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driver core: add uid and gid to devtmpfs

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Some drivers want to tell userspace what uid and gid should be used for
their device nodes, so allow that information to percolate through the
driver core to userspace in order to make this happen.  This means that
some systems (i.e.  Android and friends) will not need to even run a
udev-like daemon for their device node manager and can just rely in
devtmpfs fully, reducing their footprint even more.

Signed-off-by: Kay Sievers <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Kay Sievers 2013-04-06 09:56:00 -07:00 • committed by Greg Kroah-Hartman
commit 3c2670e651
5 changed files with 39 additions and 18 deletions
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3
block/genhd.c
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@ -1111,7 +1111,8 @@ struct class block_class = {
.name = "block",
};
static char *block_devnode(struct device *dev, umode_t *mode)
static char *block_devnode(struct device *dev, umode_t *mode,
uid_t *uid, gid_t *gid)
{
struct gendisk *disk = dev_to_disk(dev);