several patches for uclibc ng

I've got several patches to fix ltp/openmp/uclibc-ng-test testcase fail on
c-sky.
- fix a ltp testcase.
- fix the problem that pthread creat will fail when libomp is linked before
  libc, the variable pagesize is not init.
- fix tst-cancel4 and tst-cancel16.  tst-cancelx4 and tst-cancelx16 still fail
  with this patch applied, cleanup handler is not called for open/creat/fcntl,
  seems some thing wrong with unwind, I haven't check the rootcause yet.

libc/sysdeps/linux/common/__syscall_fcntl64.c

@@ -30,7 +30,7 @@ int fcntl64(int fd, int cmd, ...)
 	arg = va_arg(list, long);
 	va_end(list);
 
-	if (SINGLE_THREAD_P || (cmd != F_SETLKW64))
+	if (SINGLE_THREAD_P || (cmd != F_SETLKW && cmd != F_SETLKW64))
 		return __NC(fcntl64)(fd, cmd, arg);
 # ifdef __NEW_THREADS
 	oldtype = LIBC_CANCEL_ASYNC();

libc/sysdeps/linux/common/ftruncate.c

@@ -15,7 +15,11 @@
 int ftruncate(int fd, __off_t length)
 {
 # if __WORDSIZE == 32
+#  if defined(__UCLIBC_SYSCALL_ALIGN_64BIT__)
+	return INLINE_SYSCALL(ftruncate64, 4, fd, 0, OFF_HI_LO(length));
+#  else
 	return INLINE_SYSCALL(ftruncate64, 3, fd, OFF_HI_LO(length));
+#  endif
 # else
 	return ftruncate64(fd, length);
 # endif

libc/sysdeps/linux/common/openat.c

@@ -9,6 +9,7 @@
 #include <sys/syscall.h>
 #include <fcntl.h>
 #include <stdarg.h>
+#include <cancel.h>
 
 #ifdef __NR_openat
 # define __NR___syscall_openat __NR_openat
@@ -16,13 +17,25 @@ static __inline__ _syscall4(int, __syscall_openat, int, fd, const char *, file,
 
 int __openat(int fd, const char *file, int o_flag, ...)
 {
+#ifdef __NEW_THREADS
+        int oldtype, result;
+#endif
 	va_list ap;
 	mode_t mode;
 
 	va_start(ap, o_flag);
 	mode = va_arg(ap, int);
 	va_end(ap);
-	return __syscall_openat(fd, file, o_flag, mode);
+
+	if (SINGLE_THREAD_P)
+		return __syscall_openat(fd, file, o_flag, mode);
+
+#ifdef __NEW_THREADS
+        oldtype = LIBC_CANCEL_ASYNC ();
+        result = __syscall_openat(fd, file, o_flag, mode);
+        LIBC_CANCEL_RESET (oldtype);
+        return result;
+#endif
 }
 
 strong_alias_untyped(__openat,openat)

libpthread/nptl/Makefile.in

@@ -146,15 +146,18 @@ CFLAGS-clock_nanosleep.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-close.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-connect.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-creat.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-creat64.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-fdatasync.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-fsync.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-lockf.c = -fexceptions
+CFLAGS-lockf64.c = -fexceptions
 CFLAGS-msgrcv.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-msgsnd.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-msync.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-nanosleep.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-open64.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-open.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-openat.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-pause.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-poll.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-ppoll.c = -fexceptions -fasynchronous-unwind-tables

libpthread/nptl/init.c

@@ -292,7 +292,12 @@ __pthread_initialize_minimal_internal (void)
 
   /* Make sure it meets the minimum size that allocate_stack
      (allocatestack.c) will demand, which depends on the page size.  */
+  #ifdef SHARED
+  extern size_t GLRO(dl_pagesize);
+  const uintptr_t pagesz = GLRO(dl_pagesize);
+  #else
   const uintptr_t pagesz = sysconf (_SC_PAGESIZE);
+  #endif
   const size_t minstack = pagesz + __static_tls_size + MINIMAL_REST_STACK;
   if (limit.rlim_cur < minstack)
     limit.rlim_cur = minstack;