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