Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 130 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/loop.h b/pfinet/linux-src/include/linux/loop.h
new file mode 100644
index 00000000..d276911c
--- /dev/null
+++ b/pfinet/linux-src/include/linux/loop.h
@@ -0,0 +1,130 @@
+#ifndef _LINUX_LOOP_H
+#define _LINUX_LOOP_H
+
+#include <linux/kdev_t.h>
+
+/*
+ * include/linux/loop.h
+ *
+ * Written by Theodore Ts'o, 3/29/93.
+ *
+ * Copyright 1993 by Theodore Ts'o.  Redistribution of this file is
+ * permitted under the GNU Public License.
+ */
+
+#define LO_NAME_SIZE	64
+#define LO_KEY_SIZE	32
+
+#ifdef __KERNEL__
+       
+struct loop_device {
+	int		lo_number;
+	struct dentry	*lo_dentry;
+	int		lo_refcnt;
+	kdev_t		lo_device;
+	int		lo_offset;
+	int		lo_encrypt_type;
+	int		lo_encrypt_key_size;
+	int		lo_flags;
+	int		(*transfer)(struct loop_device *, int cmd,
+				    char *raw_buf, char *loop_buf, int size,
+				    int real_block);
+	char		lo_name[LO_NAME_SIZE];
+	char		lo_encrypt_key[LO_KEY_SIZE];
+	__u32           lo_init[2];
+	uid_t		lo_key_owner;	/* Who set the key */
+	int		(*ioctl)(struct loop_device *, int cmd, 
+				 unsigned long arg); 
+
+	struct file *	lo_backing_file;
+	void		*key_data; 
+	char		key_reserved[48]; /* for use by the filter modules */
+};
+
+typedef	int (* transfer_proc_t)(struct loop_device *, int cmd,
+				char *raw_buf, char *loop_buf, int size,
+				int real_block);
+
+#endif /* __KERNEL__ */
+
+/*
+ * Loop flags
+ */
+#define LO_FLAGS_DO_BMAP	0x00000001
+#define LO_FLAGS_READ_ONLY	0x00000002
+
+/* 
+ * Note that this structure gets the wrong offsets when directly used
+ * from a glibc program, because glibc has a 32bit dev_t.
+ * Prevent people from shooting in their own foot.  
+ */
+#if __GLIBC__ >= 2 && !defined(dev_t)
+#error "Wrong dev_t in loop.h"
+#endif 
+
+/*
+ *	This uses kdev_t because glibc currently has no appropiate
+ *	conversion version for the loop ioctls. 
+ * 	The situation is very unpleasant	
+ */
+
+struct loop_info {
+	int		lo_number;	/* ioctl r/o */
+	dev_t		lo_device; 	/* ioctl r/o */
+	unsigned long	lo_inode; 	/* ioctl r/o */
+	dev_t		lo_rdevice; 	/* ioctl r/o */
+	int		lo_offset;
+	int		lo_encrypt_type;
+	int		lo_encrypt_key_size; 	/* ioctl w/o */
+	int		lo_flags;	/* ioctl r/o */
+	char		lo_name[LO_NAME_SIZE];
+	unsigned char	lo_encrypt_key[LO_KEY_SIZE]; /* ioctl w/o */
+	unsigned long	lo_init[2];
+	char		reserved[4];
+};
+
+/*
+ * Loop filter types
+ */
+
+#define LO_CRYPT_NONE	  0
+#define LO_CRYPT_XOR	  1
+#define LO_CRYPT_DES	  2
+#define LO_CRYPT_FISH2    3    /* Brand new Twofish encryption */
+#define LO_CRYPT_BLOW     4
+#define LO_CRYPT_CAST128  5
+#define LO_CRYPT_IDEA     6
+#define LO_CRYPT_DUMMY    9
+#define LO_CRYPT_SKIPJACK 10
+#define MAX_LO_CRYPT	20
+
+#ifdef __KERNEL__
+/* Support for loadable transfer modules */
+struct loop_func_table {
+	int number; 	/* filter type */ 
+	int (*transfer)(struct loop_device *lo, int cmd, 
+			char *raw_buf, char *loop_buf, int size,
+			int real_block);
+	int (*init)(struct loop_device *, struct loop_info *); 
+	/* release is called from loop_unregister_transfer or clr_fd */
+	int (*release)(struct loop_device *); 
+	int (*ioctl)(struct loop_device *, int cmd, unsigned long arg);
+	/* lock and unlock manage the module use counts */ 
+	void (*lock)(struct loop_device *);
+	void (*unlock)(struct loop_device *);
+}; 
+
+int  loop_register_transfer(struct loop_func_table *funcs);
+int loop_unregister_transfer(int number); 
+
+#endif
+/*
+ * IOCTL commands --- we will commandeer 0x4C ('L')
+ */
+
+#define LOOP_SET_FD	0x4C00
+#define LOOP_CLR_FD	0x4C01
+#define LOOP_SET_STATUS	0x4C02
+#define LOOP_GET_STATUS	0x4C03
+
+#endif