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5f9674243d
Add --expiry-date as a data-type for config files when 'git config --get' is used. This will return any relative or fixed dates from config files as timestamps. This is useful for scripts (e.g. gc.reflogexpire) that work with timestamps so that '2.weeks' can be converted to a format acceptable by those scripts/functions. Following the convention of git_config_pathname(), move the helper function required for this feature from builtin/reflog.c to builtin/config.c where other similar functions exist (e.g. for --bool or --path), and match the order of parameters with other functions (i.e. output pointer as first parameter). Signed-off-by: Haaris Mehmood <hsed@unimetic.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
741 lines
19 KiB
C
741 lines
19 KiB
C
#include "builtin.h"
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#include "config.h"
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#include "lockfile.h"
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#include "commit.h"
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#include "refs.h"
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#include "dir.h"
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#include "tree-walk.h"
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#include "diff.h"
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#include "revision.h"
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#include "reachable.h"
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/* NEEDSWORK: switch to using parse_options */
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static const char reflog_expire_usage[] =
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"git reflog expire [--expire=<time>] [--expire-unreachable=<time>] [--rewrite] [--updateref] [--stale-fix] [--dry-run | -n] [--verbose] [--all] <refs>...";
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static const char reflog_delete_usage[] =
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"git reflog delete [--rewrite] [--updateref] [--dry-run | -n] [--verbose] <refs>...";
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static const char reflog_exists_usage[] =
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"git reflog exists <ref>";
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static timestamp_t default_reflog_expire;
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static timestamp_t default_reflog_expire_unreachable;
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struct cmd_reflog_expire_cb {
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struct rev_info revs;
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int stalefix;
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timestamp_t expire_total;
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timestamp_t expire_unreachable;
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int recno;
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};
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struct expire_reflog_policy_cb {
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enum {
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UE_NORMAL,
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UE_ALWAYS,
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UE_HEAD
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} unreachable_expire_kind;
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struct commit_list *mark_list;
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unsigned long mark_limit;
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struct cmd_reflog_expire_cb cmd;
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struct commit *tip_commit;
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struct commit_list *tips;
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};
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struct collected_reflog {
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struct object_id oid;
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char reflog[FLEX_ARRAY];
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};
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struct collect_reflog_cb {
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struct collected_reflog **e;
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int alloc;
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int nr;
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};
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#define INCOMPLETE (1u<<10)
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#define STUDYING (1u<<11)
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#define REACHABLE (1u<<12)
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static int tree_is_complete(const struct object_id *oid)
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{
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struct tree_desc desc;
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struct name_entry entry;
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int complete;
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struct tree *tree;
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tree = lookup_tree(oid);
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if (!tree)
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return 0;
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if (tree->object.flags & SEEN)
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return 1;
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if (tree->object.flags & INCOMPLETE)
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return 0;
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if (!tree->buffer) {
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enum object_type type;
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unsigned long size;
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void *data = read_sha1_file(oid->hash, &type, &size);
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if (!data) {
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tree->object.flags |= INCOMPLETE;
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return 0;
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}
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tree->buffer = data;
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tree->size = size;
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}
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init_tree_desc(&desc, tree->buffer, tree->size);
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complete = 1;
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while (tree_entry(&desc, &entry)) {
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if (!has_sha1_file(entry.oid->hash) ||
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(S_ISDIR(entry.mode) && !tree_is_complete(entry.oid))) {
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tree->object.flags |= INCOMPLETE;
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complete = 0;
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}
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}
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free_tree_buffer(tree);
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if (complete)
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tree->object.flags |= SEEN;
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return complete;
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}
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static int commit_is_complete(struct commit *commit)
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{
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struct object_array study;
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struct object_array found;
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int is_incomplete = 0;
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int i;
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/* early return */
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if (commit->object.flags & SEEN)
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return 1;
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if (commit->object.flags & INCOMPLETE)
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return 0;
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/*
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* Find all commits that are reachable and are not marked as
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* SEEN. Then make sure the trees and blobs contained are
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* complete. After that, mark these commits also as SEEN.
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* If some of the objects that are needed to complete this
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* commit are missing, mark this commit as INCOMPLETE.
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*/
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memset(&study, 0, sizeof(study));
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memset(&found, 0, sizeof(found));
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add_object_array(&commit->object, NULL, &study);
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add_object_array(&commit->object, NULL, &found);
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commit->object.flags |= STUDYING;
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while (study.nr) {
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struct commit *c;
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struct commit_list *parent;
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c = (struct commit *)object_array_pop(&study);
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if (!c->object.parsed && !parse_object(&c->object.oid))
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c->object.flags |= INCOMPLETE;
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if (c->object.flags & INCOMPLETE) {
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is_incomplete = 1;
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break;
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}
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else if (c->object.flags & SEEN)
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continue;
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for (parent = c->parents; parent; parent = parent->next) {
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struct commit *p = parent->item;
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if (p->object.flags & STUDYING)
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continue;
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p->object.flags |= STUDYING;
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add_object_array(&p->object, NULL, &study);
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add_object_array(&p->object, NULL, &found);
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}
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}
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if (!is_incomplete) {
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/*
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* make sure all commits in "found" array have all the
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* necessary objects.
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*/
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for (i = 0; i < found.nr; i++) {
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struct commit *c =
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(struct commit *)found.objects[i].item;
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if (!tree_is_complete(&c->tree->object.oid)) {
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is_incomplete = 1;
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c->object.flags |= INCOMPLETE;
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}
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}
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if (!is_incomplete) {
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/* mark all found commits as complete, iow SEEN */
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags |= SEEN;
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}
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}
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/* clear flags from the objects we traversed */
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags &= ~STUDYING;
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if (is_incomplete)
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commit->object.flags |= INCOMPLETE;
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else {
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/*
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* If we come here, we have (1) traversed the ancestry chain
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* from the "commit" until we reach SEEN commits (which are
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* known to be complete), and (2) made sure that the commits
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* encountered during the above traversal refer to trees that
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* are complete. Which means that we know *all* the commits
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* we have seen during this process are complete.
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*/
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for (i = 0; i < found.nr; i++)
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found.objects[i].item->flags |= SEEN;
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}
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/* free object arrays */
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object_array_clear(&study);
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object_array_clear(&found);
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return !is_incomplete;
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}
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static int keep_entry(struct commit **it, struct object_id *oid)
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{
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struct commit *commit;
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if (is_null_oid(oid))
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return 1;
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commit = lookup_commit_reference_gently(oid, 1);
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if (!commit)
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return 0;
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/*
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* Make sure everything in this commit exists.
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*
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* We have walked all the objects reachable from the refs
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* and cache earlier. The commits reachable by this commit
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* must meet SEEN commits -- and then we should mark them as
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* SEEN as well.
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*/
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if (!commit_is_complete(commit))
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return 0;
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*it = commit;
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return 1;
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}
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/*
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* Starting from commits in the cb->mark_list, mark commits that are
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* reachable from them. Stop the traversal at commits older than
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* the expire_limit and queue them back, so that the caller can call
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* us again to restart the traversal with longer expire_limit.
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*/
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static void mark_reachable(struct expire_reflog_policy_cb *cb)
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{
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struct commit_list *pending;
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timestamp_t expire_limit = cb->mark_limit;
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struct commit_list *leftover = NULL;
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for (pending = cb->mark_list; pending; pending = pending->next)
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pending->item->object.flags &= ~REACHABLE;
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pending = cb->mark_list;
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while (pending) {
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struct commit_list *parent;
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struct commit *commit = pop_commit(&pending);
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if (commit->object.flags & REACHABLE)
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continue;
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if (parse_commit(commit))
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continue;
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commit->object.flags |= REACHABLE;
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if (commit->date < expire_limit) {
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commit_list_insert(commit, &leftover);
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continue;
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}
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commit->object.flags |= REACHABLE;
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parent = commit->parents;
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while (parent) {
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commit = parent->item;
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parent = parent->next;
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if (commit->object.flags & REACHABLE)
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continue;
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commit_list_insert(commit, &pending);
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}
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}
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cb->mark_list = leftover;
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}
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static int unreachable(struct expire_reflog_policy_cb *cb, struct commit *commit, struct object_id *oid)
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{
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/*
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* We may or may not have the commit yet - if not, look it
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* up using the supplied sha1.
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*/
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if (!commit) {
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if (is_null_oid(oid))
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return 0;
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commit = lookup_commit_reference_gently(oid, 1);
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/* Not a commit -- keep it */
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if (!commit)
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return 0;
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}
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/* Reachable from the current ref? Don't prune. */
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if (commit->object.flags & REACHABLE)
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return 0;
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if (cb->mark_list && cb->mark_limit) {
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cb->mark_limit = 0; /* dig down to the root */
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mark_reachable(cb);
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}
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return !(commit->object.flags & REACHABLE);
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}
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/*
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* Return true iff the specified reflog entry should be expired.
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*/
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static int should_expire_reflog_ent(struct object_id *ooid, struct object_id *noid,
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const char *email, timestamp_t timestamp, int tz,
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const char *message, void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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struct commit *old, *new;
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if (timestamp < cb->cmd.expire_total)
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return 1;
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old = new = NULL;
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if (cb->cmd.stalefix &&
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(!keep_entry(&old, ooid) || !keep_entry(&new, noid)))
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return 1;
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if (timestamp < cb->cmd.expire_unreachable) {
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if (cb->unreachable_expire_kind == UE_ALWAYS)
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return 1;
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if (unreachable(cb, old, ooid) || unreachable(cb, new, noid))
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return 1;
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}
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if (cb->cmd.recno && --(cb->cmd.recno) == 0)
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return 1;
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return 0;
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}
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static int push_tip_to_list(const char *refname, const struct object_id *oid,
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int flags, void *cb_data)
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{
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struct commit_list **list = cb_data;
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struct commit *tip_commit;
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if (flags & REF_ISSYMREF)
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return 0;
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tip_commit = lookup_commit_reference_gently(oid, 1);
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if (!tip_commit)
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return 0;
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commit_list_insert(tip_commit, list);
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return 0;
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}
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static void reflog_expiry_prepare(const char *refname,
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const struct object_id *oid,
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void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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if (!cb->cmd.expire_unreachable || !strcmp(refname, "HEAD")) {
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cb->tip_commit = NULL;
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cb->unreachable_expire_kind = UE_HEAD;
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} else {
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cb->tip_commit = lookup_commit_reference_gently(oid, 1);
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if (!cb->tip_commit)
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cb->unreachable_expire_kind = UE_ALWAYS;
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else
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cb->unreachable_expire_kind = UE_NORMAL;
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}
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if (cb->cmd.expire_unreachable <= cb->cmd.expire_total)
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cb->unreachable_expire_kind = UE_ALWAYS;
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cb->mark_list = NULL;
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cb->tips = NULL;
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if (cb->unreachable_expire_kind != UE_ALWAYS) {
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if (cb->unreachable_expire_kind == UE_HEAD) {
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struct commit_list *elem;
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for_each_ref(push_tip_to_list, &cb->tips);
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for (elem = cb->tips; elem; elem = elem->next)
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commit_list_insert(elem->item, &cb->mark_list);
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} else {
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commit_list_insert(cb->tip_commit, &cb->mark_list);
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}
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cb->mark_limit = cb->cmd.expire_total;
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mark_reachable(cb);
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}
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}
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static void reflog_expiry_cleanup(void *cb_data)
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{
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struct expire_reflog_policy_cb *cb = cb_data;
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if (cb->unreachable_expire_kind != UE_ALWAYS) {
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if (cb->unreachable_expire_kind == UE_HEAD) {
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struct commit_list *elem;
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for (elem = cb->tips; elem; elem = elem->next)
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clear_commit_marks(elem->item, REACHABLE);
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free_commit_list(cb->tips);
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} else {
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clear_commit_marks(cb->tip_commit, REACHABLE);
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}
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}
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}
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static int collect_reflog(const char *ref, const struct object_id *oid, int unused, void *cb_data)
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{
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struct collected_reflog *e;
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struct collect_reflog_cb *cb = cb_data;
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FLEX_ALLOC_STR(e, reflog, ref);
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oidcpy(&e->oid, oid);
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ALLOC_GROW(cb->e, cb->nr + 1, cb->alloc);
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cb->e[cb->nr++] = e;
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return 0;
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}
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static struct reflog_expire_cfg {
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struct reflog_expire_cfg *next;
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timestamp_t expire_total;
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timestamp_t expire_unreachable;
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char pattern[FLEX_ARRAY];
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} *reflog_expire_cfg, **reflog_expire_cfg_tail;
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static struct reflog_expire_cfg *find_cfg_ent(const char *pattern, size_t len)
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{
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struct reflog_expire_cfg *ent;
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if (!reflog_expire_cfg_tail)
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reflog_expire_cfg_tail = &reflog_expire_cfg;
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for (ent = reflog_expire_cfg; ent; ent = ent->next)
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if (!strncmp(ent->pattern, pattern, len) &&
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ent->pattern[len] == '\0')
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return ent;
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FLEX_ALLOC_MEM(ent, pattern, pattern, len);
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*reflog_expire_cfg_tail = ent;
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reflog_expire_cfg_tail = &(ent->next);
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return ent;
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}
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/* expiry timer slot */
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#define EXPIRE_TOTAL 01
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#define EXPIRE_UNREACH 02
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static int reflog_expire_config(const char *var, const char *value, void *cb)
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{
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const char *pattern, *key;
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int pattern_len;
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timestamp_t expire;
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int slot;
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struct reflog_expire_cfg *ent;
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if (parse_config_key(var, "gc", &pattern, &pattern_len, &key) < 0)
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return git_default_config(var, value, cb);
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if (!strcmp(key, "reflogexpire")) {
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slot = EXPIRE_TOTAL;
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if (git_config_expiry_date(&expire, var, value))
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return -1;
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} else if (!strcmp(key, "reflogexpireunreachable")) {
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slot = EXPIRE_UNREACH;
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if (git_config_expiry_date(&expire, var, value))
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return -1;
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} else
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return git_default_config(var, value, cb);
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if (!pattern) {
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switch (slot) {
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case EXPIRE_TOTAL:
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default_reflog_expire = expire;
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break;
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case EXPIRE_UNREACH:
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default_reflog_expire_unreachable = expire;
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break;
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}
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return 0;
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}
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ent = find_cfg_ent(pattern, pattern_len);
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if (!ent)
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return -1;
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switch (slot) {
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case EXPIRE_TOTAL:
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ent->expire_total = expire;
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break;
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case EXPIRE_UNREACH:
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ent->expire_unreachable = expire;
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break;
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}
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return 0;
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}
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static void set_reflog_expiry_param(struct cmd_reflog_expire_cb *cb, int slot, const char *ref)
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{
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struct reflog_expire_cfg *ent;
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if (slot == (EXPIRE_TOTAL|EXPIRE_UNREACH))
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return; /* both given explicitly -- nothing to tweak */
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for (ent = reflog_expire_cfg; ent; ent = ent->next) {
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if (!wildmatch(ent->pattern, ref, 0)) {
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if (!(slot & EXPIRE_TOTAL))
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cb->expire_total = ent->expire_total;
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if (!(slot & EXPIRE_UNREACH))
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cb->expire_unreachable = ent->expire_unreachable;
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return;
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}
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}
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/*
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* If unconfigured, make stash never expire
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*/
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if (!strcmp(ref, "refs/stash")) {
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if (!(slot & EXPIRE_TOTAL))
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cb->expire_total = 0;
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if (!(slot & EXPIRE_UNREACH))
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cb->expire_unreachable = 0;
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return;
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}
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/* Nothing matched -- use the default value */
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if (!(slot & EXPIRE_TOTAL))
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cb->expire_total = default_reflog_expire;
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if (!(slot & EXPIRE_UNREACH))
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cb->expire_unreachable = default_reflog_expire_unreachable;
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}
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static int cmd_reflog_expire(int argc, const char **argv, const char *prefix)
|
|
{
|
|
struct expire_reflog_policy_cb cb;
|
|
timestamp_t 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;
|
|
git_config(reflog_expire_config, NULL);
|
|
|
|
save_commit_buffer = 0;
|
|
do_all = status = 0;
|
|
memset(&cb, 0, sizeof(cb));
|
|
|
|
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"))
|
|
flags |= EXPIRE_REFLOGS_DRY_RUN;
|
|
else if (starts_with(arg, "--expire=")) {
|
|
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.cmd.expire_unreachable))
|
|
die(_("'%s' is not a valid timestamp"), arg);
|
|
explicit_expiry |= EXPIRE_UNREACH;
|
|
}
|
|
else if (!strcmp(arg, "--stale-fix"))
|
|
cb.cmd.stalefix = 1;
|
|
else if (!strcmp(arg, "--rewrite"))
|
|
flags |= EXPIRE_REFLOGS_REWRITE;
|
|
else if (!strcmp(arg, "--updateref"))
|
|
flags |= EXPIRE_REFLOGS_UPDATE_REF;
|
|
else if (!strcmp(arg, "--all"))
|
|
do_all = 1;
|
|
else if (!strcmp(arg, "--verbose"))
|
|
flags |= EXPIRE_REFLOGS_VERBOSE;
|
|
else if (!strcmp(arg, "--")) {
|
|
i++;
|
|
break;
|
|
}
|
|
else if (arg[0] == '-')
|
|
usage(reflog_expire_usage);
|
|
else
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* We can trust the commits and objects reachable from refs
|
|
* even in older repository. We cannot trust what's reachable
|
|
* from reflog if the repository was pruned with older git.
|
|
*/
|
|
if (cb.cmd.stalefix) {
|
|
init_revisions(&cb.cmd.revs, prefix);
|
|
if (flags & EXPIRE_REFLOGS_VERBOSE)
|
|
printf("Marking reachable objects...");
|
|
mark_reachable_objects(&cb.cmd.revs, 0, 0, NULL);
|
|
if (flags & EXPIRE_REFLOGS_VERBOSE)
|
|
putchar('\n');
|
|
}
|
|
|
|
if (do_all) {
|
|
struct collect_reflog_cb collected;
|
|
int i;
|
|
|
|
memset(&collected, 0, sizeof(collected));
|
|
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.cmd, explicit_expiry, e->reflog);
|
|
status |= reflog_expire(e->reflog, &e->oid, flags,
|
|
reflog_expiry_prepare,
|
|
should_expire_reflog_ent,
|
|
reflog_expiry_cleanup,
|
|
&cb);
|
|
free(e);
|
|
}
|
|
free(collected.e);
|
|
}
|
|
|
|
for (; i < argc; i++) {
|
|
char *ref;
|
|
struct object_id oid;
|
|
if (!dwim_log(argv[i], strlen(argv[i]), &oid, &ref)) {
|
|
status |= error("%s points nowhere!", argv[i]);
|
|
continue;
|
|
}
|
|
set_reflog_expiry_param(&cb.cmd, explicit_expiry, ref);
|
|
status |= reflog_expire(ref, &oid, flags,
|
|
reflog_expiry_prepare,
|
|
should_expire_reflog_ent,
|
|
reflog_expiry_cleanup,
|
|
&cb);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
static int count_reflog_ent(struct object_id *ooid, struct object_id *noid,
|
|
const char *email, timestamp_t timestamp, int tz,
|
|
const char *message, void *cb_data)
|
|
{
|
|
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 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"))
|
|
flags |= EXPIRE_REFLOGS_DRY_RUN;
|
|
else if (!strcmp(arg, "--rewrite"))
|
|
flags |= EXPIRE_REFLOGS_REWRITE;
|
|
else if (!strcmp(arg, "--updateref"))
|
|
flags |= EXPIRE_REFLOGS_UPDATE_REF;
|
|
else if (!strcmp(arg, "--verbose"))
|
|
flags |= EXPIRE_REFLOGS_VERBOSE;
|
|
else if (!strcmp(arg, "--")) {
|
|
i++;
|
|
break;
|
|
}
|
|
else if (arg[0] == '-')
|
|
usage(reflog_delete_usage);
|
|
else
|
|
break;
|
|
}
|
|
|
|
if (argc - i < 1)
|
|
return error("Nothing to delete?");
|
|
|
|
for ( ; i < argc; i++) {
|
|
const char *spec = strstr(argv[i], "@{");
|
|
struct object_id oid;
|
|
char *ep, *ref;
|
|
int recno;
|
|
|
|
if (!spec) {
|
|
status |= error("Not a reflog: %s", argv[i]);
|
|
continue;
|
|
}
|
|
|
|
if (!dwim_log(argv[i], spec - argv[i], &oid, &ref)) {
|
|
status |= error("no reflog for '%s'", argv[i]);
|
|
continue;
|
|
}
|
|
|
|
recno = strtoul(spec + 2, &ep, 10);
|
|
if (*ep == '}') {
|
|
cb.cmd.recno = -recno;
|
|
for_each_reflog_ent(ref, count_reflog_ent, &cb);
|
|
} else {
|
|
cb.cmd.expire_total = approxidate(spec + 2);
|
|
for_each_reflog_ent(ref, count_reflog_ent, &cb);
|
|
cb.cmd.expire_total = 0;
|
|
}
|
|
|
|
status |= reflog_expire(ref, &oid, 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 | exists ]";
|
|
|
|
int cmd_reflog(int argc, const char **argv, const char *prefix)
|
|
{
|
|
if (argc > 1 && !strcmp(argv[1], "-h"))
|
|
usage(reflog_usage);
|
|
|
|
/* With no command, we default to showing it. */
|
|
if (argc < 2 || *argv[1] == '-')
|
|
return cmd_log_reflog(argc, argv, prefix);
|
|
|
|
if (!strcmp(argv[1], "show"))
|
|
return cmd_log_reflog(argc - 1, argv + 1, prefix);
|
|
|
|
if (!strcmp(argv[1], "expire"))
|
|
return cmd_reflog_expire(argc - 1, argv + 1, 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);
|
|
}
|