openat: port to AIX 7.1 with large files

[gnulib.git] / ChangeLog

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+2011-09-05  Paul Eggert  <eggert@cs.ucla.edu>
+
+       openat: port to AIX 7.1 with large files
+       AIX 7.1 does a "#define openat open64at" if large files are in use,
+       so we can't simply #undef openat.  Use the orig_openat trick (similar
+       to orig_open in lib/open.c) to work around the problem.  Problem
+       reported by Kevin Brott for GNU tar, in the thread containing
+       <http://lists.gnu.org/archive/html/bug-tar/2011-09/msg00032.html>.
+       * lib/openat.c (__need_system_fcntl_h): Define first.
+       Include <fcntl.h> and <sys/types.h> before undefining.
+       (orig_openat) [HAVE_OPENAT]: New inline function.
+       (openat) [HAVE_OPENAT]: Do not undef.
+       (rpl_openat): Use orig_openat, not openat.
+
 2011-09-03  Paul Eggert  <eggert@cs.ucla.edu>
 
        openat: test for fstatat (..., 0) bug