109 lines
3.5 KiB
C
109 lines
3.5 KiB
C
/* $OpenBSD: proclist.c,v 1.3 2011/05/23 19:35:55 jasper Exp $ */
|
|
|
|
/* 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 <config.h>
|
|
#include <glibtop.h>
|
|
#include <glibtop/error.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. */
|
|
|
|
void
|
|
_glibtop_init_proclist_p (glibtop *server)
|
|
{
|
|
server->sysdeps.proclist = _glibtop_sysdeps_proclist;
|
|
}
|
|
|
|
pid_t *
|
|
glibtop_get_proclist_p (glibtop *server, glibtop_proclist *buf,
|
|
gint64 real_which, gint64 arg)
|
|
{
|
|
struct kinfo_proc2 *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_getproc2 (server->machine.kd, which, arg,
|
|
sizeof (*pinfo), &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 = g_realloc (pids, count * sizeof (unsigned));
|
|
/* Copy the pids over to this chain */
|
|
for (i=j=0; i < count; i++) {
|
|
#define PROC_STAT p_stat
|
|
#define PROC_RUID p_ruid
|
|
#define PROC_PID p_pid
|
|
|
|
if ((real_which & GLIBTOP_EXCLUDE_IDLE) &&
|
|
(pinfo[i].PROC_STAT != SRUN))
|
|
continue;
|
|
else if ((real_which & GLIBTOP_EXCLUDE_SYSTEM) &&
|
|
(pinfo[i].PROC_RUID == 0))
|
|
continue;
|
|
pids [j++] = (unsigned) pinfo[i].PROC_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;
|
|
}
|