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authorZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2022-03-17 16:02:10 +0100
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2022-03-29 16:17:57 +0200
commit48eadb9d9b66f302cda09cdf6d35fead31aaa968 (patch)
tree93ac5892d2186a08d2936dd386b5ca6dd87ae614
parentshared/install: split UNIT_FILE_SYMLINK into two states (diff)
downloadsystemd-48eadb9d9b66f302cda09cdf6d35fead31aaa968.tar.xz
systemd-48eadb9d9b66f302cda09cdf6d35fead31aaa968.zip
shared/install: fix handling of a linked unit file
When we have a symlink that goes outside of our search path, we should just ignore the target file name. But we were verifying it, and rejecting in the case where a symlink was created manually.
-rw-r--r--src/shared/install.c4
-rw-r--r--test/test-systemctl-enable.sh12
2 files changed, 11 insertions, 5 deletions
diff --git a/src/shared/install.c b/src/shared/install.c
index 6aacdcf967..20707edf58 100644
--- a/src/shared/install.c
+++ b/src/shared/install.c
@@ -1606,7 +1606,9 @@ static int install_info_traverse(
return -ELOOP;
}
- r = install_info_follow(ctx, i, lp, flags, false);
+ r = install_info_follow(ctx, i, lp, flags,
+ /* If linked, don't look at the target name */
+ /* ignore_different_name= */ i->type == UNIT_FILE_TYPE_LINKED);
if (r == -EXDEV) {
_cleanup_free_ char *buffer = NULL;
const char *bn;
diff --git a/test/test-systemctl-enable.sh b/test/test-systemctl-enable.sh
index 9463433c5b..45f3513de3 100644
--- a/test/test-systemctl-enable.sh
+++ b/test/test-systemctl-enable.sh
@@ -216,12 +216,16 @@ cat >"$root/link3.suffix" <<EOF
WantedBy=services.target
EOF
+# We wouldn't create such a link ourselves, but it should accept it when present.
ln -s "/link3.suffix" "$root/etc/systemd/system/link3.service"
-# SYSTEMD_LOG_LEVEL=debug SYSTEMD_LOG_LOCATION=1 "$systemctl" --root="$root" enable 'link3.service'
-# islink "$root/etc/systemd/system/link3.service" "/link3.suffix"
-# islink "$root/etc/systemd/system/services.target.wants/link3.service" "../link3.service"
-# unit_file_load_or_readlink() needs to be fixed to not follow links
+SYSTEMD_LOG_LEVEL=debug SYSTEMD_LOG_LOCATION=1 "$systemctl" --root="$root" enable 'link3.service'
+islink "$root/etc/systemd/system/link3.service" "/link3.suffix"
+islink "$root/etc/systemd/system/services.target.wants/link3.service" "../link3.service"
+
+SYSTEMD_LOG_LEVEL=debug SYSTEMD_LOG_LOCATION=1 "$systemctl" --root="$root" disable 'link3.service'
+test ! -h "$root/etc/systemd/system/link3.service"
+test ! -h "$root/etc/systemd/system/services.target.wants/link3.service"
: -------enable on masked-------------------------------------
ln -s "/dev/null" "$root/etc/systemd/system/masked.service"