDIR(e->versions[1].mode)) {
1998                         /* This is a subdir that may contain note entries */
1999                         if (!e->tree)
2000                                 load_tree(e);
2001                         num_notes += do_change_note_fanout(orig_root, e,
2002                                 hex_sha1, tmp_hex_sha1_len,
2003                                 fullpath, tmp_fullpath_len, fanout);
2004                 }
2006                 /* The above may have reallocated the current tree_content */
2007                 t = root->tree;
2008         }
2009         return num_notes;
2012 static uintmax_t change_note_fanout(struct tree_entry *root,
2013                 unsigned char fanout)
2015         char hex_sha1[40], path[60];
2016         return do_change_note_fanout(root, root, hex_sha1, 0, path, 0, fanout);
2019 static void file_change_m(struct branch *b)
2021         const char *p = command_buf.buf + 2;
2022         static struct strbuf uq = STRBUF_INIT;
2023         const char *endp;
2024         struct object_entry *oe = oe;
2025         unsigned char sha1[20];
2026         uint16_t mode, inline_data = 0;
2028         p = get_mode(p, &mode);
2029         if (!p)
2030                 die("Corrupt mode: %s", command_buf.buf);
2031         switch (mode) {
2032         case 0644:
2033         case 0755:
2034                 mode |= S_IFREG;
2035         case S_IFREG | 0644:
2036         case S_IFREG | 0755:
2037         case S_IFLNK:
2038         case S_IFGITLINK:
2039                 /* ok */
2040                 break;
2041         default:
2042                 die("Corrupt mode: %s", command_buf.buf);
2043         }
2045         if (*p == ':') {
2046                 char *x;
2047                 oe = find_mark(strtoumax(p + 1, &x, 10));
2048                 hashcpy(sha1, oe->sha1);
2049                 p = x;
2050         } else if (!prefixcmp(p, "inline")) {
2051                 inline_data = 1;
2052                 p += 6;
2053         } else {
2054                 if (get_sha1_hex(p, sha1))
2055                         die("Invalid SHA1: %s", command_buf.buf);
2056                 oe = find_object(sha1);
2057                 p += 40;
2058         }
2059         if (*p++ != ' ')
2060                 die("Missing space after SHA1: %s", command_buf.buf);
2062         strbuf_reset(&uq);
2063         if (!unquote_c_style(&uq, p, &endp)) {
2064                 if (*endp)
2065                         die("Garbage after path in: %s", command_buf.buf);
2066                 p = uq.buf;
2067         }
2069         if (S_ISGITLINK(mode)) {
2070                 if (inline_data)
2071                         die("Git links cannot be specified 'inline': %s",
2072                                 command_buf.buf);
2073                 else if (oe) {
2074                         if (oe->type != OBJ_COMMIT)
2075                                 die("Not a commit (actually a %s): %s",
2076                                         typename(oe->type), command_buf.buf);
2077                 }
2078                 /*
2079                  * Accept the sha1 without checking; it expected to be in
2080                  * another repository.
2081                  */
2082         } else if (inline_data) {
2083                 static struct strbuf buf = STRBUF_INIT;
2085                 if (p != uq.buf) {
2086                         strbuf_addstr(&uq, p);
2087                         p = uq.buf;
2088                 }
2089                 read_next_command();
2090                 parse_data(&buf);
2091                 store_object(OBJ_BLOB, &buf, &last_blob, sha1, 0);
2092         } else if (oe) {
2093                 if (oe->type != OBJ_BLOB)
2094                         die("Not a blob (actually a %s): %s",
2095                                 typename(oe->type), command_buf.buf);
2096         } else {
2097                 enum object_type type = sha1_object_info(sha1, NULL);
2098                 if (type < 0)
2099                         die("Blob not found: %s", command_buf.buf);
2100                 if (type != OBJ_BLOB)
2101                         die("Not a blob (actually a %s): %s",
2102                             typename(type), command_buf.buf);
2103         }
2105         tree_content_set(&b->branch_tree, p, sha1, mode, NULL);
2108 static void file_change_d(struct branch *b)
2110         const char *p = command_buf.buf + 2;
2111         static struct strbuf uq = STRBUF_INIT;
2112         const char *endp;
2114         strbuf_reset(&uq);
2115         if (!unquote_c_style(&uq, p, &endp)) {
2116                 if (*endp)
2117                         die("Garbage after path in: %s", command_buf.buf);
2118                 p = uq.buf;
2119         }
2120         tree_content_remove(&b->branch_tree, p, NULL);
2123 static void file_change_cr(struct branch *b, int rename)
2125         const char *s, *d;
2126         static struct strbuf s_uq = STRBUF_INIT;
2127         static struct strbuf d_uq = STRBUF_INIT;
2128         const char *endp;
2129         struct tree_entry leaf;
2131         s = command_buf.buf + 2;
2132         strbuf_reset(&s_uq);
2133         if (!unquote_c_style(&s_uq, s, &endp)) {
2134                 if (*endp != ' ')
2135                         die("Missing space after source: %s", command_buf.buf);
2136         } else {
2137                 endp = strchr(s, ' ');
2138                 if (!endp)
2139                         die("Missing space after source: %s", command_buf.buf);
2140                 strbuf_add(&s_uq, s, endp - s);
2141         }
2142         s = s_uq.buf;
2144         endp++;
2145         if (!*endp)
2146                 die("Missing dest: %s", command_buf.buf);
2148         d = endp;
2149         strbuf_reset(&d_uq);
2150         if (!unquote_c_style(&d_uq, d, &endp)) {
2151                 if (*endp)
2152                         die("Garbage after dest in: %s", command_buf.buf);
2153                 d = d_uq.buf;
2154         }
2156         memset(&leaf, 0, sizeof(leaf));
2157         if (rename)
2158                 tree_content_remove(&b->branch_tree, s, &leaf);
2159         else
2160                 tree_content_get(&b->branch_tree, s, &leaf);
2161         if (!leaf.versions[1].mode)
2162                 die("Path %s not in branch", s);
2163         tree_content_set(&b->branch_tree, d,
2164                 leaf.versions[1].sha1,
2165                 leaf.versions[1].mode,
2166                 leaf.tree);
2169 static void note_change_n(struct branch *b, unsigned char old_fanout)
2171         const char *p = command_buf.buf + 2;
2172         static struct strbuf uq = STRBUF_INIT;
2173         struct object_entry *oe = oe;
2174         struct branch *s;
2175         unsigned char sha1[20], commit_sha1[20];
2176         char path[60];
2177         uint16_t inline_data = 0;
2178         unsigned char new_fanout;
2180         /* <dataref> or 'inline' */
2181         if (*p == ':') {
2182                 char *x;
2183                 oe = find_mark(strtoumax(p + 1, &x, 10));
2184                 hashcpy(sha1, oe->sha1);
2185                 p = x;
2186         } else if (!prefixcmp(p, "inline")) {
2187                 inline_data = 1;
2188                 p += 6;
2189         } else {
2190                 if (get_sha1_hex(p, sha1))
2191                         die("Invalid SHA1: %s", command_buf.buf);
2192                 oe = find_object(sha1);
2193                 p += 40;
2194         }
2195         if (*p++ != ' ')
2196                 die("Missing space after SHA1: %s", command_buf.buf);
2198         /* <committish> */
2199         s = lookup_branch(p);
2200         if (s) {
2201                 hashcpy(commit_sha1, s->sha1);
2202         } else if (*p == ':') {
2203                 uintmax_t commit_mark = strtoumax(p + 1, NULL, 10);
2204                 struct object_entry *commit_oe = find_mark(commit_mark);
2205                 if (commit_oe->type != OBJ_COMMIT)
2206                         die("Mark :%" PRIuMAX " not a commit", commit_mark);
2207                 hashcpy(commit_sha1, commit_oe->sha1);
2208         } else if (!get_sha1(p, commit_sha1)) {
2209                 unsigned long size;
2210                 char *buf = read_object_with_reference(commit_sha1,
2211                         commit_type, &size, commit_sha1);
2212                 if (!buf || size < 46)
2213                         die("Not a valid commit: %s", p);
2214                 free(buf);
2215         } else
2216                 die("Invalid ref name or SHA1 expression: %s", p);
2218         if (inline_data) {
2219                 static struct strbuf buf = STRBUF_INIT;
2221                 if (p != uq.buf) {
2222                         strbuf_addstr(&uq, p);
2223                         p = uq.buf;
2224                 }
2225                 read_next_command();
2226                 parse_data(&buf);
2227                 store_object(OBJ_BLOB, &buf, &last_blob, sha1, 0);
2228         } else if (oe) {
2229                 if (oe->type != OBJ_BLOB)
2230                         die("Not a blob (actually a %s): %s",
2231                                 typename(oe->type), command_buf.buf);
2232         } else if (!is_null_sha1(sha1)) {
2233                 enum object_type type = sha1_object_info(sha1, NULL);
2234                 if (type < 0)
2235                         die("Blob not found: %s", command_buf.buf);
2236                 if (type != OBJ_BLOB)
2237                         die("Not a blob (actually a %s): %s",
2238                             typename(type), command_buf.buf);
2239         }
2241         construct_path_with_fanout(sha1_to_hex(commit_sha1), old_fanout, path);
2242         if (tree_content_remove(&b->branch_tree, path, NULL))
2243                 b->num_notes--;
2245         if (is_null_sha1(sha1))
2246                 return; /* nothing to insert */
2248         b->num_notes++;
2249         new_fanout = convert_num_notes_to_fanout(b->num_notes);
2250         construct_path_with_fanout(sha1_to_hex(commit_sha1), new_fanout, path);
2251         tree_content_set(&b->branch_tree, path, sha1, S_IFREG | 0644, NULL);
2254 static void file_change_deleteall(struct branch *b)
2256         release_tree_content_recursive(b->branch_tree.tree);
2257         hashclr(b->branch_tree.versions[0].sha1);
2258         hashclr(b->branch_tree.versions[1].sha1);
2259         load_tree(&b->branch_tree);
2260         b->num_notes = 0;
2263 static void parse_from_commit(struct branch *b, char *buf, unsigned long size)
2265         if (!buf || size < 46)
2266                 die("Not a valid commit: %s", sha1_to_hex(b->sha1));
2267         if (memcmp("tree ", buf, 5)
2268                 || get_sha1_hex(buf + 5, b->branch_tree.versions[1].sha1))
2269                 die("The commit %s is corrupt", sha1_to_hex(b->sha1));
2270         hashcpy(b->branch_tree.versions[0].sha1,
2271                 b->branch_tree.versions[1].sha1);
2274 static void parse_from_existing(struct branch *b)
2276         if (is_null_sha1(b->sha1)) {
2277                 hashclr(b->branch_tree.versions[0].sha1);
2278                 hashclr(b->branch_tree.versions[1].sha1);
2279         } else {
2280                 unsigned long size;
2281                 char *buf;
2283                 buf = read_object_with_reference(b->sha1,
2284                         commit_type, &size, b->sha1);
2285                 parse_from_commit(b, buf, size);
2286                 free(buf);
2287         }
2290 static int parse_from(struct branch *b)
2292         const char *from;
2293         struct branch *s;
2295         if (prefixcmp(command_buf.buf, "from "))
2296                 return 0;
2298         if (b->branch_tree.tree) {
2299                 release_tree_content_recursive(b->branch_tree.tree);
2300                 b->branch_tree.tree = NULL;
2301         }
2303         from = strchr(command_buf.buf, ' ') + 1;
2304         s = lookup_branch(from);
2305         if (b == s)
2306                 die("Can't create a branch from itself: %s", b->name);
2307         else if (s) {
2308                 unsigned char *t = s->branch_tree.versions[1].sha1;
2309                 hashcpy(b->sha1, s->sha1);
2310                 hashcpy(b->branch_tree.versions[0].sha1, t);
2311                 hashcpy(b->branch_tree.versions[1].sha1, t);
2312         } else if (*from == ':') {
2313                 uintmax_t idnum = strtoumax(from + 1, NULL, 10);
2314                 struct object_entry *oe = find_mark(idnum);
2315                 if (oe->type != OBJ_COMMIT)
2316                         die("Mark :%" PRIuMAX " not a commit", idnum);
2317                 hashcpy(b->sha1, oe->sha1);
2318                 if (oe->pack_id != MAX_PACK_ID) {
2319                         unsigned long size;
2320                         char *buf = gfi_unpack_entry(oe, &size);
2321                         parse_from_commit(b, buf, size);
2322                         free(buf);
2323                 } else
2324                         parse_from_existing(b);
2325         } else if (!get_sha1(from, b->sha1))
2326                 parse_from_existing(b);
2327         else
2328                 die("Invalid ref name or SHA1 expression: %s", from);
2330         read_next_command();
2331         return 1;
2334 static struct hash_list *parse_merge(unsigned int *count)
2336         struct hash_list *list = NULL, *n, *e = e;
2337         const char *from;
2338         struct branch *s;
2340         *count = 0;
2341         while (!prefixcmp(command_buf.buf, "merge ")) {
2342                 from = strchr(command_buf.buf, ' ') + 1;
2343                 n = xmalloc(sizeof(*n));
2344                 s = lookup_branch(from);
2345                 if (s)
2346                         hashcpy(n->sha1, s->sha1);
2347                 else if (*from == ':') {
2348                         uintmax_t idnum = strtoumax(from + 1, NULL, 10);
2349                         struct object_entry *oe = find_mark(idnum);
2350                         if (oe->type != OBJ_COMMIT)
2351                                 die("Mark :%" PRIuMAX " not a commit", idnum);
2352                         hashcpy(n->sha1, oe->sha1);
2353                 } else if (!get_sha1(from, n->sha1)) {
2354                         unsigned long size;
2355                         char *buf = read_object_with_reference(n->sha1,
2356                                 commit_type, &size, n->sha1);
2357                         if (!buf || size < 46)
2358                                 die("Not a valid commit: %s", from);
2359                         free(buf);
2360                 } else
2361                         die("Invalid ref name or SHA1 expression: %s", from);
2363                 n->next = NULL;
2364                 if (list)
2365                         e->next = n;
2366                 else
2367                         list = n;
2368                 e = n;
2369                 (*count)++;
2370                 read_next_command();
2371         }
2372         return list;
2375 static void parse_new_commit(void)
2377         static struct strbuf msg = STRBUF_INIT;
2378         struct branch *b;
2379         char *sp;
2380         char *author = NULL;
2381         char *committer = NULL;
2382         struct hash_list *merge_list = NULL;
2383         unsigned int merge_count;
2384         unsigned char prev_fanout, new_fanout;
2386         /* Obtain the branch name from the rest of our command */
2387         sp = strchr(command_buf.buf, ' ') + 1;
2388         b = lookup_branch(sp);
2389         if (!b)
2390                 b = new_branch(sp);
2392         read_next_command();
2393         parse_mark();
2394         if (!prefixcmp(command_buf.buf, "author ")) {
2395                 author = parse_ident(command_buf.buf + 7);
2396                 read_next_command();
2397         }
2398         if (!prefixcmp(command_buf.buf, "committer ")) {
2399                 committer = parse_ident(command_buf.buf + 10);
2400                 read_next_command();
2401         }
2402         if (!committer)
2403                 die("Expected committer but didn't get one");
2404         parse_data(&msg);
2405         read_next_command();
2406         parse_from(b);
2407         merge_list = parse_merge(&merge_count);
2409         /* ensure the branch is active/loaded */
2410         if (!b->branch_tree.tree || !max_active_branches) {
2411                 unload_one_branch();
2412                 load_branch(b);
2413         }
2415         prev_fanout = convert_num_notes_to_fanout(b->num_notes);
2417         /* file_change* */
2418         while (command_buf.len > 0) {
2419                 if (!prefixcmp(command_buf.buf, "M "))
2420                         file_change_m(b);
2421                 else if (!prefixcmp(command_buf.buf, "D "))
2422                         file_change_d(b);
2423                 else if (!prefixcmp(command_buf.buf, "R "))
2424                         file_change_cr(b, 1);
2425                 else if (!prefixcmp(command_buf.buf, "C "))
2426                         file_change_cr(b, 0);
2427                 else if (!prefixcmp(command_buf.buf, "N "))
2428                         note_change_n(b, prev_fanout);
2429                 else if (!strcmp("deleteall", command_buf.buf))
2430                         file_change_deleteall(b);
2431                 else {
2432                         unread_command_buf = 1;
2433                         break;
2434                 }
2435                 if (read_next_command() == EOF)
2436                         break;
2437         }
2439         new_fanout = convert_num_notes_to_fanout(b->num_notes);
2440         if (new_fanout != prev_fanout)
2441                 b->num_notes = change_note_fanout(&b->branch_tree, new_fanout);
2443         /* build the tree and the commit */
2444         store_tree(&b->branch_tree);
2445         hashcpy(b->branch_tree.versions[0].sha1,
2446                 b->branch_tree.versions[1].sha1);
2448         strbuf_reset(&new_data);
2449         strbuf_addf(&new_data, "tree %s\n",
2450                 sha1_to_hex(b->branch_tree.versions[1].sha1));
2451         if (!is_null_sha1(b->sha1))
2452                 strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(b->sha1));
2453         while (merge_list) {
2454                 struct hash_list *next = merge_list->next;
2455                 strbuf_addf(&new_data, "parent %s\n", sha1_to_hex(merge_list->sha1));
2456                 free(merge_list);
2457                 merge_list = next;
2458         }
2459         strbuf_addf(&new_data,
2460                 "author %s\n"
2461                 "committer %s\n"
2462                 "\n",
2463                 author ? author : committer, committer);
2464         strbuf_addbuf(&new_data, &msg);
2465         free(author);
2466         free(committer);
2468         if (!store_object(OBJ_COMMIT, &new_data, NULL, b->sha1, next_mark))
2469                 b->pack_id = pack_id;
2470         b->last_commit = object_count_by_type[OBJ_COMMIT];
2473 static void parse_new_tag(void)
2475         static struct strbuf msg = STRBUF_INIT;
2476         char *sp;
2477         const char *from;
2478         char *tagger;
2479         struct branch *s;
2480         struct tag *t;
2481         uintmax_t from_mark = 0;
2482         unsigned char sha1[20];
2483         enum object_type type;
2485         /* Obtain the new tag name from the rest of our command */
2486         sp = strchr(command_buf.buf, ' ') + 1;
2487         t = pool_alloc(sizeof(struct tag));
2488         t->next_tag = NULL;
2489         t->name = pool_strdup(sp);
2490         if (last_tag)
2491                 last_tag->next_tag = t;
2492         else
2493                 first_tag = t;
2494         last_tag = t;
2495         read_next_command();
2497         /* from ... */
2498         if (prefixcmp(command_buf.buf, "from "))
2499                 die("Expected from command, got %s", command_buf.buf);
2500         from = strchr(command_buf.buf, ' ') + 1;
2501         s = lookup_branch(from);
2502         if (s) {
2503                 hashcpy(sha1, s->sha1);
2504                 type = OBJ_COMMIT;
2505         } else if (*from == ':') {
2506                 struct object_entry *oe;
2507                 from_mark = strtoumax(from + 1, NULL, 10);
2508                 oe = find_mark(from_mark);
2509                 type = oe->type;
2510                 hashcpy(sha1, oe->sha1);
2511         } else if (!get_sha1(from, sha1)) {
2512                 unsigned long size;
2513                 char *buf;
2515                 buf = read_sha1_file(sha1, &type, &size);
2516                 if (!buf || size < 46)
2517                         die("Not a valid commit: %s", from);
2518                 free(buf);
2519         } else
2520                 die("Invalid ref name or SHA1 expression: %s", from);
2521         read_next_command();
2523         /* tagger ... */
2524         if (!prefixcmp(command_buf.buf, "tagger ")) {
2525                 tagger = parse_ident(command_buf.buf + 7);
2526                 read_next_command();
2527         } else
2528                 tagger = NULL;
2530         /* tag payload/message */
2531         parse_data(&msg);
2533         /* build the tag object */
2534         strbuf_reset(&new_data);
2536         strbuf_addf(&new_data,
2537                     "object %s\n"
2538                     "type %s\n"
2539                     "tag %s\n",
2540                     sha1_to_hex(sha1), typename(type), t->name);
2541         if (tagger)
2542                 strbuf_addf(&new_data,
2543                             "tagger %s\n", tagger);
2544         strbuf_addch(&new_data, '\n');
2545         strbuf_addbuf(&new_data, &msg);
2546         free(tagger);
2548         if (store_object(OBJ_TAG, &new_data, NULL, t->sha1, 0))
2549                 t->pack_id = MAX_PACK_ID;
2550         else
2551                 t->pack_id = pack_id;
2554 static void parse_reset_branch(void)
2556         struct branch *b;
2557         char *sp;
2559         /* Obtain the branch name from the rest of our command */
2560         sp = strchr(command_buf.buf, ' ') + 1;
2561         b = lookup_branch(sp);
2562         if (b) {
2563                 hashclr(b->sha1);
2564                 hashclr(b->branch_tree.versions[0].sha1);
2565                 hashclr(b->branch_tree.versions[1].sha1);
2566                 if (b->branch_tree.tree) {
2567                         release_tree_content_recursive(b->branch_tree.tree);
2568                         b->branch_tree.tree = NULL;
2569                 }
2570         }
2571         else
2572                 b = new_branch(sp);
2573         read_next_command();
2574         parse_from(b);
2575         if (command_buf.len > 0)
2576                 unread_command_buf = 1;
2579 static void parse_checkpoint(void)
2581         if (object_count) {
2582                 cycle_packfile();
2583                 dump_branches();
2584                 dump_tags();
2585                 dump_marks();
2586         }
2587         skip_optional_lf();
2590 static void parse_progress(void)
2592         fwrite(command_buf.buf, 1, command_buf.len, stdout);
2593         fputc('\n', stdout);
2594         fflush(stdout);
2595         skip_optional_lf();
2598 static char* make_fast_import_path(const char *path)
2600         struct strbuf abs_path = STRBUF_INIT;
2602         if (!relative_marks_paths || is_absolute_path(path))
2603                 return xstrdup(path);
2604         strbuf_addf(&abs_path, "%s/info/fast-import/%s", get_git_dir(), path);
2605         return strbuf_detach(&abs_path, NULL);
2608 static void option_import_marks(const char *marks, int from_stream)
2610         if (import_marks_file) {
2611                 if (from_stream)
2612                         die("Only one import-marks command allowed per stream");
2614                 /* read previous mark file */
2615                 if(!import_marks_file_from_stream)
2616                         read_marks();
2617         }
2619         import_marks_file = make_fast_import_path(marks);
2620         import_marks_file_from_stream = from_stream;
2623 static void option_date_format(const char *fmt)
2625         if (!strcmp(fmt, "raw"))
2626                 whenspec = WHENSPEC_RAW;
2627         else if (!strcmp(fmt, "rfc2822"))
2628                 whenspec = WHENSPEC_RFC2822;
2629         else if (!strcmp(fmt, "now"))
2630                 whenspec = WHENSPEC_NOW;
2631         else
2632                 die("unknown --date-format argument %s", fmt);
2635 static void option_max_pack_size(const char *packsize)
2637         max_packsize = strtoumax(packsize, NULL, 0) * 1024 * 1024;
2640 static void option_depth(const char *depth)
2642         max_depth = strtoul(depth, NULL, 0);
2643         if (max_depth > MAX_DEPTH)
2644                 die("--depth cannot exceed %u", MAX_DEPTH);
2647 static void option_active_branches(const char *branches)
2649         max_active_branches = strtoul(branches, NULL, 0);
2652 static void option_export_marks(const char *marks)
2654         export_marks_file = make_fast_import_path(marks);
2657 static void option_export_pack_edges(const char *edges)
2659         if (pack_edges)
2660                 fclose(pack_edges);
2661         pack_edges = fopen(edges, "a");
2662         if (!pack_edges)
2663                 die_errno("Cannot open '%s'", edges);
2666 static int parse_one_option(const char *option)
2668         if (!prefixcmp(option, "max-pack-size=")) {
2669                 option_max_pack_size(option + 14);
2670         } else if (!prefixcmp(option, "depth=")) {
2671                 option_depth(option + 6);
2672         } else if (!prefixcmp(option, "active-branches=")) {
2673                 option_active_branches(option + 16);
2674         } else if (!prefixcmp(option, "export-pack-edges=")) {
2675                 option_export_pack_edges(option + 18);
2676         } else if (!prefixcmp(option, "quiet")) {
2677                 show_stats = 0;
2678         } else if (!prefixcmp(option, "stats")) {
2679                 show_stats = 1;
2680         } else {
2681                 return 0;
2682         }
2684         return 1;
2687 static int parse_one_feature(const char *feature, int from_stream)
2689         if (!prefixcmp(feature, "date-format=")) {
2690                 option_date_format(feature + 12);
2691         } else if (!prefixcmp(feature, "import-marks=")) {
2692                 option_import_marks(feature + 13, from_stream);
2693         } else if (!prefixcmp(feature, "export-marks=")) {
2694                 option_export_marks(feature + 13);
2695         } else if (!prefixcmp(feature, "relative-marks")) {
2696                 relative_marks_paths = 1;
2697         } else if (!prefixcmp(feature, "no-relative-marks")) {
2698                 relative_marks_paths = 0;
2699         } else if (!prefixcmp(feature, "force")) {
2700                 force_update = 1;
2701         } else {
2702                 return 0;
2703         }
2705         return 1;
2708 static void parse_feature(void)
2710         char *feature = command_buf.buf + 8;
2712         if (seen_data_command)
2713                 die("Got feature command '%s' after data command", feature);
2715         if (parse_one_feature(feature, 1))
2716                 return;
2718         die("This version of fast-import does not support feature %s.", feature);
2721 static void parse_option(void)
2723         char *option = command_buf.buf + 11;
2725         if (seen_data_command)
2726                 die("Got option command '%s' after data command", option);
2728         if (parse_one_option(option))
2729                 return;
2731         die("This version of fast-import does not support option: %s", option);
2734 static int git_pack_config(const char *k, const char *v, void *cb)
2736         if (!strcmp(k, "pack.depth")) {
2737                 max_depth = git_config_int(k, v);
2738                 if (max_depth > MAX_DEPTH)
2739                         max_depth = MAX_DEPTH;
2740                 return 0;
2741         }
2742         if (!strcmp(k, "pack.compression")) {
2743                 int level = git_config_int(k, v);
2744                 if (level == -1)
2745                         level = Z_DEFAULT_COMPRESSION;
2746                 else if (level < 0 || level > Z_BEST_COMPRESSION)
2747                         die("bad pack compression level %d", level);
2748                 pack_compression_level = level;
2749                 pack_compression_seen = 1;
2750                 return 0;
2751         }
2752         return git_default_config(k, v, cb);
2755 static const char fast_import_usage[] =
2756 "git fast-import [--date-format=f] [--max-pack-size=n] [--depth=n] [--active-branches=n] [--export-marks=marks.file]";
2758 static void parse_argv(void)
2760         unsigned int i;
2762         for (i = 1; i < global_argc; i++) {
2763                 const char *a = global_argv[i];
2765                 if (*a != '-' || !strcmp(a, "--"))
2766                         break;
2768                 if (parse_one_option(a + 2))
2769                         continue;
2771                 if (parse_one_feature(a + 2, 0))
2772                         continue;
2774                 die("unknown option %s", a);
2775         }
2776         if (i != global_argc)
2777                 usage(fast_import_usage);
2779         seen_data_command = 1;
2780         if (import_marks_file)
2781                 read_marks();
2784 int main(int argc, const char **argv)
2786         unsigned int i;
2788         git_extract_argv0_path(argv[0]);
2790         if (argc == 2 && !strcmp(argv[1], "-h"))
2791                 usage(fast_import_usage);
2793         setup_git_directory();
2794         git_config(git_pack_config, NULL);
2795         if (!pack_compression_seen && core_compression_seen)
2796                 pack_compression_level = core_compression_level;
2798         alloc_objects(object_entry_alloc);
2799         strbuf_init(&command_buf, 0);
2800         atom_table = xcalloc(atom_table_sz, sizeof(struct atom_str*));
2801         branch_table = xcalloc(branch_table_sz, sizeof(struct branch*));
2802         avail_tree_table = xcalloc(avail_tree_table_sz, sizeof(struct avail_tree_content*));
2803         marks = pool_calloc(1, sizeof(struct mark_set));
2805         global_argc = argc;
2806         global_argv = argv;
2808         rc_free = pool_alloc(cmd_save * sizeof(*rc_free));
2809         for (i = 0; i < (cmd_save - 1); i++)
2810                 rc_free[i].next = &rc_free[i + 1];
2811         rc_free[cmd_save - 1].next = NULL;
2813         prepare_packed_git();
2814         start_packfile();
2815         set_die_routine(die_nicely);
2816         while (read_next_command() != EOF) {
2817                 if (!strcmp("blob", command_buf.buf))
2818                         parse_new_blob();
2819                 else if (!prefixcmp(command_buf.buf, "commit "))
2820                         parse_new_commit();
2821                 else if (!prefixcmp(command_buf.buf, "tag "))
2822                         parse_new_tag();
2823                 else if (!prefixcmp(command_buf.buf, "reset "))
2824                         parse_reset_branch();
2825                 else if (!strcmp("checkpoint", command_buf.buf))
2826                         parse_checkpoint();
2827                 else if (!prefixcmp(command_buf.buf, "progress "))
2828                         parse_progress();
2829                 else if (!prefixcmp(command_buf.buf, "feature "))
2830                         parse_feature();
2831                 else if (!prefixcmp(command_buf.buf, "option git "))
2832                         parse_option();
2833                 else if (!prefixcmp(command_buf.buf, "option "))
2834                         /* ignore non-git options*/;
2835                 else
2836                         die("Unsupported command: %s", command_buf.buf);
2837         }
2839         /* argv hasn't been parsed yet, do so */
2840         if (!seen_data_command)
2841                 parse_argv();
2843         end_packfile();
2845         dump_branches();
2846         dump_tags();
2847         unkeep_all_packs();
2848         dump_marks();
2850         if (pack_edges)
2851                 fclose(pack_edges);
2853         if (show_stats) {
2854                 uintmax_t total_count = 0, duplicate_count = 0;
2855                 for (i = 0; i < ARRAY_SIZE(object_count_by_type); i++)
2856                         total_count += object_count_by_type[i];
2857                 for (i = 0; i < ARRAY_SIZE(duplicate_count_by_type); i++)
2858                         duplicate_count += duplicate_count_by_type[i];
2860                 fprintf(stderr, "%s statistics:\n", argv[0]);
2861                 fprintf(stderr, "---------------------------------------------------------------------\n");
2862                 fprintf(stderr, "Alloc'd objects: %10" PRIuMAX "\n", alloc_count);
2863                 fprintf(stderr, "Total objects:   %10" PRIuMAX " (%10" PRIuMAX " duplicates                  )\n", total_count, duplicate_count);
2864                 fprintf(stderr, "      blobs  :   %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_BLOB], duplicate_count_by_type[OBJ_BLOB], delta_count_by_type[OBJ_BLOB]);
2865                 fprintf(stderr, "      trees  :   %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_TREE], duplicate_count_by_type[OBJ_TREE], delta_count_by_type[OBJ_TREE]);
2866                 fprintf(stderr, "      commits:   %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_COMMIT], duplicate_count_by_type[OBJ_COMMIT], delta_count_by_type[OBJ_COMMIT]);
2867                 fprintf(stderr, "      tags   :   %10" PRIuMAX " (%10" PRIuMAX " duplicates %10" PRIuMAX " deltas)\n", object_count_by_type[OBJ_TAG], duplicate_count_by_type[OBJ_TAG], delta_count_by_type[OBJ_TAG]);
2868                 fprintf(stderr, "Total branches:  %10lu (%10lu loads     )\n", branch_count, branch_load_count);
2869                 fprintf(stderr, "      marks:     %10" PRIuMAX " (%10" PRIuMAX " unique    )\n", (((uintmax_t)1) << marks->shift) * 1024, marks_set_count);
2870                 fprintf(stderr, "      atoms:     %10u\n", atom_cnt);
2871                 fprintf(stderr, "Memory total:    %10" PRIuMAX " KiB\n", (total_allocd + alloc_count*sizeof(struct object_entry))/1024);
2872                 fprintf(stderr, "       pools:    %10lu KiB\n", (unsigned long)(total_allocd/1024));
2873                 fprintf(stderr, "     objects:    %10" PRIuMAX " KiB\n", (alloc_count*sizeof(struct object_entry))/1024);
2874                 fprintf(stderr, "---------------------------------------------------------------------\n");
2875                 pack_report();
2876                 fprintf(stderr, "---------------------------------------------------------------------\n");
2877                 fprintf(stderr, "\n");
2878         }
2880         return failure ? 1 : 0;