diff options
| author | Niels Provos <provos@cvs.openbsd.org> | 1999-12-30 19:04:29 +0000 |
|---|---|---|
| committer | Niels Provos <provos@cvs.openbsd.org> | 1999-12-30 19:04:29 +0000 |
| commit | 4fb18ee53f6747b1959ec13f3ee6077a597886e3 (patch) | |
| tree | fbd6ef2f1a85d690dc8ec4370e388777e906a174 /share | |
| parent | ac9765a7a6c39d899034549875b6a686f6e5809b (diff) | |
document UVM_SWAP_ENCRYPT
Diffstat (limited to 'share')
| -rw-r--r-- | share/man/man4/options.4 | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/share/man/man4/options.4 b/share/man/man4/options.4 index 16ec761ce01..fb5f43e5b38 100644 --- a/share/man/man4/options.4 +++ b/share/man/man4/options.4 @@ -1,4 +1,4 @@ -.\" $OpenBSD: options.4,v 1.41 1999/12/21 17:57:09 provos Exp $ +.\" $OpenBSD: options.4,v 1.42 1999/12/30 19:04:28 provos Exp $ .\" $NetBSD: options.4,v 1.21 1997/06/25 03:13:00 thorpej Exp $ .\" .\" Copyright (c) 1998 Theo de Raadt @@ -503,6 +503,18 @@ Adds support for the boot option (User Kernel Config). Allows modification of kernel settings (i.e., device parameters) before booting the system. +.It Cd option UVM_SWAP_ENCRYPT +Enables kernel support for encrypting pages that are written out to +swap storage. Swap encryption avoids that sensitive data stays +alive on the disk even after the operating system has been shut down. +This option should be turned on if cryptographic filesystems are used. +The sysctl variable +.Em vm.swapencrypt +controls its behaviour. See +.Xr sysctl 8 +and +.Xr sysctl 3 +for details. .El .Ss Networking Options .Bl -ohang |