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Commit | Line | Data |
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a1bbc6c0 SB |
1 | #include "builtin.h" |
2 | #include "cache.h" | |
3 | #include "dir.h" | |
4 | #include "parse-options.h" | |
5 | #include "run-command.h" | |
6 | #include "sigchain.h" | |
7 | #include "strbuf.h" | |
8 | #include "string-list.h" | |
9 | #include "argv-array.h" | |
10 | ||
11 | static int delta_base_offset = 1; | |
ee34a2be | 12 | static int pack_kept_objects = -1; |
2bed2d47 | 13 | static int write_bitmaps; |
a1bbc6c0 SB |
14 | static char *packdir, *packtmp; |
15 | ||
16 | static const char *const git_repack_usage[] = { | |
9c9b4f2f | 17 | N_("git repack [<options>]"), |
a1bbc6c0 SB |
18 | NULL |
19 | }; | |
20 | ||
1c409a70 DT |
21 | static const char incremental_bitmap_conflict_error[] = N_( |
22 | "Incremental repacks are incompatible with bitmap indexes. Use\n" | |
23 | "--no-write-bitmap-index or disable the pack.writebitmaps configuration." | |
24 | ); | |
25 | ||
26 | ||
a1bbc6c0 SB |
27 | static int repack_config(const char *var, const char *value, void *cb) |
28 | { | |
29 | if (!strcmp(var, "repack.usedeltabaseoffset")) { | |
30 | delta_base_offset = git_config_bool(var, value); | |
31 | return 0; | |
32 | } | |
ee34a2be JK |
33 | if (!strcmp(var, "repack.packkeptobjects")) { |
34 | pack_kept_objects = git_config_bool(var, value); | |
35 | return 0; | |
36 | } | |
71d76cb4 JK |
37 | if (!strcmp(var, "repack.writebitmaps") || |
38 | !strcmp(var, "pack.writebitmaps")) { | |
d078d85b | 39 | write_bitmaps = git_config_bool(var, value); |
3198b89f JK |
40 | return 0; |
41 | } | |
a1bbc6c0 SB |
42 | return git_default_config(var, value, cb); |
43 | } | |
44 | ||
45 | /* | |
46 | * Remove temporary $GIT_OBJECT_DIRECTORY/pack/.tmp-$$-pack-* files. | |
47 | */ | |
48 | static void remove_temporary_files(void) | |
49 | { | |
50 | struct strbuf buf = STRBUF_INIT; | |
51 | size_t dirlen, prefixlen; | |
52 | DIR *dir; | |
53 | struct dirent *e; | |
54 | ||
55 | dir = opendir(packdir); | |
56 | if (!dir) | |
57 | return; | |
58 | ||
59 | /* Point at the slash at the end of ".../objects/pack/" */ | |
60 | dirlen = strlen(packdir) + 1; | |
61 | strbuf_addstr(&buf, packtmp); | |
62 | /* Hold the length of ".tmp-%d-pack-" */ | |
63 | prefixlen = buf.len - dirlen; | |
64 | ||
65 | while ((e = readdir(dir))) { | |
66 | if (strncmp(e->d_name, buf.buf + dirlen, prefixlen)) | |
67 | continue; | |
68 | strbuf_setlen(&buf, dirlen); | |
69 | strbuf_addstr(&buf, e->d_name); | |
70 | unlink(buf.buf); | |
71 | } | |
72 | closedir(dir); | |
73 | strbuf_release(&buf); | |
74 | } | |
75 | ||
76 | static void remove_pack_on_signal(int signo) | |
77 | { | |
78 | remove_temporary_files(); | |
79 | sigchain_pop(signo); | |
80 | raise(signo); | |
81 | } | |
82 | ||
83 | /* | |
84 | * Adds all packs hex strings to the fname list, which do not | |
85 | * have a corresponding .keep file. | |
86 | */ | |
87 | static void get_non_kept_pack_filenames(struct string_list *fname_list) | |
88 | { | |
89 | DIR *dir; | |
90 | struct dirent *e; | |
91 | char *fname; | |
a1bbc6c0 SB |
92 | |
93 | if (!(dir = opendir(packdir))) | |
94 | return; | |
95 | ||
96 | while ((e = readdir(dir)) != NULL) { | |
26936bfd JK |
97 | size_t len; |
98 | if (!strip_suffix(e->d_name, ".pack", &len)) | |
a1bbc6c0 SB |
99 | continue; |
100 | ||
a1bbc6c0 SB |
101 | fname = xmemdupz(e->d_name, len); |
102 | ||
103 | if (!file_exists(mkpath("%s/%s.keep", packdir, fname))) | |
104 | string_list_append_nodup(fname_list, fname); | |
105 | else | |
106 | free(fname); | |
107 | } | |
108 | closedir(dir); | |
109 | } | |
110 | ||
111 | static void remove_redundant_pack(const char *dir_name, const char *base_name) | |
112 | { | |
5cf2741c | 113 | const char *exts[] = {".pack", ".idx", ".keep", ".bitmap"}; |
a1bbc6c0 SB |
114 | int i; |
115 | struct strbuf buf = STRBUF_INIT; | |
116 | size_t plen; | |
117 | ||
118 | strbuf_addf(&buf, "%s/%s", dir_name, base_name); | |
119 | plen = buf.len; | |
120 | ||
121 | for (i = 0; i < ARRAY_SIZE(exts); i++) { | |
122 | strbuf_setlen(&buf, plen); | |
123 | strbuf_addstr(&buf, exts[i]); | |
124 | unlink(buf.buf); | |
125 | } | |
126 | strbuf_release(&buf); | |
127 | } | |
128 | ||
129 | #define ALL_INTO_ONE 1 | |
130 | #define LOOSEN_UNREACHABLE 2 | |
131 | ||
132 | int cmd_repack(int argc, const char **argv, const char *prefix) | |
133 | { | |
42a02d85 JK |
134 | struct { |
135 | const char *name; | |
b77fcd1e | 136 | unsigned optional:1; |
42a02d85 JK |
137 | } exts[] = { |
138 | {".pack"}, | |
139 | {".idx"}, | |
5cf2741c | 140 | {".bitmap", 1}, |
42a02d85 | 141 | }; |
d3180279 | 142 | struct child_process cmd = CHILD_PROCESS_INIT; |
a1bbc6c0 | 143 | struct string_list_item *item; |
a1bbc6c0 SB |
144 | struct string_list names = STRING_LIST_INIT_DUP; |
145 | struct string_list rollback = STRING_LIST_INIT_NODUP; | |
146 | struct string_list existing_packs = STRING_LIST_INIT_DUP; | |
147 | struct strbuf line = STRBUF_INIT; | |
3e7b066e | 148 | int ext, ret, failed; |
a1bbc6c0 SB |
149 | FILE *out; |
150 | ||
151 | /* variables to be filled by option parsing */ | |
152 | int pack_everything = 0; | |
153 | int delete_redundant = 0; | |
aa8bd519 | 154 | const char *unpack_unreachable = NULL; |
905f27b8 | 155 | int keep_unreachable = 0; |
b861e235 JK |
156 | const char *window = NULL, *window_memory = NULL; |
157 | const char *depth = NULL; | |
158 | const char *max_pack_size = NULL; | |
a1bbc6c0 SB |
159 | int no_reuse_delta = 0, no_reuse_object = 0; |
160 | int no_update_server_info = 0; | |
161 | int quiet = 0; | |
162 | int local = 0; | |
163 | ||
164 | struct option builtin_repack_options[] = { | |
165 | OPT_BIT('a', NULL, &pack_everything, | |
166 | N_("pack everything in a single pack"), ALL_INTO_ONE), | |
167 | OPT_BIT('A', NULL, &pack_everything, | |
168 | N_("same as -a, and turn unreachable objects loose"), | |
169 | LOOSEN_UNREACHABLE | ALL_INTO_ONE), | |
170 | OPT_BOOL('d', NULL, &delete_redundant, | |
171 | N_("remove redundant packs, and run git-prune-packed")), | |
172 | OPT_BOOL('f', NULL, &no_reuse_delta, | |
173 | N_("pass --no-reuse-delta to git-pack-objects")), | |
174 | OPT_BOOL('F', NULL, &no_reuse_object, | |
175 | N_("pass --no-reuse-object to git-pack-objects")), | |
176 | OPT_BOOL('n', NULL, &no_update_server_info, | |
177 | N_("do not run git-update-server-info")), | |
178 | OPT__QUIET(&quiet, N_("be quiet")), | |
179 | OPT_BOOL('l', "local", &local, | |
180 | N_("pass --local to git-pack-objects")), | |
d078d85b | 181 | OPT_BOOL('b', "write-bitmap-index", &write_bitmaps, |
5cf2741c | 182 | N_("write bitmap index")), |
a1bbc6c0 SB |
183 | OPT_STRING(0, "unpack-unreachable", &unpack_unreachable, N_("approxidate"), |
184 | N_("with -A, do not loosen objects older than this")), | |
905f27b8 JK |
185 | OPT_BOOL('k', "keep-unreachable", &keep_unreachable, |
186 | N_("with -a, repack unreachable objects")), | |
b861e235 | 187 | OPT_STRING(0, "window", &window, N_("n"), |
a1bbc6c0 | 188 | N_("size of the window used for delta compression")), |
b861e235 | 189 | OPT_STRING(0, "window-memory", &window_memory, N_("bytes"), |
a1bbc6c0 | 190 | N_("same as the above, but limit memory size instead of entries count")), |
b861e235 | 191 | OPT_STRING(0, "depth", &depth, N_("n"), |
a1bbc6c0 | 192 | N_("limits the maximum delta depth")), |
b861e235 | 193 | OPT_STRING(0, "max-pack-size", &max_pack_size, N_("bytes"), |
a1bbc6c0 | 194 | N_("maximum size of each packfile")), |
ee34a2be JK |
195 | OPT_BOOL(0, "pack-kept-objects", &pack_kept_objects, |
196 | N_("repack objects in packs marked with .keep")), | |
a1bbc6c0 SB |
197 | OPT_END() |
198 | }; | |
199 | ||
200 | git_config(repack_config, NULL); | |
201 | ||
202 | argc = parse_options(argc, argv, prefix, builtin_repack_options, | |
203 | git_repack_usage, 0); | |
204 | ||
067fbd41 JK |
205 | if (delete_redundant && repository_format_precious_objects) |
206 | die(_("cannot delete packs in a precious-objects repo")); | |
207 | ||
905f27b8 JK |
208 | if (keep_unreachable && |
209 | (unpack_unreachable || (pack_everything & LOOSEN_UNREACHABLE))) | |
210 | die(_("--keep-unreachable and -A are incompatible")); | |
211 | ||
ee34a2be | 212 | if (pack_kept_objects < 0) |
2bed2d47 | 213 | pack_kept_objects = write_bitmaps; |
ee34a2be | 214 | |
1c409a70 DT |
215 | if (write_bitmaps && !(pack_everything & ALL_INTO_ONE)) |
216 | die(_(incremental_bitmap_conflict_error)); | |
217 | ||
a1bbc6c0 SB |
218 | packdir = mkpathdup("%s/pack", get_object_directory()); |
219 | packtmp = mkpathdup("%s/.tmp-%d-pack", packdir, (int)getpid()); | |
220 | ||
221 | sigchain_push_common(remove_pack_on_signal); | |
222 | ||
a2bae2dc RS |
223 | argv_array_push(&cmd.args, "pack-objects"); |
224 | argv_array_push(&cmd.args, "--keep-true-parents"); | |
ee34a2be | 225 | if (!pack_kept_objects) |
a2bae2dc RS |
226 | argv_array_push(&cmd.args, "--honor-pack-keep"); |
227 | argv_array_push(&cmd.args, "--non-empty"); | |
228 | argv_array_push(&cmd.args, "--all"); | |
229 | argv_array_push(&cmd.args, "--reflog"); | |
230 | argv_array_push(&cmd.args, "--indexed-objects"); | |
a1bbc6c0 | 231 | if (window) |
a2bae2dc | 232 | argv_array_pushf(&cmd.args, "--window=%s", window); |
a1bbc6c0 | 233 | if (window_memory) |
a2bae2dc | 234 | argv_array_pushf(&cmd.args, "--window-memory=%s", window_memory); |
a1bbc6c0 | 235 | if (depth) |
a2bae2dc | 236 | argv_array_pushf(&cmd.args, "--depth=%s", depth); |
a1bbc6c0 | 237 | if (max_pack_size) |
a2bae2dc | 238 | argv_array_pushf(&cmd.args, "--max-pack-size=%s", max_pack_size); |
a1bbc6c0 | 239 | if (no_reuse_delta) |
a2bae2dc | 240 | argv_array_pushf(&cmd.args, "--no-reuse-delta"); |
a1bbc6c0 | 241 | if (no_reuse_object) |
a2bae2dc | 242 | argv_array_pushf(&cmd.args, "--no-reuse-object"); |
2bed2d47 | 243 | if (write_bitmaps) |
a2bae2dc | 244 | argv_array_push(&cmd.args, "--write-bitmap-index"); |
a1bbc6c0 SB |
245 | |
246 | if (pack_everything & ALL_INTO_ONE) { | |
247 | get_non_kept_pack_filenames(&existing_packs); | |
248 | ||
249 | if (existing_packs.nr && delete_redundant) { | |
8d422993 | 250 | if (unpack_unreachable) { |
a2bae2dc | 251 | argv_array_pushf(&cmd.args, |
a1bbc6c0 SB |
252 | "--unpack-unreachable=%s", |
253 | unpack_unreachable); | |
8d422993 JK |
254 | argv_array_push(&cmd.env_array, "GIT_REF_PARANOIA=1"); |
255 | } else if (pack_everything & LOOSEN_UNREACHABLE) { | |
a2bae2dc | 256 | argv_array_push(&cmd.args, |
a1bbc6c0 | 257 | "--unpack-unreachable"); |
905f27b8 JK |
258 | } else if (keep_unreachable) { |
259 | argv_array_push(&cmd.args, "--keep-unreachable"); | |
e26a8c47 | 260 | argv_array_push(&cmd.args, "--pack-loose-unreachable"); |
8d422993 JK |
261 | } else { |
262 | argv_array_push(&cmd.env_array, "GIT_REF_PARANOIA=1"); | |
263 | } | |
a1bbc6c0 SB |
264 | } |
265 | } else { | |
a2bae2dc RS |
266 | argv_array_push(&cmd.args, "--unpacked"); |
267 | argv_array_push(&cmd.args, "--incremental"); | |
a1bbc6c0 SB |
268 | } |
269 | ||
270 | if (local) | |
a2bae2dc | 271 | argv_array_push(&cmd.args, "--local"); |
a1bbc6c0 | 272 | if (quiet) |
a2bae2dc | 273 | argv_array_push(&cmd.args, "--quiet"); |
a1bbc6c0 | 274 | if (delta_base_offset) |
a2bae2dc | 275 | argv_array_push(&cmd.args, "--delta-base-offset"); |
a1bbc6c0 | 276 | |
a2bae2dc | 277 | argv_array_push(&cmd.args, packtmp); |
a1bbc6c0 | 278 | |
a1bbc6c0 SB |
279 | cmd.git_cmd = 1; |
280 | cmd.out = -1; | |
281 | cmd.no_stdin = 1; | |
282 | ||
283 | ret = start_command(&cmd); | |
284 | if (ret) | |
ffc9329f | 285 | return ret; |
a1bbc6c0 | 286 | |
a1bbc6c0 | 287 | out = xfdopen(cmd.out, "r"); |
8f309aeb | 288 | while (strbuf_getline_lf(&line, out) != EOF) { |
a1bbc6c0 SB |
289 | if (line.len != 40) |
290 | die("repack: Expecting 40 character sha1 lines only from pack-objects."); | |
291 | string_list_append(&names, line.buf); | |
a1bbc6c0 SB |
292 | } |
293 | fclose(out); | |
294 | ret = finish_command(&cmd); | |
295 | if (ret) | |
ffc9329f | 296 | return ret; |
a1bbc6c0 | 297 | |
3e7b066e | 298 | if (!names.nr && !quiet) |
a1bbc6c0 SB |
299 | printf("Nothing new to pack.\n"); |
300 | ||
301 | /* | |
302 | * Ok we have prepared all new packfiles. | |
303 | * First see if there are packs of the same name and if so | |
304 | * if we can move them out of the way (this can happen if we | |
305 | * repacked immediately after packing fully. | |
306 | */ | |
307 | failed = 0; | |
308 | for_each_string_list_item(item, &names) { | |
b328c216 | 309 | for (ext = 0; ext < ARRAY_SIZE(exts); ext++) { |
e3cf2303 | 310 | char *fname, *fname_old; |
9d7fbfd2 | 311 | fname = mkpathdup("%s/pack-%s%s", packdir, |
42a02d85 | 312 | item->string, exts[ext].name); |
a1bbc6c0 SB |
313 | if (!file_exists(fname)) { |
314 | free(fname); | |
315 | continue; | |
316 | } | |
317 | ||
e3cf2303 | 318 | fname_old = mkpathdup("%s/old-%s%s", packdir, |
42a02d85 | 319 | item->string, exts[ext].name); |
a1bbc6c0 SB |
320 | if (file_exists(fname_old)) |
321 | if (unlink(fname_old)) | |
322 | failed = 1; | |
323 | ||
324 | if (!failed && rename(fname, fname_old)) { | |
325 | free(fname); | |
e3cf2303 | 326 | free(fname_old); |
a1bbc6c0 SB |
327 | failed = 1; |
328 | break; | |
329 | } else { | |
330 | string_list_append(&rollback, fname); | |
e3cf2303 | 331 | free(fname_old); |
a1bbc6c0 SB |
332 | } |
333 | } | |
334 | if (failed) | |
335 | break; | |
336 | } | |
337 | if (failed) { | |
338 | struct string_list rollback_failure = STRING_LIST_INIT_DUP; | |
339 | for_each_string_list_item(item, &rollback) { | |
e3cf2303 | 340 | char *fname, *fname_old; |
a1bbc6c0 | 341 | fname = mkpathdup("%s/%s", packdir, item->string); |
e3cf2303 | 342 | fname_old = mkpathdup("%s/old-%s", packdir, item->string); |
a1bbc6c0 SB |
343 | if (rename(fname_old, fname)) |
344 | string_list_append(&rollback_failure, fname); | |
345 | free(fname); | |
e3cf2303 | 346 | free(fname_old); |
a1bbc6c0 SB |
347 | } |
348 | ||
349 | if (rollback_failure.nr) { | |
350 | int i; | |
351 | fprintf(stderr, | |
352 | "WARNING: Some packs in use have been renamed by\n" | |
353 | "WARNING: prefixing old- to their name, in order to\n" | |
354 | "WARNING: replace them with the new version of the\n" | |
355 | "WARNING: file. But the operation failed, and the\n" | |
356 | "WARNING: attempt to rename them back to their\n" | |
357 | "WARNING: original names also failed.\n" | |
358 | "WARNING: Please rename them in %s manually:\n", packdir); | |
359 | for (i = 0; i < rollback_failure.nr; i++) | |
360 | fprintf(stderr, "WARNING: old-%s -> %s\n", | |
361 | rollback_failure.items[i].string, | |
362 | rollback_failure.items[i].string); | |
363 | } | |
364 | exit(1); | |
365 | } | |
366 | ||
367 | /* Now the ones with the same name are out of the way... */ | |
368 | for_each_string_list_item(item, &names) { | |
b328c216 | 369 | for (ext = 0; ext < ARRAY_SIZE(exts); ext++) { |
a1bbc6c0 SB |
370 | char *fname, *fname_old; |
371 | struct stat statbuffer; | |
b77fcd1e | 372 | int exists = 0; |
a1bbc6c0 | 373 | fname = mkpathdup("%s/pack-%s%s", |
42a02d85 | 374 | packdir, item->string, exts[ext].name); |
a1bbc6c0 | 375 | fname_old = mkpathdup("%s-%s%s", |
42a02d85 | 376 | packtmp, item->string, exts[ext].name); |
a1bbc6c0 SB |
377 | if (!stat(fname_old, &statbuffer)) { |
378 | statbuffer.st_mode &= ~(S_IWUSR | S_IWGRP | S_IWOTH); | |
379 | chmod(fname_old, statbuffer.st_mode); | |
b77fcd1e JK |
380 | exists = 1; |
381 | } | |
382 | if (exists || !exts[ext].optional) { | |
383 | if (rename(fname_old, fname)) | |
384 | die_errno(_("renaming '%s' failed"), fname_old); | |
a1bbc6c0 | 385 | } |
a1bbc6c0 SB |
386 | free(fname); |
387 | free(fname_old); | |
388 | } | |
389 | } | |
390 | ||
391 | /* Remove the "old-" files */ | |
392 | for_each_string_list_item(item, &names) { | |
b328c216 | 393 | for (ext = 0; ext < ARRAY_SIZE(exts); ext++) { |
e3cf2303 JK |
394 | char *fname; |
395 | fname = mkpathdup("%s/old-%s%s", | |
396 | packdir, | |
397 | item->string, | |
398 | exts[ext].name); | |
0b63c6a5 | 399 | if (remove_path(fname)) |
e923a8ab | 400 | warning(_("failed to remove '%s'"), fname); |
e3cf2303 | 401 | free(fname); |
a1bbc6c0 SB |
402 | } |
403 | } | |
404 | ||
405 | /* End of pack replacement. */ | |
406 | ||
407 | if (delete_redundant) { | |
4489a480 | 408 | int opts = 0; |
3383e199 | 409 | string_list_sort(&names); |
a1bbc6c0 SB |
410 | for_each_string_list_item(item, &existing_packs) { |
411 | char *sha1; | |
412 | size_t len = strlen(item->string); | |
413 | if (len < 40) | |
414 | continue; | |
415 | sha1 = item->string + len - 40; | |
416 | if (!string_list_has_string(&names, sha1)) | |
417 | remove_redundant_pack(packdir, item->string); | |
418 | } | |
4489a480 RS |
419 | if (!quiet && isatty(2)) |
420 | opts |= PRUNE_PACKED_VERBOSE; | |
421 | prune_packed_objects(opts); | |
a1bbc6c0 SB |
422 | } |
423 | ||
4489a480 RS |
424 | if (!no_update_server_info) |
425 | update_server_info(0); | |
a1bbc6c0 SB |
426 | remove_temporary_files(); |
427 | string_list_clear(&names, 0); | |
428 | string_list_clear(&rollback, 0); | |
429 | string_list_clear(&existing_packs, 0); | |
430 | strbuf_release(&line); | |
431 | ||
432 | return 0; | |
433 | } |