grab and open/close device, now enters read (and crashes)

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>

1 files changed, 23 insertions, 1 deletions

diff --git a/src/mtouch.c b/src/mtouch.c
index 2d05921..a74a1f6 100644
--- a/src/mtouch.c
+++ b/src/mtouch.c
@@ -14,9 +14,31 @@ int configure_mtouch(struct MTouch *mt, int fd)
 
 /******************************************************/
 
-int init_mtouch(struct MTouch *mt)
+int open_mtouch(struct MTouch *mt, int fd)
 {
+        int rc;
+        if (mt->grabbed)
+                return 0;
+        SYSCALL(rc = ioctl(fd, EVIOCGRAB, (pointer)1));
+        if (rc < 0) {
+                xf86Msg(X_WARNING, "multitouch: cannot grab device\n");
+                return rc;
+        }
+        mt->grabbed = 1;
         return 0;
 }
 
 /******************************************************/
+
+void close_mtouch(struct MTouch *mt, int fd)
+{
+        int rc;
+        if (!mt->grabbed)
+                return 0;
+        SYSCALL(rc = ioctl(fd, EVIOCGRAB, (pointer)0));
+        if (rc < 0)
+                xf86Msg(X_WARNING, "multitouch: cannot ungrab device\n");
+        mt->grabbed = 0;
+}
+
+/******************************************************/