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authorLuca Boccassi <bluca@debian.org>2024-07-03 22:27:28 +0200
committerLuca Boccassi <luca.boccassi@gmail.com>2024-07-04 12:49:28 +0200
commit92d1fe3efac7b3a700317ec71b64cab5ebc17b42 (patch)
tree7b5edab4eab3d9fd47c583f7509ce7861a3c09f2
parentmkosi: Build a disk image by default again (diff)
downloadsystemd-92d1fe3efac7b3a700317ec71b64cab5ebc17b42.tar.xz
systemd-92d1fe3efac7b3a700317ec71b64cab5ebc17b42.zip
os-util: avoid matching on the wrong extension-release file
The previous commit tries to extract a substring from the extension-release suffix, but that is not right, it's only the images that need to be versioned and extracted, use the extension-release suffix as-is. Otherwise if it happens to contain a prefix that matches the wrong image, it will be taken into account. Follow-up for 37543971aff79f3a37646ffc2bb5845c9394797b
-rw-r--r--src/basic/os-util.c10
-rwxr-xr-xtest/units/TEST-29-PORTABLE.sh11
2 files changed, 13 insertions, 8 deletions
diff --git a/src/basic/os-util.c b/src/basic/os-util.c
index 0da4e9d079..9b31a0d325 100644
--- a/src/basic/os-util.c
+++ b/src/basic/os-util.c
@@ -259,13 +259,7 @@ int open_extension_release_at(
}
if (!relax_extension_release_check) {
- _cleanup_free_ char *base_image_name = NULL, *base_extension = NULL;
-
- r = path_extract_image_name(image_name, &base_image_name);
- if (r < 0) {
- log_debug_errno(r, "Failed to extract image name from %s/%s, ignoring: %m", dir_path, de->d_name);
- continue;
- }
+ _cleanup_free_ char *base_extension = NULL;
r = path_extract_image_name(extension, &base_extension);
if (r < 0) {
@@ -273,7 +267,7 @@ int open_extension_release_at(
continue;
}
- if (!streq(base_image_name, base_extension) &&
+ if (!streq(image_name, base_extension) &&
extension_release_strict_xattr_value(fd, dir_path, image_name) != 0)
continue;
}
diff --git a/test/units/TEST-29-PORTABLE.sh b/test/units/TEST-29-PORTABLE.sh
index 27c24a0e6c..b4dcd5a1a2 100755
--- a/test/units/TEST-29-PORTABLE.sh
+++ b/test/units/TEST-29-PORTABLE.sh
@@ -354,6 +354,17 @@ portablectl detach --now --runtime --enable /tmp/rootdir minimal-app0
portablectl "${ARGS[@]}" attach --copy=symlink --now --runtime /tmp/rootdir minimal-app0
portablectl detach --now --runtime --enable /tmp/rootdir minimal-app0
+# The wrong file should be ignored, given the right one has the xattr set
+mkdir -p /tmp/wrongext/usr/lib/extension-release.d /tmp/wrongext/usr/lib/systemd/system/
+echo "[Service]" > /tmp/wrongext/usr/lib/systemd/system/app0.service
+touch /tmp/wrongext/usr/lib/extension-release.d/extension-release.wrongext_somethingwrong.txt
+cp /tmp/rootdir/usr/lib/os-release /tmp/wrongext/usr/lib/extension-release.d/extension-release.app0
+setfattr -n user.extension-release.strict -v "false" /tmp/wrongext/usr/lib/extension-release.d/extension-release.app0
+portablectl "${ARGS[@]}" attach --runtime --extension /tmp/wrongext /tmp/rootdir app0
+status="$(portablectl is-attached --extension wrongext rootdir)"
+[[ "${status}" == "attached-runtime" ]]
+portablectl detach --runtime --extension /tmp/wrongext /tmp/rootdir app0
+
umount /tmp/rootdir
umount /tmp/app0
umount /tmp/app1