package/skeleton-init-sysv: conditionally enable swapon/swapoff in inittab

The default inittab files added by busybox and sysvinit runs 'swapon -a'
during init and 'swapoff -a' during shutdown, but those programs are not
guaranteed to be available, so the boot log may become polluted by error
messages like this:

    swapon: not found

Add a target-finalize hook to skeleton-init-sysv that enables or disables
the swapon/swapoff lines in /etc/inittab, depending on the existence of
$(TARGET_DIR)/sbin/swap{on,off}.

Based on a previous patch sent by Thomas De Schampheleire.

Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Carlos Santos 2020-02-07 19:33:22 -03:00 committed by Peter Korsgaard
parent ffb189ed5a
commit fbe18eb246

View File

@ -19,4 +19,15 @@ define SKELETON_INIT_SYSV_INSTALL_TARGET_CMDS
$(call SYSTEM_RSYNC,$(SKELETON_INIT_SYSV_PKGDIR)/skeleton,$(TARGET_DIR))
endef
# enable/disable swapon/off calls depending on availability of the commands
define SKELETON_INIT_SYSV_SWAPON_SWAPOFF_INITTAB
if [ -x $(TARGET_DIR)/sbin/swapon -a -x $(TARGET_DIR)/sbin/swapoff ]; then \
$(SED) '/^#.*\/sbin\/swap/s/^#\+[[:blank:]]*//' $(TARGET_DIR)/etc/inittab; \
else \
$(SED) '/^[^#].*\/sbin\/swap/s/^/#/' $(TARGET_DIR)/etc/inittab; \
fi
endef
SKELETON_INIT_SYSV_TARGET_FINALIZE_HOOKS += SKELETON_INIT_SYSV_SWAPON_SWAPOFF_INITTAB
$(eval $(generic-package))