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volume_id: vfat - allow all possible sector sizes

Browse Source 
https://bugs.launchpad.net/bugs/147807
This commit is contained in:
Kay Sievers 2007-10-17 17:59:27 +02:00
parent 6e9edde6c9
commit 424520043a
1 changed files with 3 additions and 4 deletions
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7
extras/volume_id/lib/fat.c
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@ -310,7 +310,7 @@ magic:
if (!vs->reserved)
return -1;
/* fat count*/
/* fat count */
if (!vs->fats)
return -1;
@ -318,15 +318,14 @@ magic:
if (vs->media < 0xf8 && vs->media != 0xf0)
return -1;
/* cluster size check*/
/* cluster size check */
if (vs->sectors_per_cluster == 0 ||
(vs->sectors_per_cluster & (vs->sectors_per_cluster-1)))
return -1;
/* sector size check */
sector_size = le16_to_cpu(vs->sector_size);
if (sector_size != 0x200 && sector_size != 0x400 &&
sector_size != 0x800 && sector_size != 0x1000)
if (sector_size == 0 || ((sector_size & (sector_size-1)) != 0))
return -1;
dbg("sector_size 0x%x", sector_size);