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TOMOYO Linux Cross Reference
Linux/tools/bpf/bpftool/main.h

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  1 /*
  2  * Copyright (C) 2017 Netronome Systems, Inc.
  3  *
  4  * This software is dual licensed under the GNU General License Version 2,
  5  * June 1991 as shown in the file COPYING in the top-level directory of this
  6  * source tree or the BSD 2-Clause License provided below.  You have the
  7  * option to license this software under the complete terms of either license.
  8  *
  9  * The BSD 2-Clause License:
 10  *
 11  *     Redistribution and use in source and binary forms, with or
 12  *     without modification, are permitted provided that the following
 13  *     conditions are met:
 14  *
 15  *      1. Redistributions of source code must retain the above
 16  *         copyright notice, this list of conditions and the following
 17  *         disclaimer.
 18  *
 19  *      2. Redistributions in binary form must reproduce the above
 20  *         copyright notice, this list of conditions and the following
 21  *         disclaimer in the documentation and/or other materials
 22  *         provided with the distribution.
 23  *
 24  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 25  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 26  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 27  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
 28  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
 29  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 30  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 31  * SOFTWARE.
 32  */
 33 
 34 /* Author: Jakub Kicinski <kubakici@wp.pl> */
 35 
 36 #ifndef __BPF_TOOL_H
 37 #define __BPF_TOOL_H
 38 
 39 /* BFD and kernel.h both define GCC_VERSION, differently */
 40 #undef GCC_VERSION
 41 #include <stdbool.h>
 42 #include <stdio.h>
 43 #include <linux/bpf.h>
 44 #include <linux/compiler.h>
 45 #include <linux/kernel.h>
 46 #include <linux/hashtable.h>
 47 
 48 #include "json_writer.h"
 49 
 50 #define ptr_to_u64(ptr) ((__u64)(unsigned long)(ptr))
 51 
 52 #define NEXT_ARG()      ({ argc--; argv++; if (argc < 0) usage(); })
 53 #define NEXT_ARGP()     ({ (*argc)--; (*argv)++; if (*argc < 0) usage(); })
 54 #define BAD_ARG()       ({ p_err("what is '%s'?", *argv); -1; })
 55 
 56 #define ERR_MAX_LEN     1024
 57 
 58 #define BPF_TAG_FMT     "%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
 59 
 60 #define HELP_SPEC_PROGRAM                                               \
 61         "PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }"
 62 #define HELP_SPEC_OPTIONS                                               \
 63         "OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} }"
 64 
 65 enum bpf_obj_type {
 66         BPF_OBJ_UNKNOWN,
 67         BPF_OBJ_PROG,
 68         BPF_OBJ_MAP,
 69 };
 70 
 71 extern const char *bin_name;
 72 
 73 extern json_writer_t *json_wtr;
 74 extern bool json_output;
 75 extern bool show_pinned;
 76 extern struct pinned_obj_table prog_table;
 77 extern struct pinned_obj_table map_table;
 78 
 79 void p_err(const char *fmt, ...);
 80 void p_info(const char *fmt, ...);
 81 
 82 bool is_prefix(const char *pfx, const char *str);
 83 void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep);
 84 void usage(void) __noreturn;
 85 
 86 struct pinned_obj_table {
 87         DECLARE_HASHTABLE(table, 16);
 88 };
 89 
 90 struct pinned_obj {
 91         __u32 id;
 92         char *path;
 93         struct hlist_node hash;
 94 };
 95 
 96 int build_pinned_obj_table(struct pinned_obj_table *table,
 97                            enum bpf_obj_type type);
 98 void delete_pinned_obj_table(struct pinned_obj_table *tab);
 99 void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
100 void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
101 
102 struct cmd {
103         const char *cmd;
104         int (*func)(int argc, char **argv);
105 };
106 
107 int cmd_select(const struct cmd *cmds, int argc, char **argv,
108                int (*help)(int argc, char **argv));
109 
110 int get_fd_type(int fd);
111 const char *get_fd_type_name(enum bpf_obj_type type);
112 char *get_fdinfo(int fd, const char *key);
113 int open_obj_pinned(char *path);
114 int open_obj_pinned_any(char *path, enum bpf_obj_type exp_type);
115 int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(__u32));
116 int do_pin_fd(int fd, const char *name);
117 
118 int do_prog(int argc, char **arg);
119 int do_map(int argc, char **arg);
120 int do_cgroup(int argc, char **arg);
121 
122 int prog_parse_fd(int *argc, char ***argv);
123 
124 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
125                        const char *arch);
126 void print_hex_data_json(uint8_t *data, size_t len);
127 
128 const char *ifindex_to_bfd_name_ns(__u32 ifindex, __u64 ns_dev, __u64 ns_ino);
129 
130 #endif
131 

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