[PATCH v2 3/3] receive-pack: use index-pack --unpack-limit instead of unpack-objects

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Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx>
---
 builtin/receive-pack.c | 122 ++++++++++++++-----------------------------------
 1 file changed, 34 insertions(+), 88 deletions(-)

diff --git a/builtin/receive-pack.c b/builtin/receive-pack.c
index e3eb5fc..0a84a61 100644
--- a/builtin/receive-pack.c
+++ b/builtin/receive-pack.c
@@ -792,105 +792,51 @@ static struct command *read_head_info(void)
 	return commands;
 }
 
-static const char *parse_pack_header(struct pack_header *hdr)
-{
-	switch (read_pack_header(0, hdr)) {
-	case PH_ERROR_EOF:
-		return "eof before pack header was fully read";
-
-	case PH_ERROR_PACK_SIGNATURE:
-		return "protocol error (pack signature mismatch detected)";
-
-	case PH_ERROR_PROTOCOL:
-		return "protocol error (pack version unsupported)";
-
-	default:
-		return "unknown error in parse_pack_header";
-
-	case 0:
-		return NULL;
-	}
-}
-
 static const char *pack_lockfile;
 
 static const char *unpack(int err_fd)
 {
-	struct pack_header hdr;
-	const char *hdr_err;
-	char hdr_arg[38];
 	int fsck_objects = (receive_fsck_objects >= 0
 			    ? receive_fsck_objects
 			    : transfer_fsck_objects >= 0
 			    ? transfer_fsck_objects
 			    : 0);
 
-	hdr_err = parse_pack_header(&hdr);
-	if (hdr_err) {
-		if (err_fd > 0)
-			close(err_fd);
-		return hdr_err;
-	}
-	snprintf(hdr_arg, sizeof(hdr_arg),
-			"--pack_header=%"PRIu32",%"PRIu32,
-			ntohl(hdr.hdr_version), ntohl(hdr.hdr_entries));
-
-	if (ntohl(hdr.hdr_entries) < unpack_limit) {
-		int code, i = 0;
-		struct child_process child;
-		const char *unpacker[5];
-		unpacker[i++] = "unpack-objects";
-		if (quiet)
-			unpacker[i++] = "-q";
-		if (fsck_objects)
-			unpacker[i++] = "--strict";
-		unpacker[i++] = hdr_arg;
-		unpacker[i++] = NULL;
-		memset(&child, 0, sizeof(child));
-		child.argv = unpacker;
-		child.no_stdout = 1;
-		child.err = err_fd;
-		child.git_cmd = 1;
-		code = run_command(&child);
-		if (!code)
-			return NULL;
-		return "unpack-objects abnormal exit";
-	} else {
-		const char *keeper[7];
-		int s, status, i = 0;
-		char keep_arg[256];
-		struct child_process ip;
-
-		s = sprintf(keep_arg, "--keep=receive-pack %"PRIuMAX" on ", (uintmax_t) getpid());
-		if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
-			strcpy(keep_arg + s, "localhost");
-
-		keeper[i++] = "index-pack";
-		keeper[i++] = "--stdin";
-		if (fsck_objects)
-			keeper[i++] = "--strict";
-		keeper[i++] = "--fix-thin";
-		keeper[i++] = hdr_arg;
-		keeper[i++] = keep_arg;
-		keeper[i++] = NULL;
-		memset(&ip, 0, sizeof(ip));
-		ip.argv = keeper;
-		ip.out = -1;
-		ip.err = err_fd;
-		ip.git_cmd = 1;
-		status = start_command(&ip);
-		if (status) {
-			return "index-pack fork failed";
-		}
-		pack_lockfile = index_pack_lockfile(ip.out);
-		close(ip.out);
-		status = finish_command(&ip);
-		if (!status) {
-			reprepare_packed_git();
-			return NULL;
-		}
+	const char *keeper[7];
+	int s, status, i = 0;
+	char keep_arg[256];
+	char unpack_limit_arg[256];
+	struct child_process ip;
+
+	s = sprintf(keep_arg, "--keep=receive-pack %"PRIuMAX" on ", (uintmax_t) getpid());
+	if (gethostname(keep_arg + s, sizeof(keep_arg) - s))
+		strcpy(keep_arg + s, "localhost");
+	sprintf(unpack_limit_arg, "--unpack-limit=%u", unpack_limit);
+
+	keeper[i++] = "index-pack";
+	keeper[i++] = "--stdin";
+	if (fsck_objects)
+		keeper[i++] = "--strict";
+	keeper[i++] = "--fix-thin";
+	keeper[i++] = keep_arg;
+	keeper[i++] = unpack_limit_arg;
+	keeper[i++] = NULL;
+	memset(&ip, 0, sizeof(ip));
+	ip.argv = keeper;
+	ip.out = -1;
+	ip.err = err_fd;
+	ip.git_cmd = 1;
+	status = start_command(&ip);
+	if (status)
+		return "index-pack fork failed";
+	pack_lockfile = index_pack_lockfile(ip.out);
+	close(ip.out);
+	status = finish_command(&ip);
+	if (status)
 		return "index-pack abnormal exit";
-	}
+	if (pack_lockfile)
+		reprepare_packed_git();
+	return NULL;
 }
 
 static const char *unpack_with_sideband(void)
-- 
1.8.2.83.gc99314b

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