提交 d7dd8a72 编写于 作者: L Linus Torvalds

Use the new "kill_proc_info_as_uid()" for USB disconnect too

All the same issues - we can't just save the pointer to the thread, we
must save the pid/uid/euid combination.
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 46113830
......@@ -530,7 +530,9 @@ static int usbdev_open(struct inode *inode, struct file *file)
INIT_LIST_HEAD(&ps->async_completed);
init_waitqueue_head(&ps->wait);
ps->discsignr = 0;
ps->disctask = current;
ps->disc_pid = current->pid;
ps->disc_uid = current->uid;
ps->disc_euid = current->euid;
ps->disccontext = NULL;
ps->ifclaimed = 0;
wmb();
......
......@@ -713,7 +713,7 @@ void usbfs_remove_device(struct usb_device *dev)
sinfo.si_errno = EPIPE;
sinfo.si_code = SI_ASYNCIO;
sinfo.si_addr = ds->disccontext;
send_sig_info(ds->discsignr, &sinfo, ds->disctask);
kill_proc_info_as_uid(ds->discsignr, &sinfo, ds->disc_pid, ds->disc_uid, ds->disc_euid);
}
}
usbfs_update_special();
......
......@@ -52,7 +52,8 @@ struct dev_state {
struct list_head async_completed;
wait_queue_head_t wait; /* wake up if a request completed */
unsigned int discsignr;
struct task_struct *disctask;
pid_t disc_pid;
uid_t disc_uid, disc_euid;
void __user *disccontext;
unsigned long ifclaimed;
};
......
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