devs/foxbox
1
0
Fork 0
forked from len0rd/rockbox
Code Pull requests Activity

panic on write behind partition, too

Browse source 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@5171 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jörg Hohensohn 2004-10-05 07:55:31 +00:00
parent 22034ce5c2
commit 540b19dc50
1 changed files with 9 additions and 7 deletions
Download patch file Download diff file Expand all files Collapse all files

16
firmware/drivers/fat.c
View file

@ -1861,9 +1861,8 @@ static int transfer( unsigned int start, int count, char* buf, bool write )
{
int rc;
start += fat_bpb.startsector; /* offset by partition location */
LDEBUGF("transfer(s=%x, c=%x, %s)\n",start, count, write?"write":"read");
LDEBUGF("transfer(s=%x, c=%x, %s)\n",
start+ fat_bpb.startsector, count, write?"write":"read");
if (write) {
unsigned int firstallowed;
#ifdef HAVE_FAT16SUPPORT
@ -1873,12 +1872,15 @@ static int transfer( unsigned int start, int count, char* buf, bool write )
#endif
firstallowed = fat_bpb.firstdatasector;
if (start < firstallowed + fat_bpb.startsector)
panicf("Writing before data\n");
rc = ata_write_sectors(start, count, buf);
if (start < firstallowed)
panicf("Write %d before data\n", firstallowed - start);
if (start + count > fat_bpb.totalsectors)
panicf("Write %d after data\n",
start + count - fat_bpb.totalsectors);
rc = ata_write_sectors(start + fat_bpb.startsector, count, buf);
}
else
rc = ata_read_sectors(start, count, buf);
rc = ata_read_sectors(start + fat_bpb.startsector, count, buf);
if (rc < 0) {
DEBUGF( "transfer() - Couldn't %s sector %x"
" (error code %d)\n",