freifunkist-firmware/package/openssl/patches/205-use_local_cryptodev_h.patch

diff -Nur openssl-0.9.8h/crypto/engine/cryptodev.h openssl-0.9.8h-ocf/crypto/engine/cryptodev.h
--- openssl-0.9.8h/crypto/engine/cryptodev.h	1970-01-01 01:00:00.000000000 +0100
+++ openssl-0.9.8h-ocf/crypto/engine/cryptodev.h	2008-07-13 15:32:53.000000000 +0200
@@ -0,0 +1,478 @@
+/*	$FreeBSD: src/sys/opencrypto/cryptodev.h,v 1.25 2007/05/09 19:37:02 gnn Exp $	*/
+/*	$OpenBSD: cryptodev.h,v 1.31 2002/06/11 11:14:29 beck Exp $	*/
+
+/*-
+ * Linux port done by David McCullough <david_mccullough@securecomputing.com>
+ * Copyright (C) 2006-2007 David McCullough
+ * Copyright (C) 2004-2005 Intel Corporation.
+ * The license and original author are listed below.
+ *
+ * The author of this code is Angelos D. Keromytis (angelos@cis.upenn.edu)
+ * Copyright (c) 2002-2006 Sam Leffler, Errno Consulting
+ *
+ * This code was written by Angelos D. Keromytis in Athens, Greece, in
+ * February 2000. Network Security Technologies Inc. (NSTI) kindly
+ * supported the development of this code.
+ *
+ * Copyright (c) 2000 Angelos D. Keromytis
+ *
+ * Permission to use, copy, and modify this software with or without fee
+ * is hereby granted, provided that this entire notice is included in
+ * all source code copies of any software which is or includes a copy or
+ * modification of this software.
+ *
+ * THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
+ * IMPLIED WARRANTY. IN PARTICULAR, NONE OF THE AUTHORS MAKES ANY
+ * REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
+ * MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
+ * PURPOSE.
+ *
+ * Copyright (c) 2001 Theo de Raadt
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *   derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Effort sponsored in part by the Defense Advanced Research Projects
+ * Agency (DARPA) and Air Force Research Laboratory, Air Force
+ * Materiel Command, USAF, under agreement number F30602-01-2-0537.
+ *
+ */
+
+#ifndef _CRYPTO_CRYPTO_H_
+#define _CRYPTO_CRYPTO_H_
+
+/* Some initial values */
+#define CRYPTO_DRIVERS_INITIAL	4
+#define CRYPTO_SW_SESSIONS	32
+
+/* Hash values */
+#define NULL_HASH_LEN		0
+#define MD5_HASH_LEN		16
+#define SHA1_HASH_LEN		20
+#define RIPEMD160_HASH_LEN	20
+#define SHA2_256_HASH_LEN	32
+#define SHA2_384_HASH_LEN	48
+#define SHA2_512_HASH_LEN	64
+#define MD5_KPDK_HASH_LEN	16
+#define SHA1_KPDK_HASH_LEN	20
+/* Maximum hash algorithm result length */
+#define HASH_MAX_LEN		SHA2_512_HASH_LEN /* Keep this updated */
+
+/* HMAC values */
+#define NULL_HMAC_BLOCK_LEN			1
+#define MD5_HMAC_BLOCK_LEN			64
+#define SHA1_HMAC_BLOCK_LEN			64
+#define RIPEMD160_HMAC_BLOCK_LEN	64
+#define SHA2_256_HMAC_BLOCK_LEN		64
+#define SHA2_384_HMAC_BLOCK_LEN		128
+#define SHA2_512_HMAC_BLOCK_LEN		128
+/* Maximum HMAC block length */
+#define HMAC_MAX_BLOCK_LEN		SHA2_512_HMAC_BLOCK_LEN /* Keep this updated */
+#define HMAC_IPAD_VAL			0x36
+#define HMAC_OPAD_VAL			0x5C
+
+/* Encryption algorithm block sizes */
+#define NULL_BLOCK_LEN			1
+#define DES_BLOCK_LEN			8
+#define DES3_BLOCK_LEN			8
+#define BLOWFISH_BLOCK_LEN		8
+#define SKIPJACK_BLOCK_LEN		8
+#define CAST128_BLOCK_LEN		8
+#define RIJNDAEL128_BLOCK_LEN	16
+#define AES_BLOCK_LEN			RIJNDAEL128_BLOCK_LEN
+#define CAMELLIA_BLOCK_LEN		16
+#define ARC4_BLOCK_LEN			1
+#define EALG_MAX_BLOCK_LEN		AES_BLOCK_LEN /* Keep this updated */
+
+/* Encryption algorithm min and max key sizes */
+#define NULL_MIN_KEY_LEN		0
+#define NULL_MAX_KEY_LEN		0
+#define DES_MIN_KEY_LEN			8
+#define DES_MAX_KEY_LEN			8
+#define DES3_MIN_KEY_LEN		24
+#define DES3_MAX_KEY_LEN		24
+#define BLOWFISH_MIN_KEY_LEN	4
+#define BLOWFISH_MAX_KEY_LEN	56
+#define SKIPJACK_MIN_KEY_LEN	10
+#define SKIPJACK_MAX_KEY_LEN	10
+#define CAST128_MIN_KEY_LEN		5
+#define CAST128_MAX_KEY_LEN		16
+#define RIJNDAEL128_MIN_KEY_LEN	16
+#define RIJNDAEL128_MAX_KEY_LEN	32
+#define AES_MIN_KEY_LEN			RIJNDAEL128_MIN_KEY_LEN
+#define AES_MAX_KEY_LEN			RIJNDAEL128_MAX_KEY_LEN
+#define CAMELLIA_MIN_KEY_LEN	16
+#define CAMELLIA_MAX_KEY_LEN	32
+#define ARC4_MIN_KEY_LEN		1
+#define ARC4_MAX_KEY_LEN		256
+
+/* Max size of data that can be processed */
+#define CRYPTO_MAX_DATA_LEN		64*1024 - 1
+
+#define CRYPTO_ALGORITHM_MIN	1
+#define CRYPTO_DES_CBC			1
+#define CRYPTO_3DES_CBC			2
+#define CRYPTO_BLF_CBC			3
+#define CRYPTO_CAST_CBC			4
+#define CRYPTO_SKIPJACK_CBC		5
+#define CRYPTO_MD5_HMAC			6
+#define CRYPTO_SHA1_HMAC		7
+#define CRYPTO_RIPEMD160_HMAC	8
+#define CRYPTO_MD5_KPDK			9
+#define CRYPTO_SHA1_KPDK		10
+#define CRYPTO_RIJNDAEL128_CBC	11 /* 128 bit blocksize */
+#define CRYPTO_AES_CBC			11 /* 128 bit blocksize -- the same as above */
+#define CRYPTO_ARC4				12
+#define CRYPTO_MD5				13
+#define CRYPTO_SHA1				14
+#define CRYPTO_NULL_HMAC		15
+#define CRYPTO_NULL_CBC			16
+#define CRYPTO_DEFLATE_COMP		17 /* Deflate compression algorithm */
+#define CRYPTO_SHA2_256_HMAC	18
+#define CRYPTO_SHA2_384_HMAC	19
+#define CRYPTO_SHA2_512_HMAC	20
+#define CRYPTO_CAMELLIA_CBC		21
+#define CRYPTO_SHA2_256			22
+#define CRYPTO_SHA2_384			23
+#define CRYPTO_SHA2_512			24
+#define CRYPTO_RIPEMD160		25
+#define CRYPTO_ALGORITHM_MAX	25 /* Keep updated - see below */
+
+/* Algorithm flags */
+#define CRYPTO_ALG_FLAG_SUPPORTED	0x01 /* Algorithm is supported */
+#define CRYPTO_ALG_FLAG_RNG_ENABLE	0x02 /* Has HW RNG for DH/DSA */
+#define CRYPTO_ALG_FLAG_DSA_SHA		0x04 /* Can do SHA on msg */
+
+/*
+ * Crypto driver/device flags.  They can set in the crid
+ * parameter when creating a session or submitting a key
+ * op to affect the device/driver assigned.  If neither
+ * of these are specified then the crid is assumed to hold
+ * the driver id of an existing (and suitable) device that
+ * must be used to satisfy the request.
+ */
+#define CRYPTO_FLAG_HARDWARE	0x01000000	/* hardware accelerated */
+#define CRYPTO_FLAG_SOFTWARE	0x02000000	/* software implementation */
+
+/* NB: deprecated */
+struct session_op {
+	u_int32_t	cipher;		/* ie. CRYPTO_DES_CBC */
+	u_int32_t	mac;		/* ie. CRYPTO_MD5_HMAC */
+
+	u_int32_t	keylen;		/* cipher key */
+	caddr_t		key;
+	int		mackeylen;	/* mac key */
+	caddr_t		mackey;
+
+  	u_int32_t	ses;		/* returns: session # */ 
+};
+
+struct session2_op {
+	u_int32_t	cipher;		/* ie. CRYPTO_DES_CBC */
+	u_int32_t	mac;		/* ie. CRYPTO_MD5_HMAC */
+
+	u_int32_t	keylen;		/* cipher key */
+	caddr_t		key;
+	int		mackeylen;	/* mac key */
+	caddr_t		mackey;
+
+  	u_int32_t	ses;		/* returns: session # */ 
+	int		crid;		/* driver id + flags (rw) */
+	int		pad[4];		/* for future expansion */
+};
+
+struct crypt_op {
+	u_int32_t	ses;
+	u_int16_t	op;		/* i.e. COP_ENCRYPT */
+#define COP_NONE	0
+#define COP_ENCRYPT	1
+#define COP_DECRYPT	2
+	u_int16_t	flags;
+#define	COP_F_BATCH	0x0008		/* Batch op if possible */
+	u_int		len;
+	caddr_t		src, dst;	/* become iov[] inside kernel */
+	caddr_t		mac;		/* must be big enough for chosen MAC */
+	caddr_t		iv;
+};
+
+/*
+ * Parameters for looking up a crypto driver/device by
+ * device name or by id.  The latter are returned for
+ * created sessions (crid) and completed key operations.
+ */
+struct crypt_find_op {
+	int		crid;		/* driver id + flags */
+	char		name[32];	/* device/driver name */
+};
+
+/* bignum parameter, in packed bytes, ... */
+struct crparam {
+	caddr_t		crp_p;
+	u_int		crp_nbits;
+};
+
+#define CRK_MAXPARAM	8
+
+struct crypt_kop {
+	u_int		crk_op;		/* ie. CRK_MOD_EXP or other */
+	u_int		crk_status;	/* return status */
+	u_short		crk_iparams;	/* # of input parameters */
+	u_short		crk_oparams;	/* # of output parameters */
+	u_int		crk_crid;	/* NB: only used by CIOCKEY2 (rw) */
+	struct crparam	crk_param[CRK_MAXPARAM];
+};
+#define CRK_ALGORITM_MIN	0
+#define CRK_MOD_EXP		0
+#define CRK_MOD_EXP_CRT		1
+#define CRK_DSA_SIGN		2
+#define CRK_DSA_VERIFY		3
+#define CRK_DH_COMPUTE_KEY	4
+#define CRK_ALGORITHM_MAX	4 /* Keep updated - see below */
+
+#define CRF_MOD_EXP		(1 << CRK_MOD_EXP)
+#define CRF_MOD_EXP_CRT		(1 << CRK_MOD_EXP_CRT)
+#define CRF_DSA_SIGN		(1 << CRK_DSA_SIGN)
+#define CRF_DSA_VERIFY		(1 << CRK_DSA_VERIFY)
+#define CRF_DH_COMPUTE_KEY	(1 << CRK_DH_COMPUTE_KEY)
+
+/*
+ * done against open of /dev/crypto, to get a cloned descriptor.
+ * Please use F_SETFD against the cloned descriptor.
+ */
+#define CRIOGET		_IOWR('c', 100, u_int32_t)
+#define CRIOASYMFEAT	CIOCASYMFEAT
+#define CRIOFINDDEV	CIOCFINDDEV
+
+/* the following are done against the cloned descriptor */
+#define CIOCGSESSION	_IOWR('c', 101, struct session_op)
+#define CIOCFSESSION	_IOW('c', 102, u_int32_t)
+#define CIOCCRYPT	_IOWR('c', 103, struct crypt_op)
+#define CIOCKEY		_IOWR('c', 104, struct crypt_kop)
+#define CIOCASYMFEAT	_IOR('c', 105, u_int32_t)
+#define CIOCGSESSION2	_IOWR('c', 106, struct session2_op)
+#define CIOCKEY2	_IOWR('c', 107, struct crypt_kop)
+#define CIOCFINDDEV	_IOWR('c', 108, struct crypt_find_op)
+
+struct cryptotstat {
+	struct timespec	acc;		/* total accumulated time */
+	struct timespec	min;		/* min time */
+	struct timespec	max;		/* max time */
+	u_int32_t	count;		/* number of observations */
+};
+
+struct cryptostats {
+	u_int32_t	cs_ops;		/* symmetric crypto ops submitted */
+	u_int32_t	cs_errs;	/* symmetric crypto ops that failed */
+	u_int32_t	cs_kops;	/* asymetric/key ops submitted */
+	u_int32_t	cs_kerrs;	/* asymetric/key ops that failed */
+	u_int32_t	cs_intrs;	/* crypto swi thread activations */
+	u_int32_t	cs_rets;	/* crypto return thread activations */
+	u_int32_t	cs_blocks;	/* symmetric op driver block */
+	u_int32_t	cs_kblocks;	/* symmetric op driver block */
+	/*
+	 * When CRYPTO_TIMING is defined at compile time and the
+	 * sysctl debug.crypto is set to 1, the crypto system will
+	 * accumulate statistics about how long it takes to process
+	 * crypto requests at various points during processing.
+	 */
+	struct cryptotstat cs_invoke;	/* crypto_dipsatch -> crypto_invoke */
+	struct cryptotstat cs_done;	/* crypto_invoke -> crypto_done */
+	struct cryptotstat cs_cb;	/* crypto_done -> callback */
+	struct cryptotstat cs_finis;	/* callback -> callback return */
+
+	u_int32_t	cs_drops;		/* crypto ops dropped due to congestion */
+};
+
+#ifdef __KERNEL__
+
+/* Standard initialization structure beginning */
+struct cryptoini {
+	int		cri_alg;	/* Algorithm to use */
+	int		cri_klen;	/* Key length, in bits */
+	int		cri_mlen;	/* Number of bytes we want from the
+					   entire hash. 0 means all. */
+	caddr_t		cri_key;	/* key to use */
+	u_int8_t	cri_iv[EALG_MAX_BLOCK_LEN];	/* IV to use */
+	struct cryptoini *cri_next;
+};
+
+/* Describe boundaries of a single crypto operation */
+struct cryptodesc {
+	int		crd_skip;	/* How many bytes to ignore from start */
+	int		crd_len;	/* How many bytes to process */
+	int		crd_inject;	/* Where to inject results, if applicable */
+	int		crd_flags;
+
+#define CRD_F_ENCRYPT		0x01	/* Set when doing encryption */
+#define CRD_F_IV_PRESENT	0x02	/* When encrypting, IV is already in
+					   place, so don't copy. */
+#define CRD_F_IV_EXPLICIT	0x04	/* IV explicitly provided */
+#define CRD_F_DSA_SHA_NEEDED	0x08	/* Compute SHA-1 of buffer for DSA */
+#define CRD_F_KEY_EXPLICIT	0x10	/* Key explicitly provided */
+#define CRD_F_COMP		0x0f    /* Set when doing compression */
+
+	struct cryptoini	CRD_INI; /* Initialization/context data */
+#define crd_iv		CRD_INI.cri_iv
+#define crd_key		CRD_INI.cri_key
+#define crd_alg		CRD_INI.cri_alg
+#define crd_klen	CRD_INI.cri_klen
+
+	struct cryptodesc *crd_next;
+};
+
+/* Structure describing complete operation */
+struct cryptop {
+	struct list_head crp_next;
+	wait_queue_head_t crp_waitq;
+
+	u_int64_t	crp_sid;	/* Session ID */
+	int		crp_ilen;	/* Input data total length */
+	int		crp_olen;	/* Result total length */
+
+	int		crp_etype;	/*
+					 * Error type (zero means no error).
+					 * All error codes except EAGAIN
+					 * indicate possible data corruption (as in,
+					 * the data have been touched). On all
+					 * errors, the crp_sid may have changed
+					 * (reset to a new one), so the caller
+					 * should always check and use the new
+					 * value on future requests.
+					 */
+	int		crp_flags;
+
+#define CRYPTO_F_SKBUF		0x0001	/* Input/output are skbuf chains */
+#define CRYPTO_F_IOV		0x0002	/* Input/output are uio */
+#define CRYPTO_F_REL		0x0004	/* Must return data in same place */
+#define CRYPTO_F_BATCH		0x0008	/* Batch op if possible */
+#define CRYPTO_F_CBIMM		0x0010	/* Do callback immediately */
+#define CRYPTO_F_DONE		0x0020	/* Operation completed */
+#define CRYPTO_F_CBIFSYNC	0x0040	/* Do CBIMM if op is synchronous */
+
+	caddr_t		crp_buf;	/* Data to be processed */
+	caddr_t		crp_opaque;	/* Opaque pointer, passed along */
+	struct cryptodesc *crp_desc;	/* Linked list of processing descriptors */
+
+	int (*crp_callback)(struct cryptop *); /* Callback function */
+};
+
+#define CRYPTO_BUF_CONTIG	0x0
+#define CRYPTO_BUF_IOV		0x1
+#define CRYPTO_BUF_SKBUF		0x2
+
+#define CRYPTO_OP_DECRYPT	0x0
+#define CRYPTO_OP_ENCRYPT	0x1
+
+/*
+ * Hints passed to process methods.
+ */
+#define CRYPTO_HINT_MORE	0x1	/* more ops coming shortly */
+
+struct cryptkop {
+	struct list_head krp_next;
+	wait_queue_head_t krp_waitq;
+
+	int		krp_flags;
+#define CRYPTO_KF_DONE		0x0001	/* Operation completed */
+#define CRYPTO_KF_CBIMM		0x0002	/* Do callback immediately */
+
+	u_int		krp_op;		/* ie. CRK_MOD_EXP or other */
+	u_int		krp_status;	/* return status */
+	u_short		krp_iparams;	/* # of input parameters */
+	u_short		krp_oparams;	/* # of output parameters */
+	u_int		krp_crid;	/* desired device, etc. */
+	u_int32_t	krp_hid;
+	struct crparam	krp_param[CRK_MAXPARAM];	/* kvm */
+	int		(*krp_callback)(struct cryptkop *);
+};
+
+#include <ocf-compat.h>
+
+/*
+ * Session ids are 64 bits.  The lower 32 bits contain a "local id" which
+ * is a driver-private session identifier.  The upper 32 bits contain a
+ * "hardware id" used by the core crypto code to identify the driver and
+ * a copy of the driver's capabilities that can be used by client code to
+ * optimize operation.
+ */
+#define CRYPTO_SESID2HID(_sid)	(((_sid) >> 32) & 0x00ffffff)
+#define CRYPTO_SESID2CAPS(_sid)	(((_sid) >> 32) & 0xff000000)
+#define CRYPTO_SESID2LID(_sid)	(((u_int32_t) (_sid)) & 0xffffffff)
+
+extern	int crypto_newsession(u_int64_t *sid, struct cryptoini *cri, int hard);
+extern	int crypto_freesession(u_int64_t sid);
+#define CRYPTOCAP_F_HARDWARE	CRYPTO_FLAG_HARDWARE
+#define CRYPTOCAP_F_SOFTWARE	CRYPTO_FLAG_SOFTWARE
+#define CRYPTOCAP_F_SYNC	0x04000000	/* operates synchronously */
+extern	int32_t crypto_get_driverid(device_t dev, int flags);
+extern	int crypto_find_driver(const char *);
+extern	device_t crypto_find_device_byhid(int hid);
+extern	int crypto_getcaps(int hid);
+extern	int crypto_register(u_int32_t driverid, int alg, u_int16_t maxoplen,
+	    u_int32_t flags);
+extern	int crypto_kregister(u_int32_t, int, u_int32_t);
+extern	int crypto_unregister(u_int32_t driverid, int alg);
+extern	int crypto_unregister_all(u_int32_t driverid);
+extern	int crypto_dispatch(struct cryptop *crp);
+extern	int crypto_kdispatch(struct cryptkop *);
+#define CRYPTO_SYMQ	0x1
+#define CRYPTO_ASYMQ	0x2
+extern	int crypto_unblock(u_int32_t, int);
+extern	void crypto_done(struct cryptop *crp);
+extern	void crypto_kdone(struct cryptkop *);
+extern	int crypto_getfeat(int *);
+
+extern	void crypto_freereq(struct cryptop *crp);
+extern	struct cryptop *crypto_getreq(int num);
+
+extern  int crypto_usercrypto;      /* userland may do crypto requests */
+extern  int crypto_userasymcrypto;  /* userland may do asym crypto reqs */
+extern  int crypto_devallowsoft;    /* only use hardware crypto */
+
+/*
+ * random number support,  crypto_unregister_all will unregister
+ */
+extern int crypto_rregister(u_int32_t driverid,
+		int (*read_random)(void *arg, u_int32_t *buf, int len), void *arg);
+extern int crypto_runregister_all(u_int32_t driverid);
+
+/*
+ * Crypto-related utility routines used mainly by drivers.
+ *
+ * XXX these don't really belong here; but for now they're
+ *     kept apart from the rest of the system.
+ */
+struct uio;
+extern	void cuio_copydata(struct uio* uio, int off, int len, caddr_t cp);
+extern	void cuio_copyback(struct uio* uio, int off, int len, caddr_t cp);
+extern	struct iovec *cuio_getptr(struct uio *uio, int loc, int *off);
+
+extern	void crypto_copyback(int flags, caddr_t buf, int off, int size,
+	    caddr_t in);
+extern	void crypto_copydata(int flags, caddr_t buf, int off, int size,
+	    caddr_t out);
+extern	int crypto_apply(int flags, caddr_t buf, int off, int len,
+	    int (*f)(void *, void *, u_int), void *arg);
+
+#endif /* __KERNEL__ */
+#endif /* _CRYPTO_CRYPTO_H_ */
diff -Nur openssl-0.9.8h/crypto/engine/eng_cryptodev.c openssl-0.9.8h-ocf/crypto/engine/eng_cryptodev.c
--- openssl-0.9.8h/crypto/engine/eng_cryptodev.c	2008-07-13 15:32:53.000000000 +0200
+++ openssl-0.9.8h-ocf/crypto/engine/eng_cryptodev.c	2008-07-13 15:34:19.000000000 +0200
@@ -54,7 +54,7 @@
 #else 
  
 #include <sys/types.h>
-#include <crypto/cryptodev.h>
+#include "cryptodev.h"
 #include <sys/ioctl.h>
 #include <errno.h>
 #include <stdio.h>