Although sun partition labels aren't supposed to support > 1T, apparently
linux partition editors will allow up to 2T. This can cause problems
in the kernel when these larger partitions are read, due to a signed
int container.
num_sectors in the sun_disklabel struct is marked as __u32 in 2.4, and
as __be32 in 2.6. However, this is assigned to a signed int in
sun_partition():
int num_sectors;
st_sector = be32_to_cpu(p->start_cylinder) * spc;
num_sectors = be32_to_cpu(p->num_sectors);
Changing num_sectors to an unsigned int avoids this problem.
Thanks,
-Eric
Signed-off-by: Eric Sandeen <[email protected]>
Index: linux-2.6.17/fs/partitions/sun.c
===================================================================
--- linux-2.6.17.orig/fs/partitions/sun.c
+++ linux-2.6.17/fs/partitions/sun.c
@@ -74,7 +74,7 @@ int sun_partition(struct parsed_partitio
spc = be16_to_cpu(label->ntrks) * be16_to_cpu(label->nsect);
for (i = 0; i < 8; i++, p++) {
unsigned long st_sector;
- int num_sectors;
+ unsigned int num_sectors;
st_sector = be32_to_cpu(p->start_cylinder) * spc;
num_sectors = be32_to_cpu(p->num_sectors);
-
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