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freebsd-nq/usr.bin/ipcs/ipcs.c
Peter Wemm c447342094 Change #ifdef KERNEL to #ifdef _KERNEL in the public headers. "KERNEL" 
is an application space macro and the applications are supposed to be free
to use it as they please (but cannot).  This is consistant with the other
BSD's who made this change quite some time ago.  More commits to come.
1999-12-29 05:07:58 +00:00

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