683 lines
18 KiB
C
683 lines
18 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <err.h>
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#include <fcntl.h>
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#include <grp.h>
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#include <kvm.h>
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#include <nlist.h>
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#include <limits.h>
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#include <paths.h>
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#include <pwd.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.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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#include <sys/sysctl.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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/* SysCtlGatherStruct structure. */
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struct scgs_vector {
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const char *sysctl;
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off_t offset;
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size_t size;
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};
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int use_sysctl = 1;
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struct semid_kernel *sema;
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struct seminfo seminfo;
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struct msginfo msginfo;
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struct msqid_kernel *msqids;
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struct shminfo shminfo;
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struct shmid_kernel *shmsegs;
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char *fmt_perm(u_short);
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void cvt_time(time_t, char *);
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void sysctlgatherstruct(void *addr, size_t size, struct scgs_vector *vec);
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void kget(int idx, void *addr, size_t size);
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void usage(void);
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uid_t user2uid(char *username);
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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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{"msginfo"},
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#define X_MSGINFO 2
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{"msqids"},
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#define X_MSQIDS 3
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{"shminfo"},
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#define X_SHMINFO 4
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{"shmsegs"},
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#define X_SHMSEGS 5
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{NULL}
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};
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#define SHMINFO_XVEC \
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X(shmmax, sizeof(u_long)) \
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X(shmmin, sizeof(u_long)) \
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X(shmmni, sizeof(u_long)) \
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X(shmseg, sizeof(u_long)) \
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X(shmall, sizeof(u_long))
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#define SEMINFO_XVEC \
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X(semmap, sizeof(int)) \
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X(semmni, sizeof(int)) \
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X(semmns, sizeof(int)) \
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X(semmnu, sizeof(int)) \
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X(semmsl, sizeof(int)) \
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X(semopm, sizeof(int)) \
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X(semume, sizeof(int)) \
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X(semusz, sizeof(int)) \
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X(semvmx, sizeof(int)) \
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X(semaem, sizeof(int))
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#define MSGINFO_XVEC \
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X(msgmax, sizeof(int)) \
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X(msgmni, sizeof(int)) \
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X(msgmnb, sizeof(int)) \
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X(msgtql, sizeof(int)) \
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X(msgssz, sizeof(int)) \
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X(msgseg, sizeof(int))
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#define X(a, b) { "kern.ipc." #a, offsetof(TYPEC, a), (b) },
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#define TYPEC struct shminfo
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struct scgs_vector shminfo_scgsv[] = { SHMINFO_XVEC { NULL } };
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#undef TYPEC
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#define TYPEC struct seminfo
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struct scgs_vector seminfo_scgsv[] = { SEMINFO_XVEC { NULL } };
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#undef TYPEC
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#define TYPEC struct msginfo
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struct scgs_vector msginfo_scgsv[] = { MSGINFO_XVEC { NULL } };
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#undef TYPEC
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#undef X
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static kvm_t *kd;
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char *
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fmt_perm(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(time_t t, 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(int argc, 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, *user = NULL, *namelist = NULL;
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char kvmoferr[_POSIX2_LINE_MAX]; /* Error buf for kvm_openfiles. */
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int i;
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uid_t uid;
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while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTu:y")) != -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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case 'y':
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use_sysctl = 0;
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break;
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case 'u':
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user = optarg;
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uid = user2uid(user);
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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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* If paths to the exec file or core file were specified, we
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* aren't operating on the running kernel, so we can't use
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* sysctl.
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*/
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if (namelist != NULL || core != NULL)
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use_sysctl = 0;
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if (!use_sysctl) {
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kd = kvm_openfiles(namelist, core, NULL, O_RDONLY, kvmoferr);
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if (kd == NULL)
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errx(1, "kvm_openfiles: %s", kvmoferr);
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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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#endif
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break;
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}
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}
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kget(X_MSGINFO, &msginfo, sizeof(msginfo));
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if ((display & (MSGINFO | MSGTOTAL))) {
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if (display & MSGTOTAL) {
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printf("msginfo:\n");
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printf("\tmsgmax: %12d\t(max characters in a message)\n",
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msginfo.msgmax);
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printf("\tmsgmni: %12d\t(# of message queues)\n",
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msginfo.msgmni);
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printf("\tmsgmnb: %12d\t(max characters in a message queue)\n",
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msginfo.msgmnb);
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printf("\tmsgtql: %12d\t(max # of messages in system)\n",
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msginfo.msgtql);
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printf("\tmsgssz: %12d\t(size of a message segment)\n",
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msginfo.msgssz);
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printf("\tmsgseg: %12d\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_kernel *kxmsqids;
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size_t kxmsqids_len;
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kxmsqids_len = sizeof(struct msqid_kernel) * msginfo.msgmni;
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kxmsqids = malloc(kxmsqids_len);
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kget(X_MSQIDS, kxmsqids, kxmsqids_len);
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printf("Message Queues:\n");
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printf("T %12s %12s %-11s %-8s %-8s", "ID", "KEY", "MODE",
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"OWNER", "GROUP");
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if (option & CREATOR)
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printf(" %-8s %-8s", "CREATOR", "CGROUP");
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if (option & OUTSTANDING)
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printf(" %20s %20s", "CBYTES", "QNUM");
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if (option & BIGGEST)
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printf(" %20s", "QBYTES");
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if (option & PID)
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printf(" %12s %12s", "LSPID", "LRPID");
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if (option & TIME)
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printf(" %-8s %-8s %-8s", "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 (kxmsqids[i].u.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_kernel *kmsqptr = &kxmsqids[i];
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if (user)
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if (uid != kmsqptr->u.msg_perm.uid)
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continue;
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cvt_time(kmsqptr->u.msg_stime, stime_buf);
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cvt_time(kmsqptr->u.msg_rtime, rtime_buf);
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cvt_time(kmsqptr->u.msg_ctime, ctime_buf);
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printf("q %12d %12d %s %8s %8s",
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IXSEQ_TO_IPCID(i, kmsqptr->u.msg_perm),
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(int)kmsqptr->u.msg_perm.key,
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fmt_perm(kmsqptr->u.msg_perm.mode),
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user_from_uid(kmsqptr->u.msg_perm.uid, 0),
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group_from_gid(kmsqptr->u.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(kmsqptr->u.msg_perm.cuid, 0),
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group_from_gid(kmsqptr->u.msg_perm.cgid, 0));
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if (option & OUTSTANDING)
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printf(" %12lu %12lu",
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kmsqptr->u.msg_cbytes,
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kmsqptr->u.msg_qnum);
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if (option & BIGGEST)
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printf(" %20lu",
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kmsqptr->u.msg_qbytes);
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if (option & PID)
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printf(" %12d %12d",
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kmsqptr->u.msg_lspid,
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kmsqptr->u.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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kget(X_SHMINFO, &shminfo, sizeof(shminfo));
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if ((display & (SHMINFO | SHMTOTAL))) {
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if (display & SHMTOTAL) {
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printf("shminfo:\n");
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printf("\tshmmax: %12d\t(max shared memory segment size)\n",
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shminfo.shmmax);
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printf("\tshmmin: %12d\t(min shared memory segment size)\n",
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shminfo.shmmin);
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printf("\tshmmni: %12d\t(max number of shared memory identifiers)\n",
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shminfo.shmmni);
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printf("\tshmseg: %12d\t(max shared memory segments per process)\n",
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shminfo.shmseg);
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printf("\tshmall: %12d\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_kernel *kxshmids;
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size_t kxshmids_len;
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kxshmids_len = sizeof(struct shmid_kernel) * shminfo.shmmni;
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kxshmids = malloc(kxshmids_len);
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kget(X_SHMSEGS, kxshmids, kxshmids_len);
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printf("Shared Memory:\n");
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printf("T %12s %12s %-11s %-8s %-8s", "ID", "KEY", "MODE",
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"OWNER", "GROUP");
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if (option & CREATOR)
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printf(" %-8s %-8s", "CREATOR", "CGROUP");
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if (option & OUTSTANDING)
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printf(" %12s", "NATTCH");
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if (option & BIGGEST)
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printf(" %12s", "SEGSZ");
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if (option & PID)
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printf(" %12s %12s", "CPID", "LPID");
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if (option & TIME)
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printf(" %-8s %-8s %-8s", "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 (kxshmids[i].u.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_kernel *kshmptr = &kxshmids[i];
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if (user)
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if (uid != kshmptr->u.shm_perm.uid)
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continue;
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cvt_time(kshmptr->u.shm_atime, atime_buf);
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cvt_time(kshmptr->u.shm_dtime, dtime_buf);
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cvt_time(kshmptr->u.shm_ctime, ctime_buf);
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printf("m %12d %12d %s %8s %8s",
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IXSEQ_TO_IPCID(i, kshmptr->u.shm_perm),
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(int)kshmptr->u.shm_perm.key,
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fmt_perm(kshmptr->u.shm_perm.mode),
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user_from_uid(kshmptr->u.shm_perm.uid, 0),
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group_from_gid(kshmptr->u.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(kshmptr->u.shm_perm.cuid, 0),
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group_from_gid(kshmptr->u.shm_perm.cgid, 0));
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if (option & OUTSTANDING)
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printf(" %12d",
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kshmptr->u.shm_nattch);
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if (option & BIGGEST)
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printf(" %12d",
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kshmptr->u.shm_segsz);
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if (option & PID)
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printf(" %12d %12d",
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kshmptr->u.shm_cpid,
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kshmptr->u.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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kget(X_SEMINFO, &seminfo, sizeof(seminfo));
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if ((display & (SEMINFO | SEMTOTAL))) {
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struct semid_kernel *kxsema;
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size_t kxsema_len;
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if (display & SEMTOTAL) {
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printf("seminfo:\n");
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printf("\tsemmap: %12d\t(# of entries in semaphore map)\n",
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seminfo.semmap);
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printf("\tsemmni: %12d\t(# of semaphore identifiers)\n",
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seminfo.semmni);
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printf("\tsemmns: %12d\t(# of semaphores in system)\n",
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seminfo.semmns);
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printf("\tsemmnu: %12d\t(# of undo structures in system)\n",
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seminfo.semmnu);
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printf("\tsemmsl: %12d\t(max # of semaphores per id)\n",
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seminfo.semmsl);
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printf("\tsemopm: %12d\t(max # of operations per semop call)\n",
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seminfo.semopm);
|
|
printf("\tsemume: %12d\t(max # of undo entries per process)\n",
|
|
seminfo.semume);
|
|
printf("\tsemusz: %12d\t(size in bytes of undo structure)\n",
|
|
seminfo.semusz);
|
|
printf("\tsemvmx: %12d\t(semaphore maximum value)\n",
|
|
seminfo.semvmx);
|
|
printf("\tsemaem: %12d\t(adjust on exit max value)\n\n",
|
|
seminfo.semaem);
|
|
}
|
|
if (display & SEMINFO) {
|
|
kxsema_len = sizeof(struct semid_kernel) * seminfo.semmni;
|
|
kxsema = malloc(kxsema_len);
|
|
kget(X_SEMA, kxsema, kxsema_len);
|
|
|
|
printf("Semaphores:\n");
|
|
printf("T %12s %12s %-11s %-8s %-8s", "ID", "KEY", "MODE",
|
|
"OWNER", "GROUP");
|
|
if (option & CREATOR)
|
|
printf(" %-8s %-8s", "CREATOR", "CGROUP");
|
|
if (option & BIGGEST)
|
|
printf(" %12s", "NSEMS");
|
|
if (option & TIME)
|
|
printf(" %-8s %-8s", "OTIME", "CTIME");
|
|
printf("\n");
|
|
for (i = 0; i < seminfo.semmni; i += 1) {
|
|
if ((kxsema[i].u.sem_perm.mode & SEM_ALLOC) != 0) {
|
|
char ctime_buf[100], otime_buf[100];
|
|
struct semid_kernel *ksemaptr = &kxsema[i];
|
|
|
|
if (user)
|
|
if (uid != ksemaptr->u.sem_perm.uid)
|
|
continue;
|
|
cvt_time(ksemaptr->u.sem_otime, otime_buf);
|
|
cvt_time(ksemaptr->u.sem_ctime, ctime_buf);
|
|
|
|
printf("s %12d %12d %s %8s %8s",
|
|
IXSEQ_TO_IPCID(i, ksemaptr->u.sem_perm),
|
|
(int)ksemaptr->u.sem_perm.key,
|
|
fmt_perm(ksemaptr->u.sem_perm.mode),
|
|
user_from_uid(ksemaptr->u.sem_perm.uid, 0),
|
|
group_from_gid(ksemaptr->u.sem_perm.gid, 0));
|
|
|
|
if (option & CREATOR)
|
|
printf(" %8s %8s",
|
|
user_from_uid(ksemaptr->u.sem_perm.cuid, 0),
|
|
group_from_gid(ksemaptr->u.sem_perm.cgid, 0));
|
|
|
|
if (option & BIGGEST)
|
|
printf(" %12d",
|
|
ksemaptr->u.sem_nsems);
|
|
|
|
if (option & TIME)
|
|
printf(" %s %s",
|
|
otime_buf,
|
|
ctime_buf);
|
|
|
|
printf("\n");
|
|
}
|
|
}
|
|
|
|
printf("\n");
|
|
}
|
|
} else
|
|
if (display & (SEMINFO | SEMTOTAL)) {
|
|
fprintf(stderr, "SVID semaphores facility not configured in the system\n");
|
|
}
|
|
if (!use_sysctl)
|
|
kvm_close(kd);
|
|
|
|
exit(0);
|
|
}
|
|
|
|
void
|
|
sysctlgatherstruct(void *addr, size_t size, struct scgs_vector *vecarr)
|
|
{
|
|
struct scgs_vector *xp;
|
|
size_t tsiz;
|
|
int rv;
|
|
|
|
for (xp = vecarr; xp->sysctl != NULL; xp++) {
|
|
assert(xp->offset <= size);
|
|
tsiz = xp->size;
|
|
rv = sysctlbyname(xp->sysctl, (char *)addr + xp->offset,
|
|
&tsiz, NULL, 0);
|
|
if (rv == -1)
|
|
err(1, "sysctlbyname: %s", xp->sysctl);
|
|
if (tsiz != xp->size)
|
|
errx(1, "%s size mismatch (expected %d, got %d)",
|
|
xp->sysctl, xp->size, tsiz);
|
|
}
|
|
}
|
|
|
|
void
|
|
kget(int idx, void *addr, size_t size)
|
|
{
|
|
char *symn; /* symbol name */
|
|
size_t tsiz;
|
|
int rv;
|
|
unsigned long kaddr;
|
|
const char *sym2sysctl[] = { /* symbol to sysctl name table */
|
|
"kern.ipc.sema",
|
|
"kern.ipc.seminfo",
|
|
"kern.ipc.msginfo",
|
|
"kern.ipc.msqids",
|
|
"kern.ipc.shminfo",
|
|
"kern.ipc.shmsegs" };
|
|
|
|
assert((unsigned)idx <= sizeof(sym2sysctl) / sizeof(*sym2sysctl));
|
|
if (!use_sysctl) {
|
|
symn = symbols[idx].n_name;
|
|
if (*symn == '_')
|
|
symn++;
|
|
if (symbols[idx].n_type == 0 || symbols[idx].n_value == 0)
|
|
errx(1, "symbol %s undefined", symn);
|
|
/*
|
|
* For some symbols, the value we retrieve is
|
|
* actually a pointer; since we want the actual value,
|
|
* we have to manually dereference it.
|
|
*/
|
|
switch (idx) {
|
|
case X_MSQIDS:
|
|
tsiz = sizeof(msqids);
|
|
rv = kvm_read(kd, symbols[idx].n_value,
|
|
&msqids, tsiz);
|
|
kaddr = (u_long)msqids;
|
|
break;
|
|
case X_SHMSEGS:
|
|
tsiz = sizeof(shmsegs);
|
|
rv = kvm_read(kd, symbols[idx].n_value,
|
|
&shmsegs, tsiz);
|
|
kaddr = (u_long)shmsegs;
|
|
break;
|
|
case X_SEMA:
|
|
tsiz = sizeof(sema);
|
|
rv = kvm_read(kd, symbols[idx].n_value,
|
|
&sema, tsiz);
|
|
kaddr = (u_long)sema;
|
|
break;
|
|
default:
|
|
rv = tsiz = 0;
|
|
kaddr = symbols[idx].n_value;
|
|
break;
|
|
}
|
|
if ((unsigned)rv != tsiz)
|
|
errx(1, "%s: %s", symn, kvm_geterr(kd));
|
|
if ((unsigned)kvm_read(kd, kaddr, addr, size) != size)
|
|
errx(1, "%s: %s", symn, kvm_geterr(kd));
|
|
} else {
|
|
switch (idx) {
|
|
case X_SHMINFO:
|
|
sysctlgatherstruct(addr, size, shminfo_scgsv);
|
|
break;
|
|
case X_SEMINFO:
|
|
sysctlgatherstruct(addr, size, seminfo_scgsv);
|
|
break;
|
|
case X_MSGINFO:
|
|
sysctlgatherstruct(addr, size, msginfo_scgsv);
|
|
break;
|
|
default:
|
|
tsiz = size;
|
|
rv = sysctlbyname(sym2sysctl[idx], addr, &tsiz,
|
|
NULL, 0);
|
|
if (rv == -1)
|
|
err(1, "sysctlbyname: %s", sym2sysctl[idx]);
|
|
if (tsiz != size)
|
|
errx(1, "%s size mismatch "
|
|
"(expected %d, got %d)",
|
|
sym2sysctl[idx], size, tsiz);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
uid_t
|
|
user2uid(char *username)
|
|
{
|
|
struct passwd *pwd;
|
|
uid_t uid;
|
|
char *r;
|
|
|
|
uid = strtoul(username, &r, 0);
|
|
if (!*r && r != username)
|
|
return (uid);
|
|
if ((pwd = getpwnam(username)) == NULL)
|
|
errx(1, "getpwnam failed: No such user");
|
|
endpwent();
|
|
return (pwd->pw_uid);
|
|
}
|
|
|
|
void
|
|
usage(void)
|
|
{
|
|
|
|
fprintf(stderr,
|
|
"usage: ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist] [-u user]\n");
|
|
exit(1);
|
|
}
|