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selftests/bpf: fix broken build

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Recent merge of 'linux-kselftest-4.11-rc1' tree broke bpf test build.
None of the tests were building and test_verifier.c had tons of compiler errors.
Fix it and add #ifdef CAP_IS_SUPPORTED to support old versions of libcap.
Tested on centos 6.8 and 7

Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Tested-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexei Starovoitov 2017-03-10 22:05:55 -08:00 committed by David S. Miller
parent 79099aab38
commit 1da8ac7c49
3 changed files with 25 additions and 1 deletions
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18
tools/include/uapi/linux/bpf_perf_event.h Normal file
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@ -0,0 +1,18 @@
/* Copyright (c) 2016 Facebook
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of version 2 of the GNU General Public
* License as published by the Free Software Foundation.
*/
#ifndef _UAPI__LINUX_BPF_PERF_EVENT_H__
#define _UAPI__LINUX_BPF_PERF_EVENT_H__
#include <linux/types.h>
#include <linux/ptrace.h>
struct bpf_perf_event_data {
struct pt_regs regs;
__u64 sample_period;
};
#endif /* _UAPI__LINUX_BPF_PERF_EVENT_H__ */

4
tools/testing/selftests/bpf/Makefile
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@ -1,12 +1,14 @@
LIBDIR := ../../../lib
BPFOBJ := $(LIBDIR)/bpf/bpf.o
CFLAGS += -Wall -O2 -lcap -I../../../include/uapi -I$(LIBDIR)
CFLAGS += -Wall -O2 -lcap -I../../../include/uapi -I$(LIBDIR) $(BPFOBJ)
TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map
TEST_PROGS := test_kmod.sh
all: $(TEST_GEN_PROGS)
.PHONY: all clean force
# force a rebuild of BPFOBJ when its dependencies are updated

4
tools/testing/selftests/bpf/test_verifier.c
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@ -8,6 +8,8 @@
* License as published by the Free Software Foundation.
*/
#include <asm/types.h>
#include <linux/types.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
@ -4583,10 +4585,12 @@ static bool is_admin(void)
cap_flag_value_t sysadmin = CAP_CLEAR;
const cap_value_t cap_val = CAP_SYS_ADMIN;
#ifdef CAP_IS_SUPPORTED
if (!CAP_IS_SUPPORTED(CAP_SETFCAP)) {
perror("cap_get_flag");
return false;
}
#endif
caps = cap_get_proc();
if (!caps) {
perror("cap_get_proc");