download.pl: check for existing file before the first download attempt
In the build system, flock will prevent multiple concurrent downloads for the same file. However, if one download request for the same file is waiting for another one to finish, it will result in downloading the same file twice consecutively. Prevent this issue by exiting immediately if the file has already been downloaded Signed-off-by: Felix Fietkau <nbd@nbd.name>
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@ -246,12 +246,11 @@ push @mirrors, 'http://sources.lede-project.org';
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push @mirrors, 'http://mirror2.openwrt.org/sources';
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push @mirrors, 'http://downloads.openwrt.org/sources';
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while (!$ok) {
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while (!-f "$target/$filename") {
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my $mirror = shift @mirrors;
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$mirror or die "No more mirrors to try - giving up.\n";
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download($mirror);
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-f "$target/$filename" and $ok = 1;
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}
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$SIG{INT} = \&cleanup;
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