* nix-prefetch-url: don't fail if /tmp/nix-prefetch-url-<pid> exists,

instead use a counter just like we do for temporary build
  directories.
This commit is contained in:
Eelco Dolstra 2007-11-05 18:12:29 +00:00
parent 5f8a203b55
commit 5b74a59570

View file

@ -36,6 +36,28 @@ if test -n "$expHash"; then
fi
mkTempDir() {
local i=0
while true; do
if test -z "$TMPDIR"; then TMPDIR=/tmp; fi
tmpPath=$TMPDIR/nix-prefetch-url-$$-$i
if mkdir "$tmpPath"; then break; fi
# !!! to bad we can't check for ENOENT in mkdir, so this check
# is slightly racy (it bombs out if somebody just removed
# $tmpPath...).
if ! test -e "$tmpPath"; then exit 1; fi
i=$((i + 1))
done
trap removeTempDir EXIT SIGINT SIGQUIT
}
removeTempDir() {
if test -n "$tmpPath"; then
rm -rf "$tmpPath" || true
fi
}
doDownload() {
@curl@ $cacheFlags --fail -# --location --max-redirs 20 --disable-epsv \
--cookie-jar $tmpPath/cookies "$url" -o $tmpFile
@ -46,9 +68,8 @@ doDownload() {
# download the file and add it to the store.
if test -z "$finalPath"; then
tmpPath=/tmp/nix-prefetch-url-$$ # !!! security?
mkTempDir
tmpFile=$tmpPath/$name
mkdir $tmpPath # !!! retry if tmpPath already exists
# Optionally do timestamp-based caching of the download.
# Actually, the only thing that we cache in $NIX_DOWNLOAD_CACHE is
@ -98,8 +119,6 @@ if test -z "$finalPath"; then
# Add the downloaded file to the Nix store.
finalPath=$(@bindir@/nix-store --add-fixed "$hashType" $tmpFile)
if test -n "$tmpPath"; then rm -rf $tmpPath || true; fi
if test -n "$expHash" -a "$expHash" != "$hash"; then
echo "hash mismatch for URL \`$url'" >&2
exit 1