src/system/libroot/os/fs_info.c

   1 /*
   2 ** Copyright 2004, Axel Dörfler, axeld@pinc-software.de. All rights reserved.
   3 ** Distributed under the terms of the Haiku License.
   4 */
   5
   6
   7 #include <fs_info.h>
   8
   9 #include <stdlib.h>
  10 #include <fcntl.h>
  11 #include <errno.h>
  12
  13 #include <errno_private.h>
  14 #include <syscalls.h>
  15
  16
  17 #define RETURN_AND_SET_ERRNO(status) \
  18         { \
  19                 if (status < 0) { \
  20                         __set_errno(status); \
  21                         return -1; \
  22                 } \
  23                 return status; \
  24         }
  25
  26
  27 dev_t
  28 dev_for_path(const char *path)
  29 {
  30         struct stat stat;
  31         int status = _kern_read_stat(-1, path, true, &stat, sizeof(struct stat));
  32         if (status == B_OK)
  33                 return stat.st_dev;
  34
  35         RETURN_AND_SET_ERRNO(status);
  36 }
  37
  38
  39 dev_t
  40 next_dev(int32 *_cookie)
  41 {
  42         return _kern_next_device(_cookie);
  43                 // For some reason, this one returns its error code directly
  44 }
  45
  46
  47 int
  48 fs_stat_dev(dev_t device, fs_info *info)
  49 {
  50         status_t status = _kern_read_fs_info(device, info);
  51
  52         RETURN_AND_SET_ERRNO(status);
  53 }
  54
  55