Date: Mon, 6 Apr 1998 10:57:11 -0700 (PDT) From: Sean Eric Fagan <sef@kithrup.com> To: peter@FreeBSD.ORG Cc: committers@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern vfs_vnops.c src/sys/sys fcntl.h Message-ID: <199804061757.KAA14158@kithrup.com> In-Reply-To: <199804061738.KAA02766.kithrup.freebsd.cvs-all@freefall.freebsd.org>
next in thread | previous in thread | raw e-mail | index | archive | help
In article <199804061738.KAA02766.kithrup.freebsd.cvs-all@freefall.freebsd.org> you write: > sys/kern vfs_vnops.c > sys/sys fcntl.h > Log: > Implement a new open(2) flag: O_NOFOLLOW. This will instruct open > to not follow symlinks, but to open a handle on the link itself(!). > As strange as this might sound, it has several useful applications > safe race-free ways of opening files in hostile areas (eg: /tmp, a mode > 1777 /var/mail, etc). It also would allow things like fchown() to work > on the link rather than having to implement a new syscall specifically for > that task. This is not a good change. Sorry. It should be backed out. I can think of lots of reasons -- off the top of my head, it looks like it's going to be fairly intrusive -- but the best reason I can think of is: we're going to have to do a new syscall anyway, since other OSes do, and we try to be compatible with them. E.g., NetBSD has an lchown() system call. Then there's the issue of standards: lchown() and lchmod() are fairly standard now (having first been implemented over seven years ago). Doing it any other way is, I am afraid, cumbersome and conflicting. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199804061757.KAA14158>