[Buildroot] [PATCH v3 10/11] fs/ext2: Add BR2_TARGET_ROOTFS_EXT2_FEATURES option

[Samuel Martin]

From: Sébastien Szymanski <sebastien.szymanski at armadeus.com>

This option lets the user specify ext2/3/4 features.

Signed-off-by: Sébastien Szymanski <sebastien.szymanski at armadeus.com>
Signed-off-by: Samuel Martin <s.martin49 at gmail.com>
Cc: "Yann E. MORIN" <yann.morin.1998 at free.fr>

---
changes v2->v3:
- none

changes v1->v2:
- rebase
---
 fs/ext2/Config.in | 10 ++++++++++
 fs/ext2/ext2.mk   |  5 ++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/fs/ext2/Config.in b/fs/ext2/Config.in
index 9850823e10..123a4ad6a6 100644
--- a/fs/ext2/Config.in
+++ b/fs/ext2/Config.in
@@ -89,6 +89,16 @@ config BR2_TARGET_ROOTFS_EXT2_RESBLKS
 	  Traditionally, this has been 5%, and all ext-related tools still
 	  default to reserving 5% when creating a nez ext filesystem.
 
+config BR2_TARGET_ROOTFS_EXT2_FEATURES
+	string "Filesystem features"
+	default "^64bit"
+	help
+	  Specify a comma-separated list of ext2/3/4 features.
+	  For more information about this option, see the mkefs' -O option in
+	  the manual page mke2fs(8).
+	  For more information about the features which can be set, see then
+	  manual page ext4(5).
+
 choice
 	prompt "Compression method"
 	default BR2_TARGET_ROOTFS_EXT2_NONE
diff --git a/fs/ext2/ext2.mk b/fs/ext2/ext2.mk
index bc366bc689..ddf30ecd10 100644
--- a/fs/ext2/ext2.mk
+++ b/fs/ext2/ext2.mk
@@ -9,6 +9,8 @@ ifeq ($(EXT2_SIZE),)
 $(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
 endif
 
+EXT2_FEATURES = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_FEATURES))
+
 # qstrip results in stripping consecutive spaces into a single one. So the
 # variable is not qstrip-ed to preserve the integrity of the string value.
 EXT2_LABEL := $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL))
@@ -20,7 +22,8 @@ EXT2_OPTS = \
 	-b $(BR2_TARGET_ROOTFS_EXT2_BLOCK_SIZE) \
 	-N $(BR2_TARGET_ROOTFS_EXT2_INODES) \
 	-m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
-	-L "$(EXT2_LABEL)"
+	-L "$(EXT2_LABEL)" \
+	$(if $(EXT2_FEATURES),-O "$(EXT2_FEATURES)")
 
 ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
 
-- 
2.13.2