From 7a39ea845ac5b0278ac6ee81372db724c0380f39 Mon Sep 17 00:00:00 2001 From: "Yann E. MORIN" Date: Mon, 12 Nov 2018 18:33:12 +0100 Subject: [PATCH] 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" Cc: Ricardo Martincoski Cc: Peter Korsgaard Cc: Arnout Vandecappelle Reviewed-by: Arnout Vandecappelle (Essensium/Mind) Signed-off-by: Peter Korsgaard (cherry picked from commit 6d688e2132f9feb63e325c2456d23edfc53f79a8) Signed-off-by: Peter Korsgaard --- fs/tar/tar.mk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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))