[deliverable/linux.git] / drivers / staging / lustre / include / linux / libcfs / libcfs_ioctl.h

/*
 * GPL HEADER START
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 only,
 * as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License version 2 for more details (a copy is included
 * in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU General Public License
 * version 2 along with this program; If not, see
 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 * GPL HEADER END
 */
/*
 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
 * Use is subject to license terms.
 */
/*
 * This file is part of Lustre, http://www.lustre.org/
 * Lustre is a trademark of Sun Microsystems, Inc.
 *
 * libcfs/include/libcfs/libcfs_ioctl.h
 *
 * Low-level ioctl data structures. Kernel ioctl functions declared here,
 * and user space functions are in libcfsutil_ioctl.h.
 *
 */

#ifndef __LIBCFS_IOCTL_H__
#define __LIBCFS_IOCTL_H__


#define LIBCFS_IOCTL_VERSION 0x0001000a

struct libcfs_ioctl_data {
	__u32 ioc_len;
	__u32 ioc_version;

	__u64 ioc_nid;
	__u64 ioc_u64[1];

	__u32 ioc_flags;
	__u32 ioc_count;
	__u32 ioc_net;
	__u32 ioc_u32[7];

	__u32 ioc_inllen1;
	char *ioc_inlbuf1;
	__u32 ioc_inllen2;
	char *ioc_inlbuf2;

	__u32 ioc_plen1; /* buffers in userspace */
	char *ioc_pbuf1;
	__u32 ioc_plen2; /* buffers in userspace */
	char *ioc_pbuf2;

	char ioc_bulk[0];
};


struct libcfs_ioctl_hdr {
	__u32 ioc_len;
	__u32 ioc_version;
};

struct libcfs_debug_ioctl_data
{
	struct libcfs_ioctl_hdr hdr;
	unsigned int subs;
	unsigned int debug;
};

#define LIBCFS_IOC_INIT(data)			   \
do {						    \
	memset(&data, 0, sizeof(data));		 \
	data.ioc_version = LIBCFS_IOCTL_VERSION;	\
	data.ioc_len = sizeof(data);		    \
} while (0)


struct libcfs_ioctl_handler {
	struct list_head item;
	int (*handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_data *data);
};

#define DECLARE_IOCTL_HANDLER(ident, func)		      \
	struct libcfs_ioctl_handler ident = {		   \
		/* .item = */ LIST_HEAD_INIT(ident.item),   \
		/* .handle_ioctl = */ func		      \
	}


/* FIXME check conflict with lustre_lib.h */
#define LIBCFS_IOC_DEBUG_MASK	     _IOWR('f', 250, long)


/* ioctls for manipulating snapshots 30- */
#define IOC_LIBCFS_TYPE		   'e'
#define IOC_LIBCFS_MIN_NR		 30
/* libcfs ioctls */
#define IOC_LIBCFS_PANIC		   _IOWR('e', 30, long)
#define IOC_LIBCFS_CLEAR_DEBUG	     _IOWR('e', 31, long)
#define IOC_LIBCFS_MARK_DEBUG	      _IOWR('e', 32, long)
#define IOC_LIBCFS_MEMHOG		  _IOWR('e', 36, long)
#define IOC_LIBCFS_PING_TEST	       _IOWR('e', 37, long)
/* lnet ioctls */
#define IOC_LIBCFS_GET_NI		  _IOWR('e', 50, long)
#define IOC_LIBCFS_FAIL_NID		_IOWR('e', 51, long)
#define IOC_LIBCFS_ADD_ROUTE	       _IOWR('e', 52, long)
#define IOC_LIBCFS_DEL_ROUTE	       _IOWR('e', 53, long)
#define IOC_LIBCFS_GET_ROUTE	       _IOWR('e', 54, long)
#define IOC_LIBCFS_NOTIFY_ROUTER	   _IOWR('e', 55, long)
#define IOC_LIBCFS_UNCONFIGURE	     _IOWR('e', 56, long)
#define IOC_LIBCFS_PORTALS_COMPATIBILITY   _IOWR('e', 57, long)
#define IOC_LIBCFS_LNET_DIST	       _IOWR('e', 58, long)
#define IOC_LIBCFS_CONFIGURE	       _IOWR('e', 59, long)
#define IOC_LIBCFS_TESTPROTOCOMPAT	 _IOWR('e', 60, long)
#define IOC_LIBCFS_PING		    _IOWR('e', 61, long)
#define IOC_LIBCFS_DEBUG_PEER	      _IOWR('e', 62, long)
#define IOC_LIBCFS_LNETST		  _IOWR('e', 63, long)
/* lnd ioctls */
#define IOC_LIBCFS_REGISTER_MYNID	  _IOWR('e', 70, long)
#define IOC_LIBCFS_CLOSE_CONNECTION	_IOWR('e', 71, long)
#define IOC_LIBCFS_PUSH_CONNECTION	 _IOWR('e', 72, long)
#define IOC_LIBCFS_GET_CONN		_IOWR('e', 73, long)
#define IOC_LIBCFS_DEL_PEER		_IOWR('e', 74, long)
#define IOC_LIBCFS_ADD_PEER		_IOWR('e', 75, long)
#define IOC_LIBCFS_GET_PEER		_IOWR('e', 76, long)
#define IOC_LIBCFS_GET_TXDESC	      _IOWR('e', 77, long)
#define IOC_LIBCFS_ADD_INTERFACE	   _IOWR('e', 78, long)
#define IOC_LIBCFS_DEL_INTERFACE	   _IOWR('e', 79, long)
#define IOC_LIBCFS_GET_INTERFACE	   _IOWR('e', 80, long)

#define IOC_LIBCFS_MAX_NR			     80

static inline int libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
{
	int len = sizeof(*data);
	len += cfs_size_round(data->ioc_inllen1);
	len += cfs_size_round(data->ioc_inllen2);
	return len;
}

static inline int libcfs_ioctl_is_invalid(struct libcfs_ioctl_data *data)
{
	if (data->ioc_len > (1<<30)) {
		CERROR ("LIBCFS ioctl: ioc_len larger than 1<<30\n");
		return 1;
	}
	if (data->ioc_inllen1 > (1<<30)) {
		CERROR ("LIBCFS ioctl: ioc_inllen1 larger than 1<<30\n");
		return 1;
	}
	if (data->ioc_inllen2 > (1<<30)) {
		CERROR ("LIBCFS ioctl: ioc_inllen2 larger than 1<<30\n");
		return 1;
	}
	if (data->ioc_inlbuf1 && !data->ioc_inllen1) {
		CERROR ("LIBCFS ioctl: inlbuf1 pointer but 0 length\n");
		return 1;
	}
	if (data->ioc_inlbuf2 && !data->ioc_inllen2) {
		CERROR ("LIBCFS ioctl: inlbuf2 pointer but 0 length\n");
		return 1;
	}
	if (data->ioc_pbuf1 && !data->ioc_plen1) {
		CERROR ("LIBCFS ioctl: pbuf1 pointer but 0 length\n");
		return 1;
	}
	if (data->ioc_pbuf2 && !data->ioc_plen2) {
		CERROR ("LIBCFS ioctl: pbuf2 pointer but 0 length\n");
		return 1;
	}
	if (data->ioc_plen1 && !data->ioc_pbuf1) {
		CERROR ("LIBCFS ioctl: plen1 nonzero but no pbuf1 pointer\n");
		return 1;
	}
	if (data->ioc_plen2 && !data->ioc_pbuf2) {
		CERROR ("LIBCFS ioctl: plen2 nonzero but no pbuf2 pointer\n");
		return 1;
	}
	if ((__u32)libcfs_ioctl_packlen(data) != data->ioc_len ) {
		CERROR ("LIBCFS ioctl: packlen != ioc_len\n");
		return 1;
	}
	if (data->ioc_inllen1 &&
	    data->ioc_bulk[data->ioc_inllen1 - 1] != '\0') {
		CERROR ("LIBCFS ioctl: inlbuf1 not 0 terminated\n");
		return 1;
	}
	if (data->ioc_inllen2 &&
	    data->ioc_bulk[cfs_size_round(data->ioc_inllen1) +
			   data->ioc_inllen2 - 1] != '\0') {
		CERROR ("LIBCFS ioctl: inlbuf2 not 0 terminated\n");
		return 1;
	}
	return 0;
}


extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
extern int libcfs_ioctl_getdata(char *buf, char *end, void *arg);
extern int libcfs_ioctl_popdata(void *arg, void *buf, int size);


#endif /* __LIBCFS_IOCTL_H__ */
Commit	Line	Data
d7e09d03 PT	1	/*
	2	* GPL HEADER START
	3	*
	4	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	5	*
	6	* This program is free software; you can redistribute it and/or modify
	7	* it under the terms of the GNU General Public License version 2 only,
	8	* as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License version 2 for more details (a copy is included
	14	* in the LICENSE file that accompanied this code).
	15	*
	16	* You should have received a copy of the GNU General Public License
	17	* version 2 along with this program; If not, see
	18	* http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
	19	*
	20	* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
	21	* CA 95054 USA or visit www.sun.com if you need additional information or
	22	* have any questions.
	23	*
	24	* GPL HEADER END
	25	*/
	26	/*
	27	* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
	28	* Use is subject to license terms.
	29	*/
	30	/*
	31	* This file is part of Lustre, http://www.lustre.org/
	32	* Lustre is a trademark of Sun Microsystems, Inc.
	33	*
	34	* libcfs/include/libcfs/libcfs_ioctl.h
	35	*
	36	* Low-level ioctl data structures. Kernel ioctl functions declared here,
	37	* and user space functions are in libcfsutil_ioctl.h.
	38	*
	39	*/
	40
	41	#ifndef __LIBCFS_IOCTL_H__
	42	#define __LIBCFS_IOCTL_H__
	43
	44
	45	#define LIBCFS_IOCTL_VERSION 0x0001000a
	46
	47	struct libcfs_ioctl_data {
	48	__u32 ioc_len;
	49	__u32 ioc_version;
	50
	51	__u64 ioc_nid;
	52	__u64 ioc_u64[1];
	53
	54	__u32 ioc_flags;
	55	__u32 ioc_count;
	56	__u32 ioc_net;
	57	__u32 ioc_u32[7];
	58
	59	__u32 ioc_inllen1;
	60	char *ioc_inlbuf1;
	61	__u32 ioc_inllen2;
	62	char *ioc_inlbuf2;
	63
	64	__u32 ioc_plen1; /* buffers in userspace */
65	char *ioc_pbuf1;
66	__u32 ioc_plen2; /* buffers in userspace */
67	char *ioc_pbuf2;
68
69	char ioc_bulk[0];
70	};
71
72
73	struct libcfs_ioctl_hdr {
74	__u32 ioc_len;
75	__u32 ioc_version;
76	};
77
78	struct libcfs_debug_ioctl_data
79	{
80	struct libcfs_ioctl_hdr hdr;
81	unsigned int subs;
82	unsigned int debug;
83	};
84
85	#define LIBCFS_IOC_INIT(data) \
86	do { \
87	memset(&data, 0, sizeof(data)); \
88	data.ioc_version = LIBCFS_IOCTL_VERSION; \
89	data.ioc_len = sizeof(data); \
90	} while (0)
91
92
93	struct libcfs_ioctl_handler {
94	struct list_head item;
95	int (handle_ioctl)(unsigned int cmd, struct libcfs_ioctl_data data);
96	};
97
98	#define DECLARE_IOCTL_HANDLER(ident, func) \
99	struct libcfs_ioctl_handler ident = { \
100	/* .item = */ LIST_HEAD_INIT(ident.item), \
101	/* .handle_ioctl = */ func \
102	}
103
104
105	/* FIXME check conflict with lustre_lib.h */
106	#define LIBCFS_IOC_DEBUG_MASK _IOWR('f', 250, long)
107
108
109	/* ioctls for manipulating snapshots 30- */
110	#define IOC_LIBCFS_TYPE 'e'
111	#define IOC_LIBCFS_MIN_NR 30
112	/* libcfs ioctls */
6be96847 PT	113	#define IOC_LIBCFS_PANIC _IOWR('e', 30, long)
	114	#define IOC_LIBCFS_CLEAR_DEBUG _IOWR('e', 31, long)
	115	#define IOC_LIBCFS_MARK_DEBUG _IOWR('e', 32, long)
6be96847 PT	116	#define IOC_LIBCFS_MEMHOG _IOWR('e', 36, long)
6be96847 PT	117	#define IOC_LIBCFS_PING_TEST _IOWR('e', 37, long)
d7e09d03	118	/* lnet ioctls */
6be96847 PT	119	#define IOC_LIBCFS_GET_NI _IOWR('e', 50, long)
	120	#define IOC_LIBCFS_FAIL_NID _IOWR('e', 51, long)
	121	#define IOC_LIBCFS_ADD_ROUTE _IOWR('e', 52, long)
	122	#define IOC_LIBCFS_DEL_ROUTE _IOWR('e', 53, long)
	123	#define IOC_LIBCFS_GET_ROUTE _IOWR('e', 54, long)
	124	#define IOC_LIBCFS_NOTIFY_ROUTER _IOWR('e', 55, long)
	125	#define IOC_LIBCFS_UNCONFIGURE _IOWR('e', 56, long)
	126	#define IOC_LIBCFS_PORTALS_COMPATIBILITY _IOWR('e', 57, long)
	127	#define IOC_LIBCFS_LNET_DIST _IOWR('e', 58, long)
	128	#define IOC_LIBCFS_CONFIGURE _IOWR('e', 59, long)
	129	#define IOC_LIBCFS_TESTPROTOCOMPAT _IOWR('e', 60, long)
	130	#define IOC_LIBCFS_PING _IOWR('e', 61, long)
	131	#define IOC_LIBCFS_DEBUG_PEER _IOWR('e', 62, long)
	132	#define IOC_LIBCFS_LNETST _IOWR('e', 63, long)
d7e09d03	133	/* lnd ioctls */
6be96847 PT	134	#define IOC_LIBCFS_REGISTER_MYNID _IOWR('e', 70, long)
	135	#define IOC_LIBCFS_CLOSE_CONNECTION _IOWR('e', 71, long)
	136	#define IOC_LIBCFS_PUSH_CONNECTION _IOWR('e', 72, long)
	137	#define IOC_LIBCFS_GET_CONN _IOWR('e', 73, long)
	138	#define IOC_LIBCFS_DEL_PEER _IOWR('e', 74, long)
	139	#define IOC_LIBCFS_ADD_PEER _IOWR('e', 75, long)
	140	#define IOC_LIBCFS_GET_PEER _IOWR('e', 76, long)
	141	#define IOC_LIBCFS_GET_TXDESC _IOWR('e', 77, long)
	142	#define IOC_LIBCFS_ADD_INTERFACE _IOWR('e', 78, long)
	143	#define IOC_LIBCFS_DEL_INTERFACE _IOWR('e', 79, long)
	144	#define IOC_LIBCFS_GET_INTERFACE _IOWR('e', 80, long)
d7e09d03 PT	145
	146	#define IOC_LIBCFS_MAX_NR 80
	147
	148	static inline int libcfs_ioctl_packlen(struct libcfs_ioctl_data *data)
	149	{
	150	int len = sizeof(*data);
	151	len += cfs_size_round(data->ioc_inllen1);
	152	len += cfs_size_round(data->ioc_inllen2);
	153	return len;
	154	}
	155
	156	static inline int libcfs_ioctl_is_invalid(struct libcfs_ioctl_data *data)
	157	{
	158	if (data->ioc_len > (1<<30)) {
	159	CERROR ("LIBCFS ioctl: ioc_len larger than 1<<30\n");
	160	return 1;
	161	}
	162	if (data->ioc_inllen1 > (1<<30)) {
	163	CERROR ("LIBCFS ioctl: ioc_inllen1 larger than 1<<30\n");
	164	return 1;
	165	}
	166	if (data->ioc_inllen2 > (1<<30)) {
	167	CERROR ("LIBCFS ioctl: ioc_inllen2 larger than 1<<30\n");
	168	return 1;
	169	}
	170	if (data->ioc_inlbuf1 && !data->ioc_inllen1) {
	171	CERROR ("LIBCFS ioctl: inlbuf1 pointer but 0 length\n");
	172	return 1;
	173	}
	174	if (data->ioc_inlbuf2 && !data->ioc_inllen2) {
	175	CERROR ("LIBCFS ioctl: inlbuf2 pointer but 0 length\n");
	176	return 1;
	177	}
	178	if (data->ioc_pbuf1 && !data->ioc_plen1) {
	179	CERROR ("LIBCFS ioctl: pbuf1 pointer but 0 length\n");
	180	return 1;
	181	}
	182	if (data->ioc_pbuf2 && !data->ioc_plen2) {
	183	CERROR ("LIBCFS ioctl: pbuf2 pointer but 0 length\n");
	184	return 1;
	185	}
	186	if (data->ioc_plen1 && !data->ioc_pbuf1) {
	187	CERROR ("LIBCFS ioctl: plen1 nonzero but no pbuf1 pointer\n");
	188	return 1;
	189	}
	190	if (data->ioc_plen2 && !data->ioc_pbuf2) {
	191	CERROR ("LIBCFS ioctl: plen2 nonzero but no pbuf2 pointer\n");
	192	return 1;
	193	}
	194	if ((__u32)libcfs_ioctl_packlen(data) != data->ioc_len ) {
	195	CERROR ("LIBCFS ioctl: packlen != ioc_len\n");
	196	return 1;
	197	}
	198	if (data->ioc_inllen1 &&
	199	data->ioc_bulk[data->ioc_inllen1 - 1] != '\0') {
	200	CERROR ("LIBCFS ioctl: inlbuf1 not 0 terminated\n");
	201	return 1;
	202	}
	203	if (data->ioc_inllen2 &&
	204	data->ioc_bulk[cfs_size_round(data->ioc_inllen1) +
	205	data->ioc_inllen2 - 1] != '\0') {
	206	CERROR ("LIBCFS ioctl: inlbuf2 not 0 terminated\n");
	207	return 1;
	208	}
209	return 0;
210	}
211
212
213	extern int libcfs_register_ioctl(struct libcfs_ioctl_handler *hand);
214	extern int libcfs_deregister_ioctl(struct libcfs_ioctl_handler *hand);
215	extern int libcfs_ioctl_getdata(char buf, char end, void *arg);
216	extern int libcfs_ioctl_popdata(void arg, void buf, int size);
217
218
219	#endif /* __LIBCFS_IOCTL_H__ */