sd-login: update machine enumeration/notifications APIs for new /run/systemd/machines/

[elogind.git] / src / login / sd-login.c

diff --git a/src/login/sd-login.c b/src/login/sd-login.c
index 30e07a93223b69c415375cebc6b7deb2a2d03ed6..875d134efcc0aa70befd417ed7476f1ab6c6c6e6 100644 (file)
--- a/src/login/sd-login.c
+++ b/src/login/sd-login.c
@@ -73,10 +73,6 @@ _public_ int sd_pid_get_machine_name(pid_t pid, char **name) {
 }
 
 _public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
-        int r;
-        _cleanup_free_ char *root = NULL, *cgroup = NULL, *cc = NULL;
-        char *p;
-        struct stat st;
 
         if (pid < 0)
                 return -EINVAL;
@@ -84,36 +80,7 @@ _public_ int sd_pid_get_owner_uid(pid_t pid, uid_t *uid) {
         if (!uid)
                 return -EINVAL;
 
-        r = cg_pid_get_path_shifted(pid, &root, &cgroup);
-        if (r < 0)
-                return r;
-
-        if (!startswith(cgroup, "/user/"))
-                return -ENOENT;
-
-        p = strchr(cgroup + 6, '/');
-        if (!p)
-                return -ENOENT;
-
-        p++;
-        p += strcspn(p, "/");
-        *p = 0;
-
-        r = cg_get_path(SYSTEMD_CGROUP_CONTROLLER, root, cgroup, &cc);
-
-        if (r < 0)
-                return -ENOMEM;
-
-        r = lstat(cc, &st);
-
-        if (r < 0)
-                return -errno;
-
-        if (!S_ISDIR(st.st_mode))
-                return -ENOTDIR;
-
-        *uid = st.st_uid;
-        return 0;
+        return cg_pid_get_owner_uid(pid, uid);
 }
 
 _public_ int sd_uid_get_state(uid_t uid, char**state) {
@@ -624,6 +591,10 @@ _public_ int sd_get_uids(uid_t **users) {
         return r;
 }
 
+_public_ int sd_get_machine_names(char ***machines) {
+        return get_files_in_directory("/run/systemd/machines/", machines);
+}
+
 static inline int MONITOR_TO_FD(sd_login_monitor *m) {
         return (int) (unsigned long) m - 1;
 }
@@ -673,6 +644,16 @@ _public_ int sd_login_monitor_new(const char *category, sd_login_monitor **m) {
                 good = true;
         }
 
+        if (!category || streq(category, "machine")) {
+                k = inotify_add_watch(fd, "/run/systemd/machines/", IN_MOVED_TO|IN_DELETE);
+                if (k < 0) {
+                        close_nointr_nofail(fd);
+                        return -errno;
+                }
+
+                good = true;
+        }
+
         if (!good) {
                 close_nointr(fd);
                 return -EINVAL;