494 lines
13 KiB
C
494 lines
13 KiB
C
/*
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* Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: ipcs.c,v 1.8 1997/02/22 19:55:18 peter Exp $
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <paths.h>
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#include <nlist.h>
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#include <kvm.h>
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#include <err.h>
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/proc.h>
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#define KERNEL
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#include <sys/ipc.h>
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#include <sys/sem.h>
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#include <sys/shm.h>
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#include <sys/msg.h>
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struct semid_ds *sema;
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struct seminfo seminfo;
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struct msginfo msginfo;
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struct msqid_ds *msqids;
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struct shminfo shminfo;
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struct shmid_ds *shmsegs;
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int semconfig __P((int,...));
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void usage __P((void));
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static struct nlist symbols[] = {
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{"_sema"},
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#define X_SEMA 0
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{"_seminfo"},
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#define X_SEMINFO 1
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{"_semu"},
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#define X_SEMU 2
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{"_msginfo"},
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#define X_MSGINFO 3
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{"_msqids"},
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#define X_MSQIDS 4
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{"_shminfo"},
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#define X_SHMINFO 5
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{"_shmsegs"},
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#define X_SHMSEGS 6
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{NULL}
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};
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static kvm_t *kd;
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char *
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fmt_perm(mode)
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u_short mode;
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{
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static char buffer[100];
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buffer[0] = '-';
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buffer[1] = '-';
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buffer[2] = ((mode & 0400) ? 'r' : '-');
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buffer[3] = ((mode & 0200) ? 'w' : '-');
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buffer[4] = ((mode & 0100) ? 'a' : '-');
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buffer[5] = ((mode & 0040) ? 'r' : '-');
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buffer[6] = ((mode & 0020) ? 'w' : '-');
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buffer[7] = ((mode & 0010) ? 'a' : '-');
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buffer[8] = ((mode & 0004) ? 'r' : '-');
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buffer[9] = ((mode & 0002) ? 'w' : '-');
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buffer[10] = ((mode & 0001) ? 'a' : '-');
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buffer[11] = '\0';
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return (&buffer[0]);
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}
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void
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cvt_time(t, buf)
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time_t t;
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char *buf;
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{
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struct tm *tm;
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if (t == 0) {
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strcpy(buf, "no-entry");
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} else {
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tm = localtime(&t);
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sprintf(buf, "%2d:%02d:%02d",
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tm->tm_hour, tm->tm_min, tm->tm_sec);
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}
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}
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#define SHMINFO 1
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#define SHMTOTAL 2
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#define MSGINFO 4
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#define MSGTOTAL 8
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#define SEMINFO 16
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#define SEMTOTAL 32
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#define BIGGEST 1
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#define CREATOR 2
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#define OUTSTANDING 4
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#define PID 8
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#define TIME 16
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int
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main(argc, argv)
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int argc;
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char *argv[];
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{
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int display = SHMINFO | MSGINFO | SEMINFO;
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int option = 0;
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char *core = NULL, *namelist = NULL;
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int i;
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while ((i = getopt(argc, argv, "MmQqSsabC:cN:optT")) != -1)
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switch (i) {
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case 'M':
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display = SHMTOTAL;
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break;
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case 'm':
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display = SHMINFO;
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break;
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case 'Q':
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display = MSGTOTAL;
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break;
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case 'q':
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display = MSGINFO;
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break;
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case 'S':
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display = SEMTOTAL;
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break;
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case 's':
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display = SEMINFO;
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break;
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case 'T':
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display = SHMTOTAL | MSGTOTAL | SEMTOTAL;
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break;
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case 'a':
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option |= BIGGEST | CREATOR | OUTSTANDING | PID | TIME;
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break;
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case 'b':
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option |= BIGGEST;
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break;
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case 'C':
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core = optarg;
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break;
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case 'c':
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option |= CREATOR;
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break;
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case 'N':
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namelist = optarg;
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break;
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case 'o':
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option |= OUTSTANDING;
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break;
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case 'p':
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option |= PID;
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break;
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case 't':
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option |= TIME;
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break;
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default:
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usage();
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}
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/*
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* Discard setgid privileges if not the running kernel so that bad
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* guys can't print interesting stuff from kernel memory.
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*/
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if (namelist != NULL || core != NULL)
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setgid(getgid());
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if ((kd = kvm_open(namelist, core, NULL, O_RDONLY, "ipcs")) == NULL)
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exit(1);
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switch (kvm_nlist(kd, symbols)) {
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case 0:
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break;
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case -1:
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errx(1, "unable to read kernel symbol table.");
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default:
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#ifdef notdef /* they'll be told more civilly later */
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warnx("nlist failed");
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for (i = 0; symbols[i].n_name != NULL; i++)
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if (symbols[i].n_value == 0)
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warnx("symbol %s not found",
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symbols[i].n_name);
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break;
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#endif
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}
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if ((display & (MSGINFO | MSGTOTAL)) &&
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kvm_read(kd, symbols[X_MSGINFO].n_value, &msginfo, sizeof(msginfo))) {
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if (display & MSGTOTAL) {
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printf("msginfo:\n");
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printf("\tmsgmax: %6d\t(max characters in a message)\n",
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msginfo.msgmax);
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printf("\tmsgmni: %6d\t(# of message queues)\n",
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msginfo.msgmni);
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printf("\tmsgmnb: %6d\t(max characters in a message queue)\n",
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msginfo.msgmnb);
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printf("\tmsgtql: %6d\t(max # of messages in system)\n",
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msginfo.msgtql);
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printf("\tmsgssz: %6d\t(size of a message segment)\n",
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msginfo.msgssz);
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printf("\tmsgseg: %6d\t(# of message segments in system)\n\n",
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msginfo.msgseg);
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}
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if (display & MSGINFO) {
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struct msqid_ds *xmsqids;
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kvm_read(kd, symbols[X_MSQIDS].n_value, &msqids, sizeof(msqids));
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xmsqids = malloc(sizeof(struct msqid_ds) * msginfo.msgmni);
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kvm_read(kd, (u_long) msqids, xmsqids, sizeof(struct msqid_ds) * msginfo.msgmni);
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printf("Message Queues:\n");
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printf("T ID KEY MODE OWNER GROUP");
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if (option & CREATOR)
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printf(" CREATOR CGROUP");
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if (option & OUTSTANDING)
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printf(" CBYTES QNUM");
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if (option & BIGGEST)
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printf(" QBYTES");
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if (option & PID)
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printf(" LSPID LRPID");
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if (option & TIME)
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printf(" STIME RTIME CTIME");
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printf("\n");
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for (i = 0; i < msginfo.msgmni; i += 1) {
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if (xmsqids[i].msg_qbytes != 0) {
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char stime_buf[100], rtime_buf[100],
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ctime_buf[100];
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struct msqid_ds *msqptr = &xmsqids[i];
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cvt_time(msqptr->msg_stime, stime_buf);
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cvt_time(msqptr->msg_rtime, rtime_buf);
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cvt_time(msqptr->msg_ctime, ctime_buf);
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printf("q %6d %10d %s %8s %8s",
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IXSEQ_TO_IPCID(i, msqptr->msg_perm),
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msqptr->msg_perm.key,
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fmt_perm(msqptr->msg_perm.mode),
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user_from_uid(msqptr->msg_perm.uid, 0),
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group_from_gid(msqptr->msg_perm.gid, 0));
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if (option & CREATOR)
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printf(" %8s %8s",
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user_from_uid(msqptr->msg_perm.cuid, 0),
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group_from_gid(msqptr->msg_perm.cgid, 0));
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if (option & OUTSTANDING)
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printf(" %6d %6d",
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msqptr->msg_cbytes,
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msqptr->msg_qnum);
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if (option & BIGGEST)
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printf(" %6d",
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msqptr->msg_qbytes);
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if (option & PID)
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printf(" %6d %6d",
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msqptr->msg_lspid,
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msqptr->msg_lrpid);
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if (option & TIME)
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printf("%s %s %s",
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stime_buf,
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rtime_buf,
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ctime_buf);
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printf("\n");
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}
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}
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printf("\n");
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}
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} else
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if (display & (MSGINFO | MSGTOTAL)) {
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fprintf(stderr,
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"SVID messages facility not configured in the system\n");
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}
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if ((display & (SHMINFO | SHMTOTAL)) &&
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kvm_read(kd, symbols[X_SHMINFO].n_value, &shminfo, sizeof(shminfo))) {
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if (display & SHMTOTAL) {
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printf("shminfo:\n");
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printf("\tshmmax: %7d\t(max shared memory segment size)\n",
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shminfo.shmmax);
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printf("\tshmmin: %7d\t(min shared memory segment size)\n",
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shminfo.shmmin);
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printf("\tshmmni: %7d\t(max number of shared memory identifiers)\n",
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shminfo.shmmni);
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printf("\tshmseg: %7d\t(max shared memory segments per process)\n",
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shminfo.shmseg);
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printf("\tshmall: %7d\t(max amount of shared memory in pages)\n\n",
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shminfo.shmall);
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}
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if (display & SHMINFO) {
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struct shmid_ds *xshmids;
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kvm_read(kd, symbols[X_SHMSEGS].n_value, &shmsegs, sizeof(shmsegs));
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xshmids = malloc(sizeof(struct shmid_ds) * shminfo.shmmni);
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kvm_read(kd, (u_long) shmsegs, xshmids, sizeof(struct shmid_ds) *
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shminfo.shmmni);
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printf("Shared Memory:\n");
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printf("T ID KEY MODE OWNER GROUP");
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if (option & CREATOR)
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printf(" CREATOR CGROUP");
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if (option & OUTSTANDING)
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printf(" NATTCH");
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if (option & BIGGEST)
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printf(" SEGSZ");
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if (option & PID)
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printf(" CPID LPID");
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if (option & TIME)
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printf(" ATIME DTIME CTIME");
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printf("\n");
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for (i = 0; i < shminfo.shmmni; i += 1) {
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if (xshmids[i].shm_perm.mode & 0x0800) {
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char atime_buf[100], dtime_buf[100],
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ctime_buf[100];
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struct shmid_ds *shmptr = &xshmids[i];
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cvt_time(shmptr->shm_atime, atime_buf);
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cvt_time(shmptr->shm_dtime, dtime_buf);
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cvt_time(shmptr->shm_ctime, ctime_buf);
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printf("m %6d %10d %s %8s %8s",
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IXSEQ_TO_IPCID(i, shmptr->shm_perm),
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shmptr->shm_perm.key,
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fmt_perm(shmptr->shm_perm.mode),
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user_from_uid(shmptr->shm_perm.uid, 0),
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group_from_gid(shmptr->shm_perm.gid, 0));
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if (option & CREATOR)
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printf(" %8s %8s",
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user_from_uid(shmptr->shm_perm.cuid, 0),
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group_from_gid(shmptr->shm_perm.cgid, 0));
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if (option & OUTSTANDING)
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printf(" %6d",
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shmptr->shm_nattch);
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if (option & BIGGEST)
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printf(" %6d",
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shmptr->shm_segsz);
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if (option & PID)
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printf(" %6d %6d",
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shmptr->shm_cpid,
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shmptr->shm_lpid);
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if (option & TIME)
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printf("%s %s %s",
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atime_buf,
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dtime_buf,
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ctime_buf);
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printf("\n");
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}
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}
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printf("\n");
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}
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} else
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if (display & (SHMINFO | SHMTOTAL)) {
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fprintf(stderr,
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"SVID shared memory facility not configured in the system\n");
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}
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if ((display & (SEMINFO | SEMTOTAL)) &&
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kvm_read(kd, symbols[X_SEMINFO].n_value, &seminfo, sizeof(seminfo))) {
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struct semid_ds *xsema;
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if (display & SEMTOTAL) {
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printf("seminfo:\n");
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printf("\tsemmap: %6d\t(# of entries in semaphore map)\n",
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seminfo.semmap);
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printf("\tsemmni: %6d\t(# of semaphore identifiers)\n",
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seminfo.semmni);
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printf("\tsemmns: %6d\t(# of semaphores in system)\n",
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seminfo.semmns);
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printf("\tsemmnu: %6d\t(# of undo structures in system)\n",
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seminfo.semmnu);
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printf("\tsemmsl: %6d\t(max # of semaphores per id)\n",
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seminfo.semmsl);
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printf("\tsemopm: %6d\t(max # of operations per semop call)\n",
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seminfo.semopm);
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printf("\tsemume: %6d\t(max # of undo entries per process)\n",
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seminfo.semume);
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printf("\tsemusz: %6d\t(size in bytes of undo structure)\n",
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seminfo.semusz);
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printf("\tsemvmx: %6d\t(semaphore maximum value)\n",
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seminfo.semvmx);
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printf("\tsemaem: %6d\t(adjust on exit max value)\n\n",
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seminfo.semaem);
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}
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if (display & SEMINFO) {
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if (semconfig(SEM_CONFIG_FREEZE) != 0) {
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perror("semconfig");
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fprintf(stderr,
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"Can't lock semaphore facility - winging it...\n");
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}
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kvm_read(kd, symbols[X_SEMA].n_value, &sema, sizeof(sema));
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xsema = malloc(sizeof(struct semid_ds) * seminfo.semmni);
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kvm_read(kd, (u_long) sema, xsema, sizeof(struct semid_ds) * seminfo.semmni);
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printf("Semaphores:\n");
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printf("T ID KEY MODE OWNER GROUP");
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if (option & CREATOR)
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printf(" CREATOR CGROUP");
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if (option & BIGGEST)
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printf(" NSEMS");
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if (option & TIME)
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printf(" OTIME CTIME");
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printf("\n");
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for (i = 0; i < seminfo.semmni; i += 1) {
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if ((xsema[i].sem_perm.mode & SEM_ALLOC) != 0) {
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char ctime_buf[100], otime_buf[100];
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struct semid_ds *semaptr = &xsema[i];
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int j, value;
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union semun junk;
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cvt_time(semaptr->sem_otime, otime_buf);
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cvt_time(semaptr->sem_ctime, ctime_buf);
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printf("s %6d %10d %s %8s %8s",
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IXSEQ_TO_IPCID(i, semaptr->sem_perm),
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semaptr->sem_perm.key,
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fmt_perm(semaptr->sem_perm.mode),
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user_from_uid(semaptr->sem_perm.uid, 0),
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group_from_gid(semaptr->sem_perm.gid, 0));
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if (option & CREATOR)
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printf(" %8s %8s",
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user_from_uid(semaptr->sem_perm.cuid, 0),
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group_from_gid(semaptr->sem_perm.cgid, 0));
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if (option & BIGGEST)
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printf(" %6d",
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semaptr->sem_nsems);
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if (option & TIME)
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printf("%s %s",
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otime_buf,
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ctime_buf);
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printf("\n");
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}
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}
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(void) semconfig(SEM_CONFIG_THAW);
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printf("\n");
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}
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} else
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if (display & (SEMINFO | SEMTOTAL)) {
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fprintf(stderr, "SVID semaphores facility not configured in the system\n");
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}
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kvm_close(kd);
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exit(0);
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}
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void
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usage()
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{
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fprintf(stderr,
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"usage: ipcs [-abcmopqst] [-C corefile] [-N namelist]\n");
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exit(1);
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}
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