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midx: clear midx on repack

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If a 'git repack' command replaces existing packfiles, then we must
clear the existing multi-pack-index before moving the packfiles it
references.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2018-07-12 15:39:40 -04:00 committed by Junio C Hamano
parent 17c35c8969
commit 525e18c04b
4 changed files with 31 additions and 0 deletions
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9
builtin/repack.c
View File

@ -8,6 +8,7 @@
#include "strbuf.h"
#include "string-list.h"
#include "argv-array.h"
#include "midx.h"
static int delta_base_offset = 1;
static int pack_kept_objects = -1;
@ -174,6 +175,7 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
int no_update_server_info = 0;
int quiet = 0;
int local = 0;
int midx_cleared = 0;
struct option builtin_repack_options[] = {
OPT_BIT('a', NULL, &pack_everything,
@ -333,6 +335,13 @@ int cmd_repack(int argc, const char **argv, const char *prefix)
for_each_string_list_item(item, &names) {
for (ext = 0; ext < ARRAY_SIZE(exts); ext++) {
char *fname, *fname_old;
if (!midx_cleared) {
/* if we move a packfile, it will invalidated the midx */
clear_midx_file(get_object_directory());
midx_cleared = 1;
}
fname = mkpathdup("%s/pack-%s%s", packdir,
item->string, exts[ext].name);
if (!file_exists(fname)) {

12
midx.c
View File

@ -904,3 +904,15 @@ cleanup:
free(midx_name);
return 0;
}
void clear_midx_file(const char *object_dir)
{
char *midx = get_midx_filename(object_dir);
if (remove_path(midx)) {
UNLEAK(midx);
die(_("failed to clear multi-pack-index at %s"), midx);
}
free(midx);
}

1
midx.h
View File

@ -39,5 +39,6 @@ int midx_contains_pack(struct multi_pack_index *m, const char *idx_name);
int prepare_multi_pack_index_one(struct repository *r, const char *object_dir);
int write_midx_file(const char *object_dir);
void clear_midx_file(const char *object_dir);
#endif

9
t/t5319-multi-pack-index.sh
View File

@ -141,6 +141,15 @@ test_expect_success 'write midx with twelve packs' '
compare_results_with_midx "twelve packs"
test_expect_success 'repack removes multi-pack-index' '
test_path_is_file $objdir/pack/multi-pack-index &&
git repack -adf &&
test_path_is_missing $objdir/pack/multi-pack-index
'
compare_results_with_midx "after repack"
# usage: corrupt_data <file> <pos> [<data>]
corrupt_data () {
file=$1