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 #define BINJECT_IOCTL_CHR       'J'
  29 #define B_IOCTL_ADD             _IOWR(BINJECT_IOCTL_CHR, 1, struct b_ioctl_cmd)
  30 #define B_IOCTL_DEL             _IOWR(BINJECT_IOCTL_CHR, 2, struct b_ioctl_cmd)
  31
  32 enum {
  33         B_TYPE_READ             = 0,
  34         B_TYPE_WRITE,
  35         B_TYPE_DISCARD,
  36         B_TYPE_READVOID,
  37         B_TYPE_WRITEZERO,
  38         B_TYPE_READBARRIER,
  39         B_TYPE_WRITEBARRIER,
  40         B_TYPE_NR
  41 };
  42
  43 enum {
  44         __B_FLAG_SYNC   = 0,
  45         __B_FLAG_UNPLUG,
  46         __B_FLAG_NOIDLE,
  47         __B_FLAG_BARRIER,
  48         __B_FLAG_META,
  49         __B_FLAG_RAHEAD,
  50         __B_FLAG_FAILFAST_DEV,
  51         __B_FLAG_FAILFAST_TRANSPORT,
  52         __B_FLAG_FAILFAST_DRIVER,
  53         __B_FLAG_NR,
  54
  55         B_FLAG_SYNC                     = 1 << __B_FLAG_SYNC,
  56         B_FLAG_UNPLUG                   = 1 << __B_FLAG_UNPLUG,
  57         B_FLAG_NOIDLE                   = 1 << __B_FLAG_NOIDLE,
  58         B_FLAG_BARRIER                  = 1 << __B_FLAG_BARRIER,
  59         B_FLAG_META                     = 1 << __B_FLAG_META,
  60         B_FLAG_RAHEAD                   = 1 << __B_FLAG_RAHEAD,
  61         B_FLAG_FAILFAST_DEV             = 1 << __B_FLAG_FAILFAST_DEV,
  62         B_FLAG_FAILFAST_TRANSPORT       = 1 << __B_FLAG_FAILFAST_TRANSPORT,
  63         B_FLAG_FAILFAST_DRIVER          = 1 << __B_FLAG_FAILFAST_DRIVER,
  64 };
  65
  66 static inline void binject_buc_set_magic(struct b_user_cmd *buc)
  67 {
  68         buc->magic = (BINJECT_MAGIC << BINJECT_MAGIC_SHIFT) | BINJECT_VER;
  69 }
  70
  71 #endif