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btrbk: add fallback_default_config action option, use for action "diff" 

Preparatory for action "ls"
pull/293/head
Axel Burri 2019-07-28 18:54:34 +02:00
parent 381a12241b
commit d88221e8bc
1 changed files with 26 additions and 19 deletions
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45
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@ -3916,10 +3916,7 @@ sub parse_config(@)
last;
}
}
unless($file) {
ERROR "Configuration file not found: " . join(', ', @config_files);
return undef;
}
return undef unless($file);
my $root = init_config(SRC_FILE => $file);
my $cur = $root;
@ -4882,6 +4879,7 @@ MAIN:
my @dir_args;
my $args_expected_min = 0;
my $args_expected_max = 9999;
my $fallback_default_config;
if(($command eq "run") || ($command eq "dryrun")) {
$action_run = 1;
$dryrun = 1 if($command eq "dryrun");
@ -4919,6 +4917,7 @@ MAIN:
}
elsif ($command eq "diff") {
$action_diff = 1;
$fallback_default_config = 1;
$args_expected_min = $args_expected_max = 2;
@subvol_args = @ARGV;
}
@ -5052,6 +5051,27 @@ MAIN:
INFO "$VERSION_INFO (" . localtime($start_time) . ")";
action("startup", status => "v$VERSION", message => $VERSION_INFO, time => $start_time);
#
# parse config file
#
my $config = parse_config(@config_src);
unless($config) {
if($fallback_default_config) {
INFO "Configuration file not found, falling back to defaults";
$config = init_config();
}
else {
ERROR "Configuration file not found: " . join(', ', @config_src);
exit 2;
}
}
unless(ref($config->{SUBSECTION}) eq "ARRAY") {
ERROR "No volumes defined in configuration file";
exit 2;
}
if($action_diff)
{
#
@ -5059,14 +5079,13 @@ MAIN:
#
my $src_url = $subvol_args[0] || die;
my $target_url = $subvol_args[1] || die;
my $default_config = init_config();
# NOTE: ssh://{src,target} uses default config
my $src_vol = vinfo($src_url, $default_config);
my $src_vol = vinfo($src_url, $config);
unless(vinfo_init_root($src_vol)) { ERROR "Failed to fetch subvolume detail for '$src_vol->{PRINT}'" . ($err ? ": $err" : ""); exit 1; }
if($src_vol->{node}{is_root}) { ERROR "Subvolume is btrfs root: $src_vol->{PRINT}"; exit 1; }
my $target_vol = vinfo($target_url, $default_config);
my $target_vol = vinfo($target_url, $config);
unless(vinfo_init_root($target_vol)) { ERROR "Failed to fetch subvolume detail for '$target_vol->{PRINT}'" . ($err ? ": $err" : ""); exit 1; }
if($target_vol->{node}{is_root}) { ERROR "Subvolume is btrfs root: $target_vol->{PRINT}"; exit 1; }
@ -5137,18 +5156,6 @@ MAIN:
}
#
# parse config file
#
my $config = parse_config(@config_src);
unless($config) {
ERROR "Failed to parse configuration file";
exit 2;
}
unless(ref($config->{SUBSECTION}) eq "ARRAY") {
ERROR "No volumes defined in configuration file";
exit 2;
}
#
# try exclusive lock if set in config or command-line option