not-cancel.h: Use openat if arch does not have the open syscall

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

libc/sysdeps/linux/common/not-cancel.h

@@ -23,10 +23,17 @@
 #ifdef NOT_IN_libc
 
 /* Uncancelable open.  */
+#if defined __NR_openat && !defined __NR_open
+#define open_not_cancel(name, flags, mode) \
+   INLINE_SYSCALL (openat, 4, AT_FDCWD, (const char *) (name), (flags), (mode))
+#define open_not_cancel_2(name, flags) \
+   INLINE_SYSCALL (openat, 3, AT_FDCWD, (const char *) (name), (flags))
+#else
 #define open_not_cancel(name, flags, mode) \
    INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode))
 #define open_not_cancel_2(name, flags) \
    INLINE_SYSCALL (open, 2, (const char *) (name), (flags))
+#endif
 
 #if 0
 /* Uncancelable openat.  */

libpthread/linuxthreads.old/sysdeps/pthread/not-cancel.h

@@ -21,10 +21,19 @@
 #include <sysdep.h>
 
 /* Uncancelable open.  */
+#if defined __NR_openat && !defined __NR_open
+#define open_not_cancel(name, flags, mode) \
+	INLINE_SYSCALL (openat, 4, AT_FDCWD, (const char *) (name), \
+		(flags), (mode))
+#define open_not_cancel_2(name, flags) \
+	INLINE_SYSCALL (openat, 3, AT_FDCWD, (const char *) (name), \
+		(flags))
+#else
 #define open_not_cancel(name, flags, mode) \
    INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode))
 #define open_not_cancel_2(name, flags) \
    INLINE_SYSCALL (open, 2, (const char *) (name), (flags))
+#endif
 
 /* Uncancelable openat.  */
 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt

libpthread/linuxthreads/sysdeps/pthread/not-cancel.h

@@ -21,10 +21,19 @@
 #include <sysdep.h>
 
 /* Uncancelable open.  */
+#if defined __NR_openat && !defined __NR_open
+#define open_not_cancel(name, flags, mode) \
+	INLINE_SYSCALL (openat, 4, (int) (AT_FDCWD), (const char *) (name), \
+		(flags), (mode))
+#define open_not_cancel_2(name, flags) \
+	INLINE_SYSCALL (openat, 3, (int) (AT_FDCWD), (const char *) (name), \
+		(flags))
+#else
 #define open_not_cancel(name, flags, mode) \
    INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode))
 #define open_not_cancel_2(name, flags) \
    INLINE_SYSCALL (open, 2, (const char *) (name), (flags))
+#endif
 
 /* Uncancelable openat.  */
 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt

libpthread/nptl/sysdeps/unix/sysv/linux/not-cancel.h

@@ -21,10 +21,19 @@
 #include <sysdep.h>
 
 /* Uncancelable open.  */
+#if defined __NR_openat && !defined __NR_open
+#define open_not_cancel(name, flags, mode) \
+	INLINE_SYSCALL (openat, 4, AT_FDCWD, (const char *) (name), \
+		(flags), (mode))
+#define open_not_cancel_2(name, flags) \
+	INLINE_SYSCALL (openat, 3, AT_FDCWD, (const char *) (name), \
+		(flags))
+#else
 #define open_not_cancel(name, flags, mode) \
    INLINE_SYSCALL (open, 3, (const char *) (name), (flags), (mode))
 #define open_not_cancel_2(name, flags) \
    INLINE_SYSCALL (open, 2, (const char *) (name), (flags))
+#endif
 
 /* Uncancelable openat.  */
 #if !defined NOT_IN_libc || defined IS_IN_libpthread || defined IS_IN_librt