Merge branch 'jc/maint-combined-diff-work-tree'
[git] / builtin / clone.c
1 /*
2  * Builtin "git clone"
3  *
4  * Copyright (c) 2007 Kristian Høgsberg <krh@redhat.com>,
5  *               2008 Daniel Barkalow <barkalow@iabervon.org>
6  * Based on git-commit.sh by Junio C Hamano and Linus Torvalds
7  *
8  * Clone a repository into a different directory that does not yet exist.
9  */
10
11 #include "builtin.h"
12 #include "parse-options.h"
13 #include "fetch-pack.h"
14 #include "refs.h"
15 #include "tree.h"
16 #include "tree-walk.h"
17 #include "unpack-trees.h"
18 #include "transport.h"
19 #include "strbuf.h"
20 #include "dir.h"
21 #include "pack-refs.h"
22 #include "sigchain.h"
23 #include "branch.h"
24 #include "remote.h"
25 #include "run-command.h"
26
27 /*
28  * Overall FIXMEs:
29  *  - respect DB_ENVIRONMENT for .git/objects.
30  *
31  * Implementation notes:
32  *  - dropping use-separate-remote and no-separate-remote compatibility
33  *
34  */
35 static const char * const builtin_clone_usage[] = {
36         "git clone [options] [--] <repo> [<dir>]",
37         NULL
38 };
39
40 static int option_no_checkout, option_bare, option_mirror;
41 static int option_local, option_no_hardlinks, option_shared, option_recursive;
42 static char *option_template, *option_reference, *option_depth;
43 static char *option_origin = NULL;
44 static char *option_branch = NULL;
45 static const char *real_git_dir;
46 static char *option_upload_pack = "git-upload-pack";
47 static int option_verbosity;
48 static int option_progress;
49 static struct string_list option_config;
50
51 static struct option builtin_clone_options[] = {
52         OPT__VERBOSITY(&option_verbosity),
53         OPT_BOOLEAN(0, "progress", &option_progress,
54                         "force progress reporting"),
55         OPT_BOOLEAN('n', "no-checkout", &option_no_checkout,
56                     "don't create a checkout"),
57         OPT_BOOLEAN(0, "bare", &option_bare, "create a bare repository"),
58         { OPTION_BOOLEAN, 0, "naked", &option_bare, NULL,
59                 "create a bare repository",
60                 PARSE_OPT_NOARG | PARSE_OPT_HIDDEN },
61         OPT_BOOLEAN(0, "mirror", &option_mirror,
62                     "create a mirror repository (implies bare)"),
63         OPT_BOOLEAN('l', "local", &option_local,
64                     "to clone from a local repository"),
65         OPT_BOOLEAN(0, "no-hardlinks", &option_no_hardlinks,
66                     "don't use local hardlinks, always copy"),
67         OPT_BOOLEAN('s', "shared", &option_shared,
68                     "setup as shared repository"),
69         OPT_BOOLEAN(0, "recursive", &option_recursive,
70                     "initialize submodules in the clone"),
71         OPT_BOOLEAN(0, "recurse-submodules", &option_recursive,
72                     "initialize submodules in the clone"),
73         OPT_STRING(0, "template", &option_template, "template-directory",
74                    "directory from which templates will be used"),
75         OPT_STRING(0, "reference", &option_reference, "repo",
76                    "reference repository"),
77         OPT_STRING('o', "origin", &option_origin, "branch",
78                    "use <branch> instead of 'origin' to track upstream"),
79         OPT_STRING('b', "branch", &option_branch, "branch",
80                    "checkout <branch> instead of the remote's HEAD"),
81         OPT_STRING('u', "upload-pack", &option_upload_pack, "path",
82                    "path to git-upload-pack on the remote"),
83         OPT_STRING(0, "depth", &option_depth, "depth",
84                     "create a shallow clone of that depth"),
85         OPT_STRING(0, "separate-git-dir", &real_git_dir, "gitdir",
86                    "separate git dir from working tree"),
87         OPT_STRING_LIST('c', "config", &option_config, "key=value",
88                         "set config inside the new repository"),
89         OPT_END()
90 };
91
92 static const char *argv_submodule[] = {
93         "submodule", "update", "--init", "--recursive", NULL
94 };
95
96 static char *get_repo_path(const char *repo, int *is_bundle)
97 {
98         static char *suffix[] = { "/.git", ".git", "" };
99         static char *bundle_suffix[] = { ".bundle", "" };
100         struct stat st;
101         int i;
102
103         for (i = 0; i < ARRAY_SIZE(suffix); i++) {
104                 const char *path;
105                 path = mkpath("%s%s", repo, suffix[i]);
106                 if (is_directory(path)) {
107                         *is_bundle = 0;
108                         return xstrdup(absolute_path(path));
109                 }
110         }
111
112         for (i = 0; i < ARRAY_SIZE(bundle_suffix); i++) {
113                 const char *path;
114                 path = mkpath("%s%s", repo, bundle_suffix[i]);
115                 if (!stat(path, &st) && S_ISREG(st.st_mode)) {
116                         *is_bundle = 1;
117                         return xstrdup(absolute_path(path));
118                 }
119         }
120
121         return NULL;
122 }
123
124 static char *guess_dir_name(const char *repo, int is_bundle, int is_bare)
125 {
126         const char *end = repo + strlen(repo), *start;
127         char *dir;
128
129         /*
130          * Strip trailing spaces, slashes and /.git
131          */
132         while (repo < end && (is_dir_sep(end[-1]) || isspace(end[-1])))
133                 end--;
134         if (end - repo > 5 && is_dir_sep(end[-5]) &&
135             !strncmp(end - 4, ".git", 4)) {
136                 end -= 5;
137                 while (repo < end && is_dir_sep(end[-1]))
138                         end--;
139         }
140
141         /*
142          * Find last component, but be prepared that repo could have
143          * the form  "remote.example.com:foo.git", i.e. no slash
144          * in the directory part.
145          */
146         start = end;
147         while (repo < start && !is_dir_sep(start[-1]) && start[-1] != ':')
148                 start--;
149
150         /*
151          * Strip .{bundle,git}.
152          */
153         if (is_bundle) {
154                 if (end - start > 7 && !strncmp(end - 7, ".bundle", 7))
155                         end -= 7;
156         } else {
157                 if (end - start > 4 && !strncmp(end - 4, ".git", 4))
158                         end -= 4;
159         }
160
161         if (is_bare) {
162                 struct strbuf result = STRBUF_INIT;
163                 strbuf_addf(&result, "%.*s.git", (int)(end - start), start);
164                 dir = strbuf_detach(&result, NULL);
165         } else
166                 dir = xstrndup(start, end - start);
167         /*
168          * Replace sequences of 'control' characters and whitespace
169          * with one ascii space, remove leading and trailing spaces.
170          */
171         if (*dir) {
172                 char *out = dir;
173                 int prev_space = 1 /* strip leading whitespace */;
174                 for (end = dir; *end; ++end) {
175                         char ch = *end;
176                         if ((unsigned char)ch < '\x20')
177                                 ch = '\x20';
178                         if (isspace(ch)) {
179                                 if (prev_space)
180                                         continue;
181                                 prev_space = 1;
182                         } else
183                                 prev_space = 0;
184                         *out++ = ch;
185                 }
186                 *out = '\0';
187                 if (out > dir && prev_space)
188                         out[-1] = '\0';
189         }
190         return dir;
191 }
192
193 static void strip_trailing_slashes(char *dir)
194 {
195         char *end = dir + strlen(dir);
196
197         while (dir < end - 1 && is_dir_sep(end[-1]))
198                 end--;
199         *end = '\0';
200 }
201
202 static void setup_reference(const char *repo)
203 {
204         const char *ref_git;
205         char *ref_git_copy;
206
207         struct remote *remote;
208         struct transport *transport;
209         const struct ref *extra;
210
211         ref_git = real_path(option_reference);
212
213         if (is_directory(mkpath("%s/.git/objects", ref_git)))
214                 ref_git = mkpath("%s/.git", ref_git);
215         else if (!is_directory(mkpath("%s/objects", ref_git)))
216                 die(_("reference repository '%s' is not a local directory."),
217                     option_reference);
218
219         ref_git_copy = xstrdup(ref_git);
220
221         add_to_alternates_file(ref_git_copy);
222
223         remote = remote_get(ref_git_copy);
224         transport = transport_get(remote, ref_git_copy);
225         for (extra = transport_get_remote_refs(transport); extra;
226              extra = extra->next)
227                 add_extra_ref(extra->name, extra->old_sha1, 0);
228
229         transport_disconnect(transport);
230
231         free(ref_git_copy);
232 }
233
234 static void copy_or_link_directory(struct strbuf *src, struct strbuf *dest)
235 {
236         struct dirent *de;
237         struct stat buf;
238         int src_len, dest_len;
239         DIR *dir;
240
241         dir = opendir(src->buf);
242         if (!dir)
243                 die_errno(_("failed to open '%s'"), src->buf);
244
245         if (mkdir(dest->buf, 0777)) {
246                 if (errno != EEXIST)
247                         die_errno(_("failed to create directory '%s'"), dest->buf);
248                 else if (stat(dest->buf, &buf))
249                         die_errno(_("failed to stat '%s'"), dest->buf);
250                 else if (!S_ISDIR(buf.st_mode))
251                         die(_("%s exists and is not a directory"), dest->buf);
252         }
253
254         strbuf_addch(src, '/');
255         src_len = src->len;
256         strbuf_addch(dest, '/');
257         dest_len = dest->len;
258
259         while ((de = readdir(dir)) != NULL) {
260                 strbuf_setlen(src, src_len);
261                 strbuf_addstr(src, de->d_name);
262                 strbuf_setlen(dest, dest_len);
263                 strbuf_addstr(dest, de->d_name);
264                 if (stat(src->buf, &buf)) {
265                         warning (_("failed to stat %s\n"), src->buf);
266                         continue;
267                 }
268                 if (S_ISDIR(buf.st_mode)) {
269                         if (de->d_name[0] != '.')
270                                 copy_or_link_directory(src, dest);
271                         continue;
272                 }
273
274                 if (unlink(dest->buf) && errno != ENOENT)
275                         die_errno(_("failed to unlink '%s'"), dest->buf);
276                 if (!option_no_hardlinks) {
277                         if (!link(src->buf, dest->buf))
278                                 continue;
279                         if (option_local)
280                                 die_errno(_("failed to create link '%s'"), dest->buf);
281                         option_no_hardlinks = 1;
282                 }
283                 if (copy_file_with_time(dest->buf, src->buf, 0666))
284                         die_errno(_("failed to copy file to '%s'"), dest->buf);
285         }
286         closedir(dir);
287 }
288
289 static const struct ref *clone_local(const char *src_repo,
290                                      const char *dest_repo)
291 {
292         const struct ref *ret;
293         struct strbuf src = STRBUF_INIT;
294         struct strbuf dest = STRBUF_INIT;
295         struct remote *remote;
296         struct transport *transport;
297
298         if (option_shared)
299                 add_to_alternates_file(src_repo);
300         else {
301                 strbuf_addf(&src, "%s/objects", src_repo);
302                 strbuf_addf(&dest, "%s/objects", dest_repo);
303                 copy_or_link_directory(&src, &dest);
304                 strbuf_release(&src);
305                 strbuf_release(&dest);
306         }
307
308         remote = remote_get(src_repo);
309         transport = transport_get(remote, src_repo);
310         ret = transport_get_remote_refs(transport);
311         transport_disconnect(transport);
312         if (0 <= option_verbosity)
313                 printf(_("done.\n"));
314         return ret;
315 }
316
317 static const char *junk_work_tree;
318 static const char *junk_git_dir;
319 static pid_t junk_pid;
320
321 static void remove_junk(void)
322 {
323         struct strbuf sb = STRBUF_INIT;
324         if (getpid() != junk_pid)
325                 return;
326         if (junk_git_dir) {
327                 strbuf_addstr(&sb, junk_git_dir);
328                 remove_dir_recursively(&sb, 0);
329                 strbuf_reset(&sb);
330         }
331         if (junk_work_tree) {
332                 strbuf_addstr(&sb, junk_work_tree);
333                 remove_dir_recursively(&sb, 0);
334                 strbuf_reset(&sb);
335         }
336 }
337
338 static void remove_junk_on_signal(int signo)
339 {
340         remove_junk();
341         sigchain_pop(signo);
342         raise(signo);
343 }
344
345 static struct ref *wanted_peer_refs(const struct ref *refs,
346                 struct refspec *refspec)
347 {
348         struct ref *head = copy_ref(find_ref_by_name(refs, "HEAD"));
349         struct ref *local_refs = head;
350         struct ref **tail = head ? &head->next : &local_refs;
351
352         get_fetch_map(refs, refspec, &tail, 0);
353         if (!option_mirror)
354                 get_fetch_map(refs, tag_refspec, &tail, 0);
355
356         return local_refs;
357 }
358
359 static void write_remote_refs(const struct ref *local_refs)
360 {
361         const struct ref *r;
362
363         for (r = local_refs; r; r = r->next) {
364                 if (!r->peer_ref)
365                         continue;
366                 add_extra_ref(r->peer_ref->name, r->old_sha1, 0);
367         }
368
369         pack_refs(PACK_REFS_ALL);
370         clear_extra_refs();
371 }
372
373 static int write_one_config(const char *key, const char *value, void *data)
374 {
375         return git_config_set_multivar(key, value ? value : "true", "^$", 0);
376 }
377
378 static void write_config(struct string_list *config)
379 {
380         int i;
381
382         for (i = 0; i < config->nr; i++) {
383                 if (git_config_parse_parameter(config->items[i].string,
384                                                write_one_config, NULL) < 0)
385                         die("unable to write parameters to config file");
386         }
387 }
388
389 int cmd_clone(int argc, const char **argv, const char *prefix)
390 {
391         int is_bundle = 0, is_local;
392         struct stat buf;
393         const char *repo_name, *repo, *work_tree, *git_dir;
394         char *path, *dir;
395         int dest_exists;
396         const struct ref *refs, *remote_head;
397         const struct ref *remote_head_points_at;
398         const struct ref *our_head_points_at;
399         struct ref *mapped_refs;
400         struct strbuf key = STRBUF_INIT, value = STRBUF_INIT;
401         struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT;
402         struct transport *transport = NULL;
403         char *src_ref_prefix = "refs/heads/";
404         int err = 0;
405
406         struct refspec *refspec;
407         const char *fetch_pattern;
408
409         junk_pid = getpid();
410
411         packet_trace_identity("clone");
412         argc = parse_options(argc, argv, prefix, builtin_clone_options,
413                              builtin_clone_usage, 0);
414
415         if (argc > 2)
416                 usage_msg_opt(_("Too many arguments."),
417                         builtin_clone_usage, builtin_clone_options);
418
419         if (argc == 0)
420                 usage_msg_opt(_("You must specify a repository to clone."),
421                         builtin_clone_usage, builtin_clone_options);
422
423         if (option_mirror)
424                 option_bare = 1;
425
426         if (option_bare) {
427                 if (option_origin)
428                         die(_("--bare and --origin %s options are incompatible."),
429                             option_origin);
430                 option_no_checkout = 1;
431         }
432
433         if (!option_origin)
434                 option_origin = "origin";
435
436         repo_name = argv[0];
437
438         path = get_repo_path(repo_name, &is_bundle);
439         if (path)
440                 repo = xstrdup(absolute_path(repo_name));
441         else if (!strchr(repo_name, ':'))
442                 die(_("repository '%s' does not exist"), repo_name);
443         else
444                 repo = repo_name;
445         is_local = path && !is_bundle;
446         if (is_local && option_depth)
447                 warning(_("--depth is ignored in local clones; use file:// instead."));
448
449         if (argc == 2)
450                 dir = xstrdup(argv[1]);
451         else
452                 dir = guess_dir_name(repo_name, is_bundle, option_bare);
453         strip_trailing_slashes(dir);
454
455         dest_exists = !stat(dir, &buf);
456         if (dest_exists && !is_empty_dir(dir))
457                 die(_("destination path '%s' already exists and is not "
458                         "an empty directory."), dir);
459
460         strbuf_addf(&reflog_msg, "clone: from %s", repo);
461
462         if (option_bare)
463                 work_tree = NULL;
464         else {
465                 work_tree = getenv("GIT_WORK_TREE");
466                 if (work_tree && !stat(work_tree, &buf))
467                         die(_("working tree '%s' already exists."), work_tree);
468         }
469
470         if (option_bare || work_tree)
471                 git_dir = xstrdup(dir);
472         else {
473                 work_tree = dir;
474                 git_dir = xstrdup(mkpath("%s/.git", dir));
475         }
476
477         if (!option_bare) {
478                 junk_work_tree = work_tree;
479                 if (safe_create_leading_directories_const(work_tree) < 0)
480                         die_errno(_("could not create leading directories of '%s'"),
481                                   work_tree);
482                 if (!dest_exists && mkdir(work_tree, 0755))
483                         die_errno(_("could not create work tree dir '%s'."),
484                                   work_tree);
485                 set_git_work_tree(work_tree);
486         }
487         junk_git_dir = git_dir;
488         atexit(remove_junk);
489         sigchain_push_common(remove_junk_on_signal);
490
491         setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1);
492
493         if (safe_create_leading_directories_const(git_dir) < 0)
494                 die(_("could not create leading directories of '%s'"), git_dir);
495
496         set_git_dir_init(git_dir, real_git_dir, 0);
497         if (real_git_dir)
498                 git_dir = real_git_dir;
499
500         if (0 <= option_verbosity) {
501                 if (option_bare)
502                         printf(_("Cloning into bare repository %s...\n"), dir);
503                 else
504                         printf(_("Cloning into %s...\n"), dir);
505         }
506         init_db(option_template, INIT_DB_QUIET);
507         write_config(&option_config);
508
509         /*
510          * At this point, the config exists, so we do not need the
511          * environment variable.  We actually need to unset it, too, to
512          * re-enable parsing of the global configs.
513          */
514         unsetenv(CONFIG_ENVIRONMENT);
515
516         git_config(git_default_config, NULL);
517
518         if (option_bare) {
519                 if (option_mirror)
520                         src_ref_prefix = "refs/";
521                 strbuf_addstr(&branch_top, src_ref_prefix);
522
523                 git_config_set("core.bare", "true");
524         } else {
525                 strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin);
526         }
527
528         strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf);
529
530         if (option_mirror || !option_bare) {
531                 /* Configure the remote */
532                 strbuf_addf(&key, "remote.%s.fetch", option_origin);
533                 git_config_set_multivar(key.buf, value.buf, "^$", 0);
534                 strbuf_reset(&key);
535
536                 if (option_mirror) {
537                         strbuf_addf(&key, "remote.%s.mirror", option_origin);
538                         git_config_set(key.buf, "true");
539                         strbuf_reset(&key);
540                 }
541         }
542
543         strbuf_addf(&key, "remote.%s.url", option_origin);
544         git_config_set(key.buf, repo);
545         strbuf_reset(&key);
546
547         if (option_reference)
548                 setup_reference(git_dir);
549
550         fetch_pattern = value.buf;
551         refspec = parse_fetch_refspec(1, &fetch_pattern);
552
553         strbuf_reset(&value);
554
555         if (is_local) {
556                 refs = clone_local(path, git_dir);
557                 mapped_refs = wanted_peer_refs(refs, refspec);
558         } else {
559                 struct remote *remote = remote_get(option_origin);
560                 transport = transport_get(remote, remote->url[0]);
561
562                 if (!transport->get_refs_list || !transport->fetch)
563                         die(_("Don't know how to clone %s"), transport->url);
564
565                 transport_set_option(transport, TRANS_OPT_KEEP, "yes");
566
567                 if (option_depth)
568                         transport_set_option(transport, TRANS_OPT_DEPTH,
569                                              option_depth);
570
571                 transport_set_verbosity(transport, option_verbosity, option_progress);
572
573                 if (option_upload_pack)
574                         transport_set_option(transport, TRANS_OPT_UPLOADPACK,
575                                              option_upload_pack);
576
577                 refs = transport_get_remote_refs(transport);
578                 if (refs) {
579                         mapped_refs = wanted_peer_refs(refs, refspec);
580                         transport_fetch_refs(transport, mapped_refs);
581                 }
582         }
583
584         if (refs) {
585                 clear_extra_refs();
586
587                 write_remote_refs(mapped_refs);
588
589                 remote_head = find_ref_by_name(refs, "HEAD");
590                 remote_head_points_at =
591                         guess_remote_head(remote_head, mapped_refs, 0);
592
593                 if (option_branch) {
594                         struct strbuf head = STRBUF_INIT;
595                         strbuf_addstr(&head, src_ref_prefix);
596                         strbuf_addstr(&head, option_branch);
597                         our_head_points_at =
598                                 find_ref_by_name(mapped_refs, head.buf);
599                         strbuf_release(&head);
600
601                         if (!our_head_points_at) {
602                                 warning(_("Remote branch %s not found in "
603                                         "upstream %s, using HEAD instead"),
604                                         option_branch, option_origin);
605                                 our_head_points_at = remote_head_points_at;
606                         }
607                 }
608                 else
609                         our_head_points_at = remote_head_points_at;
610         }
611         else {
612                 warning(_("You appear to have cloned an empty repository."));
613                 our_head_points_at = NULL;
614                 remote_head_points_at = NULL;
615                 remote_head = NULL;
616                 option_no_checkout = 1;
617                 if (!option_bare)
618                         install_branch_config(0, "master", option_origin,
619                                               "refs/heads/master");
620         }
621
622         if (remote_head_points_at && !option_bare) {
623                 struct strbuf head_ref = STRBUF_INIT;
624                 strbuf_addstr(&head_ref, branch_top.buf);
625                 strbuf_addstr(&head_ref, "HEAD");
626                 create_symref(head_ref.buf,
627                               remote_head_points_at->peer_ref->name,
628                               reflog_msg.buf);
629         }
630
631         if (our_head_points_at) {
632                 /* Local default branch link */
633                 create_symref("HEAD", our_head_points_at->name, NULL);
634                 if (!option_bare) {
635                         const char *head = skip_prefix(our_head_points_at->name,
636                                                        "refs/heads/");
637                         update_ref(reflog_msg.buf, "HEAD",
638                                    our_head_points_at->old_sha1,
639                                    NULL, 0, DIE_ON_ERR);
640                         install_branch_config(0, head, option_origin,
641                                               our_head_points_at->name);
642                 }
643         } else if (remote_head) {
644                 /* Source had detached HEAD pointing somewhere. */
645                 if (!option_bare) {
646                         update_ref(reflog_msg.buf, "HEAD",
647                                    remote_head->old_sha1,
648                                    NULL, REF_NODEREF, DIE_ON_ERR);
649                         our_head_points_at = remote_head;
650                 }
651         } else {
652                 /* Nothing to checkout out */
653                 if (!option_no_checkout)
654                         warning(_("remote HEAD refers to nonexistent ref, "
655                                 "unable to checkout.\n"));
656                 option_no_checkout = 1;
657         }
658
659         if (transport) {
660                 transport_unlock_pack(transport);
661                 transport_disconnect(transport);
662         }
663
664         if (!option_no_checkout) {
665                 struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
666                 struct unpack_trees_options opts;
667                 struct tree *tree;
668                 struct tree_desc t;
669                 int fd;
670
671                 /* We need to be in the new work tree for the checkout */
672                 setup_work_tree();
673
674                 fd = hold_locked_index(lock_file, 1);
675
676                 memset(&opts, 0, sizeof opts);
677                 opts.update = 1;
678                 opts.merge = 1;
679                 opts.fn = oneway_merge;
680                 opts.verbose_update = (option_verbosity > 0);
681                 opts.src_index = &the_index;
682                 opts.dst_index = &the_index;
683
684                 tree = parse_tree_indirect(our_head_points_at->old_sha1);
685                 parse_tree(tree);
686                 init_tree_desc(&t, tree->buffer, tree->size);
687                 unpack_trees(1, &t, &opts);
688
689                 if (write_cache(fd, active_cache, active_nr) ||
690                     commit_locked_index(lock_file))
691                         die(_("unable to write new index file"));
692
693                 err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1),
694                                 sha1_to_hex(our_head_points_at->old_sha1), "1",
695                                 NULL);
696
697                 if (!err && option_recursive)
698                         err = run_command_v_opt(argv_submodule, RUN_GIT_CMD);
699         }
700
701         strbuf_release(&reflog_msg);
702         strbuf_release(&branch_top);
703         strbuf_release(&key);
704         strbuf_release(&value);
705         junk_pid = 0;
706         return err;
707 }