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/*
* 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. 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
*
* From:
* $FreeBSD$
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/jail.h>
#include <sys/malloc.h>
#include <sys/proc.h>
#include <sys/resourcevar.h>
#include <sys/sbuf.h>
#include <sys/tty.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <vm/vm_param.h>
#include <fs/pseudofs/pseudofs.h>
#include <fs/procfs/procfs.h>
int
procfs_doprocstatus(PFS_FILL_ARGS)
{
struct session *sess;
struct tty *tp;
struct ucred *cr;
char *pc;
char *sep;
int pid, ppid, pgid, sid;
int i;
pid = p->p_pid;
PROC_LOCK(p);
ppid = p->p_pptr ? p->p_pptr->p_pid : 0;
PROC_UNLOCK(p);
pgid = p->p_pgrp->pg_id;
sess = p->p_pgrp->pg_session;
sid = sess->s_leader ? sess->s_leader->p_pid : 0;
/* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg
euid ruid rgid,egid,groups[1 .. NGROUPS]
*/
pc = p->p_comm;
do {
if (*pc < 33 || *pc > 126 || *pc == '\\')
sbuf_printf(sb, "\\%03o", *pc);
else
sbuf_putc(sb, *pc);
} while (*++pc);
sbuf_printf(sb, " %d %d %d %d ", pid, ppid, pgid, sid);
if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp))
sbuf_printf(sb, "%d,%d ", major(tp->t_dev), minor(tp->t_dev));
else
sbuf_printf(sb, "%d,%d ", -1, -1);
sep = "";
if (sess->s_ttyvp) {
sbuf_printf(sb, "%sctty", sep);
sep = ",";
}
if (SESS_LEADER(p)) {
sbuf_printf(sb, "%ssldr", sep);
sep = ",";
}
if (*sep != ',') {
sbuf_printf(sb, "noflags");
}
mtx_lock_spin(&sched_lock);
if (p->p_sflag & PS_INMEM) {
struct timeval ut, st;
calcru(p, &ut, &st, (struct timeval *) NULL);
mtx_unlock_spin(&sched_lock);
sbuf_printf(sb, " %lld,%ld %ld,%ld %ld,%ld",
(long long)p->p_stats->p_start.tv_sec,
p->p_stats->p_start.tv_usec,
ut.tv_sec, ut.tv_usec,
st.tv_sec, st.tv_usec);
} else {
mtx_unlock_spin(&sched_lock);
sbuf_printf(sb, " -1,-1 -1,-1 -1,-1");
}
if (p->p_flag & P_KSES) {
sbuf_printf(sb, " %s", "-kse- ");
} else {
sbuf_printf(sb, " %s",
(p->p_thread.td_wchan && p->p_thread.td_wmesg) ?
p->p_thread.td_wmesg : "nochan");
}
cr = p->p_ucred;
sbuf_printf(sb, " %lu %lu %lu",
(u_long)cr->cr_uid,
(u_long)cr->cr_ruid,
(u_long)cr->cr_rgid);
/* egid (cr->cr_svgid) is equal to cr_ngroups[0]
see also getegid(2) in /sys/kern/kern_prot.c */
for (i = 0; i < cr->cr_ngroups; i++) {
sbuf_printf(sb, ",%lu", (u_long)cr->cr_groups[i]);
}
if (jailed(p->p_ucred)) {
mtx_lock(&p->p_ucred->cr_prison->pr_mtx);
sbuf_printf(sb, " %s", p->p_ucred->cr_prison->pr_host);
mtx_unlock(&p->p_ucred->cr_prison->pr_mtx);
} else {
sbuf_printf(sb, " -");
}
sbuf_printf(sb, "\n");
return (0);
}
int
procfs_doproccmdline(PFS_FILL_ARGS)
{
struct ps_strings pstr;
int error, i;
/*
* If we are using the ps/cmdline caching, use that. Otherwise
* revert back to the old way which only implements full cmdline
* for the currept process and just p->p_comm for all other
* processes.
* Note that if the argv is no longer available, we deliberately
* don't fall back on p->p_comm or return an error: the authentic
* Linux behaviour is to return zero-length in this case.
*/
if (p->p_args && (ps_argsopen || !p_cansee(td->td_proc, p))) {
sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length);
} else if (p != td->td_proc) {
sbuf_printf(sb, "%.*s", MAXCOMLEN, p->p_comm);
} else {
error = copyin((void*)PS_STRINGS, &pstr, sizeof(pstr));
if (error)
return (error);
for (i = 0; i < pstr.ps_nargvstr; i++) {
sbuf_copyin(sb, pstr.ps_argvstr[i], 0);
sbuf_printf(sb, "%c", '\0');
}
}
return (0);
}
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