Date: Fri, 26 Jun 2020 22:05:23 +0000 (UTC) From: Warner Losh <imp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362664 - head/lib/libc/sys Message-ID: <202006262205.05QM5N5Q066700@repo.freebsd.org>
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Author: imp Date: Fri Jun 26 22:05:23 2020 New Revision: 362664 URL: https://svnweb.freebsd.org/changeset/base/362664 Log: Chroot actually appeared in 7th Edition Unix. Chroot appeared during the development of 7th edition Unix. The FreeBSD jail documents, incorrectly, that Bill Joy added this to 4.2BSD on 18 March 1982. That was when Bill Joy converted from a statically coded system call glue to dynamically generated assembler. Chroot was present in 32V, 3BSD, 4.0BSD, 4.1BSD and 4.1cBSD well in advance of this. Kirk McKusick agrees with this analysis. See also: V7: https://minnie.tuhs.org/cgi-bin/utree.pl?file=V7/usr/src/libc/sys/chroot.s 32V: https://minnie.tuhs.org/cgi-bin/utree.pl?file=32V/usr/src/libc/sys/chroot.s 3BSD: https://minnie.tuhs.org/cgi-bin/utree.pl?file=3BSD/usr/src/libc/sys/chroot.s 4BSD: https://minnie.tuhs.org/cgi-bin/utree.pl?file=4BSD/usr/src/libc/sys/chroot.s 4.1cBSD: https://minnie.tuhs.org/cgi-bin/utree.pl?file=4.1cBSD/usr/src/libc/sys/chroot.s The 6th and earlier editions do not have this system call, nor do they have anything named chroot in the trees available from TUHS. Reviewed by: allanjude@ Differential Revision: https://reviews.freebsd.org/D25475 Modified: head/lib/libc/sys/chroot.2 Modified: head/lib/libc/sys/chroot.2 ============================================================================== --- head/lib/libc/sys/chroot.2 Fri Jun 26 21:21:35 2020 (r362663) +++ head/lib/libc/sys/chroot.2 Fri Jun 26 22:05:23 2020 (r362664) @@ -28,7 +28,7 @@ .\" @(#)chroot.2 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd March 30, 2020 +.Dd June 26, 2020 .Dt CHROOT 2 .Os .Sh NAME @@ -131,7 +131,7 @@ Corrupted data was detected while reading from the fil The .Fn chroot system call appeared in -.Bx 4.2 . +.At v7 . It was marked as .Dq legacy in
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