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authorDenys Vlasenko <vda.linux@googlemail.com>2018-03-08 13:10:23 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2018-03-08 13:10:23 +0100
commitf7fa8001b7db605b8ab18c688051583f6d5b687f (patch)
tree71c1bf97299b222096c92d3ae399b065aeabf1c3
parent694bc0634587e2535567c1732a372ec79ba0e0c7 (diff)
downloadbusybox-f7fa8001b7db605b8ab18c688051583f6d5b687f.tar.gz
ipcs: code shrink
function old new delta packed_usage 32539 32543 +4 format 1 - -1 do_shm 883 880 -3 do_sem 636 633 -3 do_msg 782 779 -3 ipcs_main 1049 1014 -35 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 1/4 up/down: 4/-45) Total: -41 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r--util-linux/ipcs.c39
1 files changed, 15 insertions, 24 deletions
diff --git a/util-linux/ipcs.c b/util-linux/ipcs.c
index 7092ecd92..dc107eb95 100644
--- a/util-linux/ipcs.c
+++ b/util-linux/ipcs.c
@@ -101,8 +101,6 @@ union semun {
#define TIME 4
#define PID 5
-static char format;
-
static void print_perms(int id, struct ipc_perm *ipcp)
{
struct passwd *pw;
@@ -125,8 +123,7 @@ static void print_perms(int id, struct ipc_perm *ipcp)
else printf(" %-10d\n", ipcp->gid);
}
-
-static NOINLINE void do_shm(void)
+static NOINLINE void do_shm(int format)
{
int maxid, shmid, id;
struct shmid_ds shmseg;
@@ -252,8 +249,7 @@ static NOINLINE void do_shm(void)
}
}
-
-static NOINLINE void do_sem(void)
+static NOINLINE void do_sem(int format)
{
int maxid, semid, id;
struct semid_ds semary;
@@ -358,8 +354,7 @@ static NOINLINE void do_sem(void)
}
}
-
-static NOINLINE void do_msg(void)
+static NOINLINE void do_msg(int format)
{
int maxid, msqid, id;
struct msqid_ds msgque;
@@ -466,7 +461,6 @@ static NOINLINE void do_msg(void)
}
}
-
static void print_shm(int shmid)
{
struct shmid_ds shmds;
@@ -493,7 +487,6 @@ static void print_shm(int shmid)
printf("change_time=%-26.24s\n\n", ctime(&shmds.shm_ctime));
}
-
static void print_msg(int msqid)
{
struct msqid_ds buf;
@@ -570,7 +563,7 @@ static void print_sem(int semid)
}
//usage:#define ipcs_trivial_usage
-//usage: "[[-smq] -i shmid] | [[-asmq] [-tcplu]]"
+//usage: "[[-smq] -i SHMID] | [[-asmq] [-tcplu]]"
//usage:#define ipcs_full_usage "\n\n"
//usage: " -i Show specific resource"
//usage: "\nResource specification:"
@@ -588,20 +581,15 @@ static void print_sem(int semid)
int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int ipcs_main(int argc UNUSED_PARAM, char **argv)
{
- int id = 0;
+ int format = 0;
unsigned flags = 0;
unsigned opt;
char *opt_i;
-#define flag_print (1<<0)
-#define flag_msg (1<<1)
-#define flag_sem (1<<2)
-#define flag_shm (1<<3)
+#define flag_msg (1<<0)
+#define flag_sem (1<<1)
+#define flag_shm (1<<2)
opt = getopt32(argv, "i:aqsmtcplu", &opt_i);
- if (opt & 0x1) { // -i
- id = xatoi(opt_i);
- flags |= flag_print;
- }
if (opt & 0x2) flags |= flag_msg | flag_sem | flag_shm; // -a
if (opt & 0x4) flags |= flag_msg; // -q
if (opt & 0x8) flags |= flag_sem; // -s
@@ -612,7 +600,10 @@ int ipcs_main(int argc UNUSED_PARAM, char **argv)
if (opt & 0x100) format = LIMITS; // -l
if (opt & 0x200) format = STATUS; // -u
- if (flags & flag_print) {
+ if (opt & 1) { // -i
+ int id;
+
+ id = xatoi(opt_i);
if (flags & flag_shm) {
print_shm(id);
fflush_stdout_and_exit(EXIT_SUCCESS);
@@ -633,15 +624,15 @@ int ipcs_main(int argc UNUSED_PARAM, char **argv)
bb_putchar('\n');
if (flags & flag_msg) {
- do_msg();
+ do_msg(format);
bb_putchar('\n');
}
if (flags & flag_shm) {
- do_shm();
+ do_shm(format);
bb_putchar('\n');
}
if (flags & flag_sem) {
- do_sem();
+ do_sem(format);
bb_putchar('\n');
}
fflush_stdout_and_exit(EXIT_SUCCESS);