From: Colin Ian King <colin.king@canonical.com>

BugLink: https://launchpad.net/bugs/911507

SRU justification:

Impact:

eCryptfs only initialized lower files in the ecryptfs_create() path.
A number of users have reported empty lower files in beneath their
eCryptfs mounts. The presence of empty files causes problems due to
the lack of proper cryptographic metadata.

Fix:

Backport upstream commit e3ccaa9761200952cc269b1f4b7d7bb77a5e071b

Testcase:

http://bazaar.launchpad.net/~colin-king/ecryptfs/test-fixes/revision/723

sudo ./tests/run_tests.sh -K -c safe -b 1000000 -D /tmp/image -l /lower -u /upper
-f ext2,ext3,ext4,xfs,btrfs -t lp-911507.sh

Without the fix, this test fails. With the fix, it passes.

Note: Tested this against all other eCryptfs tests to ensure we don't regress
plus did 1+ hour soak test of multiple parallel builds.

Colin Ian King (1):
eCryptfs: Initialize empty lower files when opening them

fs/ecryptfs/ecryptfs_kernel.h | 1 +
fs/ecryptfs/file.c | 71 ++++++++++++++++++++++++++---------------
fs/ecryptfs/inode.c | 2 +-
3 files changed, 47 insertions(+), 27 deletions(-)

--
1.7.9.5


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From: Colin Ian King <colin.king@canonical.com>

BugLink: https://launchpad.net/bugs/911507

SRU justification:

Impact:

eCryptfs only initialized lower files in the ecryptfs_create() path.
A number of users have reported empty lower files in beneath their
eCryptfs mounts. The presence of empty files causes problems due to
the lack of proper cryptographic metadata.

Fix:

Backport upstream commit e3ccaa9761200952cc269b1f4b7d7bb77a5e071b

Testcase:

http://bazaar.launchpad.net/~colin-king/ecryptfs/test-fixes/revision/723

sudo ./tests/run_tests.sh -K -c safe -b 1000000 -D /tmp/image -l /lower -u /upper
-f ext2,ext3,ext4,xfs,btrfs -t lp-911507.sh

Without the fix, this test fails. With the fix, it passes.

Note: Tested this against all other eCryptfs tests to ensure we don't regress
plus did 1+ hour soak test of multiple parallel builds.

Colin Ian King (1):
eCryptfs: Initialize empty lower files when opening them

fs/ecryptfs/ecryptfs_kernel.h | 1 +
fs/ecryptfs/file.c | 70 ++++++++++++++++++++++++++---------------
fs/ecryptfs/inode.c | 2 +-
3 files changed, 47 insertions(+), 26 deletions(-)

--
1.7.9.5


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