You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
86 lines
3.5 KiB
86 lines
3.5 KiB
2 years ago
|
From d424adce45d593d41e52294bd8f32fd33c625498 Mon Sep 17 00:00:00 2001
|
||
|
|
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
|
||
|
|
Date: Mon, 7 Mar 2022 18:54:50 +0100
|
||
|
|
Subject: [PATCH] basic: add new variable $SYSTEMD_OS_RELEASE to override
|
||
|
|
location of os-release
|
||
|
|
|
||
|
|
The test for the variable is added in test-systemctl-enable because there we
|
||
|
|
can do it almost for free, and the variable is most likely to be used with
|
||
|
|
'systemctl enable --root' anyway.
|
||
|
|
|
||
|
|
(cherry picked from commit df78419d107662dd49892d76a745c294d7031d66)
|
||
|
|
|
||
|
|
Related: #2082131
|
||
|
|
---
|
||
|
|
docs/ENVIRONMENT.md | 5 +++++
|
||
|
|
src/basic/os-util.c | 16 +++++++++++-----
|
||
|
|
test/test-systemctl-enable.sh | 12 ++++++++++--
|
||
|
|
3 files changed, 26 insertions(+), 7 deletions(-)
|
||
|
|
|
||
|
|
diff --git a/docs/ENVIRONMENT.md b/docs/ENVIRONMENT.md
|
||
|
|
index 71d6c55010..5e9548449c 100644
|
||
|
|
--- a/docs/ENVIRONMENT.md
|
||
|
|
+++ b/docs/ENVIRONMENT.md
|
||
|
|
@@ -43,6 +43,11 @@ All tools:
|
||
|
|
debugging, in order to test generators and other code against specific kernel
|
||
|
|
command lines.
|
||
|
|
|
||
|
|
+* `$SYSTEMD_OS_RELEASE` — if set, use this path instead of `/etc/os-release` or
|
||
|
|
+ `/usr/lib/os-release`. When operating under some root (e.g. `systemctl
|
||
|
|
+ --root=…`), the path is taken relative to the outside root. Only useful for
|
||
|
|
+ debugging.
|
||
|
|
+
|
||
|
|
* `$SYSTEMD_FSTAB` — if set, use this path instead of `/etc/fstab`. Only useful
|
||
|
|
for debugging.
|
||
|
|
|
||
|
|
diff --git a/src/basic/os-util.c b/src/basic/os-util.c
|
||
|
|
index a6e4d09473..38b2179e48 100644
|
||
|
|
--- a/src/basic/os-util.c
|
||
|
|
+++ b/src/basic/os-util.c
|
||
|
|
@@ -170,13 +170,19 @@ int open_extension_release(const char *root, const char *extension, char **ret_p
|
||
|
|
}
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
- FOREACH_STRING(p, "/etc/os-release", "/usr/lib/os-release") {
|
||
|
|
- r = chase_symlinks(p, root, CHASE_PREFIX_ROOT,
|
||
|
|
+ const char *var = secure_getenv("SYSTEMD_OS_RELEASE");
|
||
|
|
+ if (var)
|
||
|
|
+ r = chase_symlinks(var, root, 0,
|
||
|
|
ret_path ? &q : NULL,
|
||
|
|
ret_fd ? &fd : NULL);
|
||
|
|
- if (r != -ENOENT)
|
||
|
|
- break;
|
||
|
|
- }
|
||
|
|
+ else
|
||
|
|
+ FOREACH_STRING(path, "/etc/os-release", "/usr/lib/os-release") {
|
||
|
|
+ r = chase_symlinks(path, root, CHASE_PREFIX_ROOT,
|
||
|
|
+ ret_path ? &q : NULL,
|
||
|
|
+ ret_fd ? &fd : NULL);
|
||
|
|
+ if (r != -ENOENT)
|
||
|
|
+ break;
|
||
|
|
+ }
|
||
|
|
}
|
||
|
|
if (r < 0)
|
||
|
|
return r;
|
||
|
|
diff --git a/test/test-systemctl-enable.sh b/test/test-systemctl-enable.sh
|
||
|
|
index 30ba6532e7..769341129c 100644
|
||
|
|
--- a/test/test-systemctl-enable.sh
|
||
|
|
+++ b/test/test-systemctl-enable.sh
|
||
|
|
@@ -518,6 +518,14 @@ check_alias z 'z' && { echo "Expected failure because %z is not known" >&2; exit
|
||
|
|
|
||
|
|
# FIXME: if there's an invalid Alias=, we shouldn't preach about empty [Install]
|
||
|
|
|
||
|
|
-exit 0 # yes, this is needed because the last test above fails
|
||
|
|
-
|
||
|
|
# TODO: repeat the tests above for presets
|
||
|
|
+
|
||
|
|
+: -------SYSTEMD_OS_RELEASE relative to root------------------
|
||
|
|
+# check that os-release overwriting works as expected with root
|
||
|
|
+test -e "$root/etc/os-release"
|
||
|
|
+
|
||
|
|
+cat >"$root/etc/os-release2" <<EOF
|
||
|
|
+ID='the-id2'
|
||
|
|
+EOF
|
||
|
|
+
|
||
|
|
+SYSTEMD_OS_RELEASE="$root/etc/os-release2" check_alias o 'the-id2'
|