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From: "Elijah Newren via GitGitGadget" <gitgitgadget@gmail.com>
To: git@vger.kernel.org
Cc: Eric Sunshine <sunshine@sunshineco.com>,
	Elijah Newren <newren@gmail.com>,
	Derrick Stolee <stolee@gmail.com>, Jeff King <peff@peff.net>,
	Elijah Newren <newren@gmail.com>,
	Elijah Newren <newren@gmail.com>
Subject: [PATCH v2 1/8] t7300: add testcase showing unnecessary traversal into ignored directory
Date: Sat, 08 May 2021 00:08:13 +0000	[thread overview]
Message-ID: <a3bd253fa8e8ae47d19beb35327d8283ffa49289.1620432500.git.gitgitgadget@gmail.com> (raw)
In-Reply-To: <pull.1020.v2.git.git.1620432500.gitgitgadget@gmail.com>

From: Elijah Newren <newren@gmail.com>

PNPM is apparently creating deeply nested (but ignored) directory
structures; traversing them is costly performance-wise, unnecessary, and
in some cases is even throwing warnings/errors because the paths are too
long to handle on various platforms.  Add a testcase that demonstrates
this problem.

Initial-test-by: Jason Gore <Jason.Gore@microsoft.com>
Helped-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Elijah Newren <newren@gmail.com>
---
 t/t7300-clean.sh | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/t/t7300-clean.sh b/t/t7300-clean.sh
index a74816ca8b46..5f1dc397c11e 100755
--- a/t/t7300-clean.sh
+++ b/t/t7300-clean.sh
@@ -746,4 +746,44 @@ test_expect_success 'clean untracked paths by pathspec' '
 	test_must_be_empty actual
 '
 
+test_expect_failure 'avoid traversing into ignored directories' '
+	test_when_finished rm -f output error &&
+	test_create_repo avoid-traversing-deep-hierarchy &&
+	(
+		cd avoid-traversing-deep-hierarchy &&
+
+		>directory-random-file.txt &&
+		# Put this file under directory400/directory399/.../directory1/
+		depth=400 &&
+		for x in $(test_seq 1 $depth); do
+			mkdir "tmpdirectory$x" &&
+			mv directory* "tmpdirectory$x" &&
+			mv "tmpdirectory$x" "directory$x"
+		done &&
+
+		git clean -ffdxn -e directory$depth >../output 2>../error &&
+
+		test_must_be_empty ../output &&
+		# We especially do not want things like
+		#   "warning: could not open directory "
+		# appearing in the error output.  It is true that directories
+		# that are too long cannot be opened, but we should not be
+		# recursing into those directories anyway since the very first
+		# level is ignored.
+		test_must_be_empty ../error &&
+
+		# alpine-linux-musl fails to "rm -rf" a directory with such
+		# a deeply nested hierarchy.  Help it out by deleting the
+		# leading directories ourselves.  Super slow, but, what else
+		# can we do?  Without this, we will hit a
+		#     error: Tests passed but test cleanup failed; aborting
+		# so do this ugly manual cleanup...
+		while test ! -f directory-random-file.txt; do
+			name=$(ls -d directory*) &&
+			mv $name/* . &&
+			rmdir $name
+		done
+	)
+'
+
 test_done
-- 
gitgitgadget


  reply	other threads:[~2021-05-08  0:08 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-07  4:04 [PATCH 0/5] Directory traversal fixes Elijah Newren via GitGitGadget
2021-05-07  4:04 ` [PATCH 1/5] t7300: add testcase showing unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-07  4:27   ` Eric Sunshine
2021-05-07  5:00     ` Elijah Newren
2021-05-07  5:31       ` Eric Sunshine
2021-05-07  5:42         ` Elijah Newren
2021-05-07  5:56           ` Eric Sunshine
2021-05-07 23:05       ` Jeff King
2021-05-07 23:15         ` Eric Sunshine
2021-05-08  0:04         ` Elijah Newren
2021-05-08  0:10           ` Eric Sunshine
2021-05-08 17:20             ` Elijah Newren
2021-05-08 11:13   ` Philip Oakley
2021-05-08 17:20     ` Elijah Newren
2021-05-07  4:04 ` [PATCH 2/5] t3001, t7300: add testcase showcasing missed directory traversal Elijah Newren via GitGitGadget
2021-05-07  4:04 ` [PATCH 3/5] dir: avoid unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-07  4:04 ` [PATCH 4/5] dir: traverse into untracked directories if they may have ignored subfiles Elijah Newren via GitGitGadget
2021-05-07  4:05 ` [PATCH 5/5] [RFC] ls-files: error out on -i unless -o or -c are specified Elijah Newren via GitGitGadget
2021-05-07 16:22 ` [PATCH 6/5] dir: update stale description of treat_directory() Derrick Stolee
2021-05-07 17:57   ` Elijah Newren
2021-05-07 16:27 ` [PATCH 0/5] Directory traversal fixes Derrick Stolee
2021-05-08  0:08 ` [PATCH v2 0/8] " Elijah Newren via GitGitGadget
2021-05-08  0:08   ` Elijah Newren via GitGitGadget [this message]
2021-05-08 10:13     ` [PATCH v2 1/8] t7300: add testcase showing unnecessary traversal into ignored directory Junio C Hamano
2021-05-08 17:34       ` Elijah Newren
2021-05-08 10:19     ` Junio C Hamano
2021-05-08 17:41       ` Elijah Newren
2021-05-08  0:08   ` [PATCH v2 2/8] t3001, t7300: add testcase showcasing missed directory traversal Elijah Newren via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 3/8] dir: avoid unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 4/8] dir: traverse into untracked directories if they may have ignored subfiles Elijah Newren via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 5/8] [RFC] ls-files: error out on -i unless -o or -c are specified Elijah Newren via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 6/8] dir: update stale description of treat_directory() Derrick Stolee via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 7/8] [RFC] dir: convert trace calls to trace2 equivalents Elijah Newren via GitGitGadget
2021-05-08  0:08   ` [PATCH v2 8/8] [RFC] dir: reported number of visited directories and paths with trace2 Elijah Newren via GitGitGadget
2021-05-08 19:58   ` [PATCH v3 0/8] Directory traversal fixes Elijah Newren via GitGitGadget
2021-05-08 19:58     ` [PATCH v3 1/8] [RFC] dir: convert trace calls to trace2 equivalents Elijah Newren via GitGitGadget
2021-05-10  4:49       ` Junio C Hamano
2021-05-11 17:23         ` Elijah Newren
2021-05-11 16:17       ` Jeff Hostetler
2021-05-11 17:29         ` Elijah Newren
2021-05-08 19:58     ` [PATCH v3 2/8] [RFC] dir: report number of visited directories and paths with trace2 Elijah Newren via GitGitGadget
2021-05-10  5:00       ` Junio C Hamano
2021-05-08 19:58     ` [PATCH v3 3/8] [RFC] ls-files: error out on -i unless -o or -c are specified Elijah Newren via GitGitGadget
2021-05-10  5:09       ` Junio C Hamano
2021-05-11 17:40         ` Elijah Newren
2021-05-11 22:32           ` Junio C Hamano
2021-05-08 19:59     ` [PATCH v3 4/8] t7300: add testcase showing unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-10  5:28       ` Junio C Hamano
2021-05-11 17:45         ` Elijah Newren
2021-05-11 22:43           ` Junio C Hamano
2021-05-12  2:07             ` Elijah Newren
2021-05-12  3:17               ` Junio C Hamano
2021-05-08 19:59     ` [PATCH v3 5/8] t3001, t7300: add testcase showcasing missed directory traversal Elijah Newren via GitGitGadget
2021-05-08 19:59     ` [PATCH v3 6/8] dir: avoid unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-10  5:48       ` Junio C Hamano
2021-05-11 17:57         ` Elijah Newren
2021-05-08 19:59     ` [PATCH v3 7/8] dir: traverse into untracked directories if they may have ignored subfiles Elijah Newren via GitGitGadget
2021-05-08 19:59     ` [PATCH v3 8/8] dir: update stale description of treat_directory() Derrick Stolee via GitGitGadget
2021-05-11 18:34     ` [PATCH v4 0/8] Directory traversal fixes Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 1/8] dir: convert trace calls to trace2 equivalents Elijah Newren via GitGitGadget
2021-05-11 19:06         ` Jeff Hostetler
2021-05-11 20:12           ` Elijah Newren
2021-05-11 23:12             ` Jeff Hostetler
2021-05-12  0:44               ` Elijah Newren
2021-05-12 12:26                 ` Jeff Hostetler
2021-05-12 15:24                   ` Elijah Newren
2021-05-11 18:34       ` [PATCH v4 2/8] dir: report number of visited directories and paths with trace2 Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 3/8] ls-files: error out on -i unless -o or -c are specified Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 4/8] t7300: add testcase showing unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 5/8] t3001, t7300: add testcase showcasing missed directory traversal Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 6/8] dir: avoid unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 7/8] dir: traverse into untracked directories if they may have ignored subfiles Elijah Newren via GitGitGadget
2021-05-11 18:34       ` [PATCH v4 8/8] dir: update stale description of treat_directory() Derrick Stolee via GitGitGadget
2021-05-12 17:28       ` [PATCH v5 0/9] Directory traversal fixes Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 1/9] dir: convert trace calls to trace2 equivalents Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 2/9] dir: report number of visited directories and paths with trace2 Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 3/9] ls-files: error out on -i unless -o or -c are specified Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 4/9] t7300: add testcase showing unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 5/9] t3001, t7300: add testcase showcasing missed directory traversal Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 6/9] dir: avoid unnecessary traversal into ignored directory Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 7/9] dir: traverse into untracked directories if they may have ignored subfiles Elijah Newren via GitGitGadget
2021-05-12 17:28         ` [PATCH v5 8/9] dir: update stale description of treat_directory() Derrick Stolee via GitGitGadget
2021-05-17 17:20           ` Derrick Stolee
2021-05-17 19:44             ` Junio C Hamano
2021-05-18  3:32               ` Elijah Newren
2021-05-19  1:44                 ` Junio C Hamano
2021-05-12 17:28         ` [PATCH v5 9/9] dir: introduce readdir_skip_dot_and_dotdot() helper Elijah Newren via GitGitGadget
2021-05-17 17:22           ` Derrick Stolee
2021-05-18  3:34             ` Elijah Newren
2021-05-17 17:23         ` [PATCH v5 0/9] Directory traversal fixes Derrick Stolee

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