262 lines
9.1 KiB
C
262 lines
9.1 KiB
C
/* $NetBSD: procfs_status.c,v 1.40 2020/05/23 23:42:43 ad Exp $ */
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/*
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* Copyright (c) 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
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*/
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/*
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* Copyright (c) 1993 Jan-Simon Pendry
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*
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* This code is derived from software contributed to Berkeley by
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* Jan-Simon Pendry.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)procfs_status.c 8.4 (Berkeley) 6/15/94
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.40 2020/05/23 23:42:43 ad Exp $");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/time.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/vnode.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/resource.h>
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#include <sys/resourcevar.h>
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#include <sys/kauth.h>
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#include <miscfs/procfs/procfs.h>
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static int
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procfs_status_netbsd(struct lwp *l, struct uio *uio)
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{
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struct session *sess;
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struct tty *tp;
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kauth_cred_t cr;
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struct proc *p = l->l_proc;
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char *ps;
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const char *sep;
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const char *emulname = curlwp->l_proc->p_emul->e_name;
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int pid, ppid, pgid, sid;
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u_int i;
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char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */
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uint16_t ngroups;
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mutex_enter(&proc_lock);
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mutex_enter(p->p_lock);
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pid = p->p_pid;
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ppid = p->p_ppid;
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pgid = p->p_pgrp->pg_id;
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sess = p->p_pgrp->pg_session;
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sid = sess->s_sid;
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ps = psbuf;
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if (strncmp(emulname, "linux", 5) == 0) {
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ps += snprintf(ps, sizeof(psbuf), "Name:\t%s\n", p->p_comm);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Pid:\t%d\n", pid);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "PPid:\t%d\n", ppid);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "TracerPid:\t%d\n", 0);
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cr = p->p_cred;
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ngroups = kauth_cred_ngroups(cr);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Groups:\t");
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for (i = 0; i < ngroups; i++)
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d ",
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kauth_cred_group(cr, i));
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n");
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmPeak:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmSize:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmRSS:\t%8ju kB\n", (intmax_t)p->p_rlimit[RLIMIT_RSS].rlim_cur / 1024);
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} else {
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/* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */
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memcpy(ps, p->p_comm, MAXCOMLEN);
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ps[MAXCOMLEN] = '\0';
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ps += strlen(ps);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d ",
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pid, ppid, pgid, sid);
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if ((p->p_lflag & PL_CONTROLT) && (tp = sess->s_ttyp))
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%llu,%llu ",
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(unsigned long long)major(tp->t_dev),
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(unsigned long long)minor(tp->t_dev));
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else
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ",
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-1, -1);
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sep = "";
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if (sess->s_ttyvp) {
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty", sep);
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sep = ",";
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}
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if (SESS_LEADER(p)) {
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr", sep);
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sep = ",";
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}
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if (*sep != ',')
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags");
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %lld,%ld",
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(long long)p->p_stats->p_start.tv_sec,
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(long)p->p_stats->p_start.tv_usec);
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{
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struct timeval ut, st;
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calcru(p, &ut, &st, (void *) 0, NULL);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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" %lld,%ld %lld,%ld", (long long)ut.tv_sec,
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(long)ut.tv_usec, (long long)st.tv_sec, (long)st.tv_usec);
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}
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lwp_lock(l);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s",
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(l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan");
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lwp_unlock(l);
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cr = p->p_cred;
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
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kauth_cred_geteuid(cr));
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d",
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kauth_cred_getegid(cr));
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ngroups = kauth_cred_ngroups(cr);
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for (i = 0; i < ngroups; i++)
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d",
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kauth_cred_group(cr, i));
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n");
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}
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mutex_exit(p->p_lock);
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mutex_exit(&proc_lock);
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return (uiomove_frombuf(psbuf, ps - psbuf, uio));
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}
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static int
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procfs_status_linux(struct lwp *l, struct uio *uio)
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{
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kauth_cred_t cr;
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struct proc *p = l->l_proc;
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char *ps;
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int pid, ppid;
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u_int i;
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char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */
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uint16_t ngroups;
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mutex_enter(&proc_lock);
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mutex_enter(p->p_lock);
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pid = p->p_pid;
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ppid = p->p_ppid;
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ps = psbuf;
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ps += snprintf(ps, sizeof(psbuf), "Name:\t%s\n", p->p_comm);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Pid:\t%d\n", pid);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "PPid:\t%d\n", ppid);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "TracerPid:\t%d\n", 0);
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cr = p->p_cred;
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ngroups = kauth_cred_ngroups(cr);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "Groups:\t");
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for (i = 0; i < ngroups; i++)
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d ",
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kauth_cred_group(cr, i));
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n");
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmPeak:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmSize:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_DATA].rlim_cur / 1024);
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ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf),
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"VmRSS:\t%8" PRIu64 " kB\n", p->p_rlimit[RLIMIT_RSS].rlim_cur / 1024);
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mutex_exit(p->p_lock);
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mutex_exit(&proc_lock);
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return (uiomove_frombuf(psbuf, ps - psbuf, uio));
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}
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int
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procfs_dostatus(struct lwp *curl, struct lwp *l, struct pfsnode *pfs,
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struct uio *uio)
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{
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const char *emulname = curlwp->l_proc->p_emul->e_name;
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if (uio->uio_rw != UIO_READ)
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return (EOPNOTSUPP);
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if (strncmp(emulname, "linux", 5) == 0) {
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return procfs_status_linux(l, uio);
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} else {
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return procfs_status_netbsd(l, uio);
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}
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}
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