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- /* 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;
- }
-
-