update from main archive 961211cvs/libc-961214cvs/libc-961213cvs/libc-961212

Thu Dec 12 03:32:21 1996  Ulrich Drepper  <drepper@cygnus.com>

	* libio/_G_config.h: Add definition of _G_int16_t, _G_int32_t,
	_G_uint16_t, _G_uin32_t, _G_HAVE_BOOL, _G_HAVE_MMAP, and
	_G_ARGS.

	Change libio buffer handling to allocate internal buffers using
	mmap if possible.
	* libio/filedoalloc.c (_IO_file_doallocate): Change call to
	ALLOC_BUF.
	* libio/genops.c (_IO_setb, _IO_default_finish): Change call
	to FREE_BUF.
	(_IO_default_doallocate): Change call to ALLOC_BUF.
	* libio/libioP.h: Change definition of ALLOC_BUF and FREE_BUF
	to use mmap/munmap when possible.
	* libio/memstream.c: Don't use ALLOC_BUF, but directly malloc.
	* libio/vasprintf.c: Likewise.
	Patch by HJ Lu.

	* libio/libio.h: Define NULL as __null only for gcc-2.8 and up.
	* libio/libioP.h: Likewise.

	* libio/fileops.c (_IO_file_read, _IO_file_write): Don't
	restart syscall when EINTR was returned.  Necessary for POSIX.1.

	* libio/strops.c (_IO_str_overflow): Add cast to prevent warning.

	* new-malloc/malloc.c (heap_trim): Correctly place parentheses to
	prevent warnings.

	* nis/Makefile: Remove rules for bsd-tools which are not part
	of glibc.
	Patch by Thorsten Kukuk.

	* nis/ypclnt.c: Add prototype for xdr_free.
	Add const to first parameter for __yp_bind.
	* nis/nss_compat/compat-pwd.c (getpwent_next_netgr, getpwent_next_nis,
	getpwent_next_file): Variable `p2len' must have type size_t.
	* nis/nss_nis/nis-alias.c: Add casts to prevent warnings.
	* nis/nss_nis/nis-ethers.c: Likewise.
	* nis/nss_nis/nis-grp.c: Likewise.
	* nis/nss_nis/nis-hosts.c: Likewise.
	* nis/nss_nis/nis-network.c: Likewise.
	* nis/nss_nis/nis-proto.c: Likewise.
	* nis/nss_nis/nis-pwd.c: Likewise.
	* nis/nss_nis/nis-rpc.c: Likewise.
	* nis/nss_nis/nis-service.c: Likewise.
	* nis/nss_nis/nis-spwd.c: Likewise.

	* nis/rpcsvc/yp_prot.h (ypreq_key): Change type of members to
	`const char *'.
	(ypmaplist): Change member names to `map' and `next' and provide
	#defines for old names.
	Patch by Thorsten Kukuk.

	* nss/nss_files/files-parse.c (parse_line, parse_list): Change
	type for `datalen' parameter to size_t.

	* shsdow/lckpwdf.c: Use fcntl forlocking, not flock.

	* stdio-common/printf.c [USE_IN_LIBIO]: Provide alias _IO_printf
	for printf.
	* stdio-common/sscanf.c [USE_IN_LIBIO]: Provide alias _IO_sscanf
	for sscanf.
	Patch by HJ Lu.

	* stdio-common/tmpfile.c: Update copyright.

	* stdio-common/vfscanf.c: Correctly handle EINTR error from fgetc
	function.
	Don't eat white space for `C' format.

	* stdlib/tst-strtol.c [~0UL != 0xffffffff]: Fix typo in test data.

	* sysdeps/generic/abort.c: Update copyright.  De-ANSI-declfy.
	* sysdeps/i386/abort.c: Removed.  This version does not use
	signal SIGABRT.

	* sysdeps/i386/fpu/__math.h: Define __NO_MATH_INLINES if not using
	gcc-2.8 or up.
	Patch by HJ Lu.

	* sysdeps/posix/tempname.c: Test for error but EEXIST after open
	call.  If EMFILE, ENFILE, or EINTR return with error.

Wed Dec 11 14:43:52 1996  Ulrich Drepper  <drepper@cygnus.com>

	* gnu-versions.h: Set _GNU_OBSTACK_INTERFACE_VERSION back to 1.
	We are compatible again.
	* new-malloc/obstack.h (struct obstack): Add back alloc_failed bit
	even though it is not used.
	* malloc/obstack.h: Likewise.
	* new-malloc/obstack.c (_obstack_begin, _obstack_begin_1): Initialize
	alloc_failed bit to 0.

	* time/strftime.c: Extend for Emacs' needs.  Recognize field width,
	%P format and `0' modifier.

Tue Dec 10 21:20:44 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* Makerules (make-link): Don't discard exit codes of intermediate
	commands.  Always use rellns-sh if symbolic links are available.

Tue Dec 10 20:09:51 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/netinet/in.h: Enclose #include
	<linux/in.h> in __BEGIN_DECLS/__END_DECLS to avoid linkage
	conflict of ntohs etc. in <asm/byteorder.h>.

9 files changed, 82 insertions, 21 deletions

diff --git a/libio/_G_config.h b/libio/_G_config.h
index 34d77e2b80..5fa7300bf7 100644
--- a/libio/_G_config.h
+++ b/libio/_G_config.h
@@ -16,6 +16,13 @@
 #define	_G_pid_t	__pid_t
 #define	_G_uid_t	__uid_t
 
+typedef int _G_int16_t __attribute__ ((__mode__ (__HI__)));
+typedef int _G_int32_t __attribute__ ((__mode__ (__SI__)));
+typedef unsigned int _G_uint16_t __attribute__ ((__mode__ (__HI__)));
+typedef unsigned int _G_uint32_t __attribute__ ((__mode__ (__SI__)));
+
+#define _G_HAVE_BOOL 1
+
 
 /* These library features are always available in the GNU C library.  */
 #define _G_HAVE_ATEXIT 1
@@ -25,6 +32,7 @@
 #define _G_va_list __gnuc_va_list
 
 #define _G_HAVE_PRINTF_FP 1
+#define _G_HAVE_MMAP 1
 
 /* This is defined by <statbuf.h> if `st_blksize' exists.  */
 #define _G_HAVE_ST_BLKSIZE defined (_STATBUF_ST_BLKSIZE)
@@ -37,4 +45,10 @@
 #define _G_VTABLE_LABEL_HAS_LENGTH 1
 
 
+#if defined (__cplusplus) || defined (__STDC__)
+#define _G_ARGS(ARGLIST) ARGLIST
+#else
+#define _G_ARGS(ARGLIST) ()
+#endif
+
 #endif	/* _G_config.h */
diff --git a/libio/filedoalloc.c b/libio/filedoalloc.c
index eee489b825..f36bfb3e32 100644
--- a/libio/filedoalloc.c
+++ b/libio/filedoalloc.c
@@ -98,9 +98,7 @@ DEFUN(_IO_file_doallocate, (fp),
       size = _IO_BUFSIZ;
 #endif
     }
-  p = ALLOC_BUF(size);
-  if (p == NULL)
-    return EOF;
+  ALLOC_BUF(p, size, EOF);
   _IO_setb(fp, p, p+size, 1);
   if (couldbetty && __isatty (fp->_fileno))
     fp->_flags |= _IO_LINE_BUF;
diff --git a/libio/fileops.c b/libio/fileops.c
index b5026e167a..3294befbd2 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -547,7 +547,7 @@ DEFUN(_IO_file_read, (fp, buf, size),
   for (;;)
     {
       _IO_ssize_t count = _IO_read(fp->_fileno, buf, size);
-#ifdef EINTR
+#if 0 && defined EINTR
       if (count == -1 && errno == EINTR)
 	continue;
 #endif
@@ -586,7 +586,7 @@ DEFUN(_IO_file_write, (f, data, n),
       _IO_ssize_t count = _IO_write(f->_fileno, data, to_do);
       if (count == EOF)
 	{
-#ifdef EINTR
+#if 0 && defined EINTR
 	  if (errno == EINTR)
 	    continue;
 	  else
diff --git a/libio/genops.c b/libio/genops.c
index 3a58cd2eaf..52b8fc312a 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -278,7 +278,7 @@ DEFUN(_IO_setb, (f, b, eb, a),
       _IO_FILE *f AND char *b AND char *eb AND int a)
 {
   if (f->_IO_buf_base && !(f->_flags & _IO_USER_BUF))
-    FREE_BUF(f->_IO_buf_base);
+    FREE_BUF(f->_IO_buf_base, _IO_blen (f));
   f->_IO_buf_base = b;
   f->_IO_buf_end = eb;
   if (a)
@@ -438,9 +438,9 @@ int
 DEFUN(_IO_default_doallocate, (fp),
       _IO_FILE *fp)
 {
-  char *buf = ALLOC_BUF(_IO_BUFSIZ);
-  if (buf == NULL)
-    return EOF;
+  char *buf;
+
+  ALLOC_BUF(buf, _IO_BUFSIZ, EOF);
   _IO_setb(fp, buf, buf+_IO_BUFSIZ, 1);
   return 1;
 }
@@ -487,7 +487,7 @@ DEFUN(_IO_default_finish, (fp),
   struct _IO_marker *mark;
   if (fp->_IO_buf_base && !(fp->_flags & _IO_USER_BUF))
     {
-      FREE_BUF(fp->_IO_buf_base);
+      FREE_BUF(fp->_IO_buf_base, _IO_blen (fp));
       fp->_IO_buf_base = fp->_IO_buf_end = NULL;
     }
 
diff --git a/libio/libio.h b/libio/libio.h
index acc34c0d7a..49f1d8ccd4 100644
--- a/libio/libio.h
+++ b/libio/libio.h
@@ -83,7 +83,8 @@ the executable file might be covered by the GNU General Public License. */
 #define EOF (-1)
 #endif
 #ifndef NULL
-#ifdef __GNUG__
+#if defined __GNUG__ && \
+    (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
 #define NULL (__null)
 #else
 #if !defined(__cplusplus)
diff --git a/libio/libioP.h b/libio/libioP.h
index 008f9b7edf..c9a639ab9a 100644
--- a/libio/libioP.h
+++ b/libio/libioP.h
@@ -396,7 +396,8 @@ extern void (*_IO_cleanup_registration_needed) __P ((void));
 #define EOF (-1)
 #endif
 #ifndef NULL
-#ifdef __GNUG__
+#if defined __GNUG__ && \
+    (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
 #define NULL (__null)
 #else
 #if !defined(__cplusplus)
@@ -407,8 +408,52 @@ extern void (*_IO_cleanup_registration_needed) __P ((void));
 #endif
 #endif
 
-#define FREE_BUF(_B) free(_B)
-#define ALLOC_BUF(_S) (char*)malloc(_S)
+#if _G_HAVE_MMAP
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/param.h>
+
+#if !defined(MAP_ANONYMOUS) && defined(MAP_ANON)
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+#if !defined(MAP_ANONYMOUS) || !defined(EXEC_PAGESIZE)
+#undef _G_HAVE_MMAP
+#define _G_HAVE_MMAP 0
+#endif
+
+#endif /* _G_HAVE_MMAP */
+
+#if _G_HAVE_MMAP
+
+#define ROUND_TO_PAGE(_S) \
+       (((_S) + EXEC_PAGESIZE - 1) & ~(EXEC_PAGESIZE - 1))
+
+#define FREE_BUF(_B, _S) \
+       munmap ((_B), ROUND_TO_PAGE (_S))
+#define ALLOC_BUF(_B, _S, _R) \
+       do {								      \
+	  (_B) = (char *) mmap (0, ROUND_TO_PAGE (_S),			      \
+				PROT_READ | PROT_WRITE,			      \
+				MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);	      \
+	  if ((_B) == (char *) -1)					      \
+	    return (_R);						      \
+       } while (0)
+
+#else /* _G_HAVE_MMAP */
+
+#define FREE_BUF(_B, _S) \
+       free(_B)
+#define ALLOC_BUF(_B, _S, _R) \
+       do {								      \
+	  (_B) = (char*)malloc(_S);					      \
+	  if ((_B) == NULL)						      \
+	    return (_R);						      \
+       } while (0)
+
+#endif /* _G_HAVE_MMAP */
 
 #ifndef OS_FSTAT
 #define OS_FSTAT fstat
diff --git a/libio/memstream.c b/libio/memstream.c
index ddcce676cb..e3c34d0b34 100644
--- a/libio/memstream.c
+++ b/libio/memstream.c
@@ -80,7 +80,9 @@ open_memstream (bufloc, sizeloc)
   new_f->fp._sf._sbf._f._lock = &new_f->lock;
 #endif
 
-  buf = ALLOC_BUF (_IO_BUFSIZ);
+  buf = malloc (_IO_BUFSIZ);
+  if (buf == NULL)
+    return NULL;
   _IO_init (&new_f->fp._sf._sbf._f, 0);
   _IO_JUMPS (&new_f->fp._sf._sbf._f) = &_IO_mem_jumps;
   _IO_str_init_static (&new_f->fp._sf._sbf._f, buf, _IO_BUFSIZ, buf);
diff --git a/libio/strops.c b/libio/strops.c
index 8a6c56d055..281141eba7 100644
--- a/libio/strops.c
+++ b/libio/strops.c
@@ -124,7 +124,7 @@ DEFUN(_IO_str_overflow, (fp, c),
       fp->_IO_read_ptr = fp->_IO_read_end;
     }
   pos =  fp->_IO_write_ptr - fp->_IO_write_base;
-  if (pos >= _IO_blen(fp) + flush_only)
+  if (pos >= (_IO_size_t) (_IO_blen(fp) + flush_only))
     {
       if (fp->_flags & _IO_USER_BUF) /* not allowed to enlarge */
 	return EOF;
diff --git a/libio/vasprintf.c b/libio/vasprintf.c
index f8dba80c38..02289407f4 100644
--- a/libio/vasprintf.c
+++ b/libio/vasprintf.c
@@ -42,7 +42,7 @@ _IO_vasprintf (result_ptr, format, args)
   _IO_lock_t lock;
 #endif
   int ret;
-  string = ALLOC_BUF(init_string_size);
+  string = malloc (init_string_size);
   if (string == NULL)
     return -1;
 #ifdef _IO_MTSAFE_IO
@@ -52,13 +52,14 @@ _IO_vasprintf (result_ptr, format, args)
   _IO_JUMPS((_IO_FILE*)&sf) = &_IO_str_jumps;
   _IO_str_init_static ((_IO_FILE*)&sf, string, init_string_size, string);
   sf._sbf._f._flags &= ~_IO_USER_BUF;
-  sf._s._allocate_buffer = (_IO_alloc_type)malloc;
-  sf._s._free_buffer = (_IO_free_type)free;
+  sf._s._allocate_buffer = (_IO_alloc_type) malloc;
+  sf._s._free_buffer = (_IO_free_type) free;
   ret = _IO_vfprintf((_IO_FILE*)&sf, format, args);
   if (ret < 0)
     return ret;
-  *result_ptr = (char*)realloc(sf._sbf._f._IO_buf_base,
-			       (sf._sbf._f._IO_write_ptr - sf._sbf._f._IO_write_base) +1);
+  *result_ptr = (char *) realloc (sf._sbf._f._IO_buf_base,
+				  (sf._sbf._f._IO_write_ptr
+				   - sf._sbf._f._IO_write_base) +1);
   if (*result_ptr == NULL)
     *result_ptr = sf._sbf._f._IO_buf_base;
   (*result_ptr)[sf._sbf._f._IO_write_ptr-sf._sbf._f._IO_write_base] = '\0';