55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
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* Common eBPF ELF object loading operations.
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*
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* Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
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* Copyright (C) 2015 Wang Nan <wangnan0@huawei.com>
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* Copyright (C) 2015 Huawei Inc.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <string.h>
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#include <unistd.h>
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#include <asm/unistd.h>
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#include <linux/bpf.h>
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#include "libbpf.h"
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#define __printf(a, b) __attribute__((format(printf, a, b)))
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__printf(1, 2)
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static int __base_pr(const char *format, ...)
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{
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va_list args;
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int err;
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va_start(args, format);
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err = vfprintf(stderr, format, args);
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va_end(args);
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return err;
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}
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static __printf(1, 2) libbpf_print_fn_t __pr_warning = __base_pr;
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static __printf(1, 2) libbpf_print_fn_t __pr_info = __base_pr;
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static __printf(1, 2) libbpf_print_fn_t __pr_debug;
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#define __pr(func, fmt, ...) \
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do { \
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if ((func)) \
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(func)("libbpf: " fmt, ##__VA_ARGS__); \
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} while (0)
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#define pr_warning(fmt, ...) __pr(__pr_warning, fmt, ##__VA_ARGS__)
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#define pr_info(fmt, ...) __pr(__pr_info, fmt, ##__VA_ARGS__)
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#define pr_debug(fmt, ...) __pr(__pr_debug, fmt, ##__VA_ARGS__)
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void libbpf_set_print(libbpf_print_fn_t warn,
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libbpf_print_fn_t info,
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libbpf_print_fn_t debug)
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{
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__pr_warning = warn;
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__pr_info = info;
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__pr_debug = debug;
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}
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