Imported Upstream version 2.10.1
[platform/upstream/git.git] / bundle.c
index 2e2dbd5..bbf4efa 100644 (file)
--- a/bundle.c
+++ b/bundle.c
@@ -171,7 +171,7 @@ int verify_bundle(struct bundle_header *header, int verbose)
                if (!(refs.objects[i].item->flags & SHOWN)) {
                        if (++ret == 1)
                                error("%s", message);
-                       error("%s %s", sha1_to_hex(refs.objects[i].item->sha1),
+                       error("%s %s", oid_to_hex(&refs.objects[i].item->oid),
                                refs.objects[i].name);
                }
 
@@ -217,7 +217,7 @@ static int is_tag_in_date_range(struct object *tag, struct rev_info *revs)
        if (revs->max_age == -1 && revs->min_age == -1)
                goto out;
 
-       buf = read_sha1_file(tag->sha1, &type, &size);
+       buf = read_sha1_file(tag->oid.hash, &type, &size);
        if (!buf)
                goto out;
        line = memmem(buf, size, "\ntagger ", 8);
@@ -235,7 +235,9 @@ out:
        return result;
 }
 
-static int write_pack_data(int bundle_fd, struct lock_file *lock, struct rev_info *revs)
+
+/* Write the pack data to bundle_fd, then close it if it is > 1. */
+static int write_pack_data(int bundle_fd, struct rev_info *revs)
 {
        struct child_process pack_objects = CHILD_PROCESS_INIT;
        int i;
@@ -250,18 +252,11 @@ static int write_pack_data(int bundle_fd, struct lock_file *lock, struct rev_inf
        if (start_command(&pack_objects))
                return error(_("Could not spawn pack-objects"));
 
-       /*
-        * start_command closed bundle_fd if it was > 1
-        * so set the lock fd to -1 so commit_lock_file()
-        * won't fail trying to close it.
-        */
-       lock->fd = -1;
-
        for (i = 0; i < revs->pending.nr; i++) {
                struct object *object = revs->pending.objects[i].item;
                if (object->flags & UNINTERESTING)
                        write_or_die(pack_objects.in, "^", 1);
-               write_or_die(pack_objects.in, sha1_to_hex(object->sha1), 40);
+               write_or_die(pack_objects.in, oid_to_hex(&object->oid), GIT_SHA1_HEXSZ);
                write_or_die(pack_objects.in, "\n", 1);
        }
        close(pack_objects.in);
@@ -326,23 +321,23 @@ static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
 
        for (i = 0; i < revs->pending.nr; i++) {
                struct object_array_entry *e = revs->pending.objects + i;
-               unsigned char sha1[20];
+               struct object_id oid;
                char *ref;
                const char *display_ref;
                int flag;
 
                if (e->item->flags & UNINTERESTING)
                        continue;
-               if (dwim_ref(e->name, strlen(e->name), sha1, &ref) != 1)
-                       continue;
-               if (read_ref_full(e->name, RESOLVE_REF_READING, sha1, &flag))
+               if (dwim_ref(e->name, strlen(e->name), oid.hash, &ref) != 1)
+                       goto skip_write_ref;
+               if (read_ref_full(e->name, RESOLVE_REF_READING, oid.hash, &flag))
                        flag = 0;
                display_ref = (flag & REF_ISSYMREF) ? e->name : ref;
 
                if (e->item->type == OBJ_TAG &&
                                !is_tag_in_date_range(e->item, revs)) {
                        e->item->flags |= UNINTERESTING;
-                       continue;
+                       goto skip_write_ref;
                }
 
                /*
@@ -357,8 +352,7 @@ static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
                if (!(e->item->flags & SHOWN) && e->item->type == OBJ_COMMIT) {
                        warning(_("ref '%s' is excluded by the rev-list options"),
                                e->name);
-                       free(ref);
-                       continue;
+                       goto skip_write_ref;
                }
                /*
                 * If you run "git bundle create bndl v1.0..v2.0", the
@@ -366,13 +360,13 @@ static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
                 * commit that is referenced by the tag, and not the tag
                 * itself.
                 */
-               if (hashcmp(sha1, e->item->sha1)) {
+               if (oidcmp(&oid, &e->item->oid)) {
                        /*
                         * Is this the positive end of a range expressed
                         * in terms of a tag (e.g. v2.0 from the range
                         * "v1.0..v2.0")?
                         */
-                       struct commit *one = lookup_commit_reference(sha1);
+                       struct commit *one = lookup_commit_reference(oid.hash);
                        struct object *obj;
 
                        if (e->item == &(one->object)) {
@@ -384,19 +378,19 @@ static int write_bundle_refs(int bundle_fd, struct rev_info *revs)
                                 * end up triggering "empty bundle"
                                 * error.
                                 */
-                               obj = parse_object_or_die(sha1, e->name);
+                               obj = parse_object_or_die(oid.hash, e->name);
                                obj->flags |= SHOWN;
                                add_pending_object(revs, obj, e->name);
                        }
-                       free(ref);
-                       continue;
+                       goto skip_write_ref;
                }
 
                ref_count++;
-               write_or_die(bundle_fd, sha1_to_hex(e->item->sha1), 40);
+               write_or_die(bundle_fd, oid_to_hex(&e->item->oid), 40);
                write_or_die(bundle_fd, " ", 1);
                write_or_die(bundle_fd, display_ref, strlen(display_ref));
                write_or_die(bundle_fd, "\n", 1);
+ skip_write_ref:
                free(ref);
        }
 
@@ -417,10 +411,21 @@ int create_bundle(struct bundle_header *header, const char *path,
        bundle_to_stdout = !strcmp(path, "-");
        if (bundle_to_stdout)
                bundle_fd = 1;
-       else
+       else {
                bundle_fd = hold_lock_file_for_update(&lock, path,
                                                      LOCK_DIE_ON_ERROR);
 
+               /*
+                * write_pack_data() will close the fd passed to it,
+                * but commit_lock_file() will also try to close the
+                * lockfile's fd. So make a copy of the file
+                * descriptor to avoid trying to close it twice.
+                */
+               bundle_fd = dup(bundle_fd);
+               if (bundle_fd < 0)
+                       die_errno("unable to dup file descriptor");
+       }
+
        /* write signature */
        write_or_die(bundle_fd, bundle_signature, strlen(bundle_signature));
 
@@ -430,12 +435,14 @@ int create_bundle(struct bundle_header *header, const char *path,
 
        /* write prerequisites */
        if (compute_and_write_prerequisites(bundle_fd, &revs, argc, argv))
-               return -1;
+               goto err;
 
        argc = setup_revisions(argc, argv, &revs, NULL);
 
-       if (argc > 1)
-               return error(_("unrecognized argument: %s"), argv[1]);
+       if (argc > 1) {
+               error(_("unrecognized argument: %s"), argv[1]);
+               goto err;
+       }
 
        object_array_remove_duplicates(&revs.pending);
 
@@ -443,17 +450,26 @@ int create_bundle(struct bundle_header *header, const char *path,
        if (!ref_count)
                die(_("Refusing to create empty bundle."));
        else if (ref_count < 0)
-               return -1;
+               goto err;
 
        /* write pack */
-       if (write_pack_data(bundle_fd, &lock, &revs))
-               return -1;
+       if (write_pack_data(bundle_fd, &revs)) {
+               bundle_fd = -1; /* already closed by the above call */
+               goto err;
+       }
 
        if (!bundle_to_stdout) {
                if (commit_lock_file(&lock))
                        die_errno(_("cannot create '%s'"), path);
        }
        return 0;
+err:
+       if (!bundle_to_stdout) {
+               if (0 <= bundle_fd)
+                       close(bundle_fd);
+               rollback_lock_file(&lock);
+       }
+       return -1;
 }
 
 int unbundle(struct bundle_header *header, int bundle_fd, int flags)