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4afb9996a2
linux/fs/ubifs
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Eric Biggers 4afb9996a2 ubifs: require key for truncate(2) of encrypted file 
Currently, filesystems allow truncate(2) on an encrypted file without
the encryption key.  However, it's impossible to correctly handle the
case where the size being truncated to is not a multiple of the
filesystem block size, because that would require decrypting the final
block, zeroing the part beyond i_size, then encrypting the block.

As other modifications to encrypted file contents are prohibited without
the key, just prohibit truncate(2) as well, making it fail with ENOKEY.

Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
2017-07-05 23:52:50 +02:00
..
budget.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
commit.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
compress.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
crypto.c fscrypt: constify struct fscrypt_operations 2017-02-08 10:59:57 -05:00
debug.c ubifs: Fix cut and paste error on sb type comparisons 2017-05-08 20:48:41 +02:00
debug.h UBIFS: print less 2012-08-31 17:32:58 +03:00
dir.c Merge branch 'akpm' (patches from Andrew) 2017-05-08 18:17:56 -07:00
file.c ubifs: require key for truncate(2) of encrypted file 2017-07-05 23:52:50 +02:00
find.c UBIFS: fix mounting problems after power cuts 2012-10-26 16:26:44 +03:00
gc.c ubifs: Remove some dead code 2016-12-12 23:06:28 +01:00
io.c ubifs: Use dirty_writeback_interval value for wbuf timer 2016-12-12 23:06:24 +01:00
ioctl.c This pull request contains updates for both UBI and UBIFS: 2017-05-13 10:23:12 -07:00
journal.c ubifs: fix unencrypted journal write 2017-01-17 14:05:23 +01:00
Kconfig ubifs: Add CONFIG_UBIFS_FS_SECURITY to disable/enable security labels 2017-05-08 20:48:23 +02:00
key.h ubifs: Implement encrypted filenames 2016-12-12 23:07:38 +01:00
log.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
lprops.c UBIFS: improve function-level documentation 2016-10-02 22:55:02 +02:00
lpt_commit.c UBIFS: improve function-level documentation 2016-10-02 22:55:02 +02:00
lpt.c UBIFS: use kmemdup rather than duplicating its implementation 2015-10-03 20:03:14 +02:00
Makefile ubifs: Add skeleton for fscrypto 2016-12-12 23:07:38 +01:00
master.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
misc.c ubifs: Add logging functions for ubifs_msg, ubifs_err and ubifs_warn 2016-03-20 21:36:05 +01:00
misc.h fs: ubifs: replace CURRENT_TIME_SEC with current_time 2017-05-08 17:15:15 -07:00
orphan.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
recovery.c ubifs: Remove unnecessary assignment 2017-05-08 20:48:47 +02:00
replay.c ubifs: Implement encrypted filenames 2016-12-12 23:07:38 +01:00
sb.c fs: ubifs: replace CURRENT_TIME_SEC with current_time 2017-05-08 17:15:15 -07:00
scan.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
shrinker.c UBIFS: Remove incorrect assertion in shrink_tnc() 2014-06-02 11:28:24 +03:00
super.c ubifs: Convert to separately allocated bdi 2017-04-20 12:09:55 -06:00
tnc_commit.c ubifs: Fix assertion in layout_in_gaps() 2016-08-23 23:02:40 +02:00
tnc_misc.c UBIFS: extend debug/message capabilities 2015-03-25 11:08:41 +02:00
tnc.c ubifs: Fix journal replay wrt. xattr nodes 2017-01-17 14:35:58 +01:00
ubifs-media.h ubifs: Raise write version to 5 2016-12-12 23:07:38 +01:00
ubifs.h This pull request contains updates for both UBI and UBIFS: 2017-05-13 10:23:12 -07:00
xattr.c This pull request contains updates for both UBI and UBIFS: 2017-05-13 10:23:12 -07:00