2 * Copyright (c) 1994 SigmaSoft, Th. Lockert <tholo@sigmasoft.com>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
17 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
18 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
19 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * $FreeBSD: src/usr.bin/ipcs/ipcs.c,v 1.12.2.4 2003/04/08 11:01:34 tjr Exp $
30 #define _KERNEL_STRUCTURES
44 #include <sys/types.h>
45 #include <sys/param.h>
52 struct semid_pool
*sema
;
53 struct seminfo seminfo
;
54 struct msginfo msginfo
;
55 struct msqid_ds
*msqids
;
56 struct shminfo shminfo
;
57 struct shmid_ds
*shmsegs
;
59 static void usage(void);
60 static uid_t
user2uid(const char *);
61 static gid_t
grp2gid(const char *);
63 static struct nlist symbols
[] = {
64 { .n_name
= "_sema" },
66 { .n_name
= "_seminfo" },
68 { .n_name
= "_msginfo" },
70 { .n_name
= "_msqids" },
72 { .n_name
= "_shminfo" },
74 { .n_name
= "_shmsegs" },
82 fmt_perm(u_short mode
)
84 static char buffer
[100];
88 buffer
[2] = ((mode
& 0400) ? 'r' : '-');
89 buffer
[3] = ((mode
& 0200) ? 'w' : '-');
90 buffer
[4] = ((mode
& 0100) ? 'a' : '-');
91 buffer
[5] = ((mode
& 0040) ? 'r' : '-');
92 buffer
[6] = ((mode
& 0020) ? 'w' : '-');
93 buffer
[7] = ((mode
& 0010) ? 'a' : '-');
94 buffer
[8] = ((mode
& 0004) ? 'r' : '-');
95 buffer
[9] = ((mode
& 0002) ? 'w' : '-');
96 buffer
[10] = ((mode
& 0001) ? 'a' : '-');
102 cvt_time(time_t t
, char *buf
)
107 strcpy(buf
, "noentry");
110 sprintf(buf
, "%2d:%02d:%02d",
111 tm
->tm_hour
, tm
->tm_min
, tm
->tm_sec
);
123 #define OUTSTANDING 4
128 main(int argc
, char **argv
)
130 int display
= SHMINFO
| MSGINFO
| SEMINFO
;
132 char *core
, *namelist
;
138 core
= namelist
= NULL
;
141 while ((i
= getopt(argc
, argv
, "MmQqSsabC:cN:ou:g:ptT")) != -1)
162 display
= SHMTOTAL
| MSGTOTAL
| SEMTOTAL
;
165 option
|= BIGGEST
| CREATOR
| OUTSTANDING
| PID
| TIME
;
180 option
|= OUTSTANDING
;
191 useruid
= user2uid(optarg
);
196 grpgid
= grp2gid(optarg
);
203 * Discard setgid privileges if not the running kernel so that bad
204 * guys can't print interesting stuff from kernel memory.
206 if (namelist
!= NULL
|| core
!= NULL
)
209 if ((kd
= kvm_open(namelist
, core
, NULL
, O_RDONLY
, "ipcs")) == NULL
)
212 switch (kvm_nlist(kd
, symbols
)) {
216 errx(1, "unable to read kernel symbol table");
218 #ifdef notdef /* they'll be told more civilly later */
219 warnx("nlist failed");
220 for (i
= 0; symbols
[i
].n_name
!= NULL
; i
++)
221 if (symbols
[i
].n_value
== 0)
222 warnx("symbol %s not found",
228 if ((display
& (MSGINFO
| MSGTOTAL
)) &&
229 kvm_read(kd
, symbols
[X_MSGINFO
].n_value
, &msginfo
, sizeof(msginfo
))== sizeof(msginfo
)) {
231 if (display
& MSGTOTAL
) {
232 printf("msginfo:\n");
233 printf("\tmsgmax: %6d\t(max characters in a message)\n",
235 printf("\tmsgmni: %6d\t(# of message queues)\n",
237 printf("\tmsgmnb: %6d\t(max characters in a message queue)\n",
239 printf("\tmsgtql: %6d\t(max # of messages in system)\n",
241 printf("\tmsgssz: %6d\t(size of a message segment)\n",
243 printf("\tmsgseg: %6d\t(# of message segments in system)\n\n",
246 if (display
& MSGINFO
) {
247 struct msqid_ds
*xmsqids
;
249 kvm_read(kd
, symbols
[X_MSQIDS
].n_value
, &msqids
, sizeof(msqids
));
250 xmsqids
= malloc(sizeof(struct msqid_ds
) * msginfo
.msgmni
);
251 kvm_read(kd
, (u_long
) msqids
, xmsqids
, sizeof(struct msqid_ds
) * msginfo
.msgmni
);
253 printf("Message Queues:\n");
254 printf("T ID KEY MODE OWNER GROUP");
255 if (option
& CREATOR
)
256 printf(" CREATOR CGROUP");
257 if (option
& OUTSTANDING
)
258 printf(" CBYTES QNUM");
259 if (option
& BIGGEST
)
262 printf(" LSPID LRPID");
264 printf(" STIME RTIME CTIME");
266 for (i
= 0; i
< msginfo
.msgmni
; i
+= 1) {
267 if (xmsqids
[i
].msg_qbytes
!= 0) {
268 char stime_buf
[100], rtime_buf
[100],
270 struct msqid_ds
*msqptr
= &xmsqids
[i
];
272 if (user
&& useruid
!= msqptr
->msg_perm
.uid
)
274 if (grp
&& grpgid
!= msqptr
->msg_perm
.gid
)
277 cvt_time(msqptr
->msg_stime
, stime_buf
);
278 cvt_time(msqptr
->msg_rtime
, rtime_buf
);
279 cvt_time(msqptr
->msg_ctime
, ctime_buf
);
281 printf("q %6d %10ld %s %8s %8s",
282 IXSEQ_TO_IPCID(i
, msqptr
->msg_perm
),
283 (long)msqptr
->msg_perm
.key
,
284 fmt_perm(msqptr
->msg_perm
.mode
),
285 user_from_uid(msqptr
->msg_perm
.uid
, 0),
286 group_from_gid(msqptr
->msg_perm
.gid
, 0));
288 if (option
& CREATOR
)
290 user_from_uid(msqptr
->msg_perm
.cuid
, 0),
291 group_from_gid(msqptr
->msg_perm
.cgid
, 0));
293 if (option
& OUTSTANDING
)
298 if (option
& BIGGEST
)
304 (int)msqptr
->msg_lspid
,
305 (int)msqptr
->msg_lrpid
);
319 if (display
& (MSGINFO
| MSGTOTAL
)) {
321 "SVID messages facility not configured in the system\n");
323 if ((display
& (SHMINFO
| SHMTOTAL
)) &&
324 kvm_read(kd
, symbols
[X_SHMINFO
].n_value
, &shminfo
, sizeof(shminfo
))) {
325 if (display
& SHMTOTAL
) {
326 printf("shminfo:\n");
327 printf("\tshmmax: %12ld\t(max shared memory segment size)\n",
329 printf("\tshmmin: %12ld\t(min shared memory segment size)\n",
331 printf("\tshmmni: %12ld\t(max number of shared memory identifiers)\n",
333 printf("\tshmseg: %12ld\t(max shared memory segments per process)\n",
335 printf("\tshmall: %12ld\t(max amount of shared memory in pages)\n\n",
338 if (display
& SHMINFO
) {
339 struct shmid_ds
*xshmids
;
341 kvm_read(kd
, symbols
[X_SHMSEGS
].n_value
, &shmsegs
, sizeof(shmsegs
));
342 xshmids
= malloc(sizeof(struct shmid_ds
) * shminfo
.shmmni
);
343 kvm_read(kd
, (u_long
) shmsegs
, xshmids
, sizeof(struct shmid_ds
) *
346 printf("Shared Memory:\n");
347 printf("T ID KEY MODE OWNER GROUP");
348 if (option
& CREATOR
)
349 printf(" CREATOR CGROUP");
350 if (option
& OUTSTANDING
)
352 if (option
& BIGGEST
)
355 printf(" CPID LPID");
357 printf(" ATIME DTIME CTIME");
359 for (i
= 0; i
< shminfo
.shmmni
; i
+= 1) {
360 if (xshmids
[i
].shm_perm
.mode
& 0x0800) {
361 char atime_buf
[100], dtime_buf
[100],
363 struct shmid_ds
*shmptr
= &xshmids
[i
];
365 if (user
&& useruid
!= shmptr
->shm_perm
.uid
)
368 if (grp
&& grpgid
!= shmptr
->shm_perm
.gid
)
371 cvt_time(shmptr
->shm_atime
, atime_buf
);
372 cvt_time(shmptr
->shm_dtime
, dtime_buf
);
373 cvt_time(shmptr
->shm_ctime
, ctime_buf
);
375 printf("m %6d %10ld %s %8s %8s",
376 IXSEQ_TO_IPCID(i
, shmptr
->shm_perm
),
377 (long)shmptr
->shm_perm
.key
,
378 fmt_perm(shmptr
->shm_perm
.mode
),
379 user_from_uid(shmptr
->shm_perm
.uid
, 0),
380 group_from_gid(shmptr
->shm_perm
.gid
, 0));
382 if (option
& CREATOR
)
384 user_from_uid(shmptr
->shm_perm
.cuid
, 0),
385 group_from_gid(shmptr
->shm_perm
.cgid
, 0));
387 if (option
& OUTSTANDING
)
391 if (option
& BIGGEST
)
412 if (display
& (SHMINFO
| SHMTOTAL
)) {
414 "SVID shared memory facility not configured in the system\n");
416 if ((display
& (SEMINFO
| SEMTOTAL
)) &&
417 kvm_read(kd
, symbols
[X_SEMINFO
].n_value
, &seminfo
, sizeof(seminfo
))) {
418 struct semid_pool
*xsema
;
420 if (display
& SEMTOTAL
) {
421 printf("seminfo:\n");
422 printf("\tsemmap: %6d\t(# of entries in semaphore map)\n",
424 printf("\tsemmni: %6d\t(# of semaphore identifiers)\n",
426 printf("\tsemmns: %6d\t(# of semaphores in system)\n",
428 printf("\tsemmnu: %6d\t(# of undo structures in system)\n",
430 printf("\tsemmsl: %6d\t(max # of semaphores per id)\n",
432 printf("\tsemopm: %6d\t(max # of operations per semop call)\n",
434 printf("\tsemume: %6d\t(max # of undo entries per process)\n",
436 printf("\tsemusz: %6d\t(size in bytes of undo structure)\n",
438 printf("\tsemvmx: %6d\t(semaphore maximum value)\n",
440 printf("\tsemaem: %6d\t(adjust on exit max value)\n\n",
443 if (display
& SEMINFO
) {
444 kvm_read(kd
, symbols
[X_SEMA
].n_value
, &sema
, sizeof(sema
));
445 xsema
= malloc(sizeof(struct semid_pool
) * seminfo
.semmni
);
446 kvm_read(kd
, (u_long
) sema
, xsema
, sizeof(struct semid_pool
) * seminfo
.semmni
);
448 printf("Semaphores:\n");
449 printf("T ID KEY MODE OWNER GROUP");
450 if (option
& CREATOR
)
451 printf(" CREATOR CGROUP");
452 if (option
& BIGGEST
)
455 printf(" OTIME CTIME");
457 for (i
= 0; i
< seminfo
.semmni
; i
+= 1) {
458 if ((xsema
[i
].ds
.sem_perm
.mode
& SEM_ALLOC
) != 0) {
459 char ctime_buf
[100], otime_buf
[100];
460 struct semid_ds
*semaptr
= &xsema
[i
].ds
;
462 if (user
&& useruid
!= semaptr
->sem_perm
.uid
)
465 if (grp
&& grpgid
!= semaptr
->sem_perm
.gid
)
468 cvt_time(semaptr
->sem_otime
, otime_buf
);
469 cvt_time(semaptr
->sem_ctime
, ctime_buf
);
471 printf("s %6d %10ld %s %8s %8s",
472 IXSEQ_TO_IPCID(i
, semaptr
->sem_perm
),
473 (long)semaptr
->sem_perm
.key
,
474 fmt_perm(semaptr
->sem_perm
.mode
),
475 user_from_uid(semaptr
->sem_perm
.uid
, 0),
476 group_from_gid(semaptr
->sem_perm
.gid
, 0));
478 if (option
& CREATOR
)
480 user_from_uid(semaptr
->sem_perm
.cuid
, 0),
481 group_from_gid(semaptr
->sem_perm
.cgid
, 0));
483 if (option
& BIGGEST
)
499 if (display
& (SEMINFO
| SEMTOTAL
)) {
500 fprintf(stderr
, "SVID semaphores facility not configured in the system\n");
508 user2uid(const char *username
)
514 uid
= strtoul(username
, &r
, 0);
515 if (!*r
&& r
!= username
)
517 if ((pwd
= getpwnam(username
)) == NULL
)
518 errx(1, "No such user");
520 return (pwd
->pw_uid
);
524 grp2gid(const char *groupname
)
530 gid
= strtol(groupname
, &r
, 0);
531 if (!*r
&& r
!= groupname
)
533 if ((grp
= getgrnam(groupname
)) == NULL
)
534 errx(1, "No such group");
536 return (grp
->gr_gid
);
544 "usage: ipcs [-abcmopqstMQST] [-C corefile] [-N namelist] [-u user] [-g group]\n");