1 /* 2 * Copyright (c) 1993 Jan-Simon Pendry 3 * Copyright (c) 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * This code is derived from software contributed to Berkeley by 7 * Jan-Simon Pendry. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 38 * 39 * From: 40 * $Id: procfs_status.c,v 3.1 1993/12/15 09:40:17 jsp Exp $ 41 * $FreeBSD$ 42 */ 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/exec.h> 47 #include <sys/lock.h> 48 #include <sys/mutex.h> 49 #include <sys/jail.h> 50 #include <sys/malloc.h> 51 #include <sys/mutex.h> 52 #include <sys/sx.h> 53 #include <sys/proc.h> 54 #include <sys/resourcevar.h> 55 #include <sys/sbuf.h> 56 #include <sys/tty.h> 57 58 #include <vm/vm.h> 59 #include <vm/pmap.h> 60 #include <vm/vm_param.h> 61 62 #include <fs/pseudofs/pseudofs.h> 63 #include <fs/procfs/procfs.h> 64 65 int 66 procfs_doprocstatus(PFS_FILL_ARGS) 67 { 68 struct session *sess; 69 struct thread *tdfirst; 70 struct tty *tp; 71 struct ucred *cr; 72 char *pc; 73 char *sep; 74 int pid, ppid, pgid, sid; 75 int i; 76 77 pid = p->p_pid; 78 PROC_LOCK(p); 79 ppid = p->p_pptr ? p->p_pptr->p_pid : 0; 80 pgid = p->p_pgrp->pg_id; 81 sess = p->p_pgrp->pg_session; 82 SESS_LOCK(sess); 83 sid = sess->s_leader ? sess->s_leader->p_pid : 0; 84 85 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg 86 euid ruid rgid,egid,groups[1 .. NGROUPS] 87 */ 88 89 pc = p->p_comm; 90 do { 91 if (*pc < 33 || *pc > 126 || *pc == '\\') 92 sbuf_printf(sb, "\\%03o", *pc); 93 else 94 sbuf_putc(sb, *pc); 95 } while (*++pc); 96 sbuf_printf(sb, " %d %d %d %d ", pid, ppid, pgid, sid); 97 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 98 sbuf_printf(sb, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 99 else 100 sbuf_printf(sb, "%d,%d ", -1, -1); 101 102 sep = ""; 103 if (sess->s_ttyvp) { 104 sbuf_printf(sb, "%sctty", sep); 105 sep = ","; 106 } 107 if (SESS_LEADER(p)) { 108 sbuf_printf(sb, "%ssldr", sep); 109 sep = ","; 110 } 111 SESS_UNLOCK(sess); 112 if (*sep != ',') { 113 sbuf_printf(sb, "noflags"); 114 } 115 116 mtx_lock_spin(&sched_lock); 117 if (p->p_sflag & PS_INMEM) { 118 struct timeval ut, st; 119 120 calcru(p, &ut, &st, (struct timeval *) NULL); 121 mtx_unlock_spin(&sched_lock); 122 sbuf_printf(sb, " %lld,%ld %ld,%ld %ld,%ld", 123 (long long)p->p_stats->p_start.tv_sec, 124 p->p_stats->p_start.tv_usec, 125 ut.tv_sec, ut.tv_usec, 126 st.tv_sec, st.tv_usec); 127 } else { 128 mtx_unlock_spin(&sched_lock); 129 sbuf_printf(sb, " -1,-1 -1,-1 -1,-1"); 130 } 131 132 if (p->p_flag & P_KSES) 133 sbuf_printf(sb, " %s", "-kse- "); 134 else { 135 tdfirst = FIRST_THREAD_IN_PROC(p); /* XXX diff from td? */ 136 sbuf_printf(sb, " %s", 137 (tdfirst->td_wchan && tdfirst->td_wmesg) ? 138 tdfirst->td_wmesg : "nochan"); 139 } 140 141 cr = p->p_ucred; 142 143 sbuf_printf(sb, " %lu %lu %lu", 144 (u_long)cr->cr_uid, 145 (u_long)cr->cr_ruid, 146 (u_long)cr->cr_rgid); 147 148 /* egid (cr->cr_svgid) is equal to cr_ngroups[0] 149 see also getegid(2) in /sys/kern/kern_prot.c */ 150 151 for (i = 0; i < cr->cr_ngroups; i++) { 152 sbuf_printf(sb, ",%lu", (u_long)cr->cr_groups[i]); 153 } 154 155 if (jailed(p->p_ucred)) { 156 mtx_lock(&p->p_ucred->cr_prison->pr_mtx); 157 sbuf_printf(sb, " %s", p->p_ucred->cr_prison->pr_host); 158 mtx_unlock(&p->p_ucred->cr_prison->pr_mtx); 159 } else { 160 sbuf_printf(sb, " -"); 161 } 162 PROC_UNLOCK(p); 163 sbuf_printf(sb, "\n"); 164 165 return (0); 166 } 167 168 int 169 procfs_doproccmdline(PFS_FILL_ARGS) 170 { 171 struct ps_strings pstr; 172 int error, i; 173 174 /* 175 * If we are using the ps/cmdline caching, use that. Otherwise 176 * revert back to the old way which only implements full cmdline 177 * for the currept process and just p->p_comm for all other 178 * processes. 179 * Note that if the argv is no longer available, we deliberately 180 * don't fall back on p->p_comm or return an error: the authentic 181 * Linux behaviour is to return zero-length in this case. 182 */ 183 184 PROC_LOCK(p); 185 if (p->p_args && (ps_argsopen || !p_cansee(td, p))) { 186 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 187 PROC_UNLOCK(p); 188 return (0); 189 } 190 PROC_UNLOCK(p); 191 if (p != td->td_proc) { 192 sbuf_printf(sb, "%.*s", MAXCOMLEN, p->p_comm); 193 } else { 194 error = copyin((void*)PS_STRINGS, &pstr, sizeof(pstr)); 195 if (error) 196 return (error); 197 for (i = 0; i < pstr.ps_nargvstr; i++) { 198 sbuf_copyin(sb, pstr.ps_argvstr[i], 0); 199 sbuf_printf(sb, "%c", '\0'); 200 } 201 } 202 203 return (0); 204 } 205