X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Flogin%2Flogind-user.c;h=987244e27ec1f2cfd5e55e699ca0376dce8ae0a9;hp=0aac3bcf52dc68d2d5890f4900c1d7aaab687661;hb=1b99ea27bc3ffa1fc6f7cfe89563d891a9aed4c5;hpb=162255186046fa7a5e82859b7dba5a7909ce6fc4

diff --git a/src/login/logind-user.c b/src/login/logind-user.c
index 0aac3bcf5..987244e27 100644
--- a/src/login/logind-user.c
+++ b/src/login/logind-user.c
@@ -26,6 +26,7 @@
 
 #include "util.h"
 #include "mkdir.h"
+#include "rm-rf.h"
 #include "hashmap.h"
 #include "fileio.h"
 #include "path-util.h"
@@ -37,6 +38,7 @@
 #include "clean-ipc.h"
 #include "logind-user.h"
 #include "smack-util.h"
+#include "formats-util.h"
 
 User* user_new(Manager *m, uid_t uid, gid_t gid, const char *name) {
         User *u;
@@ -81,6 +83,19 @@ void user_free(User *u) {
         while (u->sessions)
                 session_free(u->sessions);
 
+        if (u->slice) {
+                hashmap_remove(u->manager->user_units, u->slice);
+                free(u->slice);
+        }
+
+        if (u->service) {
+                hashmap_remove(u->manager->user_units, u->service);
+                free(u->service);
+        }
+
+        free(u->slice_job);
+        free(u->service_job);
+
         free(u->runtime_path);
 
         hashmap_remove(u->manager->users, UID_TO_PTR(u->uid));
@@ -103,11 +118,11 @@ int user_save(User *u) {
 
         r = mkdir_safe_label("/run/systemd/users", 0755, 0, 0);
         if (r < 0)
-                goto finish;
+                goto fail;
 
         r = fopen_temporary(u->state_file, &f, &temp_path);
         if (r < 0)
-                goto finish;
+                goto fail;
 
         fchmod(fileno(f), 0644);
 
@@ -121,6 +136,16 @@ int user_save(User *u) {
         if (u->runtime_path)
                 fprintf(f, "RUNTIME=%s\n", u->runtime_path);
 
+        if (u->service)
+                fprintf(f, "SERVICE=%s\n", u->service);
+        if (u->service_job)
+                fprintf(f, "SERVICE_JOB=%s\n", u->service_job);
+
+        if (u->slice)
+                fprintf(f, "SLICE=%s\n", u->slice);
+        if (u->slice_job)
+                fprintf(f, "SLICE_JOB=%s\n", u->slice_job);
+
         if (u->display)
                 fprintf(f, "DISPLAY=%s\n", u->display->id);
 
@@ -218,19 +243,24 @@ int user_save(User *u) {
                 fputc('\n', f);
         }
 
-        fflush(f);
+        r = fflush_and_check(f);
+        if (r < 0)
+                goto fail;
 
-        if (ferror(f) || rename(temp_path, u->state_file) < 0) {
+        if (rename(temp_path, u->state_file) < 0) {
                 r = -errno;
-                unlink(u->state_file);
-                unlink(temp_path);
+                goto fail;
         }
 
-finish:
-        if (r < 0)
-                log_error_errno(r, "Failed to save user data %s: %m", u->state_file);
+        return 0;
 
-        return r;
+fail:
+        (void) unlink(u->state_file);
+
+        if (temp_path)
+                (void) unlink(temp_path);
+
+        return log_error_errno(r, "Failed to save user data %s: %m", u->state_file);
 }
 
 int user_load(User *u) {
@@ -242,6 +272,10 @@ int user_load(User *u) {
 
         r = parse_env_file(u->state_file, NEWLINE,
                            "RUNTIME",     &u->runtime_path,
+                           "SERVICE",     &u->service,
+                           "SERVICE_JOB", &u->service_job,
+                           "SLICE",       &u->slice,
+                           "SLICE_JOB",   &u->slice_job,
                            "DISPLAY",     &display,
                            "REALTIME",    &realtime,
                            "MONOTONIC",   &monotonic,
@@ -338,6 +372,72 @@ fail:
         return r;
 }
 
+static int user_start_slice(User *u) {
+        char *job;
+        int r;
+
+        assert(u);
+
+        if (!u->slice) {
+                _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+                char lu[DECIMAL_STR_MAX(uid_t) + 1], *slice;
+                sprintf(lu, UID_FMT, u->uid);
+
+                r = slice_build_subslice(SPECIAL_USER_SLICE, lu, &slice);
+                if (r < 0)
+                        return r;
+
+                r = manager_start_unit(u->manager, slice, &error, &job);
+                if (r < 0) {
+                        log_error("Failed to start user slice: %s", bus_error_message(&error, r));
+                        free(slice);
+                } else {
+                        u->slice = slice;
+
+                        free(u->slice_job);
+                        u->slice_job = job;
+                }
+        }
+
+        if (u->slice)
+                hashmap_put(u->manager->user_units, u->slice, u);
+
+        return 0;
+}
+
+static int user_start_service(User *u) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        char *job;
+        int r;
+
+        assert(u);
+
+        if (!u->service) {
+                char lu[DECIMAL_STR_MAX(uid_t) + 1], *service;
+                sprintf(lu, UID_FMT, u->uid);
+
+                r = unit_name_build("user", lu, ".service", &service);
+                if (r < 0)
+                        return log_error_errno(r, "Failed to build service name: %m");
+
+                r = manager_start_unit(u->manager, service, &error, &job);
+                if (r < 0) {
+                        log_error("Failed to start user service: %s", bus_error_message(&error, r));
+                        free(service);
+                } else {
+                        u->service = service;
+
+                        free(u->service_job);
+                        u->service_job = job;
+                }
+        }
+
+        if (u->service)
+                hashmap_put(u->manager->user_units, u->service, u);
+
+        return 0;
+}
+
 int user_start(User *u) {
         int r;
 
@@ -353,6 +453,16 @@ int user_start(User *u) {
         if (r < 0)
                 return r;
 
+        /* Create cgroup */
+        r = user_start_slice(u);
+        if (r < 0)
+                return r;
+
+        /* Spawn user systemd */
+        r = user_start_service(u);
+        if (r < 0)
+                return r;
+
         if (!dual_timestamp_is_set(&u->timestamp))
                 dual_timestamp_get(&u->timestamp);
 
@@ -366,6 +476,50 @@ int user_start(User *u) {
         return 0;
 }
 
+static int user_stop_slice(User *u) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        char *job;
+        int r;
+
+        assert(u);
+
+        if (!u->slice)
+                return 0;
+
+        r = manager_stop_unit(u->manager, u->slice, &error, &job);
+        if (r < 0) {
+                log_error("Failed to stop user slice: %s", bus_error_message(&error, r));
+                return r;
+        }
+
+        free(u->slice_job);
+        u->slice_job = job;
+
+        return r;
+}
+
+static int user_stop_service(User *u) {
+        _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+        char *job;
+        int r;
+
+        assert(u);
+
+        if (!u->service)
+                return 0;
+
+        r = manager_stop_unit(u->manager, u->service, &error, &job);
+        if (r < 0) {
+                log_error("Failed to stop user service: %s", bus_error_message(&error, r));
+                return r;
+        }
+
+        free(u->service_job);
+        u->service_job = job;
+
+        return r;
+}
+
 static int user_remove_runtime_path(User *u) {
         int r;
 
@@ -374,7 +528,7 @@ static int user_remove_runtime_path(User *u) {
         if (!u->runtime_path)
                 return 0;
 
-        r = rm_rf(u->runtime_path, false, false, false);
+        r = rm_rf(u->runtime_path, 0);
         if (r < 0)
                 log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path);
 
@@ -385,7 +539,7 @@ static int user_remove_runtime_path(User *u) {
         if (r < 0 && errno != EINVAL && errno != ENOENT)
                 log_error_errno(errno, "Failed to unmount user runtime directory %s: %m", u->runtime_path);
 
-        r = rm_rf(u->runtime_path, false, true, false);
+        r = rm_rf(u->runtime_path, REMOVE_ROOT);
         if (r < 0)
                 log_error_errno(r, "Failed to remove runtime directory %s: %m", u->runtime_path);
 
@@ -412,6 +566,16 @@ int user_stop(User *u, bool force) {
                         r = k;
         }
 
+        /* Kill systemd */
+        k = user_stop_service(u);
+        if (k < 0)
+                r = k;
+
+        /* Kill cgroup */
+        k = user_stop_slice(u);
+        if (k < 0)
+                r = k;
+
         u->stopping = true;
 
         user_save(u);
@@ -518,6 +682,12 @@ bool user_check_gc(User *u, bool drop_not_started) {
         if (user_check_linger_file(u) > 0)
                 return true;
 
+        if (u->slice_job && manager_job_is_active(u->manager, u->slice_job))
+                return true;
+
+        if (u->service_job && manager_job_is_active(u->manager, u->service_job))
+                return true;
+
         return false;
 }
 
@@ -539,6 +709,9 @@ UserState user_get_state(User *u) {
         if (u->stopping)
                 return USER_CLOSING;
 
+        if (u->slice_job || u->service_job)
+                return USER_OPENING;
+
         if (u->sessions) {
                 bool all_closing = true;
 
@@ -562,18 +735,12 @@ UserState user_get_state(User *u) {
 }
 
 int user_kill(User *u, int signo) {
-        Session *s;
-        int res = 0;
-
         assert(u);
 
-        LIST_FOREACH(sessions_by_user, s, u->sessions) {
-                int r = session_kill(s, KILL_ALL, signo);
-                if (res == 0 && r < 0)
-                        res = r;
-        }
+        if (!u->slice)
+                return -ESRCH;
 
-        return res;
+        return manager_kill_unit(u->manager, u->slice, KILL_ALL, signo, NULL);
 }
 
 void user_elect_display(User *u) {