diff options
| author |   provos <provos@openbsd.org> | 1999-12-30 19:04:28 +0000 |
|---|---|---|
| committer | provos <provos@openbsd.org> | 1999-12-30 19:04:28 +0000 |
| commit | 7879df18bcbdc05dbdd3d2d21927f4ed35948ee3 (patch) | |
| tree | 4c504f25911fd1d7bc2f6fb3dee4a697ebac7437 | |
| parent | swap encryption for UVM, option UVM_SWAP_ENCRYPT. needs to be enabled (diff) | |
| download | wireguard-openbsd-7879df18bcbdc05dbdd3d2d21927f4ed35948ee3.tar.xz wireguard-openbsd-7879df18bcbdc05dbdd3d2d21927f4ed35948ee3.zip | |
document UVM_SWAP_ENCRYPT
| -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 |