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criu/Makefile

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Makefile
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-include Makefile.inc
CFLAGS += -I./include
CFLAGS += -O0 -ggdb3
LIBS += -lrt -lpthread
DEFINES += -D_FILE_OFFSET_BITS=64
DEFINES += -D_GNU_SOURCE
ifneq ($(WERROR),0)
WARNINGS += -Werror
endif
ifeq ($(DEBUG),1)
DEFINES += -DCR_DEBUG
endif
WARNINGS += -Wall -Wno-unused
CFLAGS += $(WARNINGS) $(DEFINES)
PROGRAM := crtools
export CC ECHO MAKE CFLAGS LIBS ARCH DEFINES
OBJS_GEN_DEP += parasite-syscall.o
OBJS_GEN_DEP += cr-restore.o
DEPS_GEN := $(patsubst %.o,%.d,$(OBJS_GEN_DEP))
OBJS += $(OBJS_GEN_DEP)
OBJS += crtools.o
OBJS += proc_parse.o
OBJS += cr-dump.o
OBJS += cr-show.o
OBJS += cr-check.o
OBJS += util.o
OBJS += util-net.o
OBJS += sysctl.o
OBJS += ptrace.o
OBJS += rbtree.o
OBJS += log.o
Unix sockets initial support Currently it can only work with stream sockets, which have no skbs in queues (listening or established -- both work OK). The cpt part uses the sock_diag engine that was merged to Dave recently to collect sockets. Then it dumps sockets by checking the filesystem ID of a failed-to-open through /proc/pid/fd descriptors (sockets do not allow for such tricks with opens through proc) against SOCKFS_TYPE. The rst part is more tricky. Listen sockets are just restored, this is simple. Connected sockets are restored like this: 1. One end establishes a listening anon socket at the desired descriptor; 2. The other end just creates a socket at the desired descriptor; 3. All sockets, that are to be connect()-ed call connect. Unix sockets do not block connect() till the accept() time and thus we continue with... 4. ... all listening sockets call accept() and ... dup2 the new fd into the accepting end. There's a problem with this approach -- socket names are not preserved, but looking into our OpenVZ implementation I think this is OK for existing apps. What should be done next is: 1. Need to merge the file IDs patches in our tree and make Andrey to support files sharing. This will solve the sk = socket(); fork(); case. Currently it simply doesn't work :( 2. Need to add support for DGRAM sockets -- I wrote comment how to do it in the can_dump_unix_sk() 3. Need to add support for in-flight connections 4. Implement support for UDP sockets (quite simple) 5. Implement support for listening TCP sockets (also not very complex) 6. Implement support for connected TCP scokets (hard one, Tejun's patches are not very good for this from my POV) Cyrill, plz, apply this patch and put the above descriptions onto wiki docs (do we have the plans page yet?). Andrey, plz, take care of unix sockets tests in zdtm. Most likely it won't work till you do the shared files support for sockets. Signed-off-by: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
2011-12-26 22:12:03 +04:00
OBJS += libnetlink.o
OBJS += sockets.o
OBJS += files.o
files: Use sys_kcmp to find file descriptor duplicates v4 We switch generic-object-id concept with sys_kcmp approach, which implies changes of image format a bit (and since it's early time for project overall, we're allowed to). In short -- previously every file descriptor had an ID generated by a kernel and exported via procfs. If the appropriate file descriptors were the same objects in kernel memory -- the IDs did match up to bit. It allows us to figure out which files were actually the identical ones and should be restored in a special way. Once sys_kcmp system call was merged into the kernel, we've got a new opprotunity -- to use this syscall instead. The syscall basically compares kernel objects and returns ordered results suitable for objects sorting in a userspace. For us it means -- we treat every file descriptor as a combination of 'genid' and 'subid'. While 'genid' serves for fast comparison between fds, the 'subid' is kind of a second key, which guarantees uniqueness of genid+subid tuple over all file descritors found in a process (or group of processes). To be able to find and dump file descriptors in a single pass we collect every fd into a global rbtree, where (!) each node might become a root for a subtree as well. The main tree carries only non-equal genid. If we find genid which is already in tree, we need to make sure that it's either indeed a duplicate or not. For this we use sys_kcmp syscall and if we find that file descriptors are different -- we simply put new fd into a subtree. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: Pavel Emelyanov <xemul@parallels.com>
2012-02-28 18:27:28 +04:00
OBJS += file-ids.o
OBJS += namespaces.o
OBJS += uts_ns.o
OBJS += ipc_ns.o
OBJS-BLOB += parasite.o
SRCS-BLOB += $(patsubst %.o,%.c,$(OBJS-BLOB))
HEAD-BLOB-GEN := $(patsubst %.o,%-blob.h,$(OBJS-BLOB))
HEAD-BIN := $(patsubst %.o,%.bin,$(OBJS-BLOB))
HEAD-LDS := $(patsubst %.o,%.lds.S,$(OBJS-BLOB))
ROBJS-BLOB := restorer.o
#
# Everything embedded into restorer as a separate
# object file should go here.
ROBJS := $(ROBJS-BLOB)
ROBJS += restorer-log.o
RSRCS-BLOB += $(patsubst %.o,%.c,$(ROBJS))
RSRCS-BLOB += $(patsubst %.o,%.c,$(ROBJS-BLOB))
RHEAD-BLOB-GEN := $(patsubst %.o,%-blob.h,$(ROBJS-BLOB))
RHEAD-BIN := $(patsubst %.o,%.bin,$(ROBJS-BLOB))
RHEAD-LDS := $(patsubst %.o,%.lds.S,$(ROBJS-BLOB))
DEPS := $(patsubst %.o,%.d,$(OBJS)) \
$(patsubst %.o,%.d,$(OBJS-BLOB)) \
$(patsubst %.o,%.d,$(ROBJS-BLOB))
GEN-OFFSETS := gen-offsets.sh
all: $(PROGRAM)
$(OBJS-BLOB): $(SRCS-BLOB)
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) -fpic $< -o $@
parasite-util-net.o: util-net.c
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) -fpic $< -o $@
$(HEAD-BIN): $(HEAD-LDS) $(OBJS-BLOB) parasite-util-net.o
$(E) " GEN " $@
$(Q) $(LD) -T $^ -o $@
$(HEAD-BLOB-GEN): $(HEAD-BIN) $(GEN-OFFSETS)
$(E) " GEN " $@
$(Q) $(SH) $(GEN-OFFSETS) parasite > $@ || rm -f $@
$(Q) sync
$(ROBJS): $(RSRCS-BLOB)
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) -fpic $(patsubst %.o,%.c,$@) -o $@
$(RHEAD-BIN): $(ROBJS) $(RHEAD-LDS)
$(E) " GEN " $@
$(Q) $(LD) -T $(patsubst %.bin,%.lds.S,$@) -o $@ $(ROBJS)
$(RHEAD-BLOB-GEN): $(RHEAD-BIN) $(GEN-OFFSETS)
$(E) " GEN " $@
$(Q) $(SH) $(GEN-OFFSETS) restorer > $@ || rm -f $@
$(Q) sync
%.o: %.c
$(E) " CC " $@
$(Q) $(CC) -c $(CFLAGS) $< -o $@
%.i: %.c
$(E) " CC " $@
$(Q) $(CC) -E $(CFLAGS) $< -o $@
%.s: %.c
$(E) " CC " $@
$(Q) $(CC) -S $(CFLAGS) -fverbose-asm $< -o $@
$(PROGRAM): $(OBJS)
$(E) " LINK " $@
$(Q) $(CC) $(CFLAGS) $(OBJS) $(LIBS) -o $@
$(DEPS_GEN): $(HEAD-BLOB-GEN) $(RHEAD-BLOB-GEN)
%.d: %.c
$(Q) $(CC) -M -MT $(patsubst %.d,%.o,$@) $(CFLAGS) $< -o $@
test-legacy: $(PROGRAM)
$(Q) $(MAKE) -C test/legacy all
.PHONY: test-legacy
zdtm: $(PROGRAM)
$(Q) $(MAKE) -C test/zdtm all
.PHONY: zdtm
test: zdtm
$(Q) $(SH) test/zdtm.sh
.PHONY: test
rebuild:
$(E) " FORCE-REBUILD"
$(Q) $(RM) -f ./*.o
$(Q) $(RM) -f ./*.d
$(Q) $(MAKE)
.PHONY: rebuild
clean:
$(E) " CLEAN"
$(Q) $(RM) -f ./*.o
$(Q) $(RM) -f ./*.d
$(Q) $(RM) -f ./*.i
$(Q) $(RM) -f ./*.img
$(Q) $(RM) -f ./*.out
$(Q) $(RM) -f ./*.bin
$(Q) $(RM) -f ./$(PROGRAM)
$(Q) $(RM) -f ./$(HEAD-BLOB-GEN)
$(Q) $(RM) -f ./$(RHEAD-BLOB-GEN)
$(Q) $(RM) -rf ./test/dump/
$(Q) $(MAKE) -C test/legacy clean
$(Q) $(MAKE) -C test/zdtm cleandep
$(Q) $(MAKE) -C test/zdtm clean
$(Q) $(MAKE) -C test/zdtm cleanout
$(Q) $(MAKE) -C Documentation clean
.PHONY: clean
distclean: clean
$(E) " DISTCLEAN"
$(Q) $(RM) -f ./tags
$(Q) $(RM) -f ./cscope*
.PHONY: distclean
tags:
$(E) " GEN" $@
$(Q) $(RM) -f tags
$(Q) $(FIND) . -name '*.[hcS]' ! -path './.*' -print | xargs ctags -a
.PHONY: tags
cscope:
$(E) " GEN" $@
$(Q) $(FIND) . -name '*.[hcS]' ! -path './.*' -print > cscope.files
$(Q) $(CSCOPE) -bkqu
.PHONY: cscope
docs:
$(Q) $(MAKE) -s -C Documentation all
.PHONY: docs
help:
$(E) ' Targets:'
$(E) ' all - Build all [*] targets'
$(E) ' * crtools - Build crtools'
$(E) ' zdtm - Build zdtm test-suite'
$(E) ' docs - Build documentation'
$(E) ' clean - Clean everything'
$(E) ' tags - Generate tags file (ctags)'
$(E) ' cscope - Generate cscope database'
$(E) ' rebuild - Force-rebuild of [*] targets'
$(E) ' test - Run zdtm test-suite'
.PHONY: help
deps-targets := %.o %.s %.i
ifeq ($(filter deps-targets, $(MAKECMDGOALS)),)
-include $(DEPS)
endif