removed unnecessary fp, shorter return 0 and fixed compiler warning in vol_perc

[slstatus.git] / slstatus.c

diff --git a/slstatus.c b/slstatus.c
index 49b14de..e7c1c3f 100644 (file)
--- 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);
@@ -270,16 +269,11 @@ static char *
 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("hostname");
                return smprintf(UNKNOWN_STR);
        }
-       fgets(buf, sizeof(buf), fp);
-       buf[strlen(buf)-1] = '\0';
-       fclose(fp);
 
        return smprintf("%s", buf);
 }
@@ -502,7 +496,10 @@ 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("0%%");
+       else
+               return smprintf("%lu%%", ((uint_fast16_t)(vol * 100) / max));
 }
 
 static char *
@@ -613,7 +610,7 @@ 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();