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authorTom Gundersen <teg@jklm.no>2013-08-12 02:51:56 +0200
committerTom Gundersen <teg@jklm.no>2013-10-18 06:21:26 +0200
commit89456fcee469882bad8566aa0947c7aadadfde91 (patch)
tree6d8f791e0177b657d9ce0b8574972663d260cf81 /src/update-utmp
parent96c374d0a536286e18cad64d1b5ebb8f07c90334 (diff)
update-utmp: port to sd-bus
Change from GetUnit to LoadUnit to make sure we can detect the current legacy runlevel, even if nothing loaded the legacy target files yet.
Diffstat (limited to 'src/update-utmp')
-rw-r--r--src/update-utmp/update-utmp.c165
1 files changed, 57 insertions, 108 deletions
diff --git a/src/update-utmp/update-utmp.c b/src/update-utmp/update-utmp.c
index 202aa9876..f5c143d39 100644
--- a/src/update-utmp/update-utmp.c
+++ b/src/update-utmp/update-utmp.c
@@ -25,68 +25,56 @@
#include <sys/types.h>
#include <unistd.h>
-#include <dbus/dbus.h>
-
#ifdef HAVE_AUDIT
#include <libaudit.h>
#endif
+#include "sd-bus.h"
+
#include "log.h"
#include "macro.h"
#include "util.h"
#include "special.h"
#include "utmp-wtmp.h"
-#include "dbus-common.h"
+#include "bus-util.h"
+#include "bus-error.h"
typedef struct Context {
- DBusConnection *bus;
+ sd_bus *bus;
#ifdef HAVE_AUDIT
int audit_fd;
#endif
} Context;
static usec_t get_startup_time(Context *c) {
- const char
- *interface = "org.freedesktop.systemd1.Manager",
- *property = "UserspaceTimestamp";
-
usec_t t = 0;
- DBusMessage *reply = NULL;
- DBusMessageIter iter, sub;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
assert(c);
- if (bus_method_call_with_reply (
+ r = sd_bus_call_method(
c->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.DBus.Properties",
"Get",
+ &error,
&reply,
- NULL,
- DBUS_TYPE_STRING, &interface,
- DBUS_TYPE_STRING, &property,
- DBUS_TYPE_INVALID))
- goto finish;
-
- if (!dbus_message_iter_init(reply, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
- log_error("Failed to parse reply.");
- goto finish;
+ "ss",
+ "org.freedesktop.systemd1.Manager",
+ "UserspaceTimestamp");
+ if (r < 0) {
+ log_error("Failed to get timestamp: %s", bus_error_message(&error, -r));
+ return t;
}
- dbus_message_iter_recurse(&iter, &sub);
-
- if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT64) {
- log_error("Failed to parse reply.");
- goto finish;
+ r = sd_bus_message_read(reply, "v", "t", &t);
+ if (r < 0) {
+ log_error("Failed to parse reply: %s", strerror(-r));
}
- dbus_message_iter_get_basic(&sub, &t);
-
-finish:
- if (reply)
- dbus_message_unref(reply);
return t;
}
@@ -106,95 +94,65 @@ static int get_current_runlevel(Context *c) {
{ '2', SPECIAL_RUNLEVEL2_TARGET },
{ '1', SPECIAL_RESCUE_TARGET },
};
- const char
- *interface = "org.freedesktop.systemd1.Unit",
- *property = "ActiveState";
- DBusMessage *reply = NULL;
- int r = 0;
+ _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ int r;
unsigned i;
- DBusError error;
assert(c);
- dbus_error_init(&error);
-
for (i = 0; i < ELEMENTSOF(table); i++) {
+ _cleanup_bus_message_unref_ sd_bus_message *reply1 = NULL, *reply2 = NULL;
const char *path = NULL, *state;
- DBusMessageIter iter, sub;
- r = bus_method_call_with_reply (
+ r = sd_bus_call_method(
c->bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
- "GetUnit",
- &reply,
- NULL,
- DBUS_TYPE_STRING, &table[i].special,
- DBUS_TYPE_INVALID);
- if (r == -ENOMEM)
- goto finish;
- if (r)
- continue;
-
- if (!dbus_message_get_args(reply, &error,
- DBUS_TYPE_OBJECT_PATH, &path,
- DBUS_TYPE_INVALID)) {
- log_error("Failed to parse reply: %s", bus_error_message(&error));
- r = -EIO;
- goto finish;
+ "LoadUnit",
+ &error,
+ &reply1,
+ "s", table[i].special);
+ if (r < 0) {
+ log_error("Failed to get runlevel: %s", bus_error_message(&error, -r));
+ if (r == -ENOMEM)
+ return r;
+ else
+ continue;
}
- dbus_message_unref(reply);
- r = bus_method_call_with_reply (
+ r = sd_bus_message_read(reply1, "o", &path);
+ if (r < 0) {
+ log_error("Failed to parse reply: %s", strerror(-r));
+ return -EIO;
+ }
+
+ r = sd_bus_call_method(
c->bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.DBus.Properties",
"Get",
- &reply,
- NULL,
- DBUS_TYPE_STRING, &interface,
- DBUS_TYPE_STRING, &property,
- DBUS_TYPE_INVALID);
- if (r)
- goto finish;
-
- if (!dbus_message_iter_init(reply, &iter) ||
- dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
- log_error("Failed to parse reply.");
- r = -EIO;
- goto finish;
+ &error,
+ &reply2,
+ "ss", "org.freedesktop.systemd1.Unit", "ActiveState");
+ if (r < 0) {
+ log_error("Failed to get state: %s", bus_error_message(&error, -r));
+ return r;
}
- dbus_message_iter_recurse(&iter, &sub);
-
- if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
- log_error("Failed to parse reply.");
- r = -EIO;
- goto finish;
+ r = sd_bus_message_read(reply2, "v", "s", &state);
+ if (r < 0) {
+ log_error("Failed to parse reply: %s", strerror(-r));
+ return -EIO;
}
- dbus_message_iter_get_basic(&sub, &state);
-
if (streq(state, "active") || streq(state, "reloading"))
- r = table[i].runlevel;
-
- dbus_message_unref(reply);
- reply = NULL;
-
- if (r)
- break;
+ return table[i].runlevel;
}
-finish:
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return r;
+ return 0;
}
static int on_reboot(Context *c) {
@@ -312,11 +270,8 @@ static int on_runlevel(Context *c) {
int main(int argc, char *argv[]) {
int r;
- DBusError error;
Context c = {};
- dbus_error_init(&error);
-
#ifdef HAVE_AUDIT
c.audit_fd = -1;
#endif
@@ -344,9 +299,9 @@ int main(int argc, char *argv[]) {
errno != EAFNOSUPPORT && errno != EPROTONOSUPPORT)
log_error("Failed to connect to audit log: %m");
#endif
-
- if (bus_connect(DBUS_BUS_SYSTEM, &c.bus, NULL, &error) < 0) {
- log_error("Failed to get D-Bus connection: %s", bus_error_message(&error));
+ r = bus_connect_system(&c.bus);
+ if (r < 0) {
+ log_error("Failed to get D-Bus connection: %s", strerror(-r));
r = -EIO;
goto finish;
}
@@ -372,14 +327,8 @@ finish:
audit_close(c.audit_fd);
#endif
- if (c.bus) {
- dbus_connection_flush(c.bus);
- dbus_connection_close(c.bus);
- dbus_connection_unref(c.bus);
- }
-
- dbus_error_free(&error);
- dbus_shutdown();
+ if (c.bus)
+ sd_bus_unref(c.bus);
return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
}