Restore <nsswitch.h> which is BSD API, not private.
Also make nsdispatch non-hidden. Firefox uses it.
Bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1030899
Change-Id: Iaccc1ec813d196ec91ac475fcc4ae9dca756861d
diff --git a/libc/dns/include/nsswitch.h b/libc/dns/include/nsswitch.h
deleted file mode 100644
index e03844b..0000000
--- a/libc/dns/include/nsswitch.h
+++ /dev/null
@@ -1,237 +0,0 @@
-/* $NetBSD: nsswitch.h,v 1.18 2005/11/29 03:12:58 christos Exp $ */
-
-/*-
- * Copyright (c) 1997, 1998, 1999, 2004 The NetBSD Foundation, Inc.
- * All rights reserved.
- *
- * This code is derived from software contributed to The NetBSD Foundation
- * by Luke Mewburn.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the NetBSD
- * Foundation, Inc. and its contributors.
- * 4. Neither the name of The NetBSD Foundation nor the names of its
- * contributors may be used to endorse or promote products derived
- * from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
- * ``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 FOUNDATION OR CONTRIBUTORS
- * 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.
- */
-
-#ifndef _NSSWITCH_H
-#define _NSSWITCH_H 1
-
-#include <sys/types.h>
-#include <stdarg.h>
-
-#define NSS_MODULE_INTERFACE_VERSION 0
-
-#ifndef _PATH_NS_CONF
-#define _PATH_NS_CONF "/etc/nsswitch.conf"
-#endif
-
-#define NS_CONTINUE 0
-#define NS_RETURN 1
-
-/*
- * Layout of:
- * uint32_t ns_src.flags
- */
- /* nsswitch.conf status codes and nsdispatch(3) return values */
-#define NS_SUCCESS (1<<0) /* entry was found */
-#define NS_UNAVAIL (1<<1) /* source not responding, or corrupt */
-#define NS_NOTFOUND (1<<2) /* source responded 'no such entry' */
-#define NS_TRYAGAIN (1<<3) /* source busy, may respond to retrys */
-#define NS_STATUSMASK 0x000000ff /* bitmask to get the status flags */
-
- /* internal nsdispatch(3) flags; not settable in nsswitch.conf(5) */
-#define NS_FORCEALL (1<<8) /* force all methods to be invoked; */
-
-/*
- * Currently implemented sources.
- */
-#define NSSRC_FILES "files" /* local files */
-#define NSSRC_DNS "dns" /* DNS; IN for hosts, HS for others */
-#define NSSRC_NIS "nis" /* YP/NIS */
-#define NSSRC_COMPAT "compat" /* passwd,group in YP compat mode */
-
-/*
- * Currently implemented databases.
- */
-#define NSDB_HOSTS "hosts"
-#define NSDB_GROUP "group"
-#define NSDB_GROUP_COMPAT "group_compat"
-#define NSDB_NETGROUP "netgroup"
-#define NSDB_NETWORKS "networks"
-#define NSDB_PASSWD "passwd"
-#define NSDB_PASSWD_COMPAT "passwd_compat"
-#define NSDB_SHELLS "shells"
-
-/*
- * Suggested databases to implement.
- */
-#define NSDB_ALIASES "aliases"
-#define NSDB_AUTH "auth"
-#define NSDB_AUTOMOUNT "automount"
-#define NSDB_BOOTPARAMS "bootparams"
-#define NSDB_ETHERS "ethers"
-#define NSDB_EXPORTS "exports"
-#define NSDB_NETMASKS "netmasks"
-#define NSDB_PHONES "phones"
-#define NSDB_PRINTCAP "printcap"
-#define NSDB_PROTOCOLS "protocols"
-#define NSDB_REMOTE "remote"
-#define NSDB_RPC "rpc"
-#define NSDB_SENDMAILVARS "sendmailvars"
-#define NSDB_SERVICES "services"
-#define NSDB_TERMCAP "termcap"
-#define NSDB_TTYS "ttys"
-
-/*
- * ns_dtab `callback' function signature.
- */
-typedef int (*nss_method)(void *, void *, va_list);
-
-/*
- * ns_dtab - `nsswitch dispatch table'
- * Contains an entry for each source and the appropriate function to call.
- */
-typedef struct {
- const char *src;
- nss_method callback;
- void *cb_data;
-} ns_dtab;
-
-/*
- * Macros to help build an ns_dtab[]
- */
-#define NS_FILES_CB(F,C) { NSSRC_FILES, F, __UNCONST(C) },
-#define NS_COMPAT_CB(F,C) { NSSRC_COMPAT, F, __UNCONST(C) },
-
-#ifdef HESIOD
-# define NS_DNS_CB(F,C) { NSSRC_DNS, F, __UNCONST(C) },
-#else
-# define NS_DNS_CB(F,C)
-#endif
-
-#ifdef YP
-# define NS_NIS_CB(F,C) { NSSRC_NIS, F, __UNCONST(C) },
-#else
-# define NS_NIS_CB(F,C)
-#endif
-
-/*
- * ns_src - `nsswitch source'
- * Used by the nsparser routines to store a mapping between a source
- * and its dispatch control flags for a given database.
- */
-typedef struct {
- const char *name;
- uint32_t flags;
-} ns_src;
-
-
-#if 0
-/*
- * Default sourcelists (if nsswitch.conf is missing, corrupt,
- * or the requested database doesn't have an entry)
- */
-extern const ns_src __nsdefaultsrc[];
-extern const ns_src __nsdefaultcompat[];
-extern const ns_src __nsdefaultcompat_forceall[];
-extern const ns_src __nsdefaultfiles[];
-extern const ns_src __nsdefaultfiles_forceall[];
-extern const ns_src __nsdefaultnis[];
-extern const ns_src __nsdefaultnis_forceall[];
-#endif
-
-/*
- * ns_mtab - `nsswitch method table'
- * An nsswitch module provides a mapping from (database name, method name)
- * tuples to the nss_method and associated callback data. Effectively,
- * ns_dtab, but used for dynamically loaded modules.
- */
-typedef struct {
- const char *database;
- const char *name;
- nss_method method;
- void *mdata;
-} ns_mtab;
-
-/*
- * nss_module_register_fn - module registration function
- * called at module load
- * nss_module_unregister_fn - module un-registration function
- * called at module unload
- */
-typedef void (*nss_module_unregister_fn)(ns_mtab *, u_int);
-typedef ns_mtab *(*nss_module_register_fn)(const char *, u_int *,
- nss_module_unregister_fn *);
-
-#ifdef _NS_PRIVATE
-
-/*
- * Private data structures for back-end nsswitch implementation.
- */
-
-/*
- * ns_dbt - `nsswitch database thang'
- * For each database in /etc/nsswitch.conf there is a ns_dbt, with its
- * name and a list of ns_src's containing the source information.
- */
-typedef struct {
- const char *name; /* name of database */
- ns_src *srclist; /* list of sources */
- u_int srclistsize; /* size of srclist */
-} ns_dbt;
-
-/*
- * ns_mod - `nsswitch module'
- */
-typedef struct {
- const char *name; /* module name */
- void *handle; /* handle from dlopen() */
- ns_mtab *mtab; /* method table */
- u_int mtabsize; /* size of mtab */
- /* called to unload module */
- nss_module_unregister_fn unregister;
-} ns_mod;
-
-#endif /* _NS_PRIVATE */
-
-
-#include <sys/cdefs.h>
-
-__BEGIN_DECLS
-int nsdispatch(void *, const ns_dtab [], const char *,
- const char *, const ns_src [], ...);
-
-#ifdef _NS_PRIVATE
-int _nsdbtaddsrc(ns_dbt *, const ns_src *);
-void _nsdbtdump(const ns_dbt *);
-int _nsdbtput(const ns_dbt *);
-void _nsyyerror(const char *);
-int _nsyylex(void);
-#endif /* _NS_PRIVATE */
-
-__END_DECLS
-
-#endif /* !_NSSWITCH_H */
diff --git a/libc/dns/net/nsdispatch.c b/libc/dns/net/nsdispatch.c
index 15282be..fb6d8f6 100644
--- a/libc/dns/net/nsdispatch.c
+++ b/libc/dns/net/nsdispatch.c
@@ -69,26 +69,14 @@
*/
#include <sys/cdefs.h>
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/stat.h>
#include <assert.h>
-#ifdef __ELF__
-#include <dlfcn.h>
-#endif /* __ELF__ */
-#include <fcntl.h>
-#define _NS_PRIVATE
#include <nsswitch.h>
#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include <strings.h>
-#include <unistd.h>
static nss_method
-_nsmethod(const char *source, const char *database, const char *method,
+_nsmethod(const char *source, const char *database __unused, const char *method __unused,
const ns_dtab disp_tab[], void **cb_data)
{
int curdisp;