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/sysent.h> 57 #include <sys/tty.h> 58 59 #include <vm/vm.h> 60 #include <vm/pmap.h> 61 #include <vm/vm_param.h> 62 63 #include <fs/pseudofs/pseudofs.h> 64 #include <fs/procfs/procfs.h> 65 66 int 67 procfs_doprocstatus(PFS_FILL_ARGS) 68 { 69 struct session *sess; 70 struct thread *tdfirst; 71 struct tty *tp; 72 struct ucred *cr; 73 char *pc; 74 char *sep; 75 int pid, ppid, pgid, sid; 76 int i; 77 78 pid = p->p_pid; 79 PROC_LOCK(p); 80 ppid = p->p_pptr ? p->p_pptr->p_pid : 0; 81 pgid = p->p_pgrp->pg_id; 82 sess = p->p_pgrp->pg_session; 83 SESS_LOCK(sess); 84 sid = sess->s_leader ? sess->s_leader->p_pid : 0; 85 86 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg 87 euid ruid rgid,egid,groups[1 .. NGROUPS] 88 */ 89 90 pc = p->p_comm; 91 do { 92 if (*pc < 33 || *pc > 126 || *pc == '\\') 93 sbuf_printf(sb, "\\%03o", *pc); 94 else 95 sbuf_putc(sb, *pc); 96 } while (*++pc); 97 sbuf_printf(sb, " %d %d %d %d ", pid, ppid, pgid, sid); 98 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 99 sbuf_printf(sb, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 100 else 101 sbuf_printf(sb, "%d,%d ", -1, -1); 102 103 sep = ""; 104 if (sess->s_ttyvp) { 105 sbuf_printf(sb, "%sctty", sep); 106 sep = ","; 107 } 108 if (SESS_LEADER(p)) { 109 sbuf_printf(sb, "%ssldr", sep); 110 sep = ","; 111 } 112 SESS_UNLOCK(sess); 113 if (*sep != ',') { 114 sbuf_printf(sb, "noflags"); 115 } 116 117 mtx_lock_spin(&sched_lock); 118 if (p->p_sflag & PS_INMEM) { 119 struct timeval ut, st; 120 121 calcru(p, &ut, &st, (struct timeval *) NULL); 122 mtx_unlock_spin(&sched_lock); 123 sbuf_printf(sb, " %lld,%ld %ld,%ld %ld,%ld", 124 (long long)p->p_stats->p_start.tv_sec, 125 p->p_stats->p_start.tv_usec, 126 ut.tv_sec, ut.tv_usec, 127 st.tv_sec, st.tv_usec); 128 } else { 129 mtx_unlock_spin(&sched_lock); 130 sbuf_printf(sb, " -1,-1 -1,-1 -1,-1"); 131 } 132 133 if (p->p_flag & P_THREADED) 134 sbuf_printf(sb, " %s", "-kse- "); 135 else { 136 tdfirst = FIRST_THREAD_IN_PROC(p); /* XXX diff from td? */ 137 sbuf_printf(sb, " %s", 138 (tdfirst->td_wchan && tdfirst->td_wmesg) ? 139 tdfirst->td_wmesg : "nochan"); 140 } 141 142 cr = p->p_ucred; 143 144 sbuf_printf(sb, " %lu %lu %lu", 145 (u_long)cr->cr_uid, 146 (u_long)cr->cr_ruid, 147 (u_long)cr->cr_rgid); 148 149 /* egid (cr->cr_svgid) is equal to cr_ngroups[0] 150 see also getegid(2) in /sys/kern/kern_prot.c */ 151 152 for (i = 0; i < cr->cr_ngroups; i++) { 153 sbuf_printf(sb, ",%lu", (u_long)cr->cr_groups[i]); 154 } 155 156 if (jailed(p->p_ucred)) { 157 mtx_lock(&p->p_ucred->cr_prison->pr_mtx); 158 sbuf_printf(sb, " %s", p->p_ucred->cr_prison->pr_host); 159 mtx_unlock(&p->p_ucred->cr_prison->pr_mtx); 160 } else { 161 sbuf_printf(sb, " -"); 162 } 163 PROC_UNLOCK(p); 164 sbuf_printf(sb, "\n"); 165 166 return (0); 167 } 168 169 int 170 procfs_doproccmdline(PFS_FILL_ARGS) 171 { 172 struct ps_strings pstr; 173 int error, i; 174 175 /* 176 * If we are using the ps/cmdline caching, use that. Otherwise 177 * revert back to the old way which only implements full cmdline 178 * for the currept process and just p->p_comm for all other 179 * processes. 180 * Note that if the argv is no longer available, we deliberately 181 * don't fall back on p->p_comm or return an error: the authentic 182 * Linux behaviour is to return zero-length in this case. 183 */ 184 185 PROC_LOCK(p); 186 if (p->p_args && (ps_argsopen || !p_cansee(td, p))) { 187 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 188 PROC_UNLOCK(p); 189 return (0); 190 } 191 PROC_UNLOCK(p); 192 if (p != td->td_proc) { 193 sbuf_printf(sb, "%.*s", MAXCOMLEN, p->p_comm); 194 } else { 195 error = copyin((void *)p->p_sysent->sv_psstrings, &pstr, 196 sizeof(pstr)); 197 if (error) 198 return (error); 199 for (i = 0; i < pstr.ps_nargvstr; i++) { 200 sbuf_copyin(sb, pstr.ps_argvstr[i], 0); 201 sbuf_printf(sb, "%c", '\0'); 202 } 203 } 204 205 return (0); 206 } 207