/* Original author unknown, 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. Patch from arnolds@ifns.de (Heinz-Ado Arnolds) applied Mon Jul 1 19:30:41 1996 by janl@math.uio.no to add code missing in case PID: clauses. Patched to display the key field -- hy@picksys.com 12/18/96 1999-02-22 Arkadiusz Mi¶kiewicz - added Native Language Support */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "nls.h" /*-------------------------------------------------------------------*/ /* SHM_DEST and SHM_LOCKED are defined in kernel headers, but inside #ifdef __KERNEL__ ... #endif */ #ifndef SHM_DEST /* shm_mode upper byte flags */ #define SHM_DEST 01000 /* segment will be destroyed on last detach */ #define SHM_LOCKED 02000 /* segment will not be swapped */ #endif /* For older kernels the same holds for the defines below */ #ifndef MSG_STAT #define MSG_STAT 11 #define MSG_INFO 12 #endif #ifndef SHM_STAT #define SHM_STAT 13 #define SHM_INFO 14 struct shm_info { int used_ids; ulong shm_tot; /* total allocated shm */ ulong shm_rss; /* total resident shm */ ulong shm_swp; /* total swapped shm */ ulong swap_attempts; ulong swap_successes; }; #endif #ifndef SEM_STAT #define SEM_STAT 18 #define SEM_INFO 19 #endif /* Some versions of libc only define IPC_INFO when __USE_GNU is defined. */ #ifndef IPC_INFO #define IPC_INFO 3 #endif /*-------------------------------------------------------------------*/ /* The last arg of semctl is a union semun, but where is it defined? X/OPEN tells us to define it ourselves, but until recently Linux include files would also define it. */ #ifndef HAVE_UNION_SEMUN /* according to X/OPEN we have to define it ourselves */ union semun { int val; struct semid_ds *buf; unsigned short int *array; struct seminfo *__buf; }; #endif /* X/OPEN (Jan 1987) does not define fields key, seq in struct ipc_perm; glibc-1.09 has no support for sysv ipc. glibc 2 uses __key, __seq */ #if defined (__GLIBC__) && __GLIBC__ >= 2 #define KEY __key #else #define KEY key #endif #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 void usage(int rc) { printf (_("Usage: %1$s [-asmq] [-t|-c|-l|-u|-p]\n" " %1$s [-s|-m|-q] -i id\n" " %1$s -h for help\n"), program_invocation_short_name); exit(rc); } static void help (int rc) { printf (_("Usage: %1$s [resource]... [output-format]\n" " %1$s [resource] -i id\n\n"), program_invocation_short_name); printf (_("Provide information on IPC facilities for which you " "have read access.\n\n")); printf (_( " -h display this help\n" " -i id print details on resource identified by id\n\n")); printf (_("Resource options:\n" " -m shared memory segments\n" " -q message queues\n" " -s semaphores\n" " -a all (default)\n\n")); printf (_("Output format:\n" " -t time\n" " -p pid\n" " -c creator\n" " -l limits\n" " -u summary\n")); exit(rc); } int main (int argc, char **argv) { int opt, msg = 0, sem = 0, shm = 0, id=0, print=0; char format = 0; char options[] = "atcluphsmqi:"; setlocale(LC_ALL, ""); bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); while ((opt = getopt (argc, argv, options)) != -1) { 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_SUCCESS); case '?': usage(EXIT_SUCCESS); } } if (print) { if (shm) print_shm (id); else if (sem) print_sem (id); else if (msg) print_msg (id); else usage (EXIT_FAILURE); } else { 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 EXIT_SUCCESS; } static 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 *) (void *) &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 *) (void *) &shminfo)) < 0 ) return; /* glibc 2.1.3 and all earlier libc's have ints as fields of struct shminfo; glibc 2.1.91 has unsigned long; ach */ printf (_("max number of segments = %lu\n"), (unsigned long) shminfo.shmmni); printf (_("max seg size (kbytes) = %lu\n"), (unsigned long) (shminfo.shmmax >> 10)); printf (_("max total shared memory (kbytes) = %llu\n"), getpagesize() / 1024 * (unsigned long long) shminfo.shmall); printf (_("min seg size (bytes) = %lu\n"), (unsigned long) shminfo.shmmin); return; case STATUS: printf (_("------ Shared Memory Status --------\n")); /* TRANSLATORS: This output format is mantained for backward compatibility as ipcs is used in scripts. For consistency with the rest, the translated form can follow this model: "segments allocated = %d\n" "pages allocated = %ld\n" "pages resident = %ld\n" "pages swapped = %ld\n" "swap performance = %ld attempts, %ld successes\n" */ printf (_("segments allocated %d\n" "pages allocated %ld\n" "pages resident %ld\n" "pages swapped %ld\n" "Swap performance: %ld attempts\t %ld successes\n"), shm_info.used_ids, shm_info.shm_tot, shm_info.shm_rss, shm_info.shm_swp, 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 PIDs --------\n")); printf ("%-10s %-10s %-10s %-10s\n", _("shmid"),_("owner"),_("cpid"),_("lpid")); break; default: printf (_("------ Shared Memory Segments --------\n")); printf ("%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n", _("key"),_("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); /* ctime uses static buffer: use separate calls */ printf(" %-20.16s", shmseg.shm_atime ? ctime(&shmseg.shm_atime) + 4 : _("Not set")); printf(" %-20.16s", shmseg.shm_dtime ? ctime(&shmseg.shm_dtime) + 4 : _("Not set")); printf(" %-20.16s\n", 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: printf("0x%08x ",ipcp->KEY ); if (pw) printf ("%-10d %-10.10s", shmid, pw->pw_name); else printf ("%-10d %-10d", shmid, ipcp->uid); printf (" %-10o %-10lu %-10ld %-6s %-6s\n", ipcp->mode & 0777, /* * earlier: int, Austin has size_t */ (unsigned long) shmseg.shm_segsz, /* * glibc-2.1.3 and earlier has unsigned short; * Austin has shmatt_t */ (long) 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 *) (void *) &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 *) (void *) &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 (_("------ Semaphore Operation/Change Times --------\n")); printf ("%-8s %-10s %-26.24s %-26.24s\n", _("semid"),_("owner"),_("last-op"),_("last-changed")); break; case PID: break; default: printf (_("------ Semaphore Arrays --------\n")); printf ("%-10s %-10s %-10s %-10s %-10s\n", _("key"),_("semid"),_("owner"),_("perms"),_("nsems")); 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", semary.sem_otime ? ctime(&semary.sem_otime) : _("Not set")); printf (" %-26.24s\n", semary.sem_ctime ? ctime(&semary.sem_ctime) : _("Not set")); break; case PID: break; default: printf("0x%08x ", ipcp->KEY); if (pw) printf ("%-10d %-10.10s", semid, pw->pw_name); else printf ("%-10d %-10d", semid, ipcp->uid); printf (" %-10o %-10ld\n", ipcp->mode & 0777, /* * glibc-2.1.3 and earlier has unsigned short; * glibc-2.1.91 has variation between * unsigned short and unsigned long * Austin prescribes unsigned short. */ (long) semary.sem_nsems); break; } } } 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 *) (void *) &msginfo); if (maxid < 0) { printf (_("kernel not configured for message queues\n")); return; } switch (format) { case LIMITS: if ((msgctl (0, IPC_INFO, (struct msqid_ds *) (void *) &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")); #ifndef __FreeBSD_kernel__ printf (_("allocated queues = %d\n"), msginfo.msgpool); printf (_("used headers = %d\n"), msginfo.msgmap); #endif 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: printf (_("------ Message Queues PIDs --------\n")); printf ("%-10s %-10s %-10s %-10s\n", _("msqid"),_("owner"),_("lspid"),_("lrpid")); break; default: printf (_("------ Message Queues --------\n")); printf ("%-10s %-10s %-10s %-10s %-12s %-12s\n", _("key"), _("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", msgque.msg_stime ? ctime(&msgque.msg_stime) + 4 : _("Not set")); printf (" %-20.16s", msgque.msg_rtime ? ctime(&msgque.msg_rtime) + 4 : _("Not set")); printf (" %-20.16s\n", msgque.msg_ctime ? ctime(&msgque.msg_ctime) + 4 : _("Not set")); break; case PID: if (pw) printf ("%-8d %-10.10s", msqid, pw->pw_name); else printf ("%-8d %-10d", msqid, ipcp->uid); printf (" %5d %5d\n", msgque.msg_lspid, msgque.msg_lrpid); break; default: printf( "0x%08x ",ipcp->KEY ); if (pw) printf ("%-10d %-10.10s", msqid, pw->pw_name); else printf ("%-10d %-10d", msqid, ipcp->uid); printf (" %-10o %-12ld %-12ld\n", ipcp->mode & 0777, /* * glibc-2.1.3 and earlier has unsigned short; * glibc-2.1.91 has variation between * unsigned short, unsigned long * Austin has msgqnum_t */ (long) msgque.msg_cbytes, (long) 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) err(EXIT_FAILURE, _("shmctl failed")); 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=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n"), (long) shmds.shm_segsz, shmds.shm_lpid, shmds.shm_cpid, (long) shmds.shm_nattch); printf (_("att_time=%-26.24s\n"), shmds.shm_atime ? ctime (&shmds.shm_atime) : _("Not set")); printf (_("det_time=%-26.24s\n"), shmds.shm_dtime ? ctime (&shmds.shm_dtime) : _("Not set")); printf (_("change_time=%-26.24s\n"), 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) err(EXIT_FAILURE, _("msgctl failed")); 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=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n"), /* * glibc-2.1.3 and earlier has unsigned short; * glibc-2.1.91 has variation between * unsigned short, unsigned long * Austin has msgqnum_t (for msg_qbytes) */ (long) buf.msg_cbytes, (long) buf.msg_qbytes, (long) buf.msg_qnum, buf.msg_lspid, buf.msg_lrpid); printf (_("send_time=%-26.24s\n"), buf.msg_stime ? ctime (&buf.msg_stime) : _("Not set")); printf (_("rcv_time=%-26.24s\n"), buf.msg_rtime ? ctime (&buf.msg_rtime) : _("Not set")); printf (_("change_time=%-26.24s\n"), buf.msg_ctime ? ctime (&buf.msg_ctime) : _("Not set")); 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) err(EXIT_FAILURE, _("semctl failed")); 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 = %ld\n"), (long) semds.sem_nsems); printf (_("otime = %-26.24s\n"), semds.sem_otime ? ctime (&semds.sem_otime) : _("Not set")); printf (_("ctime = %-26.24s\n"), 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) err(EXIT_FAILURE, _("semctl failed")); printf ("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid); } printf ("\n"); return; }