Added support for fasync system call and replacement of spinXXX by can_spinXXX

[lincan.git] / lincan / src / fasync.c

diff --git a/lincan/src/fasync.c b/lincan/src/fasync.c
new file mode 100644 (file)
index 0000000..bca32e0
--- /dev/null
+++ b/lincan/src/fasync.c
@@ -0,0 +1,40 @@
+/* open.c
+ * Linux CAN-bus device driver.
+ * Written by Arnaud Westenberg email:arnaud@wanadoo.nl
+ * Rewritten for new CAN queues by Pavel Pisa - OCERA team member
+ * email:pisa@cmp.felk.cvut.cz
+ * This software is released under the GPL-License.
+ * Version lincan-0.2  9 Jul 2003
+ */
+
+#include "../include/can.h"
+#include "../include/can_sysdep.h"
+#include "../include/main.h"
+#include "../include/fasync.h"
+
+#ifdef CAN_ENABLE_KERN_FASYNC
+
+int can_fasync(int fd, struct file *file, int on)
+{
+       struct canuser_t *canuser = (struct canuser_t*)(file->private_data);
+       struct canque_ends_t *qends;
+       
+       if(!canuser || (canuser->magic != CAN_USER_MAGIC)){
+               CANMSG("can_close: bad canuser magic\n");
+               return -ENODEV;
+       }
+       
+       qends = canuser->qends;
+
+       int retval = fasync_helper(fd, file, on, &qends->endinfo.fileinfo.fasync);
+
+       if (retval < 0)
+               return retval;
+       return 0;
+}
+
+
+
+
+
+#endif /*CAN_ENABLE_KERN_FASYNC*/