[OE-core] [RFC PATCH 1/2] e2fsprogs: add populate-extfs.sh

[Robert Yang]

This script is originally from Darren Hart, it will be used for creating
the ext* filesystem from a given directory, which will replace the
genext2fs in image_types.bbclass at the moment, we may use the mke2fs to
replace this script again when it has the initial directory support.

Changes of the script:
* Rename it from mkdebugfs.sh to populate-extfs.sh
* Add a simple usage
* Add checking for the number of the parameters
* Add the "regular empty file" and "fifo" file type
* Set mode, uid and gid for the file
* Save the command lines to a file and batch run them
* Change the error message
* Improve the performance

[YOCTO #3848]

Signed-off-by: Darren Hart <dvhart at linux.intel.com>
Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 .../e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh   | 69 ++++++++++++++++++++++
 .../recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb |  2 +
 2 files changed, 71 insertions(+)
 create mode 100644 meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh

diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh b/meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh
new file mode 100644
index 0000000..638bd74
--- /dev/null
+++ b/meta/recipes-devtools/e2fsprogs/e2fsprogs-1.42.7/populate-extfs.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+
+do_usage () {
+	cat << _EOF
+Usage: populate-extfs.sh <source> <device>
+Create an ext2/ext3/ext4 filesystem from a directory or file
+
+  source: The source directory or file
+  device: The target device
+
+_EOF
+	exit 1
+}
+
+[ $# -ne 2 ] && do_usage
+
+SRCDIR=$1
+DEVICE=$2
+DEBUGFS="debugfs"
+
+{
+	CWD="/"
+	find $SRCDIR | while read FILE; do
+                TGT="${FILE##*/}"
+                DIR="${FILE#$SRCDIR}"
+                DIR="${DIR%$TGT}"
+
+		# Skip the root dir
+		[ ! -z "$TGT" ] || continue
+
+		if [ "$DIR" != "$CWD" ]; then
+			echo "cd $DIR"
+			CWD="$DIR"
+		fi
+
+		# Only stat once since stat is a time consuming command
+		STAT=$(stat -c "TYPE=\"%F\";DEVNO=\"%t %T\";MODE=\"%f\";U=\"%u\";G=\"%g\"" $FILE)
+		eval $STAT
+
+		case $TYPE in
+		"directory")
+			echo "mkdir $TGT"
+			;;
+		"regular file" | "regular empty file")
+			echo "write $FILE $TGT"
+			;;
+		"symbolic link")
+			LINK_TGT=$(readlink $FILE)
+			echo "symlink $TGT $LINK_TGT"
+			;;
+		"block special file" | "character special file")
+			echo "mknod $TGT b $DEVNO"
+			;;
+		"fifo")
+			echo "mknod $TGT p"
+			;;
+		*)
+			echo "Unknown/unhandled file type '$TYPE' file: $FILE" 1>&2
+			;;
+		esac
+
+		# Set the file mode
+		echo "sif $TGT mode 0x$MODE"
+
+		# Set uid and gid
+		echo "sif $TGT uid $U"
+		echo "sif $TGT gid $G"
+	done
+} | $DEBUGFS -w -f - $DEVICE
diff --git a/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb b/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb
index 9e22563..9b65184 100644
--- a/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb
+++ b/meta/recipes-devtools/e2fsprogs/e2fsprogs_1.42.7.bb
@@ -4,6 +4,7 @@ PR = "r0"
 
 SRC_URI += "file://acinclude.m4 \
             file://remove.ldconfig.call.patch \
+            file://populate-extfs.sh \
 "
 
 SRC_URI[md5sum] = "a1ec22ef003688dae9f76c74881b22b9"
@@ -41,6 +42,7 @@ do_install_append () {
 		mv ${D}${base_libdir}/e2initrd_helper ${D}${libdir}
 		mv ${D}${base_libdir}/pkgconfig ${D}${libdir}
 	fi
+	install -m 0755 ${WORKDIR}/populate-extfs.sh ${D}${bindir}
 }
 
 RDEPENDS_e2fsprogs = "e2fsprogs-badblocks"
-- 
1.7.11.2