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ipcrm: code shrink 

function                                             old     new   delta
ipcrm_main                                           698     663     -35

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
1_28_stable
Denys Vlasenko 2017-08-09 19:20:08 +02:00
parent a4d4ab04c3
commit 7943be1e13
1 changed files with 17 additions and 25 deletions
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42
util-linux/ipcrm.c
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@ -19,15 +19,6 @@
//kbuild:lib-$(CONFIG_IPCRM) += ipcrm.o //kbuild:lib-$(CONFIG_IPCRM) += ipcrm.o
//usage:#define ipcrm_trivial_usage
//usage: "[-MQS key] [-mqs id]"
//usage:#define ipcrm_full_usage "\n\n"
//usage: "Upper-case options MQS remove an object by shmkey value.\n"
//usage: "Lower-case options remove an object by shmid value.\n"
//usage: "\n -mM Remove memory segment after last detach"
//usage: "\n -qQ Remove message queue"
//usage: "\n -sS Remove semaphore"
#include "libbb.h" #include "libbb.h"
/* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */ /* X/OPEN tells us to use <sys/{types,ipc,sem}.h> for semctl() */
@ -94,6 +85,14 @@ static int remove_ids(type_id type, char **argv)
} }
#endif /* IPCRM_LEGACY */ #endif /* IPCRM_LEGACY */
//usage:#define ipcrm_trivial_usage
//usage: "[-MQS key] [-mqs id]"
//usage:#define ipcrm_full_usage "\n\n"
//usage: "Upper-case options MQS remove an object by shmkey value.\n"
//usage: "Lower-case options remove an object by shmid value.\n"
//usage: "\n -mM Remove memory segment after last detach"
//usage: "\n -qQ Remove message queue"
//usage: "\n -sS Remove semaphore"
int ipcrm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int ipcrm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ipcrm_main(int argc, char **argv) int ipcrm_main(int argc, char **argv)
@ -137,28 +136,20 @@ int ipcrm_main(int argc, char **argv)
#endif /* IPCRM_LEGACY */ #endif /* IPCRM_LEGACY */
/* process new syntax to conform with SYSV ipcrm */ /* process new syntax to conform with SYSV ipcrm */
while ((c = getopt(argc, argv, "q:m:s:Q:M:S:h?")) != -1) { while ((c = getopt(argc, argv, "q:m:s:Q:M:S:")) != -1) {
int result; int result;
int id = 0; int id;
int iskey = isupper(c); int iskey;
/* needed to delete semaphores */ /* needed to delete semaphores */
union semun arg; union semun arg;
if (c == '?') /* option not in the string */
bb_show_usage();
id = 0;
arg.val = 0; arg.val = 0;
if ((c == '?') || (c == 'h')) { iskey = !(c & 0x20); /* uppercase? */
bb_show_usage();
}
/* we don't need case information any more */
c = tolower(c);
/* make sure the option is in range: allowed are q, m, s */
if (c != 'q' && c != 'm' && c != 's') {
bb_show_usage();
}
if (iskey) { if (iskey) {
/* keys are in hex or decimal */ /* keys are in hex or decimal */
key_t key = xstrtoul(optarg, 0); key_t key = xstrtoul(optarg, 0);
@ -169,6 +160,7 @@ int ipcrm_main(int argc, char **argv)
continue; continue;
} }
c |= 0x20; /* lowercase. c is 'q', 'm' or 's' now */
/* convert key to id */ /* convert key to id */
id = ((c == 'q') ? msgget(key, 0) : id = ((c == 'q') ? msgget(key, 0) :
(c == 'm') ? shmget(key, 0, 0) : semget(key, 0, 0)); (c == 'm') ? shmget(key, 0, 0) : semget(key, 0, 0));