diff options
Diffstat (limited to 'sys-utils/ipcs.c')
-rw-r--r-- | sys-utils/ipcs.c | 668 |
1 files changed, 668 insertions, 0 deletions
diff --git a/sys-utils/ipcs.c b/sys-utils/ipcs.c new file mode 100644 index 0000000..73cf28a --- /dev/null +++ b/sys-utils/ipcs.c @@ -0,0 +1,668 @@ +/* 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 MiĆkiewicz <misiek@pld.ORG.PL> + * - added Native Language Support + */ + +#include <errno.h> +#include <getopt.h> + +#include "c.h" +#include "nls.h" +#include "closestream.h" + +#include "ipcutils.h" + +enum output_formats { + NOTSPECIFIED, + LIMITS, + STATUS, + CREATOR, + TIME, + PID +}; +enum { + OPT_HUMAN = CHAR_MAX + 1 +}; + +static void do_shm (char format, int unit); +static void print_shm (int id, int unit); +static void do_sem (char format); +static void print_sem (int id); +static void do_msg (char format, int unit); +static void print_msg (int id, int unit); + +/* we read time as int64_t from /proc, so cast... */ +#define xctime(_x) ctime((time_t *) (_x)) + +static void __attribute__((__noreturn__)) usage(void) +{ + FILE *out = stdout; + fputs(USAGE_HEADER, out); + fprintf(out, _(" %1$s [resource-option...] [output-option]\n" + " %1$s -m|-q|-s -i <id>\n"), program_invocation_short_name); + + fputs(USAGE_SEPARATOR, out); + fputs(_("Show information on IPC facilities.\n"), out); + + fputs(USAGE_OPTIONS, out); + fputs(_(" -i, --id <id> print details on resource identified by <id>\n"), out); + printf(USAGE_HELP_OPTIONS(16)); + + fputs(USAGE_SEPARATOR, out); + fputs(_("Resource options:\n"), out); + fputs(_(" -m, --shmems shared memory segments\n"), out); + fputs(_(" -q, --queues message queues\n"), out); + fputs(_(" -s, --semaphores semaphores\n"), out); + fputs(_(" -a, --all all (default)\n"), out); + + fputs(USAGE_SEPARATOR, out); + fputs(_("Output options:\n"), out); + fputs(_(" -t, --time show attach, detach and change times\n"), out); + fputs(_(" -p, --pid show PIDs of creator and last operator\n"), out); + fputs(_(" -c, --creator show creator and owner\n"), out); + fputs(_(" -l, --limits show resource limits\n"), out); + fputs(_(" -u, --summary show status summary\n"), out); + fputs(_(" --human show sizes in human-readable format\n"), out); + fputs(_(" -b, --bytes show sizes in bytes\n"), out); + printf(USAGE_MAN_TAIL("ipcs(1)")); + + exit(EXIT_SUCCESS); +} + +int main (int argc, char **argv) +{ + int opt, msg = 0, shm = 0, sem = 0, id = 0, specific = 0; + char format = NOTSPECIFIED; + int unit = IPC_UNIT_DEFAULT; + static const struct option longopts[] = { + {"id", required_argument, NULL, 'i'}, + {"queues", no_argument, NULL, 'q'}, + {"shmems", no_argument, NULL, 'm'}, + {"semaphores", no_argument, NULL, 's'}, + {"all", no_argument, NULL, 'a'}, + {"time", no_argument, NULL, 't'}, + {"pid", no_argument, NULL, 'p'}, + {"creator", no_argument, NULL, 'c'}, + {"limits", no_argument, NULL, 'l'}, + {"summary", no_argument, NULL, 'u'}, + {"human", no_argument, NULL, OPT_HUMAN}, + {"bytes", no_argument, NULL, 'b'}, + {"version", no_argument, NULL, 'V'}, + {"help", no_argument, NULL, 'h'}, + {NULL, 0, NULL, 0} + }; + char options[] = "i:qmsatpclubVh"; + + setlocale(LC_ALL, ""); + bindtextdomain(PACKAGE, LOCALEDIR); + textdomain(PACKAGE); + atexit(close_stdout); + + while ((opt = getopt_long(argc, argv, options, longopts, NULL)) != -1) { + switch (opt) { + case 'i': + id = atoi (optarg); + specific = 1; + break; + case 'a': + msg = shm = sem = 1; + break; + case 'q': + msg = 1; + break; + case 'm': + shm = 1; + break; + case 's': + sem = 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 OPT_HUMAN: + unit = IPC_UNIT_HUMAN; + break; + case 'b': + unit = IPC_UNIT_BYTES; + break; + case 'h': + usage(); + case 'V': + printf(UTIL_LINUX_VERSION); + return EXIT_SUCCESS; + default: + errtryhelp(EXIT_FAILURE); + } + } + + if (specific && (msg + shm + sem != 1)) + errx (EXIT_FAILURE, + _("when using an ID, a single resource must be specified")); + if (specific) { + if (msg) + print_msg (id, unit); + if (shm) + print_shm (id, unit); + if (sem) + print_sem (id); + } else { + if (!msg && !shm && !sem) + msg = shm = sem = 1; + printf ("\n"); + if (msg) { + do_msg (format, unit); + printf ("\n"); + } + if (shm) { + do_shm (format, unit); + printf ("\n"); + } + if (sem) { + do_sem (format); + printf ("\n"); + } + } + return EXIT_SUCCESS; +} + +static void do_shm (char format, int unit) +{ + struct passwd *pw; + struct shm_data *shmds, *shmdsp; + + switch (format) { + case LIMITS: + { + struct ipc_limits lim; + uint64_t tmp, pgsz = getpagesize(); + + if (ipc_shm_get_limits(&lim)) { + printf (_("unable to fetch shared memory limits\n")); + return; + } + printf (_("------ Shared Memory Limits --------\n")); + printf (_("max number of segments = %ju\n"), lim.shmmni); + ipc_print_size(unit == IPC_UNIT_DEFAULT ? IPC_UNIT_KB : unit, + _("max seg size"), lim.shmmax, "\n", 0); + + tmp = (uint64_t) lim.shmall * pgsz; + /* overflow handling, at least we don't print ridiculous small values */ + if (lim.shmall != 0 && tmp / lim.shmall != pgsz) { + tmp = UINT64_MAX - (UINT64_MAX % pgsz); + } + ipc_print_size(unit == IPC_UNIT_DEFAULT ? IPC_UNIT_KB : unit, + _("max total shared memory"), tmp, "\n", 0); + ipc_print_size(unit == IPC_UNIT_DEFAULT ? IPC_UNIT_BYTES : unit, + _("min seg size"), lim.shmmin, "\n", 0); + return; + } + case STATUS: + { + int maxid; + struct shmid_ds shmbuf; + struct shm_info *shm_info; + + maxid = shmctl (0, SHM_INFO, &shmbuf); + shm_info = (struct shm_info *) &shmbuf; + if (maxid < 0) { + printf (_("kernel not configured for shared memory\n")); + return; + } + + printf (_("------ Shared Memory Status --------\n")); + /* + * TRANSLATORS: This output format is maintained 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; + } + + /* + * Headers only + */ + 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"), + unit == IPC_UNIT_HUMAN ? _("size") : _("bytes"), + _("nattch"),_("status")); + break; + } + + /* + * Print data + */ + if (ipc_shm_get_info(-1, &shmds) < 1) + return; + + for (shmdsp = shmds; shmdsp->next != NULL; shmdsp = shmdsp->next) { + if (format == CREATOR) { + ipc_print_perms(stdout, &shmdsp->shm_perm); + continue; + } + pw = getpwuid(shmdsp->shm_perm.uid); + switch (format) { + case TIME: + if (pw) + printf ("%-10d %-10.10s", shmdsp->shm_perm.id, pw->pw_name); + else + printf ("%-10d %-10u", shmdsp->shm_perm.id, shmdsp->shm_perm.uid); + /* ctime uses static buffer: use separate calls */ + printf(" %-20.16s", shmdsp->shm_atim + ? xctime(&shmdsp->shm_atim) + 4 : _("Not set")); + printf(" %-20.16s", shmdsp->shm_dtim + ? xctime(&shmdsp->shm_dtim) + 4 : _("Not set")); + printf(" %-20.16s\n", shmdsp->shm_ctim + ? xctime(&shmdsp->shm_ctim) + 4 : _("Not set")); + break; + case PID: + if (pw) + printf ("%-10d %-10.10s", shmdsp->shm_perm.id, pw->pw_name); + else + printf ("%-10d %-10u", shmdsp->shm_perm.id, shmdsp->shm_perm.uid); + printf (" %-10u %-10u\n", + shmdsp->shm_cprid, shmdsp->shm_lprid); + break; + + default: + printf("0x%08x ", shmdsp->shm_perm.key); + if (pw) + printf ("%-10d %-10.10s", shmdsp->shm_perm.id, pw->pw_name); + else + printf ("%-10d %-10u", shmdsp->shm_perm.id, shmdsp->shm_perm.uid); + printf (" %-10o ", shmdsp->shm_perm.mode & 0777); + + if (unit == IPC_UNIT_HUMAN) + ipc_print_size(unit, NULL, shmdsp->shm_segsz, " ", 6); + else + ipc_print_size(unit, NULL, shmdsp->shm_segsz, NULL, -10); + + printf (" %-10ju %-6s %-6s\n", + shmdsp->shm_nattch, + shmdsp->shm_perm.mode & SHM_DEST ? _("dest") : " ", + shmdsp->shm_perm.mode & SHM_LOCKED ? _("locked") : " "); + break; + } + } + + ipc_shm_free_info(shmds); + return; +} + +static void do_sem (char format) +{ + struct passwd *pw; + struct sem_data *semds, *semdsp; + + switch (format) { + case LIMITS: + { + struct ipc_limits lim; + + if (ipc_sem_get_limits(&lim)) { + printf (_("unable to fetch semaphore limits\n")); + return; + } + printf (_("------ Semaphore Limits --------\n")); + printf (_("max number of arrays = %d\n"), lim.semmni); + printf (_("max semaphores per array = %d\n"), lim.semmsl); + printf (_("max semaphores system wide = %d\n"), lim.semmns); + printf (_("max ops per semop call = %d\n"), lim.semopm); + printf (_("semaphore max value = %u\n"), lim.semvmx); + return; + } + case STATUS: + { + struct seminfo seminfo; + union semun arg; + arg.array = (ushort *) (void *) &seminfo; + if (semctl (0, 0, SEM_INFO, arg) < 0) { + printf (_("kernel not configured for semaphores\n")); + return; + } + 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; + } + + /* + * Print data + */ + if (ipc_sem_get_info(-1, &semds) < 1) + return; + + for (semdsp = semds; semdsp->next != NULL; semdsp = semdsp->next) { + if (format == CREATOR) { + ipc_print_perms(stdout, &semdsp->sem_perm); + continue; + } + pw = getpwuid(semdsp->sem_perm.uid); + switch (format) { + case TIME: + if (pw) + printf ("%-8d %-10.10s", semdsp->sem_perm.id, pw->pw_name); + else + printf ("%-8d %-10u", semdsp->sem_perm.id, semdsp->sem_perm.uid); + printf (" %-26.24s", semdsp->sem_otime + ? xctime(&semdsp->sem_otime) : _("Not set")); + printf (" %-26.24s\n", semdsp->sem_ctime + ? xctime( &semdsp->sem_ctime) : _("Not set")); + break; + case PID: + break; + + default: + printf("0x%08x ", semdsp->sem_perm.key); + if (pw) + printf ("%-10d %-10.10s", semdsp->sem_perm.id, pw->pw_name); + else + printf ("%-10d %-10u", semdsp->sem_perm.id, semdsp->sem_perm.uid); + printf (" %-10o %-10ju\n", + semdsp->sem_perm.mode & 0777, + semdsp->sem_nsems); + break; + } + } + + ipc_sem_free_info(semds); + return; +} + +static void do_msg (char format, int unit) +{ + struct passwd *pw; + struct msg_data *msgds, *msgdsp; + + switch (format) { + case LIMITS: + { + struct ipc_limits lim; + + if (ipc_msg_get_limits(&lim)) { + printf (_("unable to fetch message limits\n")); + return; + } + printf (_("------ Messages Limits --------\n")); + printf (_("max queues system wide = %d\n"), lim.msgmni); + ipc_print_size(unit == IPC_UNIT_DEFAULT ? IPC_UNIT_BYTES : unit, + _("max size of message"), lim.msgmax, "\n", 0); + ipc_print_size(unit == IPC_UNIT_DEFAULT ? IPC_UNIT_BYTES : unit, + _("default max size of queue"), lim.msgmnb, "\n", 0); + return; + } + case STATUS: + { + struct msginfo msginfo; + if (msgctl (0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo) < 0) { + printf (_("kernel not configured for message queues\n")); + return; + } + printf (_("------ Messages Status --------\n")); +#ifndef __FreeBSD_kernel__ + printf (_("allocated queues = %d\n"), msginfo.msgpool); + printf (_("used headers = %d\n"), msginfo.msgmap); +#endif + ipc_print_size(unit, _("used space"), msginfo.msgtql, + unit == IPC_UNIT_DEFAULT ? _(" bytes\n") : "\n", 0); + 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"), + unit == IPC_UNIT_HUMAN ? _("size") : _("used-bytes"), + _("messages")); + break; + } + + /* + * Print data + */ + if (ipc_msg_get_info(-1, &msgds) < 1) + return; + + for (msgdsp = msgds; msgdsp->next != NULL; msgdsp = msgdsp->next) { + if (format == CREATOR) { + ipc_print_perms(stdout, &msgdsp->msg_perm); + continue; + } + pw = getpwuid(msgdsp->msg_perm.uid); + switch (format) { + case TIME: + if (pw) + printf ("%-8d %-10.10s", msgdsp->msg_perm.id, pw->pw_name); + else + printf ("%-8d %-10u", msgdsp->msg_perm.id, msgdsp->msg_perm.uid); + printf (" %-20.16s", msgdsp->q_stime + ? xctime(&msgdsp->q_stime) + 4 : _("Not set")); + printf (" %-20.16s", msgdsp->q_rtime + ? xctime(&msgdsp->q_rtime) + 4 : _("Not set")); + printf (" %-20.16s\n", msgdsp->q_ctime + ? xctime(&msgdsp->q_ctime) + 4 : _("Not set")); + break; + case PID: + if (pw) + printf ("%-8d %-10.10s", msgdsp->msg_perm.id, pw->pw_name); + else + printf ("%-8d %-10u", msgdsp->msg_perm.id, msgdsp->msg_perm.uid); + printf (" %5d %5d\n", + msgdsp->q_lspid, msgdsp->q_lrpid); + break; + + default: + printf( "0x%08x ",msgdsp->msg_perm.key ); + if (pw) + printf ("%-10d %-10.10s", msgdsp->msg_perm.id, pw->pw_name); + else + printf ("%-10d %-10u", msgdsp->msg_perm.id, msgdsp->msg_perm.uid); + printf (" %-10o ", msgdsp->msg_perm.mode & 0777); + + if (unit == IPC_UNIT_HUMAN) + ipc_print_size(unit, NULL, msgdsp->q_cbytes, " ", 6); + else + ipc_print_size(unit, NULL, msgdsp->q_cbytes, NULL, -12); + + printf (" %-12ju\n", msgdsp->q_qnum); + break; + } + } + + ipc_msg_free_info(msgds); + return; +} + +static void print_shm(int shmid, int unit) +{ + struct shm_data *shmdata; + + if (ipc_shm_get_info(shmid, &shmdata) < 1) { + warnx(_("id %d not found"), shmid); + return; + } + + printf(_("\nShared memory Segment shmid=%d\n"), shmid); + printf(_("uid=%u\tgid=%u\tcuid=%u\tcgid=%u\n"), + shmdata->shm_perm.uid, shmdata->shm_perm.gid, + shmdata->shm_perm.cuid, shmdata->shm_perm.cgid); + printf(_("mode=%#o\taccess_perms=%#o\n"), shmdata->shm_perm.mode, + shmdata->shm_perm.mode & 0777); + ipc_print_size(unit, unit == IPC_UNIT_HUMAN ? _("size=") : _("bytes="), + shmdata->shm_segsz, "\t", 0); + printf(_("lpid=%u\tcpid=%u\tnattch=%jd\n"), + shmdata->shm_lprid, shmdata->shm_cprid, + shmdata->shm_nattch); + printf(_("att_time=%-26.24s\n"), + shmdata->shm_atim ? xctime(&(shmdata->shm_atim)) : _("Not set")); + printf(_("det_time=%-26.24s\n"), + shmdata->shm_dtim ? xctime(&shmdata->shm_dtim) : _("Not set")); + printf(_("change_time=%-26.24s\n"), xctime(&shmdata->shm_ctim)); + printf("\n"); + + ipc_shm_free_info(shmdata); +} + +static void print_msg(int msgid, int unit) +{ + struct msg_data *msgdata; + + if (ipc_msg_get_info(msgid, &msgdata) < 1) { + warnx(_("id %d not found"), msgid); + return; + } + + printf(_("\nMessage Queue msqid=%d\n"), msgid); + printf(_("uid=%u\tgid=%u\tcuid=%u\tcgid=%u\tmode=%#o\n"), + msgdata->msg_perm.uid, msgdata->msg_perm.gid, + msgdata->msg_perm.cuid, msgdata->msg_perm.cgid, + msgdata->msg_perm.mode); + ipc_print_size(unit, unit == IPC_UNIT_HUMAN ? _("csize=") : _("cbytes="), + msgdata->q_cbytes, "\t", 0); + ipc_print_size(unit, unit == IPC_UNIT_HUMAN ? _("qsize=") : _("qbytes="), + msgdata->q_qbytes, "\t", 0); + printf("qnum=%jd\tlspid=%d\tlrpid=%d\n", + msgdata->q_qnum, + msgdata->q_lspid, msgdata->q_lrpid); + printf(_("send_time=%-26.24s\n"), + msgdata->q_stime ? xctime(&msgdata->q_stime) : _("Not set")); + printf(_("rcv_time=%-26.24s\n"), + msgdata->q_rtime ? xctime(&msgdata->q_rtime) : _("Not set")); + printf(_("change_time=%-26.24s\n"), + msgdata->q_ctime ? xctime(&msgdata->q_ctime) : _("Not set")); + printf("\n"); + + ipc_msg_free_info(msgdata); +} + +static void print_sem(int semid) +{ + struct sem_data *semdata; + size_t i; + + if (ipc_sem_get_info(semid, &semdata) < 1) { + warnx(_("id %d not found"), semid); + return; + } + + printf(_("\nSemaphore Array semid=%d\n"), semid); + printf(_("uid=%u\t gid=%u\t cuid=%u\t cgid=%u\n"), + semdata->sem_perm.uid, semdata->sem_perm.gid, + semdata->sem_perm.cuid, semdata->sem_perm.cgid); + printf(_("mode=%#o, access_perms=%#o\n"), + semdata->sem_perm.mode, semdata->sem_perm.mode & 0777); + printf(_("nsems = %ju\n"), semdata->sem_nsems); + printf(_("otime = %-26.24s\n"), + semdata->sem_otime ? xctime(&semdata->sem_otime) : _("Not set")); + printf(_("ctime = %-26.24s\n"), xctime(&semdata->sem_ctime)); + + printf("%-10s %-10s %-10s %-10s %-10s\n", + _("semnum"), _("value"), _("ncount"), _("zcount"), _("pid")); + + for (i = 0; i < semdata->sem_nsems; i++) { + struct sem_elem *e = &semdata->elements[i]; + printf("%-10zu %-10d %-10d %-10d %-10d\n", + i, e->semval, e->ncount, e->zcount, e->pid); + } + printf("\n"); + ipc_sem_free_info(semdata); +} |