From 2e98f70882f8c1a09b662137884c1435a97c9a1c Mon Sep 17 00:00:00 2001 From: "Wu, Josh" Date: Thu, 8 May 2014 16:14:06 +0800 Subject: fs: fat_write: fix the incorrect last cluster checking In fat_write.c, the last clust condition check is incorrect: if ((curclust >= 0xffffff8) || (curclust >= 0xfff8)) { ... ... } For example, in FAT32 if curclust is 0x11000. It is a valid clust. But on above condition check, it will be think as a last clust. So the correct last clust check should be: in fat32, curclust >= 0xffffff8 in fat16, curclust >= 0xfff8 in fat12, curclust >= 0xff8 This patch correct the last clust check. Signed-off-by: Josh Wu --- fs/fat/fat_write.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/fat/fat_write.c') diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c index cef138ec96..90d6ab63bf 100644 --- a/fs/fat/fat_write.c +++ b/fs/fat/fat_write.c @@ -882,7 +882,7 @@ static dir_entry *find_directory_entry(fsdata *mydata, int startsect, } curclust = get_fatent_value(mydata, dir_curclust); - if ((curclust >= 0xffffff8) || (curclust >= 0xfff8)) { + if (IS_LAST_CLUST(curclust, mydata->fatsize)) { empty_dentptr = dentptr; return NULL; } -- cgit v1.2.1