diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc
index 161c061a1742..6d0e542a1f7b 100644
--- a/lib/libc/gen/Makefile.inc
+++ b/lib/libc/gen/Makefile.inc
@@ -1,581 +1,582 @@
 #	@(#)Makefile.inc	8.6 (Berkeley) 5/4/95
 # $FreeBSD$
 
 # machine-independent gen sources
 .PATH: ${LIBC_SRCTOP}/${LIBC_ARCH}/gen ${LIBC_SRCTOP}/gen ${SRCTOP}/etc
 
 CONFS+=	group master.passwd shells
 CONFSMODE_master.passwd=	600
 CONFSPACKAGE=   runtime
 
 SRCS+=	__getosreldate.c \
 	__pthread_mutex_init_calloc_cb_stub.c \
 	__xuname.c \
 	_once_stub.c \
 	_pthread_stubs.c \
 	_rand48.c \
 	_spinlock_stub.c \
 	_thread_init.c \
 	alarm.c \
 	arc4random.c \
 	arc4random-compat.c \
 	arc4random_uniform.c \
 	assert.c \
 	auxv.c \
 	basename.c \
 	basename_compat.c \
 	cap_sandboxed.c \
 	check_utility_compat.c \
 	clock.c \
 	clock_getcpuclockid.c \
 	closedir.c \
 	confstr.c \
 	cpuset_alloc.c \
 	cpuset_free.c \
 	crypt.c \
 	ctermid.c \
 	daemon.c \
 	devname.c \
 	devname-compat11.c \
 	dirfd.c \
 	dirname.c \
 	dirname_compat.c \
 	disklabel.c \
 	dlfcn.c \
 	drand48.c \
 	dup3.c \
 	elf_utils.c \
 	erand48.c \
 	err.c \
 	errlst.c \
 	errno.c \
 	eventfd.c \
 	exec.c \
 	exect.c \
 	fdevname.c \
 	feature_present.c \
 	fmtcheck.c \
 	fmtmsg.c \
 	fnmatch.c \
 	fpclassify.c \
 	frexp.c \
 	fstab.c \
 	ftok.c \
 	fts.c \
 	fts-compat.c \
 	fts-compat11.c \
 	ftw.c \
 	ftw-compat11.c \
 	getbootfile.c \
 	getbsize.c \
 	getcap.c \
 	getcwd.c \
 	getdomainname.c \
 	getentropy.c \
 	getgrent.c \
 	getgrouplist.c \
 	gethostname.c \
 	getloadavg.c \
 	getlogin.c \
 	getmntinfo.c \
 	getmntinfo-compat11.c \
 	getnetgrent.c \
 	getosreldate.c \
 	getpagesize.c \
 	getpagesizes.c \
 	getpeereid.c \
 	getprogname.c \
 	getpwent.c \
 	getttyent.c \
 	getusershell.c \
 	getutxent.c \
 	getvfsbyname.c \
 	glob.c \
 	glob-compat11.c \
 	initgroups.c \
 	isatty.c \
 	isinf.c \
 	isnan.c \
 	jrand48.c \
 	lcong48.c \
 	libc_dlopen.c \
 	lockf.c \
 	lrand48.c \
 	memalign.c \
 	mrand48.c \
 	nftw.c \
 	nftw-compat11.c \
 	nice.c \
 	nlist.c \
 	nrand48.c \
 	opendir.c \
 	pause.c \
 	pmadvise.c \
 	popen.c \
 	posix_spawn.c \
 	psignal.c \
 	pututxline.c \
 	pw_scan.c \
 	raise.c \
 	readdir.c \
 	readdir-compat11.c \
 	readpassphrase.c \
 	recvmmsg.c \
 	rewinddir.c \
 	scandir.c \
 	scandir_b.c \
 	scandir-compat11.c \
 	sched_getaffinity.c \
 	sched_setaffinity.c \
 	seed48.c \
 	seekdir.c \
 	semctl.c \
 	sendmmsg.c \
 	setdomainname.c \
 	sethostname.c \
 	setjmperr.c \
 	setmode.c \
 	setproctitle.c \
 	setprogname.c \
 	siginterrupt.c \
 	siglist.c \
 	signal.c \
 	sigsetops.c \
 	sleep.c \
 	srand48.c \
 	statvfs.c \
 	stringlist.c \
 	strtofflags.c \
 	sysconf.c \
 	sysctl.c \
 	sysctlbyname.c \
 	sysctlnametomib.c \
 	syslog.c \
 	telldir.c \
 	termios.c \
 	time.c \
 	times.c \
 	timespec_get.c \
 	timezone.c \
 	tls.c \
 	ttyname.c \
 	ttyslot.c \
 	ualarm.c \
 	ulimit.c \
 	uname.c \
 	unvis-compat.c \
 	usleep.c \
 	utime.c \
 	utxdb.c \
 	valloc.c \
 	wait.c \
 	wait3.c \
 	waitpid.c \
 	waitid.c \
 	wordexp.c
 
 CFLAGS.arc4random.c= -I${SRCTOP}/sys -I${SRCTOP}/sys/crypto/chacha20
 
 CFLAGS.dlfcn.c= ${RTLD_HDRS}
 CFLAGS.tls.c= ${RTLD_HDRS}
 
 .PATH: ${SRCTOP}/contrib/libc-pwcache
 SRCS+=	pwcache.c pwcache.h
 
 .PATH: ${SRCTOP}/contrib/libc-vis
 CFLAGS+=	-I${SRCTOP}/contrib/libc-vis
 SRCS+=	unvis.c vis.c
 
 MISRCS+=modf.c
 
 CANCELPOINTS_SRCS=sem.c sem_new.c
 .for src in ${CANCELPOINTS_SRCS}
 SRCS+=cancelpoints_${src}
 CLEANFILES+=cancelpoints_${src}
 cancelpoints_${src}: ${LIBC_SRCTOP}/gen/${src} .NOMETA
 	ln -sf ${.ALLSRC} ${.TARGET}
 .endfor
 
 SYM_MAPS+=${LIBC_SRCTOP}/gen/Symbol.map
 
 # machine-dependent gen sources
 .sinclude "${LIBC_SRCTOP}/${LIBC_ARCH}/gen/Makefile.inc"
 
 MAN+=	alarm.3 \
 	arc4random.3 \
 	auxv.3 \
 	basename.3 \
 	cap_rights_get.3 \
 	cap_sandboxed.3 \
 	check_utility_compat.3 \
 	clock.3 \
 	clock_getcpuclockid.3 \
 	confstr.3 \
 	ctermid.3 \
 	daemon.3 \
 	devname.3 \
 	directory.3 \
 	dirname.3 \
 	dl_iterate_phdr.3 \
 	dladdr.3 \
 	dlinfo.3 \
 	dllockinit.3 \
 	dlopen.3 \
 	dup3.3 \
 	err.3 \
 	exec.3 \
 	feature_present.3 \
 	fmtcheck.3 \
 	fmtmsg.3 \
 	fnmatch.3 \
 	fpclassify.3 \
 	frexp.3 \
 	ftok.3 \
 	fts.3 \
 	ftw.3 \
 	getbootfile.3 \
 	getbsize.3 \
 	getcap.3 \
 	getcontext.3 \
 	getcwd.3 \
 	getdiskbyname.3 \
 	getdomainname.3 \
 	getentropy.3 \
 	getfsent.3 \
 	getgrent.3 \
 	getgrouplist.3 \
 	gethostname.3 \
 	getloadavg.3 \
 	getmntinfo.3 \
 	getnetgrent.3 \
 	getosreldate.3 \
 	getpagesize.3 \
 	getpagesizes.3 \
 	getpass.3 \
 	getpeereid.3 \
 	getprogname.3 \
 	getpwent.3 \
 	getttyent.3 \
 	getusershell.3 \
 	getutxent.3 \
 	getvfsbyname.3 \
 	glob.3 \
 	initgroups.3 \
 	isgreater.3 \
 	ldexp.3 \
 	lockf.3 \
 	makecontext.3 \
 	modf.3 \
 	nice.3 \
 	nlist.3 \
 	pause.3 \
 	popen.3 \
 	posix_spawn.3 \
 	posix_spawn_file_actions_addopen.3 \
 	posix_spawn_file_actions_init.3 \
 	posix_spawnattr_getflags.3 \
 	posix_spawnattr_getpgroup.3 \
 	posix_spawnattr_getschedparam.3 \
 	posix_spawnattr_getschedpolicy.3 \
 	posix_spawnattr_init.3 \
 	posix_spawnattr_getsigdefault.3 \
 	posix_spawnattr_getsigmask.3 \
 	psignal.3 \
 	pwcache.3 \
 	raise.3 \
 	rand48.3 \
 	readpassphrase.3 \
 	rfork_thread.3 \
 	scandir.3 \
 	sem_destroy.3 \
 	sem_getvalue.3 \
 	sem_init.3 \
 	sem_open.3 \
 	sem_post.3 \
 	sem_timedwait.3 \
 	sem_wait.3 \
 	setjmp.3 \
 	setmode.3 \
 	setproctitle.3 \
 	siginterrupt.3 \
 	signal.3 \
 	sigsetops.3 \
 	sleep.3 \
 	statvfs.3 \
 	stringlist.3 \
 	strtofflags.3 \
 	sysconf.3 \
 	sysctl.3 \
 	syslog.3 \
 	tcgetpgrp.3 \
 	tcgetsid.3 \
 	tcgetwinsize.3 \
 	tcsendbreak.3 \
 	tcsetattr.3 \
 	tcsetpgrp.3 \
 	tcsetsid.3 \
 	time.3 \
 	times.3 \
 	timespec_get.3 \
 	timezone.3 \
 	ttyname.3 \
 	tzset.3 \
 	ualarm.3 \
 	ucontext.3 \
 	ulimit.3 \
 	uname.3 \
 	unvis.3 \
 	usleep.3 \
 	utime.3 \
 	valloc.3 \
 	vis.3 \
 	wordexp.3
 
 MLINKS+=arc4random.3 arc4random_buf.3 \
 	arc4random.3 arc4random_uniform.3
 MLINKS+=auxv.3 elf_aux_info.3
 MLINKS+=ctermid.3 ctermid_r.3
 MLINKS+=daemon.3 daemonfd.3
 MLINKS+=devname.3 devname_r.3
 MLINKS+=devname.3 fdevname.3
 MLINKS+=devname.3 fdevname_r.3
 MLINKS+=directory.3 closedir.3 \
 	directory.3 dirfd.3 \
 	directory.3 fdclosedir.3 \
 	directory.3 fdopendir.3 \
 	directory.3 opendir.3 \
 	directory.3 readdir.3 \
 	directory.3 readdir_r.3 \
 	directory.3 rewinddir.3 \
 	directory.3 seekdir.3 \
 	directory.3 telldir.3
 MLINKS+=dlopen.3 fdlopen.3 \
 	dlopen.3 dlclose.3 \
 	dlopen.3 dlerror.3 \
 	dlopen.3 dlfunc.3 \
 	dlopen.3 dlsym.3 \
 	dlopen.3 dlvsym.3
 MLINKS+=err.3 err_set_exit.3 \
 	err.3 err_set_file.3 \
 	err.3 errc.3 \
 	err.3 errx.3 \
 	err.3 verr.3 \
 	err.3 verrc.3 \
 	err.3 verrx.3 \
 	err.3 vwarn.3 \
 	err.3 vwarnc.3 \
 	err.3 vwarnx.3 \
 	err.3 warnc.3 \
 	err.3 warn.3 \
 	err.3 warnx.3
 MLINKS+=exec.3 execl.3 \
 	exec.3 execle.3 \
 	exec.3 execlp.3 \
 	exec.3 exect.3 \
 	exec.3 execv.3 \
 	exec.3 execvP.3 \
 	exec.3 execvp.3
 MLINKS+=fpclassify.3 finite.3 \
 	fpclassify.3 finitef.3 \
 	fpclassify.3 isfinite.3 \
 	fpclassify.3 isinf.3 \
 	fpclassify.3 isnan.3 \
 	fpclassify.3 isnormal.3
 MLINKS+=frexp.3 frexpf.3 \
 	frexp.3 frexpl.3
 MLINKS+=fts.3 fts_children.3 \
 	fts.3 fts_close.3 \
 	fts.3 fts_open.3 \
 	fts.3 fts_read.3 \
 	fts.3 fts_set.3 \
 	fts.3 fts_set_clientptr.3 \
 	fts.3 fts_get_clientptr.3 \
 	fts.3 fts_get_stream.3
 MLINKS+=ftw.3 nftw.3
 MLINKS+=getcap.3 cgetcap.3 \
 	getcap.3 cgetclose.3 \
 	getcap.3 cgetent.3 \
 	getcap.3 cgetfirst.3 \
 	getcap.3 cgetmatch.3 \
 	getcap.3 cgetnext.3 \
 	getcap.3 cgetnum.3 \
 	getcap.3 cgetset.3 \
 	getcap.3 cgetstr.3 \
 	getcap.3 cgetustr.3
 MLINKS+=getcwd.3 getwd.3
 MLINKS+=getcontext.3 getcontextx.3
 MLINKS+=getcontext.3 setcontext.3
 MLINKS+=getdomainname.3 setdomainname.3
 MLINKS+=getfsent.3 endfsent.3 \
 	getfsent.3 getfsfile.3 \
 	getfsent.3 getfsspec.3 \
 	getfsent.3 getfstype.3 \
 	getfsent.3 setfsent.3 \
 	getfsent.3 setfstab.3 \
 	getfsent.3 getfstab.3
 MLINKS+=getgrent.3 endgrent.3 \
 	getgrent.3 getgrgid.3 \
 	getgrent.3 getgrnam.3 \
 	getgrent.3 setgrent.3 \
 	getgrent.3 setgroupent.3 \
 	getgrent.3 getgrent_r.3 \
 	getgrent.3 getgrnam_r.3 \
 	getgrent.3 getgrgid_r.3
 MLINKS+=gethostname.3 sethostname.3
 MLINKS+=getnetgrent.3 endnetgrent.3 \
 	getnetgrent.3 getnetgrent_r.3 \
 	getnetgrent.3 innetgr.3 \
 	getnetgrent.3 setnetgrent.3
 MLINKS+=getprogname.3 setprogname.3
 MLINKS+=getpwent.3 endpwent.3 \
 	getpwent.3 getpwnam.3 \
 	getpwent.3 getpwuid.3 \
 	getpwent.3 setpassent.3 \
 	getpwent.3 setpwent.3 \
 	getpwent.3 setpwfile.3 \
 	getpwent.3 getpwent_r.3 \
 	getpwent.3 getpwnam_r.3 \
 	getpwent.3 getpwuid_r.3
 MLINKS+=getttyent.3 endttyent.3 \
 	getttyent.3 getttynam.3 \
 	getttyent.3 isdialuptty.3 \
 	getttyent.3 isnettty.3 \
 	getttyent.3 setttyent.3
 MLINKS+=getusershell.3 endusershell.3 \
 	getusershell.3 setusershell.3
 MLINKS+=getutxent.3 endutxent.3 \
 	getutxent.3 getutxid.3 \
 	getutxent.3 getutxline.3 \
 	getutxent.3 getutxuser.3 \
 	getutxent.3 pututxline.3 \
 	getutxent.3 setutxdb.3 \
 	getutxent.3 setutxent.3 \
 	getutxent.3 utmpx.3
 MLINKS+=glob.3 globfree.3
 MLINKS+=isgreater.3 isgreaterequal.3 \
 	isgreater.3 isless.3 \
 	isgreater.3 islessequal.3 \
 	isgreater.3 islessgreater.3 \
 	isgreater.3 isunordered.3
 MLINKS+=ldexp.3 ldexpf.3 \
 	ldexp.3 ldexpl.3
 MLINKS+=makecontext.3 swapcontext.3
 MLINKS+=modf.3 modff.3 \
 	modf.3 modfl.3
 MLINKS+=popen.3 pclose.3
 MLINKS+=posix_spawn.3 posix_spawnp.3 \
 	posix_spawn_file_actions_addopen.3 posix_spawn_file_actions_addclose.3 \
 	posix_spawn_file_actions_addopen.3 posix_spawn_file_actions_addclosefrom_np.3 \
 	posix_spawn_file_actions_addopen.3 posix_spawn_file_actions_adddup2.3 \
 	posix_spawn_file_actions_addopen.3 posix_spawn_file_actions_addchdir_np.3 \
 	posix_spawn_file_actions_addopen.3 posix_spawn_file_actions_addfchdir_np.3 \
 	posix_spawn_file_actions_init.3 posix_spawn_file_actions_destroy.3 \
 	posix_spawnattr_getflags.3 posix_spawnattr_setflags.3 \
 	posix_spawnattr_getpgroup.3 posix_spawnattr_setpgroup.3 \
 	posix_spawnattr_getschedparam.3 posix_spawnattr_setschedparam.3 \
 	posix_spawnattr_getschedpolicy.3 posix_spawnattr_setschedpolicy.3 \
 	posix_spawnattr_getsigdefault.3 posix_spawnattr_setsigdefault.3 \
 	posix_spawnattr_getsigmask.3 posix_spawnattr_setsigmask.3 \
 	posix_spawnattr_init.3 posix_spawnattr_destroy.3
 MLINKS+=psignal.3 strsignal.3 \
 	psignal.3 sys_siglist.3 \
 	psignal.3 sys_signame.3
 MLINKS+=pwcache.3 group_from_gid.3 \
 	pwcache.3 user_from_uid.3
 MLINKS+=rand48.3 _rand48.3 \
 	rand48.3 drand48.3 \
 	rand48.3 erand48.3 \
 	rand48.3 jrand48.3 \
 	rand48.3 lcong48.3 \
 	rand48.3 lrand48.3 \
 	rand48.3 mrand48.3 \
 	rand48.3 nrand48.3 \
 	rand48.3 seed48.3 \
 	rand48.3 srand48.3
 MLINKS+=recv.2 recvmmsg.2
 MLINKS+=scandir.3 alphasort.3 \
+	scandir.3 scandirat.3 \
 	scandir.3 scandir_b.3
 MLINKS+=sem_open.3 sem_close.3 \
 	sem_open.3 sem_unlink.3
 MLINKS+=sem_wait.3 sem_trywait.3
 MLINKS+=sem_timedwait.3 sem_clockwait_np.3
 MLINKS+=send.2 sendmmsg.2
 MLINKS+=setjmp.3 _longjmp.3 \
 	setjmp.3 _setjmp.3 \
 	setjmp.3 longjmp.3 \
 	setjmp.3 longjmperr.3 \
 	setjmp.3 longjmperror.3 \
 	setjmp.3 siglongjmp.3 \
 	setjmp.3 sigsetjmp.3
 MLINKS+=setmode.3 getmode.3
 MLINKS+=setproctitle.3 setproctitle_fast.3
 MLINKS+=sigsetops.3 sigaddset.3 \
 	sigsetops.3 sigandset.3 \
 	sigsetops.3 sigdelset.3 \
 	sigsetops.3 sigemptyset.3 \
 	sigsetops.3 sigfillset.3 \
 	sigsetops.3 sigisemptyset.3 \
 	sigsetops.3 sigismember.3 \
 	sigsetops.3 sigorset.3
 MLINKS+=statvfs.3 fstatvfs.3
 MLINKS+=stringlist.3 sl_add.3 \
 	stringlist.3 sl_find.3 \
 	stringlist.3 sl_free.3 \
 	stringlist.3 sl_init.3
 MLINKS+=strtofflags.3 fflagstostr.3
 MLINKS+=sysctl.3 sysctlbyname.3 \
 	sysctl.3 sysctlnametomib.3
 MLINKS+=syslog.3 closelog.3 \
 	syslog.3 openlog.3 \
 	syslog.3 setlogmask.3 \
 	syslog.3 vsyslog.3
 MLINKS+=tcgetwinsize.3 tcsetwinsize.3
 MLINKS+=tcsendbreak.3 tcdrain.3 \
 	tcsendbreak.3 tcflow.3 \
 	tcsendbreak.3 tcflush.3
 MLINKS+=tcsetattr.3 cfgetispeed.3 \
 	tcsetattr.3 cfgetospeed.3 \
 	tcsetattr.3 cfmakeraw.3 \
 	tcsetattr.3 cfmakesane.3 \
 	tcsetattr.3 cfsetispeed.3 \
 	tcsetattr.3 cfsetospeed.3 \
 	tcsetattr.3 cfsetspeed.3 \
 	tcsetattr.3 tcgetattr.3
 MLINKS+=ttyname.3 isatty.3 \
 	ttyname.3 ttyname_r.3
 MLINKS+=tzset.3 tzsetwall.3
 MLINKS+=unvis.3 strunvis.3 \
 	unvis.3 strunvisx.3
 MLINKS+=vis.3 nvis.3 \
 	vis.3 snvis.3 \
 	vis.3 strenvisx.3 \
 	vis.3 strnunvis.3 \
 	vis.3 strnunvisx.3 \
 	vis.3 strnvis.3 \
 	vis.3 strnvisx.3 \
 	vis.3 strsenvisx.3 \
 	vis.3 strsnvis.3 \
 	vis.3 strsnvisx.3 \
 	vis.3 strsvis.3 \
 	vis.3 strsvisx.3 \
 	vis.3 strvis.3 \
 	vis.3 strvisx.3 \
 	vis.3 svis.3
 
 MLINKS+=wordexp.3 wordfree.3
 
 .include <src.tools.mk>
 
 afterinstallconfig: install-passwd
 install-passwd: .PHONY
 .if ${MK_TCSH} == "no"
 	sed -i "" -e 's;/bin/csh;/bin/sh;' ${DESTDIR}/etc/master.passwd
 .endif
 	${PWD_MKDB_CMD} -i -p -d ${DESTDIR}/etc ${DESTDIR}/etc/master.passwd
 .if defined(NO_ROOT) && defined(METALOG)
 	( \
 		echo ".${DISTBASE}/etc/pwd.db type=file mode=0644 uname=root gname=wheel"; \
 		echo ".${DISTBASE}/etc/spwd.db type=file mode=0600 uname=root gname=wheel"; \
 		echo ".${DISTBASE}/etc/passwd type=file mode=0644 uname=root gname=wheel"; \
 	) | cat -l >> ${METALOG}
 .endif
diff --git a/lib/libc/gen/scandir.3 b/lib/libc/gen/scandir.3
index 47057fc647fc..b533b33ce7a7 100644
--- a/lib/libc/gen/scandir.3
+++ b/lib/libc/gen/scandir.3
@@ -1,128 +1,175 @@
 .\" Copyright (c) 1983, 1991, 1993
 .\"	The Regents of the University of California.  All rights reserved.
 .\"
 .\" Redistribution and use in source and binary forms, with or without
 .\" modification, are permitted provided that the following conditions
 .\" are met:
 .\" 1. Redistributions of source code must retain the above copyright
 .\"    notice, this list of conditions and the following disclaimer.
 .\" 2. Redistributions in binary form must reproduce the above copyright
 .\"    notice, this list of conditions and the following disclaimer in the
 .\"    documentation and/or other materials provided with the distribution.
 .\" 3. Neither the name of the University nor the names of its contributors
 .\"    may be used to endorse or promote products derived from this software
 .\"    without specific prior written permission.
 .\"
 .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 .\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
 .\"     @(#)scandir.3	8.1 (Berkeley) 6/4/93
 .\" $FreeBSD$
 .\"
-.Dd January 3, 2010
+.Dd August 23, 2022
 .Dt SCANDIR 3
 .Os
 .Sh NAME
 .Nm scandir ,
+.Nm scandirat ,
 .Nm scandir_b ,
 .Nm alphasort
 .Nd scan a directory
 .Sh LIBRARY
 .Lb libc
 .Sh SYNOPSIS
 .In dirent.h
 .Ft int
 .Fo scandir
 .Fa "const char *dirname"
 .Fa "struct dirent ***namelist"
 .Fa "int \*(lp*select\*(rp\*(lpconst struct dirent *\*(rp"
 .Fa "int \*(lp*compar\*(rp\*(lpconst struct dirent **, const struct dirent **\*(rp"
 .Fc
+.Ft
+.Fo scandirat
+.Fa int dirfd
+.Fa "const char *dirname"
+.Fa "struct dirent ***namelist"
+.Fa "int \*(lp*select\*(rp\*(lpconst struct dirent *\*(rp"
+.Fa "int \*(lp*compar\*(rp\*(lpconst struct dirent **, const struct dirent **\*(rp"
+.Fc
 .Ft int
 .Fo scandir_b
 .Fa "const char *dirname"
 .Fa "struct dirent ***namelist"
 .Fa "int \*(lp*select\^(rp\*(lpconst struct dirent *\*(rp"
 .Fa "int \*(lp^compar\*(rp\*(lpconst struct dirent **, const struct dirent **\*(rp"
 .Fc
 .Ft int
 .Fn alphasort "const struct dirent **d1" "const struct dirent **d2"
 .Sh DESCRIPTION
 The
 .Fn scandir
 function
 reads the directory
 .Fa dirname
 and builds an array of pointers to directory
 entries using
 .Xr malloc 3 .
 It returns the number of entries in the array.
 A pointer to the array of directory entries is stored in the location
 referenced by
 .Fa namelist .
 .Pp
 The
 .Fa select
 argument is a pointer to a user supplied subroutine which is called by
 .Fn scandir
 to select which entries are to be included in the array.
 The select routine is passed a
 pointer to a directory entry and should return a non-zero
 value if the directory entry is to be included in the array.
 If
 .Fa select
 is null, then all the directory entries will be included.
 .Pp
 The
 .Fa compar
 argument is a pointer to a user supplied subroutine which is passed to
 .Xr qsort 3
 to sort the completed array.
 If this pointer is null, the array is not sorted.
 .Pp
 The
 .Fn alphasort
 function
 is a routine which can be used for the
 .Fa compar
 argument to sort the array alphabetically using
 .Xr strcoll 3 .
 .Pp
 The memory allocated for the array can be deallocated with
 .Xr free 3 ,
 by freeing each pointer in the array and then the array itself.
 .Pp
 The
+.Fn scandirat
+function is similar to
+.Fn scandir ,
+but takes an additional
+.Fa dirfd
+argument.
+If the supplied
+.Fa dirname
+is absolute, the function's behavior is identical to that of
+.Fn scandir ,
+the
+.Fa dirfd
+argument is unused.
+If
+.Fa dirname
+is relative,
+.Fa dirfd
+must be a valid file descriptor referencing a directory, in
+which case the
+.Fa dirname
+lookup is performed relative to the directory referenced by
+.Fa dirfd .
+If
+.Fa dirfd
+has the special value
+.Va AT_FDCWD ,
+then the current process directory is used as the base for
+relative lookups.
+See
+.Xr openat 2
+for additional details.
+.Pp
+The
 .Fn scandir_b
 function behaves in the same way as
 .Fn scandir ,
 but takes blocks as arguments instead of function pointers and calls
 .Fn qsort_b
 rather than
 .Fn qsort .
 .Sh DIAGNOSTICS
 Returns \-1 if the directory cannot be opened for reading or if
 .Xr malloc 3
 cannot allocate enough memory to hold all the data structures.
 .Sh SEE ALSO
+.Xr openat 2 ,
 .Xr directory 3 ,
 .Xr malloc 3 ,
 .Xr qsort 3 ,
 .Xr strcoll 3 ,
 .Xr dir 5
 .Sh HISTORY
 The
 .Fn scandir
 and
 .Fn alphasort
 functions appeared in
 .Bx 4.2 .
+The
+.Fn scandirat
+function was added in
+.Fx 14.0 .