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systemd/SOURCES/1017-test-skip-the-symlink-...

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From a4e0b7ab90c8bc6ecb7bd883f19e5a5834ae9058 Mon Sep 17 00:00:00 2001
From: Frantisek Sumsal <fsumsal@redhat.com>
Date: Wed, 13 Mar 2024 12:41:17 +0100
Subject: [PATCH] test: skip the symlink part of test_touch_file() in GH
Actions
Our (RHEL 8) touch_file() is not clever enough and does chmod() on a
symlink, which fails with EOPNOTSUPP on newer kernels. This is not an
issue on the RHEL 8 kernel, where doing chmod() on a symlink works
(albeit only on tmpfs) but in GH Actions we run in a container, and with
the underlying kernel doing chmod() on a symlink fails even on tmpfs:
RHEL 8:
~# mount -t tmpfs tmpfs /tmp
~# (cd /tmp; ln -s symlink dangling; ln -s /etc/os-release symlink)
~# (cd /var/tmp; ln -s symlink dangling; ln -s /etc/os-release symlink)
~# gcc -o main main.c -D_GNU_SOURCE
~# ./main /tmp/dangling
chmod(/proc/self/fd/3)=0 (0)
~# ./main /tmp/symlink
chmod(/proc/self/fd/3)=0 (0)
~# ./main /var/tmp/dangling
chmod(/proc/self/fd/3)=-1 (95)
~# ./main /var/tmp/symlink
chmod(/proc/self/fd/3)=-1 (95)
Newer kernel:
~# uname -r
6.7.4-200.fc39.x86_64
~# ./main /tmp/dangling
chmod(/proc/self/fd/3)=-1 (95)
~# ./main /tmp/symlink
chmod(/proc/self/fd/3)=-1 (95)
~# ./main /var/tmp/dangling
chmod(/proc/self/fd/3)=-1 (95)
~# ./main /var/tmp/symlink
chmod(/proc/self/fd/3)=-1 (95)
Backporting the necessary patches would be way too risky so late in the
RHEL 8 cycle, so let's just skip the offending test when running in GH
Actions. To do that we have to jump through a couple of hoops, since
RHEL 8 systemd can't detect docker. Oh well.
See: #434
RHEL-only
---
src/test/test-fs-util.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/src/test/test-fs-util.c b/src/test/test-fs-util.c
index aa32629f62..a3428f8c0d 100644
--- a/src/test/test-fs-util.c
+++ b/src/test/test-fs-util.c
@@ -15,6 +15,7 @@
#include "stdio-util.h"
#include "string-util.h"
#include "strv.h"
+#include "tests.h"
#include "user-util.h"
#include "util.h"
#include "virt.h"
@@ -544,15 +545,17 @@ static void test_touch_file(void) {
assert_se(timespec_load(&st.st_mtim) == test_mtime);
}
- a = strjoina(p, "/lnk");
- assert_se(symlink("target", a) >= 0);
- assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
- assert_se(lstat(a, &st) >= 0);
- assert_se(st.st_uid == test_uid);
- assert_se(st.st_gid == test_gid);
- assert_se(S_ISLNK(st.st_mode));
- assert_se((st.st_mode & 0777) == 0640);
- assert_se(timespec_load(&st.st_mtim) == test_mtime);
+ if (!streq_ptr(ci_environment(), "github-actions")) {
+ a = strjoina(p, "/lnk");
+ assert_se(symlink("target", a) >= 0);
+ assert_se(touch_file(a, false, test_mtime, test_uid, test_gid, 0640) >= 0);
+ assert_se(lstat(a, &st) >= 0);
+ assert_se(st.st_uid == test_uid);
+ assert_se(st.st_gid == test_gid);
+ assert_se(S_ISLNK(st.st_mode));
+ assert_se((st.st_mode & 0777) == 0640);
+ assert_se(timespec_load(&st.st_mtim) == test_mtime);
+ }
}
static void test_unlinkat_deallocate(void) {