root/include/uapi/linux/fsverity.h

INCLUDED FROM

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * fs-verity user API
   4  *
   5  * These ioctls can be used on filesystems that support fs-verity.  See the
   6  * "User API" section of Documentation/filesystems/fsverity.rst.
   7  *
   8  * Copyright 2019 Google LLC
   9  */
  10 #ifndef _UAPI_LINUX_FSVERITY_H
  11 #define _UAPI_LINUX_FSVERITY_H
  12 
  13 #include <linux/ioctl.h>
  14 #include <linux/types.h>
  15 
  16 #define FS_VERITY_HASH_ALG_SHA256       1
  17 #define FS_VERITY_HASH_ALG_SHA512       2
  18 
  19 struct fsverity_enable_arg {
  20         __u32 version;
  21         __u32 hash_algorithm;
  22         __u32 block_size;
  23         __u32 salt_size;
  24         __u64 salt_ptr;
  25         __u32 sig_size;
  26         __u32 __reserved1;
  27         __u64 sig_ptr;
  28         __u64 __reserved2[11];
  29 };
  30 
  31 struct fsverity_digest {
  32         __u16 digest_algorithm;
  33         __u16 digest_size; /* input/output */
  34         __u8 digest[];
  35 };
  36 
  37 #define FS_IOC_ENABLE_VERITY    _IOW('f', 133, struct fsverity_enable_arg)
  38 #define FS_IOC_MEASURE_VERITY   _IOWR('f', 134, struct fsverity_digest)
  39 
  40 #endif /* _UAPI_LINUX_FSVERITY_H */