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Makefile, seccomp: Fix build for i386, ppc64, ppc64le

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On some distributions, on ppc64, ulimit -s returns 'unlimited': add a
reasonable default, and also make sure ulimit is invoked using the
default shell, which should ensure ulimit is actually implemented.

Also note that AUDIT_ARCH doesn't follow closely the naming reported
by 'uname -m': convert for i386 and ppc as needed.

While at it, move inclusion of seccomp.h after util.h, the former is
less generic (cosmetic/clang-tidy only).

Older kernel headers might lack a definition for AUDIT_ARCH_PPC64LE:
define that explicitly if it's not available.

Signed-off-by: Stefano Brivio <sbrivio@redhat.com>
This commit is contained in:
Stefano Brivio 2022-01-25 19:07:05 +01:00
parent b93c2c1713
commit fa7e2e7016
3 changed files with 18 additions and 4 deletions
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14
Makefile
View file

@ -9,11 +9,21 @@
# Copyright (c) 2021 Red Hat GmbH
# Author: Stefano Brivio <sbrivio@redhat.com>
RLIMIT_STACK_VAL := $(shell /bin/sh -c 'ulimit -s')
ifeq ($(RLIMIT_STACK_VAL),unlimited)
RLIMIT_STACK_VAL := 1024
endif
AUDIT_ARCH := $(shell uname -m | tr [a-z] [A-Z])
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/I[456]86/I386/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPC64/PPC/')
AUDIT_ARCH := $(shell echo $(AUDIT_ARCH) | sed 's/PPCLE/PPC64LE/')
CFLAGS += -Wall -Wextra -pedantic -std=c99 -D_XOPEN_SOURCE=700 -D_GNU_SOURCE
CFLAGS += -DRLIMIT_STACK_VAL=$(shell ulimit -s)
CFLAGS += -DPAGE_SIZE=$(shell getconf PAGE_SIZE)
CFLAGS += -DNETNS_RUN_DIR=\"/run/netns\"
CFLAGS += -DPASST_AUDIT_ARCH=AUDIT_ARCH_$(shell uname -m | tr [a-z] [A-Z])
CFLAGS += -DPASST_AUDIT_ARCH=AUDIT_ARCH_$(AUDIT_ARCH)
CFLAGS += -DRLIMIT_STACK_VAL=$(RLIMIT_STACK_VAL)
CFLAGS += -DARCH=\"$(shell uname -m)\"
# On gcc 11.2, with -O2 and -flto, tcp_hash() and siphash_20b(), if inlined,

2
passt.c
View file

@ -56,8 +56,8 @@
#include <linux/capability.h>
#include <linux/icmpv6.h>
#include "seccomp.h"
#include "util.h"
#include "seccomp.h"
#include "passt.h"
#include "dhcp.h"
#include "dhcpv6.h"

6
seccomp.sh
View file

@ -16,7 +16,11 @@
TMP="$(mktemp)"
OUT="seccomp.h"
HEADER="/* This file was automatically generated by $(basename ${0}) */"
HEADER="/* This file was automatically generated by $(basename ${0}) */
#ifndef AUDIT_ARCH_PPC64LE
#define AUDIT_ARCH_PPC64LE (AUDIT_ARCH_PPC64 | __AUDIT_ARCH_LE)
#endif"
# Prefix for each profile: check that 'arch' in seccomp_data is matching
PRE='