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install: never hit assert() when we can't figure out where to write configuration symlinks

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Under specific circumstances it might happen that we can't figure out
where to place our symlinks, for example because we are supposed to
create them in the runtime directory but $XDG_RUNTIME_DIR is not set. In
this case, return -ENXIO instead of hitting an assert().

(Yeah, the error isn't very descriptive, but for now this should at
least be good enough to remove the assert() being hit.)
This commit is contained in:
Lennart Poettering 2017-02-10 15:14:18 +01:00
parent 637d6e5b9c
commit d0fd66a379
1 changed files with 17 additions and 0 deletions
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17
src/shared/install.c
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@ -1893,6 +1893,8 @@ int unit_file_mask(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
STRV_FOREACH(i, files) {
_cleanup_free_ char *path = NULL;
@ -1941,6 +1943,9 @@ int unit_file_unmask(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
dry_run = !!(flags & UNIT_FILE_DRY_RUN);
STRV_FOREACH(i, files) {
@ -2030,6 +2035,8 @@ int unit_file_link(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
STRV_FOREACH(i, files) {
_cleanup_free_ char *full = NULL;
@ -2297,6 +2304,8 @@ int unit_file_add_dependency(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
r = install_info_discover(scope, &c, &paths, target, SEARCH_FOLLOW_CONFIG_SYMLINKS,
&target_info, changes, n_changes);
@ -2362,6 +2371,8 @@ int unit_file_enable(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
STRV_FOREACH(f, files) {
r = install_info_discover(scope, &c, &paths, *f, SEARCH_LOAD|SEARCH_FOLLOW_CONFIG_SYMLINKS,
@ -2406,6 +2417,8 @@ int unit_file_disable(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
STRV_FOREACH(i, files) {
if (!unit_name_is_valid(*i, UNIT_NAME_ANY))
@ -2900,6 +2913,8 @@ int unit_file_preset(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
r = read_presets(scope, root_dir, &presets);
if (r < 0)
@ -2938,6 +2953,8 @@ int unit_file_preset_all(
return r;
config_path = (flags & UNIT_FILE_RUNTIME) ? paths.runtime_config : paths.persistent_config;
if (!config_path)
return -ENXIO;
r = read_presets(scope, root_dir, &presets);
if (r < 0)