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abe0884011
We use print_bpf_insn in user space (bpftool and soon perf), so it'd be nice to keep it generic and strip it off the kernel struct bpf_verifier_env argument. This argument can be safely removed, because its users can use the struct bpf_insn_cbs::private_data to pass it. By changing the argument type we can no longer have clean 'verbose' alias to 'bpf_verifier_log_write' in verifier.c. Instead we're adding the 'verbose' cb_print callback and removing the alias. This way we have new cb_print callback in place, and all the 'verbose(env, ...) calls in verifier.c will cleanly cast to 'verbose(void *, ...)' so no other change is needed. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
48 lines
1.4 KiB
C
48 lines
1.4 KiB
C
/* Copyright (c) 2011-2014 PLUMgrid, http://plumgrid.com
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* Copyright (c) 2016 Facebook
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*/
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#ifndef __BPF_DISASM_H__
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#define __BPF_DISASM_H__
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#include <linux/bpf.h>
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#include <linux/kernel.h>
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#include <linux/stringify.h>
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#ifndef __KERNEL__
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#include <stdio.h>
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#include <string.h>
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#endif
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extern const char *const bpf_alu_string[16];
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extern const char *const bpf_class_string[8];
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const char *func_id_name(int id);
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typedef __printf(2, 3) void (*bpf_insn_print_t)(void *private_data,
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const char *, ...);
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typedef const char *(*bpf_insn_revmap_call_t)(void *private_data,
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const struct bpf_insn *insn);
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typedef const char *(*bpf_insn_print_imm_t)(void *private_data,
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const struct bpf_insn *insn,
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__u64 full_imm);
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struct bpf_insn_cbs {
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bpf_insn_print_t cb_print;
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bpf_insn_revmap_call_t cb_call;
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bpf_insn_print_imm_t cb_imm;
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void *private_data;
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};
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void print_bpf_insn(const struct bpf_insn_cbs *cbs,
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const struct bpf_insn *insn,
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bool allow_ptr_leaks);
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#endif
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