fchmodat(AT_SYMLINK_NOFOLLOW) should work for non-symlinksrefs #4448(cherry picked from commit aac447896b607c7eccfac468cdf60441015fd617)
PSARC 2010/235 POSIX 1003.1-2008 *at(2) syscalls6910251 need support for all POSIX.1-2008 *at(2) syscalls6964835 mknod(2) auditing omits the pathname for invalid arguments
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