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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 (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
     23  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
     24  */
     25 
     26 #ifndef	_LIBNVPAIR_H
     27 #define	_LIBNVPAIR_H
     28 
     29 #include <sys/nvpair.h>
     30 #include <stdlib.h>
     31 #include <stdio.h>
     32 #include <regex.h>
     33 
     34 #ifdef	__cplusplus
     35 extern "C" {
     36 #endif
     37 
     38 /*
     39  * All interfaces described in this file are private to Solaris, and
     40  * are subject to change at any time and without notice.  The public
     41  * nvlist/nvpair interfaces, as documented in manpage sections 3NVPAIR,
     42  * are all imported from <sys/nvpair.h> included above.
     43  */
     44 
     45 extern int nvpair_value_match(nvpair_t *, int, char *, char **);
     46 extern int nvpair_value_match_regex(nvpair_t *, int, char *, regex_t *,
     47     char **);
     48 
     49 extern void nvlist_print(FILE *, nvlist_t *);
     50 extern int nvlist_print_json(FILE *, nvlist_t *);
     51 extern void dump_nvlist(nvlist_t *, int);
     52 
     53 /*
     54  * Private nvlist printing interface that allows the caller some control
     55  * over output rendering (as opposed to nvlist_print and dump_nvlist).
     56  *
     57  * Obtain an opaque nvlist_prtctl_t cookie using nvlist_prtctl_alloc
     58  * (NULL on failure);  on return the cookie is set up for default formatting
     59  * and rendering.  Quote the cookie in subsequent customisation functions and
     60  * then pass the cookie to nvlist_prt to render the nvlist.  Finally,
     61  * use nvlist_prtctl_free to release the cookie.
     62  *
     63  * For all nvlist_lookup_xxx and nvlist_lookup_xxx_array functions
     64  * we have a corresponding brace of functions that appoint replacement
     65  * rendering functions:
     66  *
     67  *	extern void nvlist_prtctl_xxx(nvlist_prtctl_t,
     68  *	    void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
     69  *	    xxxtype value))
     70  *
     71  *	and
     72  *
     73  *	extern void nvlist_prtctl_xxx_array(nvlist_prtctl_t,
     74  *	    void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
     75  *	    xxxtype value, uint_t count))
     76  *
     77  * where xxxtype is the C datatype corresponding to xxx, eg int8_t for "int8"
     78  * and char * for "string".  The function that is appointed to render the
     79  * specified datatype receives as arguments the cookie, the nvlist
     80  * member name, the value of that member (or a pointer for array function),
     81  * and (for array rendering functions) a count of the number of elements.
     82  */
     83 
     84 typedef struct nvlist_prtctl *nvlist_prtctl_t;	/* opaque */
     85 
     86 enum nvlist_indent_mode {
     87 	NVLIST_INDENT_ABS,	/* Absolute indentation */
     88 	NVLIST_INDENT_TABBED	/* Indent with tabstops */
     89 };
     90 
     91 extern nvlist_prtctl_t nvlist_prtctl_alloc(void);
     92 extern void nvlist_prtctl_free(nvlist_prtctl_t);
     93 extern void nvlist_prt(nvlist_t *, nvlist_prtctl_t);
     94 
     95 /* Output stream */
     96 extern void nvlist_prtctl_setdest(nvlist_prtctl_t, FILE *);
     97 extern FILE *nvlist_prtctl_getdest(nvlist_prtctl_t);
     98 
     99 /* Indentation mode, start indent, indent increment; default tabbed/0/1 */
    100 extern void nvlist_prtctl_setindent(nvlist_prtctl_t, enum nvlist_indent_mode,
    101     int, int);
    102 extern void nvlist_prtctl_doindent(nvlist_prtctl_t, int);
    103 
    104 enum nvlist_prtctl_fmt {
    105 	NVLIST_FMT_MEMBER_NAME,		/* name fmt; default "%s = " */
    106 	NVLIST_FMT_MEMBER_POSTAMBLE,	/* after nvlist member; default "\n" */
    107 	NVLIST_FMT_BTWN_ARRAY		/* between array members; default " " */
    108 };
    109 
    110 extern void nvlist_prtctl_setfmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt,
    111     const char *);
    112 extern void nvlist_prtctl_dofmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt, ...);
    113 
    114 /*
    115  * Function prototypes for interfaces that appoint a new rendering function
    116  * for single-valued nvlist members.
    117  *
    118  * A replacement function receives arguments as follows:
    119  *
    120  *	nvlist_prtctl_t	Print control structure; do not change preferences
    121  *			for this object from a print callback function.
    122  *
    123  *	void *		The function-private cookie argument registered
    124  *			when the replacement function was appointed.
    125  *
    126  *	nvlist_t *	The full nvlist that is being processed.  The
    127  *			rendering function is called to render a single
    128  *			member (name and value passed as below) but it may
    129  *			want to reference or incorporate other aspects of
    130  *			the full nvlist.
    131  *
    132  *	const char *	Member name to render
    133  *
    134  *	valtype		Value of the member to render
    135  *
    136  * The function must return non-zero if it has rendered output for this
    137  * member, or 0 if it wants to default to standard rendering for this
    138  * one member.
    139  */
    140 
    141 #define	NVLIST_PRINTCTL_SVDECL(funcname, valtype) \
    142     extern void funcname(nvlist_prtctl_t, \
    143     int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, valtype), \
    144     void *)
    145 
    146 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean, int);
    147 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean_value, boolean_t);
    148 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_byte, uchar_t);
    149 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int8, int8_t);
    150 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint8, uint8_t);
    151 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int16, int16_t);
    152 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint16, uint16_t);
    153 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int32, int32_t);
    154 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint32, uint32_t);
    155 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int64, int64_t);
    156 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint64, uint64_t);
    157 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_double, double);
    158 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_string, char *);
    159 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_hrtime, hrtime_t);
    160 NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_nvlist, nvlist_t *);
    161 
    162 #undef	NVLIST_PRINTCTL_SVDECL	/* was just for "clarity" above */
    163 
    164 /*
    165  * Function prototypes for interfaces that appoint a new rendering function
    166  * for array-valued nvlist members.
    167  *
    168  * One additional argument is taken: uint_t for the number of array elements
    169  *
    170  * Return values as above.
    171  */
    172 #define	NVLIST_PRINTCTL_AVDECL(funcname, vtype) \
    173     extern void funcname(nvlist_prtctl_t, \
    174     int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, vtype, uint_t), \
    175     void *)
    176 
    177 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_boolean_array, boolean_t *);
    178 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_byte_array, uchar_t *);
    179 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int8_array, int8_t *);
    180 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint8_array, uint8_t *);
    181 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int16_array, int16_t *);
    182 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint16_array, uint16_t *);
    183 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int32_array, int32_t *);
    184 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint32_array, uint32_t *);
    185 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int64_array, int64_t *);
    186 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint64_array, uint64_t *);
    187 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_string_array, char **);
    188 NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_nvlist_array, nvlist_t **);
    189 
    190 #undef	NVLIST_PRINTCTL_AVDECL	/* was just for "clarity" above */
    191 
    192 #ifdef	__cplusplus
    193 }
    194 #endif
    195 
    196 #endif	/* _LIBNVPAIR_H */
    197