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download.pl: check for existing file before the first download attempt

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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>
This commit is contained in:
Felix Fietkau 2016-12-16 15:15:48 +01:00
parent f3b866f93a
commit 651bc94df4
1 changed files with 1 additions and 2 deletions
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3
scripts/download.pl
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@ -246,12 +246,11 @@ push @mirrors, 'http://sources.lede-project.org';
push @mirrors, 'http://mirror2.openwrt.org/sources';
push @mirrors, 'http://downloads.openwrt.org/sources';
while (!$ok) {
while (!-f "$target/$filename") {
my $mirror = shift @mirrors;
$mirror or die "No more mirrors to try - giving up.\n";
download($mirror);
-f "$target/$filename" and $ok = 1;
}
$SIG{INT} = \&cleanup;