-# serial 1
+# serial 3
# See if we need to provide utimensat replacement.
-dnl Copyright (C) 2009 Free Software Foundation, Inc.
+dnl Copyright (C) 2009, 2010 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
[AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <fcntl.h>
#include <sys/stat.h>
+#include <unistd.h>
+]], [[struct timespec ts[2] = { { 1, UTIME_OMIT }, { 1, UTIME_NOW } };
+ struct stat st;
+ const char *f = "conftest.file";
+ if (close (creat (f, 0600))) return 1;
+ if (utimensat (AT_FDCWD, f, NULL, AT_SYMLINK_NOFOLLOW)) return 2;
+ if (utimensat (AT_FDCWD, f, ts, 0)) return 3;
+ sleep (1);
+ ts[0].tv_nsec = UTIME_NOW;
+ ts[1].tv_nsec = UTIME_OMIT;
+ if (utimensat (AT_FDCWD, f, ts, 0)) return 4;
+ if (stat (f, &st)) return 5;
+ if (st.st_ctime < st.st_atime) return 6;]])],
+dnl FIXME: simplify this in 2012, when file system bugs are no longer common
+ [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#ifdef __linux__
-/* The Linux kernel added utimensat in 2.6.22, but it had bugs until 2.6.26.
- Always replace utimensat to support older kernels. */
+/* The Linux kernel added utimensat in 2.6.22, but has bugs with UTIME_OMIT
+ in several file systems as recently as 2.6.32. Always replace utimensat
+ to support older kernels. */
choke me
#endif
-]], [[struct timespec ts[2] = { { 1, UTIME_OMIT }, { 1, UTIME_OMIT } };
- return utimensat (AT_FDCWD, ".", NULL, AT_SYMLINK_NOFOLLOW);]])],
- [gl_cv_func_utimensat_works=yes],
- [gl_cv_func_utimensat_works="needs runtime check"],
+ ]])],
+ [gl_cv_func_utimensat_works=yes],
+ [gl_cv_func_utimensat_works="needs runtime check"])],
+ [gl_cv_func_utimensat_works=no],
[gl_cv_func_utimensat_works="guessing no"])])
if test "$gl_cv_func_utimensat_works" != yes; then
REPLACE_UTIMENSAT=1