[PATCH v2 12/12] Revert "fsck: warn about symlink pointing inside a gitdir"

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This reverts commit a33fea08 (fsck: warn about symlink pointing
inside a gitdir, 2024-04-10), which warns against symbolic links
commonly created by git-annex.
---
 Documentation/fsck-msgids.txt | 12 --------
 fsck.c                        | 56 -----------------------------------
 fsck.h                        | 12 --------
 t/t1450-fsck.sh               | 37 -----------------------
 4 files changed, 117 deletions(-)

diff --git a/Documentation/fsck-msgids.txt b/Documentation/fsck-msgids.txt
index b06ec385af..12eae8a222 100644
--- a/Documentation/fsck-msgids.txt
+++ b/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.
 
diff --git a/fsck.c b/fsck.c
index b85868e122..47eaeedd70 100644
--- a/fsck.c
+++ b/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;
 }
 
diff --git a/fsck.h b/fsck.h
index 130fa8d8f9..fcecf4101c 100644
--- a/fsck.h
+++ b/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, \
 }
 
diff --git a/t/t1450-fsck.sh b/t/t1450-fsck.sh
index 5669872bc8..de0f6d5e7f 100755
--- a/t/t1450-fsck.sh
+++ b/t/t1450-fsck.sh
@@ -1023,41 +1023,4 @@ test_expect_success 'fsck error on gitattributes with excessive size' '
 	test_cmp expected actual
 '
 
-test_expect_success 'fsck warning on symlink target with excessive length' '
-	symlink_target=$(printf "pattern %032769d" 1 | git hash-object -w --stdin) &&
-	test_when_finished "remove_object $symlink_target" &&
-	tree=$(printf "120000 blob %s\t%s\n" $symlink_target symlink | git mktree) &&
-	test_when_finished "remove_object $tree" &&
-	cat >expected <<-EOF &&
-	warning in blob $symlink_target: symlinkTargetLength: symlink target too long
-	EOF
-	git fsck --no-dangling >actual 2>&1 &&
-	test_cmp expected actual
-'
-
-test_expect_success 'fsck warning on symlink target pointing inside git dir' '
-	gitdir=$(printf ".git" | git hash-object -w --stdin) &&
-	ntfs_gitdir=$(printf "GIT~1" | git hash-object -w --stdin) &&
-	hfs_gitdir=$(printf ".${u200c}git" | git hash-object -w --stdin) &&
-	inside_gitdir=$(printf "nested/.git/config" | git hash-object -w --stdin) &&
-	benign_target=$(printf "legit/config" | git hash-object -w --stdin) &&
-	tree=$(printf "120000 blob %s\t%s\n" \
-		$benign_target benign_target \
-		$gitdir gitdir \
-		$hfs_gitdir hfs_gitdir \
-		$inside_gitdir inside_gitdir \
-		$ntfs_gitdir ntfs_gitdir |
-		git mktree) &&
-	for o in $gitdir $ntfs_gitdir $hfs_gitdir $inside_gitdir $benign_target $tree
-	do
-		test_when_finished "remove_object $o" || return 1
-	done &&
-	printf "warning in blob %s: symlinkPointsToGitDir: symlink target points to git dir\n" \
-		$gitdir $hfs_gitdir $inside_gitdir $ntfs_gitdir |
-	sort >expected &&
-	git fsck --no-dangling >actual 2>&1 &&
-	sort actual >actual.sorted &&
-	test_cmp expected actual.sorted
-'
-
 test_done
-- 
2.45.1-246-gb9cfe4845c





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