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-rw-r--r--usr.bin/ipcs/ipcs.c555
1 files changed, 555 insertions, 0 deletions
diff --git a/usr.bin/ipcs/ipcs.c b/usr.bin/ipcs/ipcs.c
new file mode 100644
index 000000000000..99e2c8f09218
--- /dev/null
+++ b/usr.bin/ipcs/ipcs.c
@@ -0,0 +1,555 @@
+/*-
+ * SPDX-License-Identifier: BSD-3-Clause
+ *
+ * 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/param.h>
+#include <sys/proc.h>
+#define _WANT_SYSVMSG_INTERNALS
+#include <sys/msg.h>
+#define _WANT_SYSVSEM_INTERNALS
+#include <sys/sem.h>
+#define _WANT_SYSVSHM_INTERNALS
+#include <sys/shm.h>
+
+#include <err.h>
+#include <fcntl.h>
+#include <grp.h>
+#include <kvm.h>
+#include <limits.h>
+#include <pwd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "ipc.h"
+
+char *fmt_perm(u_short);
+void cvt_time(time_t, char *);
+void usage(void);
+uid_t user2uid(char *username);
+
+void print_kmsqtotal(struct msginfo msginfo);
+void print_kmsqheader(int option);
+void print_kmsqptr(int i, int option, struct msqid_kernel *kmsqptr);
+void print_kshmtotal(struct shminfo shminfo);
+void print_kshmheader(int option);
+void print_kshmptr(int i, int option, struct shmid_kernel *kshmptr);
+void print_ksemtotal(struct seminfo seminfo);
+void print_ksemheader(int option);
+void print_ksemptr(int i, int option, struct semid_kernel *ksemaptr);
+
+char *
+fmt_perm(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(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 BIGGEST 1
+#define CREATOR 2
+#define OUTSTANDING 4
+#define PID 8
+#define TIME 16
+
+int
+main(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;
+ u_long shmidx;
+ uid_t uid = 0;
+
+ while ((i = getopt(argc, argv, "MmQqSsabC:cN:optTu:y")) != -1)
+ switch (i) {
+ 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 'M':
+ display = SHMTOTAL;
+ break;
+ case 'm':
+ display = SHMINFO;
+ break;
+ case 'N':
+ namelist = optarg;
+ break;
+ case 'o':
+ option |= OUTSTANDING;
+ break;
+ case 'p':
+ option |= PID;
+ 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 't':
+ option |= TIME;
+ break;
+ case 'u':
+ user = optarg;
+ uid = user2uid(user);
+ break;
+ case 'y':
+ use_sysctl = 0;
+ 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:
+ break;
+ }
+ }
+
+ kget(X_MSGINFO, &msginfo, sizeof(msginfo));
+ if (display & (MSGINFO | MSGTOTAL)) {
+ if (display & MSGTOTAL)
+ print_kmsqtotal(msginfo);
+
+ if (display & MSGINFO) {
+ struct msqid_kernel *kxmsqids;
+ size_t kxmsqids_len;
+
+ kxmsqids_len =
+ sizeof(struct msqid_kernel) * msginfo.msgmni;
+ kxmsqids = malloc(kxmsqids_len);
+ kget(X_MSQIDS, kxmsqids, kxmsqids_len);
+
+ print_kmsqheader(option);
+
+ for (i = 0; i < msginfo.msgmni; i += 1) {
+ if (kxmsqids[i].u.msg_qbytes != 0) {
+ if (user &&
+ uid != kxmsqids[i].u.msg_perm.uid)
+ continue;
+
+ print_kmsqptr(i, option, &kxmsqids[i]);
+ }
+
+ }
+
+ printf("\n");
+ }
+ }
+
+ kget(X_SHMINFO, &shminfo, sizeof(shminfo));
+ if (display & (SHMINFO | SHMTOTAL)) {
+
+ if (display & SHMTOTAL)
+ print_kshmtotal(shminfo);
+
+ if (display & SHMINFO) {
+ struct shmid_kernel *kxshmids;
+ size_t kxshmids_len;
+
+ kxshmids_len =
+ sizeof(struct shmid_kernel) * shminfo.shmmni;
+ kxshmids = malloc(kxshmids_len);
+ kget(X_SHMSEGS, kxshmids, kxshmids_len);
+
+ print_kshmheader(option);
+
+ for (shmidx = 0; shmidx < shminfo.shmmni; shmidx += 1) {
+ if (kxshmids[shmidx].u.shm_perm.mode & 0x0800) {
+ if (user &&
+ uid != kxshmids[shmidx].u.shm_perm.uid)
+ continue;
+
+ print_kshmptr(shmidx, option, &kxshmids[shmidx]);
+ }
+ }
+ printf("\n");
+ }
+ }
+
+ kget(X_SEMINFO, &seminfo, sizeof(seminfo));
+ if (display & (SEMINFO | SEMTOTAL)) {
+ struct semid_kernel *kxsema;
+ size_t kxsema_len;
+
+ if (display & SEMTOTAL)
+ print_ksemtotal(seminfo);
+
+ if (display & SEMINFO) {
+ kxsema_len =
+ sizeof(struct semid_kernel) * seminfo.semmni;
+ kxsema = malloc(kxsema_len);
+ kget(X_SEMA, kxsema, kxsema_len);
+
+ print_ksemheader(option);
+
+ for (i = 0; i < seminfo.semmni; i += 1) {
+ if ((kxsema[i].u.sem_perm.mode & SEM_ALLOC)
+ != 0) {
+ if (user &&
+ uid != kxsema[i].u.sem_perm.uid)
+ continue;
+
+ print_ksemptr(i, option, &kxsema[i]);
+
+ }
+ }
+
+ printf("\n");
+ }
+ }
+
+ if (!use_sysctl)
+ kvm_close(kd);
+
+ exit(0);
+}
+
+void
+print_kmsqtotal(struct msginfo local_msginfo)
+{
+
+ printf("msginfo:\n");
+ printf("\tmsgmax: %12d\t(max characters in a message)\n",
+ local_msginfo.msgmax);
+ printf("\tmsgmni: %12d\t(# of message queues)\n",
+ local_msginfo.msgmni);
+ printf("\tmsgmnb: %12d\t(max characters in a message queue)\n",
+ local_msginfo.msgmnb);
+ printf("\tmsgtql: %12d\t(max # of messages in system)\n",
+ local_msginfo.msgtql);
+ printf("\tmsgssz: %12d\t(size of a message segment)\n",
+ local_msginfo.msgssz);
+ printf("\tmsgseg: %12d\t(# of message segments in system)\n\n",
+ local_msginfo.msgseg);
+}
+
+void print_kmsqheader(int option)
+{
+
+ printf("Message Queues:\n");
+ printf("T %12s %12s %-11s %-8s %-8s",
+ "ID", "KEY", "MODE", "OWNER", "GROUP");
+ if (option & CREATOR)
+ printf(" %-8s %-8s", "CREATOR", "CGROUP");
+ if (option & OUTSTANDING)
+ printf(" %20s %20s", "CBYTES", "QNUM");
+ if (option & BIGGEST)
+ printf(" %20s", "QBYTES");
+ if (option & PID)
+ printf(" %12s %12s", "LSPID", "LRPID");
+ if (option & TIME)
+ printf(" %-8s %-8s %-8s", "STIME", "RTIME", "CTIME");
+ printf("\n");
+}
+
+void
+print_kmsqptr(int i, int option, struct msqid_kernel *kmsqptr)
+{
+ char stime_buf[100], rtime_buf[100], ctime_buf[100];
+
+ cvt_time(kmsqptr->u.msg_stime, stime_buf);
+ cvt_time(kmsqptr->u.msg_rtime, rtime_buf);
+ cvt_time(kmsqptr->u.msg_ctime, ctime_buf);
+
+ printf("q %12d %12d %s %-8s %-8s",
+ IXSEQ_TO_IPCID(i, kmsqptr->u.msg_perm),
+ (int)kmsqptr->u.msg_perm.key,
+ fmt_perm(kmsqptr->u.msg_perm.mode),
+ user_from_uid(kmsqptr->u.msg_perm.uid, 0),
+ group_from_gid(kmsqptr->u.msg_perm.gid, 0));
+
+ if (option & CREATOR)
+ printf(" %-8s %-8s",
+ user_from_uid(kmsqptr->u.msg_perm.cuid, 0),
+ group_from_gid(kmsqptr->u.msg_perm.cgid, 0));
+
+ if (option & OUTSTANDING)
+ printf(" %12lu %12lu",
+ kmsqptr->u.msg_cbytes,
+ kmsqptr->u.msg_qnum);
+
+ if (option & BIGGEST)
+ printf(" %20lu", kmsqptr->u.msg_qbytes);
+
+ if (option & PID)
+ printf(" %12d %12d",
+ kmsqptr->u.msg_lspid,
+ kmsqptr->u.msg_lrpid);
+
+ if (option & TIME)
+ printf(" %s %s %s",
+ stime_buf,
+ rtime_buf,
+ ctime_buf);
+
+ printf("\n");
+}
+
+void
+print_kshmtotal(struct shminfo local_shminfo)
+{
+
+ printf("shminfo:\n");
+ printf("\tshmmax: %12lu\t(max shared memory segment size)\n",
+ local_shminfo.shmmax);
+ printf("\tshmmin: %12lu\t(min shared memory segment size)\n",
+ local_shminfo.shmmin);
+ printf("\tshmmni: %12lu\t(max number of shared memory identifiers)\n",
+ local_shminfo.shmmni);
+ printf("\tshmseg: %12lu\t(max shared memory segments per process)\n",
+ local_shminfo.shmseg);
+ printf("\tshmall: %12lu\t(max amount of shared memory in pages)\n\n",
+ local_shminfo.shmall);
+}
+
+void
+print_kshmheader(int option)
+{
+
+ printf("Shared Memory:\n");
+ printf("T %12s %12s %-11s %-8s %-8s",
+ "ID", "KEY", "MODE", "OWNER", "GROUP");
+ if (option & CREATOR)
+ printf(" %-8s %-8s", "CREATOR", "CGROUP");
+ if (option & OUTSTANDING)
+ printf(" %12s", "NATTCH");
+ if (option & BIGGEST)
+ printf(" %12s", "SEGSZ");
+ if (option & PID)
+ printf(" %12s %12s", "CPID", "LPID");
+ if (option & TIME)
+ printf(" %-8s %-8s %-8s", "ATIME", "DTIME", "CTIME");
+ printf("\n");
+}
+
+void
+print_kshmptr(int i, int option, struct shmid_kernel *kshmptr)
+{
+ char atime_buf[100], dtime_buf[100], ctime_buf[100];
+
+ cvt_time(kshmptr->u.shm_atime, atime_buf);
+ cvt_time(kshmptr->u.shm_dtime, dtime_buf);
+ cvt_time(kshmptr->u.shm_ctime, ctime_buf);
+
+ printf("m %12d %12d %s %-8s %-8s",
+ IXSEQ_TO_IPCID(i, kshmptr->u.shm_perm),
+ (int)kshmptr->u.shm_perm.key,
+ fmt_perm(kshmptr->u.shm_perm.mode),
+ user_from_uid(kshmptr->u.shm_perm.uid, 0),
+ group_from_gid(kshmptr->u.shm_perm.gid, 0));
+
+ if (option & CREATOR)
+ printf(" %-8s %-8s",
+ user_from_uid(kshmptr->u.shm_perm.cuid, 0),
+ group_from_gid(kshmptr->u.shm_perm.cgid, 0));
+
+ if (option & OUTSTANDING)
+ printf(" %12d",
+ kshmptr->u.shm_nattch);
+
+ if (option & BIGGEST)
+ printf(" %12zu",
+ kshmptr->u.shm_segsz);
+
+ if (option & PID)
+ printf(" %12d %12d",
+ kshmptr->u.shm_cpid,
+ kshmptr->u.shm_lpid);
+
+ if (option & TIME)
+ printf(" %s %s %s",
+ atime_buf,
+ dtime_buf,
+ ctime_buf);
+
+ printf("\n");
+}
+
+void
+print_ksemtotal(struct seminfo local_seminfo)
+{
+
+ printf("seminfo:\n");
+ printf("\tsemmni: %12d\t(# of semaphore identifiers)\n",
+ local_seminfo.semmni);
+ printf("\tsemmns: %12d\t(# of semaphores in system)\n",
+ local_seminfo.semmns);
+ printf("\tsemmnu: %12d\t(# of undo structures in system)\n",
+ local_seminfo.semmnu);
+ printf("\tsemmsl: %12d\t(max # of semaphores per id)\n",
+ local_seminfo.semmsl);
+ printf("\tsemopm: %12d\t(max # of operations per semop call)\n",
+ local_seminfo.semopm);
+ printf("\tsemume: %12d\t(max # of undo entries per process)\n",
+ local_seminfo.semume);
+ printf("\tsemusz: %12d\t(size in bytes of undo structure)\n",
+ local_seminfo.semusz);
+ printf("\tsemvmx: %12d\t(semaphore maximum value)\n",
+ local_seminfo.semvmx);
+ printf("\tsemaem: %12d\t(adjust on exit max value)\n\n",
+ local_seminfo.semaem);
+}
+
+void
+print_ksemheader(int option)
+{
+
+ printf("Semaphores:\n");
+ printf("T %12s %12s %-11s %-8s %-8s",
+ "ID", "KEY", "MODE", "OWNER", "GROUP");
+ if (option & CREATOR)
+ printf(" %-8s %-8s", "CREATOR", "CGROUP");
+ if (option & BIGGEST)
+ printf(" %12s", "NSEMS");
+ if (option & TIME)
+ printf(" %-8s %-8s", "OTIME", "CTIME");
+ printf("\n");
+}
+
+void
+print_ksemptr(int i, int option, struct semid_kernel *ksemaptr)
+{
+ char ctime_buf[100], otime_buf[100];
+
+ cvt_time(ksemaptr->u.sem_otime, otime_buf);
+ cvt_time(ksemaptr->u.sem_ctime, ctime_buf);
+
+ printf("s %12d %12d %s %-8s %-8s",
+ IXSEQ_TO_IPCID(i, ksemaptr->u.sem_perm),
+ (int)ksemaptr->u.sem_perm.key,
+ fmt_perm(ksemaptr->u.sem_perm.mode),
+ user_from_uid(ksemaptr->u.sem_perm.uid, 0),
+ group_from_gid(ksemaptr->u.sem_perm.gid, 0));
+
+ if (option & CREATOR)
+ printf(" %-8s %-8s",
+ user_from_uid(ksemaptr->u.sem_perm.cuid, 0),
+ group_from_gid(ksemaptr->u.sem_perm.cgid, 0));
+
+ if (option & BIGGEST)
+ printf(" %12d",
+ ksemaptr->u.sem_nsems);
+
+ if (option & TIME)
+ printf(" %s %s",
+ otime_buf,
+ ctime_buf);
+
+ printf("\n");
+}
+
+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(void)
+{
+
+ fprintf(stderr,
+ "usage: "
+ "ipcs [-abcmopqstyMQST] [-C corefile] [-N namelist] [-u user]\n");
+ exit(1);
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-05 09:49:07 +0000