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signal handling to exit gracefully + small coding style fixes

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Aaron Marcher 2016-09-13 19:09:01 +02:00 committed by Aaron Marcher (drkhsh)
parent a1c962f8a3
commit 67d3f9c540
1 changed files with 21 additions and 4 deletions
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23
slstatus.c
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@ -8,6 +8,7 @@
#include <linux/wireless.h>
#include <netdb.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
@ -62,9 +63,11 @@ static char *username(void);
static char *vol_perc(const char *);
static char *wifi_perc(const char *);
static char *wifi_essid(const char *);
static void sighandler(const int);
static unsigned short int delay;
static Display *dpy;
static int done = 0;
#include "config.h"
@ -516,7 +519,7 @@ wifi_perc(const char *wificard)
fp = fopen(concat, "r");
if(fp == NULL) {
if (fp == NULL) {
warn("Error opening wifi operstate file");
return smprintf(UNKNOWN_STR);
}
@ -558,7 +561,7 @@ wifi_essid(const char *wificard)
memset(&wreq, 0, sizeof(struct iwreq));
wreq.u.essid.length = IW_ESSID_MAX_SIZE+1;
sprintf(wreq.ifr_name, wificard);
if(sockfd == -1) {
if (sockfd == -1) {
warn("Cannot open socket for interface: %s", wificard);
return smprintf(UNKNOWN_STR);
}
@ -576,6 +579,14 @@ wifi_essid(const char *wificard)
return smprintf("%s", (char *)wreq.u.essid.pointer);
}
static void
sighandler(int signo)
{
if (signo == SIGTERM || signo == SIGINT) {
done = 1;
}
}
int
main(void)
{
@ -583,10 +594,16 @@ main(void)
char status_string[4096];
char *res, *element;
struct arg argument;
struct sigaction act;
memset(&act, 0, sizeof(act));
act.sa_handler = sighandler;
sigaction(SIGINT, &act, 0);
sigaction(SIGTERM, &act, 0);
dpy = XOpenDisplay(NULL);
for (;;) {
while (!done) {
status_string[0] = '\0';
for (i = 0; i < sizeof(args) / sizeof(args[0]); ++i) {
argument = args[i];