Change xdl_merge to generate output even for null merges

diff --git a/builtin-pack-objects.c b/builtin-pack-objects.c
index 501f9367cb81b3eacce6ef0499a0d0858c6a2843..a6adc8c271e20374b86462391016897f1d17a0f3 100644 (file)
--- a/builtin-pack-objects.c
+++ b/builtin-pack-objects.c
@@ -23,7 +23,7 @@
 #endif
 
 static const char pack_usage[] = "\
-git-pack-objects [{ -q | --progress | --all-progress }] \n\
+git pack-objects [{ -q | --progress | --all-progress }] \n\
        [--max-pack-size=N] [--local] [--incremental] \n\
        [--window=N] [--window-memory=N] [--depth=N] \n\
        [--no-reuse-delta] [--no-reuse-object] [--delta-base-offset] \n\
@@ -71,6 +71,7 @@ static int reuse_delta = 1, reuse_object = 1;
 static int keep_unreachable, unpack_unreachable, include_tag;
 static int local;
 static int incremental;
+static int ignore_packed_keep;
 static int allow_ofs_delta;
 static const char *base_name;
 static int progress = 1;
@@ -245,8 +246,16 @@ static unsigned long write_object(struct sha1file *f,
        type = entry->type;
 
        /* write limit if limited packsize and not first object */
-       limit = pack_size_limit && nr_written ?
-                       pack_size_limit - write_offset : 0;
+       if (!pack_size_limit || !nr_written)
+               limit = 0;
+       else if (pack_size_limit <= write_offset)
+               /*
+                * the earlier object did not fit the limit; avoid
+                * mistaking this with unlimited (i.e. limit = 0).
+                */
+               limit = 1;
+       else
+               limit = pack_size_limit - write_offset;
 
        if (!entry->delta)
                usable_delta = 0;       /* no delta */
@@ -465,7 +474,7 @@ static void write_pack_file(void)
                        char tmpname[PATH_MAX];
                        int fd;
                        snprintf(tmpname, sizeof(tmpname),
-                                "%s/tmp_pack_XXXXXX", get_object_directory());
+                                "%s/pack/tmp_pack_XXXXXX", get_object_directory());
                        fd = xmkstemp(tmpname);
                        pack_tmp_name = xstrdup(tmpname);
                        f = sha1fd(fd, pack_tmp_name);
@@ -492,9 +501,9 @@ static void write_pack_file(void)
                } else if (nr_written == nr_remaining) {
                        sha1close(f, sha1, CSUM_FSYNC);
                } else {
-                       int fd = sha1close(f, NULL, 0);
+                       int fd = sha1close(f, sha1, 0);
                        fixup_pack_header_footer(fd, sha1, pack_tmp_name,
-                                                nr_written, NULL, 0);
+                                                nr_written, sha1, offset);
                        close(fd);
                }
 
@@ -511,6 +520,7 @@ static void write_pack_file(void)
 
                        snprintf(tmpname, sizeof(tmpname), "%s-%s.pack",
                                 base_name, sha1_to_hex(sha1));
+                       free_pack_by_name(tmpname);
                        if (adjust_perm(pack_tmp_name, mode))
                                die("unable to make temporary pack file readable: %s",
                                    strerror(errno));
@@ -690,6 +700,9 @@ static int add_object_entry(const unsigned char *sha1, enum object_type type,
                return 0;
        }
 
+       if (!exclude && local && has_loose_object_nonlocal(sha1))
+               return 0;
+
        for (p = packed_git; p; p = p->next) {
                off_t offset = find_pack_entry_one(sha1, p);
                if (offset) {
@@ -703,6 +716,8 @@ static int add_object_entry(const unsigned char *sha1, enum object_type type,
                                return 0;
                        if (local && !p->pack_local)
                                return 0;
+                       if (ignore_packed_keep && p->pack_local && p->pack_keep)
+                               return 0;
                }
        }
 
@@ -1091,9 +1106,12 @@ static void check_object(struct object_entry *entry)
        }
 
        entry->type = sha1_object_info(entry->idx.sha1, &entry->size);
-       if (entry->type < 0)
-               die("unable to get type of object %s",
-                   sha1_to_hex(entry->idx.sha1));
+       /*
+        * The error condition is checked in prepare_pack().  This is
+        * to permit a missing preferred base object to be ignored
+        * as a preferred base.  Doing so can result in a larger
+        * pack file, but the transfer will still take place.
+        */
 }
 
 static int pack_offset_sort(const void *_a, const void *_b)
@@ -1247,7 +1265,7 @@ static int try_delta(struct unpacked *trg, struct unpacked *src,
                max_size = trg_entry->delta_size;
                ref_depth = trg->depth;
        }
-       max_size = max_size * (max_depth - src->depth) /
+       max_size = (uint64_t)max_size * (max_depth - src->depth) /
                                                (max_depth - ref_depth + 1);
        if (max_size == 0)
                return 0;
@@ -1374,7 +1392,7 @@ static void find_deltas(struct object_entry **list, unsigned *list_size,
        memset(array, 0, array_size);
 
        for (;;) {
-               struct object_entry *entry = *list++;
+               struct object_entry *entry;
                struct unpacked *n = array + idx;
                int j, max_depth, best_base = -1;
 
@@ -1383,6 +1401,7 @@ static void find_deltas(struct object_entry **list, unsigned *list_size,
                        progress_unlock();
                        break;
                }
+               entry = *list++;
                (*list_size)--;
                if (!entry->preferred_base) {
                        (*processed)++;
@@ -1717,8 +1736,12 @@ static void prepare_pack(int window, int depth)
                if (entry->no_try_delta)
                        continue;
 
-               if (!entry->preferred_base)
+               if (!entry->preferred_base) {
                        nr_deltas++;
+                       if (entry->type < 0)
+                               die("unable to get type of object %s",
+                                   sha1_to_hex(entry->idx.sha1));
+               }
 
                delta_list[n++] = entry;
        }
@@ -1838,6 +1861,8 @@ static void show_object(struct object_array_entry *p)
        add_preferred_base_object(p->name);
        add_object_entry(p->item->sha1, p->item->type, p->name, 0);
        p->item->flags |= OBJECT_ADDED;
+       free((char *)p->name);
+       p->name = NULL;
 }
 
 static void show_edge(struct commit *commit)
@@ -1865,7 +1890,7 @@ static void mark_in_pack_object(struct object *object, struct packed_git *p, str
 
 /*
  * Compare the objects in the offset order, in order to emulate the
- * "git-rev-list --objects" output that produced the pack originally.
+ * "git rev-list --objects" output that produced the pack originally.
  */
 static int ofscmp(const void *a_, const void *b_)
 {
@@ -2034,6 +2059,10 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
                        incremental = 1;
                        continue;
                }
+               if (!strcmp("--honor-pack-keep", arg)) {
+                       ignore_packed_keep = 1;
+                       continue;
+               }
                if (!prefixcmp(arg, "--compression=")) {
                        char *end;
                        int level = strtoul(arg+14, &end, 0);