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 1.9 1997/03/24 11:24:42 bde Exp $ 41 */ 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/proc.h> 46 #include <sys/vnode.h> 47 #include <sys/tty.h> 48 #include <sys/resourcevar.h> 49 #include <miscfs/procfs/procfs.h> 50 51 int 52 procfs_dostatus(curp, p, pfs, uio) 53 struct proc *curp; 54 struct proc *p; 55 struct pfsnode *pfs; 56 struct uio *uio; 57 { 58 struct session *sess; 59 struct tty *tp; 60 struct ucred *cr; 61 char *ps; 62 char *sep; 63 int pid, ppid, pgid, sid; 64 int i; 65 int xlen; 66 int error; 67 char psbuf[256]; /* XXX - conservative */ 68 69 if (uio->uio_rw != UIO_READ) 70 return (EOPNOTSUPP); 71 72 pid = p->p_pid; 73 ppid = p->p_pptr ? p->p_pptr->p_pid : 0, 74 pgid = p->p_pgrp->pg_id; 75 sess = p->p_pgrp->pg_session; 76 sid = sess->s_leader ? sess->s_leader->p_pid : 0; 77 78 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg 79 euid ruid rgid,egid,groups[1 .. NGROUPS] 80 */ 81 ps = psbuf; 82 bcopy(p->p_comm, ps, MAXCOMLEN); 83 ps[MAXCOMLEN] = '\0'; 84 ps += strlen(ps); 85 ps += sprintf(ps, " %d %d %d %d ", pid, ppid, pgid, sid); 86 87 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 88 ps += sprintf(ps, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 89 else 90 ps += sprintf(ps, "%d,%d ", -1, -1); 91 92 sep = ""; 93 if (sess->s_ttyvp) { 94 ps += sprintf(ps, "%sctty", sep); 95 sep = ","; 96 } 97 if (SESS_LEADER(p)) { 98 ps += sprintf(ps, "%ssldr", sep); 99 sep = ","; 100 } 101 if (*sep != ',') 102 ps += sprintf(ps, "noflags"); 103 104 if (p->p_flag & P_INMEM) 105 ps += sprintf(ps, " %ld,%ld", 106 p->p_stats->p_start.tv_sec, 107 p->p_stats->p_start.tv_usec); 108 else 109 ps += sprintf(ps, " -1,-1"); 110 111 { 112 struct timeval ut, st; 113 114 calcru(p, &ut, &st, (void *) 0); 115 ps += sprintf(ps, " %ld,%ld %ld,%ld", 116 ut.tv_sec, 117 ut.tv_usec, 118 st.tv_sec, 119 st.tv_usec); 120 } 121 122 ps += sprintf(ps, " %s", 123 (p->p_wchan && p->p_wmesg) ? p->p_wmesg : "nochan"); 124 125 cr = p->p_ucred; 126 127 ps += sprintf(ps, " %ld %ld %ld", 128 cr->cr_uid, /* euid */ 129 p->p_cred->p_ruid, /* ruid */ 130 p->p_cred->p_rgid); /* rgid */ 131 132 /* egid (p->p_cred->p_svgid) is equal to cr_ngroups[0] 133 see also getegid(2) in /sys/kern/kern_prot.c */ 134 135 for (i = 0; i < cr->cr_ngroups; i++) 136 ps += sprintf(ps, ",%ld", cr->cr_groups[i]); 137 ps += sprintf(ps, "\n"); 138 139 xlen = ps - psbuf; 140 xlen -= uio->uio_offset; 141 ps = psbuf + uio->uio_offset; 142 xlen = imin(xlen, uio->uio_resid); 143 if (xlen <= 0) 144 error = 0; 145 else 146 error = uiomove(ps, xlen, uio); 147 148 return (error); 149 } 150