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authorGravatar Yann E. MORIN <yann.morin.1998@free.fr>2018-11-12 18:33:12 +0100
committerGravatar Peter Korsgaard <peter@korsgaard.com>2018-11-20 23:28:07 +0100
commit6d688e2132f9feb63e325c2456d23edfc53f79a8 (patch)
treecc253229acbc95b96df4f8f9c9c010a3c22956fc
parent43e6de35e934429f51fc7c0efa49b7e163e9ea7a (diff)
downloadbuildroot-6d688e2132f9feb63e325c2456d23edfc53f79a8.tar.gz
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fs/tar: add support for xattrs (thus capabilties)
By default, tar will not include any extended attribute (xattr) when creating archives, and thus will not store capabilties either (as they are stored in the xattr 'security.capability'). Using option --xattrs is enough to create a tarball with all the xattrs attached to a file. However, extracting all xattrs from a tarball requires that --xattrs-include='*' be used. This is not symetric (but on purpose, as per the documentation), and so is confusing to some. So, we use --xattrs-include='*' to create the archive, so as to be explicit that we want all xattrs to be stored. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Ricardo Martincoski <ricardo.martincoski@gmail.com> Cc: Peter Korsgaard <peter@korsgaard.com> Cc: Arnout Vandecappelle <arnout@mind.be> Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
-rw-r--r--fs/tar/tar.mk2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/tar/tar.mk b/fs/tar/tar.mk
index 68149e9eb7..4c6327ace8 100644
--- a/fs/tar/tar.mk
+++ b/fs/tar/tar.mk
@@ -10,7 +10,7 @@ ROOTFS_TAR_DEPENDENCIES = $(BR2_TAR_HOST_DEPENDENCY)
define ROOTFS_TAR_CMD
(cd $(TARGET_DIR); find -print0 | LC_ALL=C sort -z | \
- tar $(TAR_OPTS) -cf $@ --null --no-recursion -T - --numeric-owner)
+ tar $(TAR_OPTS) -cf $@ --null --xattrs-include='*' --no-recursion -T - --numeric-owner)
endef
$(eval $(rootfs))