Merge branch 'jc/fix-2.45.1-and-friends-for-2.39' into maint-2.39

* jc/fix-2.45.1-and-friends-for-2.39:
  Revert "fsck: warn about symlink pointing inside a gitdir"
  Revert "Add a helper function to compare file contents"
  clone: drop the protections where hooks aren't run
  tests: verify that `clone -c core.hooksPath=/dev/null` works again
  Revert "core.hooksPath: add some protection while cloning"
  init: use the correct path of the templates directory again
  hook: plug a new memory leak
  ci: stop installing "gcc-13" for osx-gcc
  ci: avoid bare "gcc" for osx-gcc job
  ci: drop mention of BREW_INSTALL_PACKAGES variable
  send-email: avoid creating more than one Term::ReadLine object
  send-email: drop FakeTerm hack

Author: gitster

.github/workflows/main.yml

@@ -264,8 +264,7 @@ jobs:
             cc: clang
             pool: macos-13
           - jobname: osx-gcc
-            cc: gcc
-            cc_package: gcc-13
+            cc: gcc-13
             pool: macos-13
           - jobname: linux-gcc-default
             cc: gcc

Documentation/fsck-msgids.txt

@@ -157,18 +157,6 @@
 `nullSha1`::
 	(WARN) Tree contains entries pointing to a null sha1.
 
-`symlinkPointsToGitDir`::
-	(WARN) Symbolic link points inside a gitdir.
-
-`symlinkTargetBlob`::
-	(ERROR) A non-blob found instead of a symbolic link's target.
-
-`symlinkTargetLength`::
-	(WARN) Symbolic link target longer than maximum path length.
-
-`symlinkTargetMissing`::
-	(ERROR) Unable to read symbolic link target's blob.
-
 `treeNotSorted`::
 	(ERROR) A tree is not properly sorted.
 

Makefile

@@ -2751,7 +2751,7 @@ exec-cmd.sp exec-cmd.s exec-cmd.o: EXTRA_CPPFLAGS = \
 	'-DFALLBACK_RUNTIME_PREFIX="$(prefix_SQ)"'
 
 builtin/init-db.sp builtin/init-db.s builtin/init-db.o: GIT-PREFIX
-builtin/init-db.sp builtin/init-db.s builtin/init-db.o: EXTRA_CPPFLAGS = \
+setup.sp setup.s setup.o: EXTRA_CPPFLAGS = \
 	-DDEFAULT_GIT_TEMPLATE_DIR='"$(template_dir_SQ)"'
 
 config.sp config.s config.o: GIT-PREFIX

builtin/clone.c

@@ -937,8 +937,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	int err = 0, complete_refs_before_fetch = 1;
 	int submodule_progress;
 	int filter_submodules = 0;
-	const char *template_dir;
-	char *template_dir_dup = NULL;
 
 	struct transport_ls_refs_options transport_ls_refs_options =
 		TRANSPORT_LS_REFS_OPTIONS_INIT;
@@ -958,13 +956,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		usage_msg_opt(_("You must specify a repository to clone."),
 			builtin_clone_usage, builtin_clone_options);
 
-	xsetenv("GIT_CLONE_PROTECTION_ACTIVE", "true", 0 /* allow user override */);
-	template_dir = get_template_dir(option_template);
-	if (*template_dir && !is_absolute_path(template_dir))
-		template_dir = template_dir_dup =
-			absolute_pathdup(template_dir);
-	xsetenv("GIT_CLONE_TEMPLATE_DIR", template_dir, 1);
-
 	if (option_depth || option_since || option_not.nr)
 		deepen = 1;
 	if (option_single_branch == -1)
@@ -1112,7 +1103,7 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 		}
 	}
 
-	init_db(git_dir, real_git_dir, template_dir, GIT_HASH_UNKNOWN, NULL,
+	init_db(git_dir, real_git_dir, option_template, GIT_HASH_UNKNOWN, NULL,
 		INIT_DB_QUIET);
 
 	if (real_git_dir) {
@@ -1430,7 +1421,6 @@ int cmd_clone(int argc, const char **argv, const char *prefix)
 	free(unborn_head);
 	free(dir);
 	free(path);
-	free(template_dir_dup);
 	UNLEAK(repo);
 	junk_mode = JUNK_LEAVE_ALL;
 

cache.h

@@ -1785,20 +1785,6 @@ int copy_fd(int ifd, int ofd);
 int copy_file(const char *dst, const char *src, int mode);
 int copy_file_with_time(const char *dst, const char *src, int mode);
 
-/*
- * Compare the file mode and contents of two given files.
- *
- * If both files are actually symbolic links, the function returns 1 if the link
- * targets are identical or 0 if they are not.
- *
- * If any of the two files cannot be accessed or in case of read failures, this
- * function returns 0.
- *
- * If the file modes and contents are identical, the function returns 1,
- * otherwise it returns 0.
- */
-int do_files_match(const char *path1, const char *path2);
-
 void write_or_die(int fd, const void *buf, size_t count);
 void fsync_or_die(int fd, const char *);
 int fsync_component(enum fsync_component component, int fd);

ci/install-dependencies.sh

@@ -34,8 +34,6 @@ macos-*)
 	export HOMEBREW_NO_AUTO_UPDATE=1 HOMEBREW_NO_INSTALL_CLEANUP=1
 	# Uncomment this if you want to run perf tests:
 	# brew install gnu-time
-	test -z "$BREW_INSTALL_PACKAGES" ||
-	brew install $BREW_INSTALL_PACKAGES
 	brew link --force gettext
 	mkdir -p $HOME/bin
 	(

config.c

@@ -1525,19 +1525,8 @@ static int git_default_core_config(const char *var, const char *value, void *cb)
 	if (!strcmp(var, "core.attributesfile"))
 		return git_config_pathname(&git_attributes_file, var, value);
 
-	if (!strcmp(var, "core.hookspath")) {
-		if (current_config_scope() == CONFIG_SCOPE_LOCAL &&
-		    git_env_bool("GIT_CLONE_PROTECTION_ACTIVE", 0))
-			die(_("active `core.hooksPath` found in the local "
-			      "repository config:\n\t%s\nFor security "
-			      "reasons, this is disallowed by default.\nIf "
-			      "this is intentional and the hook should "
-			      "actually be run, please\nrun the command "
-			      "again with "
-			      "`GIT_CLONE_PROTECTION_ACTIVE=false`"),
-			    value);
+	if (!strcmp(var, "core.hookspath"))
 		return git_config_pathname(&git_hooks_path, var, value);
-	}
 
 	if (!strcmp(var, "core.bare")) {
 		is_bare_repository_cfg = git_config_bool(var, value);

copy.c

@@ -65,61 +65,3 @@ int copy_file_with_time(const char *dst, const char *src, int mode)
 		return copy_times(dst, src);
 	return status;
 }
-
-static int do_symlinks_match(const char *path1, const char *path2)
-{
-	struct strbuf buf1 = STRBUF_INIT, buf2 = STRBUF_INIT;
-	int ret = 0;
-
-	if (!strbuf_readlink(&buf1, path1, 0) &&
-	    !strbuf_readlink(&buf2, path2, 0))
-		ret = !strcmp(buf1.buf, buf2.buf);
-
-	strbuf_release(&buf1);
-	strbuf_release(&buf2);
-	return ret;
-}
-
-int do_files_match(const char *path1, const char *path2)
-{
-	struct stat st1, st2;
-	int fd1 = -1, fd2 = -1, ret = 1;
-	char buf1[8192], buf2[8192];
-
-	if ((fd1 = open_nofollow(path1, O_RDONLY)) < 0 ||
-	    fstat(fd1, &st1) || !S_ISREG(st1.st_mode)) {
-		if (fd1 < 0 && errno == ELOOP)
-			/* maybe this is a symbolic link? */
-			return do_symlinks_match(path1, path2);
-		ret = 0;
-	} else if ((fd2 = open_nofollow(path2, O_RDONLY)) < 0 ||
-		   fstat(fd2, &st2) || !S_ISREG(st2.st_mode)) {
-		ret = 0;
-	}
-
-	if (ret)
-		/* to match, neither must be executable, or both */
-		ret = !(st1.st_mode & 0111) == !(st2.st_mode & 0111);
-
-	if (ret)
-		ret = st1.st_size == st2.st_size;
-
-	while (ret) {
-		ssize_t len1 = read_in_full(fd1, buf1, sizeof(buf1));
-		ssize_t len2 = read_in_full(fd2, buf2, sizeof(buf2));
-
-		if (len1 < 0 || len2 < 0 || len1 != len2)
-			ret = 0; /* read error or different file size */
-		else if (!len1) /* len2 is also 0; hit EOF on both */
-			break; /* ret is still true */
-		else
-			ret = !memcmp(buf1, buf2, len1);
-	}
-
-	if (fd1 >= 0)
-		close(fd1);
-	if (fd2 >= 0)
-		close(fd2);
-
-	return ret;
-}

fsck.c

@@ -636,8 +636,6 @@ static int fsck_tree(const struct object_id *tree_oid,
 				retval += report(options, tree_oid, OBJ_TREE,
 						 FSCK_MSG_MAILMAP_SYMLINK,
 						 ".mailmap is a symlink");
-			oidset_insert(&options->symlink_targets_found,
-				      entry_oid);
 		}
 
 		if ((backslash = strchr(name, '\\'))) {
@@ -1230,56 +1228,6 @@ static int fsck_blob(const struct object_id *oid, const char *buf,
 		}
 	}
 
-	if (oidset_contains(&options->symlink_targets_found, oid)) {
-		const char *ptr = buf;
-		const struct object_id *reported = NULL;
-
-		oidset_insert(&options->symlink_targets_done, oid);
-
-		if (!buf || size > PATH_MAX) {
-			/*
-			 * A missing buffer here is a sign that the caller found the
-			 * blob too gigantic to load into memory. Let's just consider
-			 * that an error.
-			 */
-			return report(options, oid, OBJ_BLOB,
-					FSCK_MSG_SYMLINK_TARGET_LENGTH,
-					"symlink target too long");
-		}
-
-		while (!reported && ptr) {
-			const char *p = ptr;
-			char c, *slash = strchrnul(ptr, '/');
-			char *backslash = memchr(ptr, '\\', slash - ptr);
-
-			c = *slash;
-			*slash = '\0';
-
-			while (!reported && backslash) {
-				*backslash = '\0';
-				if (is_ntfs_dotgit(p))
-					ret |= report(options, reported = oid, OBJ_BLOB,
-						      FSCK_MSG_SYMLINK_POINTS_TO_GIT_DIR,
-						      "symlink target points to git dir");
-				*backslash = '\\';
-				p = backslash + 1;
-				backslash = memchr(p, '\\', slash - p);
-			}
-			if (!reported && is_ntfs_dotgit(p))
-				ret |= report(options, reported = oid, OBJ_BLOB,
-					      FSCK_MSG_SYMLINK_POINTS_TO_GIT_DIR,
-					      "symlink target points to git dir");
-
-			if (!reported && is_hfs_dotgit(ptr))
-				ret |= report(options, reported = oid, OBJ_BLOB,
-					      FSCK_MSG_SYMLINK_POINTS_TO_GIT_DIR,
-					      "symlink target points to git dir");
-
-			*slash = c;
-			ptr = c ? slash + 1 : NULL;
-		}
-	}
-
 	return ret;
 }
 
@@ -1371,10 +1319,6 @@ int fsck_finish(struct fsck_options *options)
 			  FSCK_MSG_GITATTRIBUTES_MISSING, FSCK_MSG_GITATTRIBUTES_BLOB,
 			  options, ".gitattributes");
 
-	ret |= fsck_blobs(&options->symlink_targets_found, &options->symlink_targets_done,
-			  FSCK_MSG_SYMLINK_TARGET_MISSING, FSCK_MSG_SYMLINK_TARGET_BLOB,
-			  options, "<symlink-target>");
-
 	return ret;
 }
 

fsck.h

@@ -63,8 +63,6 @@ enum fsck_msg_type {
 	FUNC(GITATTRIBUTES_LARGE, ERROR) \
 	FUNC(GITATTRIBUTES_LINE_LENGTH, ERROR) \
 	FUNC(GITATTRIBUTES_BLOB, ERROR) \
-	FUNC(SYMLINK_TARGET_MISSING, ERROR) \
-	FUNC(SYMLINK_TARGET_BLOB, ERROR) \
 	/* warnings */ \
 	FUNC(EMPTY_NAME, WARN) \
 	FUNC(FULL_PATHNAME, WARN) \
@@ -74,8 +72,6 @@ enum fsck_msg_type {
 	FUNC(NULL_SHA1, WARN) \
 	FUNC(ZERO_PADDED_FILEMODE, WARN) \
 	FUNC(NUL_IN_COMMIT, WARN) \
-	FUNC(SYMLINK_TARGET_LENGTH, WARN) \
-	FUNC(SYMLINK_POINTS_TO_GIT_DIR, WARN) \
 	/* infos (reported as warnings, but ignored by default) */ \
 	FUNC(BAD_FILEMODE, INFO) \
 	FUNC(GITMODULES_PARSE, INFO) \
@@ -143,8 +139,6 @@ struct fsck_options {
 	struct oidset gitmodules_done;
 	struct oidset gitattributes_found;
 	struct oidset gitattributes_done;
-	struct oidset symlink_targets_found;
-	struct oidset symlink_targets_done;
 	kh_oid_map_t *object_names;
 };
 
@@ -154,8 +148,6 @@ struct fsck_options {
 	.gitmodules_done = OIDSET_INIT, \
 	.gitattributes_found = OIDSET_INIT, \
 	.gitattributes_done = OIDSET_INIT, \
-	.symlink_targets_found = OIDSET_INIT, \
-	.symlink_targets_done = OIDSET_INIT, \
 	.error_func = fsck_error_function \
 }
 #define FSCK_OPTIONS_STRICT { \
@@ -164,8 +156,6 @@ struct fsck_options {
 	.gitmodules_done = OIDSET_INIT, \
 	.gitattributes_found = OIDSET_INIT, \
 	.gitattributes_done = OIDSET_INIT, \
-	.symlink_targets_found = OIDSET_INIT, \
-	.symlink_targets_done = OIDSET_INIT, \
 	.error_func = fsck_error_function, \
 }
 #define FSCK_OPTIONS_MISSING_GITMODULES { \
@@ -174,8 +164,6 @@ struct fsck_options {
 	.gitmodules_done = OIDSET_INIT, \
 	.gitattributes_found = OIDSET_INIT, \
 	.gitattributes_done = OIDSET_INIT, \
-	.symlink_targets_found = OIDSET_INIT, \
-	.symlink_targets_done = OIDSET_INIT, \
 	.error_func = fsck_error_cb_print_missing_gitmodules, \
 }