procfs_status.c revision 1.6
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: Id: procfs_status.c,v 3.1 1993/12/15 09:40:17 jsp Exp 38 * from: @(#)procfs_status.c 8.3 (Berkeley) 2/17/94 39 * $Id: procfs_status.c,v 1.6 1994/06/08 11:33:39 mycroft Exp $ 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/time.h> 45 #include <sys/kernel.h> 46 #include <sys/proc.h> 47 #include <sys/vnode.h> 48 #include <sys/ioctl.h> 49 #include <sys/tty.h> 50 #include <sys/resource.h> 51 #include <sys/resourcevar.h> 52 #include <miscfs/procfs/procfs.h> 53 54 int 55 procfs_dostatus(curp, p, pfs, uio) 56 struct proc *curp; 57 struct proc *p; 58 struct pfsnode *pfs; 59 struct uio *uio; 60 { 61 struct session *sess; 62 struct tty *tp; 63 struct ucred *cr; 64 char *ps; 65 char *sep; 66 int pid, ppid, pgid, sid; 67 int i; 68 int xlen; 69 int error; 70 char psbuf[256]; /* XXX - conservative */ 71 72 if (uio->uio_rw != UIO_READ) 73 return (EOPNOTSUPP); 74 75 pid = p->p_pid; 76 ppid = p->p_pptr ? p->p_pptr->p_pid : 0, 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 uid groups ... */ 82 83 ps = psbuf; 84 bcopy(p->p_comm, ps, MAXCOMLEN); 85 ps[MAXCOMLEN] = '\0'; 86 ps += strlen(ps); 87 ps += sprintf(ps, " %d %d %d %d ", pid, ppid, pgid, sid); 88 89 if ((p->p_flag&P_CONTROLT) && (tp = sess->s_ttyp)) 90 ps += sprintf(ps, "%d,%d ", major(tp->t_dev), minor(tp->t_dev)); 91 else 92 ps += sprintf(ps, "%d,%d ", -1, -1); 93 94 sep = ""; 95 if (sess->s_ttyvp) { 96 ps += sprintf(ps, "%sctty", sep); 97 sep = ","; 98 } 99 if (SESS_LEADER(p)) { 100 ps += sprintf(ps, "%ssldr", sep); 101 sep = ","; 102 } 103 if (*sep != ',') 104 ps += sprintf(ps, "noflags"); 105 106 if (p->p_flag & P_INMEM) 107 ps += sprintf(ps, " %d,%d", 108 p->p_stats->p_start.tv_sec, 109 p->p_stats->p_start.tv_usec); 110 else 111 ps += sprintf(ps, " -1,-1"); 112 113 { 114 struct timeval ut, st; 115 116 calcru(p, &ut, &st, (void *) 0); 117 ps += sprintf(ps, " %d,%d %d,%d", 118 ut.tv_sec, 119 ut.tv_usec, 120 st.tv_sec, 121 st.tv_usec); 122 } 123 124 ps += sprintf(ps, " %s", 125 (p->p_wchan && p->p_wmesg) ? p->p_wmesg : "nochan"); 126 127 cr = p->p_ucred; 128 129 ps += sprintf(ps, " %d", cr->cr_uid, cr->cr_gid); 130 for (i = 1; i < cr->cr_ngroups; i++) 131 ps += sprintf(ps, ",%d", cr->cr_groups[i]); 132 ps += sprintf(ps, "\n"); 133 134 xlen = ps - psbuf; 135 xlen -= uio->uio_offset; 136 ps = psbuf + uio->uio_offset; 137 xlen = imin(xlen, uio->uio_resid); 138 if (xlen <= 0) 139 error = 0; 140 else 141 error = uiomove(ps, xlen, uio); 142 143 return (error); 144 } 145
Indexes created Tue Sep 23 13:09:54 GMT 2025