components/disk.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <errno.h>
   3 #include <stdio.h>
   4 #include <string.h>
   5 #include <sys/statvfs.h>
   6
   7 #include "../util.h"
   8
   9 const char *
  10 disk_free(const char *mnt)
  11 {
  12         struct statvfs fs;
  13
  14         if (statvfs(mnt, &fs) < 0) {
  15                 warn("statvfs '%s':", mnt);
  16                 return NULL;
  17         }
  18
  19         return fmt_scaled(fs.f_frsize * fs.f_bavail);
  20 }
  21
  22 const char *
  23 disk_perc(const char *mnt)
  24 {
  25         struct statvfs fs;
  26
  27         if (statvfs(mnt, &fs) < 0) {
  28                 warn("statvfs '%s':", mnt);
  29                 return NULL;
  30         }
  31
  32         return bprintf("%d", (int)(100 *
  33                        (1.0f - ((float)fs.f_bavail / (float)fs.f_blocks))));
  34 }
  35
  36 const char *
  37 disk_total(const char *mnt)
  38 {
  39         struct statvfs fs;
  40
  41         if (statvfs(mnt, &fs) < 0) {
  42                 warn("statvfs '%s':", mnt);
  43                 return NULL;
  44         }
  45
  46         return fmt_scaled(fs.f_frsize * fs.f_blocks);
  47 }
  48
  49 const char *
  50 disk_used(const char *mnt)
  51 {
  52         struct statvfs fs;
  53
  54         if (statvfs(mnt, &fs) < 0) {
  55                 warn("statvfs '%s':", mnt);
  56                 return NULL;
  57         }
  58
  59         return fmt_scaled(fs.f_frsize * (fs.f_blocks - fs.f_bfree));
  60 }