src/system/libroot/posix/sys/statvfs.c

   1 /*
   2  * Copyright 2005, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   3  * Distributed under the terms of the MIT License.
   4  */
   5
   6
   7 #include <sys/statvfs.h>
   8 #include <sys/stat.h>
   9
  10 #include <fs_info.h>
  11
  12
  13 static int
  14 fill_statvfs(dev_t device, struct statvfs *statvfs)
  15 {
  16         fs_info info;
  17         if (fs_stat_dev(device, &info) < 0)
  18                 return -1;
  19
  20         statvfs->f_frsize = statvfs->f_bsize = info.block_size;
  21         statvfs->f_blocks = info.total_blocks;
  22         statvfs->f_bavail = statvfs->f_bfree = info.free_blocks;
  23         statvfs->f_files = info.total_nodes;
  24         statvfs->f_favail = statvfs->f_ffree = info.free_nodes;
  25         statvfs->f_fsid = device;
  26         statvfs->f_flag = info.flags & B_FS_IS_READONLY ? ST_RDONLY : 0;
  27         statvfs->f_namemax = B_FILE_NAME_LENGTH;
  28
  29         return 0;
  30 }
  31
  32
  33 //      #pragma mark -
  34
  35
  36 int
  37 statvfs(const char *path, struct statvfs *statvfs)
  38 {
  39         dev_t device = dev_for_path(path);
  40         if (device < 0)
  41                 return -1;
  42
  43         return fill_statvfs(device, statvfs);
  44 }
  45
  46
  47 int
  48 fstatvfs(int fd, struct statvfs *statvfs)
  49 {
  50         struct stat stat;
  51         if (fstat(fd, &stat) < 0)
  52                 return -1;
  53
  54         return fill_statvfs(stat.st_dev, statvfs);
  55 }
  56