/* 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/procstate.h>

#include <glibtop_suid.h>

static const unsigned long _glibtop_sysdeps_proc_state =

(1L << GLIBTOP_PROC_STATE_CMD) + (1L << GLIBTOP_PROC_STATE_UID) +

(1L << GLIBTOP_PROC_STATE_GID);

static const unsigned long _glibtop_sysdeps_proc_state_new =

0;

/* Init function. */

void

_glibtop_init_proc_state_p (glibtop *server)

{

	server->sysdeps.proc_state = _glibtop_sysdeps_proc_state |

		_glibtop_sysdeps_proc_state_new;

}

/* Provides detailed information about a process. */

void

glibtop_get_proc_state_p (glibtop *server,

			  glibtop_proc_state *buf,

			  pid_t pid)

{

	struct kinfo_proc *pinfo;

	int count = 0;

	glibtop_init_p (server, (1L << GLIBTOP_SYSDEPS_PROC_STATE), 0);

	memset (buf, 0, sizeof (glibtop_proc_state));

	/* It does not work for the swapper task. */

	if (pid == 0) return;

	/* Get the process information */

	pinfo = kvm_getprocs (server->machine->kd, KERN_PROC_PID, pid,

			      sizeof (*pinfo), &count);

	if (pinfo == NULL) {

		glibtop_warn_io_r (server, "kvm_getprocs (%d)", pid);

		return;

	}

#define PROC_COMM	p_comm

#define PROC_SVUID	p_svuid

#define PROC_SVGID	p_svgid

#define PROC_STAT	p_stat

	g_strlcpy (buf->cmd, pinfo [0].PROC_COMM, sizeof buf->cmd);

	buf->uid = pinfo [0].PROC_SVUID;

	buf->gid = pinfo [0].PROC_SVGID;

	/* Set the flags for the data we're about to return*/

	buf->flags = _glibtop_sysdeps_proc_state |

		_glibtop_sysdeps_proc_state_new;

#if LIBGTOP_VERSION_CODE >= 1001000

	switch (pinfo [0].PROC_STAT) {

	case SIDL:

		buf->state = 0;

		break;

	case SRUN:

		buf->state = GLIBTOP_PROCESS_RUNNING;

		break;

#ifdef SSLEEP

	case SSLEEP:

		buf->state = GLIBTOP_PROCESS_INTERRUPTIBLE;

		break;

#endif

	case SSTOP:

		buf->state = GLIBTOP_PROCESS_STOPPED;

		break;

	case SZOMB:

		buf->state = GLIBTOP_PROCESS_ZOMBIE;

		break;

	default:

		return;

	}

#else

	switch (pinfo [0].PROC_STAT) {

	case SIDL:

		buf->state = 'D';

		break;

	case SRUN:

		buf->state = 'R';

		break;

#ifdef SSLEEP

	case SSLEEP:

		buf->state = 'S';

		break;

#endif

	case SSTOP:

		buf->state = 'T';

		break;

	case SZOMB:

		buf->state = 'Z';

		break;

	default:

		return;

	}

#endif

	buf->flags |= (1L << GLIBTOP_PROC_STATE_STATE);

}