X-Git-Url: https://git.xinqibao.xyz/slstatus.git/blobdiff_plain/0fe8e5a961a32e56412a06b4a31a6ba543fd2dfb..5e7aa2a321c0a60c03021b0f25bec1c15a713dab:/slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 49b14de..6417305 100644
--- a/slstatus.c
+++ b/slstatus.c
@@ -89,8 +89,7 @@ smprintf(const char *fmt, ...)
 
 	ret = malloc(++len);
 	if (ret == NULL) {
-		warn("Malloc failed.");
-		return "n/a";
+		err(1, "malloc");
 	}
 
 	va_start(ap, fmt);
@@ -272,14 +271,10 @@ hostname(void)
 	char buf[HOST_NAME_MAX];
 	FILE *fp;
 
-	fp = fopen("/proc/sys/kernel/hostname", "r");
-	if (fp == NULL) {
-		warn("Failed to open file /proc/sys/kernel/hostname");
+	if (gethostname(buf, sizeof(buf)) == -1) {
+		warn(1, "hostname");
 		return smprintf(UNKNOWN_STR);
 	}
-	fgets(buf, sizeof(buf), fp);
-	buf[strlen(buf)-1] = '\0';
-	fclose(fp);
 
 	return smprintf("%s", buf);
 }
@@ -502,7 +497,10 @@ vol_perc(const char *card)
 	snd_mixer_selem_id_free(s_elem);
 	snd_mixer_close(handle);
 
-	return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
+	if (max == 0)
+		return smprintf("%d%%", 0);
+	else
+		return smprintf("%d%%", ((uint_fast16_t)(vol * 100) / max));
 }
 
 static char *
@@ -613,7 +611,7 @@ main(int argc, char *argv[])
 			oflag = 1;
 			break;
 		case 'v':
-			printf("%s version %s (c) 2016 slstatus engineers\n", argv0, VERSION);
+			printf("slstatus %s (C) 2016 slstatus engineers\n", VERSION);
 			return 0;
 		default:
 			usage();