NetBSD/sys/miscfs/procfs/procfs_status.c

186 lines
6.5 KiB
C

/* $NetBSD: procfs_status.c,v 1.36 2009/10/21 21:12:06 rmind Exp $ */
/*
* 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
*/
/*
* Copyright (c) 1993 Jan-Simon Pendry
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.36 2009/10/21 21:12:06 rmind Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/time.h>
#include <sys/kernel.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 <sys/kauth.h>
#include <miscfs/procfs/procfs.h>
int
procfs_dostatus(
struct lwp *curl,
struct lwp *l,
struct pfsnode *pfs,
struct uio *uio
)
{
struct session *sess;
struct tty *tp;
kauth_cred_t cr;
struct proc *p = l->l_proc;
char *ps;
const char *sep;
int pid, ppid, pgid, sid;
u_int i;
char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */
uint16_t ngroups;
if (uio->uio_rw != UIO_READ)
return (EOPNOTSUPP);
mutex_enter(proc_lock);
mutex_enter(p->p_lock);
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_sid;
/* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */
ps = psbuf;
memcpy(ps, p->p_comm, MAXCOMLEN);
ps[MAXCOMLEN] = '\0';
ps += strlen(ps);
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d ",
pid, ppid, pgid, sid);
if ((p->p_lflag & PL_CONTROLT) && (tp = sess->s_ttyp))
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%llu,%llu ",
(unsigned long long)major(tp->t_dev),
(unsigned long long)minor(tp->t_dev));
else
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ",
-1, -1);
sep = "";
if (sess->s_ttyvp) {
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty", sep);
sep = ",";
}
if (SESS_LEADER(p)) {
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr", sep);
sep = ",";
}
if (*sep != ',')
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags");
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %lld,%ld",
(long long)p->p_stats->p_start.tv_sec,
(long)p->p_stats->p_start.tv_usec);
{
struct timeval ut, st;
calcru(p, &ut, &st, (void *) 0, NULL);
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
" %lld,%ld %lld,%ld", (long long)ut.tv_sec,
(long)ut.tv_usec, (long long)st.tv_sec, (long)st.tv_usec);
}
lwp_lock(l);
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s",
(l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan");
lwp_unlock(l);
cr = p->p_cred;
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
kauth_cred_geteuid(cr));
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
kauth_cred_getegid(cr));
ngroups = kauth_cred_ngroups(cr);
for (i = 0; i < ngroups; i++)
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d",
kauth_cred_group(cr, i));
ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n");
mutex_exit(p->p_lock);
mutex_exit(proc_lock);
return (uiomove_frombuf(psbuf, ps - psbuf, uio));
}