linux-stable.git/fs/adfs, branch v5.2

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500

2019-06-19T15:09:55+00:00

Based on 2 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license version 2 as
  published by the free software foundation #

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-only

has been chosen to replace the boilerplate/reference in 4122 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Enrico Weigelt 
Reviewed-by: Kate Stewart 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190604081206.933168790@linutronix.de
Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-rc-adfs' of git://git.armlinux.org.uk/~rmk/linux-arm

2019-06-06T18:02:54+00:00

Pull ADFS cleanups/fixes from Russell King:
 "As a result of some of Al Viro's great work, here are a few cleanups
  with fixes for adfs:

   - factor out filename comparison, so we can be sure that
     adfs_compare() (used for namei compare) and adfs_match() (used for
     lookup) have the same behaviour.

   - factor out filename lowering (which is not the same as tolower()
     which will lower top-bit-set characters) to ensure that we have the
     same behaviour when comparing filenames as when we hash them.

   - factor out the object fixups, so we are applying all fixups to
     directory objects in the same way, independent of the disk format.

   - factor out the object name fixup (into the previously factored out
     function) to ensure that filenames are appropriately translated -
     for example, adfs allows '/' in filenames, which being the Unix
     path separator, need to be translated to a different character,
     which is normally '.' (DOS 8.3 filenames represent the . as a / on
     adfs, so this is the expected reverse translation.)

   - remove filename truncation; Al asked about this and apparently the
     decision is to remove it. In any case, adfs's truncation was buggy,
     so this rids us of that bug by removing the truncation feature.

   - we now have only one location which adds the "filetype" suffix to
     the filename, so there's no point that code being out of line.

   - since we translate '/' into '.', an adfs filename of "/" or "//"
     would end up being translated to "." and ".." which have special
     meanings. In this case, change the first character to "^" to avoid
     these special directory names being abused"

* tag 'for-rc-adfs' of git://git.armlinux.org.uk/~rmk/linux-arm:
  fs/adfs: fix filename fixup handling for "/" and "//" names
  fs/adfs: move append_filetype_suffix() into adfs_object_fixup()
  fs/adfs: remove truncated filename hashing
  fs/adfs: factor out filename fixup
  fs/adfs: factor out object fixups
  fs/adfs: factor out filename case lowering
  fs/adfs: factor out filename comparison

fs/adfs: fix filename fixup handling for "/" and "//" names

2019-05-31T09:31:07+00:00

Avoid translating "/" and "//" directory entry names to the special
"." and ".." names by instead converting the first character to "^".

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: move append_filetype_suffix() into adfs_object_fixup()

2019-05-31T09:31:05+00:00

append_filetype_suffix() is now only used in adfs_object_fixup(), so
move it there.

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: remove truncated filename hashing

2019-05-31T09:31:00+00:00

fs/adfs support for truncated filenames is broken, and there is a desire
not to support this into the future.  Let's remove the fs/adfs support
for this.

Viro says:

"FWIW, the word from Linus had been basically "kill it off" on
truncation."

That being:

"Make it so. Make the rule be that d_hash() can only change the hash
itself, rather than the subtle special case for len that we had
because of legacy reasons.."

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: factor out filename fixup

2019-05-31T09:30:57+00:00

Move the filename fixup to adfs_object_fixup() so we only have one
implementation of this.

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: factor out object fixups

2019-05-31T09:30:54+00:00

Factor out the directory object fixups, which parse the filetype and
optionally apply the filetype suffix to the filename.

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: factor out filename case lowering

2019-05-31T09:30:49+00:00

Factor out the filename case lowering of directory names when comparing
or hashing filenames.

Acked-by: Al Viro 
Signed-off-by: Russell King

fs/adfs: factor out filename comparison

2019-05-31T09:30:36+00:00

We have essentially the same code in adfs_compare() as adfs_match(), so
arrange to use a common implementation.

Acked-by: Al Viro 
Signed-off-by: Russell King

treewide: Add SPDX license identifier - Makefile/Kconfig

2019-05-21T08:50:46+00:00

Add SPDX license identifiers to all Make/Kconfig files which:

 - Have no license information of any form

These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:

  GPL-2.0-only

Signed-off-by: Thomas Gleixner 
Signed-off-by: Greg Kroah-Hartman