Allow GCC-built fortified code to run on a clang-built bionic.

Even though code built with clang won't be fully fortified
and won't contain calls to our various helpers, binaries built
with GCC will.

Change-Id: I389b2f1e22a3e89b22aadedc46397bf704f9ca79

1 files changed, 13 insertions, 11 deletions

diff --git a/libc/include/fcntl.h b/libc/include/fcntl.h
index f41cbcc35..ffbbd4742 100644
--- a/libc/include/fcntl.h
+++ b/libc/include/fcntl.h
@@ -46,15 +46,19 @@ extern int  unlinkat(int dirfd, const char *pathname, int flags);
 extern int  fcntl(int   fd, int   command, ...);
 extern int  creat(const char*  path, mode_t  mode);
 
-#if defined(__BIONIC_FORTIFY) && !defined(__clang__)
+#if defined(__BIONIC_FORTIFY)
+
+extern int __open_2(const char*, int);
+extern int __open_real(const char*, int, ...) __asm__(__USER_LABEL_PREFIX__ "open");
+extern int __openat_2(int, const char*, int);
+extern int __openat_real(int, const char*, int, ...) __asm__(__USER_LABEL_PREFIX__ "openat");
 __errordecl(__creat_missing_mode, "called with O_CREAT, but missing mode");
 __errordecl(__creat_too_many_args, "too many arguments");
-extern int __open_real(const char *pathname, int flags, ...)
-    __asm__(__USER_LABEL_PREFIX__ "open");
-extern int __open_2(const char *, int);
+
+#if !defined(__clang__)
 
 __BIONIC_FORTIFY_INLINE
-int open(const char *pathname, int flags, ...) {
+int open(const char* pathname, int flags, ...) {
     if (__builtin_constant_p(flags)) {
         if ((flags & O_CREAT) && __builtin_va_arg_pack_len() == 0) {
             __creat_missing_mode();  // compile time error
@@ -72,12 +76,8 @@ int open(const char *pathname, int flags, ...) {
     return __open_real(pathname, flags, __builtin_va_arg_pack());
 }
 
-extern int __openat_2(int, const char *, int);
-extern int __openat_real(int dirfd, const char *pathname, int flags, ...)
-    __asm__(__USER_LABEL_PREFIX__ "openat");
-
 __BIONIC_FORTIFY_INLINE
-int openat(int dirfd, const char *pathname, int flags, ...) {
+int openat(int dirfd, const char* pathname, int flags, ...) {
     if (__builtin_constant_p(flags)) {
         if ((flags & O_CREAT) && __builtin_va_arg_pack_len() == 0) {
             __creat_missing_mode();  // compile time error
@@ -95,7 +95,9 @@ int openat(int dirfd, const char *pathname, int flags, ...) {
     return __openat_real(dirfd, pathname, flags, __builtin_va_arg_pack());
 }
 
-#endif /* defined(__BIONIC_FORTIFY) && !defined(__clang__) */
+#endif /* !defined(__clang__) */
+
+#endif /* defined(__BIONIC_FORTIFY) */
 
 __END_DECLS