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 * $FreeBSD$ 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/exec.h> 46 #include <sys/lock.h> 47 #include <sys/mutex.h> 48 #include <sys/jail.h> 49 #include <sys/malloc.h> 50 #include <sys/proc.h> 51 #include <sys/resourcevar.h> 52 #include <sys/sbuf.h> 53 #include <sys/tty.h> 54 55 #include <vm/vm.h> 56 #include <vm/pmap.h> 57 #include <vm/vm_param.h> 58 59 #include <fs/pseudofs/pseudofs.h> 60 #include <fs/procfs/procfs.h> 61 62 int 63 procfs_doprocstatus(PFS_FILL_ARGS) 64 { 65 struct session *sess; 66 struct tty *tp; 67 struct ucred *cr; 68 char *pc; 69 char *sep; 70 int pid, ppid, pgid, sid; 71 int i; 72 73 pid = p->p_pid; 74 PROC_LOCK(p); 75 ppid = p->p_pptr ? p->p_pptr->p_pid : 0; 76 PROC_UNLOCK(p); 77 pgid = p->p_pgrp->pg_id; 78 sess = p->p_pgrp->pg_session; 79 sid = sess->s_leader ? sess->s_leader->p_pid : 0; 80 81 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg 82 euid ruid rgid,egid,groups[1 .. NGROUPS] 83 */ 84 85 pc = p->p_comm; 86 do { 87 if (*pc < 33 || *pc > 126 || *pc == '\\') 88 sbuf_printf(sb, "\\%03o", *pc); 89 else 90 sbuf_putc(sb, *pc); 91 } while (*++pc); 92 sbuf_printf(sb, " %d %d %d %d ", pid, ppid, pgid, sid); 93 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 94 sbuf_printf(sb, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 95 else 96 sbuf_printf(sb, "%d,%d ", -1, -1); 97 98 sep = ""; 99 if (sess->s_ttyvp) { 100 sbuf_printf(sb, "%sctty", sep); 101 sep = ","; 102 } 103 if (SESS_LEADER(p)) { 104 sbuf_printf(sb, "%ssldr", sep); 105 sep = ","; 106 } 107 if (*sep != ',') { 108 sbuf_printf(sb, "noflags"); 109 } 110 111 mtx_lock_spin(&sched_lock); 112 if (p->p_sflag & PS_INMEM) { 113 struct timeval ut, st; 114 115 calcru(p, &ut, &st, (struct timeval *) NULL); 116 mtx_unlock_spin(&sched_lock); 117 sbuf_printf(sb, " %lld,%ld %ld,%ld %ld,%ld", 118 (long long)p->p_stats->p_start.tv_sec, 119 p->p_stats->p_start.tv_usec, 120 ut.tv_sec, ut.tv_usec, 121 st.tv_sec, st.tv_usec); 122 } else { 123 mtx_unlock_spin(&sched_lock); 124 sbuf_printf(sb, " -1,-1 -1,-1 -1,-1"); 125 } 126 127 if (p->p_flag & P_KSES) { 128 sbuf_printf(sb, " %s", "-kse- "); 129 } else { 130 sbuf_printf(sb, " %s", 131 (p->p_thread.td_wchan && p->p_thread.td_wmesg) ? 132 p->p_thread.td_wmesg : "nochan"); 133 } 134 135 cr = p->p_ucred; 136 137 sbuf_printf(sb, " %lu %lu %lu", 138 (u_long)cr->cr_uid, 139 (u_long)cr->cr_ruid, 140 (u_long)cr->cr_rgid); 141 142 /* egid (cr->cr_svgid) is equal to cr_ngroups[0] 143 see also getegid(2) in /sys/kern/kern_prot.c */ 144 145 for (i = 0; i < cr->cr_ngroups; i++) { 146 sbuf_printf(sb, ",%lu", (u_long)cr->cr_groups[i]); 147 } 148 149 if (jailed(p->p_ucred)) { 150 mtx_lock(&p->p_ucred->cr_prison->pr_mtx); 151 sbuf_printf(sb, " %s", p->p_ucred->cr_prison->pr_host); 152 mtx_unlock(&p->p_ucred->cr_prison->pr_mtx); 153 } else { 154 sbuf_printf(sb, " -"); 155 } 156 sbuf_printf(sb, "\n"); 157 158 return (0); 159 } 160 161 int 162 procfs_doproccmdline(PFS_FILL_ARGS) 163 { 164 struct ps_strings pstr; 165 int error, i; 166 167 /* 168 * If we are using the ps/cmdline caching, use that. Otherwise 169 * revert back to the old way which only implements full cmdline 170 * for the currept process and just p->p_comm for all other 171 * processes. 172 * Note that if the argv is no longer available, we deliberately 173 * don't fall back on p->p_comm or return an error: the authentic 174 * Linux behaviour is to return zero-length in this case. 175 */ 176 177 if (p->p_args && (ps_argsopen || !p_cansee(td->td_proc, p))) { 178 sbuf_bcpy(sb, p->p_args->ar_args, p->p_args->ar_length); 179 } else if (p != td->td_proc) { 180 sbuf_printf(sb, "%.*s", MAXCOMLEN, p->p_comm); 181 } else { 182 error = copyin((void*)PS_STRINGS, &pstr, sizeof(pstr)); 183 if (error) 184 return (error); 185 for (i = 0; i < pstr.ps_nargvstr; i++) { 186 sbuf_copyin(sb, pstr.ps_argvstr[i], 0); 187 sbuf_printf(sb, "%c", '\0'); 188 } 189 } 190 191 return (0); 192 } 193