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authorTien Fong Chee <tfchee@altera.com>2016-07-27 23:08:56 -0700
committerTom Rini <trini@konsulko.com>2016-11-28 20:09:45 -0500
commit7aa1a6b71c9af4651f6b3a164c84096a84d24285 (patch)
treeb47cc2339c644563f59ffb2474c6b6105af76cbe /fs/fat
parente94793c844a40606252f2e3f6428063e057b3fd2 (diff)
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fs/fat/fatwrite: Local variable as buffer to store dir_slot entries
fill_dir_slot use get_contents_vfatname_block as a temporary buffer for constructing a list of dir_slot entries. To save the memory and providing correct type of memory for above usage, a local buffer with accurate size declaration is introduced. The local array size 640 is used because for long file name entry, each entry use 32 bytes, one entry can store up to 13 characters. The maximum number of entry possible is 20. So, total size is 32*20=640bytes. Signed-off-by: Genevieve Chan <ccheauya@altera.com> Signed-off-by: Tien Fong Chee <tfchee@altera.com>
Diffstat (limited to 'fs/fat')
-rw-r--r--fs/fat/fat_write.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/fat/fat_write.c b/fs/fat/fat_write.c
index 0583af3..40a3860 100644
--- a/fs/fat/fat_write.c
+++ b/fs/fat/fat_write.c
@@ -327,7 +327,8 @@ static void flush_dir_table(fsdata *mydata, dir_entry **dentptr);
static void
fill_dir_slot(fsdata *mydata, dir_entry **dentptr, const char *l_name)
{
- dir_slot *slotptr = (dir_slot *)get_contents_vfatname_block;
+ __u8 temp_dir_slot_buffer[MAX_LFN_SLOT * sizeof(dir_slot)];
+ dir_slot *slotptr = (dir_slot *)temp_dir_slot_buffer;
__u8 counter = 0, checksum;
int idx = 0, ret;