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/* Copyright (C) 1998-99 Martin Baulig
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This file is part of LibGTop 1.0.
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Contributed by Martin Baulig <martin@home-of-linux.org>, April 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop/error.h>
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#include <glibtop/read.h>
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#include <glibtop/write.h>
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#include <glibtop/read_data.h>
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#include <glibtop/command.h>
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void *
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glibtop_call_l (glibtop *server, unsigned command, size_t send_size,
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const void *send_buf, size_t recv_size, void *recv_buf)
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{
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glibtop_command cmnd = {0};
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glibtop_response response = {0};
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glibtop_init_r (&server, 0, 0);
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g_assert(command >= GLIBTOP_CMND_QUIT && command < GLIBTOP_MAX_CMND);
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switch (command) {
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#define CHECK_CMND(CMND) case (CMND): glibtop_debug("CALL: command %s sending %lu bytes", #CMND, (unsigned long)send_size); break
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CHECK_CMND(GLIBTOP_CMND_QUIT);
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CHECK_CMND(GLIBTOP_CMND_SYSDEPS);
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CHECK_CMND(GLIBTOP_CMND_CPU);
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CHECK_CMND(GLIBTOP_CMND_MEM);
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CHECK_CMND(GLIBTOP_CMND_SWAP);
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CHECK_CMND(GLIBTOP_CMND_UPTIME);
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CHECK_CMND(GLIBTOP_CMND_LOADAVG);
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CHECK_CMND(GLIBTOP_CMND_SHM_LIMITS);
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CHECK_CMND(GLIBTOP_CMND_MSG_LIMITS);
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CHECK_CMND(GLIBTOP_CMND_SEM_LIMITS);
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CHECK_CMND(GLIBTOP_CMND_PROCLIST);
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CHECK_CMND(GLIBTOP_CMND_PROC_STATE);
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CHECK_CMND(GLIBTOP_CMND_PROC_UID);
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CHECK_CMND(GLIBTOP_CMND_PROC_MEM);
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CHECK_CMND(GLIBTOP_CMND_PROC_TIME);
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CHECK_CMND(GLIBTOP_CMND_PROC_SIGNAL);
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CHECK_CMND(GLIBTOP_CMND_PROC_KERNEL);
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CHECK_CMND(GLIBTOP_CMND_PROC_SEGMENT);
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CHECK_CMND(GLIBTOP_CMND_PROC_ARGS);
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CHECK_CMND(GLIBTOP_CMND_PROC_MAP);
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CHECK_CMND(GLIBTOP_CMND_MOUNTLIST);
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CHECK_CMND(GLIBTOP_CMND_FSUSAGE);
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CHECK_CMND(GLIBTOP_CMND_NETLOAD);
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CHECK_CMND(GLIBTOP_CMND_PPP);
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CHECK_CMND(GLIBTOP_CMND_NETLIST);
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CHECK_CMND(GLIBTOP_CMND_PROC_OPEN_FILES);
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CHECK_CMND(GLIBTOP_CMND_PROC_WD);
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CHECK_CMND(GLIBTOP_CMND_PROC_AFFINITY);
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CHECK_CMND(GLIBTOP_CMND_PROC_IO);
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default:
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glibtop_error_r(server, "CALL: command UNKNOWN(%d) sending %lu bytes", command, (unsigned long)send_size); break;
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}
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#undef CHECK_CMND
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cmnd.command = command;
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/* If send_size is less than _GLIBTOP_PARAM_SIZE (normally 16 Bytes), we
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* send it together with command, so we only need one system call instead
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* of two. */
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if (send_size <= _GLIBTOP_PARAM_SIZE) {
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memcpy (cmnd.parameter, send_buf, send_size);
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cmnd.size = send_size;
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} else {
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cmnd.data_size = send_size;
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}
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glibtop_write_l (server, sizeof (glibtop_command), &cmnd);
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glibtop_read_l (server, sizeof (glibtop_response), &response);
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glibtop_debug ("RESPONSE: offset=%lu - data_size=%lu",
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response.offset, response.data_size);
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if (recv_buf)
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memcpy (recv_buf, ((char *) &response) + response.offset,
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recv_size);
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if (response.data_size) {
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void *ptr = g_malloc (response.data_size);
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glibtop_read_l (server, response.data_size, ptr);
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return ptr;
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}
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return NULL;
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}
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