kumquat-buildroot/support
Yann E. MORIN 0d19fcf6c2 core/download: fix when the BR2_DL_DIR does not accept hardlinks
When the BR2_DL_DIR is a mountpoint (presumably shared between various
machine, or mounted from the local host when running in a VM), it is
possible that it does not support hardlinks (e.g. samba, or the VMWare
VMFS, etc...).

If the hardlink fails, fallback to copying the file. As a last resort,
if that also fails, eventually fallback to doing the download.

Note: this means that the dl-wrapper is no longer atomic-safe: the code
suffers of a TOCTTOU condition: the file may be created in-between the
check and the moment we try to ln/cp it. Fortunately, the dl-wrapper is
now run under an flock, so we're still safe. If we eventually go for a
more fine-grained implementation, we'll have to be careful then.

Reported-by: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Peter Korsgaard <peter@korsgaard.com>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-04-03 22:45:00 +02:00
..
config-fragments toolchain-configs.csv: re-organize for test-pkg 2018-04-01 16:30:30 +02:00
dependencies check-host-tar.sh: bump minimum tar version to 1.27 for reproducible tar files with long paths 2018-04-02 14:46:52 +02:00
docker support/dockerfile: install flake8 2018-03-13 22:32:36 +01:00
download core/download: fix when the BR2_DL_DIR does not accept hardlinks 2018-04-03 22:45:00 +02:00
gnuconfig support/gnuconfig: bump version to 2016-05-15 2016-06-05 22:26:57 +02:00
kconfig merge_config.sh: add br2-external support 2018-01-29 14:54:42 +01:00
legal-info legal-info: add hash for our own license file 2017-07-05 16:31:40 +02:00
libtool support/libtool: add patch for newer versions 2014-12-21 13:21:56 +01:00
misc Update for 2018.02 2018-03-04 22:28:34 +01:00
scripts support/scripts/graph-depends: add --flat-list option 2018-04-01 22:25:57 +02:00
testing testing/infra/builder: split configure() from build() 2018-04-01 19:59:36 +02:00