[lkml]   [2016]   [Jul]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH] samples/seccomp: Add standalone config option
Add a separate Kconfig option for SAMPLES_SECCOMP.

Main reason for this is that, just like other samples, it's forced to be a module.

Without this, since the sample is a target only controlled by
CONFIG_SECCOMP_FILTER, the samples will be built before include files are
put in place properly. For example, from an arm64 allmodconfig built with
"make -sk -j 32" (without specific target), the following happens:

samples/seccomp/bpf-fancy.c:13:27: fatal error: linux/seccomp.h: No such file or directory
samples/seccomp/bpf-helper.h:20:50: fatal error: linux/seccomp.h: No such file or directory
samples/seccomp/dropper.c:20:27: fatal error: linux/seccomp.h: No such file or directory
samples/seccomp/bpf-direct.c:21:27: fatal error: linux/seccomp.h: No such file or directory

So, just stick to the same format as other samples.

Signed-off-by: Olof Johansson <>
samples/Kconfig | 7 +++++++
samples/seccomp/Makefile | 2 +-
2 files changed, 8 insertions(+), 1 deletion(-)

Hi Kees,

This has been showing up for a while on my builder, and I finally had
a bit of time to sit down and look at it.

It'd be nice to see this in 4.7, but please consider for 4.8 at the least.



diff --git a/samples/Kconfig b/samples/Kconfig
index 559a58b..ccc50be 100644
--- a/samples/Kconfig
+++ b/samples/Kconfig
@@ -85,4 +85,11 @@ config SAMPLE_CONNECTOR
with it.
See also Documentation/connector/connector.txt

+ tristate "Build seccomp sample code -- loadable modules only"
+ depends on SECCOMP_FILTER && m
+ help
+ Build samples of seccomp filters using various methods of
+ BPF filter construction.
endif # SAMPLES
diff --git a/samples/seccomp/Makefile b/samples/seccomp/Makefile
index 1b4e4b8..ae7ff6f 100644
--- a/samples/seccomp/Makefile
+++ b/samples/seccomp/Makefile
@@ -1,7 +1,7 @@
# kbuild trick to avoid linker error. Can be omitted if a module is built.
obj- := dummy.o

-hostprogs-$(CONFIG_SECCOMP_FILTER) := bpf-fancy dropper bpf-direct
+hostprogs-$(CONFIG_SAMPLE_SECCOMP) := bpf-fancy dropper bpf-direct

HOSTCFLAGS_bpf-fancy.o += -I$(objtree)/usr/include
HOSTCFLAGS_bpf-fancy.o += -idirafter $(objtree)/include
 \ /
  Last update: 2016-07-06 09:41    [W:0.042 / U:4.768 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site