diff options
Diffstat (limited to 'builtin/reflog.c')
-rw-r--r-- | builtin/reflog.c | 310 |
1 files changed, 143 insertions, 167 deletions
diff --git a/builtin/reflog.c b/builtin/reflog.c index 2d85d260ca..f96ca2a27d 100644 --- a/builtin/reflog.c +++ b/builtin/reflog.c @@ -8,32 +8,26 @@ #include "revision.h" #include "reachable.h" -/* - * reflog expire - */ - +/* NEEDSWORK: switch to using parse_options */ static const char reflog_expire_usage[] = -"git reflog expire [--verbose] [--dry-run] [--stale-fix] [--expire=<time>] [--expire-unreachable=<time>] [--all] <refs>..."; +"git reflog expire [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] [--dry-run | -n] [--verbose] [--all] <refs>..."; static const char reflog_delete_usage[] = -"git reflog delete [--verbose] [--dry-run] [--rewrite] [--updateref] <refs>..."; +"git reflog delete [--rewrite] [--updateref] [--dry-run | -n] [--verbose] <refs>..."; +static const char reflog_exists_usage[] = +"git reflog exists <ref>"; static unsigned long default_reflog_expire; static unsigned long default_reflog_expire_unreachable; struct cmd_reflog_expire_cb { struct rev_info revs; - int dry_run; int stalefix; - int rewrite; - int updateref; - int verbose; unsigned long expire_total; unsigned long expire_unreachable; int recno; }; -struct expire_reflog_cb { - FILE *newlog; +struct expire_reflog_policy_cb { enum { UE_NORMAL, UE_ALWAYS, @@ -41,14 +35,16 @@ struct expire_reflog_cb { } unreachable_expire_kind; struct commit_list *mark_list; unsigned long mark_limit; - struct cmd_reflog_expire_cb *cmd; - unsigned char last_kept_sha1[20]; + struct cmd_reflog_expire_cb cmd; + struct commit *tip_commit; + struct commit_list *tips; }; struct collected_reflog { unsigned char sha1[20]; char reflog[FLEX_ARRAY]; }; + struct collect_reflog_cb { struct collected_reflog **e; int alloc; @@ -220,7 +216,7 @@ static int keep_entry(struct commit **it, unsigned char *sha1) * the expire_limit and queue them back, so that the caller can call * us again to restart the traversal with longer expire_limit. */ -static void mark_reachable(struct expire_reflog_cb *cb) +static void mark_reachable(struct expire_reflog_policy_cb *cb) { struct commit *commit; struct commit_list *pending; @@ -259,7 +255,7 @@ static void mark_reachable(struct expire_reflog_cb *cb) cb->mark_list = leftover; } -static int unreachable(struct expire_reflog_cb *cb, struct commit *commit, unsigned char *sha1) +static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, unsigned char *sha1) { /* * We may or may not have the commit yet - if not, look it @@ -288,175 +284,112 @@ static int unreachable(struct expire_reflog_cb *cb, struct commit *commit, unsig return !(commit->object.flags & REACHABLE); } -static int expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1, - const char *email, unsigned long timestamp, int tz, - const char *message, void *cb_data) +/* + * Return true iff the specified reflog entry should be expired. + */ +static int should_expire_reflog_ent(unsigned char *osha1, unsigned char *nsha1, + const char *email, unsigned long timestamp, int tz, + const char *message, void *cb_data) { - struct expire_reflog_cb *cb = cb_data; + struct expire_reflog_policy_cb *cb = cb_data; struct commit *old, *new; - if (timestamp < cb->cmd->expire_total) - goto prune; - - if (cb->cmd->rewrite) - osha1 = cb->last_kept_sha1; + if (timestamp < cb->cmd.expire_total) + return 1; old = new = NULL; - if (cb->cmd->stalefix && + if (cb->cmd.stalefix && (!keep_entry(&old, osha1) || !keep_entry(&new, nsha1))) - goto prune; + return 1; - if (timestamp < cb->cmd->expire_unreachable) { + if (timestamp < cb->cmd.expire_unreachable) { if (cb->unreachable_expire_kind == UE_ALWAYS) - goto prune; + return 1; if (unreachable(cb, old, osha1) || unreachable(cb, new, nsha1)) - goto prune; + return 1; } - if (cb->cmd->recno && --(cb->cmd->recno) == 0) - goto prune; - - if (cb->newlog) { - char sign = (tz < 0) ? '-' : '+'; - int zone = (tz < 0) ? (-tz) : tz; - fprintf(cb->newlog, "%s %s %s %lu %c%04d\t%s", - sha1_to_hex(osha1), sha1_to_hex(nsha1), - email, timestamp, sign, zone, - message); - hashcpy(cb->last_kept_sha1, nsha1); - } - if (cb->cmd->verbose) - printf("keep %s", message); - return 0; - prune: - if (!cb->newlog) - printf("would prune %s", message); - else if (cb->cmd->verbose) - printf("prune %s", message); + if (cb->cmd.recno && --(cb->cmd.recno) == 0) + return 1; + return 0; } -static int push_tip_to_list(const char *refname, const unsigned char *sha1, int flags, void *cb_data) +static int push_tip_to_list(const char *refname, const struct object_id *oid, + int flags, void *cb_data) { struct commit_list **list = cb_data; struct commit *tip_commit; if (flags & REF_ISSYMREF) return 0; - tip_commit = lookup_commit_reference_gently(sha1, 1); + tip_commit = lookup_commit_reference_gently(oid->hash, 1); if (!tip_commit) return 0; commit_list_insert(tip_commit, list); return 0; } -static int expire_reflog(const char *ref, const unsigned char *sha1, int unused, void *cb_data) +static void reflog_expiry_prepare(const char *refname, + const unsigned char *sha1, + void *cb_data) { - struct cmd_reflog_expire_cb *cmd = cb_data; - struct expire_reflog_cb cb; - struct ref_lock *lock; - char *log_file, *newlog_path = NULL; - struct commit *tip_commit; - struct commit_list *tips; - int status = 0; - - memset(&cb, 0, sizeof(cb)); - - /* - * we take the lock for the ref itself to prevent it from - * getting updated. - */ - lock = lock_any_ref_for_update(ref, sha1, 0, NULL); - if (!lock) - return error("cannot lock ref '%s'", ref); - log_file = git_pathdup("logs/%s", ref); - if (!reflog_exists(ref)) - goto finish; - if (!cmd->dry_run) { - newlog_path = git_pathdup("logs/%s.lock", ref); - cb.newlog = fopen(newlog_path, "w"); - } - - cb.cmd = cmd; + struct expire_reflog_policy_cb *cb = cb_data; - if (!cmd->expire_unreachable || !strcmp(ref, "HEAD")) { - tip_commit = NULL; - cb.unreachable_expire_kind = UE_HEAD; + if (!cb->cmd.expire_unreachable || !strcmp(refname, "HEAD")) { + cb->tip_commit = NULL; + cb->unreachable_expire_kind = UE_HEAD; } else { - tip_commit = lookup_commit_reference_gently(sha1, 1); - if (!tip_commit) - cb.unreachable_expire_kind = UE_ALWAYS; + cb->tip_commit = lookup_commit_reference_gently(sha1, 1); + if (!cb->tip_commit) + cb->unreachable_expire_kind = UE_ALWAYS; else - cb.unreachable_expire_kind = UE_NORMAL; + cb->unreachable_expire_kind = UE_NORMAL; } - if (cmd->expire_unreachable <= cmd->expire_total) - cb.unreachable_expire_kind = UE_ALWAYS; + if (cb->cmd.expire_unreachable <= cb->cmd.expire_total) + cb->unreachable_expire_kind = UE_ALWAYS; - cb.mark_list = NULL; - tips = NULL; - if (cb.unreachable_expire_kind != UE_ALWAYS) { - if (cb.unreachable_expire_kind == UE_HEAD) { + cb->mark_list = NULL; + cb->tips = NULL; + if (cb->unreachable_expire_kind != UE_ALWAYS) { + if (cb->unreachable_expire_kind == UE_HEAD) { struct commit_list *elem; - for_each_ref(push_tip_to_list, &tips); - for (elem = tips; elem; elem = elem->next) - commit_list_insert(elem->item, &cb.mark_list); + + for_each_ref(push_tip_to_list, &cb->tips); + for (elem = cb->tips; elem; elem = elem->next) + commit_list_insert(elem->item, &cb->mark_list); } else { - commit_list_insert(tip_commit, &cb.mark_list); + commit_list_insert(cb->tip_commit, &cb->mark_list); } - cb.mark_limit = cmd->expire_total; - mark_reachable(&cb); + cb->mark_limit = cb->cmd.expire_total; + mark_reachable(cb); } +} - for_each_reflog_ent(ref, expire_reflog_ent, &cb); +static void reflog_expiry_cleanup(void *cb_data) +{ + struct expire_reflog_policy_cb *cb = cb_data; - if (cb.unreachable_expire_kind != UE_ALWAYS) { - if (cb.unreachable_expire_kind == UE_HEAD) { + if (cb->unreachable_expire_kind != UE_ALWAYS) { + if (cb->unreachable_expire_kind == UE_HEAD) { struct commit_list *elem; - for (elem = tips; elem; elem = elem->next) + for (elem = cb->tips; elem; elem = elem->next) clear_commit_marks(elem->item, REACHABLE); - free_commit_list(tips); - } else { - clear_commit_marks(tip_commit, REACHABLE); - } - } - finish: - if (cb.newlog) { - if (fclose(cb.newlog)) { - status |= error("%s: %s", strerror(errno), - newlog_path); - unlink(newlog_path); - } else if (cmd->updateref && - (write_in_full(lock->lock_fd, - sha1_to_hex(cb.last_kept_sha1), 40) != 40 || - write_str_in_full(lock->lock_fd, "\n") != 1 || - close_ref(lock) < 0)) { - status |= error("Couldn't write %s", - lock->lk->filename.buf); - unlink(newlog_path); - } else if (rename(newlog_path, log_file)) { - status |= error("cannot rename %s to %s", - newlog_path, log_file); - unlink(newlog_path); - } else if (cmd->updateref && commit_ref(lock)) { - status |= error("Couldn't set %s", lock->ref_name); + free_commit_list(cb->tips); } else { - adjust_shared_perm(log_file); + clear_commit_marks(cb->tip_commit, REACHABLE); } } - free(newlog_path); - free(log_file); - unlock_ref(lock); - return status; } -static int collect_reflog(const char *ref, const unsigned char *sha1, int unused, void *cb_data) +static int collect_reflog(const char *ref, const struct object_id *oid, int unused, void *cb_data) { struct collected_reflog *e; struct collect_reflog_cb *cb = cb_data; size_t namelen = strlen(ref); e = xmalloc(sizeof(*e) + namelen + 1); - hashcpy(e->sha1, sha1); + hashcpy(e->sha1, oid->hash); memcpy(e->reflog, ref, namelen + 1); ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc); cb->e[cb->nr++] = e; @@ -496,7 +429,7 @@ static int parse_expire_cfg_value(const char *var, const char *value, unsigned l if (!value) return config_error_nonbool(var); if (parse_expiry_date(value, expire)) - return error(_("%s' for '%s' is not a valid timestamp"), + return error(_("'%s' for '%s' is not a valid timestamp"), value, var); return 0; } @@ -590,10 +523,11 @@ static void set_reflog_expiry_param(struct cmd_reflog_expire_cb *cb, int slot, c static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) { - struct cmd_reflog_expire_cb cb; + struct expire_reflog_policy_cb cb; unsigned long now = time(NULL); int i, status, do_all; int explicit_expiry = 0; + unsigned int flags = 0; default_reflog_expire_unreachable = now - 30 * 24 * 3600; default_reflog_expire = now - 90 * 24 * 3600; @@ -603,33 +537,33 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) do_all = status = 0; memset(&cb, 0, sizeof(cb)); - cb.expire_total = default_reflog_expire; - cb.expire_unreachable = default_reflog_expire_unreachable; + cb.cmd.expire_total = default_reflog_expire; + cb.cmd.expire_unreachable = default_reflog_expire_unreachable; for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) - cb.dry_run = 1; + flags |= EXPIRE_REFLOGS_DRY_RUN; else if (starts_with(arg, "--expire=")) { - if (parse_expiry_date(arg + 9, &cb.expire_total)) + if (parse_expiry_date(arg + 9, &cb.cmd.expire_total)) die(_("'%s' is not a valid timestamp"), arg); explicit_expiry |= EXPIRE_TOTAL; } else if (starts_with(arg, "--expire-unreachable=")) { - if (parse_expiry_date(arg + 21, &cb.expire_unreachable)) + if (parse_expiry_date(arg + 21, &cb.cmd.expire_unreachable)) die(_("'%s' is not a valid timestamp"), arg); explicit_expiry |= EXPIRE_UNREACH; } else if (!strcmp(arg, "--stale-fix")) - cb.stalefix = 1; + cb.cmd.stalefix = 1; else if (!strcmp(arg, "--rewrite")) - cb.rewrite = 1; + flags |= EXPIRE_REFLOGS_REWRITE; else if (!strcmp(arg, "--updateref")) - cb.updateref = 1; + flags |= EXPIRE_REFLOGS_UPDATE_REF; else if (!strcmp(arg, "--all")) do_all = 1; else if (!strcmp(arg, "--verbose")) - cb.verbose = 1; + flags |= EXPIRE_REFLOGS_VERBOSE; else if (!strcmp(arg, "--")) { i++; break; @@ -645,12 +579,12 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) * even in older repository. We cannot trust what's reachable * from reflog if the repository was pruned with older git. */ - if (cb.stalefix) { - init_revisions(&cb.revs, prefix); - if (cb.verbose) + if (cb.cmd.stalefix) { + init_revisions(&cb.cmd.revs, prefix); + if (flags & EXPIRE_REFLOGS_VERBOSE) printf("Marking reachable objects..."); - mark_reachable_objects(&cb.revs, 0, 0, NULL); - if (cb.verbose) + mark_reachable_objects(&cb.cmd.revs, 0, 0, NULL); + if (flags & EXPIRE_REFLOGS_VERBOSE) putchar('\n'); } @@ -662,8 +596,12 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) for_each_reflog(collect_reflog, &collected); for (i = 0; i < collected.nr; i++) { struct collected_reflog *e = collected.e[i]; - set_reflog_expiry_param(&cb, explicit_expiry, e->reflog); - status |= expire_reflog(e->reflog, e->sha1, 0, &cb); + set_reflog_expiry_param(&cb.cmd, explicit_expiry, e->reflog); + status |= reflog_expire(e->reflog, e->sha1, flags, + reflog_expiry_prepare, + should_expire_reflog_ent, + reflog_expiry_cleanup, + &cb); free(e); } free(collected.e); @@ -676,8 +614,12 @@ static int cmd_reflog_expire(int argc, const char **argv, const char *prefix) status |= error("%s points nowhere!", argv[i]); continue; } - set_reflog_expiry_param(&cb, explicit_expiry, ref); - status |= expire_reflog(ref, sha1, 0, &cb); + set_reflog_expiry_param(&cb.cmd, explicit_expiry, ref); + status |= reflog_expire(ref, sha1, flags, + reflog_expiry_prepare, + should_expire_reflog_ent, + reflog_expiry_cleanup, + &cb); } return status; } @@ -686,29 +628,30 @@ static int count_reflog_ent(unsigned char *osha1, unsigned char *nsha1, const char *email, unsigned long timestamp, int tz, const char *message, void *cb_data) { - struct cmd_reflog_expire_cb *cb = cb_data; - if (!cb->expire_total || timestamp < cb->expire_total) - cb->recno++; + struct expire_reflog_policy_cb *cb = cb_data; + if (!cb->cmd.expire_total || timestamp < cb->cmd.expire_total) + cb->cmd.recno++; return 0; } static int cmd_reflog_delete(int argc, const char **argv, const char *prefix) { - struct cmd_reflog_expire_cb cb; + struct expire_reflog_policy_cb cb; int i, status = 0; + unsigned int flags = 0; memset(&cb, 0, sizeof(cb)); for (i = 1; i < argc; i++) { const char *arg = argv[i]; if (!strcmp(arg, "--dry-run") || !strcmp(arg, "-n")) - cb.dry_run = 1; + flags |= EXPIRE_REFLOGS_DRY_RUN; else if (!strcmp(arg, "--rewrite")) - cb.rewrite = 1; + flags |= EXPIRE_REFLOGS_REWRITE; else if (!strcmp(arg, "--updateref")) - cb.updateref = 1; + flags |= EXPIRE_REFLOGS_UPDATE_REF; else if (!strcmp(arg, "--verbose")) - cb.verbose = 1; + flags |= EXPIRE_REFLOGS_VERBOSE; else if (!strcmp(arg, "--")) { i++; break; @@ -740,26 +683,56 @@ static int cmd_reflog_delete(int argc, const char **argv, const char *prefix) recno = strtoul(spec + 2, &ep, 10); if (*ep == '}') { - cb.recno = -recno; + cb.cmd.recno = -recno; for_each_reflog_ent(ref, count_reflog_ent, &cb); } else { - cb.expire_total = approxidate(spec + 2); + cb.cmd.expire_total = approxidate(spec + 2); for_each_reflog_ent(ref, count_reflog_ent, &cb); - cb.expire_total = 0; + cb.cmd.expire_total = 0; } - status |= expire_reflog(ref, sha1, 0, &cb); + status |= reflog_expire(ref, sha1, flags, + reflog_expiry_prepare, + should_expire_reflog_ent, + reflog_expiry_cleanup, + &cb); free(ref); } return status; } +static int cmd_reflog_exists(int argc, const char **argv, const char *prefix) +{ + int i, start = 0; + + for (i = 1; i < argc; i++) { + const char *arg = argv[i]; + if (!strcmp(arg, "--")) { + i++; + break; + } + else if (arg[0] == '-') + usage(reflog_exists_usage); + else + break; + } + + start = i; + + if (argc - start != 1) + usage(reflog_exists_usage); + + if (check_refname_format(argv[start], REFNAME_ALLOW_ONELEVEL)) + die("invalid ref format: %s", argv[start]); + return !reflog_exists(argv[start]); +} + /* * main "reflog" */ static const char reflog_usage[] = -"git reflog [ show | expire | delete ]"; +"git reflog [ show | expire | delete | exists ]"; int cmd_reflog(int argc, const char **argv, const char *prefix) { @@ -779,5 +752,8 @@ int cmd_reflog(int argc, const char **argv, const char *prefix) if (!strcmp(argv[1], "delete")) return cmd_reflog_delete(argc - 1, argv + 1, prefix); + if (!strcmp(argv[1], "exists")) + return cmd_reflog_exists(argc - 1, argv + 1, prefix); + return cmd_log_reflog(argc, argv, prefix); } |