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lxc: fix build without seccomp if libseccomp built 

This fixes compiling lxc without seccomp support if libseccomp is
already installed to the staging dir.  Patches were applied upstream.

Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
This commit is contained in:
Eneas U de Queiroz 2021-01-19 10:29:26 -03:00
parent 9e32bfa1f9
commit 470176905d
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GPG Key ID: 5FB9FAF260B80AEA
3 changed files with 78 additions and 1 deletions
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2
utils/lxc/Makefile
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@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
PKG_NAME:=lxc
PKG_VERSION:=4.0.5
PKG_RELEASE:=1
PKG_RELEASE:=2
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.gz
PKG_SOURCE_URL:=https://linuxcontainers.org/downloads/lxc/

34
utils/lxc/patches/030-commands-fix-check-for-seccomp-notify-support.patch Normal file
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@ -0,0 +1,34 @@
From a342b11fedb3010630de4909ca707ebdc0862060 Mon Sep 17 00:00:00 2001
From: Eneas U de Queiroz <cotequeiroz@gmail.com>
Date: Fri, 25 Dec 2020 13:54:14 -0300
Subject: [PATCH 1/2] commands: fix check for seccomp notify support
Use HAVE_SECCOMP_NOTIFY instead of HAVE_DECL_SECCOMP_NOTIFY_FD.
Currently the latter will be true if the declaration is found by
configure, even if 'configure --disable-seccomp' is used.
HAVE_SECCOMP_NOTIFY is defined in lxcseccomp.h if both HAVE_SECCOMP and
HAVE_DECL_SECCOMP_NOTIFY_FD are true, which is the correct behavior.
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
--- a/src/lxc/commands.c
+++ b/src/lxc/commands.c
@@ -498,7 +498,7 @@ static int lxc_cmd_get_devpts_fd_callbac
int lxc_cmd_get_seccomp_notify_fd(const char *name, const char *lxcpath)
{
-#if HAVE_DECL_SECCOMP_NOTIFY_FD
+#ifdef HAVE_SECCOMP_NOTIFY
int ret, stopped;
struct lxc_cmd_rr cmd = {
.req = {
@@ -523,7 +523,7 @@ static int lxc_cmd_get_seccomp_notify_fd
struct lxc_handler *handler,
struct lxc_epoll_descr *descr)
{
-#if HAVE_DECL_SECCOMP_NOTIFY_FD
+#ifdef HAVE_SECCOMP_NOTIFY
struct lxc_cmd_rsp rsp = {
.ret = 0,
};

43
utils/lxc/patches/035-configure-skip-libseccomp-tests-if-it-is-disabled.patch Normal file
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@ -0,0 +1,43 @@
From 67cd8bde2d46983df8fa9f647e9fc0b96370ec29 Mon Sep 17 00:00:00 2001
From: Eneas U de Queiroz <cotequeiroz@gmail.com>
Date: Sat, 16 Jan 2021 13:54:07 -0300
Subject: [PATCH 2/2] configure: skip libseccomp tests if it is disabled
Move the block checking for libseccomp api compatibility inside
AM_COND_IF([ENABLE_SECCOMP] ... ).
Signed-off-by: Eneas U de Queiroz <cotequeiroz@gmail.com>
--- a/configure.ac
+++ b/configure.ac
@@ -284,6 +284,14 @@ AM_COND_IF([ENABLE_SECCOMP],
AC_CHECK_LIB([seccomp], [seccomp_init],[],[AC_MSG_ERROR([You must install the seccomp development package in order to compile lxc])])
AC_SUBST([SECCOMP_LIBS], [-lseccomp])
])
+ # HAVE_SCMP_FILTER_CTX=1 will tell us we have libseccomp api >= 1.0.0
+ OLD_CFLAGS="$CFLAGS"
+ CFLAGS="$CFLAGS $SECCOMP_CFLAGS"
+ AC_CHECK_TYPES([scmp_filter_ctx], [], [], [[#include <seccomp.h>]])
+ AC_CHECK_DECLS([seccomp_notify_fd], [], [], [[#include <seccomp.h>]])
+ AC_CHECK_TYPES([struct seccomp_notif_sizes], [], [], [[#include <seccomp.h>]])
+ AC_CHECK_DECLS([seccomp_syscall_resolve_name_arch], [], [], [[#include <seccomp.h>]])
+ CFLAGS="$OLD_CFLAGS"
])
AC_MSG_CHECKING(for static libcap)
@@ -331,15 +339,6 @@ AM_COND_IF([ENABLE_CAP],
AC_CHECK_LIB(cap,cap_get_file, AC_DEFINE(LIBCAP_SUPPORTS_FILE_CAPABILITIES,1,[Have cap_get_file]),[],[])
AC_SUBST([CAP_LIBS], [-lcap])])
-# HAVE_SCMP_FILTER_CTX=1 will tell us we have libseccomp api >= 1.0.0
-OLD_CFLAGS="$CFLAGS"
-CFLAGS="$CFLAGS $SECCOMP_CFLAGS"
-AC_CHECK_TYPES([scmp_filter_ctx], [], [], [[#include <seccomp.h>]])
-AC_CHECK_DECLS([seccomp_notify_fd], [], [], [[#include <seccomp.h>]])
-AC_CHECK_TYPES([struct seccomp_notif_sizes], [], [], [[#include <seccomp.h>]])
-AC_CHECK_DECLS([seccomp_syscall_resolve_name_arch], [], [], [[#include <seccomp.h>]])
-CFLAGS="$OLD_CFLAGS"
-
AC_CHECK_HEADERS([linux/bpf.h], [
AC_CHECK_TYPES([struct bpf_cgroup_dev_ctx], [], [], [[#include <linux/bpf.h>]])
], [], [])