VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)

[linux-2.6.git] / drivers / char / watchdog / acquirewdt.c

diff --git a/drivers/char/watchdog/acquirewdt.c b/drivers/char/watchdog/acquirewdt.c
index acb25de..8f30212 100644 (file)
--- a/drivers/char/watchdog/acquirewdt.c
+++ b/drivers/char/watchdog/acquirewdt.c
@@ -111,12 +111,8 @@ static void acq_stop(void)
  *     /dev/watchdog handling.
  */
 
-static ssize_t acq_write(struct file *file, const char *buf, size_t count, loff_t *ppos)
+static ssize_t acq_write(struct file *file, const char __user *buf, size_t count, loff_t *ppos)
 {
-       /*  Can't seek (pwrite) on this device  */
-       if (ppos != &file->f_pos)
-               return -ESPIPE;
-
        /* See if we got the magic character 'V' and reload the timer */
        if(count) {
                if (!nowayout) {
@@ -146,6 +142,8 @@ static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
        unsigned long arg)
 {
        int options, retval = -EINVAL;
+       void __user *argp = (void __user *)arg;
+       int __user *p = argp;
        static struct watchdog_info ident =
        {
                .options = WDIOF_KEEPALIVEPING | WDIOF_MAGICCLOSE,
@@ -156,22 +154,22 @@ static int acq_ioctl(struct inode *inode, struct file *file, unsigned int cmd,
        switch(cmd)
        {
        case WDIOC_GETSUPPORT:
-         return copy_to_user((struct watchdog_info *)arg, &ident, sizeof(ident)) ? -EFAULT : 0;
+         return copy_to_user(argp, &ident, sizeof(ident)) ? -EFAULT : 0;
 
        case WDIOC_GETSTATUS:
        case WDIOC_GETBOOTSTATUS:
-         return put_user(0, (int *)arg);
+         return put_user(0, p);
 
        case WDIOC_KEEPALIVE:
          acq_keepalive();
          return 0;
 
        case WDIOC_GETTIMEOUT:
-         return put_user(WATCHDOG_HEARTBEAT, (int *)arg);
+         return put_user(WATCHDOG_HEARTBEAT, p);
 
        case WDIOC_SETOPTIONS:
        {
-           if (get_user(options, (int *)arg))
+           if (get_user(options, p))
              return -EFAULT;
 
            if (options & WDIOS_DISABLECARD)
@@ -204,7 +202,7 @@ static int acq_open(struct inode *inode, struct file *file)
 
        /* Activate */
        acq_keepalive();
-       return 0;
+       return nonseekable_open(inode, file);
 }
 
 static int acq_close(struct inode *inode, struct file *file)