add romfs support

The following patch adds the ability to generate a romfs image using genromfs. Josh

diff -purN buildroot-snapshot/target/romfs/Config.in buildroot-romfs/target/romfs/Config.in
--- buildroot-snapshot/target/romfs/Config.in 1969-12-31
16:00:00.000000000 -0800
+++ buildroot-romfs/target/romfs/Config.in 2008-04-01 14:11:13.000000000 -0700
@@ -0,0 +1,7 @@
+config BR2_TARGET_ROOTFS_ROMFS
+ bool "romfs root filesystem"
+ default n
+ select BR2_HOST_FAKEROOT
+ help
+ Build a romfs image of the root filesystem.
+
diff -purN buildroot-snapshot/target/romfs/romfs.mk buildroot-romfs/target/romfs/romfs.mk

@@ -0,0 +1,79 @@
+#############################################################
+#
+# genromfs to build to target romfs filesystems
+#
+#############################################################
+ROMFS_VERSION=0.5.2
+ROMFS_DIR=$(BUILD_DIR)/genromfs-$(ROMFS_VERSION)
+ROMFS_SOURCE=genromfs-$(ROMFS_VERSION).tar.gz
+ROMFS_SITE=http://$(BR2_SOURCEFORGE_MIRROR).dl.sourceforge.net/sourceforge/romfs
+
+$(DL_DIR)/$(ROMFS_SOURCE):
+	 $(WGET) -P $(DL_DIR) $(ROMFS_SITE)/$(ROMFS_SOURCE)
+
+$(ROMFS_DIR): $(DL_DIR)/$(ROMFS_SOURCE)
+	$(ZCAT) $(DL_DIR)/$(ROMFS_SOURCE) | tar -C $(BUILD_DIR) -xvf -
+
+$(ROMFS_DIR)/genromfs: $(ROMFS_DIR)
+	$(MAKE) -C $(ROMFS_DIR)
+	touch -c $@
+
+romfs: $(ROMFS_DIR)/genromfs
+
+romfs-source: $(DL_DIR)/$(ROMFS_SOURCE)
+
+romfs-clean:
+	-$(MAKE) -C $(ROMFS_DIR) clean
+
+romfs-dirclean:
+	rm -rf $(ROMFS_DIR)
+
+#############################################################
+#
+# Build the romfs root filesystem image
+#
+#############################################################
+
+ROMFS_TARGET=$(IMAGE).romfs
+
+romfsroot: host-fakeroot makedevs romfs
+	- at find $(TARGET_DIR) -type f -perm +111 | xargs $(STRIPCMD)

2>/dev/null || true
+ifneq ($(BR2_HAVE_MANPAGES),y)
+ @rm -rf $(TARGET_DIR)/usr/man
+endif
+ifneq ($(BR2_HAVE_INFOPAGES),y)
+ @rm -rf $(TARGET_DIR)/usr/info
+endif
+ $(if $(TARGET_LDCONFIG),test -x $(TARGET_LDCONFIG) &&
$(TARGET_LDCONFIG) -r $(TARGET_DIR) 2>/dev/null)
+ # Use fakeroot to pretend all target binaries are owned by root
+ rm -f $(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+ touch $(PROJECT_BUILD_DIR)/.fakeroot.00000
+ cat $(PROJECT_BUILD_DIR)/.fakeroot* >
$(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+ echo "chown -R 0:0 $(TARGET_DIR)" >>
$(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET)) +ifneq ($(TARGET_DEVICE_TABLE),)
+ # Use fakeroot to pretend to create all needed device nodes
+ echo "$(STAGING_DIR)/bin/makedevs -d $(TARGET_DEVICE_TABLE) $(TARGET_DIR)" \
+ >> $(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+endif
+ # Use fakeroot so genromfs believes the previous fakery
+ echo "$(ROMFS_DIR)/genromfs -d $(TARGET_DIR) -f $(ROMFS_TARGET)" >>
$(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+ chmod a+x $(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+ $(STAGING_DIR)/usr/bin/fakeroot --
$(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+ - at rm -f $(PROJECT_BUILD_DIR)/_fakeroot.$(notdir $(ROMFS_TARGET))
+
+romfsroot-source: romfs-source
+
+romfsroot-clean:
+ -$(MAKE) -C $(ROMFS_DIR) clean
+
+romfsroot-dirclean:
+ rm -rf $(ROMFS_DIR)
+
+#############################################################
+#
+# Toplevel Makefile options
+#
+#############################################################
+ifeq ($(strip $(BR2_TARGET_ROOTFS_ROMFS)),y) +TARGETS+=romfsroot
+endif

Thanks, committed in rev 21618.

Two notes;

1. Your patch was word-wrapped in a few places.

2. Needed to edit target/Config.in to include target/romfs/Config.in also. I guess you did this but forgot to send the patch.

Hamish

Hamish Moffatt VK3SB <[email protected]> <[email protected]>

Hmm, I'll send future patches as attachments if you prefer?

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Inline is ok (easier to comment on) if you can configure your mailer not to break your messages. Maybe not, I guess it's gmail.

Also top-posting is bad :-)

Thanks
Hamish

Hamish Moffatt VK3SB <[email protected]> <[email protected]>

digitalpeer> The following patch adds the ability to generate a romfs digitalpeer> image using genromfs.

Just curious, why would anyone use romfs instead of the more modern alternatives (cramfs, squashfs)?

Bye, Peter Korsgaard