linux.git/fs/ecryptfs/crypto.c, branch v4.5 Linux kernel source tree eCryptfs: Delete a check before the function call "key_put" 2015-08-18T22:29:49+00:00 Markus Elfring elfring@users.sourceforge.net 2015-06-26T16:18:54+00:00 0dad87fcb732691bfd3183acccda6709e1e759ca The key_put() function tests whether its argument is NULL and then returns immediately. Thus the test around this call might not be needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Tyler Hicks <tyhicks@canonical.com> 
The key_put() function tests whether its argument is NULL and then
returns immediately. Thus the test around this call might not be needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
VFS: normal filesystems (and lustre): d_inode() annotations 2015-04-15T19:06:57+00:00 David Howells dhowells@redhat.com 2015-03-17T22:25:59+00:00 2b0143b5c986be1ce8408b3aadc4709e0a94429d that's the bulk of filesystem drivers dealing with inodes of their own Signed-off-by: David Howells <dhowells@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
that's the bulk of filesystem drivers dealing with inodes of their own

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Merge tag 'ecryptfs-3.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs 2014-12-20T02:15:12+00:00 Linus Torvalds torvalds@linux-foundation.org 2014-12-20T02:15:12+00:00 298647e31af52e795867a399fa049cebd88067ff Pull eCryptfs fixes from Tyler Hicks: "Fixes for filename decryption and encrypted view plus a cleanup - The filename decryption routines were, at times, writing a zero byte one character past the end of the filename buffer - The encrypted view feature attempted, and failed, to roll its own form of enforcing a read-only mount instead of letting the VFS enforce it" * tag 'ecryptfs-3.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs: eCryptfs: Remove buggy and unnecessary write in file name decode routine eCryptfs: Remove unnecessary casts when parsing packet lengths eCryptfs: Force RO mount when encrypted view is enabled 
Pull eCryptfs fixes from Tyler Hicks:
 "Fixes for filename decryption and encrypted view plus a cleanup

   - The filename decryption routines were, at times, writing a zero
     byte one character past the end of the filename buffer

   - The encrypted view feature attempted, and failed, to roll its own
     form of enforcing a read-only mount instead of letting the VFS
     enforce it"

* tag 'ecryptfs-3.19-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  eCryptfs: Remove buggy and unnecessary write in file name decode routine
  eCryptfs: Remove unnecessary casts when parsing packet lengths
  eCryptfs: Force RO mount when encrypted view is enabled
eCryptfs: Remove buggy and unnecessary write in file name decode routine 2014-11-26T21:55:02+00:00 Michael Halcrow mhalcrow@google.com 2014-11-26T17:09:16+00:00 942080643bce061c3dd9d5718d3b745dcb39a8bc Dmitry Chernenkov used KASAN to discover that eCryptfs writes past the end of the allocated buffer during encrypted filename decoding. This fix corrects the issue by getting rid of the unnecessary 0 write when the current bit offset is 2. Signed-off-by: Michael Halcrow <mhalcrow@google.com> Reported-by: Dmitry Chernenkov <dmitryc@google.com> Suggested-by: Kees Cook <keescook@chromium.org> Cc: stable@vger.kernel.org # v2.6.29+: 51ca58d eCryptfs: Filename Encryption: Encoding and encryption functions Signed-off-by: Tyler Hicks <tyhicks@canonical.com> 
Dmitry Chernenkov used KASAN to discover that eCryptfs writes past the
end of the allocated buffer during encrypted filename decoding. This
fix corrects the issue by getting rid of the unnecessary 0 write when
the current bit offset is 2.

Signed-off-by: Michael Halcrow <mhalcrow@google.com>
Reported-by: Dmitry Chernenkov <dmitryc@google.com>
Suggested-by: Kees Cook <keescook@chromium.org>
Cc: stable@vger.kernel.org # v2.6.29+: 51ca58d eCryptfs: Filename Encryption: Encoding and encryption functions
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
kill f_dentry uses 2014-11-19T18:01:25+00:00 Al Viro viro@zeniv.linux.org.uk 2014-10-31T05:22:04+00:00 b583043e99bc6d91e98fae32bd9eff6a5958240a Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> 
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
tree-wide: use reinit_completion instead of INIT_COMPLETION 2013-11-15T00:32:21+00:00 Wolfram Sang wsa@the-dreams.de 2013-11-14T22:32:02+00:00 16735d022f72b20ddbb2274b8e109f69575e9b2b Use this new function to make code more comprehensible, since we are reinitialzing the completion, not initializing. [akpm@linux-foundation.org: linux-next resyncs] Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13) Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Use this new function to make code more comprehensible, since we are
reinitialzing the completion, not initializing.

[akpm@linux-foundation.org: linux-next resyncs]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org> (personally at LCE13)
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
eCryptfs: fix 32 bit corruption issue 2013-10-24T19:36:30+00:00 Colin Ian King colin.king@canonical.com 2013-10-24T14:08:07+00:00 43b7c6c6a4e3916edd186ceb61be0c67d1e0969e Shifting page->index on 32 bit systems was overflowing, causing data corruption of > 4GB files. Fix this by casting it first. https://launchpad.net/bugs/1243636 Signed-off-by: Colin Ian King <colin.king@canonical.com> Reported-by: Lars Duesing <lars.duesing@camelotsweb.de> Cc: stable@vger.kernel.org # v3.11+ Signed-off-by: Tyler Hicks <tyhicks@canonical.com> 
Shifting page->index on 32 bit systems was overflowing, causing
data corruption of > 4GB files. Fix this by casting it first.

https://launchpad.net/bugs/1243636

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reported-by: Lars Duesing <lars.duesing@camelotsweb.de>
Cc: stable@vger.kernel.org # v3.11+
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
ecryptfs: avoid ctx initialization race 2013-09-06T23:58:18+00:00 Kees Cook keescook@chromium.org 2013-08-13T22:02:27+00:00 cb69f36ba1f8d5e73c46538e84a88178fb17f23d It might be possible for two callers to race the mutex lock after the NULL ctx check. Instead, move the lock above the check so there isn't the possibility of leaking a crypto ctx. Additionally, report the full algo name when failing. Signed-off-by: Kees Cook <keescook@chromium.org> [tyhicks: remove out label, which is no longer used] Signed-off-by: Tyler Hicks <tyhicks@canonical.com> 
It might be possible for two callers to race the mutex lock after the
NULL ctx check. Instead, move the lock above the check so there isn't
the possibility of leaking a crypto ctx. Additionally, report the full
algo name when failing.

Signed-off-by: Kees Cook <keescook@chromium.org>
[tyhicks: remove out label, which is no longer used]
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
ecryptfs: remove check for if an array is NULL 2013-09-06T23:51:56+00:00 Dan Carpenter dan.carpenter@oracle.com 2013-07-31T09:10:10+00:00 e6cbd6a44d8e263073808da9f295e502d15dc3fe It doesn't make sense to check if an array is NULL. The compiler just removes the check. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Tyler Hicks <tyhicks@canonical.com> 
It doesn't make sense to check if an array is NULL.  The compiler just
removes the check.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Merge tag 'ecryptfs-3.11-rc1-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs 2013-07-11T17:20:18+00:00 Linus Torvalds torvalds@linux-foundation.org 2013-07-11T17:20:18+00:00 746919d2668037f297595da9281a22cd558f3d18 Pull eCryptfs updates from Tyler Hicks: "Code cleanups and improved buffer handling during page crypto operations: - Remove redundant code by merging some encrypt and decrypt functions - Get rid of a helper page allocation during page decryption by using in-place decryption - Better use of entire pages during page crypto operations - Several code cleanups" * tag 'ecryptfs-3.11-rc1-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs: Use ecryptfs_dentry_to_lower_path in a couple of places eCryptfs: Make extent and scatterlist crypt function parameters similar eCryptfs: Collapse crypt_page_offset() into crypt_extent() eCryptfs: Merge ecryptfs_encrypt_extent() and ecryptfs_decrypt_extent() eCryptfs: Combine page_offset crypto functions eCryptfs: Combine encrypt_scatterlist() and decrypt_scatterlist() eCryptfs: Decrypt pages in-place eCryptfs: Accept one offset parameter in page offset crypto functions eCryptfs: Simplify lower file offset calculation eCryptfs: Read/write entire page during page IO eCryptfs: Use entire helper page during page crypto operations eCryptfs: Cocci spatch "memdup.spatch" 
Pull eCryptfs updates from Tyler Hicks:
 "Code cleanups and improved buffer handling during page crypto
  operations:
   - Remove redundant code by merging some encrypt and decrypt functions
   - Get rid of a helper page allocation during page decryption by using
     in-place decryption
   - Better use of entire pages during page crypto operations
   - Several code cleanups"

* tag 'ecryptfs-3.11-rc1-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/tyhicks/ecryptfs:
  Use ecryptfs_dentry_to_lower_path in a couple of places
  eCryptfs: Make extent and scatterlist crypt function parameters similar
  eCryptfs: Collapse crypt_page_offset() into crypt_extent()
  eCryptfs: Merge ecryptfs_encrypt_extent() and ecryptfs_decrypt_extent()
  eCryptfs: Combine page_offset crypto functions
  eCryptfs: Combine encrypt_scatterlist() and decrypt_scatterlist()
  eCryptfs: Decrypt pages in-place
  eCryptfs: Accept one offset parameter in page offset crypto functions
  eCryptfs: Simplify lower file offset calculation
  eCryptfs: Read/write entire page during page IO
  eCryptfs: Use entire helper page during page crypto operations
  eCryptfs: Cocci spatch "memdup.spatch"