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unix: add support for Linux filesystem encryption

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This CL adds in the necessary types and constants to support Linux
filesystem encryption. This includes the structs for the keys and
polices as well as the constants for key size and encryption algorithms.

This code also reduces the scope of some of the regexes in mkerrors.sh.
This is to reduce the number of unrelated constants added in with this
change.

Note that due to a bug in the Linux uapi headers, not all of the
necessary constants and structures are declared in linux/fs.h despite
being part of the kernel ABI. This means that some constants and types
had to be manually added in.

The bug has been patched (https://patchwork.kernel.org/patch/9662723),
and the manual additions can be removed when the patch is merged into
the mainline kernel.

Change-Id: Ib508ad99bdf4c0068933ffcf351c52bb359cfcf4
Reviewed-on: https://go-review.googlesource.com/41417
Reviewed-by: Matt Layher <mdlayher@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Matt Layher <mdlayher@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
joerichey@google.com
2017-04-24 22:03:05 +00:00
committed by Ian Lance Taylor
parent ea9bcade75
commit 8c0a5eacba
24 changed files with 430 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
unix/zerrors_linux_mipsle.go
+23
View File
@@ -168,6 +168,7 @@ const (
BLKFRASET = 0x20001264
BLKGETSIZE = 0x20001260
BLKGETSIZE64 = 0x40041272
BLKPBSZGET = 0x2000127b
BLKRAGET = 0x20001263
BLKRASET = 0x20001262
BLKROGET = 0x2000125e
@@ -449,6 +450,24 @@ const (
FF1 = 0x8000
FFDLY = 0x8000
FLUSHO = 0x2000
FS_ENCRYPTION_MODE_AES_256_CBC = 0x3
FS_ENCRYPTION_MODE_AES_256_CTS = 0x4
FS_ENCRYPTION_MODE_AES_256_GCM = 0x2
FS_ENCRYPTION_MODE_AES_256_XTS = 0x1
FS_ENCRYPTION_MODE_INVALID = 0x0
FS_IOC_GET_ENCRYPTION_POLICY = 0x800c6615
FS_IOC_GET_ENCRYPTION_PWSALT = 0x80106614
FS_IOC_SET_ENCRYPTION_POLICY = 0x400c6613
FS_KEY_DESCRIPTOR_SIZE = 0x8
FS_KEY_DESC_PREFIX = "fscrypt:"
FS_KEY_DESC_PREFIX_SIZE = 0x8
FS_MAX_KEY_SIZE = 0x40
FS_POLICY_FLAGS_PAD_16 = 0x2
FS_POLICY_FLAGS_PAD_32 = 0x3
FS_POLICY_FLAGS_PAD_4 = 0x0
FS_POLICY_FLAGS_PAD_8 = 0x1
FS_POLICY_FLAGS_PAD_MASK = 0x3
FS_POLICY_FLAGS_VALID = 0x3
F_DUPFD = 0x0
F_DUPFD_CLOEXEC = 0x406
F_EXLCK = 0x4
@@ -810,6 +829,7 @@ const (
MS_ACTIVE = 0x40000000
MS_ASYNC = 0x1
MS_BIND = 0x1000
MS_BORN = 0x20000000
MS_DIRSYNC = 0x80
MS_INVALIDATE = 0x2
MS_I_VERSION = 0x800000
@@ -823,6 +843,8 @@ const (
MS_NODEV = 0x4
MS_NODIRATIME = 0x800
MS_NOEXEC = 0x8
MS_NOREMOTELOCK = 0x8000000
MS_NOSEC = 0x10000000
MS_NOSUID = 0x2
MS_NOUSER = -0x80000000
MS_POSIXACL = 0x10000
@@ -839,6 +861,7 @@ const (
MS_SYNC = 0x4
MS_SYNCHRONOUS = 0x10
MS_UNBINDABLE = 0x20000
MS_VERBOSE = 0x8000
NAME_MAX = 0xff
NETLINK_ADD_MEMBERSHIP = 0x1
NETLINK_AUDIT = 0x9