components/disk.c

   1 /* See LICENSE file for copyright and license details. */
   2 #include <stdio.h>
   3 #include <sys/statvfs.h>
   4
   5 #include "../util.h"
   6
   7 const char *
   8 disk_free(const char *mnt)
   9 {
  10         struct statvfs fs;
  11
  12         if (statvfs(mnt, &fs) < 0) {
  13                 fprintf(stderr, "Failed to get filesystem info");
  14                 return NULL;
  15         }
  16
  17         return bprintf("%f", (float)fs.f_bsize * (float)fs.f_bfree / 1024 / 1024 / 1024);
  18 }
  19
  20 const char *
  21 disk_perc(const char *mnt)
  22 {
  23         int perc;
  24         struct statvfs fs;
  25
  26         if (statvfs(mnt, &fs) < 0) {
  27                 fprintf(stderr, "Failed to get filesystem info");
  28                 return NULL;
  29         }
  30
  31         perc = 100 * (1.0f - ((float)fs.f_bfree / (float)fs.f_blocks));
  32
  33         return bprintf("%d", perc);
  34 }
  35
  36 const char *
  37 disk_total(const char *mnt)
  38 {
  39         struct statvfs fs;
  40
  41         if (statvfs(mnt, &fs) < 0) {
  42                 fprintf(stderr, "Failed to get filesystem info");
  43                 return NULL;
  44         }
  45
  46         return bprintf("%f", (float)fs.f_bsize * (float)fs.f_blocks / 1024 / 1024 / 1024);
  47 }
  48
  49 const char *
  50 disk_used(const char *mnt)
  51 {
  52         struct statvfs fs;
  53
  54         if (statvfs(mnt, &fs) < 0) {
  55                 fprintf(stderr, "Failed to get filesystem info");
  56                 return NULL;
  57         }
  58
  59         return bprintf("%f", (float)fs.f_bsize * ((float)fs.f_blocks - (float)fs.f_bfree) / 1024 / 1024 / 1024);
  60 }