* Makefile.in: Add rules to build ipcrm and ipcs.

	* ipcrm.c: New file.
	* ipcs.c: New file.

4 files changed, 1061 insertions, 1 deletions

diff --git a/winsup/utils/ChangeLog b/winsup/utils/ChangeLog
index 3f4a71250..a4dc2a7b9 100644
--- a/winsup/utils/ChangeLog
+++ b/winsup/utils/ChangeLog
@@ -1,3 +1,9 @@
+2003-11-19  Corinna Vinschen  <corinna@vinschen.de>
+
+	* Makefile.in: Add rules to build ipcrm and ipcs.
+	* ipcrm.c: New file.
+	* ipcs.c: New file.
+
 2003-11-14  Corinna Vinschen  <corinna@vinschen.de>
 
 	* mkgroup.c: Avoid compiler warnings throughout.
diff --git a/winsup/utils/Makefile.in b/winsup/utils/Makefile.in
index ba7b0d63f..c0a0c1470 100644
--- a/winsup/utils/Makefile.in
+++ b/winsup/utils/Makefile.in
@@ -74,7 +74,7 @@ MINGW_CXX:=${patsubst %/cygwin/include,%/mingw/include,${filter-out -I$(newlib_s
 
 PROGS:=	cygcheck.exe cygpath.exe getfacl.exe kill.exe mkgroup.exe \
 	mkpasswd.exe mount.exe passwd.exe ps.exe regtool.exe setfacl.exe \
-	ssp.exe strace.exe umount.exe
+	ssp.exe strace.exe umount.exe ipcrm.exe ipcs.exe
 
 CLEAN_PROGS:=$(PROGS)
 ifndef build_dumper
diff --git a/winsup/utils/ipcrm.c b/winsup/utils/ipcrm.c
new file mode 100644
index 000000000..bc17b6ad4
--- /dev/null
+++ b/winsup/utils/ipcrm.c
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 1994 Adam Glass
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *	This product includes software developed by Adam Glass.
+ * 4. The name of the Author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL Adam Glass BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+#ifndef __FBSDID
+#define __FBSDID(s)	const char version[] = (s)
+#endif
+__FBSDID("$FreeBSD: /repoman/r/ncvs/src/usr.bin/ipcrm/ipcrm.c,v 1.11 2002/09/04 23:29:02 dwmalone Exp $");
+
+#include <ctype.h>
+#include <err.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <sys/types.h>
+#ifndef _KERNEL
+#define _KERNEL 1
+#endif
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+
+#ifdef __GNUC__
+#define __unused __attribute__((unused))
+#endif
+
+#define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))
+#define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \
+	(x == 'M' ? "shared memory segment" : "semaphore"))
+
+int signaled;
+
+void usage(void);
+int msgrm(key_t, int);
+int shmrm(key_t, int);
+int semrm(key_t, int);
+void not_configured(int);
+
+void usage(void)
+{
+	fprintf(stderr, "%s\n%s\n",
+		"usage: ipcrm [-q msqid] [-m shmid] [-s semid]",
+		"             [-Q msgkey] [-M shmkey] [-S semkey] ...");
+	exit(1);
+}
+
+int msgrm(key_t key, int id)
+{
+    if (key) {
+	id = msgget(key, 0);
+	if (id == -1)
+	    return -1;
+    }
+    return msgctl(id, IPC_RMID, NULL);
+}
+
+int shmrm(key_t key, int id)
+{
+    if (key) {
+	id = shmget(key, 0, 0);
+	if (id == -1)
+	    return -1;
+    }
+    return shmctl(id, IPC_RMID, NULL);
+}
+
+int semrm(key_t key, int id)
+{
+    union semun arg;
+
+    if (key) {
+	id = semget(key, 0, 0);
+	if (id == -1)
+	    return -1;
+    }
+    return semctl(id, 0, IPC_RMID, arg);
+}
+
+void not_configured(int signo __unused)
+{
+    signaled++;
+}
+
+int main(int argc, char *argv[])
+{
+    int c, result, errflg, target_id;
+    key_t target_key;
+
+    errflg = 0;
+    signal(SIGSYS, not_configured);
+    while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) {
+
+	signaled = 0;
+	switch (c) {
+	case 'q':
+	case 'm':
+	case 's':
+	    target_id = atoi(optarg);
+	    if (c == 'q')
+		result = msgrm(0, target_id);
+	    else if (c == 'm')
+		result = shmrm(0, target_id);
+	    else
+		result = semrm(0, target_id);
+	    if (result < 0) {
+		errflg++;
+		if (!signaled)
+		    warn("%sid(%d): ", IPC_TO_STR(toupper(c)), target_id);
+		else
+		    warnx("%ss are not configured in the running kernel",
+			  IPC_TO_STRING(toupper(c)));
+	    }
+	    break;
+	case 'Q':
+	case 'M':
+	case 'S':
+	    target_key = strtoull(optarg, NULL, 10);
+	    if (target_key == IPC_PRIVATE) {
+		warnx("can't remove private %ss", IPC_TO_STRING(c));
+		continue;
+	    }
+	    if (c == 'Q')
+		result = msgrm(target_key, 0);
+	    else if (c == 'M')
+		result = shmrm(target_key, 0);
+	    else
+		result = semrm(target_key, 0);
+	    if (result < 0) {
+		errflg++;
+		if (!signaled)
+		    warn("%ss(%lld): ", IPC_TO_STR(c), target_key);
+		else
+		    warnx("%ss are not configured in the running kernel",
+			  IPC_TO_STRING(c));
+	    }
+	    break;
+	case ':':
+	    fprintf(stderr, "option -%c requires an argument\n", optopt);
+	    usage();
+	case '?':
+	    fprintf(stderr, "unrecognized option: -%c\n", optopt);
+	    usage();
+	}
+    }
+
+    if (optind != argc) {
+	    fprintf(stderr, "unknown argument: %s\n", argv[optind]);
+	    usage();
+    }
+    exit(errflg);
+}
+
diff --git a/winsup/utils/ipcs.c b/winsup/utils/ipcs.c
new file mode 100644
index 000000000..229330b99
--- /dev/null
+++ b/winsup/utils/ipcs.c
@@ -0,0 +1,872 @@
+/*
+ * 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.
+ */
+
+#include <sys/cdefs.h>
+#ifndef __FBSDID
+#define __FBSDID(s)	const char version[] = (s)
+#endif
+__FBSDID("$FreeBSD: /repoman/r/ncvs/src/usr.bin/ipcs/ipcs.c,v 1.22 2003/10/30 16:52:14 iwasaki Exp $");
+
+#include <assert.h>
+#include <err.h>
+#include <fcntl.h>
+#include <grp.h>
+#ifndef __CYGWIN__
+#include <kvm.h>
+#include <nlist.h>
+#endif /* __CYGWIN__ */
+#include <limits.h>
+#include <paths.h>
+#include <pwd.h>
+#ifdef __CYGWIN__
+#include <grp.h>
+#endif /* __CYGWIN__ */
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/time.h>
+#ifndef __CYGWIN__
+#include <sys/proc.h>
+#include <sys/sysctl.h>
+#endif /* __CYGWIN__ */
+#define _KERNEL
+#include <sys/ipc.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/msg.h>
+
+/* SysCtlGatherStruct structure. */
+struct scgs_vector {
+	const char *sysctl;
+	off_t offset;
+	size_t size;
+};
+
+int	use_sysctl = 1;
+struct semid_ds	*sema;
+struct seminfo	seminfo;
+struct msginfo	msginfo;
+struct msqid_ds	*msqids;
+struct shminfo	shminfo;
+struct shmid_ds	*shmsegs;
+
+char   *fmt_perm(u_short);
+void	cvt_time(time_t, char *);
+void	sysctlgatherstruct(void *addr, size_t size, struct scgs_vector *vec);
+void	kget(int idx, void *addr, size_t size);
+void	usage(void);
+#ifdef __CYGWIN__
+void help() __attribute__ ((noreturn));
+#endif /* __CYGWIN__ */
+
+#ifdef __CYGWIN__
+#define _POSIX2_LINE_MAX 255
+typedef int kvm_t;
+#define kvm_openfiles(a,b,c,d,e) NULL
+#define kvm_nlist(a,b) -1
+#define kvm_close(a)
+#define kvm_read(a,b,c,d) 0
+#define kvm_geterr(a) ""
+#define sysctlbyname(a,b,c,d,e) -1
+
+struct nlist {
+  const char *n_name;
+  int n_type;
+  int n_value;
+};
+#endif /* __CYGWIN__ */
+
+static struct nlist symbols[] = {
+	{"sema"},
+#define X_SEMA		0
+	{"seminfo"},
+#define X_SEMINFO	1
+	{"msginfo"},
+#define X_MSGINFO	2
+	{"msqids"},
+#define X_MSQIDS	3
+	{"shminfo"},
+#define X_SHMINFO	4
+	{"shmsegs"},
+#define X_SHMSEGS	5
+#ifdef __CYGWIN__
+	{"msgstat"},
+#define X_MSGSTAT	6
+	{"semstat"},
+#define X_SEMSTAT	7
+	{"shmstat"},
+#define X_SHMSTAT	8
+#endif /* __CYGWIN__ */
+	{NULL}
+};
+
+#define	SHMINFO_XVEC				\
+X(shmmax, sizeof(int))				\
+X(shmmin, sizeof(int))				\
+X(shmmni, sizeof(int))				\
+X(shmseg, sizeof(int))				\
+X(shmall, sizeof(int))
+
+#define	SEMINFO_XVEC				\
+X(semmap, sizeof(int))				\
+X(semmni, sizeof(int))				\
+X(semmns, sizeof(int))				\
+X(semmnu, sizeof(int))				\
+X(semmsl, sizeof(int))				\
+X(semopm, sizeof(int))				\
+X(semume, sizeof(int))				\
+X(semusz, sizeof(int))				\
+X(semvmx, sizeof(int))				\
+X(semaem, sizeof(int))
+
+#define	MSGINFO_XVEC				\
+X(msgmax, sizeof(int))				\
+X(msgmni, sizeof(int))				\
+X(msgmnb, sizeof(int))				\
+X(msgtql, sizeof(int))				\
+X(msgssz, sizeof(int))				\
+X(msgseg, sizeof(int))
+
+#define	X(a, b)	{ "kern.ipc." #a, offsetof(TYPEC, a), (b) },
+#define	TYPEC	struct shminfo
+struct scgs_vector shminfo_scgsv[] = { SHMINFO_XVEC { NULL } };
+#undef	TYPEC
+#define	TYPEC	struct seminfo
+struct scgs_vector seminfo_scgsv[] = { SEMINFO_XVEC { NULL } };
+#undef	TYPEC
+#define	TYPEC	struct msginfo
+struct scgs_vector msginfo_scgsv[] = { MSGINFO_XVEC { NULL } };
+#undef	TYPEC
+#undef	X
+
+static kvm_t *kd;
+
+#ifdef __CYGWIN__
+const char *
+user_from_uid (uid_t uid, uid_t dummy)
+{
+  struct passwd *pwd = getpwuid (uid);
+  return pwd ? pwd->pw_name : "???";
+}
+
+const char *
+group_from_gid (gid_t gid, gid_t dummy)
+{
+  struct group *grp = getgrgid (gid);
+  return grp ? grp->gr_name : "???";
+}
+#endif /* __CYGWIN__ */
+
+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
+#ifdef __CYGWIN__
+#define STATUS		32
+#endif /* __CYGWIN__ */
+
+int
+main(argc, argv)
+	int     argc;
+	char   *argv[];
+{
+	int     display = SHMINFO | MSGINFO | SEMINFO;
+	int     option = 0;
+	char   *core = NULL, *namelist = NULL;
+	char	kvmoferr[_POSIX2_LINE_MAX];  /* Error buf for kvm_openfiles. */
+	int     i;
+
+#ifdef __CYGWIN__
+	while ((i = getopt(argc, argv, "MmQqSsabchoptTu")) != -1)
+#else
+	while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTy")) != -1)
+#endif /* __CYGWIN__ */
+		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;
+#ifndef __CYGWIN__
+		case 'C':
+			core = optarg;
+			break;
+#endif /* __CYGWIN__ */
+		case 'c':
+			option |= CREATOR;
+			break;
+#ifndef __CYGWIN__
+		case 'N':
+			namelist = optarg;
+			break;
+#endif /* __CYGWIN__ */
+		case 'o':
+			option |= OUTSTANDING;
+			break;
+		case 'p':
+			option |= PID;
+			break;
+		case 't':
+			option |= TIME;
+			break;
+#ifdef __CYGWIN__
+		case 'h':
+			help();
+		case 'u':
+			option |= STATUS;
+			break;
+#endif /* __CYGWIN__ */
+#ifndef __CYGWIN__
+		case 'y':
+			use_sysctl = 0;
+			break;
+#endif /* __CYGWIN__ */
+		default:
+			usage();
+		}
+
+	/*
+	 * If paths to the exec file or core file were specified, we
+	 * aren't operating on the running kernel, so we can't use
+	 * sysctl.
+	 */
+	if (namelist != NULL || core != NULL)
+		use_sysctl = 0;
+
+	if (!use_sysctl) {
+		kd = kvm_openfiles(namelist, core, NULL, O_RDONLY, kvmoferr);
+		if (kd == NULL)
+			errx(1, "kvm_openfiles: %s", kvmoferr);
+		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);
+#endif
+			break;
+		}
+	}
+
+	kget(X_MSGINFO, &msginfo, sizeof(msginfo));
+	if ((display & (MSGINFO | MSGTOTAL))) {
+		if (display & MSGTOTAL) {
+			printf("msginfo:\n");
+			printf("\tmsgmax: %8ld\t(max characters in a message)\n",
+			    msginfo.msgmax);
+			printf("\tmsgmni: %8ld\t(# of message queues)\n",
+			    msginfo.msgmni);
+			printf("\tmsgmnb: %8ld\t(max characters in a message queue)\n",
+			    msginfo.msgmnb);
+			printf("\tmsgtql: %8ld\t(max # of messages in system)\n",
+			    msginfo.msgtql);
+			printf("\tmsgssz: %8ld\t(size of a message segment)\n",
+			    msginfo.msgssz);
+			printf("\tmsgseg: %8ld\t(# of message segments in system)\n\n",
+			    msginfo.msgseg);
+		}
+		if (display & MSGINFO) {
+			struct msqid_ds *xmsqids;
+			size_t xmsqids_len;
+
+
+			xmsqids_len = sizeof(struct msqid_ds) * msginfo.msgmni;
+			xmsqids = malloc(xmsqids_len);
+			kget(X_MSQIDS, xmsqids, xmsqids_len);
+
+			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 %20llu %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(" %6lu %6lu",
+						    msqptr->msg_cbytes,
+						    msqptr->msg_qnum);
+
+					if (option & BIGGEST)
+						printf(" %6lu",
+						    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");
+		}
+#ifdef __CYGWIN__
+		if (option & STATUS) {
+			struct msg_info msg_info;
+			kget(X_MSGSTAT, &msg_info, sizeof msg_info);
+			printf("Message Queue Usage:\n");
+			printf("\tmsg_ids: %7ld\t(no. of allocated queues)\n",
+			    msg_info.msg_ids);
+			printf("\tmsg_num: %7ld\t(no. of messages in system)\n",
+			    msg_info.msg_num);
+			printf("\tmsg_tot: %7ld\t(size in bytes of messages in system)\n",
+			    msg_info.msg_tot);
+			printf("\n");
+		}
+#endif /* __CYGWIN__ */
+	} else
+		if (display & (MSGINFO | MSGTOTAL)) {
+			fprintf(stderr,
+			    "SVID messages facility not configured in the system\n");
+		}
+
+	kget(X_SHMINFO, &shminfo, sizeof(shminfo));
+	if ((display & (SHMINFO | SHMTOTAL))) {
+		if (display & SHMTOTAL) {
+			printf("shminfo:\n");
+			printf("\tshmmax: %8ld\t(max shared memory segment size)\n",
+			    shminfo.shmmax);
+			printf("\tshmmin: %8ld\t(min shared memory segment size)\n",
+			    shminfo.shmmin);
+			printf("\tshmmni: %8ld\t(max number of shared memory identifiers)\n",
+			    shminfo.shmmni);
+			printf("\tshmseg: %8ld\t(max shared memory segments per process)\n",
+			    shminfo.shmseg);
+			printf("\tshmall: %8ld\t(max amount of shared memory in pages)\n\n",
+			    shminfo.shmall);
+		}
+		if (display & SHMINFO) {
+			struct shmid_ds *xshmids;
+			size_t xshmids_len;
+
+			xshmids_len = sizeof(struct shmid_ds) * shminfo.shmmni;
+			xshmids = malloc(xshmids_len);
+			kget(X_SHMSEGS, xshmids, xshmids_len);
+
+			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 %20llu %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");
+		}
+#ifdef __CYGWIN__
+		if (option & STATUS) {
+			struct shm_info shm_info;
+			kget(X_SHMSTAT, &shm_info, sizeof shm_info);
+			printf("Shared Memory Usage:\n");
+			printf("\tshm_ids:  %7ld\t(no. of allocated segments)\n",
+			    shm_info.shm_ids);
+			printf("\tshm_tot:  %7ld\t(size in bytes of allocated segments)\n",
+			    shm_info.shm_tot);
+			printf("\tshm_atts: %7ld\t(no. of attached segments in system)\n",
+			    shm_info.shm_atts);
+			printf("\n");
+		}
+#endif /* __CYGWIN__ */
+	} else
+		if (display & (SHMINFO | SHMTOTAL)) {
+			fprintf(stderr,
+			    "SVID shared memory facility not configured in the system\n");
+		}
+
+	kget(X_SEMINFO, &seminfo, sizeof(seminfo));
+	if ((display & (SEMINFO | SEMTOTAL))) {
+		struct semid_ds *xsema;
+		size_t xsema_len;
+
+		if (display & SEMTOTAL) {
+			printf("seminfo:\n");
+			printf("\tsemmap: %8ld\t(# of entries in semaphore map)\n",
+			    seminfo.semmap);
+			printf("\tsemmni: %8ld\t(# of semaphore identifiers)\n",
+			    seminfo.semmni);
+			printf("\tsemmns: %8ld\t(# of semaphores in system)\n",
+			    seminfo.semmns);
+			printf("\tsemmnu: %8ld\t(# of undo structures in system)\n",
+			    seminfo.semmnu);
+			printf("\tsemmsl: %8ld\t(max # of semaphores per id)\n",
+			    seminfo.semmsl);
+			printf("\tsemopm: %8ld\t(max # of operations per semop call)\n",
+			    seminfo.semopm);
+			printf("\tsemume: %8ld\t(max # of undo entries per process)\n",
+			    seminfo.semume);
+			printf("\tsemusz: %8ld\t(size in bytes of undo structure)\n",
+			    seminfo.semusz);
+			printf("\tsemvmx: %8ld\t(semaphore maximum value)\n",
+			    seminfo.semvmx);
+			printf("\tsemaem: %8ld\t(adjust on exit max value)\n\n",
+			    seminfo.semaem);
+		}
+		if (display & SEMINFO) {
+			xsema_len = sizeof(struct semid_ds) * seminfo.semmni;
+			xsema = malloc(xsema_len);
+			kget(X_SEMA, xsema, xsema_len);
+
+			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 %20llu %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");
+				}
+			}
+
+			printf("\n");
+		}
+#ifdef __CYGWIN__
+		if (option & STATUS) {
+			struct sem_info sem_info;
+			kget(X_SEMSTAT, &sem_info, sizeof sem_info);
+			printf("Semaphore Usage:\n");
+			printf("\tsem_ids: %7ld\t(no. of allocated semaphore sets)\n",
+			    sem_info.sem_ids);
+			printf("\tsem_num: %7ld\t(no. of allocated semaphores)\n",
+			    sem_info.sem_num);
+			printf("\n");
+		}
+#endif /* __CYGWIN__ */
+	} 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(addr, size, vecarr)
+	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)
+			errx(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(idx, addr, size)
+	int idx;
+	void *addr;
+	size_t size;
+{
+	const 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" };
+
+#ifndef __CYGWIN__
+	assert((unsigned)idx <= sizeof(sym2sysctl) / sizeof(*sym2sysctl));
+#endif /* __CYGWIN__ */
+#ifdef __CYGWIN__
+        if (1) {
+		union semun su;
+		switch (idx) {
+		case X_MSGINFO:
+			if (msgctl(0, IPC_INFO, (struct msqid_ds *)addr) < 0)
+			  err(1, "msgctl");
+			break;
+		case X_SEMINFO:
+			su.buf = (struct semid_ds *)addr;
+			if (semctl(0, 0, IPC_INFO, su) < 0)
+			  err(1, "semctl");
+			break;
+			break;
+		case X_SHMINFO:
+			if (shmctl(0, IPC_INFO, (struct shmid_ds *)addr) < 0)
+			  err(1, "shmctl");
+			break;
+		case X_MSQIDS:
+			if (msgctl(size / sizeof(struct msqid_ds), IPC_INFO,
+				   (struct msqid_ds *)addr) < 0)
+			  err(1, "msgctl");
+			break;
+		case X_SEMA:
+			su.buf = (struct semid_ds *)addr;
+			if (semctl(size / sizeof(struct semid_ds), 0,
+				   IPC_INFO, su) < 0)
+			  err(1, "semctl");
+			break;
+		case X_SHMSEGS:
+			if (shmctl(size / sizeof(struct shmid_ds), IPC_INFO,
+				   (struct shmid_ds *)addr) < 0)
+			  err(1, "shmctl");
+			break;
+		case X_MSGSTAT:
+			if (msgctl(0, MSG_INFO, (struct msqid_ds *)addr) < 0)
+			  err(1, "msgctl");
+			break;
+		case X_SEMSTAT:
+			su.buf = (struct semid_ds *)addr;
+			if (semctl(0, 0, SEM_INFO, su) < 0)
+			  err(1, "semctl");
+			break;
+			break;
+		case X_SHMSTAT:
+			if (shmctl(0, SHM_INFO, (struct shmid_ds *)addr) < 0)
+			  err(1, "shmctl");
+			break;
+		}
+	} else
+#endif /* __CYGWIN__ */
+	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 retreieve 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;
+		}
+	}
+}
+
+void
+usage()
+{
+
+	fprintf(stderr,
+#ifdef __CYGWIN__
+	    "usage: ipcs [-abchmopqstuMQST]\n"
+	    "Try `ipcs -h' for more information.\n");
+#else
+	    "usage: ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist]\n");
+#endif /* __CYGWIN__ */
+	exit(1);
+}
+
+#ifdef __CYGWIN__
+void
+help()
+{	puts(
+"usage: ipcs [-abchmopqstuMQST]\n"
+"ipcs prints information for IPC resources for which you have read access.\n"
+"  -a   Show the maximum amount of information possible when displaying\n"
+"       active semaphores, message queues and shared memory segments\n"
+"       (This is shorthand for specifying -bcopt).\n"
+"  -b   Show the maximum allowed sizes for active semaphores, message queues\n"
+"       and shared memory segments.  The maximum allowed size is the maximum\n"
+"       number of bytes in a message on a message queue, the size of a shared\n"
+"       memory segment, or the number of semaphores in a set of semaphores.\n"
+"  -c   Show the creator's name and group for active semaphores, message\n"
+"       queues, and shared memory segments.\n"
+"  -h   This help.\n"
+"  -m   Display information about active shared memory segments.\n"
+"  -o   Show outstanding usage for active message queues and shared memory\n"
+"       segments.  The outstanding usage is the number of messages in a\n"
+"       message queue, or the number of processes attached to a shared memory\n"
+"       segment.\n"
+"  -p   Show the process ID information for active semaphores, message queues\n"
+"       and shared memory segments.  The process ID information is the last\n"
+"       process to send a message to or receive a message from a message\n"
+"       queue, the process that created a semaphore, or the last process to\n"
+"       attach or detach a shared memory segment.\n"
+"  -q   Display information about active message queues.\n"
+"  -s   Display information about active semaphores.\n"
+"  -t   Show access times for active semaphores, message queues and shared\n"
+"  -u   Show system wide usage of IPC resources.  This information is added\n"
+"       as a list after the appropriate shared memory, messages queue or\n"
+"       semaphore information output\n"
+"  -M   Display system information about shared memory.\n"
+"  -Q   Display system information about messages queues.\n"
+"  -S   Display system information about semaphores.\n"
+"  -T   Display system information about shared memory, message queues and\n"
+"       semaphores.\n");
+	exit(0);
+}
+#endif /* __CYGWIN__ */