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After addressing coverity complaints involving `nvpair_name()`, the compiler started complaining about dropping const. This lead to a rabbit hole where not only `nvpair_name()` needed to be constified, but also `nvpair_value_string()`, `fnvpair_value_string()` and a few other static functions, plus variable pointers throughout the code. The result became a fairly big change, so it has been split out into its own patch. Reviewed-by: Tino Reichardt <milky-zfs@mcmilk.de> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Richard Yao <richard.yao@alumni.stonybrook.edu> Closes #14612
199 lines
7.5 KiB
C
199 lines
7.5 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or https://opensource.org/licenses/CDDL-1.0.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2000, 2010, Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2013, Joyent, Inc. All rights reserved.
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*/
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#ifndef _LIBNVPAIR_H
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#define _LIBNVPAIR_H extern __attribute__((visibility("default")))
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#include <sys/nvpair.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <regex.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* All interfaces described in this file are private to Solaris, and
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* are subject to change at any time and without notice. The public
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* nvlist/nvpair interfaces, as documented in manpage sections 3NVPAIR,
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* are all imported from <sys/nvpair.h> included above.
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*/
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_LIBNVPAIR_H int nvpair_value_match(nvpair_t *, int, const char *,
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const char **);
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_LIBNVPAIR_H int nvpair_value_match_regex(nvpair_t *, int, const char *,
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regex_t *, const char **);
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_LIBNVPAIR_H void nvlist_print(FILE *, nvlist_t *);
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_LIBNVPAIR_H int nvlist_print_json(FILE *, nvlist_t *);
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_LIBNVPAIR_H void dump_nvlist(nvlist_t *, int);
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/*
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* Private nvlist printing interface that allows the caller some control
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* over output rendering (as opposed to nvlist_print and dump_nvlist).
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*
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* Obtain an opaque nvlist_prtctl_t cookie using nvlist_prtctl_alloc
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* (NULL on failure); on return the cookie is set up for default formatting
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* and rendering. Quote the cookie in subsequent customisation functions and
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* then pass the cookie to nvlist_prt to render the nvlist. Finally,
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* use nvlist_prtctl_free to release the cookie.
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*
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* For all nvlist_lookup_xxx and nvlist_lookup_xxx_array functions
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* we have a corresponding brace of functions that appoint replacement
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* rendering functions:
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*
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* extern void nvlist_prtctl_xxx(nvlist_prtctl_t,
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* void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
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* xxxtype value))
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*
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* and
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*
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* extern void nvlist_prtctl_xxx_array(nvlist_prtctl_t,
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* void (*)(nvlist_prtctl_t ctl, void *private, const char *name,
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* xxxtype value, uint_t count))
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*
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* where xxxtype is the C datatype corresponding to xxx, eg int8_t for "int8"
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* and char * for "string". The function that is appointed to render the
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* specified datatype receives as arguments the cookie, the nvlist
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* member name, the value of that member (or a pointer for array function),
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* and (for array rendering functions) a count of the number of elements.
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*/
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typedef struct nvlist_prtctl *nvlist_prtctl_t; /* opaque */
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enum nvlist_indent_mode {
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NVLIST_INDENT_ABS, /* Absolute indentation */
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NVLIST_INDENT_TABBED /* Indent with tabstops */
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};
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_LIBNVPAIR_H nvlist_prtctl_t nvlist_prtctl_alloc(void);
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_LIBNVPAIR_H void nvlist_prtctl_free(nvlist_prtctl_t);
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_LIBNVPAIR_H void nvlist_prt(nvlist_t *, nvlist_prtctl_t);
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/* Output stream */
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_LIBNVPAIR_H void nvlist_prtctl_setdest(nvlist_prtctl_t, FILE *);
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_LIBNVPAIR_H FILE *nvlist_prtctl_getdest(nvlist_prtctl_t);
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/* Indentation mode, start indent, indent increment; default tabbed/0/1 */
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_LIBNVPAIR_H void nvlist_prtctl_setindent(nvlist_prtctl_t,
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enum nvlist_indent_mode, int, int);
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_LIBNVPAIR_H void nvlist_prtctl_doindent(nvlist_prtctl_t, int);
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enum nvlist_prtctl_fmt {
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NVLIST_FMT_MEMBER_NAME, /* name fmt; default "%s = " */
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NVLIST_FMT_MEMBER_POSTAMBLE, /* after nvlist member; default "\n" */
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NVLIST_FMT_BTWN_ARRAY /* between array members; default " " */
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};
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_LIBNVPAIR_H void nvlist_prtctl_setfmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt,
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const char *);
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_LIBNVPAIR_H void nvlist_prtctl_dofmt(nvlist_prtctl_t, enum nvlist_prtctl_fmt,
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...);
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/*
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* Function prototypes for interfaces that appoint a new rendering function
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* for single-valued nvlist members.
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*
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* A replacement function receives arguments as follows:
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*
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* nvlist_prtctl_t Print control structure; do not change preferences
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* for this object from a print callback function.
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*
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* void * The function-private cookie argument registered
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* when the replacement function was appointed.
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*
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* nvlist_t * The full nvlist that is being processed. The
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* rendering function is called to render a single
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* member (name and value passed as below) but it may
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* want to reference or incorporate other aspects of
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* the full nvlist.
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*
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* const char * Member name to render
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*
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* valtype Value of the member to render
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*
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* The function must return non-zero if it has rendered output for this
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* member, or 0 if it wants to default to standard rendering for this
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* one member.
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*/
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#define NVLIST_PRINTCTL_SVDECL(funcname, valtype) \
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_LIBNVPAIR_H void funcname(nvlist_prtctl_t, \
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int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, valtype), \
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void *)
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean, int);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_boolean_value, boolean_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_byte, uchar_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int8, int8_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint8, uint8_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int16, int16_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint16, uint16_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int32, int32_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint32, uint32_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_int64, int64_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_uint64, uint64_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_double, double);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_string, const char *);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_hrtime, hrtime_t);
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NVLIST_PRINTCTL_SVDECL(nvlist_prtctlop_nvlist, nvlist_t *);
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#undef NVLIST_PRINTCTL_SVDECL /* was just for "clarity" above */
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/*
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* Function prototypes for interfaces that appoint a new rendering function
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* for array-valued nvlist members.
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*
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* One additional argument is taken: uint_t for the number of array elements
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*
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* Return values as above.
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*/
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#define NVLIST_PRINTCTL_AVDECL(funcname, vtype) \
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_LIBNVPAIR_H void funcname(nvlist_prtctl_t, \
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int (*)(nvlist_prtctl_t, void *, nvlist_t *, const char *, vtype, uint_t), \
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void *)
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_boolean_array, boolean_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_byte_array, uchar_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int8_array, int8_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint8_array, uint8_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int16_array, int16_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint16_array, uint16_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int32_array, int32_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint32_array, uint32_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_int64_array, int64_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_uint64_array, uint64_t *);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_string_array, const char **);
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NVLIST_PRINTCTL_AVDECL(nvlist_prtctlop_nvlist_array, nvlist_t **);
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#undef NVLIST_PRINTCTL_AVDECL /* was just for "clarity" above */
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#ifdef __cplusplus
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}
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#endif
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#endif /* _LIBNVPAIR_H */
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