| /* vi: set sw=4 ts=4: */ |
| /* |
| * ipcs.c -- provides information on allocated ipc resources. |
| * |
| * 01 Sept 2004 - Rodney Radford <rradford@mindspring.com> |
| * Adapted for busybox from util-linux-2.12a. |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
| */ |
| //config:config IPCS |
| //config: bool "ipcs (11 kb)" |
| //config: default y |
| //config: help |
| //config: The ipcs utility is used to provide information on the currently |
| //config: allocated System V interprocess (IPC) objects in the system. |
| |
| //applet:IF_IPCS(APPLET_NOEXEC(ipcs, ipcs, BB_DIR_USR_BIN, BB_SUID_DROP, ipcs)) |
| |
| //kbuild:lib-$(CONFIG_IPCS) += ipcs.o |
| |
| /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */ |
| /* X/OPEN tells us to use <sys/{types,ipc,msg}.h> for msgctl() */ |
| /* X/OPEN tells us to use <sys/{types,ipc,shm}.h> for shmctl() */ |
| #include <sys/types.h> |
| #include <sys/ipc.h> |
| #include <sys/sem.h> |
| #include <sys/msg.h> |
| #include <sys/shm.h> |
| |
| #include "libbb.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; |
| unsigned long shm_tot; /* total allocated shm */ |
| unsigned long shm_rss; /* total resident shm */ |
| unsigned long shm_swp; /* total swapped shm */ |
| unsigned long swap_attempts; |
| unsigned long 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. */ |
| #if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED) |
| /* union semun is defined by including <sys/sem.h> */ |
| #else |
| /* according to X/OPEN we have to define it ourselves */ |
| union semun { |
| int val; |
| struct semid_ds *buf; |
| unsigned short *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 |
| <linux/ipc.h>, 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 |
| |
| static void print_perms(int id, struct ipc_perm *ipcp) |
| { |
| struct passwd *pw; |
| struct group *gr; |
| |
| printf("%-10d %-10o", id, ipcp->mode & 0777); |
| |
| pw = getpwuid(ipcp->cuid); |
| if (pw) printf(" %-10s", pw->pw_name); |
| else printf(" %-10d", ipcp->cuid); |
| gr = getgrgid(ipcp->cgid); |
| if (gr) printf(" %-10s", gr->gr_name); |
| else printf(" %-10d", ipcp->cgid); |
| |
| pw = getpwuid(ipcp->uid); |
| if (pw) printf(" %-10s", pw->pw_name); |
| else printf(" %-10d", ipcp->uid); |
| gr = getgrgid(ipcp->gid); |
| if (gr) printf(" %-10s\n", gr->gr_name); |
| else printf(" %-10d\n", ipcp->gid); |
| } |
| |
| static NOINLINE void do_shm(int 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 %s\n", "shared memory"); |
| return; |
| } |
| |
| switch (format) { |
| case LIMITS: |
| printf("------ Shared Memory %s --------\n", "Limits"); |
| 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" |
| "max seg size (kbytes) = %lu\n" |
| "max total shared memory (pages) = %lu\n" |
| "min seg size (bytes) = %lu\n", |
| (unsigned long) shminfo.shmmni, |
| (unsigned long) (shminfo.shmmax >> 10), |
| (unsigned long) shminfo.shmall, |
| (unsigned long) shminfo.shmmin); |
| return; |
| |
| case STATUS: |
| printf("------ Shared Memory %s --------\n", "Status"); |
| printf("segments allocated %d\n" |
| "pages allocated %lu\n" |
| "pages resident %lu\n" |
| "pages swapped %lu\n" |
| "Swap performance: %lu attempts\t%lu 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 %s --------\n", "Segment Creators/Owners"); |
| printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
| "shmid", "perms", "cuid", "cgid", "uid", "gid"); |
| break; |
| |
| case TIME: |
| printf("------ Shared Memory %s --------\n", "Attach/Detach/Change Times"); |
| printf("%-10s %-10s %-20s %-20s %-20s\n", |
| "shmid", "owner", "attached", "detached", "changed"); |
| break; |
| |
| case PID: |
| printf("------ Shared Memory %s --------\n", "Creator/Last-op"); |
| printf("%-10s %-10s %-10s %-10s\n", |
| "shmid", "owner", "cpid", "lpid"); |
| break; |
| |
| default: |
| printf("------ Shared Memory %s --------\n", "Segments"); |
| 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; |
| } |
| } |
| } |
| |
| static NOINLINE void do_sem(int 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 = (unsigned short *) (void *) &seminfo; |
| maxid = semctl(0, 0, SEM_INFO, arg); |
| if (maxid < 0) { |
| printf("kernel not configured for %s\n", "semaphores"); |
| return; |
| } |
| |
| switch (format) { |
| case LIMITS: |
| printf("------ Semaphore %s --------\n", "Limits"); |
| arg.array = (unsigned short *) (void *) &seminfo; /* damn union */ |
| if ((semctl(0, 0, IPC_INFO, arg)) < 0) |
| return; |
| printf("max number of arrays = %d\n" |
| "max semaphores per array = %d\n" |
| "max semaphores system wide = %d\n" |
| "max ops per semop call = %d\n" |
| "semaphore max value = %d\n", |
| seminfo.semmni, |
| seminfo.semmsl, |
| seminfo.semmns, seminfo.semopm, seminfo.semvmx); |
| return; |
| |
| case STATUS: |
| printf("------ Semaphore %s --------\n", "Status"); |
| printf("used arrays = %d\n" |
| "allocated semaphores = %d\n", |
| seminfo.semusz, seminfo.semaem); |
| return; |
| |
| case CREATOR: |
| printf("------ Semaphore %s --------\n", "Arrays Creators/Owners"); |
| printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
| "semid", "perms", "cuid", "cgid", "uid", "gid"); |
| break; |
| |
| case TIME: |
| printf("------ Shared Memory %s --------\n", "Operation/Change Times"); |
| printf("%-8s %-10s %-26.24s %-26.24s\n", |
| "shmid", "owner", "last-op", "last-changed"); |
| break; |
| |
| case PID: |
| break; |
| |
| default: |
| printf("------ Semaphore %s --------\n", "Arrays"); |
| 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); |
| /* ctime uses static buffer: use separate calls */ |
| 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 %-10.9s", semid, pw->pw_name); |
| else |
| printf("%-10d %-9d", 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; |
| } |
| } |
| } |
| |
| static NOINLINE void do_msg(int 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 %s\n", "message queues"); |
| return; |
| } |
| |
| switch (format) { |
| case LIMITS: |
| if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0) |
| return; |
| printf("------ Message%s --------\n", "s: Limits"); |
| printf("max queues system wide = %d\n" |
| "max size of message (bytes) = %d\n" |
| "default max size of queue (bytes) = %d\n", |
| msginfo.msgmni, msginfo.msgmax, msginfo.msgmnb); |
| return; |
| |
| case STATUS: |
| printf("------ Message%s --------\n", "s: Status"); |
| printf("allocated queues = %d\n" |
| "used headers = %d\n" |
| "used space = %d bytes\n", |
| msginfo.msgpool, msginfo.msgmap, msginfo.msgtql); |
| return; |
| |
| case CREATOR: |
| printf("------ Message%s --------\n", " Queues: Creators/Owners"); |
| printf("%-10s %-10s %-10s %-10s %-10s %-10s\n", |
| "msqid", "perms", "cuid", "cgid", "uid", "gid"); |
| break; |
| |
| case TIME: |
| printf("------ Message%s --------\n", " Queues Send/Recv/Change Times"); |
| printf("%-8s %-10s %-20s %-20s %-20s\n", |
| "msqid", "owner", "send", "recv", "change"); |
| break; |
| |
| case PID: |
| printf("------ Message%s --------\n", " Queues PIDs"); |
| printf("%-10s %-10s %-10s %-10s\n", |
| "msqid", "owner", "lspid", "lrpid"); |
| break; |
| |
| default: |
| printf("------ Message%s --------\n", " Queues"); |
| 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; |
| } |
| } |
| } |
| |
| static void print_shm(int shmid) |
| { |
| struct shmid_ds shmds; |
| struct ipc_perm *ipcp = &shmds.shm_perm; |
| |
| if (shmctl(shmid, IPC_STAT, &shmds) == -1) { |
| bb_simple_perror_msg("shmctl"); |
| return; |
| } |
| |
| printf("\nShared memory Segment shmid=%d\n" |
| "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\n" |
| "mode=%#o\taccess_perms=%#o\n" |
| "bytes=%ld\tlpid=%d\tcpid=%d\tnattch=%ld\n", |
| shmid, |
| ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
| ipcp->mode, ipcp->mode & 0777, |
| (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\n", ctime(&shmds.shm_ctime)); |
| } |
| |
| static void print_msg(int msqid) |
| { |
| struct msqid_ds buf; |
| struct ipc_perm *ipcp = &buf.msg_perm; |
| |
| if (msgctl(msqid, IPC_STAT, &buf) == -1) { |
| bb_simple_perror_msg("msgctl"); |
| return; |
| } |
| |
| printf("\nMessage Queue msqid=%d\n" |
| "uid=%d\tgid=%d\tcuid=%d\tcgid=%d\tmode=%#o\n" |
| "cbytes=%ld\tqbytes=%ld\tqnum=%ld\tlspid=%d\tlrpid=%d\n", |
| msqid, ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, ipcp->mode, |
| /* |
| * 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\n", |
| buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set"); |
| } |
| |
| static void print_sem(int semid) |
| { |
| struct semid_ds semds; |
| struct ipc_perm *ipcp = &semds.sem_perm; |
| union semun arg; |
| unsigned int i; |
| |
| arg.buf = &semds; |
| if (semctl(semid, 0, IPC_STAT, arg)) { |
| bb_simple_perror_msg("semctl"); |
| return; |
| } |
| |
| printf("\nSemaphore Array semid=%d\n" |
| "uid=%d\t gid=%d\t cuid=%d\t cgid=%d\n" |
| "mode=%#o, access_perms=%#o\n" |
| "nsems = %ld\n" |
| "otime = %-26.24s\n", |
| semid, |
| ipcp->uid, ipcp->gid, ipcp->cuid, ipcp->cgid, |
| ipcp->mode, ipcp->mode & 0777, |
| (long) semds.sem_nsems, |
| semds.sem_otime ? ctime(&semds.sem_otime) : "Not set"); |
| printf("ctime = %-26.24s\n" |
| "%-10s %-10s %-10s %-10s %-10s\n", |
| ctime(&semds.sem_ctime), |
| "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) { |
| bb_simple_perror_msg_and_die("semctl"); |
| } |
| printf("%-10u %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid); |
| } |
| bb_putchar('\n'); |
| } |
| |
| //usage:#define ipcs_trivial_usage |
| //usage: "[[-smq] -i SHMID] | [[-asmq] [-tcplu]]" |
| //usage:#define ipcs_full_usage "\n\n" |
| //usage: " -i ID Show specific resource" |
| //usage: "\nResource specification:" |
| //usage: "\n -m Shared memory segments" |
| //usage: "\n -q Message queues" |
| //usage: "\n -s Semaphore arrays" |
| //usage: "\n -a All (default)" |
| //usage: "\nOutput format:" |
| //usage: "\n -t Time" |
| //usage: "\n -c Creator" |
| //usage: "\n -p Pid" |
| //usage: "\n -l Limits" |
| //usage: "\n -u Summary" |
| |
| int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int ipcs_main(int argc UNUSED_PARAM, char **argv) |
| { |
| int format = 0; |
| unsigned opt; |
| char *opt_i; |
| |
| opt = getopt32(argv, "i:aqsmtcplu", &opt_i); |
| #define flag_msg (1<<2) |
| #define flag_sem (1<<3) |
| #define flag_shm (1<<4) |
| if (opt & (1<<5)) format = TIME; // -t |
| if (opt & (1<<6)) format = CREATOR; // -c |
| if (opt & (1<<7)) format = PID; // -p |
| if (opt & (1<<8)) format = LIMITS; // -l |
| if (opt & (1<<9)) format = STATUS; // -u |
| |
| if (opt & (1<<0)) { // -i |
| int id; |
| |
| id = xatoi(opt_i); |
| if (opt & flag_shm) { |
| print_shm(id); |
| fflush_stdout_and_exit(EXIT_SUCCESS); |
| } |
| if (opt & flag_sem) { |
| print_sem(id); |
| fflush_stdout_and_exit(EXIT_SUCCESS); |
| } |
| if (opt & flag_msg) { |
| print_msg(id); |
| fflush_stdout_and_exit(EXIT_SUCCESS); |
| } |
| bb_show_usage(); |
| } |
| |
| if ((opt & (1<<1)) // -a |
| || !(opt & (flag_msg | flag_sem | flag_shm)) // none of -q,-s,-m == all |
| ) { |
| opt |= flag_msg | flag_sem | flag_shm; |
| } |
| |
| bb_putchar('\n'); |
| |
| if (opt & flag_msg) { |
| do_msg(format); |
| bb_putchar('\n'); |
| } |
| if (opt & flag_shm) { |
| do_shm(format); |
| bb_putchar('\n'); |
| } |
| if (opt & flag_sem) { |
| do_sem(format); |
| bb_putchar('\n'); |
| } |
| fflush_stdout_and_exit(EXIT_SUCCESS); |
| } |