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authorLeo Famulari <leo@famulari.name>2021-03-16 21:36:36 -0400
committerLudovic Courtès <ludo@gnu.org>2021-03-18 12:17:33 +0100
commit898489f48e436e45e86e1ba0fcdb6df5cd5a051a (patch)
treec9a100f2a5278eb0dfb629ec092f7f0d707c82a9 /doc
parent45695cc8a7b56b711baf664ceedaa66124d6de26 (diff)
services: Enable "protected hardlinks" and "protected symlinks" by default.
References: https://sysctl-explorer.net/fs/protected_hardlinks/ https://sysctl-explorer.net/fs/protected_symlinks/ * gnu/services/sysctl.scm (%default-sysctl-settings): New public variable. (<sysctl-configuration>): Use %default-sysctl-settings as the default value. * gnu/services/base.scm (%base-services): Add sysctl-service-type. * doc/guix.texi (Miscellaneous Services): Document the new defaults. Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Diffstat (limited to 'doc')
-rw-r--r--doc/guix.texi22
1 files changed, 21 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 0a70ac7f11..73757be887 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -31378,6 +31378,21 @@ instantiated as:
(sysctl-configuration
(settings '(("net.ipv4.ip_forward" . "1")))))
@end lisp
+
+Since @code{sysctl-service-type} is used in the default lists of
+services, @code{%base-services} and @code{%desktop-services}, you can
+use @code{modify-services} to change its configuration and add the
+kernel parameters that you want (@pxref{Service Reference,
+@code{modify-services}}).
+
+@lisp
+(modify-services %base-services
+ (sysctl-service-type config =>
+ (sysctl-configuration
+ (settings (append '(("net.ipv4.ip_forward" . "1"))
+ %default-sysctl-settings)))))
+@end lisp
+
@end defvr
@deftp {Data Type} sysctl-configuration
@@ -31387,11 +31402,16 @@ The data type representing the configuration of @command{sysctl}.
@item @code{sysctl} (default: @code{(file-append procps "/sbin/sysctl"})
The @command{sysctl} executable to use.
-@item @code{settings} (default: @code{'()})
+@item @code{settings} (default: @code{%default-sysctl-settings})
An association list specifies kernel parameters and their values.
@end table
@end deftp
+@defvr {Scheme Variable} %default-sysctl-settings
+An association list specifying the default @command{sysctl} parameters
+on Guix System.
+@end defvr
+
@cindex pcscd
@subsubheading PC/SC Smart Card Daemon Service