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seccomp: don't support v2 if seccomp_syscall_resolve_name_arch is not avilable

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Also don't use arm arch if not defined

This *should* fix build so precise, but I didn't fire one off.
I did test that builds with libseccomp2 still work as expected.

Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
Acked-by: Stéphane Graber <stgraber@ubuntu.com>
This commit is contained in:
Serge Hallyn 2014-02-12 17:20:22 -06:00 committed by Stéphane Graber
parent 5a15791eb2
commit 2b0ae718c8
2 changed files with 6 additions and 1 deletions
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1
configure.ac
View File

@ -274,6 +274,7 @@ AM_COND_IF([ENABLE_CAP],
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $SECCOMP_CFLAGS"
AC_CHECK_TYPES([scmp_filter_ctx], [], [], [[#include <seccomp.h>]])
AC_CHECK_DECLS([seccomp_syscall_resolve_name_arch], [], [], [[#include <seccomp.h>]])
CFLAGS="$OLD_CFLAGS"
# Configuration examples

6
src/lxc/seccomp.c
View File

@ -57,6 +57,7 @@ static int parse_config_v1(FILE *f, struct lxc_conf *conf)
return 0;
}
#if HAVE_DECL_SECCOMP_SYSCALL_RESOLVE_NAME_ARCH
static void remove_trailing_newlines(char *l)
{
char *p = l;
@ -109,6 +110,7 @@ static uint32_t get_and_clear_v2_action(char *line, uint32_t def_action)
default: return ret;
}
}
#endif
/*
* v2 consists of
@ -126,7 +128,7 @@ static uint32_t get_and_clear_v2_action(char *line, uint32_t def_action)
*/
static int parse_config_v2(FILE *f, char *line, struct lxc_conf *conf)
{
#if HAVE_SCMP_FILTER_CTX
#if HAVE_DECL_SECCOMP_SYSCALL_RESOLVE_NAME_ARCH
char *p;
int ret;
scmp_filter_ctx *ctx = NULL;
@ -189,9 +191,11 @@ static int parse_config_v2(FILE *f, char *line, struct lxc_conf *conf)
else if (strcmp(line, "[X86_64]") == 0 ||
strcmp(line, "[x86_64]") == 0)
arch = SCMP_ARCH_X86_64;
#ifdef SCMP_ARCH_ARM
else if (strcmp(line, "[arm]") == 0 ||
strcmp(line, "[ARM]") == 0)
arch = SCMP_ARCH_ARM;
#endif
else
goto bad_arch;
if (ctx) {