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load-dropin: add support for .requires directories

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This commit is contained in:
Lennart Poettering 2010-11-15 04:24:04 +01:00
parent 49d50c55bb
commit 99f08d14a7
1 changed files with 58 additions and 39 deletions
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97
src/load-dropin.c
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@ -28,11 +28,14 @@
#include "strv.h"
#include "unit-name.h"
static int iterate_dir(Unit *u, const char *path) {
static int iterate_dir(Unit *u, const char *path, UnitDependency dependency) {
DIR *d;
struct dirent *de;
int r;
assert(u);
assert(path);
if (!(d = opendir(path))) {
if (errno == ENOENT)
@ -52,7 +55,7 @@ static int iterate_dir(Unit *u, const char *path) {
goto finish;
}
r = unit_add_dependency_by_name(u, UNIT_WANTS, de->d_name, f, true);
r = unit_add_dependency_by_name(u, dependency, de->d_name, f, true);
free(f);
if (r < 0)
@ -66,9 +69,57 @@ finish:
return r;
}
static int process_dir(Unit *u, const char *unit_path, const char *name, const char *suffix, UnitDependency dependency) {
int r;
char *path;
assert(u);
assert(unit_path);
assert(name);
assert(suffix);
if (asprintf(&path, "%s/%s%s", unit_path, name, suffix) < 0)
return -ENOMEM;
if (u->meta.manager->unit_path_cache &&
!set_get(u->meta.manager->unit_path_cache, path))
r = 0;
else
r = iterate_dir(u, path, dependency);
free(path);
if (r < 0)
return r;
if (u->meta.instance) {
char *template;
/* Also try the template dir */
if (!(template = unit_name_template(name)))
return -ENOMEM;
r = asprintf(&path, "%s/%s%s", unit_path, template, suffix);
free(template);
if (r < 0)
return -ENOMEM;
if (u->meta.manager->unit_path_cache &&
!set_get(u->meta.manager->unit_path_cache, path))
r = 0;
else
r = iterate_dir(u, path, dependency);
free(path);
if (r < 0)
return r;
}
return 0;
}
int unit_load_dropin(Unit *u) {
Iterator i;
int r;
char *t;
assert(u);
@ -76,48 +127,16 @@ int unit_load_dropin(Unit *u) {
/* Load dependencies from supplementary drop-in directories */
SET_FOREACH(t, u->meta.names, i) {
char *path;
char **p;
STRV_FOREACH(p, u->meta.manager->lookup_paths.unit_path) {
int r;
if (asprintf(&path, "%s/%s.wants", *p, t) < 0)
return -ENOMEM;
if (u->meta.manager->unit_path_cache &&
!set_get(u->meta.manager->unit_path_cache, path))
r = 0;
else
r = iterate_dir(u, path);
free(path);
if (r < 0)
if ((r = process_dir(u, *p, t, ".wants", UNIT_WANTS)) < 0)
return r;
if (u->meta.instance) {
char *template;
/* Also try the template dir */
if (!(template = unit_name_template(t)))
return -ENOMEM;
r = asprintf(&path, "%s/%s.wants", *p, template);
free(template);
if (r < 0)
return -ENOMEM;
if (u->meta.manager->unit_path_cache &&
!set_get(u->meta.manager->unit_path_cache, path))
r = 0;
else
r = iterate_dir(u, path);
free(path);
if (r < 0)
return r;
}
if ((r = process_dir(u, *p, t, ".requires", UNIT_REQUIRES)) < 0)
return r;
}
}