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shared/install: add some more debug messages and comments

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$ systemctl --root=/ preset foobar.service
Cannot find unit foobar.service.
Failed to preset: No such file or directory.
$ systemctl --root=/ preset foobar@.service
Cannot find unit foobar@.service.
Failed to preset: No such file or directory.
$ systemctl --root=/ preset foobar@blah.service
Cannot find unit foobar@blah.service or foobar@.service.
Failed to preset: No such file or directory.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2016-05-04 10:09:52 -04:00
parent 0155928c3c
commit 64f9280ef0
1 changed files with 20 additions and 3 deletions
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23
src/shared/install.c
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@ -116,6 +116,14 @@ bool unit_type_may_template(UnitType type) {
UNIT_PATH);
}
static const char *unit_file_type_table[_UNIT_FILE_TYPE_MAX] = {
[UNIT_FILE_TYPE_REGULAR] = "regular",
[UNIT_FILE_TYPE_SYMLINK] = "symlink",
[UNIT_FILE_TYPE_MASKED] = "masked",
};
DEFINE_PRIVATE_STRING_TABLE_LOOKUP_TO_STRING(unit_file_type, UnitFileType);
static int in_search_path(const LookupPaths *p, const char *path) {
_cleanup_free_ char *parent = NULL;
char **i;
@ -1223,6 +1231,7 @@ static int unit_file_search(
const LookupPaths *paths,
SearchFlags flags) {
_cleanup_free_ char *template = NULL;
char **p;
int r;
@ -1260,8 +1269,6 @@ static int unit_file_search(
* enablement was requested. We will check if it is
* possible to load template unit file. */
_cleanup_free_ char *template = NULL;
r = unit_name_template(info->name, &template);
if (r < 0)
return r;
@ -1283,6 +1290,7 @@ static int unit_file_search(
}
}
log_debug("Cannot find unit %s%s%s.", info->name, template ? " or " : "", strempty(template));
return -ENOENT;
}
@ -1314,6 +1322,11 @@ static int install_info_follow(
return unit_file_load_or_readlink(c, i, i->path, root_dir, flags);
}
/**
* Search for the unit file. If the unit name is a symlink,
* follow the symlink to the target, maybe more than once.
* Propagate the instance name if present.
*/
static int install_info_traverse(
UnitFileScope scope,
InstallContext *c,
@ -1684,8 +1697,12 @@ static int install_context_mark_for_removal(
if (r < 0)
return r;
if (i->type != UNIT_FILE_TYPE_REGULAR)
if (i->type != UNIT_FILE_TYPE_REGULAR) {
log_debug("Unit %s has type %s, ignoring.",
i->name,
unit_file_type_to_string(i->type) ?: "invalid");
continue;
}
r = mark_symlink_for_removal(remove_symlinks_to, i->name);
if (r < 0)