/* $Id: command.c,v 1.18 2003/10/20 15:19:41 hadess Exp $ */ /* Copyright (C) 1998-99 Martin Baulig This file is part of LibGTop 1.0. Contributed by Martin Baulig , April 1998. LibGTop is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. LibGTop is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with LibGTop; see the file COPYING. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include void * glibtop_call_l (glibtop *server, unsigned command, size_t send_size, const void *send_buf, size_t recv_size, void *recv_buf) { glibtop_command cmnd; glibtop_response response; glibtop_init_r (&server, 0, 0); memset (&cmnd, 0, sizeof (glibtop_command)); cmnd.command = command; /* If send_size is less than _GLIBTOP_PARAM_SIZE (normally 16 Bytes), we * send it together with command, so we only need one system call instead * of two. */ if (send_size memcpy (cmnd.parameter, send_buf, send_size); cmnd.size = send_size; } else { cmnd.data_size = send_size; } glibtop_write_l (server, sizeof (glibtop_command), &cmnd); glibtop_read_l (server, sizeof (glibtop_response), &response); #ifdef DEBUG fprintf (stderr, "RESPONSE: %lu - %d\n", response.offset, response.data_size); #endif if (recv_buf) memcpy (recv_buf, ((char *) &response) + response.offset, recv_size); if (response.data_size) { void *ptr = g_malloc (response.data_size); glibtop_read_l (server, response.data_size, ptr); return ptr; } return NULL; }
