Mon Feb 26 10:22:30 1996 Roland McGrath <roland@charlie-brown.gnu.ai.mit.edu>cvs/libc-960227

	* sysdeps/unix/dirstream.h: Rewritten.
	* sysdeps/unix/readdir.c: Rewritten.
	* sysdeps/unix/telldir.c: Rewritten.
	* sysdeps/unix/closedir.c: Use <...> instead of "..." for dirstream.h.
	Remove __ from DIR struct member names.
	* sysdeps/unix/dirfd.c: Likewise.
	* sysdeps/unix/seekdir.c: Likewise.
	* sysdeps/unix/rewinddir.c: Likewise.
	* sysdeps/unix/opendir.c: Likewise.  Don't allocate extra space after
	DIR structure.
	* sysdeps/stub/direct.h: File removed.
	* sysdeps/unix/bsd/bsd4.4/direct.h: File removed.
	* sysdeps/unix/bsd/direct.h: File removed.
	* sysdeps/unix/common/direct.h: File removed.
	* sysdeps/unix/sysv/irix4/direct.h: File removed.
	* sysdeps/unix/sysv/isc3/direct.h: File removed.
	* sysdeps/unix/sysv/sco3.2.4/direct.h: File removed.
	* sysdeps/unix/sysv/sysv4/solaris2/direct.h: File removed.
	* sysdeps/unix/common/direntry.h: New file.
	* sysdeps/unix/bsd/direntry.h: New file.
	* sysdeps/unix/bsd/bsd4.4/direntry.h: New file.
	* sysdeps/unix/sysv/direntry.h: New file.
	* sysdeps/stub/direntry.h: New file.
	* dirent/dirent.h (struct dirent): Type removed.  Include <direntry.h>
	to define it.
	(_D_EXACT_NAMLEN, _D_ALLOC_NAMLEN): New macros.
	* dirent/Makefile (headers): Add direntry.h.
	(distribute): Remove direct.h.
	* sysdeps/posix/getcwd.c: Use new macros instead of d_namlen.
	* dirent/scandir.c: Likewise.
	* io/fts.c (fts_build): Likewise.
	* io/ftw.c (ftw_dir): Likewise.
	* sysdeps/posix/ttyname.c: Likewise.

	* sysdeps/unix/sysv/sysv4/solaris2/syscalls.list: New file.

	* sysdeps/mach/hurd/profil.c (MAX_PC_SAMPLES): New macro.
	(collector_timeout): New static variable.
	(update_waiter): Actually call __task_enable_pc_sampling.
	Set collector_timeout based on the `tick' count returned.
	(profile_waiter): Use MAX_PC_SAMPLES.  Set nsamples before RPC.
	Use collector_timeout in __mach_msg call.

	* gmon/Makefile (noprof): New variable containing mcount.
	Append profil unless it is in $(unix-syscalls).
	(mcount.po): Use $(noprof) for list of targets in this rule.

	* libc-symbols.h: Define _LIBC before #include <config.h>.

Sun Feb 25 12:29:23 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* config.h.in [_LIBC] (HAVE_STRERROR): Define it.
	Protect 2nd page of #undef's for generator programs with #ifndef _LIBC.

	* time/zic.c, time/zdump.c, time/private.h: Updated from ADO's latest.

Fri Feb  9 12:40:19 1996  Brendan Kehoe  <brendan@lisa.cygnus.com>

 	* libio/cleanup.c (_IO_cleanup_registration_needed)
	[!_G_HAVE_ATEXIT]: Init to NULL.
	* libio/filedoalloc.c (_IO_cleanup_registration_needed): Remove decl.

Thu Feb  8 08:12:50 1996  Brendan Kehoe  <brendan@cygnus.com>

	* libio/filedoalloc.c (_IO_cleanup_registration_needed): Revert
	previous change, since cleanup.c only defines it if _G_HAVE_ATEXIT.

Wed Feb  7 15:10:17 1996  Brendan Kehoe  <brendan@lisa.cygnus.com>

	* libio/filedoalloc.c (_IO_cleanup_registration_needed): Declare as
	extern.

Sat Feb 24 11:34:13 1996  Roland McGrath  <roland@charlie-brown.gnu.ai.mit.edu>

	* sysdeps/i386/memcmp.S: Fix argument %esp offsets.

	* time/sys/time.h (timeradd, timersub): New macros; BSD has these.

3 files changed, 39 insertions, 21 deletions

diff --git a/dirent/Makefile b/dirent/Makefile
index 532020d1eb..b6a42190eb 100644
--- a/dirent/Makefile
+++ b/dirent/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+# Copyright (C) 1991, 92, 93, 94, 95, 96 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
@@ -21,11 +21,11 @@
 #
 subdir		:= dirent
 
-headers		:= dirent.h
+headers		:= dirent.h direntry.h
 routines	:= opendir closedir readdir rewinddir \
 		   seekdir telldir scandir alphasort \
 		   getdents dirfd
-distribute := direct.h dirstream.h
+distribute := dirstream.h
 
 tests	   := list tst-seekdir
 
diff --git a/dirent/dirent.h b/dirent/dirent.h
index 5b99437301..d93a146a83 100644
--- a/dirent/dirent.h
+++ b/dirent/dirent.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 92, 93, 94, 95, 96 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
@@ -29,30 +29,48 @@ __BEGIN_DECLS
 
 #include <gnu/types.h>
 
+/* This file defines `struct dirent'.
 
-/* Directory entry structure.
+   It defines the macro `_DIRENT_HAVE_D_NAMLEN' iff there is a `d_namlen'
+   member that gives the length of `d_name'.
 
-   This structure is laid out identically to the `struct direct' that
-   represents directory entries in the GNU Hurd and in BSD 4.4 (and
-   incidentally, on disk in the Berkeley fast file system).  The `readdir'
-   implementations for GNU and BSD know this; you must change them if you
-   change this structure.  */
+   It defines the macro `_DIRENT_HAVE_D_RECLEN' iff there is a `d_reclen'
+   member that gives the size of the entire directory entry.  */
 
-struct dirent
-  {
-    __ino_t d_fileno;		/* File serial number.  */
-    unsigned short int d_reclen; /* Length of the whole `struct dirent'.  */
-    unsigned char d_type;	/* File type, possibly unknown.  */
-    unsigned char d_namlen;	/* Length of the file name.  */
-
-    /* Only this member is in the POSIX standard.  */
-    char d_name[1];		/* File name (actually longer).  */
-  };
+#include <direntry.h>
 
 #if defined(__USE_BSD) || defined(__USE_MISC)
 #define	d_ino		d_fileno /* Backward compatibility.  */
 #endif
 
+/* These macros extract size information from a `struct dirent *'.
+   They may evaluate their argument multiple times, so it must not
+   have side effects.  Each of these may involve a relatively costly
+   call to `strlen' on some systems, so these values should be cached.
+
+   _D_EXACT_NAMLEN (DP)	returns the length of DP->d_name, not including
+   its terminating null character.
+
+   _D_ALLOC_NAMLEN (DP)	returns a size at least (_D_EXACT_NAMLEN (DP) + 1);
+   that is, the allocation size needed to hold the DP->d_name string.
+   Use this macro when you don't need the exact length, just an upper bound.
+   This macro is less likely to require calling `strlen' than _D_EXACT_NAMLEN.
+   */
+
+#ifdef _DIRENT_HAVE_D_NAMLEN
+#define _D_EXACT_NAMLEN(d) ((d)->d_namlen)
+#define _D_ALLOC_NAMLEN(d) (_D_EXACT_NAMLEN (d) + 1)
+#else
+#define _D_EXACT_NAMLEN(d) (strlen ((d)->d_name))
+#ifdef _DIRENT_HAVE_D_RECLEN
+#define _D_ALLOC_NAMLEN(d) (((char *) (d) + (d)->d_reclen) - &(d)->d_name[0])
+#else
+#define _D_ALLOC_NAMLEN(d) (sizeof (d)->d_name > 1 ? sizeof (d)->d_name : \
+			    _D_EXACT_NAMLEN (d) + 1)
+#endif
+#endif
+
+
 #ifdef __USE_BSD
 /* File types for `d_type'.  */
 enum
diff --git a/dirent/scandir.c b/dirent/scandir.c
index e2ef63a9ce..6907f0873f 100644
--- a/dirent/scandir.c
+++ b/dirent/scandir.c
@@ -64,7 +64,7 @@ DEFUN(scandir, (dir, namelist, select, cmp),
 	    v = new;
 	  }
 
-	dsize = &d->d_name[d->d_namlen + 1] - (char *) d;
+	dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;
 	v[i] = (struct dirent *) malloc (dsize);
 	if (v[i] == NULL)
 	  goto lose;