chiark / gitweb /
[4/5] Apply missing fixes from upstream
[elogind.git] / src / login / logind-action.c
index 1928f43cd1c314191f872f21340466adac039734..9b2ec6e24258652fee94f4732886ba743e01b19f 100644 (file)
 #include <unistd.h>
 
 #include "sd-messages.h"
+#include "util.h"
+#include "strv.h"
+#include "fileio.h"
 #include "conf-parser.h"
-#include "special.h"
+// #include "special.h"
 #include "sleep-config.h"
-#include "bus-util.h"
 #include "bus-error.h"
+#include "bus-util.h"
 #include "logind-action.h"
+// #include "formats-util.h"
+#include "process-util.h"
+#include "terminal-util.h"
 
 int manager_handle_action(
                 Manager *m,
@@ -46,6 +52,8 @@ int manager_handle_action(
                 [HANDLE_HYBRID_SLEEP] = "Hibernating and suspending..."
         };
 
+/// elogind does this itself. No target table required
+#if 0
         static const char * const target_table[_HANDLE_ACTION_MAX] = {
                 [HANDLE_POWEROFF] = SPECIAL_POWEROFF_TARGET,
                 [HANDLE_REBOOT] = SPECIAL_REBOOT_TARGET,
@@ -55,6 +63,7 @@ int manager_handle_action(
                 [HANDLE_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
                 [HANDLE_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
         };
+#endif // 0
 
         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
         InhibitWhat inhibit_operation;
@@ -71,26 +80,6 @@ int manager_handle_action(
         }
 
         if (inhibit_key == INHIBIT_HANDLE_LID_SWITCH) {
-                int n;
-
-                /* If we are docked don't react to lid closing */
-                if (manager_is_docked(m)) {
-                        log_debug("Ignoring lid switch request, system is docked.");
-                        return 0;
-                }
-
-                /* If we have more than one or no displays connected,
-                 * don't react to lid closing. The no display case we
-                 * treat like this under the assumption that there is
-                 * no modern drm driver available. */
-                n = manager_count_displays(m);
-                if (n < 0)
-                        log_warning("Display counting failed: %s", strerror(-n));
-                else if (n != 1) {
-                        log_debug("Ignoring lid switch request, %i displays connected.", n);
-                        return 0;
-                }
-
                 /* If the last system suspend or startup is too close,
                  * let's not suspend for now, to give USB docking
                  * stations some time to settle so that we can
@@ -133,7 +122,7 @@ int manager_handle_action(
 
         if (!supported) {
                 log_warning("Requested operation not supported, ignoring.");
-                return -ENOTSUP;
+                return -EOPNOTSUPP;
         }
 
         if (m->action_what) {
@@ -153,25 +142,29 @@ int manager_handle_action(
 
                 /* If this is just a recheck of the lid switch then don't warn about anything */
                 if (!is_edge) {
-                        log_debug("Refusing operation, %s is inhibited by UID %lu/%s, PID %lu/%s.",
+                        log_debug("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
                                   inhibit_what_to_string(inhibit_operation),
-                                  (unsigned long) offending->uid, strna(u),
-                                  (unsigned long) offending->pid, strna(comm));
+                                  offending->uid, strna(u),
+                                  offending->pid, strna(comm));
                         return 0;
                 }
 
-                log_error("Refusing operation, %s is inhibited by UID %lu/%s, PID %lu/%s.",
+                log_error("Refusing operation, %s is inhibited by UID "UID_FMT"/%s, PID "PID_FMT"/%s.",
                           inhibit_what_to_string(inhibit_operation),
-                          (unsigned long) offending->uid, strna(u),
-                          (unsigned long) offending->pid, strna(comm));
+                          offending->uid, strna(u),
+                          offending->pid, strna(comm));
 
-                warn_melody();
                 return -EPERM;
         }
 
         log_info("%s", message_table[handle]);
 
+/// elogind uses its own variant, which can use the handle directly.
+#if 0
         r = bus_manager_shutdown_or_sleep_now_or_later(m, target_table[handle], inhibit_operation, &error);
+#else
+        r = bus_manager_shutdown_or_sleep_now_or_later(m, handle, inhibit_operation, &error);
+#endif // 0
         if (r < 0) {
                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
                 return r;
@@ -180,6 +173,143 @@ int manager_handle_action(
         return 1;
 }
 
+static int run_helper(const char *helper) {
+        int pid = fork();
+        if (pid < 0) {
+                return log_error_errno(errno, "Failed to fork: %m");
+        }
+
+        if (pid == 0) {
+                /* Child */
+
+                close_all_fds(NULL, 0);
+
+                execlp(helper, helper, NULL);
+                log_error_errno(errno, "Failed to execute %s: %m", helper);
+                _exit(EXIT_FAILURE);
+        }
+
+        return wait_for_terminate_and_warn(helper, pid, true);
+}
+
+static int write_mode(char **modes) {
+        int r = 0;
+        char **mode;
+
+        STRV_FOREACH(mode, modes) {
+                int k;
+
+                k = write_string_file("/sys/power/disk", *mode, 0);
+                if (k == 0)
+                        return 0;
+
+                log_debug_errno(k, "Failed to write '%s' to /sys/power/disk: %m",
+                                *mode);
+                if (r == 0)
+                        r = k;
+        }
+
+        if (r < 0)
+                log_error_errno(r, "Failed to write mode to /sys/power/disk: %m");
+
+        return r;
+}
+
+static int write_state(FILE **f, char **states) {
+        char **state;
+        int r = 0;
+
+        STRV_FOREACH(state, states) {
+                int k;
+
+                k = write_string_stream(*f, *state, true);
+                if (k == 0)
+                        return 0;
+                log_debug_errno(k, "Failed to write '%s' to /sys/power/state: %m",
+                                *state);
+                if (r == 0)
+                        r = k;
+
+                fclose(*f);
+                *f = fopen("/sys/power/state", "we");
+                if (!*f)
+                        return log_error_errno(errno, "Failed to open /sys/power/state: %m");
+        }
+
+        return r;
+}
+
+static int do_sleep(const char *arg_verb, char **modes, char **states) {
+        char *arguments[] = {
+                NULL,
+                (char*) "pre",
+                (char*) arg_verb,
+                NULL
+        };
+        static const char* const dirs[] = {SYSTEM_SLEEP_PATH, NULL};
+
+        int r;
+        _cleanup_fclose_ FILE *f = NULL;
+
+        /* This file is opened first, so that if we hit an error,
+         * we can abort before modifying any state. */
+        f = fopen("/sys/power/state", "we");
+        if (!f)
+                return log_error_errno(errno, "Failed to open /sys/power/state: %m");
+
+        /* Configure the hibernation mode */
+        r = write_mode(modes);
+        if (r < 0)
+                return r;
+
+        execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
+
+        log_struct(LOG_INFO,
+                   LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_START),
+                   LOG_MESSAGE("Suspending system..."),
+                   "SLEEP=%s", arg_verb,
+                   NULL);
+
+        r = write_state(&f, states);
+        if (r < 0)
+                return r;
+
+        log_struct(LOG_INFO,
+                   LOG_MESSAGE_ID(SD_MESSAGE_SLEEP_STOP),
+                   LOG_MESSAGE("System resumed."),
+                   "SLEEP=%s", arg_verb,
+                   NULL);
+
+        arguments[1] = (char*) "post";
+        execute_directories(dirs, DEFAULT_TIMEOUT_USEC, arguments);
+
+        return r;
+}
+
+int shutdown_or_sleep(Manager *m, HandleAction action) {
+
+        assert(m);
+
+        switch (action) {
+        case HANDLE_POWEROFF:
+                return run_helper(HALT);
+        case HANDLE_REBOOT:
+                return run_helper(REBOOT);
+        case HANDLE_HALT:
+                return run_helper(HALT);
+        case HANDLE_KEXEC:
+                return run_helper(KEXEC);
+        case HANDLE_SUSPEND:
+                return do_sleep("suspend", m->suspend_mode, m->suspend_state);
+        case HANDLE_HIBERNATE:
+                return do_sleep("hibernate", m->hibernate_mode, m->hibernate_state);
+        case HANDLE_HYBRID_SLEEP:
+                return do_sleep("hybrid-sleep", m->hybrid_sleep_mode, m->hybrid_sleep_state);
+        default:
+                return -EINVAL;
+        }
+}
+
 static const char* const handle_action_table[_HANDLE_ACTION_MAX] = {
         [HANDLE_IGNORE] = "ignore",
         [HANDLE_POWEROFF] = "poweroff",