Fix core.sharedRepository = 2

For compatibility reasons, "git init --shared=all" does not write
"all" into the config, but a number.  In the shared setup, you
really have to support even older clients on the _same_ repository.

But git_config_perm() did not pick up on it.

Also, "git update-server-info" failed to pick up on the shared
permissions.

This patch fixes both issues, and adds a test to prove it.
Signed-off-by: NJohannes Schindelin <johannes.schindelin@gmx.de>
Tested-by: Nmartin f krafft <madduck@madduck.net>
Signed-off-by: NJunio C Hamano <gitster@pobox.com>

server-info.c

@@ -38,6 +38,7 @@ static int update_info_refs(int force)
 		return error("unable to update %s", path0);
 	for_each_ref(add_info_ref, NULL);
 	fclose(info_ref_fp);
+	adjust_shared_perm(path1);
 	rename(path1, path0);
 	free(path0);
 	free(path1);
@@ -227,6 +228,7 @@ static int update_info_packs(int force)
 		return error("cannot open %s", name);
 	write_pack_info_file(fp);
 	fclose(fp);
+	adjust_shared_perm(name);
 	rename(name, infofile);
 	return 0;
 }

setup.c

@@ -364,6 +364,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
 int git_config_perm(const char *var, const char *value)
 {
 	if (value) {
+		int i;
 		if (!strcmp(value, "umask"))
 			return PERM_UMASK;
 		if (!strcmp(value, "group"))
@@ -372,6 +373,9 @@ int git_config_perm(const char *var, const char *value)
 		    !strcmp(value, "world") ||
 		    !strcmp(value, "everybody"))
 			return PERM_EVERYBODY;
+		i = atoi(value);
+		if (i > 1)
+			return i;
 	}
 	return git_config_bool(var, value);
 }

t/t1301-shared-repo.sh

+#!/bin/sh
+#
+# Copyright (c) 2007 Johannes Schindelin
+#
+
+test_description='Test shared repository initialization'
+
+. ./test-lib.sh
+
+test_expect_success 'shared=all' '
+	mkdir sub &&
+	cd sub &&
+	git init --shared=all &&
+	test 2 = $(git config core.sharedrepository)
+'
+
+test_expect_success 'update-server-info honors core.sharedRepository' '
+	: > a1 &&
+	git add a1 &&
+	test_tick &&
+	git commit -m a1 &&
+	umask 0277 &&
+	git update-server-info &&
+	test 444 = $(stat -c %a .git/info/refs)
+'
+
+test_done