include/ioctls.h

   1 #pragma once
   2
   3 #include <stdlib.h>
   4 #include <sys/stat.h>
   5
   6 struct ioctl {
   7         const char *name;
   8         unsigned int request;
   9 };
  10
  11 #define DEV_CHAR  1
  12 #define DEV_BLOCK 2
  13 #define DEV_MISC  3
  14
  15 struct ioctl_group {
  16         /* optional user visible string that describes this group of ioctl
  17          * operations. */
  18         const char *name;
  19
  20         /* Non-NULL sanitise routine for this ioctl group. Initialize to
  21          * "pick_random_ioctl" to pick one random ioctl. */
  22         void (*sanitise)(const struct ioctl_group *, int childno);
  23
  24         /* Plug the available ioctls here. */
  25         const struct ioctl *ioctls;
  26         size_t ioctls_cnt;
  27
  28         /* One of the DEV_* constants. */
  29         int devtype;
  30
  31         /* List the device names from /proc/devices or /proc/misc that these
  32          * ioctl operations are valid for. */
  33         const char *const *devs;
  34         size_t devs_cnt;
  35
  36         /* Optional routine that should return 0 if the file descriptor is
  37          * valid for this group. */
  38         int (*fd_test)(int fd, const struct stat *);
  39 };
  40
  41 void register_ioctl_group(const struct ioctl_group *);
  42
  43 const struct ioctl_group *find_ioctl_group(int fd);
  44
  45 const struct ioctl_group *get_random_ioctl_group(void);
  46
  47 void pick_random_ioctl(const struct ioctl_group *, int childno);
  48
  49 void dump_ioctls(void);
  50
  51 #define IOCTL(_request) \
  52         { .request = _request, .name = #_request, }
  53
  54 #define REG_IOCTL_GROUP(_struct) \
  55         static void __attribute__((constructor)) register_##_struct(void) { \
  56                 register_ioctl_group(&_struct); \
  57         }
  58