/* 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. 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 "nls.h" #include "../defines.h" /* for NEED_linkage_h */ #ifdef NEED_linkage_h #define __KERNEL__ /* required for SHM_DEST etc. */ #include /* required for the keyword asmlinkage */ #endif /* X/OPEN tells us to use for semctl() */ /* X/OPEN tells us to use for msgctl() */ /* X/OPEN tells us to use for shmctl() */ #include #include #include #include #include #ifdef NEED_linkage_h #undef __KERNEL__ #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. */ #if defined (__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) /* union semun is defined by including */ #else /* 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; libc 4/5 does not mention struct ipc_term at all, but includes , which defines a struct ipc_perm with such fields. glibc-1.09 has no support for sysv ipc. glibc 2 uses __key, __seq */ #if defined (__GNU_LIBRARY__) && __GNU_LIBRARY__ > 1 #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 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:"; setlocale(LC_ALL, ""); bindtextdomain(PACKAGE, LOCALEDIR); textdomain(PACKAGE); 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 %ld\n"), shm_info.shm_tot); printf (_("pages resident %ld\n"), shm_info.shm_rss); printf (_("pages swapped %ld\n"), shm_info.shm_swp); printf (_("Swap performance: %ld attempts\t %ld 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%-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); 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: printf( "0x%08x ",ipcp->KEY ); 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%-10s%-12s\n"), _("key"),_("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: printf( "0x%08x ",ipcp->KEY ); 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: 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%-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: 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%-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; }