openat: declare in POSIX headers

[gnulib.git] / lib / fcntl.in.h

diff --git a/lib/fcntl.in.h b/lib/fcntl.in.h
index 5c63afd..6c88b47 100644 (file)
--- a/lib/fcntl.in.h
+++ b/lib/fcntl.in.h
@@ -44,6 +44,9 @@
 #define _GL_FCNTL_H
 
 
+/* The definition of GL_LINK_WARNING is copied here.  */
+
+
 /* Declare overridden functions.  */
 
 #ifdef __cplusplus
@@ -58,6 +61,20 @@ extern int open (const char *filename, int flags, ...);
 # endif
 #endif
 
+#if @GNULIB_OPENAT@
+# if !@HAVE_OPENAT@
+#  undef openat
+#  define openat rpl_openat
+int openat (int fd, char const *file, int flags, /* mode_t mode */ ...);
+# endif
+#elif defined GNULIB_POSIXCHECK
+# undef openat
+# define openat(f,u,g) \
+    (GL_LINK_WARNING ("openat is not portable - " \
+                      "use gnulib module openat for portability"), \
+     openat)
+#endif
+
 #ifdef __cplusplus
 }
 #endif
@@ -148,6 +165,33 @@ extern int open (const char *filename, int flags, ...);
 # define O_TEXT 0
 #endif
 
+/* Fix up the AT_* macros.  */
+
+/* Work around a bug in Solaris 9 and 10: AT_FDCWD is positive.  Its
+   value exceeds INT_MAX, so its use as an int doesn't conform to the
+   C standard, and GCC and Sun C complain in some cases.  If the bug
+   is present, undef AT_FDCWD here, so it can be redefined below.  */
+#if 0 < AT_FDCWD && AT_FDCWD == 0xffd19553
+# undef AT_FDCWD
+#endif
+
+/* Use the same bit pattern as Solaris 9, but with the proper
+   signedness.  The bit pattern is important, in case this actually is
+   Solaris with the above workaround.  */
+#ifndef AT_FDCWD
+# define AT_FDCWD (-3041965)
+#endif
+
+/* Use the same values as Solaris 9.  This shouldn't matter, but
+   there's no real reason to differ.  */
+#ifndef AT_SYMLINK_NOFOLLOW
+# define AT_SYMLINK_NOFOLLOW 4096
+#endif
+
+#ifndef AT_REMOVEDIR
+# define AT_REMOVEDIR 1
+#endif
+
 
 #endif /* _GL_FCNTL_H */
 #endif /* _GL_FCNTL_H */