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/* 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include <glibtop.h>
#include <glibtop/error.h>
#include <glibtop/proclist.h>
#include <glibtop/procstate.h>
#include <glibtop_suid.h>
#include <sys/types.h>
#include <sys/sysctl.h>
#include <sys/user.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 (pid_t)). 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 which, gint64 arg)
{
struct kinfo_proc *pinfo;
GArray *pids;
glibtop_proc_state procstate;
size_t len;
unsigned int i;
pid_t prev;
memset (buf, 0, sizeof (glibtop_proclist));
if (sysctlbyname ("kern.proc.all", NULL, &len, NULL, 0)) {
glibtop_warn_io_r (server, "sysctl (kern.proc.all)");
return NULL;
}
pinfo = (struct kinfo_proc *) g_malloc0 (len);
if (sysctlbyname ("kern.proc.all", pinfo, &len, NULL, 0)) {
glibtop_warn_io_r (server, "sysctl (kern.proc.all)");
g_free (pinfo);
return NULL;
}
len /= sizeof (struct kinfo_proc);
pids = g_array_sized_new (FALSE, FALSE, sizeof (pid_t), len);
for (i = 0; i < len; i++) {
pid_t pid;
pid = (pid_t) pinfo[i].ki_pid;
/* If a process has many threads, kern.proc.all reports multiple
times the same pid. So don't look twice at the same pid.
FIXME?: not sure that kern.proc.all reports a partially sorted
list (all pid/threads grouped).
*/
if (i > 0 && pid == prev) {
continue;
}
prev = pid;
switch (which & GLIBTOP_KERN_PROC_MASK) {
case GLIBTOP_KERN_PROC_ALL:
break;
case GLIBTOP_KERN_PROC_PID:
if ((pid_t) arg != pid)
continue;
break;
case GLIBTOP_KERN_PROC_UID:
if ((uid_t) arg != pinfo[i].ki_ruid)
continue;
break;
case GLIBTOP_KERN_PROC_PGRP:
if ((pid_t) arg != pinfo[i].ki_pgid)
continue;
break;
case GLIBTOP_KERN_PROC_SESSION:
if ((pid_t) arg != pinfo[i].ki_sid)
continue;
break;
case GLIBTOP_KERN_PROC_TTY:
if ((dev_t) arg != pinfo[i].ki_tdev)
continue;
break;
case GLIBTOP_KERN_PROC_RUID:
if ((uid_t) arg != pinfo[i].ki_ruid)
continue;
break;
}
if (which & GLIBTOP_EXCLUDE_NOTTY)
if (pinfo[i].ki_tdev == (dev_t) -1) continue;
if (which & GLIBTOP_EXCLUDE_IDLE) {
glibtop_get_proc_state_p (server, &procstate, pid);
if (procstate.flags & (1L << GLIBTOP_PROC_STATE_STATE))
if (procstate.state != GLIBTOP_PROCESS_RUNNING) continue;
if (pinfo[i].ki_ppid == 0 && !strcmp(pinfo[i].ki_comm, "idle"))
continue;
}
if (which & GLIBTOP_EXCLUDE_SYSTEM)
if (pinfo[i].ki_ruid == (uid_t) 0) continue;
g_array_append_val (pids, pid);
}
g_free (pinfo);
buf->flags = _glibtop_sysdeps_proclist;
buf->size = sizeof (pid_t);
buf->number = pids->len;
buf->total = buf->number * buf->size;
return (pid_t *) g_array_free (pids, FALSE);
}
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