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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License (the "License").
      6  * You may not use this file except in compliance with the License.
      7  *
      8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
      9  * or http://www.opensolaris.org/os/licensing.
     10  * See the License for the specific language governing permissions
     11  * and limitations under the License.
     12  *
     13  * When distributing Covered Code, include this CDDL HEADER in each
     14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     15  * If applicable, add the following below this CDDL HEADER, with the
     16  * fields enclosed by brackets "[]" replaced with your own identifying
     17  * information: Portions Copyright [yyyy] [name of copyright owner]
     18  *
     19  * CDDL HEADER END
     20  */
     21 /*
     22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 #ifndef	_SYS_ZFS_IOCTL_H
     27 #define	_SYS_ZFS_IOCTL_H
     28 
     29 #pragma ident	"@(#)zfs_ioctl.h	1.18	07/11/16 SMI"
     30 
     31 #include <sys/cred.h>
     32 #include <sys/dmu.h>
     33 #include <sys/zio.h>
     34 #include <sys/dsl_deleg.h>
     35 
     36 #ifdef _KERNEL
     37 #include <sys/nvpair.h>
     38 #endif	/* _KERNEL */
     39 
     40 #ifdef	__cplusplus
     41 extern "C" {
     42 #endif
     43 
     44 /*
     45  * Property values for snapdir
     46  */
     47 #define	ZFS_SNAPDIR_HIDDEN		0
     48 #define	ZFS_SNAPDIR_VISIBLE		1
     49 
     50 #define	DMU_BACKUP_STREAM_VERSION (1ULL)
     51 #define	DMU_BACKUP_HEADER_VERSION (2ULL)
     52 #define	DMU_BACKUP_MAGIC 0x2F5bacbacULL
     53 
     54 #define	DRR_FLAG_CLONE (1<<0)
     55 
     56 /*
     57  * zfs ioctl command structure
     58  */
     59 typedef struct dmu_replay_record {
     60 	enum {
     61 		DRR_BEGIN, DRR_OBJECT, DRR_FREEOBJECTS,
     62 		DRR_WRITE, DRR_FREE, DRR_END,
     63 	} drr_type;
     64 	uint32_t drr_payloadlen;
     65 	union {
     66 		struct drr_begin {
     67 			uint64_t drr_magic;
     68 			uint64_t drr_version;
     69 			uint64_t drr_creation_time;
     70 			dmu_objset_type_t drr_type;
     71 			uint32_t drr_flags;
     72 			uint64_t drr_toguid;
     73 			uint64_t drr_fromguid;
     74 			char drr_toname[MAXNAMELEN];
     75 		} drr_begin;
     76 		struct drr_end {
     77 			zio_cksum_t drr_checksum;
     78 		} drr_end;
     79 		struct drr_object {
     80 			uint64_t drr_object;
     81 			dmu_object_type_t drr_type;
     82 			dmu_object_type_t drr_bonustype;
     83 			uint32_t drr_blksz;
     84 			uint32_t drr_bonuslen;
     85 			uint8_t drr_checksum;
     86 			uint8_t drr_compress;
     87 			uint8_t drr_pad[6];
     88 			/* bonus content follows */
     89 		} drr_object;
     90 		struct drr_freeobjects {
     91 			uint64_t drr_firstobj;
     92 			uint64_t drr_numobjs;
     93 		} drr_freeobjects;
     94 		struct drr_write {
     95 			uint64_t drr_object;
     96 			dmu_object_type_t drr_type;
     97 			uint32_t drr_pad;
     98 			uint64_t drr_offset;
     99 			uint64_t drr_length;
    100 			/* content follows */
    101 		} drr_write;
    102 		struct drr_free {
    103 			uint64_t drr_object;
    104 			uint64_t drr_offset;
    105 			uint64_t drr_length;
    106 		} drr_free;
    107 	} drr_u;
    108 } dmu_replay_record_t;
    109 
    110 typedef struct zinject_record {
    111 	uint64_t	zi_objset;
    112 	uint64_t	zi_object;
    113 	uint64_t	zi_start;
    114 	uint64_t	zi_end;
    115 	uint64_t	zi_guid;
    116 	uint32_t	zi_level;
    117 	uint32_t	zi_error;
    118 	uint64_t	zi_type;
    119 	uint32_t	zi_freq;
    120 	uint32_t	zi_pad;	/* pad out to 64 bit alignment */
    121 } zinject_record_t;
    122 
    123 #define	ZINJECT_NULL		0x1
    124 #define	ZINJECT_FLUSH_ARC	0x2
    125 #define	ZINJECT_UNLOAD_SPA	0x4
    126 
    127 typedef struct zfs_share {
    128 	uint64_t	z_exportdata;
    129 	uint64_t	z_sharedata;
    130 	uint64_t	z_sharetype;	/* 0 = share, 1 = unshare */
    131 	uint64_t	z_sharemax;  /* max length of share string */
    132 } zfs_share_t;
    133 
    134 /*
    135  * ZFS file systems may behave the usual, POSIX-compliant way, where
    136  * name lookups are case-sensitive.  They may also be set up so that
    137  * all the name lookups are case-insensitive, or so that only some
    138  * lookups, the ones that set an FIGNORECASE flag, are case-insensitive.
    139  */
    140 typedef enum zfs_case {
    141 	ZFS_CASE_SENSITIVE,
    142 	ZFS_CASE_INSENSITIVE,
    143 	ZFS_CASE_MIXED
    144 } zfs_case_t;
    145 
    146 typedef struct zfs_cmd {
    147 	char		zc_name[MAXPATHLEN];
    148 	char		zc_value[MAXPATHLEN * 2];
    149 	char		zc_string[MAXNAMELEN];
    150 	uint64_t	zc_guid;
    151 	uint64_t	zc_nvlist_conf;		/* really (char *) */
    152 	uint64_t	zc_nvlist_conf_size;
    153 	uint64_t	zc_nvlist_src;		/* really (char *) */
    154 	uint64_t	zc_nvlist_src_size;
    155 	uint64_t	zc_nvlist_dst;		/* really (char *) */
    156 	uint64_t	zc_nvlist_dst_size;
    157 	uint64_t	zc_cookie;
    158 	uint64_t	zc_objset_type;
    159 	uint64_t	zc_perm_action;
    160 	uint64_t 	zc_history;		/* really (char *) */
    161 	uint64_t 	zc_history_len;
    162 	uint64_t	zc_history_offset;
    163 	uint64_t	zc_obj;
    164 	zfs_share_t	zc_share;
    165 	dmu_objset_stats_t zc_objset_stats;
    166 	struct drr_begin zc_begin_record;
    167 	zinject_record_t zc_inject_record;
    168 } zfs_cmd_t;
    169 
    170 #define	ZVOL_MAX_MINOR	(1 << 16)
    171 #define	ZFS_MIN_MINOR	(ZVOL_MAX_MINOR + 1)
    172 
    173 #ifdef _KERNEL
    174 
    175 typedef struct zfs_creat {
    176 	nvlist_t	*zct_zplprops;
    177 	nvlist_t	*zct_props;
    178 } zfs_creat_t;
    179 
    180 extern dev_info_t *zfs_dip;
    181 
    182 extern int zfs_secpolicy_snapshot_perms(const char *name, cred_t *cr);
    183 extern int zfs_secpolicy_rename_perms(const char *from,
    184     const char *to, cred_t *cr);
    185 extern int zfs_secpolicy_destroy_perms(const char *name, cred_t *cr);
    186 extern int zfs_busy(void);
    187 extern int zfs_unmount_snap(char *, void *);
    188 
    189 #endif	/* _KERNEL */
    190 
    191 #ifdef	__cplusplus
    192 }
    193 #endif
    194 
    195 #endif	/* _SYS_ZFS_IOCTL_H */
    196