For some reason sysctl earlier allowed quite strange separators.
% sysctl kernel./.pty.nr
kernel./.pty.nr = 6
% sysctl kernel///pty//////////nr
kernel...pty..........nr = 6
This commit does not disallow that sort of constructs, but will warn
about them. In future disallowing these might be reasonable thing to
do.
% sysctl kernel./.pty.nr
sysctl: separators should not be repeated: ./.pty.nr
kernel./.pty.nr = 6
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Useful for e.g network hook scripts together with --system to only apply
sysctls for a specific network interface.
Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
instead of requiring distributions to construct a loop around sysctl
in boot scripts just scan a set of default directories if the --system
switch is used.
Config files are applied in alphabetic order of their base name.
Each base name is only applied once according to the directory
preference. /etc/sysctl.conf is always applied last.
Signed-off-by: Ludwig Nussel <ludwig.nussel@suse.de>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
The sysctl now uses getopt_long and has help screen which be user
friendly. Rest of the modernization is left later, since this is
a command is used in scripts, and changing for instance error
printing to use warn & warnx could break stuff.
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
