101 lines
2.3 KiB
C
101 lines
2.3 KiB
C
/* $Id$ */
|
|
|
|
/* 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 <glibtop.h>
|
|
#include <glibtop/error.h>
|
|
#include <glibtop/procargs.h>
|
|
|
|
static const unsigned long _glibtop_sysdeps_proc_args =
|
|
(1L << GLIBTOP_PROC_ARGS_SIZE);
|
|
|
|
/* Init function. */
|
|
|
|
void
|
|
glibtop_init_proc_args_s (glibtop *server)
|
|
{
|
|
server->sysdeps.proc_args = _glibtop_sysdeps_proc_args;
|
|
}
|
|
|
|
/* Provides detailed information about a process. */
|
|
|
|
char *
|
|
glibtop_get_proc_args_s (glibtop *server, glibtop_proc_args *buf,
|
|
pid_t pid, unsigned max_len)
|
|
{
|
|
char fn [BUFSIZ], buffer [BUFSIZ];
|
|
int cmdline, len, total = 0;
|
|
char *retval = NULL;
|
|
|
|
glibtop_init_s (&server, GLIBTOP_SYSDEPS_PROC_ARGS, 0);
|
|
|
|
memset (buf, 0, sizeof (glibtop_proc_args));
|
|
|
|
sprintf (fn, "/proc/%d/cmdline", pid);
|
|
|
|
cmdline = open (fn, O_RDONLY);
|
|
if (cmdline < 0) return NULL;
|
|
|
|
if (max_len) {
|
|
retval = g_malloc (max_len+1);
|
|
|
|
len = read (cmdline, retval, max_len);
|
|
close (cmdline);
|
|
|
|
if (len < 0) {
|
|
g_free (retval);
|
|
return NULL;
|
|
}
|
|
|
|
*(retval+len) = 0;
|
|
|
|
buf->size = len;
|
|
buf->flags = _glibtop_sysdeps_proc_args;
|
|
|
|
return retval;
|
|
}
|
|
|
|
while (1) {
|
|
len = read (cmdline, buffer, BUFSIZ-1);
|
|
if (len < 0) {
|
|
close (cmdline);
|
|
g_free (retval);
|
|
return NULL;
|
|
}
|
|
|
|
if (len == 0)
|
|
break;
|
|
|
|
retval = g_realloc (retval, total+len+1);
|
|
memcpy (retval+total, buffer, len);
|
|
*(retval+total+len) = 0;
|
|
total += len;
|
|
}
|
|
|
|
close (cmdline);
|
|
|
|
buf->size = total;
|
|
buf->flags = _glibtop_sysdeps_proc_args;
|
|
|
|
return retval;
|
|
}
|