procfs_status.c revision 1.33
1 /* $NetBSD: procfs_status.c,v 1.33 2008/04/24 15:35:30 ad 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 1.33 2008/04/24 15:35:30 ad 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_mutex); 115 116 pid = p->p_pid; 117 ppid = p->p_pptr ? p->p_pptr->p_pid : 0, 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), "%d,%d ", 133 major(tp->t_dev), minor(tp->t_dev)); 134 else 135 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%d,%d ", 136 -1, -1); 137 138 sep = ""; 139 if (sess->s_ttyvp) { 140 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%sctty", sep); 141 sep = ","; 142 } 143 if (SESS_LEADER(p)) { 144 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "%ssldr", sep); 145 sep = ","; 146 } 147 if (*sep != ',') 148 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "noflags"); 149 150 mutex_enter(&p->p_smutex); 151 if (l->l_flag & LW_INMEM) 152 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %ld,%ld", 153 p->p_stats->p_start.tv_sec, p->p_stats->p_start.tv_usec); 154 else 155 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " -1,-1"); 156 157 { 158 struct timeval ut, st; 159 160 calcru(p, &ut, &st, (void *) 0, NULL); 161 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), 162 " %ld,%ld %ld,%ld", ut.tv_sec, ut.tv_usec, st.tv_sec, 163 st.tv_usec); 164 } 165 mutex_exit(&p->p_smutex); 166 167 lwp_lock(l); 168 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %s", 169 (l->l_wchan && l->l_wmesg) ? l->l_wmesg : "nochan"); 170 lwp_unlock(l); 171 172 cr = p->p_cred; 173 174 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d", 175 kauth_cred_geteuid(cr)); 176 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), " %d", 177 kauth_cred_getegid(cr)); 178 ngroups = kauth_cred_ngroups(cr); 179 for (i = 0; i < ngroups; i++) 180 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), ",%d", 181 kauth_cred_group(cr, i)); 182 ps += snprintf(ps, sizeof(psbuf) - (ps - psbuf), "\n"); 183 184 mutex_exit(&p->p_mutex); 185 mutex_exit(proc_lock); 186 187 return (uiomove_frombuf(psbuf, ps - psbuf, uio)); 188 } 189
Indexes created Tue Sep 23 01:09:51 GMT 2025