Merge branch 'jh/clone-packed-refs'
* jh/clone-packed-refs: Teach "git clone" to pack refs Prepare testsuite for a "git clone" that packs refs Move pack_refs() and friends into libgit Incorporate fetched packs in future object traversal
This commit is contained in:
Junio C Hamano
commit
01d8ff70f4
2
Makefile
2
Makefile
@ -354,6 +354,7 @@ LIB_H += log-tree.h
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LIB_H += mailmap.h
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LIB_H += object.h
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LIB_H += pack.h
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LIB_H += pack-refs.h
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LIB_H += pack-revindex.h
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LIB_H += parse-options.h
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LIB_H += patch-ids.h
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@ -429,6 +430,7 @@ LIB_OBJS += merge-file.o
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LIB_OBJS += name-hash.o
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LIB_OBJS += object.o
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LIB_OBJS += pack-check.o
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LIB_OBJS += pack-refs.o
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LIB_OBJS += pack-revindex.o
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LIB_OBJS += pack-write.o
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LIB_OBJS += pager.o
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@ -18,6 +18,7 @@
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#include "transport.h"
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#include "strbuf.h"
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#include "dir.h"
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#include "pack-refs.h"
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/*
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* Overall FIXMEs:
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@ -321,8 +322,11 @@ static struct ref *write_remote_refs(const struct ref *refs,
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get_fetch_map(refs, tag_refspec, &tail, 0);
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for (r = local_refs; r; r = r->next)
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update_ref(reflog,
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r->peer_ref->name, r->old_sha1, NULL, 0, DIE_ON_ERR);
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add_extra_ref(r->peer_ref->name, r->old_sha1, 0);
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pack_refs(PACK_REFS_ALL);
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clear_extra_refs();
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return local_refs;
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}
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@ -820,5 +820,6 @@ struct ref *fetch_pack(struct fetch_pack_args *my_args,
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}
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}
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reprepare_packed_git();
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return ref_cpy;
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}
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@ -1,125 +1,6 @@
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#include "builtin.h"
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#include "cache.h"
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#include "refs.h"
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#include "object.h"
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#include "tag.h"
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#include "parse-options.h"
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struct ref_to_prune {
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struct ref_to_prune *next;
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unsigned char sha1[20];
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char name[FLEX_ARRAY];
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};
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#define PACK_REFS_PRUNE 0x0001
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#define PACK_REFS_ALL 0x0002
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struct pack_refs_cb_data {
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unsigned int flags;
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struct ref_to_prune *ref_to_prune;
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FILE *refs_file;
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};
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static int do_not_prune(int flags)
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{
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/* If it is already packed or if it is a symref,
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* do not prune it.
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*/
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return (flags & (REF_ISSYMREF|REF_ISPACKED));
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}
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static int handle_one_ref(const char *path, const unsigned char *sha1,
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int flags, void *cb_data)
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{
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struct pack_refs_cb_data *cb = cb_data;
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int is_tag_ref;
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/* Do not pack the symbolic refs */
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if ((flags & REF_ISSYMREF))
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return 0;
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is_tag_ref = !prefixcmp(path, "refs/tags/");
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/* ALWAYS pack refs that were already packed or are tags */
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if (!(cb->flags & PACK_REFS_ALL) && !is_tag_ref && !(flags & REF_ISPACKED))
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return 0;
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fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path);
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if (is_tag_ref) {
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struct object *o = parse_object(sha1);
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if (o->type == OBJ_TAG) {
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o = deref_tag(o, path, 0);
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if (o)
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fprintf(cb->refs_file, "^%s\n",
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sha1_to_hex(o->sha1));
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}
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}
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if ((cb->flags & PACK_REFS_PRUNE) && !do_not_prune(flags)) {
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int namelen = strlen(path) + 1;
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struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen);
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hashcpy(n->sha1, sha1);
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strcpy(n->name, path);
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n->next = cb->ref_to_prune;
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cb->ref_to_prune = n;
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}
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return 0;
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}
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/* make sure nobody touched the ref, and unlink */
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static void prune_ref(struct ref_to_prune *r)
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{
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struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1);
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if (lock) {
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unlink(git_path("%s", r->name));
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unlock_ref(lock);
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}
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}
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static void prune_refs(struct ref_to_prune *r)
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{
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while (r) {
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prune_ref(r);
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r = r->next;
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}
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}
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static struct lock_file packed;
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static int pack_refs(unsigned int flags)
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{
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int fd;
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struct pack_refs_cb_data cbdata;
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memset(&cbdata, 0, sizeof(cbdata));
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cbdata.flags = flags;
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fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
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cbdata.refs_file = fdopen(fd, "w");
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if (!cbdata.refs_file)
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die("unable to create ref-pack file structure (%s)",
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strerror(errno));
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/* perhaps other traits later as well */
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fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
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for_each_ref(handle_one_ref, &cbdata);
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if (ferror(cbdata.refs_file))
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die("failed to write ref-pack file");
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if (fflush(cbdata.refs_file) || fsync(fd) || fclose(cbdata.refs_file))
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die("failed to write ref-pack file (%s)", strerror(errno));
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/*
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* Since the lock file was fdopen()'ed and then fclose()'ed above,
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* assign -1 to the lock file descriptor so that commit_lock_file()
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* won't try to close() it.
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*/
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packed.fd = -1;
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if (commit_lock_file(&packed) < 0)
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die("unable to overwrite old ref-pack file (%s)", strerror(errno));
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if (cbdata.flags & PACK_REFS_PRUNE)
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prune_refs(cbdata.ref_to_prune);
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return 0;
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}
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#include "pack-refs.h"
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static char const * const pack_refs_usage[] = {
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"git-pack-refs [options]",
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117
pack-refs.c
Normal file
117
pack-refs.c
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@ -0,0 +1,117 @@
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#include "cache.h"
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#include "refs.h"
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#include "tag.h"
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#include "pack-refs.h"
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struct ref_to_prune {
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struct ref_to_prune *next;
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unsigned char sha1[20];
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char name[FLEX_ARRAY];
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};
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struct pack_refs_cb_data {
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unsigned int flags;
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struct ref_to_prune *ref_to_prune;
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FILE *refs_file;
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};
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static int do_not_prune(int flags)
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{
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/* If it is already packed or if it is a symref,
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* do not prune it.
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*/
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return (flags & (REF_ISSYMREF|REF_ISPACKED));
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}
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static int handle_one_ref(const char *path, const unsigned char *sha1,
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int flags, void *cb_data)
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{
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struct pack_refs_cb_data *cb = cb_data;
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int is_tag_ref;
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/* Do not pack the symbolic refs */
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if ((flags & REF_ISSYMREF))
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return 0;
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is_tag_ref = !prefixcmp(path, "refs/tags/");
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/* ALWAYS pack refs that were already packed or are tags */
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if (!(cb->flags & PACK_REFS_ALL) && !is_tag_ref && !(flags & REF_ISPACKED))
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return 0;
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fprintf(cb->refs_file, "%s %s\n", sha1_to_hex(sha1), path);
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if (is_tag_ref) {
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struct object *o = parse_object(sha1);
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if (o->type == OBJ_TAG) {
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o = deref_tag(o, path, 0);
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if (o)
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fprintf(cb->refs_file, "^%s\n",
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sha1_to_hex(o->sha1));
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}
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}
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if ((cb->flags & PACK_REFS_PRUNE) && !do_not_prune(flags)) {
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int namelen = strlen(path) + 1;
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struct ref_to_prune *n = xcalloc(1, sizeof(*n) + namelen);
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hashcpy(n->sha1, sha1);
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strcpy(n->name, path);
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n->next = cb->ref_to_prune;
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cb->ref_to_prune = n;
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}
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return 0;
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}
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/* make sure nobody touched the ref, and unlink */
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static void prune_ref(struct ref_to_prune *r)
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{
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struct ref_lock *lock = lock_ref_sha1(r->name + 5, r->sha1);
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if (lock) {
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unlink(git_path("%s", r->name));
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unlock_ref(lock);
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}
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}
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static void prune_refs(struct ref_to_prune *r)
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{
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while (r) {
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prune_ref(r);
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r = r->next;
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}
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}
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static struct lock_file packed;
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int pack_refs(unsigned int flags)
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{
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int fd;
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struct pack_refs_cb_data cbdata;
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memset(&cbdata, 0, sizeof(cbdata));
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cbdata.flags = flags;
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fd = hold_lock_file_for_update(&packed, git_path("packed-refs"), 1);
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cbdata.refs_file = fdopen(fd, "w");
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if (!cbdata.refs_file)
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die("unable to create ref-pack file structure (%s)",
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strerror(errno));
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/* perhaps other traits later as well */
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fprintf(cbdata.refs_file, "# pack-refs with: peeled \n");
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for_each_ref(handle_one_ref, &cbdata);
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if (ferror(cbdata.refs_file))
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die("failed to write ref-pack file");
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if (fflush(cbdata.refs_file) || fsync(fd) || fclose(cbdata.refs_file))
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die("failed to write ref-pack file (%s)", strerror(errno));
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/*
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* Since the lock file was fdopen()'ed and then fclose()'ed above,
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* assign -1 to the lock file descriptor so that commit_lock_file()
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* won't try to close() it.
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*/
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packed.fd = -1;
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if (commit_lock_file(&packed) < 0)
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die("unable to overwrite old ref-pack file (%s)", strerror(errno));
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if (cbdata.flags & PACK_REFS_PRUNE)
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prune_refs(cbdata.ref_to_prune);
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return 0;
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}
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18
pack-refs.h
Normal file
18
pack-refs.h
Normal file
@ -0,0 +1,18 @@
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#ifndef PACK_REFS_H
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#define PACK_REFS_H
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/*
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* Flags for controlling behaviour of pack_refs()
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* PACK_REFS_PRUNE: Prune loose refs after packing
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* PACK_REFS_ALL: Pack _all_ refs, not just tags and already packed refs
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*/
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#define PACK_REFS_PRUNE 0x0001
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#define PACK_REFS_ALL 0x0002
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/*
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* Write a packed-refs file for the current repository.
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* flags: Combination of the above PACK_REFS_* flags.
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*/
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int pack_refs(unsigned int flags);
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#endif /* PACK_REFS_H */
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@ -142,9 +142,12 @@ do
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set x $cmd; shift
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git symbolic-ref HEAD refs/heads/$1 ; shift
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rm -f .git/FETCH_HEAD
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rm -f .git/refs/heads/*
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rm -f .git/refs/remotes/rem/*
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rm -f .git/refs/tags/*
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git for-each-ref \
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refs/heads refs/remotes/rem refs/tags |
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while read val type refname
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do
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git update-ref -d "$refname" "$val"
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done
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git fetch "$@" >/dev/null
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cat .git/FETCH_HEAD
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} >"$actual_f" &&
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