diff options
Diffstat (limited to 'sys/fs/procfs/procfs_status.c')
| -rw-r--r-- | sys/fs/procfs/procfs_status.c | 201 |
1 files changed, 201 insertions, 0 deletions
diff --git a/sys/fs/procfs/procfs_status.c b/sys/fs/procfs/procfs_status.c new file mode 100644 index 000000000000..e4e7e51ac02a --- /dev/null +++ b/sys/fs/procfs/procfs_status.c @@ -0,0 +1,201 @@ +/*- + * SPDX-License-Identifier: BSD-3-Clause + * + * 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 + * + * From: + * $Id: procfs_status.c,v 3.1 1993/12/15 09:40:17 jsp Exp $ + * $FreeBSD$ + */ + +#include <sys/param.h> +#include <sys/kernel.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/mutex.h> +#include <sys/sx.h> +#include <sys/proc.h> +#include <sys/resourcevar.h> +#include <sys/sbuf.h> +#include <sys/sysent.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 thread *tdfirst; + struct tty *tp; + struct ucred *cr; + const char *wmesg; + char *pc; + char *sep; + struct timeval boottime; + int pid, ppid, pgid, sid; + int i; + + pid = p->p_pid; + PROC_LOCK(p); + ppid = p->p_pptr ? p->p_pptr->p_pid : 0; + pgid = p->p_pgrp->pg_id; + sess = p->p_pgrp->pg_session; + SESS_LOCK(sess); + sid = sess->s_leader ? sess->s_leader->p_pid : 0; + +/* comm pid ppid pgid sid tty 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, "%s ", devtoname(tp->t_dev)); + else + sbuf_printf(sb, "- "); + + sep = ""; + if (sess->s_ttyvp) { + sbuf_printf(sb, "%sctty", sep); + sep = ","; + } + if (SESS_LEADER(p)) { + sbuf_printf(sb, "%ssldr", sep); + sep = ","; + } + SESS_UNLOCK(sess); + if (*sep != ',') { + sbuf_printf(sb, "noflags"); + } + + tdfirst = FIRST_THREAD_IN_PROC(p); + thread_lock(tdfirst); + if (tdfirst->td_wchan != NULL) { + KASSERT(tdfirst->td_wmesg != NULL, + ("wchan %p has no wmesg", tdfirst->td_wchan)); + wmesg = tdfirst->td_wmesg; + } else + wmesg = "nochan"; + thread_unlock(tdfirst); + + if (p->p_flag & P_INMEM) { + struct timeval start, ut, st; + + PROC_STATLOCK(p); + calcru(p, &ut, &st); + PROC_STATUNLOCK(p); + start = p->p_stats->p_start; + getboottime(&boottime); + timevaladd(&start, &boottime); + sbuf_printf(sb, " %jd,%ld %jd,%ld %jd,%ld", + (intmax_t)start.tv_sec, start.tv_usec, + (intmax_t)ut.tv_sec, ut.tv_usec, + (intmax_t)st.tv_sec, st.tv_usec); + } else + sbuf_printf(sb, " -1,-1 -1,-1 -1,-1"); + + sbuf_printf(sb, " %s", wmesg); + + 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(cr)) { + mtx_lock(&cr->cr_prison->pr_mtx); + sbuf_printf(sb, " %s", + prison_name(td->td_ucred->cr_prison, cr->cr_prison)); + mtx_unlock(&cr->cr_prison->pr_mtx); + } else { + sbuf_printf(sb, " -"); + } + PROC_UNLOCK(p); + sbuf_printf(sb, "\n"); + + return (0); +} + +int +procfs_doproccmdline(PFS_FILL_ARGS) +{ + + /* + * If we are using the ps/cmdline caching, use that. Otherwise + * read argv from the process space. + * 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. + */ + + PROC_LOCK(p); + if (p->p_args && p_cansee(td, p) == 0) { + sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); + PROC_UNLOCK(p); + return (0); + } + + if ((p->p_flag & P_SYSTEM) != 0) { + PROC_UNLOCK(p); + return (0); + } + + PROC_UNLOCK(p); + + return (proc_getargv(td, p, sb)); +} |