Added initial processes Dbus object implementation with renice method
This commit is contained in:
Robert Roth
@@ -4,5 +4,5 @@ noinst_PROGRAMS = gtop-dbus-service
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AM_CPPFLAGS= ${GTOP_DBUS_CFLAGS}
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gtop_dbus_service_SOURCES = gtop-dbus-service.c
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gtop_dbus_service_SOURCES = gtop-dbus-service.h gtop-dbus-service.c
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gtop_dbus_service_LDADD = $(GTOP_DBUS_LIBS)
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@@ -1,23 +1,45 @@
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#include <gio/gio.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <config.h>
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#include <glib.h>
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#define MSG_PREFIX "[libgtop dbus server] "
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#include "gtop-dbus-service.h"
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static const gchar service[] = "org.gnome.gtopServer";
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// required for renice
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <errno.h>
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static const gchar object_name[] = "/org/gnome/gtopServer";
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static const gchar processes_object_name[] = "/org/gnome/gtopServer/Processes";
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#define VERBOSE 1
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/* ---------------------------------------------------------------------------------------------------- */
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static GDBusNodeInfo *introspection_data = NULL;
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/* Introspection data for the service we are exporting */
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static const gchar introspection_xml[] =
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"<node>"
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"<node name='/org/gnome/gtopServer'>"
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" <interface name='org.gnome.gtop'>"
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" <property type='s' name='Version' access='read'/>"
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" </interface>"
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" <interface name='org.gnome.gtop.Processes'>"
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" <method name='SendSignal'>"
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" <arg name='pid' type='i' direction='in' />"
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" <arg name='signal' type='i' direction='in' />"
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" </method>"
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" <method name='Renice'>"
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" <arg name='pid' type='i' direction='in' />"
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" <arg name='nice' type='i' direction='in' />"
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" </method>"
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" <method name='GetProperties'>"
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" <arg name='pid' type='i' direction='in' />"
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" <arg name='propertyList' type='as' direction='in' />"
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" <arg name='properties' type='a{sv}' direction='out' />"
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" </method>"
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" </interface>"
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"</node>";
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/**
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@@ -34,20 +56,53 @@ handle_method_call (GDBusConnection *connection,
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gpointer user_data)
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{
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#ifdef VERBOSE
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gchar *paramstr = g_variant_print (parameters, TRUE);
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fprintf (stderr, MSG_PREFIX
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"handle_method_call (%p,\"%s\",\"%s\",\"%s\",\"%s\",\"%s\",(invocation),%p)\n",
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connection, sender, object_path, interface_name, method_name,
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paramstr, user_data);
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g_free (paramstr);
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gchar *paramstr = g_variant_print (parameters, TRUE);
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fprintf (stderr, MSG_PREFIX
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"handle_method_call (%p,\"%s\",\"%s\",\"%s\",\"%s\",\"%s\",(invocation),%p)\n",
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connection, sender, object_path, interface_name, method_name,
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paramstr, user_data);
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g_free (paramstr);
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#endif
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if (g_strcmp0 (method_name, "Renice") == 0)
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{
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int pid, prio;
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g_variant_get (parameters, "(ii)", &pid, &prio);
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gint renice_result = setpriority (PRIO_PROCESS, pid, CLAMP(prio, PRIO_MIN, PRIO_MAX));
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#ifdef VERBOSE
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fprintf (stderr, MSG_PREFIX"renicing '%d' to '%d' priority returned %d", pid, prio, renice_result);
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#endif
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if (renice_result == 0)
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g_dbus_method_invocation_return_value (invocation, NULL);
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else {
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switch (errno) {
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case ESRCH: g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_NOT_FOUND,
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MSG_PREFIX "Process '%d' not found",
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pid);
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break;
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case EACCES:
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case EPERM: g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_PERMISSION_DENIED,
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MSG_PREFIX "Permission denied to change priority of process '%d' to '%d'",
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pid, prio);
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break;
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}
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}
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}
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// Anything else is an error.
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else
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{
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// Default: No such method
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g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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MSG_PREFIX "Invalid method: '%s'",
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method_name);
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g_dbus_method_invocation_return_error (invocation,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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MSG_PREFIX "Invalid method: '%s' on '%s'",
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method_name, interface_name);
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}
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} // handle_method_call
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/**
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@@ -150,7 +205,18 @@ on_bus_acquired (GDBusConnection *connection,
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NULL, // Optional user data
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NULL, // Func. for freeing user data
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&error);
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registration_id =
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g_dbus_connection_register_object (connection,
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processes_object_name,
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introspection_data->interfaces[1],
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&interface_vtable,
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NULL, // Optional user data
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NULL, // Func. for freeing user data
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&error);
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} // on_bus_acquired
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static void
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@@ -186,7 +252,7 @@ int main ( int argc, char ** argv ) {
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introspection_data = g_dbus_node_info_new_for_xml (introspection_xml, NULL);
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owner_id = g_bus_own_name (G_BUS_TYPE_SESSION,
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service,
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GTOP_SERVER,
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G_BUS_NAME_OWNER_FLAGS_NONE,
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on_bus_acquired,
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on_name_acquired,
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5
service/gtop-dbus-service.h
Normal file
5
service/gtop-dbus-service.h
Normal file
@@ -0,0 +1,5 @@
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#include <glib.h>
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#define MSG_PREFIX "[libgtop dbus server] "
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static const gchar GTOP_SERVER[] = "org.gnome.gtopServer";
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