[meta-virtualization] [PATCH v2 2/2] lxc: Add support for seccomp on PPC architectures
akuster@mvista
akuster at mvista.com
Wed Mar 11 05:13:44 PDT 2015
On 3/11/15 1:52 AM, Bogdan Purcareata wrote:
> Add the necessary bits to enable seccomp support for LXC running on PPC
> architectures. libseccomp added support for PPC [1], yet to be applied to
> Yocto/meta-security.
Cool, I will update meta-security soon. (thought I was on that mailing
list??)
- armin
>
> [1] https://github.com/seccomp/libseccomp/tree/working-ppc64
>
> Signed-off-by: Bogdan Purcareata <bogdan.purcareata at freescale.com>
> ---
> .../files/ppc-add-seccomp-support-for-lxc.patch | 100 +++++++++++++++++++++
> recipes-containers/lxc/lxc_1.0.7.bb | 1 +
> 2 files changed, 101 insertions(+)
> create mode 100644 recipes-containers/lxc/files/ppc-add-seccomp-support-for-lxc.patch
>
> diff --git a/recipes-containers/lxc/files/ppc-add-seccomp-support-for-lxc.patch b/recipes-containers/lxc/files/ppc-add-seccomp-support-for-lxc.patch
> new file mode 100644
> index 0000000..6faf791
> --- /dev/null
> +++ b/recipes-containers/lxc/files/ppc-add-seccomp-support-for-lxc.patch
> @@ -0,0 +1,100 @@
> +From 29ca2ec418cb496ac8a19f0718a8474a55cfe16d Mon Sep 17 00:00:00 2001
> +From: Bogdan Purcareata <bogdan.purcareata at freescale.com>
> +Date: Wed, 4 Feb 2015 11:28:32 +0000
> +Subject: [PATCH] seccomp: add ppc support
> +
> +This patch enables seccomp support for LXC containers running on PowerPC
> +architectures. It is based on the latest PowerPC support added to libseccomp, on
> +the working-ppc64 branch [1].
> +
> +Libseccomp has been tested on ppc, ppc64 and ppc64le architectures. LXC with
> +seccomp support has been tested on ppc and ppc64 architectures, using the
> +default seccomp policy example files delivered with the LXC package.
> +
> +[1] https://github.com/seccomp/libseccomp/commits/working-ppc64
> +
> +Upstream-Status: Pending
> +[https://lists.linuxcontainers.org/pipermail/lxc-devel/2015-March/011437.html]
> +
> +Signed-off-by: Bogdan Purcareata <bogdan.purcareata at freescale.com>
> +---
> + src/lxc/seccomp.c | 42 ++++++++++++++++++++++++++++++++++++++++++
> + 1 file changed, 42 insertions(+)
> +
> +diff --git a/src/lxc/seccomp.c b/src/lxc/seccomp.c
> +index 3ba6c9a..0e2310f 100644
> +--- a/src/lxc/seccomp.c
> ++++ b/src/lxc/seccomp.c
> +@@ -121,6 +121,9 @@ enum lxc_hostarch_t {
> + lxc_seccomp_arch_i386,
> + lxc_seccomp_arch_amd64,
> + lxc_seccomp_arch_arm,
> ++ lxc_seccomp_arch_ppc64,
> ++ lxc_seccomp_arch_ppc64le,
> ++ lxc_seccomp_arch_ppc,
> + lxc_seccomp_arch_unknown = 999,
> + };
> +
> +@@ -137,6 +140,12 @@ int get_hostarch(void)
> + return lxc_seccomp_arch_amd64;
> + else if (strncmp(uts.machine, "armv7", 5) == 0)
> + return lxc_seccomp_arch_arm;
> ++ else if (strncmp(uts.machine, "ppc64le", 7) == 0)
> ++ return lxc_seccomp_arch_ppc64le;
> ++ else if (strncmp(uts.machine, "ppc64", 5) == 0)
> ++ return lxc_seccomp_arch_ppc64;
> ++ else if (strncmp(uts.machine, "ppc", 3) == 0)
> ++ return lxc_seccomp_arch_ppc;
> + return lxc_seccomp_arch_unknown;
> + }
> +
> +@@ -150,6 +159,9 @@ scmp_filter_ctx get_new_ctx(enum lxc_hostarch_t n_arch, uint32_t default_policy_
> + case lxc_seccomp_arch_i386: arch = SCMP_ARCH_X86; break;
> + case lxc_seccomp_arch_amd64: arch = SCMP_ARCH_X86_64; break;
> + case lxc_seccomp_arch_arm: arch = SCMP_ARCH_ARM; break;
> ++ case lxc_seccomp_arch_ppc64le: arch = SCMP_ARCH_PPC64LE; break;
> ++ case lxc_seccomp_arch_ppc64: arch = SCMP_ARCH_PPC64; break;
> ++ case lxc_seccomp_arch_ppc: arch = SCMP_ARCH_PPC; break;
> + default: return NULL;
> + }
> +
> +@@ -343,6 +355,36 @@ static int parse_config_v2(FILE *f, char *line, struct lxc_conf *conf)
> + cur_rule_arch = lxc_seccomp_arch_arm;
> + }
> + #endif
> ++#ifdef SCMP_ARCH_PPC64LE
> ++ else if (strcmp(line, "[ppc64le]") == 0 ||
> ++ strcmp(line, "[PPC64LE]") == 0) {
> ++ if (native_arch != lxc_seccomp_arch_ppc64le) {
> ++ cur_rule_arch = lxc_seccomp_arch_unknown;
> ++ continue;
> ++ }
> ++ cur_rule_arch = lxc_seccomp_arch_ppc64le;
> ++ }
> ++#endif
> ++#ifdef SCMP_ARCH_PPC64
> ++ else if (strcmp(line, "[ppc64]") == 0 ||
> ++ strcmp(line, "[PPC64]") == 0) {
> ++ if (native_arch != lxc_seccomp_arch_ppc64) {
> ++ cur_rule_arch = lxc_seccomp_arch_unknown;
> ++ continue;
> ++ }
> ++ cur_rule_arch = lxc_seccomp_arch_ppc64;
> ++ }
> ++#endif
> ++#ifdef SCMP_ARCH_PPC
> ++ else if (strcmp(line, "[ppc]") == 0 ||
> ++ strcmp(line, "[PPC]") == 0) {
> ++ if (native_arch != lxc_seccomp_arch_ppc) {
> ++ cur_rule_arch = lxc_seccomp_arch_unknown;
> ++ continue;
> ++ }
> ++ cur_rule_arch = lxc_seccomp_arch_ppc;
> ++ }
> ++#endif
> + else
> + goto bad_arch;
> +
> +--
> +2.1.4
> +
> diff --git a/recipes-containers/lxc/lxc_1.0.7.bb b/recipes-containers/lxc/lxc_1.0.7.bb
> index b01c006..c9eef75 100644
> --- a/recipes-containers/lxc/lxc_1.0.7.bb
> +++ b/recipes-containers/lxc/lxc_1.0.7.bb
> @@ -29,6 +29,7 @@ SRC_URI = "http://linuxcontainers.org/downloads/${BPN}-${PV}.tar.gz \
> file://add-lxc.rebootsignal.patch \
> file://document-lxc.rebootsignal.patch \
> file://lxc-busybox-use-lxc.rebootsignal-SIGTERM.patch \
> + file://ppc-add-seccomp-support-for-lxc.patch \
> "
>
> SRC_URI[md5sum] = "b48f468a9bef0e4e140dd723f0a65ad0"
>
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