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authorEelco Dolstra <edolstra@gmail.com>2017-05-29T09·34+0200
committerEelco Dolstra <edolstra@gmail.com>2017-05-29T14·14+0200
commit6cc6c15a2d50d0021d7242e9806ed6d54538de17 (patch)
treee9a5fbd03cd6c1e0a1d8b68fff784f2d0f29dee7 /configure.ac
parent6e01ecd112dce8d8bbe46c839f982892a3ffb589 (diff)
Add a seccomp filter to prevent creating setuid/setgid binaries
This prevents builders from setting the S_ISUID or S_ISGID bits,
preventing users from using a nixbld* user to create a setuid/setgid
binary to interfere with subsequent builds under the same nixbld* uid.

This is based on aszlig's seccomp code
(47f587700d646f5b03a42f2fa57c28875a31efbe).

Reported by Linus Heckemann.
Diffstat (limited to 'configure.ac')
-rw-r--r--configure.ac7
1 files changed, 7 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 24a95ce56f3b..9d8a81d0427b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -176,6 +176,13 @@ AC_SUBST(HAVE_SODIUM, [$have_sodium])
 PKG_CHECK_MODULES([LIBLZMA], [liblzma], [CXXFLAGS="$LIBLZMA_CFLAGS $CXXFLAGS"])
 
 
+# Look for libseccomp, required for Linux sandboxing.
+if test "$sys_name" = linux; then
+  PKG_CHECK_MODULES([LIBSECCOMP], [libseccomp],
+                    [CXXFLAGS="$LIBSECCOMP_CFLAGS $CXXFLAGS"])
+fi
+
+
 # Look for aws-cpp-sdk-s3.
 AC_LANG_PUSH(C++)
 AC_CHECK_HEADERS([aws/s3/S3Client.h],