kumquat-buildroot/package/mke2img/Config.in.host

config BR2_PACKAGE_HOST_MKE2IMG
	bool "host mke2img"
	select BR2_PACKAGE_HOST_E2FSPROGS
	select BR2_PACKAGE_HOST_GENEXT2FS
	help
	  Easily create filesystems of the extend familly: ext2/3/4.

	  This tool is bundled by, and specific to Buildroot. However, it can
	  be used from post-images scripts is needed.
package/mke2img: new package Currently, we are using a shell script called genext2fs, that impersonates the real genext2fs. But that script does much more than just call genextfs: it also calls tune2fs and e2fsck. Because it impersonates genext2fs, we can not easily add new options, and are constrained by the genext2fs options. But it turns out that, of all the options supported by the real genext2fs, we only really care for a subset, namely: - number of blocks - number of inodes - percentage of blocks reeserved to root - the root directory which to generate the image from So, we introduce a new host package, mke2img, that is intended to eventually replace genext2fs.sh. This new script is highly modeled from the existing genext2fs.sh, but was slightly refreshed, and a new, supposedly sane set of options has been choosen for the features we need (see above), and some new options were added, too, rather than relying on the arguments order or environment variables: -b <nb-blocks> number of blocks in the filesystem -i <nb-inodes> number of inodes in the filesystem -r <pc-reserved> percentage of reserved blocks * -d <root-dir> directory containing the root of the filesystem * -o <img-file> output image file -G <ext-gen> extfs generation: 2, 3, or 4 (default: 2) -R <ext-rev> ext2 revision: 0 or 1 (default 1) -l <label> filesystem label -u <uid> filesystem UUID; if not specified, a random one is used * Mandatory options Since the upstream e2fsprogs are expected to release a new mke2fs that will be able to generate a filesystem image from a directory, we then will be able to replace all the logic in mke2img, to use mke2fs instead of the (relatively fragile) combination of the three tools we currently use. An entry is added for it in the "Host utilities" menu, so it can be selected for use by post-{build,image} scripts. The ext2 filesystem selection is changed to select that now. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Tested-by: Karoly Kasza <kaszak@gmail.com> Reviewed-by: Karoly Kasza <kaszak@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> 2014-12-06 23:40:04 +01:00			`config BR2_PACKAGE_HOST_MKE2IMG`
			`bool "host mke2img"`
			`select BR2_PACKAGE_HOST_E2FSPROGS`
			`select BR2_PACKAGE_HOST_GENEXT2FS`
			`help`
			`Easily create filesystems of the extend familly: ext2/3/4.`

			`This tool is bundled by, and specific to Buildroot. However, it can`
			`be used from post-images scripts is needed.`