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 * from: @(#)procfs_status.c 8.4 (Berkeley) 6/15/94 38 * $Id: procfs_status.c,v 1.8 1994/06/15 22:59:10 mycroft Exp $ 39 */ 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/time.h> 44 #include <sys/kernel.h> 45 #include <sys/proc.h> 46 #include <sys/vnode.h> 47 #include <sys/ioctl.h> 48 #include <sys/tty.h> 49 #include <sys/resource.h> 50 #include <sys/resourcevar.h> 51 #include <miscfs/procfs/procfs.h> 52 53 int 54 procfs_dostatus(curp, p, pfs, uio) 55 struct proc *curp; 56 struct proc *p; 57 struct pfsnode *pfs; 58 struct uio *uio; 59 { 60 struct session *sess; 61 struct tty *tp; 62 struct ucred *cr; 63 char *ps; 64 char *sep; 65 int pid, ppid, pgid, sid; 66 int i; 67 int xlen; 68 int error; 69 char psbuf[256]; /* XXX - conservative */ 70 71 if (uio->uio_rw != UIO_READ) 72 return (EOPNOTSUPP); 73 74 pid = p->p_pid; 75 ppid = p->p_pptr ? p->p_pptr->p_pid : 0, 76 pgid = p->p_pgrp->pg_id; 77 sess = p->p_pgrp->pg_session; 78 sid = sess->s_leader ? sess->s_leader->p_pid : 0; 79 80 /* comm pid ppid pgid sid maj,min ctty,sldr start ut st wmsg uid groups ... */ 81 82 ps = psbuf; 83 bcopy(p->p_comm, ps, MAXCOMLEN); 84 ps[MAXCOMLEN] = '\0'; 85 ps += strlen(ps); 86 ps += sprintf(ps, " %d %d %d %d ", pid, ppid, pgid, sid); 87 88 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 89 ps += sprintf(ps, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 90 else 91 ps += sprintf(ps, "%d,%d ", -1, -1); 92 93 sep = ""; 94 if (sess->s_ttyvp) { 95 ps += sprintf(ps, "%sctty", sep); 96 sep = ","; 97 } 98 if (SESS_LEADER(p)) { 99 ps += sprintf(ps, "%ssldr", sep); 100 sep = ","; 101 } 102 if (*sep != ',') 103 ps += sprintf(ps, "noflags"); 104 105 if (p->p_flag & P_INMEM) 106 ps += sprintf(ps, " %d,%d", 107 p->p_stats->p_start.tv_sec, 108 p->p_stats->p_start.tv_usec); 109 else 110 ps += sprintf(ps, " -1,-1"); 111 112 { 113 struct timeval ut, st; 114 115 calcru(p, &ut, &st, (void *) 0); 116 ps += sprintf(ps, " %d,%d %d,%d", 117 ut.tv_sec, 118 ut.tv_usec, 119 st.tv_sec, 120 st.tv_usec); 121 } 122 123 ps += sprintf(ps, " %s", 124 (p->p_wchan && p->p_wmesg) ? p->p_wmesg : "nochan"); 125 126 cr = p->p_ucred; 127 128 ps += sprintf(ps, " %d", cr->cr_uid); 129 for (i = 0; i < cr->cr_ngroups; i++) 130 ps += sprintf(ps, ",%d", cr->cr_groups[i]); 131 ps += sprintf(ps, "\n"); 132 133 xlen = ps - psbuf; 134 xlen -= uio->uio_offset; 135 ps = psbuf + uio->uio_offset; 136 xlen = imin(xlen, uio->uio_resid); 137 if (xlen <= 0) 138 error = 0; 139 else 140 error = uiomove(ps, xlen, uio); 141 142 return (error); 143 } 144