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/* $OpenBSD: procfs_status.c,v 1.6 2003/06/02 23:28:11 millert Exp $ */
/* $NetBSD: procfs_status.c,v 1.11 1996/03/16 23:52:50 christos Exp $ */
/*
* Copyright (c) 1993 Jan-Simon Pendry
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Jan-Simon Pendry.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/ioctl.h>
#include <sys/tty.h>
#include <sys/resource.h>
#include <sys/resourcevar.h>
#include <miscfs/procfs/procfs.h>
int procfs_stat_gen(struct proc *, char *s, int);
#define COUNTORCAT(s, l, ps, n) do { \
if (s) \
strlcat(s, ps, l); \
else \
n += strlen(ps); \
} while (0)
/* Generates:
* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups
*/
int
procfs_stat_gen(p, s, l)
struct proc *p;
char *s;
int l;
{
struct session *sess;
struct tty *tp;
struct ucred *cr;
int pid, ppid, pgid, sid;
struct timeval ut, st;
char ps[256], *sep;
int i, n;
pid = p->p_pid;
ppid = p->p_pptr ? p->p_pptr->p_pid : 0;
pgid = p->p_pgrp->pg_id;
sess = p->p_pgrp->pg_session;
sid = sess->s_leader ? sess->s_leader->p_pid : 0;
n = 0;
if (s)
bzero(s, l);
bcopy(p->p_comm, ps, MAXCOMLEN-1);
ps[MAXCOMLEN] = '\0';
COUNTORCAT(s, l, ps, n);
(void) snprintf(ps, sizeof(ps), " %d %d %d %d ",
pid, ppid, pgid, sid);
COUNTORCAT(s, l, ps, n);
if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp))
snprintf(ps, sizeof(ps), "%d,%d ",
major(tp->t_dev), minor(tp->t_dev));
else
snprintf(ps, sizeof(ps), "%d,%d ",
-1, -1);
COUNTORCAT(s, l, ps, n);
sep = "";
if (sess->s_ttyvp) {
snprintf(ps, sizeof(ps), "%sctty", sep);
sep = ",";
}
COUNTORCAT(s, l, ps, n);
if (SESS_LEADER(p)) {
snprintf(ps, sizeof(ps), "%ssldr", sep);
sep = ",";
}
COUNTORCAT(s, l, ps, n);
if (*sep != ',')
snprintf(ps, sizeof(ps), "noflags");
COUNTORCAT(s, l, ps, n);
if (p->p_flag & P_INMEM)
snprintf(ps, sizeof(ps), " %ld,%ld",
p->p_stats->p_start.tv_sec, p->p_stats->p_start.tv_usec);
else
snprintf(ps, sizeof(ps), " -1,-1");
COUNTORCAT(s, l, ps, n);
calcru(p, &ut, &st, (void *) 0);
snprintf(ps, sizeof(ps), " %ld,%ld %ld,%ld",
ut.tv_sec, ut.tv_usec, st.tv_sec, st.tv_usec);
COUNTORCAT(s, l, ps, n);
snprintf(ps, sizeof(ps), " %s",
(p->p_wchan && p->p_wmesg) ? p->p_wmesg : "nochan");
COUNTORCAT(s, l, ps, n);
cr = p->p_ucred;
snprintf(ps, sizeof(ps), " %u, %u", cr->cr_uid, cr->cr_gid);
COUNTORCAT(s, l, ps, n);
for (i = 0; i < cr->cr_ngroups; i++) {
snprintf(ps, sizeof(ps), ",%u", cr->cr_groups[i]);
COUNTORCAT(s, l, ps, n);
}
snprintf(ps, sizeof(ps), "\n");
COUNTORCAT(s, l, ps, n);
return (s != NULL ? strlen(s) + 1 : n + 1);
}
int
procfs_dostatus(curp, p, pfs, uio)
struct proc *curp;
struct proc *p;
struct pfsnode *pfs;
struct uio *uio;
{
char *ps;
int error, len;
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
len = procfs_stat_gen(p, NULL, 0);
ps = malloc(len, M_TEMP, M_WAITOK);
(void) procfs_stat_gen(p, ps, len);
len -= uio->uio_offset;
len = imin(len, uio->uio_resid);
if (len <= 0)
error = 0;
else
error = uiomove(ps + uio->uio_offset, len, uio);
free(ps, M_TEMP);
return (error);
}
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