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-rw-r--r--usr.bin/ipcs/Makefile7
-rw-r--r--usr.bin/ipcs/ipcs.1176
-rw-r--r--usr.bin/ipcs/ipcs.c690
3 files changed, 873 insertions, 0 deletions
diff --git a/usr.bin/ipcs/Makefile b/usr.bin/ipcs/Makefile
new file mode 100644
index 000000000000..af767776af9a
--- /dev/null
+++ b/usr.bin/ipcs/Makefile
@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+PROG= ipcs
+DPADD= ${LIBKVM}
+LDADD= -lkvm
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/ipcs/ipcs.1 b/usr.bin/ipcs/ipcs.1
new file mode 100644
index 000000000000..5d32d2c2e721
--- /dev/null
+++ b/usr.bin/ipcs/ipcs.1
@@ -0,0 +1,176 @@
+.\"
+.\" 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.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by SigmaSoft, Th. Lockert.
+.\" 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 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.
+.\"
+.\" $FreeBSD$
+.\"
+.Dd March 24, 2004
+.Dt "IPCS" 1
+.Os
+.Sh NAME
+.Nm ipcs
+.Nd report System V interprocess communication facilities status
+.Sh SYNOPSIS
+.Nm
+.Op Fl abcmopqstMQSTy
+.Op Fl C Ar core
+.Op Fl N Ar system
+.Op Fl u Ar user
+.Sh DESCRIPTION
+The
+.Nm
+utility 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 C Ar core
+Extract values associated with the name list from the specified
+core instead of the default
+.Pa /dev/kmem .
+Implies
+.Fl y .
+.It Fl M
+Display system information about shared memory.
+.It Fl N Ar system
+Extract the name list from the specified system instead of the
+default
+.Pa /boot/kernel/kernel .
+Implies
+.Fl y .
+.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.
+.It Fl y
+Use the
+.Xr kvm 3
+interface instead of the
+.Xr sysctl 3
+interface to extract the required information.
+If
+.Nm
+is to operate on the running system,
+using
+.Xr kvm 3
+will require read privileges to
+.Pa /dev/kmem .
+.It Fl u Ar user
+Display information about IPC mechanisms owned by
+.Pa user .
+User specification can be in the form of a numeric UID or
+a login name.
+.El
+.Pp
+If none of the
+.Fl M ,
+.Fl m ,
+.Fl Q ,
+.Fl q ,
+.Fl S ,
+or
+.Fl s
+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 BUGS
+This manual page is woefully incomplete, because it does not
+at all attempt to explain the information printed by
+.Nm .
+.Sh FILES
+.Bl -tag -width /boot/kernel/kernel -compact
+.It Pa /dev/kmem
+default kernel memory
+.It Pa /boot/kernel/kernel
+default system name list
+.El
+.Sh SEE ALSO
+.Xr ipcrm 1
+.Sh AUTHORS
+.An Thorsten Lockert Aq tholo@sigmasoft.com
diff --git a/usr.bin/ipcs/ipcs.c b/usr.bin/ipcs/ipcs.c
new file mode 100644
index 000000000000..ce2a759468b5
--- /dev/null
+++ b/usr.bin/ipcs/ipcs.c
@@ -0,0 +1,690 @@
+/*
+ * 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>
+__FBSDID("$FreeBSD$");
+
+#include <assert.h>
+#include <err.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <kvm.h>
+#include <nlist.h>
+#include <limits.h>
+#include <paths.h>
+#include <pwd.h>
+#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>
+#include <sys/proc.h>
+#include <sys/sysctl.h>
+#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);
+uid_t user2uid(char *username);
+
+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
+ {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;
+
+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, *user = NULL, *namelist = NULL;
+ char kvmoferr[_POSIX2_LINE_MAX]; /* Error buf for kvm_openfiles. */
+ int i;
+ uid_t uid;
+
+ while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTu:y")) != -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;
+ case 'y':
+ use_sysctl = 0;
+ break;
+ case 'u':
+ user = optarg;
+ uid = user2uid(user);
+ break;
+ 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: %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;
+ 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];
+
+ if (user)
+ if (uid != msqptr->msg_perm.uid)
+ continue;
+ 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),
+ (int)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");
+ }
+ } 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: %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;
+ 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];
+
+ if (user)
+ if (uid != shmptr->shm_perm.uid)
+ continue;
+ 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),
+ (int)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");
+ }
+
+ 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: %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) {
+ 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];
+
+ if (user)
+ if (uid != semaptr->sem_perm.uid)
+ continue;
+ 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),
+ (int)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");
+ }
+ } 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;
+{
+ char *symn; /* symbol name */
+ size_t tsiz;
+ int rv;
+ unsigned long kaddr;
+ const char *sym2sysctl[] = { /* symbol to sysctl name table */
+ "kern.ipc.sema",
+ "kern.ipc.seminfo",
+ "kern.ipc.msginfo",
+ "kern.ipc.msqids",
+ "kern.ipc.shminfo",
+ "kern.ipc.shmsegs" };
+
+ assert((unsigned)idx <= sizeof(sym2sysctl) / sizeof(*sym2sysctl));
+ if (!use_sysctl) {
+ symn = symbols[idx].n_name;
+ if (*symn == '_')
+ symn++;
+ if (symbols[idx].n_type == 0 || symbols[idx].n_value == 0)
+ errx(1, "symbol %s undefined", symn);
+ /*
+ * For some symbols, the value we 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;
+ }
+ }
+}
+
+uid_t
+user2uid(char *username)
+{
+ struct passwd *pwd;
+ uid_t uid;
+ char *r;
+
+ uid = strtoul(username, &r, 0);
+ if (!*r && r != username)
+ return (uid);
+ if ((pwd = getpwnam(username)) == NULL)
+ errx(1, "getpwnam failed: No such user");
+ endpwent();
+ return (pwd->pw_uid);
+}
+
+void
+usage()
+{
+
+ fprintf(stderr,
+ "usage: ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist] [-u user]\n");
+ exit(1);
+}
generated by cgit v1.3 (git 2.53.0) at 2026-07-28 12:47:09 +0000