Date: Mon, 10 Mar 1997 12:05:13 -0500 (EST) From: Timothy.Michael.Van.der.Hoek@X2296 To: FreeBSD-gnats-submit@freebsd.org Subject: docs/2939: man 8 sticky Message-ID: <199703101705.MAA00889@X2296> Resent-Message-ID: <199703110320.TAA21708@freefall.freebsd.org>
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>Number: 2939 >Category: docs >Synopsis: `man 8 sticky` == outdated >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-bugs >State: open >Class: doc-bug >Submitter-Id: current-users >Arrival-Date: Mon Mar 10 19:20:08 PST 1997 >Last-Modified: >Originator: Tim Vanderhoek >Organization: >Release: FreeBSD 2.2-961006-SNAP i386 >Environment: March. Snowy. >Description: chmod(2) contradicts the very sticky(8) manpage that it cites re: the effect of the sticky bit on executables. >How-To-Repeat: man 8 sticky >Fix: I don't actually know what I'm talking about, but I think the below fix works... *** sticky.orig Mon Mar 10 11:57:42 1997 --- sticky.8 Mon Mar 10 11:58:26 1997 *************** *** 51,71 **** .Pa /usr/include/sys/stat.h for an explanation of file modes. .Sh STICKY TEXT EXECUTABLE FILES ! An executable shareable file whose sticky bit is set ! will not be immediately discarded from swap space after execution. ! The kernel will hoard the text segment of the file for future ! reuse and avoid having to reload the program. ! Shareable text segments are normally placed ! in a least-frequently-used cache after use, ! and thus the `sticky bit' has little effect on commonly-used text images. ! .Pp ! Sharable executable files are created with the ! .Fl n ! and ! .Fl z ! options of ! the loader ! .Xr ld 1 . .Pp Only the super-user can set the sticky bit on a sharable executable file. --- 51,60 ---- .Pa /usr/include/sys/stat.h for an explanation of file modes. .Sh STICKY TEXT EXECUTABLE FILES ! Historically, the sticky bit on executables was used to ! denote executables which were run often and should be cached ! to speed execution. Thanks to FreeBSD's merged VM/file buffer it now ! dynamically determines which executables should be cached. .Pp Only the super-user can set the sticky bit on a sharable executable file. *************** *** 87,95 **** See .Xr chmod 1 for details about modifying file modes. - .Sh BUGS - Since the text areas of sticky text executables are stashed in the swap area, - abuse of the feature can cause a system to run out of swap. .Pp Neither .Xr open 2 --- 76,81 ---- >Audit-Trail: >Unformatted:
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