faccessat, etc.: support AT_FDCWD-only use

[gnulib.git] / ChangeLog

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 2012-10-14  Paul Eggert  <eggert@cs.ucla.edu>
 
+       faccessat, etc.: support AT_FDCWD-only use
+       * lib/at-func.c: If GNULIB_SUPPORT_ONLY_AT_FDCWD, then support
+       this function only if its first argument is AT_FDCWD.
+       Emacs wants faccessat for AT_EACCESS but not for any first-arg
+       values other than AT_FDCWD, so it doesn't want all the openat
+       machinery with fchdir etc.
+       * modules/faccessat, modules/fchmodat, modules/fchownat (Files):
+       * modules/fstatat, modules/mkdirat, modules/openat (Files):
+       * modules/unlinkat (Files):
+       Remove lib/openat-priv.h, as at-internal supplies this file.
+       Removing this file here allows us to support programs like Emacs
+       that avoid at-internal.
+
        faccessat: speed up 'configure' on mainstream hosts
        * m4/faccessat.m4 (gl_PREREQ_FACCESSAT):
        Use AT_CHECK_FUNCS for 'access', not AC_CHECK_FUNCS_ONCE,