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allow forcing index v2 and 64-bit offset treshold
This is necessary for testing the new capabilities in some automated way without having an actual 4GB+ pack. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Junio C Hamano <junkio@cox.net>
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@ -597,6 +597,9 @@ static off_t write_pack_file(void)
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return last_obj_offset;
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}
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static uint32_t index_default_version = 1;
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static uint32_t index_off32_limit = 0x7fffffff;
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static void write_index_file(off_t last_obj_offset)
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{
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uint32_t i;
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@ -608,7 +611,7 @@ static void write_index_file(off_t last_obj_offset)
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uint32_t index_version;
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/* if last object's offset is >= 2^31 we should use index V2 */
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index_version = (last_obj_offset >> 31) ? 2 : 1;
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index_version = (last_obj_offset >> 31) ? 2 : index_default_version;
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/* index versions 2 and above need a header */
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if (index_version >= 2) {
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@ -664,7 +667,7 @@ static void write_index_file(off_t last_obj_offset)
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list = sorted_by_sha;
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for (i = 0; i < nr_objects; i++) {
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struct object_entry *entry = *list++;
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uint32_t offset = (entry->offset <= 0x7fffffff) ?
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uint32_t offset = (entry->offset <= index_off32_limit) ?
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entry->offset : (0x80000000 | nr_large_offset++);
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offset = htonl(offset);
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sha1write(f, &offset, 4);
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@ -675,7 +678,7 @@ static void write_index_file(off_t last_obj_offset)
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while (nr_large_offset) {
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struct object_entry *entry = *list++;
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uint64_t offset = entry->offset;
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if (offset > 0x7fffffff) {
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if (offset > index_off32_limit) {
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uint32_t split[2];
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split[0] = htonl(offset >> 32);
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split[1] = htonl(offset & 0xffffffff);
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@ -1714,6 +1717,17 @@ int cmd_pack_objects(int argc, const char **argv, const char *prefix)
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rp_av[1] = "--objects-edge";
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continue;
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}
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if (!prefixcmp(arg, "--index-version=")) {
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char *c;
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index_default_version = strtoul(arg + 16, &c, 10);
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if (index_default_version > 2)
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die("bad %s", arg);
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if (*c == ',')
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index_off32_limit = strtoul(c+1, &c, 0);
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if (*c || index_off32_limit & 0x80000000)
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die("bad %s", arg);
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continue;
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}
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usage(pack_usage);
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}
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18
index-pack.c
18
index-pack.c
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@ -671,6 +671,9 @@ static void readjust_pack_header_and_sha1(unsigned char *sha1)
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write_or_die(output_fd, sha1, 20);
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}
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static uint32_t index_default_version = 1;
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static uint32_t index_off32_limit = 0x7fffffff;
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static int sha1_compare(const void *_a, const void *_b)
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{
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struct object_entry *a = *(struct object_entry **)_a;
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@ -719,7 +722,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
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f = sha1fd(fd, index_name);
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/* if last object's offset is >= 2^31 we should use index V2 */
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index_version = (objects[nr_objects-1].offset >> 31) ? 2 : 1;
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index_version = (objects[nr_objects-1].offset >> 31) ? 2 : index_default_version;
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/* index versions 2 and above need a header */
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if (index_version >= 2) {
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@ -779,7 +782,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
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list = sorted_by_sha;
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for (i = 0; i < nr_objects; i++) {
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struct object_entry *obj = *list++;
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uint32_t offset = (obj->offset <= 0x7fffffff) ?
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uint32_t offset = (obj->offset <= index_off32_limit) ?
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obj->offset : (0x80000000 | nr_large_offset++);
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offset = htonl(offset);
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sha1write(f, &offset, 4);
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@ -790,7 +793,7 @@ static const char *write_index_file(const char *index_name, unsigned char *sha1)
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while (nr_large_offset) {
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struct object_entry *obj = *list++;
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uint64_t offset = obj->offset;
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if (offset > 0x7fffffff) {
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if (offset > index_off32_limit) {
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uint32_t split[2];
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split[0] = htonl(offset >> 32);
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split[1] = htonl(offset & 0xffffffff);
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@ -929,6 +932,15 @@ int main(int argc, char **argv)
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if (index_name || (i+1) >= argc)
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usage(index_pack_usage);
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index_name = argv[++i];
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} else if (!prefixcmp(arg, "--index-version=")) {
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char *c;
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index_default_version = strtoul(arg + 16, &c, 10);
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if (index_default_version > 2)
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die("bad %s", arg);
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if (*c == ',')
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index_off32_limit = strtoul(c+1, &c, 0);
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if (*c || index_off32_limit & 0x80000000)
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die("bad %s", arg);
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} else
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usage(index_pack_usage);
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continue;
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