Wed Jul 3 16:29:41 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>cvs/libc-960705cvs/libc-960704

	* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.

	* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.

	* malloc/malloc-size.c (malloc_usable_size): Renamed from
	malloc_object_allocation_size.
	* malloc/malloc.h: Fix decl.

	* sys/select.h: New file, wrapper header.

	* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
	fd_set, associated macros, and select decl.

	* sysdeps/posix/isfdtype.c: New file.

Tue Jul  2 23:45:14 1996  Ulrich Drepper  <drepper@cygnus.com>

	The latest Japanese proposal for POSIX locales renames the
	CHARMAP keyword in locale definition files to CHARCONV.
	* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
        function ctype_is_charmap to ctype_is_charconv.
	* locale/programs/locfile-kw.gperf: Replace charmap keyword with
        charconv.
	* locale/programs/locfile-token.h: Add definition of token
        charconv.
	* locale/programs/locfile.c: Recognize charconv keyword.  Rename
        lables according to this.

	* locale/weight.h (get_weight): Cast constants to prevent
        warnings.

	* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
	string/strxfrm.c: Add some more casts to prevent signed<->unsigned
	warnings.

	New stuff described in P1003.1g.
	* misc/Makefile (headers): Add sys/select.h.
	(routines): Add pselect.
	* misc/sys/select.h: New file.  Declare select functions and
	needed data types and macros.
	* sysdeps/generic/pselect.c: New file.  Add generic implementation
	of pselect() function which uses select().

	* posix/getconf.c: Recognize new variables from P1003.1g.
	* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
	_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
	* posix/unistd.h: Add description of the P1003.1g variables.
	* sysdeps/generic/confname.h: Define _SC_* values for new
	variables.
	* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
	_PC_SOCK_MAXBUF.
	* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
	* sysdeps/posix/sysconf.c (sysconf): Add handling of new
	P1003.1g variables.
	* sysdeps/stub/sysconf.c (sysconf): Ditto.
	* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
	_POSIX_SELECT since Linux has this.

	* socket/Makefile (routines): Add isfdtype.
	* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
	* sysdeps/stub/isfdtype.c: New file.  Stub implementation of
	isfdtype.

	* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.

32 files changed, 528 insertions, 70 deletions

diff --git a/ChangeLog b/ChangeLog
index eaec725028..965df55058 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,70 @@
+Wed Jul  3 16:29:41 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
+
+	* nss/getXXbyYY_r.c (REENTRANT_NAME): Cast FCT in __nss_next call.
+
+	* sysdeps/generic/sbrk.c: Always call __brk (0) to update __curbrk.
+
+	* malloc/malloc-size.c (malloc_usable_size): Renamed from
+	malloc_object_allocation_size.
+	* malloc/malloc.h: Fix decl.
+
+	* sys/select.h: New file, wrapper header.
+
+	* posix/sys/types.h [__USE_BSD]: Include <sys/select.h>; remove
+	fd_set, associated macros, and select decl.
+
+	* sysdeps/posix/isfdtype.c: New file.
+
+Tue Jul  2 23:45:14 1996  Ulrich Drepper  <drepper@cygnus.com>
+
+	The latest Japanese proposal for POSIX locales renames the
+	CHARMAP keyword in locale definition files to CHARCONV.
+	* locale/programs/ld-ctype.c, locale/programs/locales.h: Rename
+        function ctype_is_charmap to ctype_is_charconv.
+	* locale/programs/locfile-kw.gperf: Replace charmap keyword with
+        charconv.
+	* locale/programs/locfile-token.h: Add definition of token
+        charconv.
+	* locale/programs/locfile.c: Recognize charconv keyword.  Rename
+        lables according to this.
+
+	* locale/weight.h (get_weight): Cast constants to prevent
+        warnings.
+
+	* stdlib/strtod.c, stdlib/strtol.c, string/strcoll.c,
+	string/strxfrm.c: Add some more casts to prevent signed<->unsigned
+	warnings.
+
+	New stuff described in P1003.1g.
+	* misc/Makefile (headers): Add sys/select.h.
+	(routines): Add pselect.
+	* misc/sys/select.h: New file.  Declare select functions and
+	needed data types and macros.
+	* sysdeps/generic/pselect.c: New file.  Add generic implementation
+	of pselect() function which uses select().
+
+	* posix/getconf.c: Recognize new variables from P1003.1g.
+	* posix/posix1_lim.h: Define _POSIX_FD_SETSIZE, _POSIX_QLIMIT,
+	_POSIX_HIWAT, and _POSIX_UIO_MAXIOV.
+	* posix/unistd.h: Add description of the P1003.1g variables.
+	* sysdeps/generic/confname.h: Define _SC_* values for new
+	variables.
+	* sysdeps/posix/fpathconf.c (fpathconf): Add handling of
+	_PC_SOCK_MAXBUF.
+	* sysdeps/stub/fpathconf.c (fpathconf): Ditto.
+	* sysdeps/posix/sysconf.c (sysconf): Add handling of new
+	P1003.1g variables.
+	* sysdeps/stub/sysconf.c (sysconf): Ditto.
+	* sysdeps/unix/sysv/linux/posix_opt.h: Define _POSIX_POLL and
+	_POSIX_SELECT since Linux has this.
+
+	* socket/Makefile (routines): Add isfdtype.
+	* sysdeps/generic/sys/socket.h: Add prototype for isfdtype.
+	* sysdeps/stub/isfdtype.c: New file.  Stub implementation of
+	isfdtype.
+
+	* wcsmbs/wcrtomb.c (wcrtomb): Fix typo.
+
 Wed Jul  3 11:26:28 1996  Roland McGrath  <roland@delasyd.gnu.ai.mit.edu>
 
 	* elf/Makefile (LDFLAGS-dl.so): New variable.
diff --git a/locale/programs/ld-ctype.c b/locale/programs/ld-ctype.c
index 4c74549983..0ca3af584b 100644
--- a/locale/programs/ld-ctype.c
+++ b/locale/programs/ld-ctype.c
@@ -665,8 +665,8 @@ ctype_map_new (struct linereader *lr, struct localedef_t *locale,
 
 
 int
-ctype_is_charmap (struct linereader *lr, struct localedef_t *locale,
-		  const char *name)
+ctype_is_charconv (struct linereader *lr, struct localedef_t *locale,
+		   const char *name)
 {
   struct locale_ctype_t *ctype = locale->categories[LC_CTYPE].ctype;
   size_t cnt;
diff --git a/locale/programs/locales.h b/locale/programs/locales.h
index a992642805..9fe85e9e07 100644
--- a/locale/programs/locales.h
+++ b/locale/programs/locales.h
@@ -99,8 +99,8 @@ void ctype_class_to (struct linereader *lr, struct localedef_t *locale,
 		     struct token *code, struct charset_t *charset);
 void ctype_class_end (struct linereader *lr, struct localedef_t *locale);
 
-int ctype_is_charmap (struct linereader *lr, struct localedef_t *locale,
-		      const char *name);
+int ctype_is_charconv (struct linereader *lr, struct localedef_t *locale,
+		       const char *name);
 void ctype_map_new (struct linereader *lr, struct localedef_t *locale,
 		    enum token_t tok, struct token *code,
 		    struct charset_t *charset);
diff --git a/locale/programs/locfile-kw.gperf b/locale/programs/locfile-kw.gperf
index 85e031c777..8af977116e 100644
--- a/locale/programs/locfile-kw.gperf
+++ b/locale/programs/locfile-kw.gperf
@@ -42,7 +42,7 @@ print,             tok_print,             0
 xdigit,            tok_xdigit,            0
 blank,             tok_blank,             0
 charclass,         tok_charclass,         0
-charmap,           tok_charmap,           0
+charconv,          tok_charconv,          0
 toupper,           tok_toupper,           0
 tolower,           tok_tolower,           0
 LC_COLLATE,        tok_lc_collate,        0
diff --git a/locale/programs/locfile-token.h b/locale/programs/locfile-token.h
index 1c3cfdc9db..b07356aebd 100644
--- a/locale/programs/locfile-token.h
+++ b/locale/programs/locfile-token.h
@@ -1,3 +1,4 @@
+
 /* Copyright (C) 1996 Free Software Foundation, Inc.
 This file is part of the GNU C Library.
 Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>.
@@ -42,6 +43,7 @@ enum token_t
 
   tok_escape_char,
   tok_comment_char,
+  tok_charmap,
   tok_end,
   tok_g0esc,
   tok_g1esc,
@@ -51,7 +53,7 @@ enum token_t
   tok_code_set_name,
   tok_mb_cur_max,
   tok_mb_cur_min,
-  tok_charmap,
+  tok_charconv,
   tok_width,
   tok_width_variable,
   tok_width_default,
diff --git a/locale/programs/locfile.c b/locale/programs/locfile.c
index 284c7ce5b6..e225e577d6 100644
--- a/locale/programs/locfile.c
+++ b/locale/programs/locfile.c
@@ -280,11 +280,11 @@ syntax error in definition of new character class"));
 	      continue;
 	    }
 
-	  if (nowtok == tok_charmap)
+	  if (nowtok == tok_charconv)
 	    {
-	      READ_STRING_LIST (ctype_map_new, bad_new_charmap);
+	      READ_STRING_LIST (ctype_map_new, bad_new_charconv);
 	      continue;
-	    bad_new_charmap:
+	    bad_new_charconv:
 	      SYNTAX_ERROR (_("\
 syntax error in definition of new character map"));
 	      continue;
@@ -324,7 +324,7 @@ syntax error in definition of new character map"));
 	    }
 
 	  /* ...or a self-defined character map.  */
-	  if (ctype_is_charmap (ldfile, result, now->val.str.start))
+	  if (ctype_is_charconv (ldfile, result, now->val.str.start))
 	    {
 	      ctype_tok_sym = nowtok;
 	      ctype_tok_str = now->val.str.start;
@@ -411,14 +411,14 @@ syntax error in character class definition"));
 	    {
 	      /* Match ( bsymbol , bsymbol )  */
 	      if (now->tok != tok_open_brace)
-		goto bad_charmap;
+		goto bad_charconv;
 
 	      now = lr_token (ldfile, charset);
 	      if (now->tok != tok_bsymbol)
 		{
-		bad_charmap:
+		bad_charconv:
 		  SYNTAX_ERROR (_("\
-syntax error in character mapping definition"));
+syntax error in character conversion definition"));
 		  state = 3;
 		  break;
 		}
@@ -428,18 +428,18 @@ syntax error in character mapping definition"));
 
 	      now = lr_token (ldfile, charset);
 	      if (now->tok != tok_comma)
-		goto bad_charmap;
+		goto bad_charconv;
 
 	      now = lr_token (ldfile, charset);
 	      if (now->tok != tok_bsymbol)
-		goto bad_charmap;
+		goto bad_charconv;
 
 	      /* Lookup arg and assign to TO.  */
 	      ctype_map_to (ldfile, result, now, charset);
 
 	      now = lr_token (ldfile, charset);
 	      if (now->tok != tok_close_brace)
-		goto bad_charmap;
+		goto bad_charconv;
 
 	      now = lr_token (ldfile, charset);
 	      if (now->tok == tok_eol)
@@ -448,7 +448,7 @@ syntax error in character mapping definition"));
 		  break;
 		}
 	      if (now->tok != tok_semicolon)
-		goto bad_charmap;
+		goto bad_charconv;
 
 	      now = lr_token (ldfile, charset);
 	    }
diff --git a/locale/weight.h b/locale/weight.h
index 904a154f82..c7a9f96c24 100644
--- a/locale/weight.h
+++ b/locale/weight.h
@@ -92,7 +92,7 @@ get_weight (const STRING_TYPE **str, weight_t *result)
 	}
     }
 
-  if (__collate_table[slot + 1] != FORWARD_CHAR)
+  if (__collate_table[slot + 1] != (u_int32_t) FORWARD_CHAR)
     {
       /* We have a simple form.  One one value for each weight.  */
       size_t cnt;
diff --git a/misc/Makefile b/misc/Makefile
index b99d3a3e1e..4ffad986ab 100644
--- a/misc/Makefile
+++ b/misc/Makefile
@@ -27,7 +27,8 @@ headers	:= sys/uio.h iovec.h sys/ioctl.h ioctls.h ioctl-types.h \
 	   ar.h a.out.h nlist.h stab.h stab.def sgtty.h \
 	   ttyent.h syslog.h sys/syslog.h paths.h sys/reboot.h \
 	   sys/mman.h sys/param.h fstab.h mntent.h search.h err.h error.h\
-	   sys/queue.h sysexits.h syscall.h sys/syscall.h sys/swap.h
+	   sys/queue.h sysexits.h syscall.h sys/syscall.h sys/swap.h \
+	   sys/select.h
 
 routines := brk sbrk sstk ioctl \
 	    readv writev \
@@ -36,7 +37,7 @@ routines := brk sbrk sstk ioctl \
 	    getpagesize \
 	    getdtsz \
 	    gethostname sethostname getdomain setdomain \
-	    select \
+	    select pselect \
 	    acct chroot fsync sync fdatasync reboot \
 	    gethostid sethostid \
 	    revoke vhangup \
diff --git a/misc/sys/select.h b/misc/sys/select.h
new file mode 100644
index 0000000000..ece1916c0d
--- /dev/null
+++ b/misc/sys/select.h
@@ -0,0 +1,81 @@
+/* `fd_set' type and related macros, and `select'/`pselect' declarations.
+Copyright (C) 1996 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/*	POSIX 1003.1g: 6.2 Select from File Descriptor Sets <sys/select.h>  */
+
+#ifndef __SYS_SELECT_H
+
+#define __SYS_SELECT_H	1
+#include <features.h>
+
+/* Get definition of needed basic types.  */
+#include <gnu/types.h>
+
+/* Get definition of timer specification structures.  */
+/* XXX this is wrong.  1003.1gD6.1 says `struct timespec'
+   is defined by <sys/select.h>, and that is all.
+   However, since a program is required to include <sys/time.h>
+   before using select/pselect anyway, perhaps it doesn't matter.  */
+#include <sys/time.h>
+
+__BEGIN_DECLS
+
+/* Representation of a set of file descriptors.  */
+#define	fd_set			__fd_set
+
+/* Maximum number of file descriptors in `fd_set'.  */
+#define	FD_SETSIZE		__FD_SETSIZE
+
+#ifdef __USE_MISC
+/* Number of bits per word of `fd_set' (some code assumes this is 32).  */
+#define	NFDBITS			__NFDBITS
+#endif
+
+
+/* Access macros for `fd_set'.  */
+#define	FD_SET(fd, fdsetp)	__FD_SET ((fd), (fdsetp))
+#define	FD_CLR(fd, fdsetp)	__FD_CLR ((fd), (fdsetp))
+#define	FD_ISSET(fd, fdsetp)	__FD_ISSET ((fd), (fdsetp))
+#define	FD_ZERO(fdsetp)		__FD_ZERO (fdsetp)
+
+
+/* Check the first NFDS descriptors each in READFDS (if not NULL) for read
+   readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS
+   (if not NULL) for exceptional conditions.  If TIMEOUT is not NULL, time out
+   after waiting the interval specified therein.  Returns the number of ready
+   descriptors, or -1 for errors.  */
+extern int __select __P ((int __nfds, __fd_set *__readfds,
+			  __fd_set *__writefds, __fd_set *__exceptfds,
+			  struct timeval *__timeout));
+extern int select __P ((int __nfds, __fd_set *__readfds,
+			__fd_set *__writefds, __fd_set *__exceptfds,
+			struct timeval *__timeout));
+
+/* Same as above only that the TIMEOUT value is given with higher
+   resolution.  This version should be used.  */
+extern int __pselect __P ((int __nfds, __fd_set *__readfds,
+			   __fd_set *__writefds, __fd_set *__exceptfds,
+			   struct timespec *__timeout));
+extern int pselect __P ((int __nfds, __fd_set *__readfds,
+			 __fd_set *__writefds, __fd_set *__exceptfds,
+			 struct timespec *__timeout));
+
+__END_DECLS
+
+#endif /* sys/select.h */
diff --git a/nss/getXXbyYY_r.c b/nss/getXXbyYY_r.c
index 42092361be..11c4e9f71f 100644
--- a/nss/getXXbyYY_r.c
+++ b/nss/getXXbyYY_r.c
@@ -122,7 +122,8 @@ REENTRANT_NAME (ADD_PARAMS, LOOKUP_TYPE *result, char *buffer, int buflen
     {
       status = (*fct) (ADD_VARIABLES, result, buffer, buflen H_ERRNO_VAR);
 
-      no_more = __nss_next (&nip, REENTRANT_NAME_STRING, &fct, status, 0);
+      no_more = __nss_next (&nip, REENTRANT_NAME_STRING,
+			    (void **) &fct, status, 0);
     }
 
   return status == NSS_STATUS_SUCCESS ? result : NULL;
diff --git a/posix/getconf.c b/posix/getconf.c
index 26d1d381b9..699cf67bfe 100644
--- a/posix/getconf.c
+++ b/posix/getconf.c
@@ -38,6 +38,7 @@ static struct conf vars[] =
     { "NAME_MAX", _PC_NAME_MAX, PATHCONF },
     { "PATH_MAX", _PC_PATH_MAX, PATHCONF },
     { "PIPE_BUF", _PC_PIPE_BUF, PATHCONF },
+    { "SOCK_MAXBUF", _PC_SOCK_MAXBUF, PATHCONF },
     { "_POSIX_CHOWN_RESTRICTED", _PC_CHOWN_RESTRICTED, PATHCONF },
     { "_POSIX_NO_TRUNC", _PC_NO_TRUNC, PATHCONF },
     { "_POSIX_VDISABLE", _PC_VDISABLE, PATHCONF },
@@ -67,6 +68,20 @@ static struct conf vars[] =
     { "_POSIX_SEMAPHORES", _SC_SEMAPHORES, SYSCONF },
     { "_POSIX_SHARED_MEMORY_OBJECTS", _SC_SHARED_MEMORY_OBJECTS, SYSCONF },
     { "_POSIX_VERSION", _SC_VERSION, SYSCONF },
+    { "_POSIX_PII", _SC_PII, SYSCONF },
+    { "_POSIX_PII_XTI", _SC_PII_XTI, SYSCONF },
+    { "_POSIX_PII_SOCKET", _SC_PII_SOCKET, SYSCONF },
+    { "_POSIX_PII_INTERNET", _SC_PII_INTERNET, SYSCONF },
+    { "_POSIX_PII_OSI", _SC_PII_OSI, SYSCONF },
+    { "_POSIX_POLL", _SC_POLL, SYSCONF },
+    { "_POSIX_SELECT", _SC_SELECT, SYSCONF },
+    { "UIO_MAXIOV", _SC_UIO_MAXIOV, SYSCONF },
+    { "_POSIX_PII_INTERNET_STREAM", _SC_PII_INTERNET_STREAM, SYSCONF },
+    { "_POSIX_PII_INTERNET_DGRAM", _SC_PII_INTERNET_DGRAM, SYSCONF },
+    { "_POSIX_PII_OSI_COTS", _SC_PII_OSI_COTS, SYSCONF },
+    { "_POSIX_PII_OSI_CLTS", _SC_PII_OSI_CLTS, SYSCONF },
+    { "_POSIX_PII_OSI_M", _SC_PII_OSI_M, SYSCONF },
+    { "_T_IOV_MAX", _SC_T_IOV_MAX, SYSCONF },
 
     { "PATH", _CS_PATH, CONFSTR },
 
diff --git a/posix/posix1_lim.h b/posix/posix1_lim.h
index acbfa64481..287e9a2d19 100644
--- a/posix/posix1_lim.h
+++ b/posix/posix1_lim.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1992, 1993, 1996 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
@@ -49,6 +49,10 @@ Cambridge, MA 02139, USA.  */
 /* Number of files one process can have open at once.  */
 #define	_POSIX_OPEN_MAX		16
 
+/* Number of descriptors that a process may examine with `pselect' or
+   `select'.  */
+#define	_POSIX_FD_SETSIZE	_POSIX_OPEN_MAX
+
 /* Number of bytes in a filename.  */
 #define	_POSIX_NAME_MAX		14
 
@@ -67,6 +71,16 @@ Cambridge, MA 02139, USA.  */
 /* Maximum length of a timezone name (element of `tzname').  */
 #define	_POSIX_TZNAME_MAX	3
 
+/* Maximum number of connections that can be queued on a socket.  */
+#define	_POSIX_QLIMIT		1
+
+/* Maximem number of bytes that can be buffered on a socket for send
+   or receive.  */
+#define	_POSIX_HIWAT		_POSIX_PIPE_BUF
+
+/* Maximum number of elements in an `iovec' array.  */
+#define	_POSIX_UIO_MAXIOV	16
+
 
 /* Get the implementation-specific values for the above.  */
 #include <local_lim.h>
diff --git a/posix/sys/types.h b/posix/sys/types.h
index 8265fa0cb6..05d63d6f33 100644
--- a/posix/sys/types.h
+++ b/posix/sys/types.h
@@ -122,35 +122,9 @@ typedef long int key_t;
 #ifdef	__USE_BSD
 /* In BSD <sys/types.h> is expected to define BYTE_ORDER.  */
 #include <endian.h>
-#endif
-
-
-#ifdef	__USE_BSD
-
-#define	FD_SETSIZE	__FD_SETSIZE
-#define	NFDBITS		__NFDBITS
-#define	fd_set		__fd_set
-#define	FD_ZERO(set)	__FD_ZERO(set)
-#define	FD_SET(d, set)	__FD_SET((d), (set))
-#define	FD_CLR(d, set)	__FD_CLR((d), (set))
-#define	FD_ISSET(d, set)__FD_ISSET((d), (set))
-
-/* This being here makes the `select' prototype valid whether or not
-   we have already included <sys/time.h> to define `struct timeval'.  */
-struct timeval;
-
-/* Check the first NFDS descriptors each in READFDS (if not NULL) for read
-   readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS
-   (if not NULL) for exceptional conditions.  If TIMEOUT is not NULL, time out
-   after waiting the interval specified therein.  Returns the number of ready
-   descriptors, or -1 for errors.  */
-extern int __select __P ((int __nfds, __fd_set *__readfds,
-			  __fd_set *__writefds, __fd_set *__exceptfds,
-			  struct timeval *__timeout));
-extern int select __P ((int __nfds, __fd_set *__readfds,
-			__fd_set *__writefds, __fd_set *__exceptfds,
-			struct timeval *__timeout));
 
+/* It also defines `fd_set' and the FD_* macros for `select'.  */
+#include <sys/select.h>
 #endif /* Use BSD.  */
 
 
diff --git a/posix/unistd.h b/posix/unistd.h
index 1e35ea0392..92e874ed5e 100644
--- a/posix/unistd.h
+++ b/posix/unistd.h
@@ -79,6 +79,17 @@ __BEGIN_DECLS
    _POSIX_MESSAGE_PASSING	POSIX.4 message queues are supported.
    _POSIX_SEMAPHORES		POSIX.4 counting semaphores are supported.
    _POSIX_SHARED_MEMORY_OBJECTS	POSIX.4 shared memory objects are supported.
+   _POSIX_PII			Protocol-independent interfaces are supported.
+   _POSIX_PII_XTI		XTI protocol-indep. interfaces are supported.
+   _POSIX_PII_SOCKET		Socket protocol-indep. interfaces are supported.
+   _POSIX_PII_INTERNET		Internet family of protocols supported.
+   _POSIX_PII_INTERNET_STREAM	Connection-mode Internet protocol supported.
+   _POSIX_PII_INTERNET_DGRAM	Connectionless Internet protocol supported.
+   _POSIX_PII_OSI		ISO/OSI family of protocols supported.
+   _POSIX_PII_OSI_COTS		Connection-mode ISO/OSI service supported.
+   _POSIX_PII_OSI_CLTS		Connectionless ISO/OSI service supported.
+   _POSIX_POLL			Implementation supports `poll' function.
+   _POSIX_SELECT		Implementation supports `select' and `pselect'.
 
    If any of these symbols is defined as -1, the corresponding option is not
    true for any file.  If any is defined as other than -1, the corresponding
diff --git a/socket/Makefile b/socket/Makefile
index fa33a9d454..78388fd41d 100644
--- a/socket/Makefile
+++ b/socket/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1991, 1995, 1996 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
@@ -25,6 +25,6 @@ headers	:= sys/socket.h sys/un.h sockaddrcom.h
 
 routines := accept bind connect getpeername getsockname getsockopt	\
 	    listen recv recvfrom recvmsg send sendmsg sendto		\
-	    setsockopt shutdown socket socketpair
+	    setsockopt shutdown socket socketpair isfdtype
 
 include ../Rules
diff --git a/stdlib/strtod.c b/stdlib/strtod.c
index aff0045542..898542649c 100644
--- a/stdlib/strtod.c
+++ b/stdlib/strtod.c
@@ -431,19 +431,19 @@ INTERNAL (STRTOF) (nptr, endptr, group)
   /* Return 0.0 if no legal string is found.
      No character is used even if a sign was found.  */
   if ((c < L_('0') || c > L_('9'))
-      && (c != decimal || cp[1] < L_('0') || cp[1] > L_('9')))
+      && ((wint_t) c != decimal || cp[1] < L_('0') || cp[1] > L_('9')))
     RETURN (0.0, nptr);
 
   /* Record the start of the digits, in case we will check their grouping.  */
   start_of_digits = startp = cp;
 
   /* Ignore leading zeroes.  This helps us to avoid useless computations.  */
-  while (c == L_('0') || (thousands != L'\0' && c == thousands))
+  while (c == L_('0') || (thousands != L'\0' && (wint_t) c == thousands))
     c = *++cp;
 
   /* If no other digit but a '0' is found the result is 0.0.
      Return current read pointer.  */
-  if ((c < L_('0') || c > L_('9')) && c != decimal)
+  if ((c < L_('0') || c > L_('9')) && (wint_t) c != decimal)
     {
       tp = correctly_grouped_prefix (start_of_digits, cp, thousands, grouping);
       /* If TP is at the start of the digits, there was no correctly
@@ -462,7 +462,7 @@ INTERNAL (STRTOF) (nptr, endptr, group)
     {
       if (c >= L_('0') && c <= L_('9'))
 	++dig_no;
-      else if (thousands == L'\0' || c != thousands)
+      else if (thousands == L'\0' || (wint_t) c != thousands)
 	/* Not a digit or separator: end of the integer part.  */
 	break;
       c = *++cp;
@@ -512,7 +512,7 @@ INTERNAL (STRTOF) (nptr, endptr, group)
 
   /* Read the fractional digits.  A special case are the 'american style'
      numbers like `16.' i.e. with decimal but without trailing digits.  */
-  if (c == decimal)
+  if ((wint_t) c == decimal)
     {
       c = *++cp;
       while (c >= L_('0') && c <= L_('9'))
@@ -609,7 +609,7 @@ INTERNAL (STRTOF) (nptr, endptr, group)
   if (lead_zero)
     {
       /* Find the decimal point */
-      while (*startp != decimal)
+      while ((wint_t) *startp != decimal)
 	++startp;
       startp += lead_zero + 1;
       exponent -= lead_zero;
diff --git a/stdlib/strtol.c b/stdlib/strtol.c
index 06639a763a..3f34e390a1 100644
--- a/stdlib/strtol.c
+++ b/stdlib/strtol.c
@@ -248,8 +248,9 @@ INTERNAL (strtol) (nptr, endptr, base, group)
       /* Find the end of the digit string and check its grouping.  */
       end = s;
       for (c = *end; c != L_('\0'); c = *++end)
-	if (c != thousands && (c < L_('0') || c > L_('9'))
-	    && (!ISALPHA (c) || TOUPPER (c) - L_('A') + 10 >= base))
+	if ((wchar_t) c != thousands
+	    && ((wchar_t) c < L_('0') || (wchar_t) c > L_('9'))
+	    && (!ISALPHA (c) || (int) (TOUPPER (c) - L_('A') + 10) >= base))
 	  break;
       if (*s == thousands)
 	end = s;
@@ -275,7 +276,7 @@ INTERNAL (strtol) (nptr, endptr, base, group)
 	c = TOUPPER (c) - L_('A') + 10;
       else
 	break;
-      if (c >= base)
+      if ((int) c >= base)
 	break;
       /* Check for overflow.  */
       if (i > cutoff || (i == cutoff && c > cutlim))
diff --git a/string/strcoll.c b/string/strcoll.c
index a4bbabc2ac..7061a38026 100644
--- a/string/strcoll.c
+++ b/string/strcoll.c
@@ -75,7 +75,8 @@ STRCOLL (s1, s2)
 
 	  /* Here we have to check for IGNORE entries.  If these are
 	     found we count them and go on witht he next value.  */
-	  while ((w1 = s1run->data[pass].value[s1idx]) == IGNORE_CHAR)
+	  while ((w1 = s1run->data[pass].value[s1idx])
+		 == (u_int32_t) IGNORE_CHAR)
 	    {
 	      ++s1ignore;
 	      if ((forward && ++s1idx >= s1run->data[pass].number)
@@ -92,7 +93,8 @@ STRCOLL (s1, s2)
 		}
 	    }
 
-	  while ((w2 = s2run->data[pass].value[s2idx]) == IGNORE_CHAR)
+	  while ((w2 = s2run->data[pass].value[s2idx])
+		 == (u_int32_t) IGNORE_CHAR)
 	    {
 	      ++s2ignore;
 	      if ((forward && ++s2idx >= s2run->data[pass].number)
diff --git a/string/strxfrm.c b/string/strxfrm.c
index f94c16b50b..6d0a7061b7 100644
--- a/string/strxfrm.c
+++ b/string/strxfrm.c
@@ -179,7 +179,7 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n)
 
 	  /* Here we have to check for IGNORE entries.  If these are
 	     found we count them and go on witht he next value.  */
-	  while ((w = run->data[pass].value[idx]) == IGNORE_CHAR)
+	  while ((w = run->data[pass].value[idx]) == (u_int32_t) IGNORE_CHAR)
 	    {
 	      ++ignore;
 	      if ((forward && ++idx >= run->data[pass].number)
diff --git a/sys/select.h b/sys/select.h
new file mode 100644
index 0000000000..f793af7bf0
--- /dev/null
+++ b/sys/select.h
@@ -0,0 +1 @@
+#include <misc/sys/select.h>
diff --git a/sysdeps/generic/confname.h b/sysdeps/generic/confname.h
index 717229a3ab..3bc6b27652 100644
--- a/sysdeps/generic/confname.h
+++ b/sysdeps/generic/confname.h
@@ -41,8 +41,10 @@ enum
 #define	_PC_SYNC_IO		_PC_SYNC_IO
     _PC_ASYNC_IO,
 #define	_PC_ASYNC_IO		_PC_ASYNC_IO
-    _PC_PRIO_IO
+    _PC_PRIO_IO,
 #define	_PC_PRIO_IO		_PC_PRIO_IO
+    _PC_SOCK_MAXBUF
+#define	_PC_SOCK_MAXBUF		_PC_SOCK_MAXBUF
   };
 
 /* Values for the argument to `sysconf'.  */
@@ -156,7 +158,37 @@ enum
 #define	_SC_2_FORT_RUN		_SC_2_FORT_RUN
     _SC_2_SW_DEV,
 #define	_SC_2_SW_DEV		_SC_2_SW_DEV
-    _SC_2_LOCALEDEF
+    _SC_2_LOCALEDEF,
+#define	_SC_2_LOCALEDEF		_SC_2_LOCALEDEF
+
+    _SC_PII,
+#define	_SC_PII			_SC_PII
+    _SC_PII_XTI,
+#define	_SC_PII_XTI		_SC_PII_XTI
+    _SC_PII_SOCKET,
+#define	_SC_PII_SOCKET		_SC_PII_SOCKET
+    _SC_PII_INTERNET,
+#define	_SC_PII_INTERNET	_SC_PII_INTERNET
+    _SC_PII_OSI,
+#define	_SC_PII_OSI		_SC_PII_OSI
+    _SC_POLL,
+#define	_SC_POLL		_SC_POLL
+    _SC_SELECT,
+#define	_SC_SELECT		_SC_SELECT
+    _SC_UIO_MAXIOV,
+#define	_SC_UIO_MAXIOV		_SC_UIO_MAXIOV
+    _SC_PII_INTERNET_STREAM,
+#define	_SC_PII_INTERNET_STREAM	_SC_PII_INTERNET_STREAM
+    _SC_PII_INTERNET_DGRAM,
+#define	_SC_PII_INTERNET_DGRAM	_SC_PII_INTERNET_DGRAM
+    _SC_PII_OSI_COTS,
+#define	_SC_PII_OSI_COTS	_SC_PII_OSI_COTS
+    _SC_PII_OSI_CLTS,
+#define	_SC_PII_OSI_CLTS	_SC_PII_OSI_CLTS
+    _SC_PII_OSI_M,
+#define	_SC_PII_OSI_M		_SC_PII_OSI_M
+    _SC_T_IOV_MAX
+#define	_SC_T_IOV_MAX		_SC_T_IOV_MAX
   };
 
 #ifdef __USE_POSIX2
diff --git a/sysdeps/generic/pselect.c b/sysdeps/generic/pselect.c
new file mode 100644
index 0000000000..165fd32148
--- /dev/null
+++ b/sysdeps/generic/pselect.c
@@ -0,0 +1,55 @@
+/* Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/select.h>
+
+/* Check the first NFDS descriptors each in READFDS (if not NULL) for read
+   readiness, in WRITEFDS (if not NULL) for write readiness, and in EXCEPTFDS
+   (if not NULL) for exceptional conditions.  If TIMEOUT is not NULL, time out
+   after waiting the interval specified therein.  Returns the number of ready
+   descriptors, or -1 for errors.  */
+int
+__pselect (nfds, readfds, writefds, exceptfds, timeout)
+     int nfds;
+     fd_set *readfds;
+     fd_set *writefds;
+     fd_set *exceptfds;
+     struct timespec *timeout;
+{
+  struct timeval tval;
+  int retval;
+
+  /* Change nanosecond number to microseconds.  This may loose
+     precision and therefore the `pselect` should be available.  But
+     for now it is hardly found.  */
+  if (timeout != NULL)
+    TIMESPEC_TO_TIMEVAL (&tval, timeout);
+
+  retval = __select (nfds, readfds, writefds, exceptfds,
+		     timeout != NULL ? &tval : NULL);
+
+  /* Change the result back.  The remaining time must be made
+     available to the caller.  */
+  if (timeout != NULL)
+    TIMEVAL_TO_TIMESPEC (&tval, timeout);
+
+  return retval;
+}
+weak_alias (__pselect, pselect)
diff --git a/sysdeps/generic/sbrk.c b/sysdeps/generic/sbrk.c
index de7794697d..698f814e2b 100644
--- a/sysdeps/generic/sbrk.c
+++ b/sysdeps/generic/sbrk.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995, 1996 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 modify
@@ -30,7 +30,11 @@ __sbrk (ptrdiff_t increment)
 {
   void *oldbrk;
 
-  if (__curbrk == 0 && __brk (0) < 0)
+  /* Always update __curbrk from the kernel's brk value.  That way two
+     separate instances of __brk and __sbrk can share the heap, returning
+     interleaved pieces of it.  This happens when libc.so is loaded by
+     dlopen in a statically-linked program that already uses __brk.  */
+  if (__brk (0) < 0)
     return (void *) -1;
 
   if (increment == 0)
diff --git a/sysdeps/generic/sys/socket.h b/sysdeps/generic/sys/socket.h
index 759ff3b9b2..6ee3ebe52e 100644
--- a/sysdeps/generic/sys/socket.h
+++ b/sysdeps/generic/sys/socket.h
@@ -321,6 +321,10 @@ extern int accept __P ((int __fd, __SOCKADDR_ARG __addr,
 extern int shutdown __P ((int __fd, int __how));
 
 
+/* Determine whether FILDES if the property identified by the value if
+   FDTYPE.  */
+extern int isfdtype __P ((int __fildes, int __fdtype));
+
 __END_DECLS
 
 #endif /* sys/socket.h */
diff --git a/sysdeps/posix/fpathconf.c b/sysdeps/posix/fpathconf.c
index 649a2a4c49..9b54b5f04a 100644
--- a/sysdeps/posix/fpathconf.c
+++ b/sysdeps/posix/fpathconf.c
@@ -136,6 +136,14 @@ DEFUN(__fpathconf, (fd, name), int fd AND int name)
 #else
       return -1;
 #endif
+
+    case _PC_SOCK_MAXBUF:
+#ifdef	SOCK_MAXBUF
+      return SOCK_MAXBUF;
+#else
+      errno = ENOSYS;
+      return -1;
+#endif
     }
 
   errno = ENOSYS;
diff --git a/sysdeps/posix/isfdtype.c b/sysdeps/posix/isfdtype.c
new file mode 100644
index 0000000000..9ac38a8b9f
--- /dev/null
+++ b/sysdeps/posix/isfdtype.c
@@ -0,0 +1,37 @@
+/* isfdtype - Determine whether descriptor has given property.
+Copyright (C) 1996 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <errno.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+
+int
+isfdtype (int fildes, int fdtype)
+{
+  struct stat st;
+  int result;
+
+  {
+    int save_error = errno;
+    result = fstat (fildes, &st);
+    errno = save_error;
+  }
+
+  return result ?: (st.st_mode & S_IFMT) == fdtype;
+}
diff --git a/sysdeps/posix/sysconf.c b/sysdeps/posix/sysconf.c
index a52258fee2..f0dbc23606 100644
--- a/sysdeps/posix/sysconf.c
+++ b/sysdeps/posix/sysconf.c
@@ -336,6 +336,104 @@ DEFUN(__sysconf, (name), int name)
       return -1;
 #endif
 
+    case _SC_PII:
+#ifdef	_POSIX_PII
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_XTI:
+#ifdef	_POSIX_PII_XTI
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_SOCKET:
+#ifdef	_POSIX_PII_SOCKET
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET:
+#ifdef	_POSIX_PII_INTERNET
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI:
+#ifdef	_POSIX_PII_OSI
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_POLL:
+#ifdef	_POSIX_POLL
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_SELECT:
+#ifdef	_POSIX_SELECT
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_UIO_MAXIOV:
+#ifdef	UIO_MAXIOV
+      return UIO_MAXIOV;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET_STREAM:
+#ifdef	_POSIX_PII_INTERNET_STREAM
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_INTERNET_DGRAM:
+#ifdef	_POSIX_PII_INTERNET_DGRAM
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_COTS:
+#ifdef	_POSIX_PII_OSI_COTS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_CLTS:
+#ifdef	_POSIX_PII_OSI_CLTS
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_PII_OSI_M:
+#ifdef	_POSIX_PII_OSI_M
+      return 1;
+#else
+      return -1;
+#endif
+
+    case _SC_T_IOV_MAX:
+#ifdef	_T_IOV_MAX
+      return _T_IOV_MAX;
+#else
+      return -1;
+#endif
+
     case _SC_2_VERSION:
       /* This is actually supposed to return the version
 	 of the 1003.2 utilities on the system {POSIX2_VERSION}.  */
diff --git a/sysdeps/stub/fpathconf.c b/sysdeps/stub/fpathconf.c
index 4f1f1d4a1d..75880fd647 100644
--- a/sysdeps/stub/fpathconf.c
+++ b/sysdeps/stub/fpathconf.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1995, 1996 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
@@ -44,6 +44,7 @@ DEFUN(__fpathconf, (fd, name), int fd AND int name)
     case _PC_NAME_MAX:
     case _PC_PATH_MAX:
     case _PC_PIPE_BUF:
+    case _PC_SOCK_MAXBUF:
     case _PC_CHOWN_RESTRICTED:
     case _PC_NO_TRUNC:
     case _PC_VDISABLE:
diff --git a/sysdeps/stub/isfdtype.c b/sysdeps/stub/isfdtype.c
new file mode 100644
index 0000000000..560efd83fc
--- /dev/null
+++ b/sysdeps/stub/isfdtype.c
@@ -0,0 +1,29 @@
+/* isfdtype - Determine whether descriptor has given property.  Stub version.
+Copyright (C) 1996 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
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <sys/stat.h>
+
+
+int
+isfdtype (int fildes, int fdtype)
+{
+  errno = ENOSYS;
+  return -1;
+}
+stub_warning (isfdtype)
diff --git a/sysdeps/stub/sysconf.c b/sysdeps/stub/sysconf.c
index fc9ee84d13..816724ef52 100644
--- a/sysdeps/stub/sysconf.c
+++ b/sysdeps/stub/sysconf.c
@@ -59,6 +59,20 @@ DEFUN(__sysconf, (name), int name)
     case _SC_SHARED_MEMORY_OBJECTS:
     case _SC_VERSION:
 
+    case _SC_PII:
+    case _SC_PII_XTI:
+    case _SC_PII_SOCKET:
+    case _SC_PII_OSI:
+    case _SC_POLL:
+    case _SC_SELECT:
+    case _SC_UIO_MAXIOV:
+    case _SC_PII_INTERNET_STREAM:
+    case _SC_PII_INTERNET_DGRAM:
+    case _SC_PII_OSI_COTS:
+    case _SC_PII_OSI_CLTS:
+    case _SC_PII_OSI_M:
+    case _SC_T_IOV_MAX:
+
     case _SC_BC_BASE_MAX:
     case _SC_BC_DIM_MAX:
     case _SC_BC_SCALE_MAX:
diff --git a/sysdeps/unix/sysv/linux/posix_opt.h b/sysdeps/unix/sysv/linux/posix_opt.h
index d336335fc3..c1ff431fc9 100644
--- a/sysdeps/unix/sysv/linux/posix_opt.h
+++ b/sysdeps/unix/sysv/linux/posix_opt.h
@@ -47,6 +47,12 @@ Boston, MA 02111-1307, USA.  */
 /* Setting of memory protections is supported.  */
 #define	_POSIX_MEMORY_PROTECTION	1
 
+/* Implementation supports `poll' function.  */
+#define	_POSIX_POLL	1
+
+/* Implementation supports `select' and `pselect' functions.  */
+#define	_POSIX_SELECT	1
+
 /* Only root can change owner of file.  */
 #define	_POSIX_CHOWN_RESTRICTED	1
 
diff --git a/wcsmbs/wcrtomb.c b/wcsmbs/wcrtomb.c
index 2703e88a36..9069fb105c 100644
--- a/wcsmbs/wcrtomb.c
+++ b/wcsmbs/wcrtomb.c
@@ -36,7 +36,7 @@ wcrtomb (s, wc, ps)
   char fake[1];
 
   if (ps == NULL)
-    ps = internal;
+    ps = &internal;
 
   /*************************************************************\
   |* This is no complete implementation.  While the multi-byte *|