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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* $Id$ */
/* Copyright (C) 1998 Joshua Sled
This file is part of LibGTop 1.0.
Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 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/xmalloc.h>
#include <glibtop/proclist.h>
#include <glibtop_suid.h>
static const unsigned long _glibtop_sysdeps_proclist =
(1L << GLIBTOP_PROCLIST_TOTAL) + (1L << GLIBTOP_PROCLIST_NUMBER) +
(1L << GLIBTOP_PROCLIST_SIZE);
/* Fetch list of currently running processes.
* The interface of this function is a little bit different from the others:
* buf->flags is only set if the call succeeded, in this case pids_chain,
* a list of the pids of all currently running processes is returned,
* buf->number is the number of elements of this list and buf->size is
* the size of one single element (sizeof (unsigned)). The total size is
* stored in buf->total.
*
* The calling function has to free the memory to which a pointer is returned.
*
* IMPORTANT NOTE:
* On error, this function MUST return NULL and set buf->flags to zero !
* On success, it returnes a pointer to a list of buf->number elements
* each buf->size big. The total size is stored in buf->total.
* The calling function has to free the memory to which a pointer is returned.
*
* On error, NULL is returned and buf->flags is zero. */
/* Init function. */
int
glibtop_init_proclist_p (glibtop *server)
{
server->sysdeps.proclist = _glibtop_sysdeps_proclist;
return 0;
}
unsigned *
glibtop_get_proclist_p (glibtop *server, glibtop_proclist *buf,
int64_t real_which, int64_t arg)
{
struct kinfo_proc *pinfo;
unsigned *pids = NULL;
int which, count;
int i,j;
glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROCLIST), 0);
memset (buf, 0, sizeof (glibtop_proclist));
which = (int)(real_which & GLIBTOP_KERN_PROC_MASK);
/* Get the process data */
pinfo = kvm_getprocs (server->_priv->machine.kd, which, arg, &count);
if ((pinfo == NULL) || (count < 1)) {
glibtop_warn_io_r (server, "kvm_getprocs (proclist)");
return NULL;
}
count--;
/* Allocate count objects in the pids_chain array
* Same as malloc is pids is NULL, which it is. */
pids = glibtop_realloc_r (server, pids, count * sizeof (unsigned));
/* Copy the pids over to this chain */
for (i=j=0; i < count; i++) {
if ((real_which & GLIBTOP_EXCLUDE_IDLE) &&
(pinfo[i].kp_proc.p_stat != SRUN))
continue;
else if ((real_which & GLIBTOP_EXCLUDE_SYSTEM) &&
(pinfo[i].kp_eproc.e_pcred.p_ruid == 0))
continue;
pids [j++] = (unsigned) pinfo[i].kp_proc.p_pid;
} /* end for */
/* Set the fields in buf */
buf->number = j;
buf->size = sizeof (unsigned);
buf->total = j * sizeof (unsigned);
buf->flags = _glibtop_sysdeps_proclist;
return pids;
}
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