Make complete getcwd work in rtld

5 files changed, 54 insertions, 9 deletions

diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 61fbfb4fc8..3b4b63f844 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -147,7 +147,8 @@ sysdep_routines += xstatconv internal_statvfs internal_statvfs64 \
 endif
 
 ifeq ($(subdir),elf)
-sysdep-rtld-routines += dl-brk dl-sbrk dl-getcwd
+sysdep-rtld-routines += dl-brk dl-sbrk dl-getcwd dl-openat64 dl-opendir \
+			dl-fxstatat64
 
 CPPFLAGS-lddlibc4 += -DNOT_IN_libc
 endif
diff --git a/sysdeps/unix/sysv/linux/dl-fxstatat64.c b/sysdeps/unix/sysv/linux/dl-fxstatat64.c
new file mode 100644
index 0000000000..9a17a9b739
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/dl-fxstatat64.c
@@ -0,0 +1,6 @@
+/* In this implementation we do not really care whether the call fails
+   because of missing kernel support since we do not even call the
+   function in this case.  */
+#undef __ASSUME_ATFCTS
+#define __ASSUME_ATFCTS 1
+#include "fxstatat64.c"
diff --git a/sysdeps/unix/sysv/linux/dl-openat64.c b/sysdeps/unix/sysv/linux/dl-openat64.c
new file mode 100644
index 0000000000..ca296fd7ca
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/dl-openat64.c
@@ -0,0 +1,40 @@
+/* Copyright (C) 2011 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by Ulrich Drepper <drepper@gmain.com>, 2003.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <assert.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <sysdep.h>
+
+
+int
+openat64 (dfd, file, oflag)
+     int dfd;
+     const char *file;
+     int oflag;
+{
+  assert ((oflag & O_CREAT) == 0);
+
+#ifdef __NR_openat
+  return INLINE_SYSCALL (openat, 3, dfd, file, oflag | O_LARGEFILE);
+#else
+  __set_errno (ENOSYS);
+  return -1;
+#endif
+}
diff --git a/sysdeps/unix/sysv/linux/dl-opendir.c b/sysdeps/unix/sysv/linux/dl-opendir.c
new file mode 100644
index 0000000000..72d2c06cdc
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/dl-opendir.c
@@ -0,0 +1,6 @@
+/* In this implementation we do not really care whether the opened
+   file descriptor has the CLOEXEC bit set.  The only call happens
+   long before there is a call to fork or exec.  */
+#undef __ASSUME_O_CLOEXEC
+#define __ASSUME_O_CLOEXEC 1
+#include <opendir.c>
diff --git a/sysdeps/unix/sysv/linux/getcwd.c b/sysdeps/unix/sysv/linux/getcwd.c
index db3e292964..fb0dcefd58 100644
--- a/sysdeps/unix/sysv/linux/getcwd.c
+++ b/sysdeps/unix/sysv/linux/getcwd.c
@@ -124,9 +124,6 @@ __getcwd (char *buf, size_t size)
 	  return buf;
 	}
 
-      // XXX This should not be necessary but the full getcwd implementation
-      // drags in too much for the current build proces of ld.so to handle
-#ifndef NOT_IN_libc
       /* The system call cannot handle paths longer than a page.
 	 Neither can the magic symlink in /proc/self.  Just use the
 	 generic implementation right away.  */
@@ -149,7 +146,6 @@ __getcwd (char *buf, size_t size)
 
 	  return result;
 	}
-#endif
 
 # if __ASSUME_GETCWD_SYSCALL
       /* It should never happen that the `getcwd' syscall failed because
@@ -241,11 +237,7 @@ __getcwd (char *buf, size_t size)
 }
 weak_alias (__getcwd, getcwd)
 
-      // XXX This should not be necessary but the full getcwd implementation
-      // drags in too much for the current build proces of ld.so to handle
-#ifndef NOT_IN_libc
 /* Get the code for the generic version.  */
 #define GETCWD_RETURN_TYPE	static char * internal_function
 #define __getcwd		generic_getcwd
 #include <sysdeps/posix/getcwd.c>
-#endif