| 1 | /* $NetBSD: procfs_status.c,v 1.37 2016/11/14 08:55:51 kre Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 1993 |
| 5 | * The Regents of the University of California. All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to Berkeley by |
| 8 | * Jan-Simon Pendry. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * 3. Neither the name of the University nor the names of its contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 32 | * SUCH DAMAGE. |
| 33 | * |
| 34 | * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 |
| 35 | */ |
| 36 | |
| 37 | /* |
| 38 | * Copyright (c) 1993 Jan-Simon Pendry |
| 39 | * |
| 40 | * This code is derived from software contributed to Berkeley by |
| 41 | * Jan-Simon Pendry. |
| 42 | * |
| 43 | * Redistribution and use in source and binary forms, with or without |
| 44 | * modification, are permitted provided that the following conditions |
| 45 | * are met: |
| 46 | * 1. Redistributions of source code must retain the above copyright |
| 47 | * notice, this list of conditions and the following disclaimer. |
| 48 | * 2. Redistributions in binary form must reproduce the above copyright |
| 49 | * notice, this list of conditions and the following disclaimer in the |
| 50 | * documentation and/or other materials provided with the distribution. |
| 51 | * 3. All advertising materials mentioning features or use of this software |
| 52 | * must display the following acknowledgement: |
| 53 | * This product includes software developed by the University of |
| 54 | * California, Berkeley and its contributors. |
| 55 | * 4. Neither the name of the University nor the names of its contributors |
| 56 | * may be used to endorse or promote products derived from this software |
| 57 | * without specific prior written permission. |
| 58 | * |
| 59 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 60 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 61 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 62 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 63 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 64 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 65 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 66 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 67 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 68 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 69 | * SUCH DAMAGE. |
| 70 | * |
| 71 | * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 |
| 72 | */ |
| 73 | |
| 74 | #include <sys/cdefs.h> |
| 75 | __KERNEL_RCSID(0, "$NetBSD: procfs_status.c,v 1.37 2016/11/14 08:55:51 kre Exp $" ); |
| 76 | |
| 77 | #include <sys/param.h> |
| 78 | #include <sys/systm.h> |
| 79 | #include <sys/time.h> |
| 80 | #include <sys/kernel.h> |
| 81 | #include <sys/proc.h> |
| 82 | #include <sys/vnode.h> |
| 83 | #include <sys/ioctl.h> |
| 84 | #include <sys/tty.h> |
| 85 | #include <sys/resource.h> |
| 86 | #include <sys/resourcevar.h> |
| 87 | #include <sys/kauth.h> |
| 88 | |
| 89 | #include <miscfs/procfs/procfs.h> |
| 90 | |
| 91 | int |
| 92 | procfs_dostatus( |
| 93 | struct lwp *curl, |
| 94 | struct lwp *l, |
| 95 | struct pfsnode *pfs, |
| 96 | struct uio *uio |
| 97 | ) |
| 98 | { |
| 99 | struct session *sess; |
| 100 | struct tty *tp; |
| 101 | kauth_cred_t cr; |
| 102 | struct proc *p = l->l_proc; |
| 103 | char *ps; |
| 104 | const char *sep; |
| 105 | int pid, ppid, pgid, sid; |
| 106 | u_int i; |
| 107 | char psbuf[256+MAXHOSTNAMELEN]; /* XXX - conservative */ |
| 108 | uint16_t ngroups; |
| 109 | |
| 110 | if (uio->uio_rw != UIO_READ) |
| 111 | return (EOPNOTSUPP); |
| 112 | |
| 113 | mutex_enter(proc_lock); |
| 114 | mutex_enter(p->p_lock); |
| 115 | |
| 116 | pid = p->p_pid; |
| 117 | ppid = p->p_ppid; |
| 118 | pgid = p->p_pgrp->pg_id; |
| 119 | sess = p->p_pgrp->pg_session; |
| 120 | sid = sess->s_sid; |
| 121 | |
| 122 | /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid gid groups ... */ |
| 123 | |
| 124 | ps = psbuf; |
| 125 | memcpy(ps, p->p_comm, MAXCOMLEN); |
| 126 | ps[MAXCOMLEN] = '\0'; |
| 127 | ps += strlen(ps); |
| 128 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d %d %d %d " , |
| 129 | pid, ppid, pgid, sid); |
| 130 | |
| 131 | if ((p->p_lflag & PL_CONTROLT) && (tp = sess->s_ttyp)) |
| 132 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%llu,%llu " , |
| 133 | (unsigned long long)major(tp->t_dev), |
| 134 | (unsigned long long)minor(tp->t_dev)); |
| 135 | else |
| 136 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d " , |
| 137 | -1, -1); |
| 138 | |
| 139 | sep = "" ; |
| 140 | if (sess->s_ttyvp) { |
| 141 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty" , sep); |
| 142 | sep = "," ; |
| 143 | } |
| 144 | if (SESS_LEADER(p)) { |
| 145 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr" , sep); |
| 146 | sep = "," ; |
| 147 | } |
| 148 | if (*sep != ',') |
| 149 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags" ); |
| 150 | |
| 151 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %lld,%ld" , |
| 152 | (long long)p->p_stats->p_start.tv_sec, |
| 153 | (long)p->p_stats->p_start.tv_usec); |
| 154 | |
| 155 | { |
| 156 | struct timeval ut, st; |
| 157 | |
| 158 | calcru(p, &ut, &st, (void *) 0, NULL); |
| 159 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), |
| 160 | " %lld,%ld %lld,%ld" , (long long)ut.tv_sec, |
| 161 | (long)ut.tv_usec, (long long)st.tv_sec, (long)st.tv_usec); |
| 162 | } |
| 163 | |
| 164 | lwp_lock(l); |
| 165 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s" , |
| 166 | (l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan" ); |
| 167 | lwp_unlock(l); |
| 168 | |
| 169 | cr = p->p_cred; |
| 170 | |
| 171 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d" , |
| 172 | kauth_cred_geteuid(cr)); |
| 173 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d" , |
| 174 | kauth_cred_getegid(cr)); |
| 175 | ngroups = kauth_cred_ngroups(cr); |
| 176 | for (i = 0; i < ngroups; i++) |
| 177 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d" , |
| 178 | kauth_cred_group(cr, i)); |
| 179 | ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n" ); |
| 180 | |
| 181 | mutex_exit(p->p_lock); |
| 182 | mutex_exit(proc_lock); |
| 183 | |
| 184 | return (uiomove_frombuf(psbuf, ps - psbuf, uio)); |
| 185 | } |
| 186 | |