Wu, Josh dd6d7967df fs/fat: correct FAT16/12 file finding in root dir ... When write a file into FAT file system, it will search a match file in root dir. So the find_directory_entry() will get the first cluster of root dir content and search the directory item one by one. If the file is not found, we will call get_fatent_value() to get next cluster of root dir via lookup the FAT table and continue the search. The issue is in FAT16/12 system, we cannot get root dir's next clust from FAT table. The FAT table only be use to find the clust of data aera in FAT16/12. In FAT16/12 if the clust is in root dir, the clust number is a negative number or 0, 1. Since root dir is located in front of the data area. Data area start clust #2. So the root dir clust number should < 2. This patch will check above situation before call get_fatenv_value(). If curclust is < 2, include minus number, we just increase one on the curclust since root dir is in continous cluster. The patch also add a sanity check for entry in get_fatenv_value(). Signed-off-by: Josh Wu <josh.wu@atmel.com>		2014-05-12 16:31:51 -04:00
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fat_write.c	fs/fat: correct FAT16/12 file finding in root dir	2014-05-12 16:31:51 -04:00
fat.c	fat: implement exists() for FAT fs	2014-02-19 09:47:34 -05:00
file.c	Add GPL-2.0+ SPDX-License-Identifier to source files	2013-07-24 09:44:38 -04:00
Makefile	fs: convert makefiles to Kbuild style	2013-10-31 13:26:01 -04:00