Subject: Re: fchroot(2) emulation ?
To: Todd Vierling <tv@pobox.com>
From: Jason Thorpe <thorpej@nas.nasa.gov>
List: port-sparc
Date: 12/13/1997 13:13:02
On Fri, 12 Dec 1997 08:40:37 -0500 (EST)
Todd Vierling <tv@pobox.com> wrote:
> [-current users note: I've seen fchroot on other OS'es; does the below
> function look sane enough to go in libcompat? It certainly doesn't *need*
> to be a syscall as far as I can tell.]
It needs to be a syscall in order to emulate that syscall on other systems.
>
> =====
>
> int fchroot(int fd) {
> int cfd;
> int rc = -1;
>
> if ((cfd = open(".", O_RDONLY)) >= 0) {
> if (fchdir(fd) == 0) {
> if (chroot(".") == 0)
> rc = 0;
> fchdir(cfd);
> }
> close(cfd);
> }
> return rc;
> }
>
> =====
> == Todd Vierling (Personal tv@pobox.com; Business tv@lucent.com)
> == Vierling's Axiom: The revolution won't be televised; it will be posted.
>
Jason R. Thorpe thorpej@nas.nasa.gov
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