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/* Copyright (C) 1998 Joshua Sled
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This file is part of LibGTop 1.0.
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Contributed by Joshua Sled <jsled@xcf.berkeley.edu>, July 1998.
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LibGTop is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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LibGTop is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with LibGTop; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include <config.h>
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#include <glibtop.h>
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#include <glibtop/error.h>
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#include <glibtop/proclist.h>
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#include <glibtop_suid.h>
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static const unsigned long _glibtop_sysdeps_proclist =
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(1L << GLIBTOP_PROCLIST_TOTAL) + (1L << GLIBTOP_PROCLIST_NUMBER) +
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(1L << GLIBTOP_PROCLIST_SIZE);
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/* Fetch list of currently running processes.
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* The interface of this function is a little bit different from the others:
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* buf->flags is only set if the call succeeded, in this case pids_chain,
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* a list of the pids of all currently running processes is returned,
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* buf->number is the number of elements of this list and buf->size is
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* the size of one single element (sizeof (unsigned)). The total size is
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* stored in buf->total.
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*
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* The calling function has to free the memory to which a pointer is returned.
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*
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* IMPORTANT NOTE:
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* On error, this function MUST return NULL and set buf->flags to zero !
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* On success, it returnes a pointer to a list of buf->number elements
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* each buf->size big. The total size is stored in buf->total.
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* The calling function has to free the memory to which a pointer is returned.
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*
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* On error, NULL is returned and buf->flags is zero. */
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/* Init function. */
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void
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_glibtop_init_proclist_p (glibtop *server)
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{
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server->sysdeps.proclist = _glibtop_sysdeps_proclist;
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}
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unsigned *
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glibtop_get_proclist_p (glibtop *server, glibtop_proclist *buf,
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gint64 real_which, gint64 arg)
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{
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struct kinfo_proc *pinfo;
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unsigned *pids = NULL;
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int which, count;
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int i,j;
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glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROCLIST), 0);
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memset (buf, 0, sizeof (glibtop_proclist));
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which = (int)(real_which & GLIBTOP_KERN_PROC_MASK);
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/* Get the process data */
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pinfo = kvm_getprocs (server->machine->kd, which, arg, &count);
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if ((pinfo == NULL) || (count < 1)) {
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glibtop_warn_io_r (server, "kvm_getprocs (proclist)");
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return NULL;
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}
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count--;
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/* Allocate count objects in the pids_chain array
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* Same as malloc is pids is NULL, which it is. */
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pids = g_realloc (pids, count * sizeof (unsigned));
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/* Copy the pids over to this chain */
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for (i=j=0; i < count; i++) {
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#if (defined(__FreeBSD__) && (__FreeBSD_version >= 500013)) || defined(__FreeBSD_kernel__)
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#define PROC_STAT ki_stat
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#define PROC_RUID ki_ruid
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#define PROC_PID ki_pid
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#else
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#define PROC_STAT kp_proc.p_stat
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#define PROC_RUID kp_eproc.e_pcred.p_ruid
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#define PROC_PID kp_proc.p_pid
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#endif
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if ((real_which & GLIBTOP_EXCLUDE_IDLE) &&
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(pinfo[i].PROC_STAT != SRUN))
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continue;
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else if ((real_which & GLIBTOP_EXCLUDE_SYSTEM) &&
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(pinfo[i].PROC_RUID == 0))
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continue;
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pids [j++] = (unsigned) pinfo[i].PROC_PID;
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} /* end for */
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/* Set the fields in buf */
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buf->number = j;
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buf->size = sizeof (unsigned);
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buf->total = j * sizeof (unsigned);
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buf->flags = _glibtop_sysdeps_proclist;
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return pids;
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}
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