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/* Copyright (C) 1998-99 Martin Baulig
This file is part of LibGTop 1.0.
Contributed by Martin Baulig <martin@home-of-linux.org>, 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop/error.h>
#include <glibtop/read.h>
#include <glibtop/write.h>
#include <glibtop/read_data.h>
#include <glibtop/command.h>
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 = {0};
glibtop_response response = {0};
glibtop_init_r (&server, 0, 0);
g_assert(command >= GLIBTOP_CMND_QUIT && command < GLIBTOP_MAX_CMND);
switch (command) {
#define CHECK_CMND(CMND) case (CMND): glibtop_debug("CALL: command %s sending %lu bytes", #CMND, (unsigned long)send_size); break
CHECK_CMND(GLIBTOP_CMND_QUIT);
CHECK_CMND(GLIBTOP_CMND_SYSDEPS);
CHECK_CMND(GLIBTOP_CMND_CPU);
CHECK_CMND(GLIBTOP_CMND_MEM);
CHECK_CMND(GLIBTOP_CMND_SWAP);
CHECK_CMND(GLIBTOP_CMND_UPTIME);
CHECK_CMND(GLIBTOP_CMND_LOADAVG);
CHECK_CMND(GLIBTOP_CMND_SHM_LIMITS);
CHECK_CMND(GLIBTOP_CMND_MSG_LIMITS);
CHECK_CMND(GLIBTOP_CMND_SEM_LIMITS);
CHECK_CMND(GLIBTOP_CMND_PROCLIST);
CHECK_CMND(GLIBTOP_CMND_PROC_STATE);
CHECK_CMND(GLIBTOP_CMND_PROC_UID);
CHECK_CMND(GLIBTOP_CMND_PROC_MEM);
CHECK_CMND(GLIBTOP_CMND_PROC_TIME);
CHECK_CMND(GLIBTOP_CMND_PROC_SIGNAL);
CHECK_CMND(GLIBTOP_CMND_PROC_KERNEL);
CHECK_CMND(GLIBTOP_CMND_PROC_SEGMENT);
CHECK_CMND(GLIBTOP_CMND_PROC_ARGS);
CHECK_CMND(GLIBTOP_CMND_PROC_MAP);
CHECK_CMND(GLIBTOP_CMND_MOUNTLIST);
CHECK_CMND(GLIBTOP_CMND_FSUSAGE);
CHECK_CMND(GLIBTOP_CMND_NETLOAD);
CHECK_CMND(GLIBTOP_CMND_PPP);
CHECK_CMND(GLIBTOP_CMND_NETLIST);
CHECK_CMND(GLIBTOP_CMND_PROC_OPEN_FILES);
CHECK_CMND(GLIBTOP_CMND_PROC_WD);
CHECK_CMND(GLIBTOP_CMND_PROC_AFFINITY);
CHECK_CMND(GLIBTOP_CMND_PROC_IO);
default:
glibtop_error_r(server, "CALL: command UNKNOWN(%d) sending %lu bytes", command, (unsigned long)send_size); break;
}
#undef CHECK_CMND
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 <= _GLIBTOP_PARAM_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);
glibtop_debug ("RESPONSE: offset=%lu - data_size=%lu",
response.offset, response.data_size);
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;
}
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