patch-2.1.33 linux/drivers/pnp/parport_procfs.c

• Lines: 127
• Date: Wed Apr 9 21:30:31 1997
• Orig file: v2.1.32/linux/drivers/pnp/parport_procfs.c
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.1.32/linux/drivers/pnp/parport_procfs.c linux/drivers/pnp/parport_procfs.c
@@ -0,0 +1,126 @@
+/* $Id: parport_procfs.c,v 1.1.2.2 1997/03/26 17:50:36 phil Exp $
+ * Parallel port /proc interface code.
+ * 
+ * Authors: David Campbell <campbell@tirian.che.curtin.edu.au>
+ *          Tim Waugh <tmw20@cam.ac.uk>
+ *
+ * based on work by Grant Guenther <grant@torque.net>
+ *              and Philip Blundell <Philip.Blundell@pobox.com>
+ */
+
+#include <asm/ptrace.h>
+#include <asm/io.h>
+#include <asm/dma.h>
+
+#include <linux/delay.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/ioport.h>
+#include <linux/kernel.h>
+#include <linux/malloc.h>
+
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#endif
+
+#include <linux/parport.h>
+
+#if defined(CONFIG_PROC_FS) && defined(NOT_DEFINED)
+
+/************************************************/
+static long proc_readparport(struct inode * inode, struct file * file,
+							 char * buf, unsigned long count)
+{
+	printk("proc_readparport\n");
+	return 0;
+}
+
+static long proc_writeparport(struct inode * inode, struct file * file,
+							  const char * buf, unsigned long count)
+{
+	printk("proc_writeparport\n");
+	
+	return 0;
+}
+
+static long long proc_parportlseek(struct inode * inode, struct file * file, 
+				long long offset, int orig)
+{
+    switch (orig) {
+    case 0:
+	file->f_pos = offset;
+	return(file->f_pos);
+    case 1:
+	file->f_pos += offset;
+	return(file->f_pos);
+    case 2:
+	return(-EINVAL);
+    default:
+	return(-EINVAL);
+    }
+}
+
+static struct file_operations proc_dir_operations = {
+    proc_parportlseek,	/* lseek   */
+    proc_readparport,	/* read	   */
+    proc_writeparport,	/* write   */
+    proc_readdir,	    /* readdir */
+    NULL,		/* poll    */
+    NULL,		/* ioctl   */
+    NULL,		/* mmap	   */
+    NULL,		/* no special open code	   */
+    NULL,		/* no special release code */
+    NULL		/* can't fsync */
+};
+
+/************************************************/
+static struct inode_operations parport_proc_dir_inode_operations = {
+	&proc_dir_operations,	/* default net directory file-ops */
+	NULL,			/* create */
+	proc_lookup,	/* lookup */
+	NULL,			/* link */
+	NULL,			/* unlink */
+	NULL,			/* symlink */
+	NULL,			/* mkdir */
+	NULL,			/* rmdir */
+	NULL,			/* mknod */
+	NULL,			/* rename */
+	NULL,			/* readlink */
+	NULL,			/* follow_link */
+	NULL,			/* readpage */
+	NULL,			/* writepage */
+	NULL,			/* bmap */
+	NULL,			/* truncate */
+	NULL			/* permission */
+};
+
+static struct proc_dir_entry proc_root_parport = {
+	PROC_PARPORT, 7, "parport",
+	S_IFDIR | S_IRUGO | S_IXUGO, 2, 0, 0,
+	0, &parport_proc_dir_inode_operations,
+	NULL, NULL,
+	NULL, &proc_root, NULL,
+	NULL, NULL
+};
+#endif
+
+int parport_proc_register(struct parport *pp)
+{
+#if defined(CONFIG_PROC_FS) && defined(NOT_DEFINED)
+	return proc_register(&proc_root, &proc_root_parport);
+#else
+	return 0;
+#endif
+}
+
+void parport_proc_unregister(struct parport *pp)
+{
+#if defined(CONFIG_PROC_FS) && defined(NOT_DEFINED)
+	if( pp ){
+		proc_unregister(&proc_root_parport, pp->proc_dir->low_ino);
+		kfree(pp->proc_dir);
+	}else{
+		proc_unregister(&proc_root, proc_root_parport.low_ino);
+	}
+#endif
+}