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shared/dropin: fix assert for invalid drop-in

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Don't try to show top level drop-in for non-existent units or when trying to
instantiate non-instantiated units:

$ systemctl cat nonexistent@.service
Assertion 'name' failed at src/shared/dropin.c:143, function unit_file_find_dirs(). Aborting.
$ systemctl cat systemd-journald@.service
Assertion 'name' failed at src/shared/dropin.c:143, function unit_file_find_dirs(). Aborting.
This commit is contained in:
Topi Miettinen 2019-12-17 15:47:37 +02:00 committed by Zbigniew Jędrzejewski-Szmek
parent 51692fab56
commit 7a670b1dd9
2 changed files with 26 additions and 11 deletions
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5
src/shared/dropin.c
View File

@ -230,7 +230,6 @@ int unit_file_find_dropin_paths(
char ***ret) {
_cleanup_strv_free_ char **dirs = NULL;
UnitType type = _UNIT_TYPE_INVALID;
char *name, **p;
Iterator i;
int r;
@ -240,12 +239,13 @@ int unit_file_find_dropin_paths(
/* All the names in the unit are of the same type so just grab one. */
name = (char*) set_first(names);
if (name) {
UnitType type = _UNIT_TYPE_INVALID;
type = unit_name_to_type(name);
if (type < 0)
return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
"Failed to to derive unit type from unit name: %s",
name);
}
/* Special top level drop in for "<unit type>.<suffix>". Add this first as it's the most generic
* and should be able to be overridden by more specific drop-ins. */
@ -256,6 +256,7 @@ int unit_file_find_dropin_paths(
unit_type_to_string(type),
dir_suffix,
&dirs);
}
SET_FOREACH(name, names, i)
STRV_FOREACH(p, lookup_path)

14
test/TEST-15-DROPIN/test-dropin.sh
View File

@ -419,9 +419,23 @@ EOF
clear_services a b
}
test_invalid_dropins () {
echo "Testing invalid dropins..."
# Assertion failed on earlier versions, command exits unsuccessfully on later versions
systemctl cat nonexistent@.service || true
create_services a
systemctl daemon-reload
# Assertion failed on earlier versions, command exits unsuccessfully on later versions
systemctl cat a@.service || true
systemctl stop a
clear_services a
return 0
}
test_basic_dropins
test_template_dropins
test_alias_dropins
test_masked_dropins
test_invalid_dropins
touch /testok