^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* Copyright (C) 2019 Facebook */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) #include <errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) #include <fcntl.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <stdbool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <stdio.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <string.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <unistd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <bpf/bpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <bpf/btf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <bpf/libbpf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/btf.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/hashtable.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <sys/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <sys/stat.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "json_writer.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "main.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) static const char * const btf_kind_str[NR_BTF_KINDS] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) [BTF_KIND_UNKN] = "UNKNOWN",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) [BTF_KIND_INT] = "INT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) [BTF_KIND_PTR] = "PTR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) [BTF_KIND_ARRAY] = "ARRAY",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) [BTF_KIND_STRUCT] = "STRUCT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) [BTF_KIND_UNION] = "UNION",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) [BTF_KIND_ENUM] = "ENUM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) [BTF_KIND_FWD] = "FWD",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) [BTF_KIND_TYPEDEF] = "TYPEDEF",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) [BTF_KIND_VOLATILE] = "VOLATILE",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) [BTF_KIND_CONST] = "CONST",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) [BTF_KIND_RESTRICT] = "RESTRICT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) [BTF_KIND_FUNC] = "FUNC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) [BTF_KIND_FUNC_PROTO] = "FUNC_PROTO",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) [BTF_KIND_VAR] = "VAR",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) [BTF_KIND_DATASEC] = "DATASEC",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct btf_attach_table {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) DECLARE_HASHTABLE(table, 16);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct btf_attach_point {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) __u32 obj_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) __u32 btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct hlist_node hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static const char *btf_int_enc_str(__u8 encoding)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) switch (encoding) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) case 0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) return "(none)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) case BTF_INT_SIGNED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) return "SIGNED";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) case BTF_INT_CHAR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) return "CHAR";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) case BTF_INT_BOOL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) return "BOOL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) return "UNKN";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static const char *btf_var_linkage_str(__u32 linkage)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) switch (linkage) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) case BTF_VAR_STATIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return "static";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) case BTF_VAR_GLOBAL_ALLOCATED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) return "global-alloc";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) return "(unknown)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static const char *btf_func_linkage_str(const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) switch (btf_vlen(t)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) case BTF_FUNC_STATIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return "static";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) case BTF_FUNC_GLOBAL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) return "global";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) case BTF_FUNC_EXTERN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return "extern";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return "(unknown)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static const char *btf_str(const struct btf *btf, __u32 off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) if (!off)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) return "(anon)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) return btf__name_by_offset(btf, off) ? : "(invalid)";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) static int dump_btf_type(const struct btf *btf, __u32 id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) const struct btf_type *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) json_writer_t *w = json_wtr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) int kind, safe_kind;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) kind = BTF_INFO_KIND(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) safe_kind = kind <= BTF_KIND_MAX ? kind : BTF_KIND_UNKN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) jsonw_start_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) jsonw_uint_field(w, "id", id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) jsonw_string_field(w, "kind", btf_kind_str[safe_kind]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) jsonw_string_field(w, "name", btf_str(btf, t->name_off));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) printf("[%u] %s '%s'", id, btf_kind_str[safe_kind],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) btf_str(btf, t->name_off));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) switch (BTF_INFO_KIND(t->info)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) case BTF_KIND_INT: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) __u32 v = *(__u32 *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) const char *enc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) enc = btf_int_enc_str(BTF_INT_ENCODING(v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) jsonw_uint_field(w, "size", t->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) jsonw_uint_field(w, "bits_offset", BTF_INT_OFFSET(v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) jsonw_uint_field(w, "nr_bits", BTF_INT_BITS(v));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) jsonw_string_field(w, "encoding", enc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) printf(" size=%u bits_offset=%u nr_bits=%u encoding=%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) t->size, BTF_INT_OFFSET(v), BTF_INT_BITS(v),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) enc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) case BTF_KIND_PTR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) case BTF_KIND_CONST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) case BTF_KIND_VOLATILE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) case BTF_KIND_RESTRICT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) case BTF_KIND_TYPEDEF:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) jsonw_uint_field(w, "type_id", t->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) printf(" type_id=%u", t->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) case BTF_KIND_ARRAY: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) const struct btf_array *arr = (const void *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) jsonw_uint_field(w, "type_id", arr->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) jsonw_uint_field(w, "index_type_id", arr->index_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) jsonw_uint_field(w, "nr_elems", arr->nelems);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) printf(" type_id=%u index_type_id=%u nr_elems=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) arr->type, arr->index_type, arr->nelems);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) case BTF_KIND_STRUCT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) case BTF_KIND_UNION: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) const struct btf_member *m = (const void *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) __u16 vlen = BTF_INFO_VLEN(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) jsonw_uint_field(w, "size", t->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) jsonw_uint_field(w, "vlen", vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) jsonw_name(w, "members");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) jsonw_start_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) printf(" size=%u vlen=%u", t->size, vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) for (i = 0; i < vlen; i++, m++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) const char *name = btf_str(btf, m->name_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) __u32 bit_off, bit_sz;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (BTF_INFO_KFLAG(t->info)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) bit_off = BTF_MEMBER_BIT_OFFSET(m->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) bit_sz = BTF_MEMBER_BITFIELD_SIZE(m->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) bit_off = m->offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) bit_sz = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) jsonw_start_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) jsonw_string_field(w, "name", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) jsonw_uint_field(w, "type_id", m->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) jsonw_uint_field(w, "bits_offset", bit_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) if (bit_sz) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) jsonw_uint_field(w, "bitfield_size",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) bit_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) jsonw_end_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) printf("\n\t'%s' type_id=%u bits_offset=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) name, m->type, bit_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) if (bit_sz)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) printf(" bitfield_size=%u", bit_sz);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) jsonw_end_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) case BTF_KIND_ENUM: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) const struct btf_enum *v = (const void *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) __u16 vlen = BTF_INFO_VLEN(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) jsonw_uint_field(w, "size", t->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) jsonw_uint_field(w, "vlen", vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) jsonw_name(w, "values");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) jsonw_start_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) printf(" size=%u vlen=%u", t->size, vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) for (i = 0; i < vlen; i++, v++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) const char *name = btf_str(btf, v->name_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) jsonw_start_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) jsonw_string_field(w, "name", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) jsonw_uint_field(w, "val", v->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) jsonw_end_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) printf("\n\t'%s' val=%u", name, v->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) jsonw_end_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) case BTF_KIND_FWD: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) const char *fwd_kind = BTF_INFO_KFLAG(t->info) ? "union"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) : "struct";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) jsonw_string_field(w, "fwd_kind", fwd_kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) printf(" fwd_kind=%s", fwd_kind);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) case BTF_KIND_FUNC: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) const char *linkage = btf_func_linkage_str(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) jsonw_uint_field(w, "type_id", t->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) jsonw_string_field(w, "linkage", linkage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) printf(" type_id=%u linkage=%s", t->type, linkage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) case BTF_KIND_FUNC_PROTO: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) const struct btf_param *p = (const void *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) __u16 vlen = BTF_INFO_VLEN(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) jsonw_uint_field(w, "ret_type_id", t->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) jsonw_uint_field(w, "vlen", vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) jsonw_name(w, "params");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) jsonw_start_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) printf(" ret_type_id=%u vlen=%u", t->type, vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) for (i = 0; i < vlen; i++, p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) const char *name = btf_str(btf, p->name_off);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) jsonw_start_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) jsonw_string_field(w, "name", name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) jsonw_uint_field(w, "type_id", p->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) jsonw_end_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) printf("\n\t'%s' type_id=%u", name, p->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) jsonw_end_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) case BTF_KIND_VAR: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) const struct btf_var *v = (const void *)(t + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) const char *linkage;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) linkage = btf_var_linkage_str(v->linkage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) jsonw_uint_field(w, "type_id", t->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) jsonw_string_field(w, "linkage", linkage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) printf(" type_id=%u, linkage=%s", t->type, linkage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) case BTF_KIND_DATASEC: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) const struct btf_var_secinfo *v = (const void *)(t+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) __u16 vlen = BTF_INFO_VLEN(t->info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) jsonw_uint_field(w, "size", t->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) jsonw_uint_field(w, "vlen", vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) jsonw_name(w, "vars");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) jsonw_start_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) printf(" size=%u vlen=%u", t->size, vlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) for (i = 0; i < vlen; i++, v++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) jsonw_start_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) jsonw_uint_field(w, "type_id", v->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) jsonw_uint_field(w, "offset", v->offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) jsonw_uint_field(w, "size", v->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) jsonw_end_object(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) printf("\n\ttype_id=%u offset=%u size=%u",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) v->type, v->offset, v->size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) jsonw_end_array(w);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) jsonw_end_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) static int dump_btf_raw(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) __u32 *root_type_ids, int root_type_cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) const struct btf_type *t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) jsonw_start_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) jsonw_name(json_wtr, "types");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) jsonw_start_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) if (root_type_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) for (i = 0; i < root_type_cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) t = btf__type_by_id(btf, root_type_ids[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) dump_btf_type(btf, root_type_ids[i], t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) int cnt = btf__get_nr_types(btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) for (i = 1; i <= cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) t = btf__type_by_id(btf, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) dump_btf_type(btf, i, t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) jsonw_end_array(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) jsonw_end_object(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) static void __printf(2, 0) btf_dump_printf(void *ctx,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) const char *fmt, va_list args)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) vfprintf(stdout, fmt, args);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static int dump_btf_c(const struct btf *btf,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) __u32 *root_type_ids, int root_type_cnt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) struct btf_dump *d;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int err = 0, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) d = btf_dump__new(btf, NULL, NULL, btf_dump_printf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) if (IS_ERR(d))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return PTR_ERR(d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) printf("#ifndef __VMLINUX_H__\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) printf("#define __VMLINUX_H__\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) printf("#ifndef BPF_NO_PRESERVE_ACCESS_INDEX\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) printf("#pragma clang attribute push (__attribute__((preserve_access_index)), apply_to = record)\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) printf("#endif\n\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) if (root_type_cnt) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) for (i = 0; i < root_type_cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) err = btf_dump__dump_type(d, root_type_ids[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) int cnt = btf__get_nr_types(btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) for (i = 1; i <= cnt; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) err = btf_dump__dump_type(d, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) printf("#ifndef BPF_NO_PRESERVE_ACCESS_INDEX\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) printf("#pragma clang attribute pop\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) printf("#endif\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) printf("#endif /* __VMLINUX_H__ */\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) btf_dump__free(d);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) static int do_dump(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) struct btf *btf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) __u32 root_type_ids[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) int root_type_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) bool dump_c = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) __u32 btf_id = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) const char *src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) int fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) if (!REQ_ARGS(2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) usage();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) src = GET_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (is_prefix(src, "map")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct bpf_map_info info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) __u32 len = sizeof(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (!REQ_ARGS(2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) usage();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) fd = map_parse_fd_and_info(&argc, &argv, &info, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) btf_id = info.btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) if (argc && is_prefix(*argv, "key")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) root_type_ids[root_type_cnt++] = info.btf_key_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) } else if (argc && is_prefix(*argv, "value")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) root_type_ids[root_type_cnt++] = info.btf_value_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) } else if (argc && is_prefix(*argv, "all")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) } else if (argc && is_prefix(*argv, "kv")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) root_type_ids[root_type_cnt++] = info.btf_key_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) root_type_ids[root_type_cnt++] = info.btf_value_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) root_type_ids[root_type_cnt++] = info.btf_key_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) root_type_ids[root_type_cnt++] = info.btf_value_type_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) } else if (is_prefix(src, "prog")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct bpf_prog_info info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) __u32 len = sizeof(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) if (!REQ_ARGS(2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) usage();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) fd = prog_parse_fd(&argc, &argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) err = bpf_obj_get_info_by_fd(fd, &info, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) p_err("can't get prog info: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) btf_id = info.btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) } else if (is_prefix(src, "id")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) char *endptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) btf_id = strtoul(*argv, &endptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) if (*endptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) p_err("can't parse %s as ID", *argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) } else if (is_prefix(src, "file")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) btf = btf__parse(*argv, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) if (IS_ERR(btf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) err = -PTR_ERR(btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) btf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) p_err("failed to load BTF from %s: %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) *argv, strerror(err));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) p_err("unrecognized BTF source specifier: '%s'", src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) while (argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) if (is_prefix(*argv, "format")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (argc < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) p_err("expecting value for 'format' option\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) if (strcmp(*argv, "c") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) dump_c = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) } else if (strcmp(*argv, "raw") == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) dump_c = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) p_err("unrecognized format specifier: '%s', possible values: raw, c",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) *argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) NEXT_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) p_err("unrecognized option: '%s'", *argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) err = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) if (!btf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) err = btf__get_from_id(btf_id, &btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) p_err("get btf by id (%u): %s", btf_id, strerror(err));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) if (!btf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) err = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) p_err("can't find btf with ID (%u)", btf_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) if (dump_c) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) p_err("JSON output for C-syntax dump is not supported");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) err = -ENOTSUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) goto done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) err = dump_btf_c(btf, root_type_ids, root_type_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) err = dump_btf_raw(btf, root_type_ids, root_type_cnt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) done:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) btf__free(btf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) static int btf_parse_fd(int *argc, char ***argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) unsigned int id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) char *endptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) if (!is_prefix(*argv[0], "id")) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) p_err("expected 'id', got: '%s'?", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) id = strtoul(**argv, &endptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) if (*endptr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) p_err("can't parse %s as ID", **argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) NEXT_ARGP();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) fd = bpf_btf_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) p_err("can't get BTF object by id (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) return fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) static void delete_btf_table(struct btf_attach_table *tab)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) struct btf_attach_point *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) struct hlist_node *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) unsigned int bkt;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) hash_for_each_safe(tab->table, bkt, tmp, obj, hash) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) hash_del(&obj->hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) free(obj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) build_btf_type_table(struct btf_attach_table *tab, enum bpf_obj_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) void *info, __u32 *len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) static const char * const names[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618) [BPF_OBJ_UNKNOWN] = "unknown",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) [BPF_OBJ_PROG] = "prog",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) [BPF_OBJ_MAP] = "map",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) struct btf_attach_point *obj_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) __u32 btf_id, id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) int fd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) case BPF_OBJ_PROG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) err = bpf_prog_get_next_id(id, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) case BPF_OBJ_MAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) err = bpf_map_get_next_id(id, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) p_err("unexpected object type: %d", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) if (errno == ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) p_err("can't get next %s: %s%s", names[type],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) strerror(errno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) errno == EINVAL ? " -- kernel too old?" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) case BPF_OBJ_PROG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) fd = bpf_prog_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) case BPF_OBJ_MAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) fd = bpf_map_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) p_err("unexpected object type: %d", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) if (errno == ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) p_err("can't get %s by id (%u): %s", names[type], id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) memset(info, 0, *len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) err = bpf_obj_get_info_by_fd(fd, info, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) p_err("can't get %s info: %s", names[type],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) switch (type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) case BPF_OBJ_PROG:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) btf_id = ((struct bpf_prog_info *)info)->btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) case BPF_OBJ_MAP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) btf_id = ((struct bpf_map_info *)info)->btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) p_err("unexpected object type: %d", type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (!btf_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) obj_node = calloc(1, sizeof(*obj_node));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) if (!obj_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) p_err("failed to allocate memory: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) goto err_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) obj_node->obj_id = id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) obj_node->btf_id = btf_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) hash_add(tab->table, &obj_node->hash, obj_node->btf_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) err_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) delete_btf_table(tab);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) build_btf_tables(struct btf_attach_table *btf_prog_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) struct btf_attach_table *btf_map_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) struct bpf_prog_info prog_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) __u32 prog_len = sizeof(prog_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) struct bpf_map_info map_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) __u32 map_len = sizeof(map_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) err = build_btf_type_table(btf_prog_table, BPF_OBJ_PROG, &prog_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) &prog_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) err = build_btf_type_table(btf_map_table, BPF_OBJ_MAP, &map_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) &map_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) delete_btf_table(btf_prog_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) show_btf_plain(struct bpf_btf_info *info, int fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) struct btf_attach_table *btf_prog_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) struct btf_attach_table *btf_map_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) struct btf_attach_point *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) int n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) printf("%u: ", info->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) printf("size %uB", info->btf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) hash_for_each_possible(btf_prog_table->table, obj, hash, info->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) if (obj->btf_id == info->id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) printf("%s%u", n++ == 0 ? " prog_ids " : ",",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) obj->obj_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) n = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) hash_for_each_possible(btf_map_table->table, obj, hash, info->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) if (obj->btf_id == info->id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) printf("%s%u", n++ == 0 ? " map_ids " : ",",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) obj->obj_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) emit_obj_refs_plain(&refs_table, info->id, "\n\tpids ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) printf("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) show_btf_json(struct bpf_btf_info *info, int fd,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) struct btf_attach_table *btf_prog_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) struct btf_attach_table *btf_map_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) struct btf_attach_point *obj;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) jsonw_start_object(json_wtr); /* btf object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) jsonw_uint_field(json_wtr, "id", info->id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) jsonw_uint_field(json_wtr, "size", info->btf_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) jsonw_name(json_wtr, "prog_ids");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) jsonw_start_array(json_wtr); /* prog_ids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) hash_for_each_possible(btf_prog_table->table, obj, hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) info->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) if (obj->btf_id == info->id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) jsonw_uint(json_wtr, obj->obj_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) jsonw_end_array(json_wtr); /* prog_ids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) jsonw_name(json_wtr, "map_ids");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) jsonw_start_array(json_wtr); /* map_ids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) hash_for_each_possible(btf_map_table->table, obj, hash,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) info->id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) if (obj->btf_id == info->id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) jsonw_uint(json_wtr, obj->obj_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) jsonw_end_array(json_wtr); /* map_ids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) emit_obj_refs_json(&refs_table, info->id, json_wtr); /* pids */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) jsonw_end_object(json_wtr); /* btf object */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) show_btf(int fd, struct btf_attach_table *btf_prog_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) struct btf_attach_table *btf_map_table)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) struct bpf_btf_info info = {};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) __u32 len = sizeof(info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) err = bpf_obj_get_info_by_fd(fd, &info, &len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) p_err("can't get BTF object info: %s", strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) show_btf_json(&info, fd, btf_prog_table, btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) show_btf_plain(&info, fd, btf_prog_table, btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) static int do_show(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) struct btf_attach_table btf_prog_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) struct btf_attach_table btf_map_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) int err, fd = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) __u32 id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (argc == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) fd = btf_parse_fd(&argc, &argv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (fd < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) if (argc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) if (fd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) return BAD_ARG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) hash_init(btf_prog_table.table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) hash_init(btf_map_table.table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) err = build_btf_tables(&btf_prog_table, &btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (fd >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) build_obj_refs_table(&refs_table, BPF_OBJ_BTF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) if (fd >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) err = show_btf(fd, &btf_prog_table, &btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) goto exit_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) jsonw_start_array(json_wtr); /* root array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) while (true) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) err = bpf_btf_get_next_id(id, &id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) if (err) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) if (errno == ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) p_err("can't get next BTF object: %s%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) strerror(errno),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) errno == EINVAL ? " -- kernel too old?" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) fd = bpf_btf_get_fd_by_id(id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) if (fd < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) if (errno == ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) p_err("can't get BTF object by id (%u): %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) id, strerror(errno));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) err = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) err = show_btf(fd, &btf_prog_table, &btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) close(fd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) if (json_output)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) jsonw_end_array(json_wtr); /* root array */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) exit_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) delete_btf_table(&btf_prog_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) delete_btf_table(&btf_map_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) delete_obj_refs_table(&refs_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) static int do_help(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) if (json_output) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) jsonw_null(json_wtr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) fprintf(stderr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) "Usage: %1$s %2$s { show | list } [id BTF_ID]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) " %1$s %2$s dump BTF_SRC [format FORMAT]\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) " %1$s %2$s help\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) " BTF_SRC := { id BTF_ID | prog PROG | map MAP [{key | value | kv | all}] | file FILE }\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) " FORMAT := { raw | c }\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) " " HELP_SPEC_MAP "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) " " HELP_SPEC_PROGRAM "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) " " HELP_SPEC_OPTIONS "\n"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) "",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) bin_name, "btf");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) static const struct cmd cmds[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) { "show", do_show },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) { "list", do_show },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) { "help", do_help },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) { "dump", do_dump },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) { 0 }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) int do_btf(int argc, char **argv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return cmd_select(cmds, argc, argv, do_help);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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