Imported from util-linux-2.2 tarball.

1 files changed, 551 insertions, 0 deletions

diff --git a/sys-utils/ipcs.c b/sys-utils/ipcs.c
new file mode 100644
index 000000000..8e7f9c609
--- /dev/null
+++ b/sys-utils/ipcs.c
@@ -0,0 +1,551 @@
+/* Original author unknown, but 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. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <getopt.h>
+#include <errno.h>
+#include <time.h>
+#include <pwd.h>
+#include <grp.h>
+#define __KERNEL__
+#include <sys/sem.h>
+#include <sys/msg.h>
+#include <sys/shm.h>
+
+
+#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;
+
+void usage(void)
+{
+	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); 
+	return;
+}
+
+void help (void)
+{
+	printf ("%s provides information on ipc facilities for", progname);
+        printf (" which you have read access.\n"); 
+	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();
+	return;
+}
+
+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)) != EOF) {
+		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 (0);
+		case '?':
+			usage();
+			exit (0);
+		}
+	}
+
+	if  (print) {
+		if (shm) { 
+			print_shm (id);
+			exit (0);
+		}
+		if (sem) { 
+			print_sem (id);
+			exit (0);
+		}
+		if (msg) {
+			print_msg (id);
+			exit (0);
+		}
+		usage();
+	}
+
+	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 0;
+}
+
+
+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 *) &shm_info);
+	if (maxid < 0) {
+		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 *) &shminfo)) < 0 )
+			return;
+		printf ("max number of segments = %d\n", shminfo.shmmni);
+		printf ("max seg size (kbytes) = %d\n", shminfo.shmmax >> 10);
+		printf ("max total shared memory (kbytes) = %d\n", shminfo.shmall << 2);
+		printf ("min seg size (bytes) = %d\n", shminfo.shmmin);
+		return;
+
+	case STATUS:
+		printf ("------ Shared Memory Status --------\n");
+		printf ("segments allocated %d\n", shm_info.used_ids);
+		printf ("pages allocated %d\n", shm_info.shm_tot);
+		printf ("pages resident  %d\n", shm_info.shm_rss);
+		printf ("pages swapped   %d\n", shm_info.shm_swp);
+		printf ("Swap performance: %d attempts\t %d 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%-12s\n", "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);
+			printf("  %-20.16s%-20.16s%-20.16s\n",
+			shmseg.shm_atime ? ctime(&shmseg.shm_atime) + 4 : "Not set",
+		 	shmseg.shm_dtime ? ctime(&shmseg.shm_dtime) + 4 : "Not set",
+			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:
+			if (pw)
+				printf ("%-10d%-10.10s", shmid, pw->pw_name);
+			else
+				printf ("%-10d%-10d", shmid, ipcp->uid);
+			printf ("%-10o%-10d%-10d%-6s%-6s\n", 
+				ipcp->mode & 0777, 
+				shmseg.shm_segsz, 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 = (ushort *)  &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 = (ushort *) &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 ("------ Shared Memory Operation/Change Times --------\n");
+		printf ("%-8s%-10s  %-26.24s %-26.24s\n",
+			"shmid","owner","last-op","last-changed");
+		break;
+
+	case PID:
+		break;
+
+	default:
+		printf ("------ Semaphore Arrays --------\n");
+		printf ("%-10s%-10s%-10s%-10s%-12s\n", 
+			"semid","owner","perms","nsems","status");
+		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 %-26.24s\n", 
+				semary.sem_otime ? ctime(&semary.sem_otime) : "Not set",
+				semary.sem_ctime ? ctime(&semary.sem_ctime) : "Not set");
+			break;
+		case PID:
+			break;
+			
+		default:
+			if (pw)
+				printf ("%-10d%-10.9s", semid, pw->pw_name);
+			else
+				printf ("%-10d%-9d", semid, ipcp->uid);
+			printf ("%-10o%-10d\n", 
+				ipcp->mode & 0777,
+				semary.sem_nsems);
+			break;
+		}
+	}
+	return;
+}
+
+
+void do_msg (char format)
+{
+	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 *) &msginfo);
+	if (maxid < 0) {
+		printf ("kernel not configured for shared memory\n");
+		return;
+	}
+	
+	switch (format) {
+	case LIMITS:
+		if ((msgctl (0, IPC_INFO, (struct msqid_ds *) &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:
+		break;
+
+	default:
+		printf ("------ Message Queues --------\n");
+		printf ("%-10s%-10s%-10s%-12s%-12s\n", "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%-20.16s%-20.16s\n", 
+			msgque.msg_stime ? ctime(&msgque.msg_stime) + 4 : "Not set",
+		 	msgque.msg_rtime ? ctime(&msgque.msg_rtime) + 4 : "Not set",
+			msgque.msg_ctime ? ctime(&msgque.msg_ctime) + 4 : "Not set");
+			break;
+		case PID:
+			break;
+			
+		default:
+			if (pw)
+				printf ("%-10d%-10.10s", msqid, pw->pw_name);
+			else
+				printf ("%-10d%-10d", msqid, ipcp->uid);
+			printf ("%-10o%-12d%-12d\n", 
+			ipcp->mode & 0777, msgque.msg_cbytes,
+				msgque.msg_qnum);
+			break;
+		}
+	}
+	return;
+}
+
+
+void print_shm (int shmid)
+{
+	struct shmid_ds shmds;
+	struct ipc_perm *ipcp = &shmds.shm_perm;
+
+	if (shmctl (shmid, IPC_STAT, &shmds) == -1) {
+		perror ("shmctl ");
+		return;
+	}
+
+	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=%d\tlpid=%d\tcpid=%d\tnattch=%d\n", 
+		shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid, 
+		shmds.shm_nattch);
+	printf ("att_time=%s", shmds.shm_atime ? ctime (&shmds.shm_atime) : 
+		"Not set\n");
+	printf ("det_time=%s", shmds.shm_dtime ? ctime (&shmds.shm_dtime) : 
+		"Not set\n");
+	printf ("change_time=%s", ctime (&shmds.shm_ctime));
+	printf ("\n");
+	return;
+}
+
+ 
+
+void print_msg (int msqid)
+{
+	struct msqid_ds buf;
+	struct ipc_perm *ipcp = &buf.msg_perm;
+
+	if (msgctl (msqid, IPC_STAT, &buf) == -1) {
+		perror ("msgctl ");
+		return;
+	}
+	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=%d\tqbytes=%d\tqnum=%d\tlspid=%d\tlrpid=%d\n",
+		buf.msg_cbytes, buf.msg_qbytes, buf.msg_qnum, buf.msg_lspid, 
+		buf.msg_lrpid);
+	printf ("send_time=%srcv_time=%schange_time=%s", 
+		buf.msg_rtime? ctime (&buf.msg_rtime) : "Not Set\n",
+		buf.msg_stime? ctime (&buf.msg_stime) : "Not Set\n",
+		buf.msg_ctime? ctime (&buf.msg_ctime) : "Not Set\n");
+	printf ("\n");
+	return;
+}
+
+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) {
+		perror ("semctl ");
+		return;
+	}
+	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 = %d\n", semds.sem_nsems);
+	printf ("otime = %s", semds.sem_otime ? ctime (&semds.sem_otime) : 
+		"Not set\n");
+	printf ("ctime = %s", 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) {
+			perror ("semctl ");
+			exit (1);
+		}
+		printf ("%-10d%-10d%-10d%-10d%-10d\n", i, val, ncnt, zcnt, pid);
+	}
+	printf ("\n");
+	return;
+}
+