From: Serge E. Hallyn <serue@xxxxxxxxxx>
If we want to support an admin clearing all entries, let's
not do it through some subtle hidden channel, but rather
implement a 'CLEAR' command to /dev/caphash, which requires
privilege to use.
Signed-off-by: Serge E. Hallyn <serue@xxxxxxxxxx>
Cc: Greg KH <greg@xxxxxxxxx>
cc: rsc@xxxxxxxxx
Cc: Ashwin Ganti <ashwin.ganti@xxxxxxxxx>
Cc: ericvh@xxxxxxxxx
Cc: devel@xxxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Cc: Ron Minnich <rminnich@xxxxxxxxx>
---
drivers/staging/p9auth/p9auth.c | 7 -------
1 files changed, 0 insertions(+), 7 deletions(-)
diff --git a/drivers/staging/p9auth/p9auth.c b/drivers/staging/p9auth/p9auth.c
index 6012bd9..06128c3 100644
--- a/drivers/staging/p9auth/p9auth.c
+++ b/drivers/staging/p9auth/p9auth.c
@@ -146,13 +146,6 @@ static int cap_open(struct inode *inode, struct file *filp)
dev = container_of(inode->i_cdev, struct cap_dev, cdev);
filp->private_data = dev;
- /* trim to 0 the length of the device if open was write-only */
- if ((filp->f_flags & O_ACCMODE) == O_WRONLY) {
- if (down_interruptible(&dev->sem))
- return -ERESTARTSYS;
- cap_trim(dev);
- up(&dev->sem);
- }
/* initialise the head if it is NULL */
if (dev->head == NULL) {
dev->head = kmalloc(sizeof(struct cap_node), GFP_KERNEL);
--
1.6.1
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