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Diffstat (limited to 'tools/bpf/bpftool/prog.c')
-rw-r--r--tools/bpf/bpftool/prog.c197
1 files changed, 44 insertions, 153 deletions
diff --git a/tools/bpf/bpftool/prog.c b/tools/bpf/bpftool/prog.c
index a5eff83496f2..158995d853b0 100644
--- a/tools/bpf/bpftool/prog.c
+++ b/tools/bpf/bpftool/prog.c
@@ -29,6 +29,42 @@
#include "main.h"
#include "xlated_dumper.h"
+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_LWT_SEG6LOCAL] = "lwt_seg6local",
+ [BPF_PROG_TYPE_LIRC_MODE2] = "lirc_mode2",
+ [BPF_PROG_TYPE_SK_REUSEPORT] = "sk_reuseport",
+ [BPF_PROG_TYPE_FLOW_DISSECTOR] = "flow_dissector",
+ [BPF_PROG_TYPE_CGROUP_SYSCTL] = "cgroup_sysctl",
+ [BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE] = "raw_tracepoint_writable",
+ [BPF_PROG_TYPE_CGROUP_SOCKOPT] = "cgroup_sockopt",
+ [BPF_PROG_TYPE_TRACING] = "tracing",
+ [BPF_PROG_TYPE_STRUCT_OPS] = "struct_ops",
+ [BPF_PROG_TYPE_EXT] = "ext",
+ [BPF_PROG_TYPE_LSM] = "lsm",
+ [BPF_PROG_TYPE_SK_LOOKUP] = "sk_lookup",
+};
+
+const size_t prog_type_name_size = ARRAY_SIZE(prog_type_name);
+
enum dump_mode {
DUMP_JITED,
DUMP_XLATED,
@@ -86,158 +122,6 @@ static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
strftime(buf, size, "%FT%T%z", &load_tm);
}
-static int prog_fd_by_nametag(void *nametag, int **fds, bool tag)
-{
- unsigned int id = 0;
- int fd, nb_fds = 0;
- void *tmp;
- int err;
-
- while (true) {
- struct bpf_prog_info info = {};
- __u32 len = sizeof(info);
-
- err = bpf_prog_get_next_id(id, &id);
- if (err) {
- if (errno != ENOENT) {
- p_err("%s", strerror(errno));
- goto err_close_fds;
- }
- return nb_fds;
- }
-
- fd = bpf_prog_get_fd_by_id(id);
- if (fd < 0) {
- p_err("can't get prog by id (%u): %s",
- id, strerror(errno));
- goto err_close_fds;
- }
-
- err = bpf_obj_get_info_by_fd(fd, &info, &len);
- if (err) {
- p_err("can't get prog info (%u): %s",
- id, strerror(errno));
- goto err_close_fd;
- }
-
- if ((tag && memcmp(nametag, info.tag, BPF_TAG_SIZE)) ||
- (!tag && strncmp(nametag, info.name, BPF_OBJ_NAME_LEN))) {
- close(fd);
- continue;
- }
-
- if (nb_fds > 0) {
- tmp = realloc(*fds, (nb_fds + 1) * sizeof(int));
- if (!tmp) {
- p_err("failed to realloc");
- goto err_close_fd;
- }
- *fds = tmp;
- }
- (*fds)[nb_fds++] = fd;
- }
-
-err_close_fd:
- close(fd);
-err_close_fds:
- while (--nb_fds >= 0)
- close((*fds)[nb_fds]);
- return -1;
-}
-
-static int prog_parse_fds(int *argc, char ***argv, int **fds)
-{
- if (is_prefix(**argv, "id")) {
- unsigned int id;
- char *endptr;
-
- NEXT_ARGP();
-
- id = strtoul(**argv, &endptr, 0);
- if (*endptr) {
- p_err("can't parse %s as ID", **argv);
- return -1;
- }
- NEXT_ARGP();
-
- (*fds)[0] = bpf_prog_get_fd_by_id(id);
- if ((*fds)[0] < 0) {
- p_err("get by id (%u): %s", id, strerror(errno));
- return -1;
- }
- return 1;
- } else if (is_prefix(**argv, "tag")) {
- unsigned char tag[BPF_TAG_SIZE];
-
- NEXT_ARGP();
-
- if (sscanf(**argv, BPF_TAG_FMT, tag, tag + 1, tag + 2,
- tag + 3, tag + 4, tag + 5, tag + 6, tag + 7)
- != BPF_TAG_SIZE) {
- p_err("can't parse tag");
- return -1;
- }
- NEXT_ARGP();
-
- return prog_fd_by_nametag(tag, fds, true);
- } else if (is_prefix(**argv, "name")) {
- char *name;
-
- NEXT_ARGP();
-
- name = **argv;
- if (strlen(name) > BPF_OBJ_NAME_LEN - 1) {
- p_err("can't parse name");
- return -1;
- }
- NEXT_ARGP();
-
- return prog_fd_by_nametag(name, fds, false);
- } else if (is_prefix(**argv, "pinned")) {
- char *path;
-
- NEXT_ARGP();
-
- path = **argv;
- NEXT_ARGP();
-
- (*fds)[0] = open_obj_pinned_any(path, BPF_OBJ_PROG);
- if ((*fds)[0] < 0)
- return -1;
- return 1;
- }
-
- p_err("expected 'id', 'tag', 'name' or 'pinned', got: '%s'?", **argv);
- return -1;
-}
-
-int prog_parse_fd(int *argc, char ***argv)
-{
- int *fds = NULL;
- int nb_fds, fd;
-
- fds = malloc(sizeof(int));
- if (!fds) {
- p_err("mem alloc failed");
- return -1;
- }
- nb_fds = prog_parse_fds(argc, argv, &fds);
- if (nb_fds != 1) {
- if (nb_fds > 1) {
- p_err("several programs match this handle");
- while (nb_fds--)
- close(fds[nb_fds]);
- }
- fd = -1;
- goto exit_free;
- }
-
- fd = fds[0];
-exit_free:
- free(fds);
- return fd;
-}
-
static void show_prog_maps(int fd, __u32 num_maps)
{
struct bpf_prog_info info = {};
@@ -342,6 +226,8 @@ static void print_prog_json(struct bpf_prog_info *info, int fd)
jsonw_end_array(json_wtr);
}
+ emit_obj_refs_json(&refs_table, info->id, json_wtr);
+
jsonw_end_object(json_wtr);
}
@@ -408,6 +294,8 @@ static void print_prog_plain(struct bpf_prog_info *info, int fd)
if (info->btf_id)
printf("\n\tbtf_id %d", info->btf_id);
+ emit_obj_refs_plain(&refs_table, info->id, "\n\tpids ");
+
printf("\n");
}
@@ -473,6 +361,7 @@ static int do_show(int argc, char **argv)
if (show_pinned)
build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
+ build_obj_refs_table(&refs_table, BPF_OBJ_PROG);
if (argc == 2)
return do_show_subset(argc, argv);
@@ -514,6 +403,8 @@ static int do_show(int argc, char **argv)
if (json_output)
jsonw_end_array(json_wtr);
+ delete_obj_refs_table(&refs_table);
+
return err;
}
@@ -2016,7 +1907,7 @@ static int do_help(int argc, char **argv)
" cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n"
" cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n"
" cgroup/getsockopt | cgroup/setsockopt |\n"
- " struct_ops | fentry | fexit | freplace }\n"
+ " struct_ops | fentry | fexit | freplace | sk_lookup }\n"
" ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
" flow_dissector }\n"
" METRIC := { cycles | instructions | l1d_loads | llc_misses }\n"
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.