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/* $Id$ */
/* 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., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include "daemon.h"
void
do_output (int s, glibtop_response *resp, off_t offset,
size_t data_size, const void *data)
{
#ifdef REAL_DEBUG
fprintf (stderr, "Really writing %d bytes at offset %lu.\n",
sizeof (glibtop_response), offset);
#endif
resp->offset = offset;
resp->data_size = data_size;
if (s == 0) {
if (write (1, (const void *) resp, sizeof (glibtop_response)) < 0)
glibtop_warn_io ("write");
} else {
if (send (s, (const void *) resp, sizeof (glibtop_response), 0) < 0)
glibtop_warn_io ("send");
}
if (resp->data_size) {
#ifdef REAL_DEBUG
fprintf (stderr, "Writing %d bytes of data.\n", resp->data_size);
#endif
if (s == 0) {
if (write (1, data, resp->data_size) < 0)
glibtop_warn_io ("write");
} else {
if (send (s, data, resp->data_size, 0) , 0)
glibtop_warn_io ("send");
}
}
}
int
do_read (int s, void *ptr, size_t total_size)
{
int nread;
size_t already_read = 0, remaining = total_size;
while (already_read < total_size) {
if (s)
nread = recv (s, ptr, remaining, 0);
else
nread = read (0, ptr, remaining);
if ((already_read == 0) && (nread == 0)) {
glibtop_warn ("pid %d received eof.", getpid ());
return 0;
}
if (nread <= 0) {
glibtop_warn_io ("recv");
return 0;
}
already_read += nread;
remaining -= nread;
(char *) ptr += nread;
#ifdef REAL_DEBUG
fprintf (stderr, "READ (%d): %d - %d - %d\n",
nread, already_read, remaining, total_size);
#endif
}
return already_read;
}
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