Update.

2000-04-15  Ulrich Drepper  <drepper@redhat.com>

	* posix/Makefile (headers): Add spawn.h.
	(distribute): Add spawn_int.h.
	(routines): Add spawn_faction_init, spawn_faction_destroy,
	spawn_faction_addclose, spawn_faction_addopen, spawn_faction_adddup2,
	spawnattr_init, spawnattr_destroy, spawnattr_getdefault,
	spawnattr_setdefault, spawnattr_getflags, spawnattr_setflags,
	spawnattr_getpgroup, spawnattr_setpgroup, spawn, spawnp, and spawni.
	* posix/Versions [libc] (GLIBC_2.2): Add posix_spawn_file_actions_init,
	posix_spawn_file_actions_destroy, posix_spawn_file_actions_addclose,
	posix_spawn_file_actions_addopen, posix_spawn_file_actions_adddup2,
	posix_spawnattr_init, posix_spawnattr_destroy,
	posix_spawnattr_getdefault, posix_spawnattr_setdefault,
	posix_spawnattr_getflags, posix_spawnattr_setflags,
	posix_spawnattr_getpgroup, posix_spawnattr_setpgroup, posix_spawn,
	and posix_spawnp.
	* posix/spawn.c: New file.
	* posix/spawn.h: New file.
	* posix/spawn_faction_addclose.c: New file.
	* posix/spawn_faction_adddup2.c: New file.
	* posix/spawn_faction_addopen.c: New file.
	* posix/spawn_faction_destroy.c: New file.
	* posix/spawn_faction_init.c: New file.
	* posix/spawn_int.h: New file.
	* posix/spawnattr_destroy.c: New file.
	* posix/spawnattr_getdefault.c: New file.
	* posix/spawnattr_getflags.c: New file.
	* posix/spawnattr_getpgroup.c: New file.
	* posix/spawnattr_getschedparam.c: New file.
	* posix/spawnattr_getschedpolicy.c: New file.
	* posix/spawnattr_getsigmask.c: New file.
	* posix/spawnattr_init.c: New file.
	* posix/spawnattr_setdefault.c: New file.
	* posix/spawnattr_setflags.c: New file.
	* posix/spawnattr_setpgroup.c: New file.
	* posix/spawnattr_setschedparam.c: New file.
	* posix/spawnattr_setschedpolicy.c: New file.
	* posix/spawnattr_setsigmask.c: New file.
	* posix/spawni.c: New file.
	* posix/spawnp.c: New file.

	* sysdeps/mach/hurd/bits/posix_opt.h: Add _POSIX_SPAWN.
	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.

32 files changed, 1286 insertions, 8 deletions

diff --git a/ChangeLog b/ChangeLog
index d54a90e49a..02eff57bdf 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,48 @@
+2000-04-15  Ulrich Drepper  <drepper@redhat.com>
+
+	* posix/Makefile (headers): Add spawn.h.
+	(distribute): Add spawn_int.h.
+	(routines): Add spawn_faction_init, spawn_faction_destroy,
+	spawn_faction_addclose, spawn_faction_addopen, spawn_faction_adddup2,
+	spawnattr_init, spawnattr_destroy, spawnattr_getdefault,
+	spawnattr_setdefault, spawnattr_getflags, spawnattr_setflags,
+	spawnattr_getpgroup, spawnattr_setpgroup, spawn, spawnp, and spawni.
+	* posix/Versions [libc] (GLIBC_2.2): Add posix_spawn_file_actions_init,
+	posix_spawn_file_actions_destroy, posix_spawn_file_actions_addclose,
+	posix_spawn_file_actions_addopen, posix_spawn_file_actions_adddup2,
+	posix_spawnattr_init, posix_spawnattr_destroy,
+	posix_spawnattr_getdefault, posix_spawnattr_setdefault,
+	posix_spawnattr_getflags, posix_spawnattr_setflags,
+	posix_spawnattr_getpgroup, posix_spawnattr_setpgroup, posix_spawn,
+	and posix_spawnp.
+	* posix/spawn.c: New file.
+	* posix/spawn.h: New file.
+	* posix/spawn_faction_addclose.c: New file.
+	* posix/spawn_faction_adddup2.c: New file.
+	* posix/spawn_faction_addopen.c: New file.
+	* posix/spawn_faction_destroy.c: New file.
+	* posix/spawn_faction_init.c: New file.
+	* posix/spawn_int.h: New file.
+	* posix/spawnattr_destroy.c: New file.
+	* posix/spawnattr_getdefault.c: New file.
+	* posix/spawnattr_getflags.c: New file.
+	* posix/spawnattr_getpgroup.c: New file.
+	* posix/spawnattr_getschedparam.c: New file.
+	* posix/spawnattr_getschedpolicy.c: New file.
+	* posix/spawnattr_getsigmask.c: New file.
+	* posix/spawnattr_init.c: New file.
+	* posix/spawnattr_setdefault.c: New file.
+	* posix/spawnattr_setflags.c: New file.
+	* posix/spawnattr_setpgroup.c: New file.
+	* posix/spawnattr_setschedparam.c: New file.
+	* posix/spawnattr_setschedpolicy.c: New file.
+	* posix/spawnattr_setsigmask.c: New file.
+	* posix/spawni.c: New file.
+	* posix/spawnp.c: New file.
+
+	* sysdeps/mach/hurd/bits/posix_opt.h: Add _POSIX_SPAWN.
+	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Likewise.
+
 2000-04-14  Ulrich Drepper  <drepper@redhat.com>
 
 	* malloc/Versions [libc] (GLIBC_2.2): Add posix_memalign.
diff --git a/linuxthreads/ChangeLog b/linuxthreads/ChangeLog
index 8bdc6094a0..50fa766fc6 100644
--- a/linuxthreads/ChangeLog
+++ b/linuxthreads/ChangeLog
@@ -1,5 +1,12 @@
 2000-04-15  Ulrich Drepper  <drepper@redhat.com>
 
+	* internals.h (WRITE_MEMORY_BARRIER): Define as MEMORY_BARRIER if
+	undefined.
+	* spinlock.c: Use WRITE_MEMORY_BARRIER instead of MEMORY_BARRIER
+	where possible.
+	* sysdeps/alpha/pt-machine.h: Define WRITE_MEMORY_BARRIER.
+	* sysdeps/sparc/sparc64/pt-machine.h: Likewise.
+
 	* sysdeps/unix/sysv/linux/bits/posix_opt.h: Add _POSIX_SPAWN.
 	* sysdeps/unix/sysv/linux/i386/bits/posix_opt.h: Likewise.
 
diff --git a/linuxthreads/internals.h b/linuxthreads/internals.h
index 6b115beaa2..17c8e4d4d6 100644
--- a/linuxthreads/internals.h
+++ b/linuxthreads/internals.h
@@ -358,11 +358,15 @@ static inline pthread_descr thread_self (void)
 }
 
 /* If MEMORY_BARRIER isn't defined in pt-machine.h, assume the architecture
-   doesn't need a memory barrier instruction (e.g. Intel x86) */
+   doesn't need a memory barrier instruction (e.g. Intel x86).  Some
+   architectures distinguish between normal/read and write barriers.  */
 
 #ifndef MEMORY_BARRIER
 #define MEMORY_BARRIER()
 #endif
+#ifndef WRITE_MEMORY_BARRIER
+#define WRITE_MEMORY_BARRIER() MEMORY_BARRIER()
+#endif
 
 /* Max number of times we must spin on a spinlock calling sched_yield().
    After MAX_SPIN_COUNT iterations, we put the calling thread to sleep. */
diff --git a/linuxthreads/spinlock.c b/linuxthreads/spinlock.c
index 6e7eb12e57..ac94001bda 100644
--- a/linuxthreads/spinlock.c
+++ b/linuxthreads/spinlock.c
@@ -56,7 +56,7 @@ void internal_function __pthread_lock(pthread_spinlock_t * lock,
       THREAD_SETMEM(self, p_nextlock, (pthread_descr) oldstatus);
       /* Make sure the store in p_nextlock completes before performing
          the compare-and-swap */
-      MEMORY_BARRIER();
+      WRITE_MEMORY_BARRIER();
     }
   } while(! compare_and_swap(&lock->__status, oldstatus, newstatus,
                              &lock->__spinlock));
@@ -198,7 +198,7 @@ int __pthread_compare_and_swap(long * ptr, long oldval, long newval,
     res = 0;
   }
   /* Prevent reordering of store to *ptr above and store to *spinlock below */
-  MEMORY_BARRIER();
+  WRITE_MEMORY_BARRIER();
   *spinlock = 0;
   return res;
 }
diff --git a/linuxthreads/sysdeps/alpha/pt-machine.h b/linuxthreads/sysdeps/alpha/pt-machine.h
index 25ba634528..99c9bb6b28 100644
--- a/linuxthreads/sysdeps/alpha/pt-machine.h
+++ b/linuxthreads/sysdeps/alpha/pt-machine.h
@@ -1,6 +1,6 @@
 /* Machine-dependent pthreads configuration and inline functions.
    Alpha version.
-   Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
+   Copyright (C) 1996, 1997, 1998, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Richard Henderson <rth@tamu.edu>.
 
@@ -34,6 +34,8 @@ register char *stack_pointer __asm__("$30");
 
 /* Memory barrier; default is to do nothing */
 #define MEMORY_BARRIER() __asm__ __volatile__("mb" : : : "memory")
+/* Write barrier.  */
+#define WRITE_MEMORY_BARRIER() __asm__ __volatile__("wmb" : : : "memory")
 
 
 /* Spinlock implementation; required.  */
diff --git a/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h b/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
index 02167bd601..e22f4fed3c 100644
--- a/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
+++ b/linuxthreads/sysdeps/sparc/sparc64/pt-machine.h
@@ -1,6 +1,6 @@
 /* Machine-dependent pthreads configuration and inline functions.
    Sparc v9 version.
-   Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc.
+   Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
    Contributed by Richard Henderson <rth@tamu.edu>.
 
@@ -41,6 +41,9 @@ testandset (int *spinlock)
 /* FIXME: is stbar OK, or should we use the more general membar instruction?
    If so, which mode to pass to membar? */
 #define MEMORY_BARRIER() __asm__ __volatile__("stbar" : : : "memory")
+/* Write barrier.  */
+#define WRITE_MEMORY_BARRIER() \
+     __asm__ __volatile__("membar #StoreLoad | #StoreStore" : : : "memory")
 
 
 /* Get some notion of the current stack.  Need not be exactly the top
diff --git a/posix/Makefile b/posix/Makefile
index 566c558af3..c988027e1f 100644
--- a/posix/Makefile
+++ b/posix/Makefile
@@ -27,11 +27,12 @@ headers	:= sys/utsname.h sys/times.h sys/wait.h sys/types.h unistd.h	      \
 	   bits/local_lim.h tar.h bits/utsname.h bits/confname.h	      \
 	   bits/waitflags.h bits/waitstatus.h sys/unistd.h sched.h	      \
 	   bits/sched.h re_comp.h wait.h bits/environments.h cpio.h	      \
-	   sys/sysmacros.h
+	   sys/sysmacros.h spawn.h
 
 distribute := confstr.h TESTS TESTS2C.sed testcases.h \
 	      PTESTS PTESTS2C.sed ptestcases.h \
-	      globtest.c globtest.sh wordexp-tst.sh annexc.c fnmatch_loop.c
+	      globtest.c globtest.sh wordexp-tst.sh annexc.c fnmatch_loop.c   \
+	      spawn_int.h
 
 routines :=								      \
 	uname								      \
@@ -51,7 +52,13 @@ routines :=								      \
 	sched_setp sched_getp sched_sets sched_gets sched_yield sched_primax  \
 	sched_primin sched_rr_gi					      \
 	getaddrinfo gai_strerror wordexp				      \
-	pread pwrite pread64 pwrite64
+	pread pwrite pread64 pwrite64					      \
+	spawn_faction_init spawn_faction_destroy spawn_faction_addclose	      \
+	spawn_faction_addopen spawn_faction_adddup2			      \
+	spawnattr_init spawnattr_destroy				      \
+	spawnattr_getdefault spawnattr_setdefault			      \
+	spawnattr_getflags spawnattr_setflags				      \
+	spawnattr_getpgroup spawnattr_setpgroup spawn spawnp spawni
 
 include ../Makeconfig
 
diff --git a/posix/Versions b/posix/Versions
index da7c479ffb..92c51b5e33 100644
--- a/posix/Versions
+++ b/posix/Versions
@@ -92,4 +92,16 @@ libc {
     # For the cancelation wrappers.
     __libc_pread; __libc_pread64; __libc_pwrite; __libc_pwrite64;
   }
+  GLIBC_2.2 {
+    # p*
+    posix_spawn_file_actions_init; posix_spawn_file_actions_destroy;
+    posix_spawn_file_actions_addclose; posix_spawn_file_actions_addopen;
+    posix_spawn_file_actions_adddup2;
+    posix_spawnattr_init; posix_spawnattr_destroy;
+    posix_spawnattr_getdefault; posix_spawnattr_setdefault;
+    posix_spawnattr_getflags; posix_spawnattr_setflags;
+    posix_spawnattr_getpgroup; posix_spawnattr_setpgroup;
+    posix_spawnattr_setsigmask; posix_spawnattr_getsigmask;
+    posix_spawn; posix_spawnp;
+  }
 }
diff --git a/posix/spawn.c b/posix/spawn.c
new file mode 100644
index 0000000000..93258c5624
--- /dev/null
+++ b/posix/spawn.c
@@ -0,0 +1,31 @@
+/* Copyright (C) 2000 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 <spawn.h>
+#include "spawn_int.h"
+
+/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
+   Before running the process perform the actions described in FILE-ACTIONS. */
+int
+posix_spawn (pid_t *pid, const char *path,
+	     const posix_spawn_file_actions_t *file_actions,
+	     const posix_spawnattr_t *attrp, char *const argv[],
+	     char *const envp[])
+{
+  return __spawni (pid, path, file_actions, attrp, argv, envp, 0);
+}
diff --git a/posix/spawn.h b/posix/spawn.h
new file mode 100644
index 0000000000..ea6dbf2772
--- /dev/null
+++ b/posix/spawn.h
@@ -0,0 +1,156 @@
+/* Definitions for POSIX spawn interface.
+   Copyright (C) 2000 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.  */
+
+#ifndef	_SPAWN_H
+#define	_SPAWN_H	1
+
+#include <features.h>
+#include <sched.h>
+#include <signal.h>
+#include <sys/types.h>
+
+
+/* Data structure to contain attributes for thread creation.  */
+typedef struct
+{
+  short int __flags;
+  pid_t __pgrp;
+  sigset_t __sd;
+  sigset_t __ss;
+  struct sched_param __sp;
+  int __policy;
+  int __pad[16];
+} posix_spawnattr_t;
+
+
+/* Data structure to contain information about the actions to be
+   performed in the new process with respect to file descriptors.  */
+typedef struct
+{
+  int __allocated;
+  int __used;
+  struct __spawn_action *__actions;
+  int __pad[16];
+} posix_spawn_file_actions_t;
+
+
+/* Flags to be set in the `posix_spawnattr_t'.  */
+#define POSIX_SPAWN_RESETIDS		0x01
+#define POSIX_SPAWN_SETPGROUP		0x02
+#define POSIX_SPAWN_SETSIGDEF		0x04
+#define POSIX_SPAWN_SETSIGMASK		0x08
+#define POSIX_SPAWN_SETSCHEDPARAM	0x10
+#define POSIX_SPAWN_SETSCHEDULER	0x20
+
+
+__BEGIN_DECLS
+
+/* Spawn a new process executing PATH with the attributes describes in *ATTRP.
+   Before running the process perform the actions described in FILE-ACTIONS. */
+extern int posix_spawn (pid_t *__pid, __const char *__path,
+			__const posix_spawn_file_actions_t *__file_actions,
+			__const posix_spawnattr_t *__attrp,
+			char *__const argv[], char *__const envp[]) __THROW;
+
+/* Similar to `posix_spawn' but search for FILE in the PATH.  */
+extern int posix_spawnp (pid_t *__pid, __const char *__file,
+			 __const posix_spawn_file_actions_t *__file_actions,
+			 __const posix_spawnattr_t *__attrp,
+			 char *__const argv[], char *__const envp[]) __THROW;
+
+
+/* Initialize data structure with attributes for `spawn' to default values.  */
+extern int posix_spawnattr_init (posix_spawnattr_t *__attr) __THROW;
+
+/* Free resources associated with ATTR.  */
+extern int posix_spawnattr_destroy (posix_spawnattr_t *__attr) __THROW;
+
+/* Store signal mask for signals with default handling from ATTR in
+   SIGDEFAULT.  */
+extern int posix_spawnattr_getdefault (__const posix_spawnattr_t *__attr,
+				       sigset_t *__sigdefault) __THROW;
+
+/* Set signal mask for signals with default handling in ATTR to SIGDEFAULT.  */
+extern int posix_spawnattr_setdefault (posix_spawnattr_t *__attr,
+				       __const sigset_t *__sigdefault) __THROW;
+
+/* Store signal mask for the new process from ATTR in SIGMASK.  */
+extern int posix_spawnattr_getsigmask (__const posix_spawnattr_t *__attr,
+				       sigset_t *__sigmask) __THROW;
+
+/* Set signal mask for the new process in ATTR to SIGMASK.  */
+extern int posix_spawnattr_setsigmask (posix_spawnattr_t *__attr,
+				       __const sigset_t *__sigmask) __THROW;
+
+/* Get flag word from the attribute structure.  */
+extern int posix_spawnattr_getflags (__const posix_spawnattr_t *__attr,
+				     short int *__flags) __THROW;
+
+/* Store flags in the attribute structure.  */
+extern int posix_spawnattr_setflags (posix_spawnattr_t *_attr,
+				     short int __flags) __THROW;
+
+/* Get process group ID from the attribute structure.  */
+extern int posix_spawnattr_getpgroup (__const posix_spawnattr_t *__attr,
+				      pid_t *__pgroup) __THROW;
+
+/* Store process group ID in the attribute structure.  */
+extern int posix_spawnattr_setpgroup (posix_spawnattr_t *__attr,
+				      pid_t __pgroup) __THROW;
+
+/* Get scheduling policy from the attribute structure.  */
+extern int posix_spawnattr_getschedpolicy (__const posix_spawnattr_t *__attr,
+					   int *__schedpolicy) __THROW;
+
+/* Store scheduling policy in the attribute structure.  */
+extern int posix_spawnattr_setschedpolicy (posix_spawnattr_t *__attr,
+					   int __schedpolicy) __THROW;
+
+
+/* Initialize data structure for file attribute for `spawn' call.  */
+extern int posix_spawn_file_actions_init (po