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(parent: 3a76e5e) | patch
debugfs: write_file_bool() - ensure strtobool() operates on valid data
authorMathias Krause <minipli@googlemail.com>
Fri, 31 May 2013 21:24:29 +0000 (23:24 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 3 Jun 2013 20:55:02 +0000 (13:55 -0700)
commita3b2c8c7aa1ca860edcf0b0afa371d9eb2269c3c
tree45f73dde89f44a0dd67e26859effd3cbe90286d8tree | snapshot (tar.gz zip)
parent3a76e5e09fbb51e756b4e732e3e65446f4984cf5commit | diff
debugfs: write_file_bool() - ensure strtobool() operates on valid data

In case, userland writes an empty string to a bool debugfs file, buf[]
will still be uninitialized when being passed to strtobool() making the
outcome of that function purely random.

Fix this by always zero-terminating the buffer.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
fs/debugfs/file.c diff | blob | blame | history