[Buildroot] [PATCH v8 2/2] fs/ext2: Add BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS option
Samuel Martin
s.martin49 at gmail.com
Wed Jul 5 21:00:12 UTC 2017
From: Sébastien Szymanski <sebastien.szymanski at armadeus.com>
This option lets the user specify mke2fs options and/or 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>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout at mind.be>
---
changes v7->v8:
- typos (Arnout)
changes v6->v7:
- none
changes v5->v6:
- wrap help text at 70 chars. (Arnout)
- reword default value explainations (Arnout)
changes v4->v5:
- turn the options to accept any mke2fs options, not only ext2/3/4
features (Arnout)
- add explaination for the default value for this new option (Arnout)
changes v3->v4:
- none
changes v2->v3:
- none
changes v1->v2:
- rebase
---
fs/ext2/Config.in | 18 ++++++++++++++++++
fs/ext2/ext2.mk | 5 ++++-
2 files changed, 22 insertions(+), 1 deletion(-)
diff --git a/fs/ext2/Config.in b/fs/ext2/Config.in
index a851afb439..f0a5cd76e2 100644
--- a/fs/ext2/Config.in
+++ b/fs/ext2/Config.in
@@ -68,6 +68,24 @@ config BR2_TARGET_ROOTFS_EXT2_RESBLKS
Traditionally, this has been 5%, and all ext-related tools still
default to reserving 5% when creating a new ext filesystem.
+config BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS
+ string "additional mke2fs options"
+ default "-O ^64bit"
+ help
+ Specify a space-separated list of mke2fs options, including any
+ ext2/3/4 filesystem features.
+
+ For more information about the mke2fs options, see the manual
+ page mke2fs(8).
+
+ For more information about the ext2/3/4 features which can be
+ set, see then manual page ext4(5).
+
+ The default is "-O ^64bit", i.e. disable the 64-bit filesystem.
+ This is chosen because U-Boot versions before 2017.02 don't
+ support that filesystem option, which may render the system
+ unbootable if it is used.
+
choice
prompt "Compression method"
default BR2_TARGET_ROOTFS_EXT2_NONE
diff --git a/fs/ext2/ext2.mk b/fs/ext2/ext2.mk
index fdd4a389a0..902e6639ee 100644
--- a/fs/ext2/ext2.mk
+++ b/fs/ext2/ext2.mk
@@ -9,6 +9,8 @@ ifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(EXT2_SIZE),y-)
$(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty)
endif
+EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS))
+
# 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))
@@ -19,7 +21,8 @@ EXT2_OPTS = \
-r $(BR2_TARGET_ROOTFS_EXT2_REV) \
-N $(BR2_TARGET_ROOTFS_EXT2_INODES) \
-m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \
- -L "$(EXT2_LABEL)"
+ -L "$(EXT2_LABEL)" \
+ $(EXT2_MKFS_OPTS)
ROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs
--
2.13.2
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