mirror of
https://github.com/lgcosta/pf-linux-port.git
synced 2026-11-12 20:28:06 -03:00
lgcosta
5323ee2c71
- pfk_hooks: PRE→PF_IN, LOCAL_OUT/POST→PF_OUT v4+v6; replacement/buffer handling with NF_STOLEN + re-injection (documented divergence: re-entry) - pfk_mod: pf_status_init/pfattach + pfi attach via pfk_if event callback - pfk_kern: NET_LOCK holder reentrancy (fix deadlock when notifier fires under the write lock — observed as full-VM network hang) - tools: static pfctl link for musl VMs
181 lines
6.5 KiB
Makefile
181 lines
6.5 KiB
Makefile
LDFLAGS ?= -static
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# PFLINUX — build OpenBSD 8.0 pfctl userland for Linux.
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#
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# Layout:
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# include/ compat headers (sys/ioctl.h with OpenBSD _IO encoding,
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# net/{route,if,if_dl}.h, netinet/tcp_fsm.h, md5.h, ...)
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# plus copies generated at build time:
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# include/net/pfvar.h <- ../module/include/net/pfvar.h
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# include/sys/{queue,tree}.h, include/net/{radix,hfsc,
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# fq_codel}.h <- ../_vendor/upstream/sys/...
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# pfctl/ pristine OpenBSD 8.0 sbin/pfctl sources + marked edits
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# compat-user/ glibc missing pieces (sysctl, strtonum, md5, tcpstates)
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# abitest/ ABI struct layout table (built twice: tools/include and
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# module/include, compared, MD5-verified)
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# out/ build products (make clean removes)
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#
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# Contract: `make -C tools` must work with plain make/gcc/bison.
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TOP := $(abspath $(dir $(lastword $(MAKEFILE_LIST))))
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ROOT := $(abspath $(TOP)/..)
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MODULE := $(ROOT)/module
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VENDOR := $(ROOT)/_vendor/upstream
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SRC := $(TOP)/pfctl
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COMPAT := $(TOP)/compat-user
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INC := $(TOP)/include
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OUT := $(TOP)/out
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OBJ := $(OUT)/obj
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GEN := $(OUT)/gen
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CC ?= cc
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BISON ?= bison
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# PFLINUX: include order is ABI-critical. $(INC) first so sys/ioctl.h
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# (OpenBSD PFKXIOC encoding, identical to module/include/pfk.h),
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# net/pfvar.h, sys/{queue,tree}.h, net/{route,if,if_dl}.h,
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# netinet/tcp_fsm.h and md5.h shadow the Linux system headers.
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# pflinux_compat.h is force-included (attribute macros, strtonum,
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# strings.h) before any source's own #includes.
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CPPFLAGS += -I$(INC) -I$(GEN) -include $(INC)/pflinux_compat.h
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CFLAGS ?= -O2 -g
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CFLAGS += -std=gnu17 -Wall -D_GNU_SOURCE
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LDLIBS += -lm
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# Headers copied verbatim at build time (never edited; single source of
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# truth stays in module/ and _vendor/).
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GENHDRS := $(INC)/net/pfvar.h $(INC)/net/radix.h $(INC)/net/hfsc.h \
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$(INC)/net/fq_codel.h $(INC)/sys/tree.h $(INC)/sys/queue.h
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PF_SRCS := pfctl.c pfctl_parser.c pf_print_state.c pfctl_table.c \
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pfctl_queue.c pfctl_radix.c pfctl_osfp.c pfctl_optimize.c
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CB_SRCS := sysctl.c strtonum.c bsd.c md5.c rbtree.c inet_net_pton.c
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PF_OBJS := $(addprefix $(OBJ)/,$(PF_SRCS:.c=.o)) $(OBJ)/parse.o
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CB_OBJS := $(addprefix $(OBJ)/,$(CB_SRCS:.c=.o))
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GOODTESTS := tests/01_basic.conf tests/02_translations.conf \
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tests/03_queues_scrub.conf
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.PHONY: all pfctl abitest test abi clean
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all: pfctl abitest
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pfctl: $(OUT)/pfctl
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# ---------------------------------------------------------------------------
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# generated (copied) headers
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# ---------------------------------------------------------------------------
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# Contract: userland MUST use the exact kernel-side ABI header.
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$(INC)/net/pfvar.h: $(MODULE)/include/net/pfvar.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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$(INC)/net/radix.h: $(VENDOR)/sys/net/radix.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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$(INC)/net/hfsc.h: $(VENDOR)/sys/net/hfsc.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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$(INC)/net/fq_codel.h: $(VENDOR)/sys/net/fq_codel.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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$(INC)/sys/tree.h: $(VENDOR)/sys/sys/tree.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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$(INC)/sys/queue.h: $(VENDOR)/sys/sys/queue.h
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@mkdir -p $(@D)
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@cmp -s $< $@ || cp -f $< $@
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# ---------------------------------------------------------------------------
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# grammar: OpenBSD pfctl has a hand-written lexer inside parse.y; only
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# bison is required (flex is NOT used).
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# ---------------------------------------------------------------------------
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$(GEN)/parse.c: $(SRC)/parse.y $(GENHDRS)
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@mkdir -p $(GEN)
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$(BISON) -d -o $@ $<
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$(OBJ)/%.o: $(SRC)/%.c $(GENHDRS)
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@mkdir -p $(OBJ)
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$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
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$(OBJ)/parse.o: $(GEN)/parse.c $(SRC)/pfctl.h $(SRC)/pfctl_parser.h
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@mkdir -p $(OBJ)
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$(CC) $(CPPFLAGS) $(CFLAGS) -I$(SRC) -c $< -o $@
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$(OBJ)/%.o: $(COMPAT)/%.c $(GENHDRS)
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@mkdir -p $(OBJ)
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$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
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# PFLINUX: OpenBSD 8.0 pfctl links the kernel's pf_ruleset.c userland
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# branch ("Effort sponsored... Userland equivalents so we can lend code
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# to pfctl") for anchor/ruleset management (pf_anchor_setup,
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# pf_find_or_create_ruleset, pf_main_anchor, ...). Compiled straight
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# from _vendor, unmodified.
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$(OBJ)/pf_ruleset.o: $(VENDOR)/sys/net/pf_ruleset.c $(GENHDRS)
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@mkdir -p $(OBJ)
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$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
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$(OUT)/pfctl: $(PF_OBJS) $(CB_OBJS) $(OBJ)/pf_ruleset.o
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@mkdir -p $(OUT)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(PF_OBJS) $(CB_OBJS) $(OBJ)/pf_ruleset.o $(LDLIBS)
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# ---------------------------------------------------------------------------
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# ABI table: same abitest.c compiled twice —
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# out/abitest : headers from tools/include (copied pfvar.h)
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# out/abitest-module : tools/include shims but net/pfvar.h taken directly
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# from ../module/include (kernel ABI header)
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# The two tables must be byte-identical (proof: MD5 over the table).
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# The kernel-module-side check (structs compiled with the real kernel
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# compat headers under -D_KERNEL) is done separately by the integrator.
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# ---------------------------------------------------------------------------
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abitest: $(OUT)/abitest $(OUT)/abitest-module
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$(OBJ)/abitest-user.o: $(TOP)/abitest/abitest.c $(GENHDRS)
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@mkdir -p $(OBJ)
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$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@
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$(OBJ)/abitest-module.o: $(TOP)/abitest/abitest.c $(GENHDRS)
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@mkdir -p $(OBJ)
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$(CC) -I$(MODULE)/include $(CPPFLAGS) $(CFLAGS) -c $< -o $@
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$(OUT)/abitest: $(OBJ)/abitest-user.o $(OBJ)/md5.o
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@mkdir -p $(OUT)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)
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$(OUT)/abitest-module: $(OBJ)/abitest-module.o $(OBJ)/md5.o
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@mkdir -p $(OUT)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $^ $(LDLIBS)
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abi: abitest
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@$(OUT)/abitest > $(OUT)/abi-tools.tbl
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@$(OUT)/abitest-module > $(OUT)/abi-module.tbl
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@diff -u $(OUT)/abi-tools.tbl $(OUT)/abi-module.tbl && \
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echo "ABI OK: identical tables"
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@tail -n 1 $(OUT)/abi-tools.tbl
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# ---------------------------------------------------------------------------
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# offline (-n) parse validation, no /dev/pf required
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# ---------------------------------------------------------------------------
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test: $(OUT)/pfctl
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@ok=1; for c in $(GOODTESTS); do \
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if $(OUT)/pfctl -n -f $$c >/dev/null 2>&1; then \
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echo "PASS $$c (exit 0)"; \
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else \
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echo "FAIL $$c (exit $$?)"; ok=0; \
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fi; \
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done; \
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if $(OUT)/pfctl -n -f tests/broken.conf >/dev/null 2>&1; then \
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echo "FAIL tests/broken.conf accepted"; ok=0; \
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else \
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echo "PASS tests/broken.conf rejected (non-zero exit)"; \
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fi; \
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test $$ok -eq 1
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clean:
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rm -rf $(OUT)
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rm -f $(GENHDRS)
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