* sysdeps/unix/sysv/linux/bits/sched.h: Declare unshare.

	* sysdeps/unix/sysv/linux/Versions [libc, GLIBC_2.4]: Export
	unshare.
	* sysdeps/unix/sysv/linux/syscalls.list: Add unshare syscall.

	* sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Add some
	preprocessor magic so that the compiler won't see the prototypes
	for the functions we are defining as stubs.

diff --git a/ChangeLog b/ChangeLog
index 4cb7c53..902544d 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,14 @@
+2006-02-08  Ulrich Drepper  <drepper@redhat.com>
+
+       * sysdeps/unix/sysv/linux/bits/sched.h: Declare unshare.
+       * sysdeps/unix/sysv/linux/Versions [libc, GLIBC_2.4]: Export
+       unshare.
+       * sysdeps/unix/sysv/linux/syscalls.list: Add unshare syscall.
+
+       * sysdeps/unix/Makefile ($(objpfx)stub-syscalls.c): Add some
+       preprocessor magic so that the compiler won't see the prototypes
+       for the functions we are defining as stubs.
+
 2006-02-05  Ulrich Drepper  <drepper@redhat.com>
 
        * io/ftw.c (ftw_startup): Use fchdir to return to original

diff --git a/sysdeps/unix/Makefile b/sysdeps/unix/Makefile
index 5b326e0..c1da42f 100644 (file)
--- a/sysdeps/unix/Makefile
+++ b/sysdeps/unix/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1991,1992,1993,1994,1995,1996,1997,1998,1999,2003
+# Copyright (C) 1991,1992,1993,1994,1995,1996,1997,1998,1999,2003, 2006
 #      Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
@@ -294,7 +294,13 @@ sysdep_routines += stub-syscalls
 $(objpfx)stub-syscalls.c: $(common-objpfx)sysd-syscalls \
                          $(..)sysdeps/unix/Makefile
        $(make-target-directory)
-       (echo '#include <errno.h>'; \
+       (for call in $(unix-stub-syscalls); do \
+          echo "#define $$call RENAMED_$$call"; \
+        done; \
+        echo '#include <errno.h>'; \
+        for call in $(unix-stub-syscalls); do \
+          echo "#undef $$call"; \
+        done; \
         echo 'long int _no_syscall (void)'; \
         echo '{ __set_errno (ENOSYS); return -1L; }'; \
         for call in $(unix-stub-syscalls); do \

diff --git a/sysdeps/unix/sysv/linux/Versions b/sysdeps/unix/sysv/linux/Versions
index 436573a..fed28f2 100644 (file)
--- a/sysdeps/unix/sysv/linux/Versions
+++ b/sysdeps/unix/sysv/linux/Versions
@@ -118,6 +118,8 @@ libc {
   GLIBC_2.4 {
     inotify_init; inotify_add_watch; inotify_rm_watch;
 
+    unshare;
+
     #errlist-compat    132
     _sys_errlist; sys_errlist; _sys_nerr; sys_nerr;
   }

diff --git a/sysdeps/unix/sysv/linux/bits/sched.h b/sysdeps/unix/sysv/linux/bits/sched.h
index 2ca7df0..4a95a26 100644 (file)
--- a/sysdeps/unix/sysv/linux/bits/sched.h
+++ b/sysdeps/unix/sysv/linux/bits/sched.h
@@ -69,10 +69,13 @@ struct sched_param
 
 __BEGIN_DECLS
 
-/* Clone current process.  */
 #ifdef __USE_MISC
+/* Clone current process.  */
 extern int clone (int (*__fn) (void *__arg), void *__child_stack,
                  int __flags, void *__arg, ...) __THROW;
+
+/* Unshare the specified resources.  */
+extern int unshare (int __flags) __THROW;
 #endif
 
 __END_DECLS

diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list
index 88e1f5a..053d7e0 100644 (file)
--- a/sysdeps/unix/sysv/linux/syscalls.list
+++ b/sysdeps/unix/sysv/linux/syscalls.list
@@ -73,6 +73,7 @@ sigaltstack   -       sigaltstack     i:PP    __sigaltstack   sigaltstack
 sysinfo                EXTRA   sysinfo         i:p     sysinfo
 swapon         -       swapon          i:si    __swapon        swapon
 swapoff                -       swapoff         i:s     __swapoff       swapoff
+unshare                EXTRA   unshare         i:i     unshare
 uselib         EXTRA   uselib          i:s     uselib
 wait4          -       wait4           i:iWiP  __wait4         wait4