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zfcpdump: Add install script for zfcpdump

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Since version 198 (Feb 2013) systemd contains kernel-install, a script
managing kernel installs. This script allows execution of drop-in scripts
for customization. Add such a drop-in script to s390-tools to handle the
installation of zfcpdump kernels.

It's main purpose is to manage a link to the latest installed zfcpudump
kernel at ZFCPDUMP_IMAGE, where zipl expects to find the image to install
for a SCSI dumper.

The script supports two installation modes. One recommended by the
BootLoaderSpecs [1] to /boot/<machine-id>/<kernel-version> directories and
one directly to /boot. In the second case files are renamed during
installation to <original-name>-<kernel-version> to guarantee unique names.

Because the zfcpdump kernel is so special make the script stand-alone and
prevent any other script from being executed (exit 77) when a zfcpdump is
installed. Especially avoid functionality like creating an initrd (already
provided by s390-tools) or creating a boot entry (the zfcpdump kernel
should not be used for any other purpose than dumping).

The script requires systemd >= 203.

[1] https://www.freedesktop.org/wiki/Specifications/BootLoaderSpec/

Signed-off-by: Philipp Rudo <prudo@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Philipp Rudo
2018-06-04 11:19:16 +02:00
committed by Jan Höppner
parent d08bd23c1e
commit eb0dc13c88
4 changed files with 130 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
zfcpdump/Makefile
+13 -3
View File
@@ -1,6 +1,7 @@
include ../common.mak
CPIOINIT = $(call echocmd," CPIOINI ",/$@)./cpioinit
INSTALL_SCRIPTS = 10-zfcpdump.install
ifeq (${HAVE_LIBC_STATIC},0)
@@ -20,7 +21,7 @@ check_dep:
"HAVE_LIBC_STATIC=0", \
"-static")
all: check_dep $(ZFCPDUMP_INITRD)
all: check_dep $(ZFCPDUMP_INITRD) scripts
cpioinit: cpioinit.c
$(HOSTCC) $(HOSTCFLAGS) -o $@ $^
@@ -34,12 +35,21 @@ $(ZFCPDUMP_INITRD): cpioinit zfcpdump_part
$(GZIP) -f $@.tmp
$(MV) $@.tmp.gz $(ZFCPDUMP_INITRD)
scripts: $(INSTALL_SCRIPTS)
chmod +x $(INSTALL_SCRIPTS)
install: all
$(INSTALL) -m 611 $(ZFCPDUMP_INITRD) $(DESTDIR)$(ZFCPDUMP_DIR)
%: %.in
zfcpdump_image=$(ZFCPDUMP_DIR)/$(ZFCPDUMP_IMAGE); \
$(SED) -e "s#@zfcpdump_image@#$$zfcpdump_image#g" \
-e "s#@flavor@#$(ZFCPDUMP_FLAVOR)#g" \
< $< > $@
endif
clean:
rm -f *.o *.gz *.tmp *~ zfcpdump_part cpioinit $(ZFCPDUMP_INITRD)
rm -f *.o *.gz *.tmp *~ zfcpdump_part cpioinit $(ZFCPDUMP_INITRD) \
$(INSTALL_SCRIPTS)
.PHONY: all clean install check_dep
.PHONY: all clean install check_dep scripts