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ipcs: code shrink

Browse Source 
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>
This commit is contained in:
Denys Vlasenko 2018-03-08 13:10:23 +01:00
parent 694bc06345
commit f7fa8001b7
1 changed files with 15 additions and 24 deletions
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39
util-linux/ipcs.c
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@ -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);