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Import NetBSD ipcs(1)

Browse Source 
The old ipcs(1) utility had a dubious license at best.

Change-Id: Ic4c0a24f04c94cc77a43658f6c939d138461bd6a
This commit is contained in:
David van Moolenbroek 2015-12-17 13:07:17 +00:00 committed by Lionel Sambuc
parent 2f09e77b82
commit 7b09d0426a
8 changed files with 827 additions and 689 deletions
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1
distrib/sets/lists/minix-man/mi
View File

@ -147,6 +147,7 @@
./usr/man/man1/infokey.1 minix-man
./usr/man/man1/install-info.1 minix-man
./usr/man/man1/install.1 minix-man
./usr/man/man1/ipcs.1 minix-man
./usr/man/man1/isodir.1 minix-man
./usr/man/man1/isoinfo.1 minix-man
./usr/man/man1/isoread.1 minix-man

2
minix/commands/Makefile
View File

@ -12,7 +12,7 @@ SUBDIR= add_route arp at backup \
fix format fsck.mfs \
gcov-pull host \
hostaddr ifconfig ifdef \
intr ipcrm ipcs irdpd isoread \
intr ipcrm irdpd isoread \
loadkeys loadramdisk logger look lp \
lpd lspci mail MAKEDEV \
mount mt netconf \

4
minix/commands/ipcs/Makefile
View File

@ -1,4 +0,0 @@
PROG= ipcs
MAN=
.include <bsd.prog.mk>

683
minix/commands/ipcs/ipcs.c
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@ -1,683 +0,0 @@
/* Original author unknown, may be "krishna balasub@cis.ohio-state.edu" */
/*
Modified Sat Oct 9 10:55:28 1993 for 0.99.13
Patches from Mike Jagdis (jaggy@purplet.demon.co.uk) applied Wed Feb
8 12:12:21 1995 by faith@cs.unc.edu to print numeric uids if no
passwd file entry.
Patch from arnolds@ifns.de (Heinz-Ado Arnolds) applied Mon Jul 1
19:30:41 1996 by janl@math.uio.no to add code missing in case PID:
clauses.
Patched to display the key field -- hy@picksys.com 12/18/96
1999-02-22 Arkadiusz Mi秌iewicz <misiek@pld.ORG.PL>
- added Native Language Support
*/
#define __USE_MISC
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <time.h>
#include <pwd.h>
#include <grp.h>
#include <unistd.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/sem.h>
#include <err.h>
/* remove _() stuff */
#define _(a) a
/*-------------------------------------------------------------------*/
/* SHM_DEST and SHM_LOCKED are defined in kernel headers,
but inside #ifdef __KERNEL__ ... #endif */
#ifndef SHM_DEST
/* shm_mode upper byte flags */
#define SHM_DEST 01000 /* segment will be destroyed on last detach */
#define SHM_LOCKED 02000 /* segment will not be swapped */
#endif
/* For older kernels the same holds for the defines below */
#ifndef MSG_STAT
#define MSG_STAT 11
#define MSG_INFO 12
#endif
#ifndef SHM_STAT
#define SHM_STAT 13
#define SHM_INFO 14
struct shm_info {
int used_ids;
ulong shm_tot; /* total allocated shm */
ulong shm_rss; /* total resident shm */
ulong shm_swp; /* total swapped shm */
ulong swap_attempts;
ulong swap_successes;
};
#endif
#ifndef SEM_STAT
#define SEM_STAT 18
#define SEM_INFO 19
#endif
/* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */
#ifndef IPC_INFO
#define IPC_INFO 3
#endif
/*-------------------------------------------------------------------*/
/* The last arg of semctl is a union semun, but where is it defined?
X/OPEN tells us to define it ourselves, but until recently
Linux include files would also define it. */
#if defined (__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
/* union semun is defined by including <sys/sem.h> */
#else
/* according to X/OPEN we have to define it ourselves */
union semun {
int val;
struct semid_ds *buf;
unsigned short int *array;
struct seminfo *__buf;
};
#endif
/* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm;
libc 4/5 does not mention struct ipc_term at all, but includes
<linux/ipc.h>, which defines a struct ipc_perm with such fields.
glibc-1.09 has no support for sysv ipc.
glibc 2 uses __key, __seq */
#if defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1
#define KEY __key
#else
#define KEY _key
#endif
#define LIMITS 1
#define STATUS 2
#define CREATOR 3
#define TIME 4
#define PID 5
void do_shm (char format);
void do_sem (char format);
void do_msg (char format);
void print_shm (int id);
void print_msg (int id);
void print_sem (int id);
static char *progname;
static void
usage(int rc) {
printf (_("usage : %s -asmq -tclup \n"), progname);
printf (_("\t%s [-s -m -q] -i id\n"), progname);
printf (_("\t%s -h for help.\n"), progname);
exit(rc);
}
static void
help (int rc) {
printf (_("%s provides information on ipc facilities for"
" which you have read access.\n"), progname);
printf (_("Resource Specification:\n\t-m : shared_mem\n\t-q : messages\n"));
printf (_("\t-s : semaphores\n\t-a : all (default)\n"));
printf (_("Output Format:\n\t-t : time\n\t-p : pid\n\t-c : creator\n"));
printf (_("\t-l : limits\n\t-u : summary\n"));
printf (_("-i id [-s -q -m] : details on resource identified by id\n"));
usage(rc);
}
int
main (int argc, char **argv) {
int opt, msg = 0, sem = 0, shm = 0, id=0, print=0;
char format = 0;
char options[] = "atcluphsmqi:";
progname = argv[0];
while ((opt = getopt (argc, argv, options)) != -1) {
switch (opt) {
case 'i':
id = atoi (optarg);
print = 1;
break;
case 'a':
msg = shm = sem = 1;
break;
case 'q':
msg = 1;
break;
case 's':
sem = 1;
break;
case 'm':
shm = 1;
break;
case 't':
format = TIME;
break;
case 'c':
format = CREATOR;
break;
case 'p':
format = PID;
break;
case 'l':
format = LIMITS;
break;
case 'u':
format = STATUS;
break;
case 'h':
help(EXIT_SUCCESS);
case '?':
usage(EXIT_SUCCESS);
}
}
if (print) {
if (shm)
print_shm (id);
else if (sem)
print_sem (id);
else if (msg)
print_msg (id);
else
usage (EXIT_FAILURE);
} else {
if ( !shm && !msg && !sem)
msg = sem = shm = 1;
printf ("\n");
if (shm) {
do_shm (format);
printf ("\n");
}
if (sem) {
do_sem (format);
printf ("\n");
}
if (msg) {
do_msg (format);
printf ("\n");
}
}
return EXIT_SUCCESS;
}
static void
print_perms (int id, struct ipc_perm *ipcp) {
struct passwd *pw;
struct group *gr;
printf ("%-10d %-10o", id, ipcp->mode & 0777);
if ((pw = getpwuid(ipcp->cuid)))
printf(" %-10s", pw->pw_name);
else
printf(" %-10d", ipcp->cuid);
if ((gr = getgrgid(ipcp->cgid)))
printf(" %-10s", gr->gr_name);
else
printf(" %-10d", ipcp->cgid);
if ((pw = getpwuid(ipcp->uid)))
printf(" %-10s", pw->pw_name);
else
printf(" %-10d", ipcp->uid);
if ((gr = getgrgid(ipcp->gid)))
printf(" %-10s\n", gr->gr_name);
else
printf(" %-10d\n", ipcp->gid);
}
void do_shm (char format)
{
int maxid, shmid, id;
struct shmid_ds shmseg;
struct shm_info shm_info;
struct shminfo shminfo;
struct ipc_perm *ipcp = &shmseg.shm_perm;
struct passwd *pw;
maxid = shmctl (0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
if (maxid < 0 && errno == ENOSYS) {
printf (_("kernel not configured for shared memory\n"));
return;
}
switch (format) {
case LIMITS:
printf (_("------ Shared Memory Limits --------\n"));
if ((shmctl (0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0 )
return;
/* glibc 2.1.3 and all earlier libc's have ints as fields
of struct shminfo; glibc 2.1.91 has unsigned long; ach */
printf (_("max number of segments = %lu\n"),
(unsigned long) shminfo.shmmni);
printf (_("max seg size (kbytes) = %lu\n"),
(unsigned long) (shminfo.shmmax >> 10));
printf (_("max total shared memory (kbytes) = %lu\n"),
getpagesize() / 1024 * (unsigned long) shminfo.shmall);
printf (_("min seg size (bytes) = %lu\n"),
(unsigned long) shminfo.shmmin);
return;
case STATUS:
printf (_("------ Shared Memory Status --------\n"));
printf (_("segments allocated %d\n"), shm_info.used_ids);
printf (_("pages allocated %ld\n"), shm_info.shm_tot);
printf (_("pages resident %ld\n"), shm_info.shm_rss);
printf (_("pages swapped %ld\n"), shm_info.shm_swp);
printf (_("Swap performance: %ld attempts\t %ld successes\n"),
shm_info.swap_attempts, shm_info.swap_successes);
return;
case CREATOR:
printf (_("------ Shared Memory Segment Creators/Owners --------\n"));
printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
_("shmid"),_("perms"),_("cuid"),_("cgid"),_("uid"),_("gid"));
break;
case TIME:
printf (_("------ Shared Memory Attach/Detach/Change Times --------\n"));
printf ("%-10s %-10s %-20s %-20s %-20s\n",
_("shmid"),_("owner"),_("attached"),_("detached"),
_("changed"));
break;
case PID:
printf (_("------ Shared Memory Creator/Last-op --------\n"));
printf ("%-10s %-10s %-10s %-10s\n",
_("shmid"),_("owner"),_("cpid"),_("lpid"));
break;
default:
printf (_("------ Shared Memory Segments --------\n"));
printf ("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n",
_("key"),_("shmid"),_("owner"),_("perms"),_("bytes"),
_("nattch"),_("status"));
break;
}
for (id = 0; id <= maxid; id++) {
shmid = shmctl (id, SHM_STAT, &shmseg);
if (shmid < 0)
continue;
if (format == CREATOR) {
print_perms (shmid, ipcp);
continue;
}
pw = getpwuid(ipcp->uid);
switch (format) {
case TIME:
if (pw)
printf ("%-10d %-10.10s", shmid, pw->pw_name);
else
printf ("%-10d %-10d", shmid, ipcp->uid);
/* ctime uses static buffer: use separate calls */
printf(" %-20.16s", shmseg.shm_atime
? ctime(&shmseg.shm_atime) + 4 : _("Not set"));
printf(" %-20.16s", shmseg.shm_dtime
? ctime(&shmseg.shm_dtime) + 4 : _("Not set"));
printf(" %-20.16s\n", shmseg.shm_ctime
? ctime(&shmseg.shm_ctime) + 4 : _("Not set"));
break;
case PID:
if (pw)
printf ("%-10d %-10.10s", shmid, pw->pw_name);
else
printf ("%-10d %-10d", shmid, ipcp->uid);
printf (" %-10d %-10d\n",
shmseg.shm_cpid, shmseg.shm_lpid);
break;
default:
printf("0x%08lx ",ipcp->KEY );
if (pw)
printf ("%-10d %-10.10s", shmid, pw->pw_name);
else
printf ("%-10d %-10d", shmid, ipcp->uid);
printf (" %-10o %-10lu %-10ld %-6s %-6s\n",
ipcp->mode & 0777,
/*
* earlier: int, Austin has size_t
*/
(unsigned long) shmseg.shm_segsz,
/*
* glibc-2.1.3 and earlier has unsigned short;
* Austin has shmatt_t
*/
(long) shmseg.shm_nattch,
ipcp->mode & SHM_DEST ? _("dest") : " ",
ipcp->mode & SHM_LOCKED ? _("locked") : " ");
break;
}
}
return;
}
void do_sem (char format)
{
int maxid, semid, id;
struct semid_ds semary;
struct seminfo seminfo;
struct ipc_perm *ipcp = &semary.sem_perm;
struct passwd *pw;
union semun arg;
arg.array = (unsigned short *) (void *) &seminfo;
maxid = semctl (0, 0, SEM_INFO, arg);
if (maxid < 0) {
printf (_("kernel not configured for semaphores\n"));
return;
}
switch (format) {
case LIMITS:
printf (_("------ Semaphore Limits --------\n"));
arg.array = (unsigned short *) (void *) &seminfo; /* damn union */
if ((semctl (0, 0, IPC_INFO, arg)) < 0 )
return;
printf (_("max number of arrays = %d\n"), seminfo.semmni);
printf (_("max semaphores per array = %d\n"), seminfo.semmsl);
printf (_("max semaphores system wide = %d\n"), seminfo.semmns);
printf (_("max ops per semop call = %d\n"), seminfo.semopm);
printf (_("semaphore max value = %d\n"), seminfo.semvmx);
return;
case STATUS:
printf (_("------ Semaphore Status --------\n"));
printf (_("used arrays = %d\n"), seminfo.semusz);
printf (_("allocated semaphores = %d\n"), seminfo.semaem);
return;
case CREATOR:
printf (_("------ Semaphore Arrays Creators/Owners --------\n"));
printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
_("semid"),_("perms"),_("cuid"),_("cgid"),_("uid"),_("gid"));
break;
case TIME:
printf (_("------ Semaphore Operation/Change Times --------\n"));
printf ("%-8s %-10s %-26.24s %-26.24s\n",
_("semid"),_("owner"),_("last-op"),_("last-changed"));
break;
case PID:
break;
default:
printf (_("------ Semaphore Arrays --------\n"));
printf ("%-10s %-10s %-10s %-10s %-10s\n",
_("key"),_("semid"),_("owner"),_("perms"),_("nsems"));
break;
}
for (id = 0; id <= maxid; id++) {
arg.buf = (struct semid_ds *) &semary;
semid = semctl (id, 0, SEM_STAT, arg);
if (semid < 0)
continue;
if (format == CREATOR) {
print_perms (semid, ipcp);
continue;
}
pw = getpwuid(ipcp->uid);
switch (format) {
case TIME:
if (pw)
printf ("%-8d %-10.10s", semid, pw->pw_name);
else
printf ("%-8d %-10d", semid, ipcp->uid);
printf (" %-26.24s", semary.sem_otime
? ctime(&semary.sem_otime) : _("Not set"));
printf (" %-26.24s\n", semary.sem_ctime
? ctime(&semary.sem_ctime) : _("Not set"));
break;
case PID:
break;
default:
printf("0x%08lx ", ipcp->KEY);
if (pw)
printf ("%-10d %-10.10s", semid, pw->pw_name);
else
printf ("%-10d %-10d", semid, ipcp->uid);
printf (" %-10o %-10ld\n",
ipcp->mode & 0777,
/*
* glibc-2.1.3 and earlier has unsigned short;
* glibc-2.1.91 has variation between
* unsigned short and unsigned long
* Austin prescribes unsigned short.
*/
(long) semary.sem_nsems);
break;
}
}
}
void do_msg (char format)
{
#if 0
int maxid, msqid, id;
struct msqid_ds msgque;
struct msginfo msginfo;
struct ipc_perm *ipcp = &msgque.msg_perm;
struct passwd *pw;
maxid = msgctl (0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
if (maxid < 0) {
printf (_("kernel not configured for message queues\n"));
return;
}
switch (format) {
case LIMITS:
if ((msgctl (0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0 )
return;
printf (_("------ Messages: Limits --------\n"));
printf (_("max queues system wide = %d\n"), msginfo.msgmni);
printf (_("max size of message (bytes) = %d\n"), msginfo.msgmax);
printf (_("default max size of queue (bytes) = %d\n"), msginfo.msgmnb);
return;
case STATUS:
printf (_("------ Messages: Status --------\n"));
printf (_("allocated queues = %d\n"), msginfo.msgpool);
printf (_("used headers = %d\n"), msginfo.msgmap);
printf (_("used space = %d bytes\n"), msginfo.msgtql);
return;
case CREATOR:
printf (_("------ Message Queues: Creators/Owners --------\n"));
printf ("%-10s %-10s %-10s %-10s %-10s %-10s\n",
_("msqid"),_("perms"),_("cuid"),_("cgid"),_("uid"),_("gid"));
break;
case TIME:
printf (_("------ Message Queues Send/Recv/Change Times --------\n"));
printf ("%-8s %-10s %-20s %-20s %-20s\n",
_("msqid"),_("owner"),_("send"),_("recv"),_("change"));
break;
case PID:
printf (_("------ Message Queues PIDs --------\n"));
printf ("%-10s %-10s %-10s %-10s\n",
_("msqid"),_("owner"),_("lspid"),_("lrpid"));
break;
default:
printf (_("------ Message Queues --------\n"));
printf ("%-10s %-10s %-10s %-10s %-12s %-12s\n",
_("key"), _("msqid"), _("owner"), _("perms"),
_("used-bytes"), _("messages"));
break;
}
for (id = 0; id <= maxid; id++) {
msqid = msgctl (id, MSG_STAT, &msgque);
if (msqid < 0)
continue;
if (format == CREATOR) {
print_perms (msqid, ipcp);
continue;
}
pw = getpwuid(ipcp->uid);
switch (format) {
case TIME:
if (pw)
printf ("%-8d %-10.10s", msqid, pw->pw_name);
else
printf ("%-8d %-10d", msqid, ipcp->uid);
printf (" %-20.16s", msgque.msg_stime
? ctime(&msgque.msg_stime) + 4 : _("Not set"));
printf (" %-20.16s", msgque.msg_rtime
? ctime(&msgque.msg_rtime) + 4 : _("Not set"));
printf (" %-20.16s\n", msgque.msg_ctime
? ctime(&msgque.msg_ctime) + 4 : _("Not set"));
break;
case PID:
if (pw)
printf ("%-8d %-10.10s", msqid, pw->pw_name);
else
printf ("%-8d %-10d", msqid, ipcp->uid);
printf (" %5d %5d\n",
msgque.msg_lspid, msgque.msg_lrpid);
break;
default:
printf( "0x%08x ",ipcp->KEY );
if (pw)
printf ("%-10d %-10.10s", msqid, pw->pw_name);
else
printf ("%-10d %-10d", msqid, ipcp->uid);
printf (" %-10o %-12ld %-12ld\n",
ipcp->mode & 0777,
/*
* glibc-2.1.3 and earlier has unsigned short;
* glibc-2.1.91 has variation between
* unsigned short, unsigned long
* Austin has msgqnum_t
*/
(long) msgque.msg_cbytes,
(long) msgque.msg_qnum);
break;
}
}
return;
#endif
}
void print_shm (int shmid)
{
struct shmid_ds shmds;
struct ipc_perm *ipcp = &shmds.shm_perm;
if (shmctl (shmid, IPC_STAT, &shmds) == -1)
err(EXIT_FAILURE, _("shmctl failed"));
printf (_("\nShared memory Segment shmid=%d\n"), shmid);
printf (_("uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n"),
ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid);
printf (_("mode=%#o\taccess_perms=%#o\n"),
ipcp->mode, ipcp->mode & 0777);
printf (_("bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n"),
(long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid,
(long) shmds.shm_nattch);
printf (_("att_time=%-26.24s\n"),
shmds.shm_atime ? ctime (&shmds.shm_atime) : _("Not set"));
printf (_("det_time=%-26.24s\n"),
shmds.shm_dtime ? ctime (&shmds.shm_dtime) : _("Not set"));
printf (_("change_time=%-26.24s\n"), ctime (&shmds.shm_ctime));
printf ("\n");
return;
}
void print_msg (int msqid)
{
#if 0
struct msqid_ds buf;
struct ipc_perm *ipcp = &buf.msg_perm;
if (msgctl (msqid, IPC_STAT, &buf) == -1)
err(EXIT_FAILURE, _("msgctl failed"));
printf (_("\nMessage Queue msqid=%d\n"), msqid);
printf (_("uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n"),
ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode);
printf (_("cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n"),
/*
* glibc-2.1.3 and earlier has unsigned short;
* glibc-2.1.91 has variation between
* unsigned short, unsigned long
* Austin has msgqnum_t (for msg_qbytes)
*/
(long) buf.msg_cbytes, (long) buf.msg_qbytes,
(long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid);
printf (_("send_time=%-26.24s\n"),
buf.msg_stime ? ctime (&buf.msg_stime) : _("Not set"));
printf (_("rcv_time=%-26.24s\n"),
buf.msg_rtime ? ctime (&buf.msg_rtime) : _("Not set"));
printf (_("change_time=%-26.24s\n"),
buf.msg_ctime ? ctime (&buf.msg_ctime) : _("Not set"));
printf ("\n");
return;
#endif
}
void print_sem (int semid)
{
struct semid_ds semds;
struct ipc_perm *ipcp = &semds.sem_perm;
union semun arg;
int i;
arg.buf = &semds;
if (semctl (semid, 0, IPC_STAT, arg) < 0)
err(EXIT_FAILURE, _("semctl failed"));
printf (_("\nSemaphore Array semid=%d\n"), semid);
printf (_("uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n"),
ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid);
printf (_("mode=%#o, access_perms=%#o\n"),
ipcp->mode, ipcp->mode & 0777);
printf (_("nsems = %ld\n"), (long) semds.sem_nsems);
printf (_("otime = %-26.24s\n"),
semds.sem_otime ? ctime (&semds.sem_otime) : _("Not set"));
printf (_("ctime = %-26.24s\n"), ctime (&semds.sem_ctime));
printf ("%-10s %-10s %-10s %-10s %-10s\n",
_("semnum"),_("value"),_("ncount"),_("zcount"),_("pid"));
arg.val = 0;
for (i=0; i< semds.sem_nsems; i++) {
int val, ncnt, zcnt, pid;
val = semctl (semid, i, GETVAL, arg);
ncnt = semctl (semid, i, GETNCNT, arg);
zcnt = semctl (semid, i, GETZCNT, arg);
pid = semctl (semid, i, GETPID, arg);
if (val < 0 || ncnt < 0 || zcnt < 0 || pid < 0)
err(EXIT_FAILURE, _("semctl failed"));
printf ("%-10d %-10d %-10d %-10d %-10d\n",
i, val, ncnt, zcnt, pid);
}
printf ("\n");
return;
}

2
usr.bin/Makefile
View File

@ -13,7 +13,7 @@ SUBDIR= asa \
false find finger flock fold fpr from \
fsplit ftp genassym \
getopt \
head hexdump id indent infocmp join jot \
head hexdump id indent infocmp ipcs join jot \
lam last ldd leave \
lock login logname lorder m4 \
machine make man menuc mesg \

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# $NetBSD: Makefile,v 1.11 2014/06/11 14:57:55 joerg Exp $
PROG= ipcs
.include <bsd.prog.mk>

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.\" $NetBSD: ipcs.1,v 1.20 2014/06/11 14:57:55 joerg Exp $
.\"
.\" Copyright (c) 1994 SigmaSoft, Th. Lockert
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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.
.\"
.Dd June 11, 2014
.Dt IPCS 1
.Os
.Sh NAME
.Nm ipcs
.Nd report System V interprocess communication facilities status
.Sh SYNOPSIS
.Nm
.Op Fl abcmopqstMQST
.Sh DESCRIPTION
The
.Nm
program provides information on System V interprocess communication
(IPC) facilities on the system.
.Pp
The options are as follows:
.Bl -tag -width Ds
.It Fl a
Show the maximum amount of information possible when
displaying active semaphores, message queues,
and shared memory segments.
(This is shorthand for specifying the
.Fl b ,
.Fl c ,
.Fl o ,
.Fl p ,
and
.Fl t
options.)
.It Fl b
Show the maximum allowed sizes for active semaphores, message queues,
and shared memory segments.
The
.Dq maximum allowed size
is the maximum number of bytes in a message on a message queue,
the size of a shared memory segment,
or the number of semaphores in a set of semaphores.
.It Fl c
Show the creator's name and group for active semaphores, message queues,
and shared memory segments.
.It Fl m
Display information about active shared memory segments.
.It Fl o
Show outstanding usage for active message queues,
and shared memory segments.
The
.Dq outstanding usage
is the number of messages in a message queue, or the number
of processes attached to a shared memory segment.
.It Fl p
Show the process ID information for active semaphores, message queues,
and shared memory segments.
The
.Dq process ID information
is the last process to send a message to or receive a message from
a message queue,
the process that created a semaphore, or the last process to attach
or detach a shared memory segment.
.It Fl q
Display information about active message queues.
.It Fl s
Display information about active semaphores.
.It Fl t
Show access times for active semaphores, message queues,
and shared memory segments.
The access times is the time
of the last control operation on an IPC object,
the last send or receive of a message,
the last attach or detach of a shared memory segment,
or the last operation on a semaphore.
.It Fl M
Display system information about shared memory.
.It Fl Q
Display system information about messages queues.
.It Fl S
Display system information about semaphores.
.It Fl T
Display system information about shared memory, message queues
and semaphores.
(This is shorthand for specifying the
.Fl M ,
.Fl Q ,
and
.Fl S
options.)
.El
.Pp
If none of the
.Fl M ,
.Fl m ,
.Fl Q ,
.Fl q ,
.Fl S ,
.Fl s ,
or
.Fl T
options are specified, information about all active IPC facilities is
listed.
.Sh RESTRICTIONS
System data structures may change while
.Nm
is running; the output of
.Nm
is not guaranteed to be consistent.
.Sh SEE ALSO
.Xr ipcrm 1 ,
.Xr shmat 2 ,
.Xr shmctl 2 ,
.Xr shmdt 2 ,
.Xr shmget 2
.Sh AUTHORS
.An Thorsten Lockert Aq Mt tholo@sigmasoft.com
.Sh BUGS
This manual page is woefully incomplete, because it does not
at all attempt to explain the information printed by
.Nm .

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/* $NetBSD: ipcs.c,v 1.43 2014/06/11 14:57:55 joerg Exp $ */
/*-
* Copyright (c) 2000 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Simon Burge.
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
*/
/*
* 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.
*
* 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.
*/
#include <sys/cdefs.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <sys/inttypes.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/shm.h>
#include <sys/msg.h>
#include <err.h>
#include <fcntl.h>
#include <grp.h>
#include <limits.h>
#include <paths.h>
#include <pwd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#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
static int display = 0;
static int option = 0;
static void cvt_time(time_t, char *, size_t);
static char *fmt_perm(u_short);
static void msg_sysctl(void);
static void sem_sysctl(void);
static void shm_sysctl(void);
static void show_msginfo(time_t, time_t, time_t, int, u_int64_t, mode_t,
uid_t, gid_t, uid_t, gid_t, u_int64_t, u_int64_t, u_int64_t, pid_t, pid_t);
static void show_msginfo_hdr(void);
static void show_msgtotal(struct msginfo *);
static void show_seminfo_hdr(void);
static void show_seminfo(time_t, time_t, int, u_int64_t, mode_t, uid_t,
gid_t, uid_t, gid_t, int16_t);
static void show_semtotal(struct seminfo *);
static void show_shminfo(time_t, time_t, time_t, int, u_int64_t, mode_t,
uid_t, gid_t, uid_t, gid_t, u_int32_t, u_int64_t, pid_t, pid_t);
static void show_shminfo_hdr(void);
static void show_shmtotal(struct shminfo *);
static void usage(void) __dead;
static void unconfsem(void);
static void unconfmsg(void);
static void unconfshm(void);
static void
unconfsem(void)
{
warnx("SVID semaphores facility not configured in the system");
}
static void
unconfmsg(void)
{
warnx("SVID messages facility not configured in the system");
}
static void
unconfshm(void)
{
warnx("SVID shared memory facility not configured in the system");
}
static char *
fmt_perm(u_short mode)
{
static char buffer[12];
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]);
}
static void
cvt_time(time_t t, char *buf, size_t buflen)
{
struct tm *tm;
if (t == 0)
(void)strlcpy(buf, "no-entry", buflen);
else {
tm = localtime(&t);
(void)snprintf(buf, buflen, "%2d:%02d:%02d",
tm->tm_hour, tm->tm_min, tm->tm_sec);
}
}
int
main(int argc, char *argv[])
{
int i;
time_t now;
while ((i = getopt(argc, argv, "MmQqSsabcoptT")) != -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':
option |= CREATOR;
break;
case 'o':
option |= OUTSTANDING;
break;
case 'p':
option |= PID;
break;
case 't':
option |= TIME;
break;
default:
usage();
}
if (argc - optind > 0)
usage();
(void)time(&now);
(void)printf("IPC status from <running system> as of %s\n",
/* and extra \n from ctime(3) */
ctime(&now));
if (display == 0)
display = SHMINFO | MSGINFO | SEMINFO;
if (display & (MSGINFO | MSGTOTAL))
msg_sysctl();
if (display & (SHMINFO | SHMTOTAL))
shm_sysctl();
if (display & (SEMINFO | SEMTOTAL))
sem_sysctl();
return 0;
}
static void
show_msgtotal(struct msginfo *msginfo)
{
(void)printf("msginfo:\n");
(void)printf("\tmsgmax: %6d\t(max characters in a message)\n",
msginfo->msgmax);
(void)printf("\tmsgmni: %6d\t(# of message queues)\n",
msginfo->msgmni);
(void)printf("\tmsgmnb: %6d\t(max characters in a message queue)\n",
msginfo->msgmnb);
(void)printf("\tmsgtql: %6d\t(max # of messages in system)\n",
msginfo->msgtql);
(void)printf("\tmsgssz: %6d\t(size of a message segment)\n",
msginfo->msgssz);
(void)printf("\tmsgseg: %6d\t(# of message segments in system)\n\n",
msginfo->msgseg);
}
static void
show_shmtotal(struct shminfo *shminfo)
{
(void)printf("shminfo:\n");
(void)printf("\tshmmax: %" PRIu64 "\t(max shared memory segment size)\n",
shminfo->shmmax);
(void)printf("\tshmmin: %7d\t(min shared memory segment size)\n",
shminfo->shmmin);
(void)printf("\tshmmni: %7d\t(max number of shared memory identifiers)\n",
shminfo->shmmni);
(void)printf("\tshmseg: %7d\t(max shared memory segments per process)\n",
shminfo->shmseg);
(void)printf("\tshmall: %7d\t(max amount of shared memory in pages)\n\n",
shminfo->shmall);
}
static void
show_semtotal(struct seminfo *seminfo)
{
(void)printf("seminfo:\n");
(void)printf("\tsemmap: %6d\t(# of entries in semaphore map)\n",
seminfo->semmap);
(void)printf("\tsemmni: %6d\t(# of semaphore identifiers)\n",
seminfo->semmni);
(void)printf("\tsemmns: %6d\t(# of semaphores in system)\n",
seminfo->semmns);
(void)printf("\tsemmnu: %6d\t(# of undo structures in system)\n",
seminfo->semmnu);
(void)printf("\tsemmsl: %6d\t(max # of semaphores per id)\n",
seminfo->semmsl);
(void)printf("\tsemopm: %6d\t(max # of operations per semop call)\n",
seminfo->semopm);
(void)printf("\tsemume: %6d\t(max # of undo entries per process)\n",
seminfo->semume);
(void)printf("\tsemusz: %6d\t(size in bytes of undo structure)\n",
seminfo->semusz);
(void)printf("\tsemvmx: %6d\t(semaphore maximum value)\n",
seminfo->semvmx);
(void)printf("\tsemaem: %6d\t(adjust on exit max value)\n\n",
seminfo->semaem);
}
static void
show_msginfo_hdr(void)
{
(void)printf("Message Queues:\n");
(void)printf("T ID KEY MODE OWNER GROUP");
if (option & CREATOR)
(void)printf(" CREATOR CGROUP");
if (option & OUTSTANDING)
(void)printf(" CBYTES QNUM");
if (option & BIGGEST)
(void)printf(" QBYTES");
if (option & PID)
(void)printf(" LSPID LRPID");
if (option & TIME)
(void)printf(" STIME RTIME CTIME");
(void)printf("\n");
}
static void
show_msginfo(time_t s_time, time_t r_time, time_t c_time, int ipcid,
u_int64_t key,
mode_t mode, uid_t uid, gid_t gid, uid_t cuid, gid_t cgid,
u_int64_t cbytes, u_int64_t qnum, u_int64_t qbytes, pid_t lspid,
pid_t lrpid)
{
char s_time_buf[100], r_time_buf[100], c_time_buf[100];
if (option & TIME) {
cvt_time(s_time, s_time_buf, sizeof(s_time_buf));
cvt_time(r_time, r_time_buf, sizeof(r_time_buf));
cvt_time(c_time, c_time_buf, sizeof(c_time_buf));
}
(void)printf("q %9d %10lld %s %8s %8s", ipcid, (long long)key, fmt_perm(mode),
user_from_uid(uid, 0), group_from_gid(gid, 0));
if (option & CREATOR)
(void)printf(" %8s %8s", user_from_uid(cuid, 0),
group_from_gid(cgid, 0));
if (option & OUTSTANDING)
(void)printf(" %6lld %5lld", (long long)cbytes, (long long)qnum);
if (option & BIGGEST)
(void)printf(" %6lld", (long long)qbytes);
if (option & PID)
(void)printf(" %5d %5d", lspid, lrpid);
if (option & TIME)
(void)printf(" %s %s %s", s_time_buf, r_time_buf, c_time_buf);
(void)printf("\n");
}
static void
show_shminfo_hdr(void)
{
(void)printf("Shared Memory:\n");
(void)printf("T ID KEY MODE OWNER GROUP");
if (option & CREATOR)
(void)printf(" CREATOR CGROUP");
if (option & OUTSTANDING)
(void)printf(" NATTCH");
if (option & BIGGEST)
(void)printf(" SEGSZ");
if (option & PID)
(void)printf(" CPID LPID");
if (option & TIME)
(void)printf(" ATIME DTIME CTIME");
(void)printf("\n");
}
static void
show_shminfo(time_t atime, time_t dtime, time_t c_time, int ipcid, u_int64_t key,
mode_t mode, uid_t uid, gid_t gid, uid_t cuid, gid_t cgid,
u_int32_t nattch, u_int64_t segsz, pid_t cpid, pid_t lpid)
{
char atime_buf[100], dtime_buf[100], c_time_buf[100];
if (option & TIME) {
cvt_time(atime, atime_buf, sizeof(atime_buf));
cvt_time(dtime, dtime_buf, sizeof(dtime_buf));
cvt_time(c_time, c_time_buf, sizeof(c_time_buf));
}
(void)printf("m %9d %10lld %s %8s %8s", ipcid, (long long)key, fmt_perm(mode),
user_from_uid(uid, 0), group_from_gid(gid, 0));
if (option & CREATOR)
(void)printf(" %8s %8s", user_from_uid(cuid, 0),
group_from_gid(cgid, 0));
if (option & OUTSTANDING)
(void)printf(" %6d", nattch);
if (option & BIGGEST)
(void)printf(" %7llu", (long long)segsz);
if (option & PID)
(void)printf(" %5d %5d", cpid, lpid);
if (option & TIME)
(void)printf(" %s %s %s",
atime_buf,
dtime_buf,
c_time_buf);
(void)printf("\n");
}
static void
show_seminfo_hdr(void)
{
(void)printf("Semaphores:\n");
(void)printf("T ID KEY MODE OWNER GROUP");
if (option & CREATOR)
(void)printf(" CREATOR CGROUP");
if (option & BIGGEST)
(void)printf(" NSEMS");
if (option & TIME)
(void)printf(" OTIME CTIME");
(void)printf("\n");
}
static void
show_seminfo(time_t otime, time_t c_time, int ipcid, u_int64_t key, mode_t mode,
uid_t uid, gid_t gid, uid_t cuid, gid_t cgid, int16_t nsems)
{
char c_time_buf[100], otime_buf[100];
if (option & TIME) {
cvt_time(otime, otime_buf, sizeof(otime_buf));
cvt_time(c_time, c_time_buf, sizeof(c_time_buf));
}
(void)printf("s %9d %10lld %s %8s %8s", ipcid, (long long)key, fmt_perm(mode),
user_from_uid(uid, 0), group_from_gid(gid, 0));
if (option & CREATOR)
(void)printf(" %8s %8s", user_from_uid(cuid, 0),
group_from_gid(cgid, 0));
if (option & BIGGEST)
(void)printf(" %5d", nsems);
if (option & TIME)
(void)printf(" %s %s", otime_buf, c_time_buf);
(void)printf("\n");
}
static void
msg_sysctl(void)
{
struct msg_sysctl_info *msgsi;
void *buf;
int mib[4];
size_t len;
int i, valid;
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_MSG;
len = sizeof(valid);
if (sysctl(mib, 3, &valid, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_MSG)");
return;
}
if (!valid) {
unconfmsg();
return;
}
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_INFO;
mib[3] = KERN_SYSVIPC_MSG_INFO;
if (!(display & MSGINFO)) {
/* totals only */
len = sizeof(struct msginfo);
} else {
if (sysctl(mib, 4, NULL, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_MSG_INFO)");
return;
}
}
if ((buf = malloc(len)) == NULL)
err(1, "malloc");
msgsi = (struct msg_sysctl_info *)buf;
if (sysctl(mib, 4, msgsi, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_MSG_INFO)");
goto done;
}
if (display & MSGTOTAL)
show_msgtotal(&msgsi->msginfo);
if (display & MSGINFO) {
show_msginfo_hdr();
for (i = 0; i < msgsi->msginfo.msgmni; i++) {
struct msgid_ds_sysctl *msqptr = &msgsi->msgids[i];
if (msqptr->msg_qbytes != 0)
show_msginfo(msqptr->msg_stime,
msqptr->msg_rtime,
msqptr->msg_ctime,
IXSEQ_TO_IPCID(i, msqptr->msg_perm),
msqptr->msg_perm._key,
msqptr->msg_perm.mode,
msqptr->msg_perm.uid,
msqptr->msg_perm.gid,
msqptr->msg_perm.cuid,
msqptr->msg_perm.cgid,
msqptr->_msg_cbytes,
msqptr->msg_qnum,
msqptr->msg_qbytes,
msqptr->msg_lspid,
msqptr->msg_lrpid);
}
(void)printf("\n");
}
done:
free(buf);
}
static void
shm_sysctl(void)
{
struct shm_sysctl_info *shmsi;
void *buf;
int mib[4];
size_t len;
uint32_t i;
long valid;
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_SHM;
len = sizeof(valid);
if (sysctl(mib, 3, &valid, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SHM)");
return;
}
if (!valid) {
unconfshm();
return;
}
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_INFO;
mib[3] = KERN_SYSVIPC_SHM_INFO;
if (!(display & SHMINFO)) {
/* totals only */
len = sizeof(struct shminfo);
} else {
if (sysctl(mib, 4, NULL, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SHM_INFO)");
return;
}
}
if ((buf = malloc(len)) == NULL)
err(1, "malloc");
shmsi = (struct shm_sysctl_info *)buf;
if (sysctl(mib, 4, shmsi, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SHM_INFO)");
goto done;
}
if (display & SHMTOTAL)
show_shmtotal(&shmsi->shminfo);
if (display & SHMINFO) {
show_shminfo_hdr();
for (i = 0; i < shmsi->shminfo.shmmni; i++) {
struct shmid_ds_sysctl *shmptr = &shmsi->shmids[i];
if (shmptr->shm_perm.mode & 0x0800)
show_shminfo(shmptr->shm_atime,
shmptr->shm_dtime,
shmptr->shm_ctime,
IXSEQ_TO_IPCID(i, shmptr->shm_perm),
shmptr->shm_perm._key,
shmptr->shm_perm.mode,
shmptr->shm_perm.uid,
shmptr->shm_perm.gid,
shmptr->shm_perm.cuid,
shmptr->shm_perm.cgid,
shmptr->shm_nattch,
shmptr->shm_segsz,
shmptr->shm_cpid,
shmptr->shm_lpid);
}
(void)printf("\n");
}
done:
free(buf);
}
static void
sem_sysctl(void)
{
struct sem_sysctl_info *semsi;
void *buf;
int mib[4];
size_t len;
int i, valid;
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_SEM;
len = sizeof(valid);
if (sysctl(mib, 3, &valid, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SEM)");
return;
}
if (!valid) {
unconfsem();
return;
}
mib[0] = CTL_KERN;
mib[1] = KERN_SYSVIPC;
mib[2] = KERN_SYSVIPC_INFO;
mib[3] = KERN_SYSVIPC_SEM_INFO;
if (!(display & SEMINFO)) {
/* totals only */
len = sizeof(struct seminfo);
} else {
if (sysctl(mib, 4, NULL, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SEM_INFO)");
return;
}
}
if ((buf = malloc(len)) == NULL)
err(1, "malloc");
semsi = (struct sem_sysctl_info *)buf;
if (sysctl(mib, 4, semsi, &len, NULL, 0) < 0) {
warn("sysctl(KERN_SYSVIPC_SEM_INFO)");
goto done;
}
if (display & SEMTOTAL)
show_semtotal(&semsi->seminfo);
if (display & SEMINFO) {
show_seminfo_hdr();
for (i = 0; i < semsi->seminfo.semmni; i++) {
struct semid_ds_sysctl *semaptr = &semsi->semids[i];
if ((semaptr->sem_perm.mode & SEM_ALLOC) != 0)
show_seminfo(semaptr->sem_otime,
semaptr->sem_ctime,
IXSEQ_TO_IPCID(i, semaptr->sem_perm),
semaptr->sem_perm._key,
semaptr->sem_perm.mode,
semaptr->sem_perm.uid,
semaptr->sem_perm.gid,
semaptr->sem_perm.cuid,
semaptr->sem_perm.cgid,
semaptr->sem_nsems);
}
(void)printf("\n");
}
done:
free(buf);
}
static void
usage(void)
{
(void)fprintf(stderr,
"Usage: %s [-abcmopqstMQST]\n",
getprogname());
exit(1);
}