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-rw-r--r--tools/bpf/bpftool/prog.c149
1 files changed, 107 insertions, 42 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index 4e04699a2350..b73b4e473948 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -54,30 +54,6 @@
#include "main.h"
#include "xlated_dumper.h"
-static const char * const prog_type_name[] = {
- [BPF_PROG_TYPE_UNSPEC] = "unspec",
- [BPF_PROG_TYPE_SOCKET_FILTER] = "socket_filter",
- [BPF_PROG_TYPE_KPROBE] = "kprobe",
- [BPF_PROG_TYPE_SCHED_CLS] = "sched_cls",
- [BPF_PROG_TYPE_SCHED_ACT] = "sched_act",
- [BPF_PROG_TYPE_TRACEPOINT] = "tracepoint",
- [BPF_PROG_TYPE_XDP] = "xdp",
- [BPF_PROG_TYPE_PERF_EVENT] = "perf_event",
- [BPF_PROG_TYPE_CGROUP_SKB] = "cgroup_skb",
- [BPF_PROG_TYPE_CGROUP_SOCK] = "cgroup_sock",
- [BPF_PROG_TYPE_LWT_IN] = "lwt_in",
- [BPF_PROG_TYPE_LWT_OUT] = "lwt_out",
- [BPF_PROG_TYPE_LWT_XMIT] = "lwt_xmit",
- [BPF_PROG_TYPE_SOCK_OPS] = "sock_ops",
- [BPF_PROG_TYPE_SK_SKB] = "sk_skb",
- [BPF_PROG_TYPE_CGROUP_DEVICE] = "cgroup_device",
- [BPF_PROG_TYPE_SK_MSG] = "sk_msg",
- [BPF_PROG_TYPE_RAW_TRACEPOINT] = "raw_tracepoint",
- [BPF_PROG_TYPE_CGROUP_SOCK_ADDR] = "cgroup_sock_addr",
- [BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
- [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector",
-};
-
static const char * const attach_type_strings[] = {
[BPF_SK_SKB_STREAM_PARSER] = "stream_parser",
[BPF_SK_SKB_STREAM_VERDICT] = "stream_verdict",
@@ -447,24 +423,26 @@ static int do_show(int argc, char **argv)
static int do_dump(int argc, char **argv)
{
+ unsigned int finfo_rec_size, linfo_rec_size, jited_linfo_rec_size;
+ void *func_info = NULL, *linfo = NULL, *jited_linfo = NULL;
+ unsigned int nr_finfo, nr_linfo = 0, nr_jited_linfo = 0;
+ struct bpf_prog_linfo *prog_linfo = NULL;
unsigned long *func_ksyms = NULL;
struct bpf_prog_info info = {};
unsigned int *func_lens = NULL;
const char *disasm_opt = NULL;
- unsigned int finfo_rec_size;
unsigned int nr_func_ksyms;
unsigned int nr_func_lens;
struct dump_data dd = {};
__u32 len = sizeof(info);
struct btf *btf = NULL;
- void *func_info = NULL;
- unsigned int finfo_cnt;
unsigned int buf_size;
char *filepath = NULL;
bool opcodes = false;
bool visual = false;
char func_sig[1024];
unsigned char *buf;
+ bool linum = false;
__u32 *member_len;
__u64 *member_ptr;
ssize_t n;
@@ -508,6 +486,9 @@ static int do_dump(int argc, char **argv)
} else if (is_prefix(*argv, "visual")) {
visual = true;
NEXT_ARG();
+ } else if (is_prefix(*argv, "linum")) {
+ linum = true;
+ NEXT_ARG();
}
if (argc) {
@@ -556,10 +537,10 @@ static int do_dump(int argc, char **argv)
}
}
- finfo_cnt = info.func_info_cnt;
+ nr_finfo = info.nr_func_info;
finfo_rec_size = info.func_info_rec_size;
- if (finfo_cnt && finfo_rec_size) {
- func_info = malloc(finfo_cnt * finfo_rec_size);
+ if (nr_finfo && finfo_rec_size) {
+ func_info = malloc(nr_finfo * finfo_rec_size);
if (!func_info) {
p_err("mem alloc failed");
close(fd);
@@ -567,6 +548,32 @@ static int do_dump(int argc, char **argv)
}
}
+ linfo_rec_size = info.line_info_rec_size;
+ if (info.nr_line_info && linfo_rec_size && info.btf_id) {
+ nr_linfo = info.nr_line_info;
+ linfo = malloc(nr_linfo * linfo_rec_size);
+ if (!linfo) {
+ p_err("mem alloc failed");
+ close(fd);
+ goto err_free;
+ }
+ }
+
+ jited_linfo_rec_size = info.jited_line_info_rec_size;
+ if (info.nr_jited_line_info &&
+ jited_linfo_rec_size &&
+ info.nr_jited_ksyms &&
+ info.nr_jited_func_lens &&
+ info.btf_id) {
+ nr_jited_linfo = info.nr_jited_line_info;
+ jited_linfo = malloc(nr_jited_linfo * jited_linfo_rec_size);
+ if (!jited_linfo) {
+ p_err("mem alloc failed");
+ close(fd);
+ goto err_free;
+ }
+ }
+
memset(&info, 0, sizeof(info));
*member_ptr = ptr_to_u64(buf);
@@ -575,9 +582,15 @@ static int do_dump(int argc, char **argv)
info.nr_jited_ksyms = nr_func_ksyms;
info.jited_func_lens = ptr_to_u64(func_lens);
info.nr_jited_func_lens = nr_func_lens;
- info.func_info_cnt = finfo_cnt;
+ info.nr_func_info = nr_finfo;
info.func_info_rec_size = finfo_rec_size;
info.func_info = ptr_to_u64(func_info);
+ info.nr_line_info = nr_linfo;
+ info.line_info_rec_size = linfo_rec_size;
+ info.line_info = ptr_to_u64(linfo);
+ info.nr_jited_line_info = nr_jited_linfo;
+ info.jited_line_info_rec_size = jited_linfo_rec_size;
+ info.jited_line_info = ptr_to_u64(jited_linfo);
err = bpf_obj_get_info_by_fd(fd, &info, &len);
close(fd);
@@ -601,9 +614,9 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
- if (info.func_info_cnt != finfo_cnt) {
- p_err("incorrect func_info_cnt %d vs. expected %d",
- info.func_info_cnt, finfo_cnt);
+ if (info.nr_func_info != nr_finfo) {
+ p_err("incorrect nr_func_info %d vs. expected %d",
+ info.nr_func_info, nr_finfo);
goto err_free;
}
@@ -613,6 +626,37 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
+ if (func_info && !info.func_info) {
+ /* kernel.kptr_restrict is set. No func_info available. */
+ free(func_info);
+ func_info = NULL;
+ nr_finfo = 0;
+ }
+
+ if (linfo && info.nr_line_info != nr_linfo) {
+ p_err("incorrect nr_line_info %u vs. expected %u",
+ info.nr_line_info, nr_linfo);
+ goto err_free;
+ }
+
+ if (info.line_info_rec_size != linfo_rec_size) {
+ p_err("incorrect line_info_rec_size %u vs. expected %u",
+ info.line_info_rec_size, linfo_rec_size);
+ goto err_free;
+ }
+
+ if (jited_linfo && info.nr_jited_line_info != nr_jited_linfo) {
+ p_err("incorrect nr_jited_line_info %u vs. expected %u",
+ info.nr_jited_line_info, nr_jited_linfo);
+ goto err_free;
+ }
+
+ if (info.jited_line_info_rec_size != jited_linfo_rec_size) {
+ p_err("incorrect jited_line_info_rec_size %u vs. expected %u",
+ info.jited_line_info_rec_size, jited_linfo_rec_size);
+ goto err_free;
+ }
+
if ((member_len == &info.jited_prog_len &&
info.jited_prog_insns == 0) ||
(member_len == &info.xlated_prog_len &&
@@ -626,6 +670,12 @@ static int do_dump(int argc, char **argv)
goto err_free;
}
+ if (nr_linfo) {
+ prog_linfo = bpf_prog_linfo__new(&info);
+ if (!prog_linfo)
+ p_info("error in processing bpf_line_info. continue without it.");
+ }
+
if (filepath) {
fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
if (fd < 0) {
@@ -707,8 +757,11 @@ static int do_dump(int argc, char **argv)
printf("%s:\n", sym_name);
}
- disasm_print_insn(img, lens[i], opcodes, name,
- disasm_opt);
+ disasm_print_insn(img, lens[i], opcodes,
+ name, disasm_opt, btf,
+ prog_linfo, ksyms[i], i,
+ linum);
+
img += lens[i];
if (json_output)
@@ -721,7 +774,7 @@ static int do_dump(int argc, char **argv)
jsonw_end_array(json_wtr);
} else {
disasm_print_insn(buf, *member_len, opcodes, name,
- disasm_opt);
+ disasm_opt, btf, NULL, 0, 0, false);
}
} else if (visual) {
if (json_output)
@@ -735,11 +788,14 @@ static int do_dump(int argc, char **argv)
dd.btf = btf;
dd.func_info = func_info;
dd.finfo_rec_size = finfo_rec_size;
+ dd.prog_linfo = prog_linfo;
if (json_output)
- dump_xlated_json(&dd, buf, *member_len, opcodes);
+ dump_xlated_json(&dd, buf, *member_len, opcodes,
+ linum);
else
- dump_xlated_plain(&dd, buf, *member_len, opcodes);
+ dump_xlated_plain(&dd, buf, *member_len, opcodes,
+ linum);
kernel_syms_destroy(&dd);
}
@@ -747,6 +803,9 @@ static int do_dump(int argc, char **argv)
free(func_ksyms);
free(func_lens);
free(func_info);
+ free(linfo);
+ free(jited_linfo);
+ bpf_prog_linfo__free(prog_linfo);
return 0;
err_free:
@@ -754,6 +813,9 @@ err_free:
free(func_ksyms);
free(func_lens);
free(func_info);
+ free(linfo);
+ free(jited_linfo);
+ bpf_prog_linfo__free(prog_linfo);
return -1;
}
@@ -1155,8 +1217,8 @@ static int do_help(int argc, char **argv)
fprintf(stderr,
"Usage: %s %s { show | list } [PROG]\n"
- " %s %s dump xlated PROG [{ file FILE | opcodes | visual }]\n"
- " %s %s dump jited PROG [{ file FILE | opcodes }]\n"
+ " %s %s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
+ " %s %s dump jited PROG [{ file FILE | opcodes | linum }]\n"
" %s %s pin PROG FILE\n"
" %s %s { load | loadall } OBJ PATH \\\n"
" [type TYPE] [dev NAME] \\\n"
@@ -1164,6 +1226,7 @@ static int do_help(int argc, char **argv)
" [pinmaps MAP_DIR]\n"
" %s %s attach PROG ATTACH_TYPE [MAP]\n"
" %s %s detach PROG ATTACH_TYPE [MAP]\n"
+ " %s %s tracelog\n"
" %s %s help\n"
"\n"
" " HELP_SPEC_MAP "\n"
@@ -1172,6 +1235,7 @@ static int do_help(int argc, char **argv)
" tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
" cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
" lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
+ " sk_reuseport | flow_dissector |\n"
" cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
" cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
" cgroup/sendmsg4 | cgroup/sendmsg6 }\n"
@@ -1181,7 +1245,7 @@ static int do_help(int argc, char **argv)
"",
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
- bin_name, argv[-2], bin_name, argv[-2]);
+ bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2]);
return 0;
}
@@ -1196,6 +1260,7 @@ static const struct cmd cmds[] = {
{ "loadall", do_loadall },
{ "attach", do_attach },
{ "detach", do_detach },
+ { "tracelog", do_tracelog },
{ 0 }
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.