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Code Issues Releases Activity

Reflect reality of sticky bits and UFS-based filesystems.

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PR:		docs/4198
Submitted by:	Ada T. Lim <ada@not-enough.bandwidth.org>
This commit is contained in:
Steve Price 1997-08-17 00:19:28 +00:00
parent 6da0bcbdf2
commit 51cc902b40
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=28276
1 changed files with 10 additions and 3 deletions
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13
lib/libc/sys/chmod.2
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@ -30,7 +30,7 @@
.\" SUCH DAMAGE.
.\"
.\" @(#)chmod.2 8.1 (Berkeley) 6/4/93
.\" $Id: chmod.2,v 1.8 1997/02/22 15:03:43 peter Exp $
.\" $Id: chmod.2,v 1.9 1997/03/21 20:57:18 mpp Exp $
.\"
.Dd June 4, 1993
.Dt CHMOD 2
@ -90,13 +90,17 @@ defined in
#define S_ISUID 0004000 /* set user id on execution */
#define S_ISGID 0002000 /* set group id on execution */
#define S_ISVTX 0001000 /* sticky bit */
#ifndef _POSIX_SOURCE
#define S_ISTXT 0001000
#endif
.Ed
.Pp
The
.Tn FreeBSD
VM system totally ignores the sticky bit
.Pf ( Dv ISVTX
) for executables.
) for executables. On UFS-based filesystems (FFS, MFS, LFS) the sticky
bit may only be set upon directories.
.Pp
If mode
.Dv ISVTX
@ -145,6 +149,8 @@ The named file resides on a read-only file system.
points outside the process's allocated address space.
.It Bq Er EIO
An I/O error occurred while reading from or writing to the file system.
.It Bq Er EFTYPE
An attempt was made to set the sticky bit upon an executable.
.El
.Pp
.Fn Fchmod
@ -170,7 +176,8 @@ An I/O error occurred while reading from or writing to the file system.
The
.Fn chmod
function call is expected to conform to
.St -p1003.1-90 .
.St -p1003.1-90 ,
except for the return of EFTYPE and the use of S_ISTXT.
.Sh HISTORY
A
.Fn chmod