add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/tools/bpf/bpftool/main.h
..
..
@@ -1,35 +1,5 @@
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-/*
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- * Copyright (C) 2017-2018 Netronome Systems, Inc.
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- *
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- * This software is dual licensed under the GNU General License Version 2,
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- * June 1991 as shown in the file COPYING in the top-level directory of this
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- * source tree or the BSD 2-Clause License provided below.  You have the
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- * option to license this software under the complete terms of either license.
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- *
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- * The BSD 2-Clause License:
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- *
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- *     Redistribution and use in source and binary forms, with or
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- *     without modification, are permitted provided that the following
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- *     conditions are met:
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- *
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- *      1. Redistributions of source code must retain the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer.
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- *
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- *      2. Redistributions in binary form must reproduce the above
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- *         copyright notice, this list of conditions and the following
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- *         disclaimer in the documentation and/or other materials
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- *         provided with the distribution.
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- *
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- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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- * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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- * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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- * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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- * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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- * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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- * SOFTWARE.
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- */
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+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
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+/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
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3
 
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 #ifndef __BPF_TOOL_H
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 #define __BPF_TOOL_H
..
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@@ -44,9 +14,22 @@
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 #include <linux/hashtable.h>
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 #include <tools/libc_compat.h>
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16
 
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+#include <bpf/libbpf.h>
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+
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 #include "json_writer.h"
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20
 
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-#define ptr_to_u64(ptr)	((__u64)(unsigned long)(ptr))
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+/* Make sure we do not use kernel-only integer typedefs */
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+#pragma GCC poison u8 u16 u32 u64 s8 s16 s32 s64
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+
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+static inline __u64 ptr_to_u64(const void *ptr)
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+{
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+	return (__u64)(unsigned long)ptr;
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+}
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+
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+static inline void *u64_to_ptr(__u64 ptr)
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+{
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+	return (void *)(unsigned long)ptr;
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+}
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33
 
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 #define NEXT_ARG()	({ argc--; argv++; if (argc < 0) usage(); })
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 #define NEXT_ARGP()	({ (*argc)--; (*argv)++; if (*argc < 0) usage(); })
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@@ -72,16 +55,30 @@
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 #define BPF_TAG_FMT	"%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx%02hhx"
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 #define HELP_SPEC_PROGRAM						\
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-	"PROG := { id PROG_ID | pinned FILE | tag PROG_TAG }"
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+	"PROG := { id PROG_ID | pinned FILE | tag PROG_TAG | name PROG_NAME }"
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 #define HELP_SPEC_OPTIONS						\
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-	"OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} }"
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+	"OPTIONS := { {-j|--json} [{-p|--pretty}] | {-f|--bpffs} |\n"	\
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+	"\t            {-m|--mapcompat} | {-n|--nomount} }"
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 #define HELP_SPEC_MAP							\
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-	"MAP := { id MAP_ID | pinned FILE }"
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+	"MAP := { id MAP_ID | pinned FILE | name MAP_NAME }"
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+#define HELP_SPEC_LINK							\
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+	"LINK := { id LINK_ID | pinned FILE }"
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66
 
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+extern const char * const prog_type_name[];
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+extern const size_t prog_type_name_size;
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+
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+extern const char * const attach_type_name[__MAX_BPF_ATTACH_TYPE];
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+
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+extern const char * const map_type_name[];
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+extern const size_t map_type_name_size;
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+
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+/* keep in sync with the definition in skeleton/pid_iter.bpf.c */
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 enum bpf_obj_type {
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 	BPF_OBJ_UNKNOWN,
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 	BPF_OBJ_PROG,
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 	BPF_OBJ_MAP,
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+	BPF_OBJ_LINK,
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+	BPF_OBJ_BTF,
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 };
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 extern const char *bin_name;
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@@ -89,15 +86,26 @@
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 extern json_writer_t *json_wtr;
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 extern bool json_output;
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 extern bool show_pinned;
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+extern bool show_pids;
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+extern bool block_mount;
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+extern bool verifier_logs;
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+extern bool relaxed_maps;
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 extern struct pinned_obj_table prog_table;
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 extern struct pinned_obj_table map_table;
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+extern struct pinned_obj_table link_table;
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+extern struct obj_refs_table refs_table;
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-void p_err(const char *fmt, ...);
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-void p_info(const char *fmt, ...);
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+void __printf(1, 2) p_err(const char *fmt, ...);
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+void __printf(1, 2) p_info(const char *fmt, ...);
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 bool is_prefix(const char *pfx, const char *str);
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+int detect_common_prefix(const char *arg, ...);
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 void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep);
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 void usage(void) __noreturn;
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+
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+void set_max_rlimit(void);
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+
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+int mount_tracefs(const char *target);
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 struct pinned_obj_table {
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 	DECLARE_HASHTABLE(table, 16);
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@@ -109,9 +117,35 @@
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 	struct hlist_node hash;
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 };
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+struct obj_refs_table {
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+	DECLARE_HASHTABLE(table, 16);
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+};
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+
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+struct obj_ref {
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+	int pid;
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+	char comm[16];
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+};
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+
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+struct obj_refs {
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+	struct hlist_node node;
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+	__u32 id;
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+	int ref_cnt;
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+	struct obj_ref *refs;
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+};
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+
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+struct btf;
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+struct bpf_line_info;
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+
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 int build_pinned_obj_table(struct pinned_obj_table *table,
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 			   enum bpf_obj_type type);
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 void delete_pinned_obj_table(struct pinned_obj_table *tab);
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+__weak int build_obj_refs_table(struct obj_refs_table *table,
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+				enum bpf_obj_type type);
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+__weak void delete_obj_refs_table(struct obj_refs_table *table);
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+__weak void emit_obj_refs_json(struct obj_refs_table *table, __u32 id,
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+			       json_writer_t *json_wtr);
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+__weak void emit_obj_refs_plain(struct obj_refs_table *table, __u32 id,
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+				const char *prefix);
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 void print_dev_plain(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
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 void print_dev_json(__u32 ifindex, __u64 ns_dev, __u64 ns_inode);
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@@ -126,34 +160,75 @@
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 int get_fd_type(int fd);
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 const char *get_fd_type_name(enum bpf_obj_type type);
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 char *get_fdinfo(int fd, const char *key);
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-int open_obj_pinned(char *path, bool quiet);
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-int open_obj_pinned_any(char *path, enum bpf_obj_type exp_type);
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-int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(__u32));
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+int open_obj_pinned(const char *path, bool quiet);
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+int open_obj_pinned_any(const char *path, enum bpf_obj_type exp_type);
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+int mount_bpffs_for_pin(const char *name);
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+int do_pin_any(int argc, char **argv, int (*get_fd_by_id)(int *, char ***));
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 int do_pin_fd(int fd, const char *name);
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-int do_prog(int argc, char **arg);
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-int do_map(int argc, char **arg);
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-int do_event_pipe(int argc, char **argv);
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-int do_cgroup(int argc, char **arg);
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-int do_perf(int argc, char **arg);
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+/* commands available in bootstrap mode */
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+int do_gen(int argc, char **argv);
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+int do_btf(int argc, char **argv);
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+/* non-bootstrap only commands */
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+int do_prog(int argc, char **arg) __weak;
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+int do_map(int argc, char **arg) __weak;
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+int do_link(int argc, char **arg) __weak;
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+int do_event_pipe(int argc, char **argv) __weak;
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+int do_cgroup(int argc, char **arg) __weak;
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+int do_perf(int argc, char **arg) __weak;
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+int do_net(int argc, char **arg) __weak;
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+int do_tracelog(int argc, char **arg) __weak;
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+int do_feature(int argc, char **argv) __weak;
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+int do_struct_ops(int argc, char **argv) __weak;
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+int do_iter(int argc, char **argv) __weak;
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+
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+int parse_u32_arg(int *argc, char ***argv, __u32 *val, const char *what);
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 int prog_parse_fd(int *argc, char ***argv);
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+int prog_parse_fds(int *argc, char ***argv, int **fds);
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 int map_parse_fd(int *argc, char ***argv);
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+int map_parse_fds(int *argc, char ***argv, int **fds);
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 int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len);
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+struct bpf_prog_linfo;
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+#ifdef HAVE_LIBBFD_SUPPORT
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 void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
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-		       const char *arch);
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+		       const char *arch, const char *disassembler_options,
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+		       const struct btf *btf,
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+		       const struct bpf_prog_linfo *prog_linfo,
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+		       __u64 func_ksym, unsigned int func_idx,
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+		       bool linum);
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+int disasm_init(void);
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+#else
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+static inline
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+void disasm_print_insn(unsigned char *image, ssize_t len, int opcodes,
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+		       const char *arch, const char *disassembler_options,
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+		       const struct btf *btf,
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+		       const struct bpf_prog_linfo *prog_linfo,
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+		       __u64 func_ksym, unsigned int func_idx,
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+		       bool linum)
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+{
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+}
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+static inline int disasm_init(void)
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+{
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+	p_err("No libbfd support");
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+	return -1;
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+}
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+#endif
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 void print_data_json(uint8_t *data, size_t len);
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 void print_hex_data_json(uint8_t *data, size_t len);
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 unsigned int get_page_size(void);
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 unsigned int get_possible_cpus(void);
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-const char *ifindex_to_bfd_name_ns(__u32 ifindex, __u64 ns_dev, __u64 ns_ino);
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+const char *
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+ifindex_to_bfd_params(__u32 ifindex, __u64 ns_dev, __u64 ns_ino,
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+		      const char **opt);
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 struct btf_dumper {
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 	const struct btf *btf;
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 	json_writer_t *jw;
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 	bool is_plain_text;
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+	bool prog_id_as_func_ptr;
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 };
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 /* btf_dumper_type - print data along with type information
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@@ -165,4 +240,22 @@
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  */
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 int btf_dumper_type(const struct btf_dumper *d, __u32 type_id,
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 		    const void *data);
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+void btf_dumper_type_only(const struct btf *btf, __u32 func_type_id,
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+			  char *func_only, int size);
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+
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+void btf_dump_linfo_plain(const struct btf *btf,
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+			  const struct bpf_line_info *linfo,
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+			  const char *prefix, bool linum);
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+void btf_dump_linfo_json(const struct btf *btf,
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+			 const struct bpf_line_info *linfo, bool linum);
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+
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+struct nlattr;
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+struct ifinfomsg;
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+struct tcmsg;
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+int do_xdp_dump(struct ifinfomsg *ifinfo, struct nlattr **tb);
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+int do_filter_dump(struct tcmsg *ifinfo, struct nlattr **tb, const char *kind,
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+		   const char *devname, int ifindex);
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+
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+int print_all_levels(__maybe_unused enum libbpf_print_level level,
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+		     const char *format, va_list args);
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 #endif