linux/tools
KP Singh 3d08b6f29c bpf: Add selftests for BPF_MODIFY_RETURN
Test for two scenarios:

  * When the fmod_ret program returns 0, the original function should
    be called along with fentry and fexit programs.
  * When the fmod_ret program returns a non-zero value, the original
    function should not be called, no side effect should be observed and
    fentry and fexit programs should be called.

The result from the kernel function call and whether a side-effect is
observed is returned via the retval attr of the BPF_PROG_TEST_RUN (bpf)
syscall.

Signed-off-by: KP Singh <kpsingh@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20200304191853.1529-8-kpsingh@chromium.org
2020-03-04 13:41:06 -08:00
..
accounting
arch tools headers kvm: Sync kvm headers with the kernel sources 2020-02-12 12:41:20 -03:00
bootconfig bootconfig: Add append value operator support 2020-02-21 09:59:39 -05:00
bpf tools/runqslower: Drop copy/pasted BPF_F_CURRENT_CPU definiton 2020-03-04 17:00:06 +01:00
build perf/ui/gtk: Fix gtk2 build 2020-01-14 12:40:33 -03:00
cgroup iocost: Fix iocost_monitor.py due to helper type mismatch 2020-01-17 11:54:35 -08:00
debugging
firewire
firmware
gpio tools: gpio: Correctly add make dependencies for gpio_utils 2019-11-13 13:46:04 +01:00
hv Tools: hv: Reopen the devices if read() or write() returns errors 2020-01-26 22:10:10 -05:00
iio tools: iio: Correctly add make dependency for iio_utils 2019-11-10 17:11:06 +00:00
include bpf: Introduce BPF_MODIFY_RETURN 2020-03-04 13:41:05 -08:00
io_uring
kvm/kvm_stat tools/kvm_stat: Fix kvm_exit filter name 2020-01-23 09:51:06 +01:00
laptop
leds
lib tools/libbpf: Add support for BPF_MODIFY_RETURN 2020-03-04 13:41:05 -08:00
memory-model
nfsd
objtool objtool: Fix ARCH=x86_64 build error 2020-01-22 07:54:57 +01:00
pci tools: PCI: Fix fd leakage 2019-10-29 12:04:18 +00:00
pcmcia
perf perf llvm: Fix script used to obtain kernel make directives to work with new kbuild 2020-02-14 10:06:00 -03:00
power More power manadement updates for 5.6-rc1 2020-01-31 14:36:35 -08:00
scripts
spi
testing bpf: Add selftests for BPF_MODIFY_RETURN 2020-03-04 13:41:06 -08:00
thermal/tmon
time
usb usbip: Fix unsafe unaligned pointer usage 2020-01-09 16:44:26 +01:00
virtio
vm tools/vm/slabinfo: fix sanity checks enabling 2020-01-31 10:30:38 -08:00
wmi
Makefile tools: bootconfig: Add bootconfig command 2020-01-13 13:19:39 -05:00