On Fri, May 13, 2022 at 02:58:05PM -0700, Andrii Nakryiko wrote:
> > -TRUNNER_EXTRA_FILES := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
> > - ima_setup.sh \
> > +TRUNNER_EXTRA_BUILD := $(OUTPUT)/urandom_read $(OUTPUT)/bpf_testmod.ko \
> > $(wildcard progs/btf_dump_test_case_*.c)
>
>
> note that progs/btf_dump_test_case_*.c are not built, they are just
> copied over (C source files), so I don't think this fix is necessary.
>
> btw, I tried running `OUTPUT="/tmp/bpf" make test_progs` and it didn't
> error out. But tbh, I'd recommend building everything instead of
> building individual targets.
After update the code to latest bpf-next. It works this time, the ima_setup.sh
was copied to target folder correctly.
EXT-COPY [test_progs] urandom_read bpf_testmod.ko liburandom_read.so ima_setup.sh btf_dump_test_case_bitfields.c btf_dump_test_case_multidim.c btf_dump_test_case_namespacing.c btf_dump_test_case_ordering.c btf_dump_test_case_packing.c btf_dump_test_case_padding.c btf_dump_test_case_syntax.c
BINARY test_progs
Not sure why the previous kernel doesn't work. But anyway I will drop this patch.
On the other hand, when I build with latest bpf-next. I got error like:
"""
# OUTPUT="/tmp/bpf" make test_progs
BINARY urandom_read gcc -g -O0 -rdynamic -Wall -Werror -DHAVE_GENHDR -I/home/net/tools/testing/selftests/bpf -I/tmp/bpf/tools/include -I/home/net/include/generated -I/home/net/tools/lib -I/home/net/tools/include -I/home/net/tools/include/uapi -I/tmp/bpf urandom_read.c urandom_read_aux.c \
liburandom_read.so -lelf -lz -lrt -lpthread \
-Wl,-rpath=. -Wl,--build-id=sha1 -o /tmp/bpf/urandom_read
/usr/bin/ld: cannot find liburandom_read.so: No such file or directory collect2: error: ld returned 1 exit status
make: *** [Makefile:177: /tmp/bpf/urandom_read] Error 1
# ls /tmp/bpf/liburandom_read.so
/tmp/bpf/liburandom_read.so
"""
after I copy to liburandom_read.so back to tools/testing/selftests/bpf the build
success.
"""
# cp /tmp/bpf/liburandom_read.so /home/net/tools/testing/selftests/bpf/
# gcc -g -O0 -rdynamic -Wall -Werror -DHAVE_GENHDR -I/home/net/tools/testing/selftests/bpf -I/tmp/bpf/tools/include -I/home/net/include/generated -I/home/net/tools/lib -I/home/net/tools/include -I/home/net/tools/include/uapi -I/tmp/bpf urandom_read.c urandom_read_aux.c liburandom_read.so -lelf -lz -lrt -lpthread -Wl,-rpath=. -Wl,--build-id=sha1 -o /tmp/bpf/urandom_read
# echo $?
0
"""
Do you know why this happens?
Thanks
Hangbin
