ceph/src/common/blkdev.h

   1 #ifndef __CEPH_COMMON_BLKDEV_H
   2 #define __CEPH_COMMON_BLKDEV_H
   3
   4 /* for testing purposes */
   5 extern void set_block_device_sandbox_dir(const char *dir);
   6
   7 // from a path (e.g., "/dev/sdb")
   8 extern int get_block_device_base(const char *path, char *devname, size_t len);
   9
  10 // from an fd
  11 extern int block_device_discard(int fd, int64_t offset, int64_t len);
  12 extern int get_block_device_size(int fd, int64_t *psize);
  13 extern int get_device_by_fd(int fd, char* partition, char* device, size_t max);
  14
  15 // from a uuid
  16 extern int get_device_by_uuid(uuid_d dev_uuid, const char* label,
  17                               char* partition, char* device);
  18
  19 // from a device (e.g., "sdb")
  20 extern int64_t get_block_device_int_property(
  21         const char *devname, const char *property);
  22 extern int64_t get_block_device_string_property(
  23         const char *devname, const char *property,
  24         char *val, size_t maxlen);
  25 extern bool block_device_support_discard(const char *devname);
  26 extern bool block_device_is_rotational(const char *devname);
  27 extern int block_device_model(const char *devname, char *model, size_t max);
  28
  29 #endif