add hidden aliases for openat funcs

openat64() uses openat(), so we need hidden aliases for it.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>

include/fcntl.h

@@ -123,6 +123,7 @@ libc_hidden_proto(open64)
 # ifndef __USE_FILE_OFFSET64
 extern int openat (int __fd, __const char *__file, int __oflag, ...)
      __nonnull ((2));
+libc_hidden_proto(openat)
 # else
 #  ifdef __REDIRECT
 extern int __REDIRECT (openat, (int __fd, __const char *__file, int __oflag,
@@ -134,6 +135,7 @@ extern int __REDIRECT (openat, (int __fd, __const char *__file, int __oflag,
 
 extern int openat64 (int __fd, __const char *__file, int __oflag, ...)
      __nonnull ((2));
+libc_hidden_proto(openat64)
 #endif
 
 /* Create and open FILE, with mode MODE.  This takes an `int' MODE

libc/sysdeps/linux/common/openat.c

@@ -12,7 +12,14 @@
 #undef openat
 
 #ifdef __NR_openat
+/* The openat() prototype is varargs based, but we don't care about that
+ * here, so need to provide our own dedicated signature.
+ */
+extern int openat(int fd, const char *file, int oflag, mode_t mode);
+libc_hidden_proto(openat)
+
 _syscall4(int, openat, int, fd, const char *, file, int, oflag, mode_t, mode)
+libc_hidden_def(openat)
 #else
 /* should add emulation with open() and /proc/self/fd/ ... */
 #endif

libc/sysdeps/linux/common/openat64.c

@@ -14,10 +14,17 @@
 #ifdef __UCLIBC_HAS_LFS__
 
 #ifdef __NR_openat
+/* The openat() prototype is varargs based, but we don't care about that
+ * here, so need to provide our own dedicated signature.
+ */
+extern int openat64(int fd, const char *file, int oflag, mode_t mode);
+libc_hidden_proto(openat64)
+
 int openat64(int fd, const char *file, int oflag, mode_t mode)
 {
 	return openat(fd, file, oflag | O_LARGEFILE, mode);
 }
+libc_hidden_def(openat64)
 #else
 /* should add emulation with open() and /proc/self/fd/ ... */
 #endif