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Block: Fix whole_disk attribute bug

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The "whole_disk" attribute was not properly converted in the block
device conversion earlier, and if the file is read, bad things can
happen.  This patch fixes this, making the attribute an empty one,
preserving the original functionality.

Many thanks to David Miller for finding this, and pointing me in the
proper place within the block code to look.

Acked-by: David S. Miller <davem@davemloft.net>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Greg Kroah-Hartman 2008-02-06 23:33:39 -08:00
parent 0afc2edfad
commit f4a00a2c06
1 changed files with 10 additions and 7 deletions
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17
fs/partitions/check.c
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@ -319,6 +319,14 @@ void delete_partition(struct gendisk *disk, int part)
put_device(&p->dev);
}
static ssize_t whole_disk_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
return 0;
}
static DEVICE_ATTR(whole_disk, S_IRUSR | S_IRGRP | S_IROTH,
whole_disk_show, NULL);
void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len, int flags)
{
struct hd_struct *p;
@ -352,13 +360,8 @@ void add_partition(struct gendisk *disk, int part, sector_t start, sector_t len,
device_add(&p->dev);
partition_sysfs_add_subdir(p);
p->dev.uevent_suppress = 0;
if (flags & ADDPART_FLAG_WHOLEDISK) {
static struct attribute addpartattr = {
.name = "whole_disk",
.mode = S_IRUSR | S_IRGRP | S_IROTH,
};
err = sysfs_create_file(&p->dev.kobj, &addpartattr);
}
if (flags & ADDPART_FLAG_WHOLEDISK)
err = device_create_file(&p->dev, &dev_attr_whole_disk);
/* suppress uevent if the disk supresses it */
if (!disk->dev.uevent_suppress)