1*4882a593Smuzhiyun################################################################################ 2*4882a593Smuzhiyun# 3*4882a593Smuzhiyun# Build the ext2 root filesystem image 4*4882a593Smuzhiyun# 5*4882a593Smuzhiyun################################################################################ 6*4882a593Smuzhiyun 7*4882a593SmuzhiyunROOTFS_EXT2_SIZE = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_SIZE)) 8*4882a593Smuzhiyunifeq ($(BR2_TARGET_ROOTFS_EXT2)-$(ROOTFS_EXT2_SIZE),y-) 9*4882a593Smuzhiyun$(error BR2_TARGET_ROOTFS_EXT2_SIZE cannot be empty) 10*4882a593Smuzhiyunendif 11*4882a593Smuzhiyun 12*4882a593Smuzhiyun# If SIZE is AUTO, which mean shrink the filesystem to the minimum size. 13*4882a593Smuzhiyun# Suppose 2G is big enough for buildroot ext filesystem, we then shrink 14*4882a593Smuzhiyun# it after rootfs img packed. 15*4882a593Smuzhiyunifeq ($(ROOTFS_EXT2_SIZE),AUTO) 16*4882a593SmuzhiyunROOTFS_EXT2_SIZE = 2G 17*4882a593Smuzhiyundefine ROOTFS_EXT2_SHRINK 18*4882a593Smuzhiyun $(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2 19*4882a593Smuzhiyun $(HOST_DIR)/sbin/e2fsck -fy $(BINARIES_DIR)/rootfs.ext2 20*4882a593Smuzhiyun $(HOST_DIR)/sbin/tune2fs -m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) $(BINARIES_DIR)/rootfs.ext2 21*4882a593Smuzhiyun $(HOST_DIR)/sbin/resize2fs -M $(BINARIES_DIR)/rootfs.ext2 22*4882a593Smuzhiyunendef 23*4882a593Smuzhiyunendif 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunROOTFS_EXT2_MKFS_OPTS = $(call qstrip,$(BR2_TARGET_ROOTFS_EXT2_MKFS_OPTIONS)) 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun# qstrip results in stripping consecutive spaces into a single one. So the 28*4882a593Smuzhiyun# variable is not qstrip-ed to preserve the integrity of the string value. 29*4882a593SmuzhiyunROOTFS_EXT2_LABEL = $(subst ",,$(BR2_TARGET_ROOTFS_EXT2_LABEL)) 30*4882a593Smuzhiyun#" Syntax highlighting... :-/ ) 31*4882a593Smuzhiyun 32*4882a593SmuzhiyunROOTFS_EXT2_OPTS = \ 33*4882a593Smuzhiyun -d $(TARGET_DIR) \ 34*4882a593Smuzhiyun -r $(BR2_TARGET_ROOTFS_EXT2_REV) \ 35*4882a593Smuzhiyun -N $(BR2_TARGET_ROOTFS_EXT2_INODES) \ 36*4882a593Smuzhiyun -m $(BR2_TARGET_ROOTFS_EXT2_RESBLKS) \ 37*4882a593Smuzhiyun -L "$(ROOTFS_EXT2_LABEL)" \ 38*4882a593Smuzhiyun $(ROOTFS_EXT2_MKFS_OPTS) 39*4882a593Smuzhiyun 40*4882a593SmuzhiyunROOTFS_EXT2_DEPENDENCIES = host-e2fsprogs 41*4882a593Smuzhiyun 42*4882a593Smuzhiyundefine ROOTFS_EXT2_CMD 43*4882a593Smuzhiyun rm -f $@ 44*4882a593Smuzhiyun $(HOST_DIR)/sbin/mkfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN) $(ROOTFS_EXT2_OPTS) $@ \ 45*4882a593Smuzhiyun "$(ROOTFS_EXT2_SIZE)" \ 46*4882a593Smuzhiyun || { ret=$$?; \ 47*4882a593Smuzhiyun echo "*** Maybe you need to increase the filesystem size (BR2_TARGET_ROOTFS_EXT2_SIZE)" 1>&2; \ 48*4882a593Smuzhiyun exit $$ret; \ 49*4882a593Smuzhiyun } 50*4882a593Smuzhiyunendef 51*4882a593Smuzhiyun 52*4882a593Smuzhiyunifneq ($(BR2_TARGET_ROOTFS_EXT2_GEN),2) 53*4882a593Smuzhiyundefine ROOTFS_EXT2_SYMLINK 54*4882a593Smuzhiyun ln -sf rootfs.ext2$(ROOTFS_EXT2_COMPRESS_EXT) $(BINARIES_DIR)/rootfs.ext$(BR2_TARGET_ROOTFS_EXT2_GEN)$(ROOTFS_EXT2_COMPRESS_EXT) 55*4882a593Smuzhiyunendef 56*4882a593SmuzhiyunROOTFS_EXT2_POST_GEN_HOOKS += ROOTFS_EXT2_SYMLINK ROOTFS_EXT2_SHRINK 57*4882a593Smuzhiyunendif 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun$(eval $(rootfs)) 60