Update.

1999-08-25  Ulrich Drepper  <drepper@cygnus.com>

	* inet/Makefile (routines): Add getipnodebynm.
	* inet/getipnodebynm.c: New file.
	* nss/digits_dots.c: If HAVE_TYPE is define type contains the
	interface type.
	* nss/nss_files/files-XXX.c: Define EXTRA_ARGS, EXTRA_ARGS_DECL, and
	EXTRA_ARGS_VALUE is not already done.
	(internal_getent): Allow extra parameters and pass them to parse_line.
	(_nss_files_get,ENTNAME_r): Pass extra parameters to internal_getent.
	(_nss_files_get##name##_r): Likewise.
	* nss/nss_files/files-hosts.c: Define EXTRA_ARGS, EXTRA_ARGS_DECL,
	and EXTRA_ARGS_VALUE to pass flags and type to parser.
	Add getipnodebyname function.
	* nss/nss_files/files-parse.c: Define EXTRA_ARGS, EXTRA_ARGS_DECL, and
	EXTRA_ARGS_VALUE is not already done.
	(parse_line): Add EXTRA_ARGS_DECL to parameter list.
	* nss/nss_db/db-XXX.c (lookup): Allow extra parameters and pass them
	to parse_line.
	(_nss_db_get##name##_r): Pass extra parameters to lookup.
	(_nss_db_get,ENTNAME_r): Likewise.
	* sysdeps/generic/if_index.c (__protocol_available): New function.
	* sysdeps/unix/sysv/linux/if_index.c: Likewise.

5 files changed, 68 insertions, 31 deletions

diff --git a/nss/digits_dots.c b/nss/digits_dots.c
index 03ae2ec7a5..c3c6de7ce1 100644
--- a/nss/digits_dots.c
+++ b/nss/digits_dots.c
@@ -31,11 +31,12 @@
       host_addr_list_t *h_addr_ptrs;
       size_t size_needed;
       int addr_size;
-#ifndef HAVE_AF
-      int af = -1;
-#endif
 #ifdef HAVE_TYPE
       int af = type;
+#else
+# ifndef HAVE_AF
+      int af = -1;
+# endif
 #endif
 
       switch (af)
@@ -153,7 +154,7 @@
 			  /* That's bad.  The user hasn't specified that she
 			     allows IPv4 numeric addresses.  */
 			  result = NULL;
-			  *herrno_p = HOST_NOT_FOUND;
+			  *h_errnop = HOST_NOT_FOUND;
 			  goto done;
 			}
 		      else
@@ -206,11 +207,12 @@
 	  host_addr_list_t *h_addr_ptrs;
 	  size_t size_needed;
 	  int addr_size;
-#ifndef HAVE_AF
-	  int af = -1;
-#endif
 #ifdef HAVE_TYPE
 	  int af = type;
+#else
+# ifndef HAVE_AF
+	  int af = -1;
+# endif
 #endif
 
 	  switch (af)
diff --git a/nss/nss_db/db-XXX.c b/nss/nss_db/db-XXX.c
index 7356b34462..1cbe8c291e 100644
--- a/nss/nss_db/db-XXX.c
+++ b/nss/nss_db/db-XXX.c
@@ -1,5 +1,5 @@
 /* Common code for DB-based databases in nss_db module.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -162,7 +162,7 @@ CONCAT(_nss_db_end,ENTNAME) (void)
 /* Do a database lookup for KEY.  */
 static enum nss_status
 lookup (DBT *key, struct STRUCTURE *result,
-	void *buffer, size_t buflen, int *errnop H_ERRNO_PROTO)
+	void *buffer, size_t buflen, int *errnop H_ERRNO_PROTO EXTRA_ARGS_DECL)
 {
   char *p;
   enum nss_status status;
@@ -211,7 +211,7 @@ lookup (DBT *key, struct STRUCTURE *result,
       while (isspace (*p))
 	++p;
 
-      err = parse_line (p, result, buffer, buflen, errnop);
+      err = parse_line (p, result, buffer, buflen, errnop EXTRA_ARGS);
 
       if (err == 0)
 	{
@@ -274,7 +274,8 @@ _nss_db_get##name##_r (proto,						      \
   key.size = KEYPRINTF keypattern;					      \
   key.flags = 0;							      \
   __libc_lock_lock (lock);						      \
-  status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG);	      \
+  status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG	      \
+		   EXTRA_ARGS_VALUE);					      \
   __libc_lock_unlock (lock);						      \
   return status;							      \
 }
@@ -302,7 +303,8 @@ CONCAT(_nss_db_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer,
     {
       key.size = snprintf (key.data = buf, sizeof buf, "0%u", entidx++);
       key.flags = 0;
-      status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG);
+      status = lookup (&key, result, buffer, buflen, errnop H_ERRNO_ARG
+		       EXTRA_ARGS_VALUE);
       if (status == NSS_STATUS_TRYAGAIN
 #ifdef NEED_H_ERRNO
 	  && *herrnop == NETDB_INTERNAL
diff --git a/nss/nss_files/files-XXX.c b/nss/nss_files/files-XXX.c
index d14500197b..6dd591987b 100644
--- a/nss/nss_files/files-XXX.c
+++ b/nss/nss_files/files-XXX.c
@@ -50,6 +50,12 @@
 # define H_ERRNO_SET(val) ((void) 0)
 #endif
 
+#ifndef EXTRA_ARGS
+# define EXTRA_ARGS
+# define EXTRA_ARGS_DECL
+# define EXTRA_ARGS_VALUE
+#endif
+
 /* Locks the static variables in this file.  */
 __libc_lock_define_initialized (static, lock)
 
@@ -161,7 +167,8 @@ CONCAT(_nss_files_end,ENTNAME) (void)
 
 static enum nss_status
 internal_getent (struct STRUCTURE *result,
-		 char *buffer, size_t buflen, int *errnop H_ERRNO_PROTO)
+		 char *buffer, size_t buflen, int *errnop H_ERRNO_PROTO
+		 EXTRA_ARGS_DECL)
 {
   char *p;
   struct parser_data *data = (void *) buffer;
@@ -204,7 +211,8 @@ internal_getent (struct STRUCTURE *result,
   while (*p == '\0' || *p == '#' /* Ignore empty and comment lines.  */
 	 /* Parse the line.  If it is invalid, loop to get the next
 	    line of the file to parse.  */
-	 || ! (parse_result = parse_line (p, result, data, buflen, errnop)));
+	 || ! (parse_result = parse_line (p, result, data, buflen, errnop
+					  EXTRA_ARGS)));
 
   /* Filled in RESULT with the next entry from the database file.  */
   return parse_result == -1 ? NSS_STATUS_TRYAGAIN : NSS_STATUS_SUCCESS;
@@ -249,7 +257,7 @@ CONCAT(_nss_files_get,ENTNAME_r) (struct STRUCTURE *result, char *buffer,
       if (status == NSS_STATUS_SUCCESS)
 	{
 	  status = internal_getent (result, buffer, buflen, errnop
-				    H_ERRNO_ARG);
+				    H_ERRNO_ARG EXTRA_ARGS_VALUE);
 
 	  /* Remember this position if we were successful.  If the
 	     operation failed we give the user a chance to repeat the
@@ -298,7 +306,7 @@ _nss_files_get##name##_r (proto,					      \
       last_use = getby;							      \
 									      \
       while ((status = internal_getent (result, buffer, buflen, errnop	      \
-					H_ERRNO_ARG))			      \
+					H_ERRNO_ARG EXTRA_ARGS_VALUE))	      \
 	     == NSS_STATUS_SUCCESS)					      \
 	{ break_if_match }						      \
 									      \
diff --git a/nss/nss_files/files-hosts.c b/nss/nss_files/files-hosts.c
index 2379919f49..a5f4fcc2a3 100644
--- a/nss/nss_files/files-hosts.c
+++ b/nss/nss_files/files-hosts.c
@@ -1,5 +1,5 @@
 /* Hosts file parser in nss_files module.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -32,6 +32,9 @@
 #define DATABASE	"hosts"
 #define NEED_H_ERRNO
 
+#define EXTRA_ARGS	 , af, flags
+#define EXTRA_ARGS_DECL	 , int af, int flags
+
 #define ENTDATA hostent_data
 struct hostent_data
   {
@@ -50,9 +53,9 @@ LINE_PARSER
    STRING_FIELD (addr, isspace, 1);
 
    /* Parse address.  */
-   if (inet_pton (AF_INET, addr, entdata->host_addr) > 0)
+   if (af == AF_INET && inet_pton (AF_INET, addr, entdata->host_addr) > 0)
      {
-       if (_res.options & RES_USE_INET6)
+       if (flags & AI_V4MAPPED)
 	 {
 	   map_v4v6_address ((char *) entdata->host_addr,
 			     (char *) entdata->host_addr);
@@ -65,7 +68,8 @@ LINE_PARSER
 	   result->h_length = INADDRSZ;
 	 }
      }
-   else if (inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
+   else if (af == AF_INET6
+	    && inet_pton (AF_INET6, addr, entdata->host_addr) > 0)
      {
        result->h_addrtype = AF_INET6;
        result->h_length = IN6ADDRSZ;
@@ -82,26 +86,35 @@ LINE_PARSER
    STRING_FIELD (result->h_name, isspace, 1);
  })
 
+#define EXTRA_ARGS_VALUE \
+  , ((_res.options & RES_USE_INET6) ? AF_INET6 : AF_INET),		      \
+  ((_res.options & RES_USE_INET6) ? AI_V4MAPPED : 0)
 #include "files-XXX.c"
 
 DB_LOOKUP (hostbyname, ,,
 	   {
-	     if (result->h_addrtype != ((_res.options & RES_USE_INET6)
-					? AF_INET6 : AF_INET))
-	       continue;
 	     LOOKUP_NAME_CASE (h_name, h_aliases)
 	   }, const char *name)
 
+#undef EXTRA_ARGS_VALUE
+#define EXTRA_ARGS_VALUE \
+  , af, ((_res.options & RES_USE_INET6) ? AI_V4MAPPED : 0)
 DB_LOOKUP (hostbyname2, ,,
 	   {
-	     if (result->h_addrtype != af)
-	       continue;
 	     LOOKUP_NAME_CASE (h_name, h_aliases)
 	   }, const char *name, int af)
 
 DB_LOOKUP (hostbyaddr, ,,
 	   {
-	     if (result->h_addrtype == type && result->h_length == len &&
-		 ! memcmp (addr, result->h_addr_list[0], len))
+	     if (result->h_length == len
+		 && ! memcmp (addr, result->h_addr_list[0], len))
 	       break;
-	   }, const char *addr, int len, int type)
+	   }, const char *addr, int len, int af)
+
+#undef EXTRA_ARGS_VALUE
+#define EXTRA_ARGS_VALUE \
+  , af, flags
+DB_LOOKUP (ipnodebyname, ,,
+	   {
+	     LOOKUP_NAME_CASE (h_name, h_aliases)
+	   }, const char *name, int af, int flags)
diff --git a/nss/nss_files/files-parse.c b/nss/nss_files/files-parse.c
index d688fdc803..41f0ef6a05 100644
--- a/nss/nss_files/files-parse.c
+++ b/nss/nss_files/files-parse.c
@@ -1,5 +1,5 @@
 /* Common code for file-based database parsers in nss_files module.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -33,8 +33,18 @@
 
    NEED_H_ERRNO - defined iff an arg `int *herrnop' is used.
 
+   EXTRA_ARGS -- defined iff extra parameters must be passed to the parser
+   EXTRA_ARGS_DECL -- declaration for these extra parameters
+   EXTRA_ARGS_VALUE -- values to be passed for these parameters
+
    Also see files-XXX.c.  */
 
+#ifndef EXTRA_ARGS
+# define EXTRA_ARGS
+# define EXTRA_ARGS_DECL
+# define EXTRA_ARGS_VALUE
+#endif
+
 #define CONCAT(a,b) CONCAT1(a,b)
 #define CONCAT1(a,b) a##b
 
@@ -69,7 +79,8 @@ struct parser_data
 
 /* The parser is defined in a different module.  */
 extern int parse_line (char *line, struct STRUCTURE *result,
-		       struct parser_data *data, size_t datalen, int *errnop);
+		       struct parser_data *data, size_t datalen, int *errnop
+		       EXTRA_ARGS_DECL);
 
 # define LINE_PARSER(EOLSET, BODY) /* Do nothing */
 
@@ -80,7 +91,8 @@ extern int parse_line (char *line, struct STRUCTURE *result,
 # define LINE_PARSER(EOLSET, BODY)					      \
 parser_stclass int							      \
 parse_line (char *line, struct STRUCTURE *result,			      \
-	    struct parser_data *data, size_t datalen, int *errnop)	      \
+	    struct parser_data *data, size_t datalen, int *errnop	      \
+	    EXTRA_ARGS_DECL)						      \
 {									      \
   ENTDATA_DECL (data)							      \
   char *p = strpbrk (line, EOLSET "\n");				      \