kumquat-buildroot/fs/cpio/cpio.mk
Yann E. MORIN dec061adce fs/cpio: don't extend packages' permissions table
Currently, when we build a cpio filesystem without static devices, we
shoehorn the /dev/console node as if it were specified by a package.

This means that this device is added for all filesystems as well, not
just the cpio. But if we disable cpio, that device is not created for
other filesystems.

This is not very clean, and may break expectations.

Instead, use an explicit mknod as part of the _CMD, as we know it's
going to run under fakeroot.

This is still visible to all filesystems built after cpio, and not to
those built before it, though.

[Peter: ensure /dev exists, simplify comment]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
2018-03-31 20:47:25 +02:00

46 lines
1.2 KiB
Makefile

################################################################################
#
# cpio to archive target filesystem
#
################################################################################
ifeq ($(BR2_ROOTFS_DEVICE_CREATION_STATIC),y)
define ROOTFS_CPIO_ADD_INIT
if [ ! -e $(TARGET_DIR)/init ]; then \
ln -sf sbin/init $(TARGET_DIR)/init; \
fi
endef
else
# devtmpfs does not get automounted when initramfs is used.
# Add a pre-init script to mount it before running init
# We must have /dev/console very early, even before /init runs,
# for stdin/stdout/stderr
define ROOTFS_CPIO_ADD_INIT
if [ ! -e $(TARGET_DIR)/init ]; then \
$(INSTALL) -m 0755 fs/cpio/init $(TARGET_DIR)/init; \
fi
mkdir -p $(TARGET_DIR)/dev
mknod -m 0622 $(TARGET_DIR)/dev/console c 5 1
endef
endif # BR2_ROOTFS_DEVICE_CREATION_STATIC
ROOTFS_CPIO_PRE_GEN_HOOKS += ROOTFS_CPIO_ADD_INIT
define ROOTFS_CPIO_CMD
cd $(TARGET_DIR) && find . | cpio --quiet -o -H newc > $@
endef
ifeq ($(BR2_TARGET_ROOTFS_CPIO_UIMAGE),y)
ROOTFS_CPIO_DEPENDENCIES += host-uboot-tools
define ROOTFS_CPIO_UBOOT_MKIMAGE
$(MKIMAGE) -A $(MKIMAGE_ARCH) -T ramdisk \
-C none -d $@$(ROOTFS_CPIO_COMPRESS_EXT) $@.uboot
endef
ROOTFS_CPIO_POST_GEN_HOOKS += ROOTFS_CPIO_UBOOT_MKIMAGE
endif
$(eval $(rootfs))