diff options
| author | Linus Nielsen Feltzing <linus@haxx.se> | 2003-07-19 00:34:22 +0000 |
|---|---|---|
| committer | Linus Nielsen Feltzing <linus@haxx.se> | 2003-07-19 00:34:22 +0000 |
| commit | 68125796b8a6d42990a0d2da8dd5119594fc27fe (patch) | |
| tree | 1322baab1ab1380ba262484ae15c9c18c3dc92af /firmware/drivers/fat.c | |
| parent | b5b73045640f80dff419284e042ea30a06e8bbe3 (diff) | |
Another go at the disk-full FAT driver fix. Now it skips the reserved sectors at all times.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@3847 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/drivers/fat.c')
| -rw-r--r-- | firmware/drivers/fat.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/firmware/drivers/fat.c b/firmware/drivers/fat.c index 099417baca..079bf1ea10 100644 --- a/firmware/drivers/fat.c +++ b/firmware/drivers/fat.c @@ -550,10 +550,6 @@ static unsigned int find_free_cluster(unsigned int startcluster) unsigned int offset; unsigned int i; - /* Cluster 0 and 1 are reserved */ - if(startcluster < 2) - startcluster = 2; - sector = startcluster / CLUSTERS_PER_FAT_SECTOR; offset = startcluster % CLUSTERS_PER_FAT_SECTOR; @@ -567,7 +563,9 @@ static unsigned int find_free_cluster(unsigned int startcluster) int k = (j + offset) % CLUSTERS_PER_FAT_SECTOR; if (!(SWAB32(fat[k]) & 0x0fffffff)) { unsigned int c = nr * CLUSTERS_PER_FAT_SECTOR + k; - if ( c > fat_bpb.dataclusters+1 ) /* nr 0 is unused */ + /* Ignore the reserved clusters 0 & 1, and also + cluster numbers out of bounds */ + if ( c < 2 || c > fat_bpb.dataclusters+1 ) continue; LDEBUGF("find_free_cluster(%x) == %x\n",startcluster,c); fat_bpb.fsinfo.nextfree = c; |