Add Michael Buch to LICENSE

[slstatus.git] / components / swap.c

diff --git a/components/swap.c b/components/swap.c
index c005691..37ee85c 100644 (file)
--- a/components/swap.c
+++ b/components/swap.c
@@ -48,7 +48,7 @@
                }
                sscanf(match, "SwapFree: %ld kB\n", &free);
 
-               return fmt_human_2(free * 1024, "B");
+               return fmt_human(free * 1024, 1024);
        }
 
        const char *
@@ -76,7 +76,11 @@
                }
                sscanf(match, "SwapFree: %ld kB\n", &free);
 
-               return bprintf("%d%%", 100 * (total - free - cached) / total);
+               if (total == 0) {
+                       return NULL;
+               }
+
+               return bprintf("%d", 100 * (total - free - cached) / total);
        }
 
        const char *
@@ -94,7 +98,7 @@
                }
                sscanf(match, "SwapTotal: %ld kB\n", &total);
 
-               return fmt_human_2(total * 1024, "B");
+               return fmt_human(total * 1024, 1024);
        }
 
        const char *
@@ -122,7 +126,7 @@
                }
                sscanf(match, "SwapFree: %ld kB\n", &free);
 
-               return fmt_human_2((total - free - cached) * 1024, "B");
+               return fmt_human((total - free - cached) * 1024, 1024);
        }
 #elif defined(__OpenBSD__)
        #include <stdlib.h>
@@ -131,29 +135,27 @@
        #include <sys/types.h>
        #include <unistd.h>
 
-       static void
+       static int
        getstats(int *total, int *used)
        {
                struct swapent *sep, *fsep;
                int rnswap, nswap, i;
 
-               nswap = swapctl(SWAP_NSWAP, 0, 0);
-               if (nswap < 1) {
+               if ((nswap = swapctl(SWAP_NSWAP, 0, 0)) < 1) {
                        warn("swaptctl 'SWAP_NSWAP':");
+                       return 1;
                }
-
-               fsep = sep = calloc(nswap, sizeof(*sep));
-               if (!sep) {
+               if (!(fsep = sep = calloc(nswap, sizeof(*sep)))) {
                        warn("calloc 'nswap':");
+                       return 1;
                }
-
-               rnswap = swapctl(SWAP_STATS, (void *)sep, nswap);
-               if (rnswap < 0) {
+               if ((rnswap = swapctl(SWAP_STATS, (void *)sep, nswap)) < 0) {
                        warn("swapctl 'SWAP_STATA':");
+                       return 1;
                }
-
                if (nswap != rnswap) {
                        warn("getstats: SWAP_STATS != SWAP_NSWAP");
+                       return 1;
                }
 
                *total = 0;
@@ -165,6 +167,8 @@
                }
 
                free(fsep);
+
+               return 0;
        }
 
        const char *
@@ -172,9 +176,11 @@
        {
                int total, used;
 
-               getstats(&total, &used);
+               if (getstats(&total, &used)) {
+                       return NULL;
+               }
 
-               return fmt_human_2((total - used) * 1024, "B");
+               return fmt_human((total - used) * 1024, 1024);
        }
 
        const char *
@@ -182,9 +188,15 @@
        {
                int total, used;
 
-               getstats(&total, &used);
+               if (getstats(&total, &used)) {
+                       return NULL;
+               }
+
+               if (total == 0) {
+                       return NULL;
+               }
 
-               return bprintf("%d%%", 100 * used / total);
+               return bprintf("%d", 100 * used / total);
        }
 
        const char *
@@ -192,9 +204,11 @@
        {
                int total, used;
 
-               getstats(&total, &used);
+               if (getstats(&total, &used)) {
+                       return NULL;
+               }
 
-               return fmt_human_2(total * 1024, "B");
+               return fmt_human(total * 1024, 1024);
        }
 
        const char *
@@ -202,8 +216,10 @@
        {
                int total, used;
 
-               getstats(&total, &used);
+               if (getstats(&total, &used)) {
+                       return NULL;
+               }
 
-               return fmt_human_2(used * 1024, "B");
+               return fmt_human(used * 1024, 1024);
        }
 #endif