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4ddd4acf04
Allow fchmodat with the AT_SYMLINK_NOFOLLOW flag to succeed on non-symlinks. Previously it always failed, as it does on Linux. But POSIX permits it to succeed on non-symlinks even if it fails on symlinks. The reason for following POSIX rather than Linux is to make gnulib report that fchmodat works on Cygwin. This improves the efficiency of packages like GNU tar that use gnulib's fchmodat module. Previously such packages would use a gnulib replacement for fchmodat on Cygwin.
THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Cygwin documentation is available on the net at https://cygwin.com You might especially be interested in https://cygwin.com/faq/faq.html#faq.programming.building-cygwin