- pull from busybox_scratch: r15829:15850

  Various fixes, cleanups and shrinkage:
saves 952 Bytes:
   text    data     bss     dec     hex filename
1087742   15853  790632 1894227  1ce753 ../busybox/busybox.old
1086790   15853  790632 1893275  1ce39b busybox
via:
# scripts/bloat-o-meter ../busybox/busybox_unstripped.old busybox_unstripped 
function                                             old     new   delta
ipcrm_main                                           756     822     +66
getval                                                 -      61     +61
maybe_set_utc                                          -      40     +40
udhcpc_main                                         2896    2912     +16
md5_hash_block                                       428     437      +9
opt                                                    8      16      +8
qgravechar                                           106     110      +4
make_bitmap                                          292     295      +3
inflate_unzip                                       2056    2059      +3
add_partition                                       1412    1414      +2
__parsespent                                         156     158      +2
qrealloc                                              41      42      +1
format                                                 -       1      +1
catv_main                                            313     314      +1
watch_main                                           293     292      -1
varunset                                              81      80      -1
part                                                   1       -      -1
check_if_skip                                        837     836      -1
start_stop_daemon_main                               840     837      -3
create_lost_and_found                                175     172      -3
supress_non_delimited_lines                            4       -      -4
static.l                                               4       -      -4
static.c                                               5       1      -4
bsd_sum_file                                         237     233      -4
eval2                                                338     332      -6
arithmetic_common                                    166     158      -8
cmpfunc                                               22       5     -17
cksum_main                                           294     275     -19
cmp_main                                             465     439     -26
dd_main                                             1535    1508     -27
rmmod_main                                           376     333     -43
cut_file                                             727     644     -83
ipcs_main                                           3809    3721     -88
cut_main                                             722     614    -108
date_main                                           1443    1263    -180
remove_ids                                           222       -    -222
------------------------------------------------------------------------------
(add/remove: 3/4 grow/shrink: 11/18 up/down: 217/-853)       Total: -636 bytes

1 files changed, 283 insertions, 301 deletions

diff --git a/util-linux/ipcs.c b/util-linux/ipcs.c
index fbc75cb..c7c8376 100644
--- a/util-linux/ipcs.c
+++ b/util-linux/ipcs.c
@@ -8,9 +8,7 @@
  * Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <getopt.h>
+#include "busybox.h"
 #include <errno.h>
 #include <time.h>
 #include <pwd.h>
@@ -25,15 +23,15 @@
 #include <sys/msg.h>
 #include <sys/shm.h>
 
-#include "busybox.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 */
+#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 */
@@ -46,12 +44,12 @@
 #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;
+	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
 
@@ -98,12 +96,14 @@ union semun {
 #define TIME 4
 #define PID 5
 
+static char format;
 
-static void print_perms (int id, struct ipc_perm *ipcp) {
+static void print_perms(int id, struct ipc_perm *ipcp)
+{
 	struct passwd *pw;
 	struct group *gr;
 
-	bb_printf ("%-10d %-10o", id, ipcp->mode & 0777);
+	bb_printf("%-10d %-10o", id, ipcp->mode & 0777);
 
 	if ((pw = getpwuid(ipcp->cuid)))
 		bb_printf(" %-10s", pw->pw_name);
@@ -125,7 +125,7 @@ static void print_perms (int id, struct ipc_perm *ipcp) {
 }
 
 
-static void do_shm (char format)
+static void do_shm(void)
 {
 	int maxid, shmid, id;
 	struct shmid_ds shmseg;
@@ -134,127 +134,125 @@ static void do_shm (char format)
 	struct ipc_perm *ipcp = &shmseg.shm_perm;
 	struct passwd *pw;
 
-	maxid = shmctl (0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
+	maxid = shmctl(0, SHM_INFO, (struct shmid_ds *) (void *) &shm_info);
 	if (maxid < 0) {
-		bb_printf ("kernel not configured for shared memory\n");
+		bb_printf("kernel not configured for shared memory\n");
 		return;
 	}
 
 	switch (format) {
 	case LIMITS:
-		bb_printf ("------ Shared Memory Limits --------\n");
-		if ((shmctl (0, IPC_INFO, (struct shmid_ds *) (void *) &shminfo)) < 0 )
+		bb_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 */
-		bb_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);
+		bb_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:
-		bb_printf ("------ Shared Memory Status --------\n"
-			"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);
+		bb_printf("------ Shared Memory Status --------\n"
+				  "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:
-		bb_printf ("------ Shared Memory Segment Creators/Owners --------\n"
-			"%-10s %-10s %-10s %-10s %-10s %-10s\n",
-			"shmid","perms","cuid","cgid","uid","gid");
+		bb_printf("------ Shared Memory Segment Creators/Owners --------\n"
+				  "%-10s %-10s %-10s %-10s %-10s %-10s\n",
+				  "shmid", "perms", "cuid", "cgid", "uid", "gid");
 		break;
 
 	case TIME:
-		bb_printf ("------ Shared Memory Attach/Detach/Change Times --------\n"
-			"%-10s %-10s %-20s %-20s %-20s\n",
-			"shmid","owner","attached","detached","changed");
+		bb_printf("------ Shared Memory Attach/Detach/Change Times --------\n"
+				  "%-10s %-10s %-20s %-20s %-20s\n",
+				  "shmid", "owner", "attached", "detached", "changed");
 		break;
 
 	case PID:
-		bb_printf ("------ Shared Memory Creator/Last-op --------\n"
-			"%-10s %-10s %-10s %-10s\n",
-			"shmid","owner","cpid","lpid");
+		bb_printf("------ Shared Memory Creator/Last-op --------\n"
+				  "%-10s %-10s %-10s %-10s\n",
+				  "shmid", "owner", "cpid", "lpid");
 		break;
 
 	default:
-		bb_printf ("------ Shared Memory Segments --------\n"
-			"%-10s %-10s %-10s %-10s %-10s %-10s %-12s\n",
-			"key","shmid","owner","perms","bytes","nattch","status");
+		bb_printf("------ Shared Memory Segments --------\n"
+				  "%-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);
+		shmid = shmctl(id, SHM_STAT, &shmseg);
 		if (shmid < 0)
 			continue;
-		if (format == CREATOR)  {
-			print_perms (shmid, ipcp);
+		if (format == CREATOR) {
+			print_perms(shmid, ipcp);
 			continue;
 		}
 		pw = getpwuid(ipcp->uid);
 		switch (format) {
 		case TIME:
 			if (pw)
-				bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+				bb_printf("%-10d %-10.10s", shmid, pw->pw_name);
 			else
-				bb_printf ("%-10d %-10d", shmid, ipcp->uid);
+				bb_printf("%-10d %-10d", shmid, ipcp->uid);
 			/* ctime uses static buffer: use separate calls */
-			bb_printf("  %-20.16s", shmseg.shm_atime
-				   ? ctime(&shmseg.shm_atime) + 4 : "Not set");
+			bb_printf(" %-20.16s", shmseg.shm_atime
+					  ? ctime(&shmseg.shm_atime) + 4 : "Not set");
 			bb_printf(" %-20.16s", shmseg.shm_dtime
-				   ? ctime(&shmseg.shm_dtime) + 4 : "Not set");
+					  ? ctime(&shmseg.shm_dtime) + 4 : "Not set");
 			bb_printf(" %-20.16s\n", shmseg.shm_ctime
-				   ? ctime(&shmseg.shm_ctime) + 4 : "Not set");
+					  ? ctime(&shmseg.shm_ctime) + 4 : "Not set");
 			break;
 		case PID:
 			if (pw)
-				bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+				bb_printf("%-10d %-10.10s", shmid, pw->pw_name);
 			else
-				bb_printf ("%-10d %-10d", shmid, ipcp->uid);
-			bb_printf (" %-10d %-10d\n",
-				shmseg.shm_cpid, shmseg.shm_lpid);
+				bb_printf("%-10d %-10d", shmid, ipcp->uid);
+			bb_printf(" %-10d %-10d\n", shmseg.shm_cpid, shmseg.shm_lpid);
 			break;
 
 		default:
-				bb_printf("0x%08x ",ipcp->KEY );
+			bb_printf("0x%08x ", ipcp->KEY);
 			if (pw)
-				bb_printf ("%-10d %-10.10s", shmid, pw->pw_name);
+				bb_printf("%-10d %-10.10s", shmid, pw->pw_name);
 			else
-				bb_printf ("%-10d %-10d", shmid, ipcp->uid);
-			bb_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" : " ");
+				bb_printf("%-10d %-10d", shmid, ipcp->uid);
+			bb_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;
 }
 
 
-static void do_sem (char format)
+static void do_sem(void)
 {
 	int maxid, semid, id;
 	struct semid_ds semary;
@@ -263,107 +261,104 @@ static void do_sem (char format)
 	struct passwd *pw;
 	union semun arg;
 
-	arg.array = (ushort *)  (void *) &seminfo;
-	maxid = semctl (0, 0, SEM_INFO, arg);
+	arg.array = (ushort *) (void *) &seminfo;
+	maxid = semctl(0, 0, SEM_INFO, arg);
 	if (maxid < 0) {
-		bb_printf ("kernel not configured for semaphores\n");
+		bb_printf("kernel not configured for semaphores\n");
 		return;
 	}
 
 	switch (format) {
 	case LIMITS:
-		bb_printf ("------ Semaphore Limits --------\n");
-		arg.array = (ushort *) (void *) &seminfo; /* damn union */
-		if ((semctl (0, 0, IPC_INFO, arg)) < 0 )
+		bb_printf("------ Semaphore Limits --------\n");
+		arg.array = (ushort *) (void *) &seminfo;	/* damn union */
+		if ((semctl(0, 0, IPC_INFO, arg)) < 0)
 			return;
-		bb_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);
+		bb_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:
-		bb_printf ("------ Semaphore Status --------\n"
-			"used arrays = %d\n"
-			"allocated semaphores = %d\n",
-			seminfo.semusz,
-			seminfo.semaem);
+		bb_printf("------ Semaphore Status --------\n"
+				  "used arrays = %d\n"
+				  "allocated semaphores = %d\n",
+				  seminfo.semusz, seminfo.semaem);
 		return;
 
 	case CREATOR:
-		bb_printf ("------ Semaphore Arrays Creators/Owners --------\n"
-			"%-10s %-10s %-10s %-10s %-10s %-10s\n",
-			"semid","perms","cuid","cgid","uid","gid");
+		bb_printf("------ Semaphore Arrays Creators/Owners --------\n"
+				  "%-10s %-10s %-10s %-10s %-10s %-10s\n",
+				  "semid", "perms", "cuid", "cgid", "uid", "gid");
 		break;
 
 	case TIME:
-		bb_printf ("------ Shared Memory Operation/Change Times --------\n"
-			"%-8s %-10s %-26.24s %-26.24s\n",
-			"shmid","owner","last-op","last-changed");
+		bb_printf("------ Shared Memory Operation/Change Times --------\n"
+				  "%-8s %-10s %-26.24s %-26.24s\n",
+				  "shmid", "owner", "last-op", "last-changed");
 		break;
 
 	case PID:
 		break;
 
 	default:
-		bb_printf ("------ Semaphore Arrays --------\n"
-			"%-10s %-10s %-10s %-10s %-10s\n",
-			"key","semid","owner","perms","nsems");
+		bb_printf("------ Semaphore Arrays --------\n"
+				  "%-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);
+		semid = semctl(id, 0, SEM_STAT, arg);
 		if (semid < 0)
 			continue;
-		if (format == CREATOR)  {
-			print_perms (semid, ipcp);
+		if (format == CREATOR) {
+			print_perms(semid, ipcp);
 			continue;
 		}
 		pw = getpwuid(ipcp->uid);
 		switch (format) {
 		case TIME:
 			if (pw)
-				bb_printf ("%-8d %-10.10s", semid, pw->pw_name);
+				bb_printf("%-8d %-10.10s", semid, pw->pw_name);
 			else
-				bb_printf ("%-8d %-10d", semid, ipcp->uid);
-			bb_printf ("  %-26.24s", semary.sem_otime
-				? ctime(&semary.sem_otime) : "Not set");
-			bb_printf (" %-26.24s\n", semary.sem_ctime
-				? ctime(&semary.sem_ctime) : "Not set");
+				bb_printf("%-8d %-10d", semid, ipcp->uid);
+			/* ctime uses static buffer: use separate calls */
+			bb_printf("  %-26.24s", semary.sem_otime
+					  ? ctime(&semary.sem_otime) : "Not set");
+			bb_printf(" %-26.24s\n", semary.sem_ctime
+					  ? ctime(&semary.sem_ctime) : "Not set");
 			break;
 		case PID:
 			break;
 
 		default:
-				bb_printf("0x%08x ", ipcp->KEY);
+			bb_printf("0x%08x ", ipcp->KEY);
 			if (pw)
-				bb_printf ("%-10d %-10.9s", semid, pw->pw_name);
+				bb_printf("%-10d %-10.9s", semid, pw->pw_name);
 			else
-				bb_printf ("%-10d %-9d", semid, ipcp->uid);
-					bb_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);
+				bb_printf("%-10d %-9d", semid, ipcp->uid);
+			bb_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 void do_msg (char format)
+static void do_msg(void)
 {
 	int maxid, msqid, id;
 	struct msqid_ds msgque;
@@ -371,178 +366,165 @@ static void do_msg (char format)
 	struct ipc_perm *ipcp = &msgque.msg_perm;
 	struct passwd *pw;
 
-	maxid = msgctl (0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
+	maxid = msgctl(0, MSG_INFO, (struct msqid_ds *) (void *) &msginfo);
 	if (maxid < 0) {
-		bb_printf ("kernel not configured for message queues\n");
+		bb_printf("kernel not configured for message queues\n");
 		return;
 	}
 
 	switch (format) {
 	case LIMITS:
-		if ((msgctl (0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0 )
+		if ((msgctl(0, IPC_INFO, (struct msqid_ds *) (void *) &msginfo)) < 0)
 			return;
-		bb_printf ("------ Messages: Limits --------\n"
-			"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);
+		bb_printf("------ Messages: Limits --------\n"
+				  "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:
-		bb_printf ("------ Messages: Status --------\n"
-			"allocated queues = %d\n"
-			"used headers = %d\n"
-			"used space = %d bytes\n",
-			msginfo.msgpool,
-			msginfo.msgmap,
-			msginfo.msgtql);
+		bb_printf("------ Messages: Status --------\n"
+				  "allocated queues = %d\n"
+				  "used headers = %d\n"
+				  "used space = %d bytes\n",
+				  msginfo.msgpool, msginfo.msgmap, msginfo.msgtql);
 		return;
 
 	case CREATOR:
-		bb_printf ("------ Message Queues: Creators/Owners --------\n"
-			"%-10s %-10s %-10s %-10s %-10s %-10s\n",
-			"msqid","perms","cuid","cgid","uid","gid");
+		bb_printf("------ Message Queues: Creators/Owners --------\n"
+				  "%-10s %-10s %-10s %-10s %-10s %-10s\n",
+				  "msqid", "perms", "cuid", "cgid", "uid", "gid");
 		break;
 
 	case TIME:
-		bb_printf ("------ Message Queues Send/Recv/Change Times --------\n"
-			"%-8s %-10s %-20s %-20s %-20s\n",
-			"msqid","owner","send","recv","change");
+		bb_printf("------ Message Queues Send/Recv/Change Times --------\n"
+				  "%-8s %-10s %-20s %-20s %-20s\n",
+				  "msqid", "owner", "send", "recv", "change");
 		break;
 
 	case PID:
-		bb_printf ("------ Message Queues PIDs --------\n"
-			"%-10s %-10s %-10s %-10s\n",
-			"msqid","owner","lspid","lrpid");
+		bb_printf("------ Message Queues PIDs --------\n"
+				  "%-10s %-10s %-10s %-10s\n",
+				  "msqid", "owner", "lspid", "lrpid");
 		break;
 
 	default:
-		bb_printf ("------ Message Queues --------\n"
-			"%-10s %-10s %-10s %-10s %-12s %-12s\n",
-			"key","msqid","owner","perms","used-bytes","messages");
+		bb_printf("------ Message Queues --------\n"
+				  "%-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);
+		msqid = msgctl(id, MSG_STAT, &msgque);
 		if (msqid < 0)
 			continue;
-		if (format == CREATOR)  {
-			print_perms (msqid, ipcp);
+		if (format == CREATOR) {
+			print_perms(msqid, ipcp);
 			continue;
 		}
 		pw = getpwuid(ipcp->uid);
 		switch (format) {
 		case TIME:
 			if (pw)
-				bb_printf ("%-8d %-10.10s", msqid, pw->pw_name);
+				bb_printf("%-8d %-10.10s", msqid, pw->pw_name);
 			else
-				bb_printf ("%-8d %-10d", msqid, ipcp->uid);
-			bb_printf (" %-20.16s", msgque.msg_stime
-				? ctime(&msgque.msg_stime) + 4 : "Not set");
-			bb_printf (" %-20.16s", msgque.msg_rtime
-				? ctime(&msgque.msg_rtime) + 4 : "Not set");
-			bb_printf (" %-20.16s\n", msgque.msg_ctime
-				? ctime(&msgque.msg_ctime) + 4 : "Not set");
+				bb_printf("%-8d %-10d", msqid, ipcp->uid);
+			bb_printf(" %-20.16s", msgque.msg_stime
+					  ? ctime(&msgque.msg_stime) + 4 : "Not set");
+			bb_printf(" %-20.16s", msgque.msg_rtime
+					  ? ctime(&msgque.msg_rtime) + 4 : "Not set");
+			bb_printf(" %-20.16s\n", msgque.msg_ctime
+					  ? ctime(&msgque.msg_ctime) + 4 : "Not set");
 			break;
 		case PID:
 			if (pw)
-				bb_printf ("%-8d %-10.10s", msqid, pw->pw_name);
+				bb_printf("%-8d %-10.10s", msqid, pw->pw_name);
 			else
-				bb_printf ("%-8d %-10d", msqid, ipcp->uid);
-			bb_printf ("  %5d     %5d\n",
-				msgque.msg_lspid, msgque.msg_lrpid);
+				bb_printf("%-8d %-10d", msqid, ipcp->uid);
+			bb_printf("  %5d     %5d\n", msgque.msg_lspid, msgque.msg_lrpid);
 			break;
 
 		default:
-				bb_printf( "0x%08x ",ipcp->KEY );
+			bb_printf("0x%08x ", ipcp->KEY);
 			if (pw)
-				bb_printf ("%-10d %-10.10s", msqid, pw->pw_name);
+				bb_printf("%-10d %-10.10s", msqid, pw->pw_name);
 			else
-				bb_printf ("%-10d %-10d", msqid, ipcp->uid);
-					bb_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);
+				bb_printf("%-10d %-10d", msqid, ipcp->uid);
+			bb_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;
 }
 
 
-static void print_shm (int shmid)
+static 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 ");
+	if (shmctl(shmid, IPC_STAT, &shmds) == -1) {
+		bb_perror_msg("shmctl");
 		return;
 	}
 
-	bb_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"
-		"att_time=%-26.24s\n"
-		"det_time=%-26.24s\n"
-		"change_time=%-26.24s\n"
-		"\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,
-		shmds.shm_atime ? ctime (&shmds.shm_atime) : "Not set",
-		shmds.shm_dtime ? ctime (&shmds.shm_dtime) : "Not set",
-		ctime (&shmds.shm_ctime));
-	return;
+	bb_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);
+	bb_printf("att_time=%-26.24s\n",
+			  shmds.shm_atime ? ctime(&shmds.shm_atime) : "Not set");
+	bb_printf("det_time=%-26.24s\n",
+			  shmds.shm_dtime ? ctime(&shmds.shm_dtime) : "Not set");
+	bb_printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime));
 }
 
 
-static void print_msg (int msqid)
+static 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 ");
+	if (msgctl(msqid, IPC_STAT, &buf) == -1) {
+		bb_perror_msg("msgctl");
 		return;
 	}
 
-	bb_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"
-		"send_time=%-26.24s\n"
-		"rcv_time=%-26.24s\n"
-		"change_time=%-26.24s\n"
-		"\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,
-		buf.msg_stime ? ctime (&buf.msg_stime) : "Not set",
-		buf.msg_rtime ? ctime (&buf.msg_rtime) : "Not set",
-		buf.msg_ctime ? ctime (&buf.msg_ctime) : "Not set");
-	return;
+	bb_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);
+
+	bb_printf("send_time=%-26.24s\n",
+			  buf.msg_stime ? ctime(&buf.msg_stime) : "Not set");
+	bb_printf("rcv_time=%-26.24s\n",
+			  buf.msg_rtime ? ctime(&buf.msg_rtime) : "Not set");
+	bb_printf("change_time=%-26.24s\n\n",
+			  buf.msg_ctime ? ctime(&buf.msg_ctime) : "Not set");
 }
 
-static void print_sem (int semid)
+static void print_sem(int semid)
 {
 	struct semid_ds semds;
 	struct ipc_perm *ipcp = &semds.sem_perm;
@@ -550,66 +532,69 @@ static void print_sem (int semid)
 	unsigned int i;
 
 	arg.buf = &semds;
-	if (semctl (semid, 0, IPC_STAT, arg) < 0) {
-		perror ("semctl ");
+	if (semctl(semid, 0, IPC_STAT, arg)) {
+		bb_perror_msg("semctl");
 		return;
 	}
 
-	bb_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"
-		"ctime = %-26.24s\n"
-		"%-10s %-10s %-10s %-10s %-10s\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",
-		ctime (&semds.sem_ctime),
-		"semnum","value","ncount","zcount","pid");
+	bb_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");
+	bb_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++) {
+	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);
+
+		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 ");
-			bb_fflush_stdout_and_exit (1);
+			bb_perror_msg_and_die("semctl");
 		}
-		bb_printf ("%-10d %-10d %-10d %-10d %-10d\n",
-			i, val, ncnt, zcnt, pid);
+		bb_printf("%-10d %-10d %-10d %-10d %-10d\n", i, val, ncnt, zcnt, pid);
 	}
-	bb_printf ("\n");
-	return;
+	bb_printf("\n");
 }
 
-int ipcs_main (int argc, char **argv) {
-	int opt, msg = 0, sem = 0, shm = 0, id=0, print=0;
-	char format = 0;
-	char options[] = "atclupsmqi:ih?";
-
-	while ((opt = getopt (argc, argv, options)) != -1) {
+int ipcs_main(int argc, char **argv)
+{
+	int opt, id = 0;
+	unsigned flags = 0;
+#define flag_print	(1<<0)
+#define flag_msg	(1<<1)
+#define flag_sem	(1<<2)
+#define flag_shm	(1<<3)
+	const char *const options = "atclupsmqi:ih?";
+
+	while ((opt = getopt(argc, argv, options)) != -1) {
 		switch (opt) {
 		case 'i':
-			id = atoi (optarg);
-			print = 1;
+			id = atoi(optarg);
+			flags |= flag_print;
 			break;
 		case 'a':
-			msg = shm = sem = 1;
+			flags |= flag_msg | flag_sem | flag_shm;
 			break;
 		case 'q':
-			msg = 1;
+			flags |= flag_msg;
 			break;
 		case 's':
-			sem = 1;
+			flags |= flag_sem;
 			break;
 		case 'm':
-			shm = 1;
+			flags |= flag_shm;
 			break;
 		case 't':
 			format = TIME;
@@ -629,43 +614,40 @@ int ipcs_main (int argc, char **argv) {
 		case 'h':
 		case '?':
 			bb_show_usage();
-			bb_fflush_stdout_and_exit (0);
 		}
 	}
 
-	if  (print) {
-		if (shm) {
-			print_shm (id);
-			bb_fflush_stdout_and_exit (0);
+	if (flags & flag_print) {
+		if (flags & flag_shm) {
+			print_shm(id);
+			bb_fflush_stdout_and_exit(0);
 		}
-		if (sem) {
-			print_sem (id);
-			bb_fflush_stdout_and_exit (0);
+		if (flags & flag_sem) {
+			print_sem(id);
+			bb_fflush_stdout_and_exit(0);
 		}
-		if (msg) {
-			print_msg (id);
-			bb_fflush_stdout_and_exit (0);
+		if (flags & flag_msg) {
+			print_msg(id);
+			bb_fflush_stdout_and_exit(0);
 		}
 		bb_show_usage();
-		bb_fflush_stdout_and_exit (0);
 	}
 
-	if ( !shm && !msg && !sem)
-		msg = sem = shm = 1;
-	bb_printf ("\n");
+	if (!(flags & (flag_shm | flag_msg | flag_sem)))
+		flags |= flag_msg | flag_shm | flag_sem;
+	bb_printf("\n");
 
-	if (shm) {
-		do_shm (format);
-		bb_printf ("\n");
+	if (flags & flag_shm) {
+		do_shm();
+		bb_printf("\n");
 	}
-	if (sem) {
-		do_sem (format);
-		bb_printf ("\n");
+	if (flags & flag_sem) {
+		do_sem();
+		bb_printf("\n");
 	}
-	if (msg) {
-		do_msg (format);
-		bb_printf ("\n");
+	if (flags & flag_msg) {
+		do_msg();
+		bb_printf("\n");
 	}
-	return 0;
+	return EXIT_SUCCESS;
 }
-