[hackers] [slstatus] Return actual percentage for wifi_perc() || parazyd

[git]

commit d2988c72e3e77e188fda0176ce4969322e69fae9
Author:     parazyd <para...@dyne.org>
AuthorDate: Tue Oct 24 11:03:17 2017 +0200
Commit:     Aaron Marcher <m...@drkhsh.at>
CommitDate: Tue Oct 24 11:16:54 2017 +0200

    Return actual percentage for wifi_perc()
    
    Implement basic percentage calculation for wifi_perc. With this
    commit, the function returns correct percentage, since the max
    of what /proc/net/wireless returns is 70.

diff --git a/components/wifi.c b/components/wifi.c
index 30b57ab..9ecb8e1 100644
--- a/components/wifi.c
+++ b/components/wifi.c
@@ -14,7 +14,9 @@
 const char *
 wifi_perc(const char *iface)
 {
-       int i, perc;
+       int i, cur;
+       float perc;
+       int total = 70; /* the max of /proc/net/wireless */
        char *p, *datastart;
        char path[PATH_MAX];
        char status[5];
@@ -50,9 +52,11 @@ wifi_perc(const char *iface)
                return NULL;
 
        datastart = (datastart+(strlen(iface)+1));
-       sscanf(datastart + 1, " %*d   %d  %*d  %*d                %*d      %*d  
        %*d              %*d      %*d            %*d", &perc);
+       sscanf(datastart + 1, " %*d   %d  %*d  %*d                %*d      %*d  
        %*d              %*d      %*d            %*d", &cur);
 
-       return bprintf("%d", perc);
+       perc = (float)cur / total * 100.0;
+
+       return bprintf("%.0f", perc);
 }
 
 const char *