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author | Thomas Fitzsimmons <fitzsim@cisco.com> | 2015-11-18 12:42:53 -0500 |
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committer | Tom Rini <trini@konsulko.com> | 2015-11-23 11:01:52 -0500 |
commit | 54d68e9333ff65d135faac68fa01be4276f1371f (patch) | |
tree | aaf2d56aa76f2b1b3a4566ca60d4e054237ff3f1 /drivers/rtc/rtc4543.c | |
parent | b4bd6554937ca5c13786b6725e122839f5ebe4f7 (diff) | |
download | u-boot-imx-54d68e9333ff65d135faac68fa01be4276f1371f.zip u-boot-imx-54d68e9333ff65d135faac68fa01be4276f1371f.tar.gz u-boot-imx-54d68e9333ff65d135faac68fa01be4276f1371f.tar.bz2 |
fs: ext4: Prevent infinite loop in ext4fs_iterate_dir
If the ext3 journal gets out of sync with what is written on disk, for
example because of an unexpected power cut, ext4fs_read_file can
return an all-zero directory entry. In that case, ext4fs_iterate_dir
would infinite loop.
This patch detects when a directory entry's direntlen member is 0 and
returns a failure status, which breaks out of the infinite loop. As a
result, U-Boot will not find files that may subsequently be recovered
when the journal is replayed.
This is better behaviour than hanging in an infinite loop, but as a
further improvement maybe U-Boot could interpret the ext3 journal and
actually find the unsynced entries.
Signed-off-by: Thomas Fitzsimmons <fitzsim@cisco.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'drivers/rtc/rtc4543.c')
0 files changed, 0 insertions, 0 deletions