diff options
| author | peter <peter@FreeBSD.org> | 1998-04-06 17:38:43 +0000 |
|---|---|---|
| committer | peter <peter@FreeBSD.org> | 1998-04-06 17:38:43 +0000 |
| commit | d5ab1c3759352a4180dfc28b7952eeb389bb3261 (patch) | |
| tree | fa41709ad0ad1c58a76febf3e0062c8b5641df9e /sys/sys/fcntl.h | |
| parent | 7c3222498acb0b317b49cca6311ffb697172d7ca (diff) | |
| download | FreeBSD-src-d5ab1c3759352a4180dfc28b7952eeb389bb3261.zip FreeBSD-src-d5ab1c3759352a4180dfc28b7952eeb389bb3261.tar.gz | |
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.
Reviewed by: phk
Diffstat (limited to 'sys/sys/fcntl.h')
| -rw-r--r-- | sys/sys/fcntl.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/sys/fcntl.h b/sys/sys/fcntl.h index fa44125..7133e17 100644 --- a/sys/sys/fcntl.h +++ b/sys/sys/fcntl.h @@ -36,7 +36,7 @@ * SUCH DAMAGE. * * @(#)fcntl.h 8.3 (Berkeley) 1/21/94 - * $Id$ + * $Id: fcntl.h,v 1.6 1997/02/22 09:45:13 peter Exp $ */ #ifndef _SYS_FCNTL_H_ @@ -84,6 +84,7 @@ #define O_EXLOCK 0x0020 /* open with exclusive file lock */ #define O_ASYNC 0x0040 /* signal pgrp when data ready */ #define O_FSYNC 0x0080 /* synchronous writes */ +#define O_NOFOLLOW 0x0100 /* don't follow symlinks */ #endif #define O_CREAT 0x0200 /* create if nonexistent */ #define O_TRUNC 0x0400 /* truncate to zero length */ |
