update from main archive 961214cvs/libc-961215

Sun Dec 15 01:53:20 1996  Ulrich Drepper  <drepper@cygnus.com>

	* Makefile (subdirs): Change crypt to md5-crypt.
	* crypt/Makefile, crypt/md5-crypt.c, crypt/md5.c, crypt/md5.h,
	crypt/md5c-test.c, crypt/md5test.c: Move to new directory
	md5-crypt.
	* sysdeps/unix/sysv/linux/configure.in: Refer to linuxthreads and
	crypt instead of LinuxThreads and des-crypt.

	* Makefile (subdirs): Add nss back.
	* sysdeps/unix/inet/Subdirs: Move nis to end of file to fulfill
	dependencies.

	* libio/iofclose.c: Implement fclose(NULL) as closing all streams.
	* stdio-common/Makefile (routines): Add fcloseall.
	* stdio-common/fcloseall.c: New file.
	* sysdeps/generic/abort.c: Make implementation POSIX.1 compatible.

	* sysdeps/mach/libc-lock.h: Add definition of __libc_lock_trylock.
	* sysdeps/stub/libc-lock.h: Define __libc_lock_trylock to always
	return 0.

	* stdio-common/printf.h: Define MIN and MAX only if not already
	defined.

	* stdio-common/vfprintf.c: Set errno to EBADF if stream does not
	allow writing.  Required by POSIX.1.

	* libio/libioP.h (CHECK_FILE): Use MAYBE_SET_EINVAL instead of
	assignment.

	* interp.c: Update copyright.
	* libio/clearerr.c: Likewise.
	* libio/ioseekoff.c: Likewise.
	* libio/ioseekpos.c: Likewise.
	* stdio/fclose.c: Likewise.
	* stdio/fflus.c: Likewise.

	* libio/libio.h [!_IO_MTSAFE_IO]: Define _IO_cleanup_region_start
	and _IO_cleanup_region_end as empty.
	* libio/fgetc.c: Use _IO_cleanup_region_start and
	_IO_cleanup_region_end instead of __libc_cleanup_region_start and
	__libc_cleanup_region_end.
	* libio/fputc.c: Likewise.
	* libio/freopen.c: Likewise.
	* libio/fseek.c: Likewise.
	* libio/getc.c: Likewise.
	* libio/getchar.c: Likewise.
	* libio/iofclose.c: Likewise.
	* libio/iofflush.c: Likewise.
	* libio/iofgetpos.c: Likewise.
	* libio/iofgets.c: Likewise.
	* libio/iofputs.c: Likewise.
	* libio/iofread.c: Likewise.
	* libio/iofsetpos.c: Likewise.
	* libio/ioftell.c: Likewise.
	* libio/iofwrite.c: Likewise.
	* libio/iogetdelim.c: Likewise.
	* libio/iogets.c: Likewise.
	* libio/ioputs.c: Likewise.
	* libio/iosetbuffer.c: Likewise.
	* libio/iosetvbuf.c: Likewise.
	* libio/ioungetc.c: Likewise.

	* libio/iovspintf.c: Use cleanup handler to make sure no dangling
	locks can stay over.
	* libio/iovsscanf.c: Likewise.

	* libio/genops.c: Use _IO_lock_init_recursive and _IO_lock_fini
	instead of __libc_lock_init_recursive and __libc_lock_fini.

	* libio/filedoalloc.c: Only use __isatty when compiling GNU libc.
	Otherwise use isatty.
	* libio/fileops.c: Likewise for __open and open.

	* login/utmp_file.c (getutent_r_file): Use fcntl instead of
	flock.

	* nis/ypclnt.h: Add more casts to prevent warnings.

	* nss/Makefile (services): Remove dns.
	(libnss_dns, libnss_dns-inhibit-o): Remove definition.
	($(objpfx)libnss_dns.so): Removed.
	* nss/nss_dns/dns-host.c, nss/nss_dns/dns-network.c: Moved to...
	* resolv/nss_dns: ...here.
	* resolv/Makefile (extra-libs): Add libnss_dns.
	(libnss_dns-routines, libnss_dns-inhibit-o): Define as in
	nss/Makefile.

	* nss/XXX-lookup.c: Call __nss_database_lookup with new argument
	specifying alternate name for entry in /etc/nsswitch.conf
	* nss/nsswitch.c: If no entry with primary name is found in
	/etc/nsswitch.conf try alternate name if given.
	* nss/nsswitch.h: Add new parameter in prototype for
	__nss_database_lookup.
	* nss/spwd-lookup.c: Provide alternative entry name to look for.
	This makes our NSS compatible with Solaris' nsswitch.conf files.

	* string/tst-strlen.c: Change all counting variables to type size_t
	to prevent warnings.

	* sysdeps/posix/fpathconf.c: Update copyright.
	* sysdeps/posix/pathconf.c: Don't call fpathconf to do the work.
	Opening the file at this path may fail if it is a FIFO or pipe.

	These changes make the time implementation POSIX.1 compliant.
	* time/localtime.c (__localtime_r): Always call __tzset not only
	if __tzset_run is zero.
	* time/strftime.c: Add definition of memset_space to help to
	reduce for systems which have memset.
	(strftime): Don't use tm_zone member of argument for zone name.
	Instead always use tzname[].
	Call tzset() as required by POSIX.1 before any action.
	* time/tzset.c (tzset): Set tzname[] as required by POSIX.1.
	Remove global variable __tzset_run.  __tzset is now called always
	when a dependent function is used.
	(__tzset): Caching happens based on the contents of the
	environment variable TZ.

Fri Dec 13 01:06:52 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/paths.h: Add _PATH_KLOG.

Thu Dec 12 09:16:35 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* rellns-sh: Correctly handle a relative source file name.

Wed Dec 11 19:18:40 1996  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* login/utmp_file.c (setutent_file): Seek back to beginning of the
	file if resetting.

Thu Dec 12 16:39:12 1996  Thomas Bushnell, n/BSG  <thomas@gnu.ai.mit.edu>

	* hurd/hurdinit.c (map0): Delete function.  Don't do this on
	_hurd_preinit_hook.
	* hurd/hurdstartup.c (_hurd_startup): Map page zero redzone here.

9 files changed, 205 insertions, 55 deletions

diff --git a/sysdeps/generic/abort.c b/sysdeps/generic/abort.c
index 8eb45b3fde..61b99377b9 100644
--- a/sysdeps/generic/abort.c
+++ b/sysdeps/generic/abort.c
@@ -22,20 +22,54 @@
 #include <unistd.h>
 #include <signal.h>
 
+
+/* Function to close all streams and also make sure we don't loop by
+   calling abort while closing the streams.  */
+extern void __close_all_streams (void);
+
+
 /* Cause an abnormal program termination with core-dump.  */
 void
 abort (void)
 {
+  struct sigaction act;
   sigset_t sigs;
 
   if (__sigemptyset (&sigs) == 0 &&
       __sigaddset (&sigs, SIGABRT) == 0)
     __sigprocmask (SIG_UNBLOCK, &sigs, (sigset_t *) NULL);
 
+  /* If there is a user handler installed use it.  We don't close or
+     flush streams.  */
+  if (__sigaction (SIGABRT, NULL, &act) >= 0
+      && act.sa_handler != SIG_DFL)
+    {
+      /* Send signal to call user handler.  */
+      raise (SIGABRT);
+
+      /* It returns, so we are responsible for closing the streams.  */
+      __close_all_streams ();
+
+      /* There was a handler installed.  Now remove it.  */
+      memset (&act, '\0', sizeof (struct sigaction));
+      act.sa_handler = SIG_DFL;
+      __sigfillset (&act.sa_mask);
+      act.sa_flags = 0;
+      __sigaction (SIGABRT, &act, NULL);
+    }
+  else
+    /* No handler installed so the next `raise' will hopefully
+       terminate the process.  Therefore we must close the streams.  */
+    __close_all_streams ();
+
+  /* Try again.  */
+  raise (SIGABRT);
+
+  /* If we can't signal ourselves, exit.  */
+  _exit (127);
+
+  /* If even this fails make sure we never return.  */
   while (1)
-    if (raise (SIGABRT))
-      /* If we can't signal ourselves, exit.  */
-      _exit (127);
-  /* If we signal ourselves and are still alive,
-     or can't exit, loop forever.  */
+    /* For ever and ever.  */
+    ;
 }
diff --git a/sysdeps/mach/libc-lock.h b/sysdeps/mach/libc-lock.h
index 23f6ed4e94..e2caa82b9b 100644
--- a/sysdeps/mach/libc-lock.h
+++ b/sysdeps/mach/libc-lock.h
@@ -53,6 +53,9 @@ typedef struct __libc_lock_opaque__ __libc_lock_t;
 /* Lock the named lock variable.  */
 #define __libc_lock_lock(NAME) __mutex_lock (&(NAME))
 
+/* Lock the named lock variable.  */
+#define __libc_lock_trylock(NAME) __mutex_trylock (&(NAME))
+
 /* Unlock the named lock variable.  */
 #define __libc_lock_unlock(NAME) __mutex_unlock (&(NAME))
 
diff --git a/sysdeps/posix/fpathconf.c b/sysdeps/posix/fpathconf.c
index 572c0de0b1..1a2c3742e9 100644
--- a/sysdeps/posix/fpathconf.c
+++ b/sysdeps/posix/fpathconf.c
@@ -1,20 +1,20 @@
 /* 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 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., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   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 <stddef.h>
diff --git a/sysdeps/posix/pathconf.c b/sysdeps/posix/pathconf.c
index 9539957777..c06906679d 100644
--- a/sysdeps/posix/pathconf.c
+++ b/sysdeps/posix/pathconf.c
@@ -1,40 +1,152 @@
 /* Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+   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 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.
+   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., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   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 <stddef.h>
 #include <unistd.h>
+#include <limits.h>
 #include <fcntl.h>
+#include <sys/statfs.h>
 
 /* Get file-specific information about PATH.  */
 long int
 __pathconf (const char *path, int name)
 {
-  int fd = open (path, 0);
-  if (fd >= 0)
+  if (path[0] == '\0')
     {
-      long int value = __fpathconf (fd, name);
-      int save = errno;
-      (void) close (fd);
-      __set_errno (save);
-      return value;
+      __set_errno (ENOENT);
+      return -1;
     }
-  return -1L;
+
+  switch (name)
+    {
+    default:
+      __set_errno (EINVAL);
+      return -1;
+
+    case _PC_LINK_MAX:
+#ifdef	LINK_MAX
+      return LINK_MAX;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_MAX_CANON:
+#ifdef	MAX_CANON
+      return MAX_CANON;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_MAX_INPUT:
+#ifdef	MAX_INPUT
+      return MAX_INPUT;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_NAME_MAX:
+#ifdef	NAME_MAX
+      {
+	struct statfs buf;
+
+	if (__statfs (path, &buf) < 0)
+	  return errno == ENOSYS ? NAME_MAX : -1;
+	else
+	  return buf.f_namelen;
+      }
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_PATH_MAX:
+#ifdef	PATH_MAX
+      return PATH_MAX;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_PIPE_BUF:
+#ifdef	PIPE_BUF
+      return PIPE_BUF;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+
+    case _PC_CHOWN_RESTRICTED:
+#ifdef	_POSIX_CHOWN_RESTRICTED
+      return _POSIX_CHOWN_RESTRICTED;
+#else
+      return -1;
+#endif
+
+    case _PC_NO_TRUNC:
+#ifdef	_POSIX_NO_TRUNC
+      return _POSIX_NO_TRUNC;
+#else
+      return -1;
+#endif
+
+    case _PC_VDISABLE:
+#ifdef	_POSIX_VDISABLE
+      return _POSIX_VDISABLE;
+#else
+      return -1;
+#endif
+
+    case _PC_SYNC_IO:
+#ifdef	_POSIX_SYNC_IO
+      return _POSIX_SYNC_IO;
+#else
+      return -1;
+#endif
+
+    case _PC_ASYNC_IO:
+#ifdef	_POSIX_ASYNC_IO
+      return _POSIX_ASYNC_IO;
+#else
+      return -1;
+#endif
+
+    case _PC_PRIO_IO:
+#ifdef	_POSIX_PRIO_IO
+      return _POSIX_PRIO_IO;
+#else
+      return -1;
+#endif
+
+    case _PC_SOCK_MAXBUF:
+#ifdef	SOCK_MAXBUF
+      return SOCK_MAXBUF;
+#else
+      __set_errno (ENOSYS);
+      return -1;
+#endif
+    }
+
+  __set_errno (ENOSYS);
+  return -1;
 }
 
 weak_alias (__pathconf, pathconf)
diff --git a/sysdeps/stub/libc-lock.h b/sysdeps/stub/libc-lock.h
index d0a82fea21..5eb698efb5 100644
--- a/sysdeps/stub/libc-lock.h
+++ b/sysdeps/stub/libc-lock.h
@@ -49,7 +49,7 @@
 #define __libc_lock_lock(NAME)
 
 /* Try tp lock the named lock variable.  */
-#define __libc_lock_trylock(NAME)
+#define __libc_lock_trylock(NAME) 0
 
 /* Unlock the named lock variable.  */
 #define __libc_lock_unlock(NAME)
diff --git a/sysdeps/unix/inet/Subdirs b/sysdeps/unix/inet/Subdirs
index bce3ada782..5043651cc5 100644
--- a/sysdeps/unix/inet/Subdirs
+++ b/sysdeps/unix/inet/Subdirs
@@ -1,4 +1,4 @@
 inet
-nis
 resolv
 sunrpc
+nis
diff --git a/sysdeps/unix/sysv/linux/configure b/sysdeps/unix/sysv/linux/configure
index ddf8663931..4508848a03 100644
--- a/sysdeps/unix/sysv/linux/configure
+++ b/sysdeps/unix/sysv/linux/configure
@@ -60,7 +60,7 @@ fi
 # Under Linux the LinuxThreads and crypt add-on should be available.
 case $add_ons in
   # Both are available.  Good.
-  *linuxthreads*des-crypt* | *des-crypt*linuxthreads*)
+  *linuxthreads*crypt* | *crypt*linuxthreads*)
     message=
     ;;
   *linuxthreads*)
@@ -68,14 +68,14 @@ case $add_ons in
 *** WARNING:
 *** Are you sure you do not want to use the \`crypt' add-on?"
     ;;
-  *des-crypt*)
+  *crypt*)
     message="\
 *** WARNING:
-*** Are you sure you do not want to use the \`LinuxThread' add-on?"
+*** Are you sure you do not want to use the \`linuxthread' add-on?"
     ;;
   *)
     message="\
-*** WARNING: Are you sure you do not want to use the \`LinuxThreads'
+*** WARNING: Are you sure you do not want to use the \`linuxthreads'
 *** and \`crypt' add-ons?"
     ;;
 esac
@@ -83,7 +83,7 @@ esac
 if test "$message"; then
   if test $enable_sanity = yes; then
     echo "\
-*** You should not compile the GNU libc without the \`LinuxThreads' and
+*** You should not compile the GNU libc without the \`linuxthreads' and
 *** \`crypt' add-on.  Not using them risks to be incompatible with the
 *** libraries of other systems.  Consider getting the add-ons and restart
 *** the configuration.
diff --git a/sysdeps/unix/sysv/linux/configure.in b/sysdeps/unix/sysv/linux/configure.in
index fe499af438..174eb32ce1 100644
--- a/sysdeps/unix/sysv/linux/configure.in
+++ b/sysdeps/unix/sysv/linux/configure.in
@@ -45,7 +45,7 @@ fi
 # Under Linux the LinuxThreads and crypt add-on should be available.
 case $add_ons in
   # Both are available.  Good.
-  *linuxthreads*des-crypt* | *des-crypt*linuxthreads*)
+  *linuxthreads*crypt* | *crypt*linuxthreads*)
     message=
     ;;
   *linuxthreads*)
@@ -53,14 +53,14 @@ case $add_ons in
 *** WARNING:
 *** Are you sure you do not want to use the \`crypt' add-on?"
     ;;
-  *des-crypt*)
+  *crypt*)
     message="\
 *** WARNING:
-*** Are you sure you do not want to use the \`LinuxThread' add-on?"
+*** Are you sure you do not want to use the \`linuxthread' add-on?"
     ;;
   *)
     message="\
-*** WARNING: Are you sure you do not want to use the \`LinuxThreads'
+*** WARNING: Are you sure you do not want to use the \`linuxthreads'
 *** and \`crypt' add-ons?"
     ;;
 esac
@@ -68,7 +68,7 @@ esac
 if test "$message"; then
   if test $enable_sanity = yes; then
     echo "\
-*** You should not compile the GNU libc without the \`LinuxThreads' and
+*** You should not compile the GNU libc without the \`linuxthreads' and
 *** \`crypt' add-on.  Not using them risks to be incompatible with the
 *** libraries of other systems.  Consider getting the add-ons and restart
 *** the configuration.
diff --git a/sysdeps/unix/sysv/linux/paths.h b/sysdeps/unix/sysv/linux/paths.h
index f5629fc3fc..53c4fc5dcb 100644
--- a/sysdeps/unix/sysv/linux/paths.h
+++ b/sysdeps/unix/sysv/linux/paths.h
@@ -48,8 +48,9 @@
 #define	_PATH_DEVDB	"/var/run/dev.db"
 #define	_PATH_DEVNULL	"/dev/null"
 #define	_PATH_DRUM	"/dev/drum"
+#define	_PATH_KLOG	"/proc/kmsg"
 #define	_PATH_KMEM	"/dev/kmem"
-#define _PATH_LASTLOG	"/var/log/lastlog"
+#define	_PATH_LASTLOG	"/var/log/lastlog"
 #define	_PATH_MAILDIR	"/var/spool/mail"
 #define	_PATH_MAN	"/usr/man"
 #define	_PATH_MEM	"/dev/mem"