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authorAnna (navi) Figueiredo Gomes <navi@vlhl.dev>2024-07-18 17:29:21 +0200
committerAnna (navi) Figueiredo Gomes <navi@vlhl.dev>2024-07-20 03:15:17 +0200
commitc3ccaeeddc4d92bfe34cedaa6b71cb6e830fe280 (patch)
tree926df7c4c604381f4d7b7b9ebccfa13bacefa3d7
parent18be0d77dc00d2e9faa7d8718e80a2f137ec0bf7 (diff)
librc, openrc-pam: instantiate user.<username> service automatically
it's created in /run/openrc/dynamic and linked to the service in /etc at login. Signed-off-by: Anna (navi) Figueiredo Gomes <navi@vlhl.dev>
-rw-r--r--src/librc/librc-depend.c1
-rw-r--r--src/librc/librc.c29
-rw-r--r--src/librc/rc.h.in10
-rw-r--r--src/openrc-pam/openrc-pam.c14
-rw-r--r--src/shared/helpers.h16
5 files changed, 68 insertions, 2 deletions
diff --git a/src/librc/librc-depend.c b/src/librc/librc-depend.c
index a03e1a61..9f592cfe 100644
--- a/src/librc/librc-depend.c
+++ b/src/librc/librc-depend.c
@@ -700,6 +700,7 @@ static const char *const depdirs[] =
"options",
"exclusive",
"scheduled",
+ "dynamic",
"tmp",
NULL
};
diff --git a/src/librc/librc.c b/src/librc/librc.c
index d218c8be..ee728b30 100644
--- a/src/librc/librc.c
+++ b/src/librc/librc.c
@@ -1317,6 +1317,35 @@ rc_service_delete(const char *runlevel, const char *service)
return (r == 0);
}
+char *
+rc_service_base(const char *service)
+{
+ char *dot = strchr(service, '.');
+ if (!dot)
+ return NULL;
+ return xstrndup(service, dot - service);
+}
+
+char *
+rc_service_dylink(const char *service, const char *target)
+{
+ char *file = rc_service_resolve(service);
+ char *target_file = NULL;
+ if (!exists(file))
+ goto out;
+
+ xasprintf(&target_file, "%s/dynamic/%s", rc_service_dir(), target);
+ if (!exists(target_file) && symlink(file, target_file) == -1) {
+ free(target_file);
+ target_file = NULL;
+ goto out;
+ }
+
+out:
+ free(file);
+ return target_file;
+}
+
RC_STRINGLIST *
rc_services_scheduled_by(const char *service)
{
diff --git a/src/librc/rc.h.in b/src/librc/rc.h.in
index 59fdfda3..794b4353 100644
--- a/src/librc/rc.h.in
+++ b/src/librc/rc.h.in
@@ -275,6 +275,16 @@ RC_STRINGLIST *rc_service_extra_commands(const char *);
* @return pointer to full path of service */
char *rc_service_resolve(const char *);
+/*! Gets the base service for a multiplexed service
+ * @param multiplexed service to check
+ * @return pointer to base service name or NULL if not multiplexed */
+char *rc_service_base(const char *);
+
+/*! Dynamically multiplexes a service into the runtime directory.
+ * @param service to link
+ * @param target service name */
+char *rc_service_dylink(const char *, const char *);
+
/*! Schedule a service to be started when another service starts
* @param service that starts the scheduled service when started
* @param service_to_start service that will be started */
diff --git a/src/openrc-pam/openrc-pam.c b/src/openrc-pam/openrc-pam.c
index 241b123d..f0556ada 100644
--- a/src/openrc-pam/openrc-pam.c
+++ b/src/openrc-pam/openrc-pam.c
@@ -18,6 +18,7 @@ exec_openrc(pam_handle_t *pamh, bool opening)
char *svc_name = NULL;
char *pam_lock = NULL;
char *logins, *rundir;
+ char *file;
const char *username;
struct passwd *pw;
int count = 0, fd = -1;
@@ -48,17 +49,26 @@ exec_openrc(pam_handle_t *pamh, bool opening)
goto out;
}
+ file = rc_service_resolve(svc_name);
+ if (!file) {
+ file = rc_service_dylink("user", svc_name);
+ if (!file) {
+ svc_unlock(pam_lock, fd);
+ goto out;
+ }
+ }
+
logins = rc_service_value_get(svc_name, "logins");
if (logins)
sscanf(logins, "%d", &count);
free(logins);
if (opening && count == 0) {
- pid = service_start(svc_name);
+ pid = service_start(file);
rc_service_mark(svc_name, RC_SERVICE_HOTPLUGGED);
count++;
} else if (count > 0) {
- pid = service_stop(svc_name);
+ pid = service_stop(file);
count--;
}
diff --git a/src/shared/helpers.h b/src/shared/helpers.h
index dee41b75..36a25a2d 100644
--- a/src/shared/helpers.h
+++ b/src/shared/helpers.h
@@ -91,6 +91,22 @@ RC_UNUSED static char *xstrdup(const char *str)
/* NOTREACHED */
}
+RC_UNUSED static char *xstrndup(const char *str, size_t n)
+{
+ char *value;
+
+ if (!str)
+ return (NULL);
+
+ value = strndup(str, n);
+
+ if (value)
+ return (value);
+
+ ERRX;
+ /* NOTREACHED */
+}
+
#undef ERRX
/*