#include <sys/cdefs.h>
#include <assert.h>
#include <err.h>
#include <fcntl.h>
#include <grp.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 <sysexits.h>
#include "sys/types.h"
#include <sys/ucred.h>
#include <sys/time.h>
#include <sys/proc.h>
#include <sys/param.h>
#include <sys/sysctl.h>
#include <errno.h>
#include "sys/ipcs.h"
#define KERNEL 1
#include "sys/ipc.h"
#include "sys/sem_internal.h"
#include "sys/shm_internal.h"
#include "sys/msg.h"
#ifndef IXSEQ_TO_IPCID
#define IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) | (ix & 0xffff))
#endif
static char *
fmt_perm(u_short mode, char write_char)
{
static char buffer[100];
buffer[0] = '-';
buffer[1] = '-';
buffer[2] = ((mode & 0400) ? 'r' : '-');
buffer[3] = ((mode & 0200) ? write_char : '-');
buffer[4] = '-';
buffer[5] = ((mode & 0040) ? 'r' : '-');
buffer[6] = ((mode & 0020) ? write_char : '-');
buffer[7] = '-';
buffer[8] = ((mode & 0004) ? 'r' : '-');
buffer[9] = ((mode & 0002) ? write_char : '-');
buffer[10] = '-';
buffer[11] = '\0';
return (&buffer[0]);
}
static void
cvt_time(time_t t, char *buf)
{
struct tm *tm;
if (t == 0) {
strcpy(buf, "no-entry");
} else {
tm = localtime(&t);
if (tm != NULL) {
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
static void
usage(void)
{
errx(EX_USAGE, "%s","usage: ipcs [-abcmopqstMQST]\n");
}
static int
safe_sysctlbyname(const char *name, void *oldp, size_t *oldlenp, void *newp, size_t newlen)
{
int rv, sv_errno=0;
if (seteuid(0))
err(1, "seteuid(0) failed");
rv = sysctlbyname(name, oldp, oldlenp, newp, newlen);
if (rv < 0)
sv_errno = errno;
if (seteuid(getuid()))
err(1, "seteuid(%d) failed", getuid());
if (rv < 0)
errno = sv_errno;
return rv;
}
int
main(argc, argv)
int argc;
char *argv[];
{
int display = 0;
int option = 0;
int exit_val = 0;
time_t now;
char datestring[100];
int i;
if (seteuid(getuid()))
err(1, "seteuid(%d) failed", getuid());
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 (display == 0)
display = SHMINFO | MSGINFO | SEMINFO;
now = time(0);
struct tm* tm = localtime(&now);
if (tm == NULL) {
now = 0;
tm = localtime(&now);
}
if (0 == strftime(datestring, sizeof(datestring), "%a %b %e %H:%M:%S %Z %Y", tm))
errx(1, "strftime failed\n");
printf("IPC status from <running system> as of %s\n", datestring);
if ((display & (MSGINFO | MSGTOTAL))) {
if (display & MSGTOTAL) {
struct IPCS_command ic;
struct msginfo msginfo;
size_t ic_size = sizeof(ic);
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_MSG_CONF;
ic.ipcs_cursor = 0;
ic.ipcs_data = &msginfo;
ic.ipcs_datalen = sizeof(msginfo);
if (safe_sysctlbyname(IPCS_MSG_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
if (errno != EPERM) {
char buffer[1024];
snprintf(buffer, 1024, "sysctlbyname(IPCS_MSG_SYSCTL, op=CONF, &ic, &%ld) datalen=%d",
sizeof(ic), ic.ipcs_datalen);
perror(buffer);
} else
perror("sysctlbyname IPCS_MSG_SYSCTL");
}
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 IPCS_command ic;
struct __msqid_ds_new ds;
struct __msqid_ds_new *msqptr = &ds;
size_t ic_size = sizeof(ic);
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("\nMessage Queues:\n");
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_MSG_ITER;
ic.ipcs_cursor = 0;
ic.ipcs_datalen = sizeof(*msqptr);
ic.ipcs_data = msqptr;
memset(msqptr, 0, sizeof(*msqptr));
while(!(safe_sysctlbyname(IPCS_MSG_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
ic.ipcs_data = msqptr;
if (msqptr->msg_qbytes != 0) {
char stime_buf[100], rtime_buf[100],
ctime_buf[100];
cvt_time(msqptr->msg_stime, stime_buf);
cvt_time(msqptr->msg_rtime, rtime_buf);
cvt_time(msqptr->msg_ctime, ctime_buf);
printf("q %6d 0x%08x %s %8s %8s",
IXSEQ_TO_IPCID((ic.ipcs_cursor-1), msqptr->msg_perm),
(int)msqptr->msg_perm._key,
fmt_perm(msqptr->msg_perm.mode, 'w'),
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");
}
memset(msqptr, 0, sizeof(*msqptr));
errno = 0;
}
if (errno != ENOENT && errno != ERANGE) {
if (errno != EPERM) {
errx(1, "sysctlbyname(IPCS_MSG_SYSCTL, op=ITER, &ic, &%ld) datalen=%d failed:%s\n",
sizeof(ic), ic.ipcs_datalen, strerror(errno));
} else
errx(1, "sysctlbyname IPCS_MSG_SYSCTL: %s", strerror(errno));
}
printf("\n");
}
} else
if (display & (MSGINFO | MSGTOTAL)) {
errx(1, "%s", "SVID messages facility not configured in the system\n");
}
if ((display & (SHMINFO | SHMTOTAL))) {
if (display & SHMTOTAL) {
struct IPCS_command ic;
struct shminfo shminfo;
size_t ic_size = sizeof(ic);
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_SHM_CONF;
ic.ipcs_cursor = 0;
ic.ipcs_data = &shminfo;
ic.ipcs_datalen = sizeof(shminfo);
if (safe_sysctlbyname(IPCS_SHM_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
if (errno != EPERM) {
errx(1, "sysctlbyname(IPCS_SHM_SYSCTL, op=CONF, &ic, &%ld) datalen=%d failed: %s\n",
sizeof(ic), ic.ipcs_datalen, strerror(errno));
} else
errx(1, "sysctlbyname: %s", strerror(errno));
}
printf("shminfo:\n");
printf("\tshmmax: %7lld\t(max shared memory segment size)\n",
shminfo.shmmax);
printf("\tshmmin: %7lld\t(min shared memory segment size)\n",
shminfo.shmmin);
printf("\tshmmni: %7lld\t(max number of shared memory identifiers)\n",
shminfo.shmmni);
printf("\tshmseg: %7lld\t(max shared memory segments per process)\n",
shminfo.shmseg);
printf("\tshmall: %7lld\t(max amount of shared memory in pages)\n\n",
shminfo.shmall);
}
if (display & SHMINFO) {
struct IPCS_command ic;
struct __shmid_ds_new ds;
struct __shmid_ds_new *shmptr = &ds;
size_t ic_size = sizeof(ic);
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("\nShared Memory:\n");
{
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_SHM_ITER;
ic.ipcs_cursor = 0;
ic.ipcs_datalen = sizeof(*shmptr);
ic.ipcs_data = shmptr;
memset(shmptr, 0, sizeof(*shmptr));
while(!(safe_sysctlbyname(IPCS_SHM_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
ic.ipcs_data = shmptr;
if (shmptr->shm_perm.mode & 0x0800) {
char atime_buf[100], dtime_buf[100],
ctime_buf[100];
cvt_time(shmptr->shm_atime, atime_buf);
cvt_time(shmptr->shm_dtime, dtime_buf);
cvt_time(shmptr->shm_ctime, ctime_buf);
printf("m %6d 0x%08x %s %8s %8s",
IXSEQ_TO_IPCID((ic.ipcs_cursor-1), shmptr->shm_perm),
(int)shmptr->shm_perm._key,
fmt_perm(shmptr->shm_perm.mode, 'w'),
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(" %6ld",
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");
}
memset(shmptr, 0, sizeof(*shmptr));
errno = 0;
}
if (errno != ENOENT && errno != ERANGE) {
if (errno != EPERM) {
errx(1, "sysctlbyname(IPCS_SHM_SYSCTL, op=ITER, &ic, &%ld) datalen=%d failed:%s\n",
sizeof(ic), ic.ipcs_datalen, strerror(errno));
} else
errx(1, "sysctlbyname: %s", strerror(errno));
}
}
printf("\n");
}
}
else
if (display & (SHMINFO | SHMTOTAL)) {
errx(1, "%s", "SVID shared memory facility not configured in the system\n");
}
if ((display & (SEMINFO | SEMTOTAL))) {
if (display & SEMTOTAL) {
struct IPCS_command ic;
struct seminfo seminfo;
size_t ic_size = sizeof(ic);
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_SEM_CONF;
ic.ipcs_cursor = 0;
ic.ipcs_data = &seminfo;
ic.ipcs_datalen = sizeof(seminfo);
if (safe_sysctlbyname(IPCS_SEM_SYSCTL, &ic, &ic_size, &ic, ic_size)) {
if (errno != EPERM) {
char buffer[1024];
snprintf(buffer, 1024, "sysctlbyname(IPCS_SEM_SYSCTL, op=CONF, &ic, &%ld) datalen=%d",
sizeof(ic), ic.ipcs_datalen);
perror(buffer);
} else
perror("sysctlbyname IPCS_SEM_SYSCTL/SEM_CONF");
}
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) {
struct IPCS_command ic;
struct __semid_ds_new ds;
struct __semid_ds_new *semaptr = &ds;
size_t ic_size = sizeof(ic);
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("\nSemaphores:\n");
ic.ipcs_magic = IPCS_MAGIC;
ic.ipcs_op = IPCS_SEM_ITER;
ic.ipcs_cursor = 0;
ic.ipcs_datalen = sizeof(*semaptr);
ic.ipcs_data = semaptr;
memset(semaptr, 0, sizeof(*semaptr));
while(!(safe_sysctlbyname(IPCS_SEM_SYSCTL, &ic, &ic_size, &ic, ic_size))) {
ic.ipcs_data = semaptr;
if ((semaptr->sem_perm.mode & SEM_ALLOC) != 0) {
char ctime_buf[100], otime_buf[100];
cvt_time(semaptr->sem_otime, otime_buf);
cvt_time(semaptr->sem_ctime, ctime_buf);
printf("s %6d 0x%08x %s %8s %8s",
IXSEQ_TO_IPCID((ic.ipcs_cursor-1), semaptr->sem_perm),
(int)semaptr->sem_perm._key,
fmt_perm(semaptr->sem_perm.mode, 'a'),
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");
}
memset(semaptr, 0, sizeof(*semaptr));
errno = 0;
}
if (errno != ENOENT && errno != ERANGE) {
if (errno != EPERM) {
errx(1, "sysctlbyname(IPCS_SEM_SYSCTL/ITER, op=ITER, &ic, &%ld) datalen=%d failed: %s\n",
sizeof(ic), ic.ipcs_datalen, strerror(errno));
} else
errx(1, "sysctlbyname: IPCS_SEM_SYSCTL %s", strerror(errno));
}
printf("\n");
}
} else
if (display & (SEMINFO | SEMTOTAL)) {
errx(1, "%s", "SVID semaphores facility not configured in the system\n");
}
exit(exit_val);
}