Open file + make buffer

1 files changed, 19 insertions, 0 deletions

diff --git a/src/lib.c b/src/lib.c
index ef92935..0a98435 100644
--- a/src/lib.c
+++ b/src/lib.c
@@ -1,7 +1,26 @@
 #include <stdio.h>
 #include <stdlib.h>
+#include <sys/ioctl.h>
 
 void die(const char *message) {
   perror(message);
   exit(1);
 }
+
+char *formatBytes(double *bytes) {
+  char *SIZES[] = {"bytes", "kB", "MB", "GB"};
+
+  size_t size = *bytes;
+  size_t div = 0;
+  size_t rem = 0;
+
+  while (size >= 1024 && div < (sizeof SIZES / sizeof *SIZES)) {
+    rem = (size % 1024);
+    div++;
+    size /= 1024;
+  }
+
+  *bytes = (float)size + (float)rem / 1024.0;
+
+  return SIZES[div];
+}