Unverified Commit 5d7723dd authored by Janne Heß's avatar Janne Heß
Browse files

nixos/switch-to-configuration: Lock the switch 

This prevents any concurrent switches from happening which is not an
issue I have seen people complaining about but it seems like a good
measure.
parent 3397af26

nixos/modules/system/activation/switch-to-configuration.pl

+4 −0
Original line number Diff line number Diff line
@@ -22,6 +22,7 @@ use JSON::PP; 
use IPC::Cmd;

use Sys::Syslog qw(:standard :macros);

use Cwd qw(abs_path);

use Fcntl ':flock';



## no critic(ControlStructures::ProhibitDeepNests)

## no critic(ErrorHandling::RequireCarping)
@@ -91,6 +92,8 @@ if (!-f "/etc/NIXOS" && (read_file("/etc/os-release", err_mode => "quiet") // "" 
}



make_path("/run/nixos", { mode => oct(755) });

open(my $stc_lock, '>>', '/run/nixos/switch-to-configuration.lock') or die "Could not open lock - $!";

flock($stc_lock, LOCK_EX) or die "Could not acquire lock - $!";

openlog("nixos", "", LOG_USER);



# Install or update the bootloader.
@@ -983,4 +986,5 @@ if ($res == 0) { 
    syslog(LOG_ERR, "switching to system configuration $toplevel failed (status $res)");

}



close($stc_lock) or die "Could not close lock - $!";

exit($res);