os/binject.h

   1 #ifndef BINJECT_H
   2 #define BINJECT_H
   3
   4 #include <linux/types.h>
   5
   6 #define BINJECT_MAGIC           0x89
   7 #define BINJECT_VER             0x01
   8 #define BINJECT_MAGIC_SHIFT     8
   9 #define BINJECT_VER_MASK        ((1 << BINJECT_MAGIC_SHIFT) - 1)
  10
  11 struct b_user_cmd {
  12         __u16 magic;    /* INPUT */
  13         __u16 type;     /* INPUT */
  14         __u32 error;    /* OUTPUT */
  15         __u32 flags;    /* INPUT */
  16         __u32 len;      /* INPUT */
  17         __u64 offset;   /* INPUT */
  18         __u64 buf;      /* INPUT */
  19         __u64 usr_ptr;  /* PASSED THROUGH */
  20         __u64 nsec;     /* OUTPUT */
  21 };
  22
  23 struct b_ioctl_cmd {
  24         int fd;
  25         int minor;
  26 };
  27
  28 enum {
  29         B_TYPE_READ             = 0,
  30         B_TYPE_WRITE,
  31         B_TYPE_DISCARD,
  32         B_TYPE_READVOID,
  33         B_TYPE_WRITEZERO,
  34         B_TYPE_READBARRIER,
  35         B_TYPE_WRITEBARRIER,
  36         B_TYPE_NR
  37 };
  38
  39 enum {
  40         __B_FLAG_SYNC   = 0,
  41         __B_FLAG_UNPLUG,
  42         __B_FLAG_NOIDLE,
  43         __B_FLAG_BARRIER,
  44         __B_FLAG_META,
  45         __B_FLAG_RAHEAD,
  46         __B_FLAG_FAILFAST_DEV,
  47         __B_FLAG_FAILFAST_TRANSPORT,
  48         __B_FLAG_FAILFAST_DRIVER,
  49         __B_FLAG_NR,
  50
  51         B_FLAG_SYNC                     = 1 << __B_FLAG_SYNC,
  52         B_FLAG_UNPLUG                   = 1 << __B_FLAG_UNPLUG,
  53         B_FLAG_NOIDLE                   = 1 << __B_FLAG_NOIDLE,
  54         B_FLAG_BARRIER                  = 1 << __B_FLAG_BARRIER,
  55         B_FLAG_META                     = 1 << __B_FLAG_META,
  56         B_FLAG_RAHEAD                   = 1 << __B_FLAG_RAHEAD,
  57         B_FLAG_FAILFAST_DEV             = 1 << __B_FLAG_FAILFAST_DEV,
  58         B_FLAG_FAILFAST_TRANSPORT       = 1 << __B_FLAG_FAILFAST_TRANSPORT,
  59         B_FLAG_FAILFAST_DRIVER          = 1 << __B_FLAG_FAILFAST_DRIVER,
  60 };
  61
  62 static inline void binject_buc_set_magic(struct b_user_cmd *buc)
  63 {
  64         buc->magic = (BINJECT_MAGIC << BINJECT_MAGIC_SHIFT) | BINJECT_VER;
  65 }
  66
  67 #endif