Пример #1
0
static void dump_kern_db(FILE *fp)
{
	json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;
	struct ifstat_ent *n;

	if (jw) {
		jsonw_start_object(jw);
		jsonw_pretty(jw, pretty);
		jsonw_name(jw, info_source);
		jsonw_start_object(jw);
	} else
		print_head(fp);

	for (n = kern_db; n; n = n->next) {
		if (!match(n->name))
			continue;

		if (jw)
			print_one_json(jw, n, n->val);
		else
			print_one_if(fp, n, n->val);
	}
	if (json_output)
		fprintf(fp, "\n} }\n");
}
Пример #2
0
static void dump_raw_db(FILE *fp, int to_hist)
{
	json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;
	struct ifstat_ent *n, *h;

	h = hist_db;
	if (jw) {
		jsonw_start_object(jw);
		jsonw_pretty(jw, pretty);
		jsonw_name(jw, info_source);
		jsonw_start_object(jw);
	} else
		fprintf(fp, "#%s\n", info_source);

	for (n = kern_db; n; n = n->next) {
		int i;
		unsigned long long *vals = n->val;
		double *rates = n->rate;

		if (!match(n->name)) {
			struct ifstat_ent *h1;

			if (!to_hist)
				continue;
			for (h1 = h; h1; h1 = h1->next) {
				if (h1->ifindex == n->ifindex) {
					vals = h1->val;
					rates = h1->rate;
					h = h1->next;
					break;
				}
			}
		}

		if (jw) {
			jsonw_name(jw, n->name);
			jsonw_start_object(jw);

			for (i = 0; i < MAXS && stats[i]; i++)
				jsonw_uint_field(jw, stats[i], vals[i]);
			jsonw_end_object(jw);
		} else {
			fprintf(fp, "%d %s ", n->ifindex, n->name);
			for (i = 0; i < MAXS; i++)
				fprintf(fp, "%llu %u ", vals[i],
					(unsigned int)rates[i]);
			fprintf(fp, "\n");
		}
	}
	if (jw) {
		jsonw_end_object(jw);

		jsonw_end_object(jw);
		jsonw_destroy(&jw);
	}
}
Пример #3
0
static enum bpf_perf_event_ret print_bpf_output(void *event, void *priv)
{
	struct event_ring_info *ring = priv;
	struct perf_event_sample *e = event;
	struct {
		struct perf_event_header header;
		__u64 id;
		__u64 lost;
	} *lost = event;

	if (json_output) {
		jsonw_start_object(json_wtr);
		jsonw_name(json_wtr, "type");
		jsonw_uint(json_wtr, e->header.type);
		jsonw_name(json_wtr, "cpu");
		jsonw_uint(json_wtr, ring->cpu);
		jsonw_name(json_wtr, "index");
		jsonw_uint(json_wtr, ring->key);
		if (e->header.type == PERF_RECORD_SAMPLE) {
			jsonw_name(json_wtr, "timestamp");
			jsonw_uint(json_wtr, e->time);
			jsonw_name(json_wtr, "data");
			print_data_json(e->data, e->size);
		} else if (e->header.type == PERF_RECORD_LOST) {
			jsonw_name(json_wtr, "lost");
			jsonw_start_object(json_wtr);
			jsonw_name(json_wtr, "id");
			jsonw_uint(json_wtr, lost->id);
			jsonw_name(json_wtr, "count");
			jsonw_uint(json_wtr, lost->lost);
			jsonw_end_object(json_wtr);
		}
		jsonw_end_object(json_wtr);
	} else {
		if (e->header.type == PERF_RECORD_SAMPLE) {
			printf("== @%lld.%09lld CPU: %d index: %d =====\n",
			       e->time / 1000000000ULL, e->time % 1000000000ULL,
			       ring->cpu, ring->key);
			fprint_hex(stdout, e->data, e->size, " ");
			printf("\n");
		} else if (e->header.type == PERF_RECORD_LOST) {
			printf("lost %lld events\n", lost->lost);
		} else {
			printf("unknown event type=%d size=%d\n",
			       e->header.type, e->header.size);
		}
	}

	return LIBBPF_PERF_EVENT_CONT;
}
Пример #4
0
Файл: btf.c Проект: avagin/linux
static int dump_btf_raw(const struct btf *btf,
			__u32 *root_type_ids, int root_type_cnt)
{
	const struct btf_type *t;
	int i;

	if (json_output) {
		jsonw_start_object(json_wtr);
		jsonw_name(json_wtr, "types");
		jsonw_start_array(json_wtr);
	}

	if (root_type_cnt) {
		for (i = 0; i < root_type_cnt; i++) {
			t = btf__type_by_id(btf, root_type_ids[i]);
			dump_btf_type(btf, root_type_ids[i], t);
		}
	} else {
		int cnt = btf__get_nr_types(btf);

		for (i = 1; i <= cnt; i++) {
			t = btf__type_by_id(btf, i);
			dump_btf_type(btf, i, t);
		}
	}

	if (json_output) {
		jsonw_end_array(json_wtr);
		jsonw_end_object(json_wtr);
	}
	return 0;
}
Пример #5
0
static int _res_send_msg(struct rd *rd, uint32_t command, mnl_cb_t callback)
{
	uint32_t flags = NLM_F_REQUEST | NLM_F_ACK;
	uint32_t seq;
	int ret;

	if (command != RDMA_NLDEV_CMD_RES_GET)
		flags |= NLM_F_DUMP;

	rd_prepare_msg(rd, command, &seq, flags);
	mnl_attr_put_u32(rd->nlh, RDMA_NLDEV_ATTR_DEV_INDEX, rd->dev_idx);
	if (rd->port_idx)
		mnl_attr_put_u32(rd->nlh,
				 RDMA_NLDEV_ATTR_PORT_INDEX, rd->port_idx);

	ret = rd_send_msg(rd);
	if (ret)
		return ret;

	if (rd->json_output)
		jsonw_start_object(rd->jw);
	ret = rd_recv_msg(rd, callback, rd, seq);
	if (rd->json_output)
		jsonw_end_object(rd->jw);
	return ret;
}
Пример #6
0
Файл: map.c Проект: avagin/linux
static int do_dump_btf(const struct btf_dumper *d,
		       struct bpf_map_info *map_info, void *key,
		       void *value)
{
	int ret;

	/* start of key-value pair */
	jsonw_start_object(d->jw);

	if (map_info->btf_key_type_id) {
		jsonw_name(d->jw, "key");

		ret = btf_dumper_type(d, map_info->btf_key_type_id, key);
		if (ret)
			goto err_end_obj;
	}

	if (!map_is_per_cpu(map_info->type)) {
		jsonw_name(d->jw, "value");
		ret = btf_dumper_type(d, map_info->btf_value_type_id, value);
	} else {
		unsigned int i, n, step;

		jsonw_name(d->jw, "values");
		jsonw_start_array(d->jw);
		n = get_possible_cpus();
		step = round_up(map_info->value_size, 8);
		for (i = 0; i < n; i++) {
			jsonw_start_object(d->jw);
			jsonw_int_field(d->jw, "cpu", i);
			jsonw_name(d->jw, "value");
			ret = btf_dumper_type(d, map_info->btf_value_type_id,
					      value + i * step);
			jsonw_end_object(d->jw);
			if (ret)
				break;
		}
		jsonw_end_array(d->jw);
	}

err_end_obj:
	/* end of key-value pair */
	jsonw_end_object(d->jw);

	return ret;
}
Пример #7
0
void open_json_object(const char *str)
{
	if (_IS_JSON_CONTEXT(PRINT_JSON)) {
		if (str)
			jsonw_name(_jw, str);
		jsonw_start_object(_jw);
	}
}
Пример #8
0
static int vlan_show(int argc, char **argv)
{
	char *filter_dev = NULL;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			if (filter_dev)
				duparg("dev", *argv);
			filter_dev = *argv;
		} else if (strcmp(*argv, "vid") == 0) {
			NEXT_ARG();
			if (filter_vlan)
				duparg("vid", *argv);
			filter_vlan = atoi(*argv);
		}
		argc--; argv++;
	}

	if (filter_dev) {
		if ((filter_index = if_nametoindex(filter_dev)) == 0) {
			fprintf(stderr, "Cannot find device \"%s\"\n",
			       filter_dev);
			return -1;
		}
	}

	if (rtnl_wilddump_req_filter(&rth, PF_BRIDGE, RTM_GETLINK,
				    (compress_vlans ?
				    RTEXT_FILTER_BRVLAN_COMPRESSED :
				    RTEXT_FILTER_BRVLAN)) < 0) {
		perror("Cannont send dump request");
		exit(1);
	}

	if (json_output) {
		jw_global = jsonw_new(stdout);
		if (!jw_global) {
			fprintf(stderr, "Error allocation json object\n");
			exit(1);
		}
		jsonw_start_object(jw_global);
	} else {
		printf("port\tvlan ids\n");
	}

	if (rtnl_dump_filter(&rth, print_vlan, stdout) < 0) {
		fprintf(stderr, "Dump ternminated\n");
		exit(1);
	}

	if (jw_global) {
		jsonw_end_object(jw_global);
		jsonw_destroy(&jw_global);
	}

	return 0;
}
Пример #9
0
static void dump_incr_db(FILE *fp)
{
	struct ifstat_ent *n, *h;
	json_writer_t *jw = json_output ? jsonw_new(fp) : NULL;

	h = hist_db;
	if (jw) {
		jsonw_start_object(jw);
		jsonw_pretty(jw, pretty);
		jsonw_name(jw, info_source);
		jsonw_start_object(jw);
	} else
		print_head(fp);

	for (n = kern_db; n; n = n->next) {
		int i;
		unsigned long long vals[MAXS];
		struct ifstat_ent *h1;

		memcpy(vals, n->val, sizeof(vals));

		for (h1 = h; h1; h1 = h1->next) {
			if (h1->ifindex == n->ifindex) {
				for (i = 0; i < MAXS; i++)
					vals[i] -= h1->val[i];
				h = h1->next;
				break;
			}
		}
		if (!match(n->name))
			continue;

		if (jw)
			print_one_json(jw, n, n->val);
		else
			print_one_if(fp, n, vals);
	}

	if (jw) {
		jsonw_end_object(jw);

		jsonw_end_object(jw);
		jsonw_destroy(&jw);
	}
}
Пример #10
0
int main(int argc, char **argv)
{
	json_writer_t *wr = jsonw_new(stdout);

	jsonw_start_object(wr);
	jsonw_pretty(wr, true);
	jsonw_name(wr, "Vyatta");
	jsonw_start_object(wr);
	jsonw_string_field(wr, "url", "http://vyatta.com");
	jsonw_uint_field(wr, "downloads", 2000000ul);
	jsonw_float_field(wr, "stock", 8.16);

	jsonw_name(wr, "ARGV");
	jsonw_start_array(wr);
	while (--argc)
		jsonw_string(wr, *++argv);
	jsonw_end_array(wr);

	jsonw_name(wr, "empty");
	jsonw_start_array(wr);
	jsonw_end_array(wr);

	jsonw_name(wr, "NIL");
	jsonw_start_object(wr);
	jsonw_end_object(wr);

	jsonw_null_field(wr, "my_null");

	jsonw_name(wr, "special chars");
	jsonw_start_array(wr);
	jsonw_string_field(wr, "slash", "/");
	jsonw_string_field(wr, "newline", "\n");
	jsonw_string_field(wr, "tab", "\t");
	jsonw_string_field(wr, "ff", "\f");
	jsonw_string_field(wr, "quote", "\"");
	jsonw_string_field(wr, "tick", "\'");
	jsonw_string_field(wr, "backslash", "\\");
	jsonw_end_array(wr);

	jsonw_end_object(wr);

	jsonw_end_object(wr);
	jsonw_destroy(&wr);
	return 0;
}
Пример #11
0
static int do_version(int argc, char **argv)
{
	if (json_output) {
		jsonw_start_object(json_wtr);
		jsonw_name(json_wtr, "version");
		jsonw_printf(json_wtr, "\"%s\"", BPFTOOL_VERSION);
		jsonw_end_object(json_wtr);
	} else {
		printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
	}
	return 0;
}
Пример #12
0
static void print_one_json(json_writer_t *jw, const struct ifstat_ent *n,
			   const unsigned long long *vals)
{
	int i, m = show_errors ? 20 : 10;

	jsonw_name(jw, n->name);
	jsonw_start_object(jw);

	for (i = 0; i < m && stats[i]; i++)
		jsonw_uint_field(jw, stats[i], vals[i]);

	jsonw_end_object(jw);
}
Пример #13
0
Файл: map.c Проект: avagin/linux
static void print_entry_json(struct bpf_map_info *info, unsigned char *key,
			     unsigned char *value, struct btf *btf)
{
	jsonw_start_object(json_wtr);

	if (!map_is_per_cpu(info->type)) {
		jsonw_name(json_wtr, "key");
		print_hex_data_json(key, info->key_size);
		jsonw_name(json_wtr, "value");
		print_hex_data_json(value, info->value_size);
		if (btf) {
			struct btf_dumper d = {
				.btf = btf,
				.jw = json_wtr,
				.is_plain_text = false,
			};

			jsonw_name(json_wtr, "formatted");
			do_dump_btf(&d, info, key, value);
		}
	} else {
Пример #14
0
static int show_bpf_prog(int id, const char *attach_type_str,
			 const char *attach_flags_str,
			 int level)
{
	struct bpf_prog_info info = {};
	__u32 info_len = sizeof(info);
	int prog_fd;

	prog_fd = bpf_prog_get_fd_by_id(id);
	if (prog_fd < 0)
		return -1;

	if (bpf_obj_get_info_by_fd(prog_fd, &info, &info_len)) {
		close(prog_fd);
		return -1;
	}

	if (json_output) {
		jsonw_start_object(json_wtr);
		jsonw_uint_field(json_wtr, "id", info.id);
		jsonw_string_field(json_wtr, "attach_type",
				   attach_type_str);
		jsonw_string_field(json_wtr, "attach_flags",
				   attach_flags_str);
		jsonw_string_field(json_wtr, "name", info.name);
		jsonw_end_object(json_wtr);
	} else {
		printf("%s%-8u %-15s %-15s %-15s\n", level ? "    " : "",
		       info.id,
		       attach_type_str,
		       attach_flags_str,
		       info.name);
	}

	close(prog_fd);
	return 0;
}
Пример #15
0
static int vlan_modify(int cmd, int argc, char **argv)
{
	struct {
		struct nlmsghdr	n;
		struct ifinfomsg	ifm;
		char			buf[1024];
	} req = {
		.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
		.n.nlmsg_flags = NLM_F_REQUEST,
		.n.nlmsg_type = cmd,
		.ifm.ifi_family = PF_BRIDGE,
	};
	char *d = NULL;
	short vid = -1;
	short vid_end = -1;
	struct rtattr *afspec;
	struct bridge_vlan_info vinfo = {};
	unsigned short flags = 0;

	while (argc > 0) {
		if (strcmp(*argv, "dev") == 0) {
			NEXT_ARG();
			d = *argv;
		} else if (strcmp(*argv, "vid") == 0) {
			char *p;

			NEXT_ARG();
			p = strchr(*argv, '-');
			if (p) {
				*p = '\0';
				p++;
				vid = atoi(*argv);
				vid_end = atoi(p);
				vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_BEGIN;
			} else {
				vid = atoi(*argv);
			}
		} else if (strcmp(*argv, "self") == 0) {
			flags |= BRIDGE_FLAGS_SELF;
		} else if (strcmp(*argv, "master") == 0) {
			flags |= BRIDGE_FLAGS_MASTER;
		} else if (strcmp(*argv, "pvid") == 0) {
			vinfo.flags |= BRIDGE_VLAN_INFO_PVID;
		} else if (strcmp(*argv, "untagged") == 0) {
			vinfo.flags |= BRIDGE_VLAN_INFO_UNTAGGED;
		} else {
			if (matches(*argv, "help") == 0) {
				NEXT_ARG();
			}
		}
		argc--; argv++;
	}

	if (d == NULL || vid == -1) {
		fprintf(stderr, "Device and VLAN ID are required arguments.\n");
		return -1;
	}

	req.ifm.ifi_index = ll_name_to_index(d);
	if (req.ifm.ifi_index == 0) {
		fprintf(stderr, "Cannot find bridge device \"%s\"\n", d);
		return -1;
	}

	if (vid >= 4096) {
		fprintf(stderr, "Invalid VLAN ID \"%hu\"\n", vid);
		return -1;
	}

	if (vinfo.flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
		if (vid_end == -1 || vid_end >= 4096 || vid >= vid_end) {
			fprintf(stderr, "Invalid VLAN range \"%hu-%hu\"\n",
				vid, vid_end);
			return -1;
		}
		if (vinfo.flags & BRIDGE_VLAN_INFO_PVID) {
			fprintf(stderr,
				"pvid cannot be configured for a vlan range\n");
			return -1;
		}
	}

	afspec = addattr_nest(&req.n, sizeof(req), IFLA_AF_SPEC);

	if (flags)
		addattr16(&req.n, sizeof(req), IFLA_BRIDGE_FLAGS, flags);

	vinfo.vid = vid;
	if (vid_end != -1) {
		/* send vlan range start */
		addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo,
			  sizeof(vinfo));
		vinfo.flags &= ~BRIDGE_VLAN_INFO_RANGE_BEGIN;

		/* Now send the vlan range end */
		vinfo.flags |= BRIDGE_VLAN_INFO_RANGE_END;
		vinfo.vid = vid_end;
		addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo,
			  sizeof(vinfo));
	} else {
		addattr_l(&req.n, sizeof(req), IFLA_BRIDGE_VLAN_INFO, &vinfo,
			  sizeof(vinfo));
	}

	addattr_nest_end(&req.n, afspec);

	if (rtnl_talk(&rth, &req.n, NULL, 0) < 0)
		return -1;

	return 0;
}

/* In order to use this function for both filtering and non-filtering cases
 * we need to make it a tristate:
 * return -1 - if filtering we've gone over so don't continue
 * return  0 - skip entry and continue (applies to range start or to entries
 *             which are less than filter_vlan)
 * return  1 - print the entry and continue
 */
static int filter_vlan_check(struct bridge_vlan_info *vinfo)
{
	/* if we're filtering we should stop on the first greater entry */
	if (filter_vlan && vinfo->vid > filter_vlan &&
	    !(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
		return -1;
	if ((vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) ||
	    vinfo->vid < filter_vlan)
		return 0;

	return 1;
}

static void print_vlan_port(FILE *fp, int ifi_index)
{
	if (jw_global) {
		jsonw_pretty(jw_global, 1);
		jsonw_name(jw_global,
			   ll_index_to_name(ifi_index));
		jsonw_start_array(jw_global);
	} else {
		fprintf(fp, "%s",
			ll_index_to_name(ifi_index));
	}
}

static void start_json_vlan_flags_array(bool *vlan_flags)
{
	if (*vlan_flags)
		return;
	jsonw_name(jw_global, "flags");
	jsonw_start_array(jw_global);
	*vlan_flags = true;
}

static int print_vlan(const struct sockaddr_nl *who,
		      struct nlmsghdr *n,
		      void *arg)
{
	FILE *fp = arg;
	struct ifinfomsg *ifm = NLMSG_DATA(n);
	int len = n->nlmsg_len;
	struct rtattr *tb[IFLA_MAX+1];
	bool vlan_flags;

	if (n->nlmsg_type != RTM_NEWLINK) {
		fprintf(stderr, "Not RTM_NEWLINK: %08x %08x %08x\n",
			n->nlmsg_len, n->nlmsg_type, n->nlmsg_flags);
		return 0;
	}

	len -= NLMSG_LENGTH(sizeof(*ifm));
	if (len < 0) {
		fprintf(stderr, "BUG: wrong nlmsg len %d\n", len);
		return -1;
	}

	if (ifm->ifi_family != AF_BRIDGE)
		return 0;

	if (filter_index && filter_index != ifm->ifi_index)
		return 0;

	parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifm), len);

	/* if AF_SPEC isn't there, vlan table is not preset for this port */
	if (!tb[IFLA_AF_SPEC]) {
		if (!filter_vlan)
			fprintf(fp, "%s\tNone\n",
				ll_index_to_name(ifm->ifi_index));
		return 0;
	} else {
		struct rtattr *i, *list = tb[IFLA_AF_SPEC];
		int rem = RTA_PAYLOAD(list);
		__u16 last_vid_start = 0;

		if (!filter_vlan)
			print_vlan_port(fp, ifm->ifi_index);

		for (i = RTA_DATA(list); RTA_OK(i, rem); i = RTA_NEXT(i, rem)) {
			struct bridge_vlan_info *vinfo;
			int vcheck_ret;

			if (i->rta_type != IFLA_BRIDGE_VLAN_INFO)
				continue;

			vinfo = RTA_DATA(i);

			if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END))
				last_vid_start = vinfo->vid;
			vcheck_ret = filter_vlan_check(vinfo);
			if (vcheck_ret == -1)
				break;
			else if (vcheck_ret == 0)
				continue;

			if (filter_vlan)
				print_vlan_port(fp, ifm->ifi_index);
			if (jw_global) {
				jsonw_start_object(jw_global);
				jsonw_uint_field(jw_global, "vlan",
						 last_vid_start);
				if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN)
					continue;
			} else {
				fprintf(fp, "\t %hu", last_vid_start);
			}
			if (last_vid_start != vinfo->vid) {
				if (jw_global)
					jsonw_uint_field(jw_global, "vlanEnd",
							 vinfo->vid);
				else
					fprintf(fp, "-%hu", vinfo->vid);
			}
			if (vinfo->flags & BRIDGE_VLAN_INFO_PVID) {
				if (jw_global) {
					start_json_vlan_flags_array(&vlan_flags);
					jsonw_string(jw_global, "PVID");
				} else {
					fprintf(fp, " PVID");
				}
			}
			if (vinfo->flags & BRIDGE_VLAN_INFO_UNTAGGED) {
				if (jw_global) {
					start_json_vlan_flags_array(&vlan_flags);
					jsonw_string(jw_global,
						     "Egress Untagged");
				} else {
					fprintf(fp, " Egress Untagged");
				}
			}
			if (vlan_flags) {
				jsonw_end_array(jw_global);
				vlan_flags = false;
			}

			if (jw_global)
				jsonw_end_object(jw_global);
			else
				fprintf(fp, "\n");
		}
	}
	if (!filter_vlan) {
		if (jw_global)
			jsonw_end_array(jw_global);
		else
			fprintf(fp, "\n");

	}
	fflush(fp);
	return 0;
}
Пример #16
0
static int do_show_tree_fn(const char *fpath, const struct stat *sb,
			   int typeflag, struct FTW *ftw)
{
	enum bpf_attach_type type;
	bool skip = true;
	int cgroup_fd;

	if (typeflag != FTW_D)
		return 0;

	cgroup_fd = open(fpath, O_RDONLY);
	if (cgroup_fd < 0) {
		p_err("can't open cgroup %s: %s", fpath, strerror(errno));
		return SHOW_TREE_FN_ERR;
	}

	for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) {
		int count = count_attached_bpf_progs(cgroup_fd, type);

		if (count < 0 && errno != EINVAL) {
			p_err("can't query bpf programs attached to %s: %s",
			      fpath, strerror(errno));
			close(cgroup_fd);
			return SHOW_TREE_FN_ERR;
		}
		if (count > 0) {
			skip = false;
			break;
		}
	}

	if (skip) {
		close(cgroup_fd);
		return 0;
	}

	if (json_output) {
		jsonw_start_object(json_wtr);
		jsonw_string_field(json_wtr, "cgroup", fpath);
		jsonw_name(json_wtr, "programs");
		jsonw_start_array(json_wtr);
	} else {
		printf("%s\n", fpath);
	}

	for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++)
		show_attached_bpf_progs(cgroup_fd, type, ftw->level);

	if (errno == EINVAL)
		/* Last attach type does not support query.
		 * Do not report an error for this, especially because batch
		 * mode would stop processing commands.
		 */
		errno = 0;

	if (json_output) {
		jsonw_end_array(json_wtr);
		jsonw_end_object(json_wtr);
	}

	close(cgroup_fd);

	return 0;
}
Пример #17
0
static int do_batch(int argc, char **argv)
{
	char buf[BATCH_LINE_LEN_MAX], contline[BATCH_LINE_LEN_MAX];
	char *n_argv[BATCH_ARG_NB_MAX];
	unsigned int lines = 0;
	int n_argc;
	FILE *fp;
	char *cp;
	int err;
	int i;

	if (argc < 2) {
		p_err("too few parameters for batch");
		return -1;
	} else if (!is_prefix(*argv, "file")) {
		p_err("expected 'file', got: %s", *argv);
		return -1;
	} else if (argc > 2) {
		p_err("too many parameters for batch");
		return -1;
	}
	NEXT_ARG();

	if (!strcmp(*argv, "-"))
		fp = stdin;
	else
		fp = fopen(*argv, "r");
	if (!fp) {
		p_err("Can't open file (%s): %s", *argv, strerror(errno));
		return -1;
	}

	if (json_output)
		jsonw_start_array(json_wtr);
	while (fgets(buf, sizeof(buf), fp)) {
		cp = strchr(buf, '#');
		if (cp)
			*cp = '\0';

		if (strlen(buf) == sizeof(buf) - 1) {
			errno = E2BIG;
			break;
		}

		/* Append continuation lines if any (coming after a line ending
		 * with '\' in the batch file).
		 */
		while ((cp = strstr(buf, "\\\n")) != NULL) {
			if (!fgets(contline, sizeof(contline), fp) ||
			    strlen(contline) == 0) {
				p_err("missing continuation line on command %d",
				      lines);
				err = -1;
				goto err_close;
			}

			cp = strchr(contline, '#');
			if (cp)
				*cp = '\0';

			if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
				p_err("command %d is too long", lines);
				err = -1;
				goto err_close;
			}
			buf[strlen(buf) - 2] = '\0';
			strcat(buf, contline);
		}

		n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
		if (!n_argc)
			continue;
		if (n_argc < 0)
			goto err_close;

		if (json_output) {
			jsonw_start_object(json_wtr);
			jsonw_name(json_wtr, "command");
			jsonw_start_array(json_wtr);
			for (i = 0; i < n_argc; i++)
				jsonw_string(json_wtr, n_argv[i]);
			jsonw_end_array(json_wtr);
			jsonw_name(json_wtr, "output");
		}

		err = cmd_select(cmds, n_argc, n_argv, do_help);

		if (json_output)
			jsonw_end_object(json_wtr);

		if (err)
			goto err_close;

		lines++;
	}

	if (errno && errno != ENOENT) {
		p_err("reading batch file failed: %s", strerror(errno));
		err = -1;
	} else {
		if (!json_output)
			printf("processed %d commands\n", lines);
		err = 0;
	}
err_close:
	if (fp != stdin)
		fclose(fp);

	if (json_output)
		jsonw_end_array(json_wtr);

	return err;
}
Пример #18
0
void dump_xlated_json(struct dump_data *dd, void *buf, unsigned int len,
		      bool opcodes, bool linum)
{
	const struct bpf_prog_linfo *prog_linfo = dd->prog_linfo;
	const struct bpf_insn_cbs cbs = {
		.cb_print	= print_insn_json,
		.cb_call	= print_call,
		.cb_imm		= print_imm,
		.private_data	= dd,
	};
	struct bpf_func_info *record;
	struct bpf_insn *insn = buf;
	struct btf *btf = dd->btf;
	bool double_insn = false;
	unsigned int nr_skip = 0;
	char func_sig[1024];
	unsigned int i;

	jsonw_start_array(json_wtr);
	record = dd->func_info;
	for (i = 0; i < len / sizeof(*insn); i++) {
		if (double_insn) {
			double_insn = false;
			continue;
		}
		double_insn = insn[i].code == (BPF_LD | BPF_IMM | BPF_DW);

		jsonw_start_object(json_wtr);

		if (btf && record) {
			if (record->insn_off == i) {
				btf_dumper_type_only(btf, record->type_id,
						     func_sig,
						     sizeof(func_sig));
				if (func_sig[0] != '\0') {
					jsonw_name(json_wtr, "proto");
					jsonw_string(json_wtr, func_sig);
				}
				record = (void *)record + dd->finfo_rec_size;
			}
		}

		if (prog_linfo) {
			const struct bpf_line_info *linfo;

			linfo = bpf_prog_linfo__lfind(prog_linfo, i, nr_skip);
			if (linfo) {
				btf_dump_linfo_json(btf, linfo, linum);
				nr_skip++;
			}
		}

		jsonw_name(json_wtr, "disasm");
		print_bpf_insn(&cbs, insn + i, true);

		if (opcodes) {
			jsonw_name(json_wtr, "opcodes");
			jsonw_start_object(json_wtr);

			jsonw_name(json_wtr, "code");
			jsonw_printf(json_wtr, "\"0x%02hhx\"", insn[i].code);

			jsonw_name(json_wtr, "src_reg");
			jsonw_printf(json_wtr, "\"0x%hhx\"", insn[i].src_reg);

			jsonw_name(json_wtr, "dst_reg");
			jsonw_printf(json_wtr, "\"0x%hhx\"", insn[i].dst_reg);

			jsonw_name(json_wtr, "off");
			print_hex_data_json((uint8_t *)(&insn[i].off), 2);

			jsonw_name(json_wtr, "imm");
			if (double_insn && i < len - 1)
				print_hex_data_json((uint8_t *)(&insn[i].imm),
						    12);
			else
				print_hex_data_json((uint8_t *)(&insn[i].imm),
						    4);
			jsonw_end_object(json_wtr);
		}
		jsonw_end_object(json_wtr);
	}
	jsonw_end_array(json_wtr);
}
Пример #19
0
Файл: btf.c Проект: avagin/linux
static int dump_btf_type(const struct btf *btf, __u32 id,
			 const struct btf_type *t)
{
	json_writer_t *w = json_wtr;
	int kind, safe_kind;

	kind = BTF_INFO_KIND(t->info);
	safe_kind = kind <= BTF_KIND_MAX ? kind : BTF_KIND_UNKN;

	if (json_output) {
		jsonw_start_object(w);
		jsonw_uint_field(w, "id", id);
		jsonw_string_field(w, "kind", btf_kind_str[safe_kind]);
		jsonw_string_field(w, "name", btf_str(btf, t->name_off));
	} else {
		printf("[%u] %s '%s'", id, btf_kind_str[safe_kind],
		       btf_str(btf, t->name_off));
	}

	switch (BTF_INFO_KIND(t->info)) {
	case BTF_KIND_INT: {
		__u32 v = *(__u32 *)(t + 1);
		const char *enc;

		enc = btf_int_enc_str(BTF_INT_ENCODING(v));

		if (json_output) {
			jsonw_uint_field(w, "size", t->size);
			jsonw_uint_field(w, "bits_offset", BTF_INT_OFFSET(v));
			jsonw_uint_field(w, "nr_bits", BTF_INT_BITS(v));
			jsonw_string_field(w, "encoding", enc);
		} else {
			printf(" size=%u bits_offset=%u nr_bits=%u encoding=%s",
			       t->size, BTF_INT_OFFSET(v), BTF_INT_BITS(v),
			       enc);
		}
		break;
	}
	case BTF_KIND_PTR:
	case BTF_KIND_CONST:
	case BTF_KIND_VOLATILE:
	case BTF_KIND_RESTRICT:
	case BTF_KIND_TYPEDEF:
		if (json_output)
			jsonw_uint_field(w, "type_id", t->type);
		else
			printf(" type_id=%u", t->type);
		break;
	case BTF_KIND_ARRAY: {
		const struct btf_array *arr = (const void *)(t + 1);

		if (json_output) {
			jsonw_uint_field(w, "type_id", arr->type);
			jsonw_uint_field(w, "index_type_id", arr->index_type);
			jsonw_uint_field(w, "nr_elems", arr->nelems);
		} else {
			printf(" type_id=%u index_type_id=%u nr_elems=%u",
			       arr->type, arr->index_type, arr->nelems);
		}
		break;
	}
	case BTF_KIND_STRUCT:
	case BTF_KIND_UNION: {
		const struct btf_member *m = (const void *)(t + 1);
		__u16 vlen = BTF_INFO_VLEN(t->info);
		int i;

		if (json_output) {
			jsonw_uint_field(w, "size", t->size);
			jsonw_uint_field(w, "vlen", vlen);
			jsonw_name(w, "members");
			jsonw_start_array(w);
		} else {
			printf(" size=%u vlen=%u", t->size, vlen);
		}
		for (i = 0; i < vlen; i++, m++) {
			const char *name = btf_str(btf, m->name_off);
			__u32 bit_off, bit_sz;

			if (BTF_INFO_KFLAG(t->info)) {
				bit_off = BTF_MEMBER_BIT_OFFSET(m->offset);
				bit_sz = BTF_MEMBER_BITFIELD_SIZE(m->offset);
			} else {
				bit_off = m->offset;
				bit_sz = 0;
			}

			if (json_output) {
				jsonw_start_object(w);
				jsonw_string_field(w, "name", name);
				jsonw_uint_field(w, "type_id", m->type);
				jsonw_uint_field(w, "bits_offset", bit_off);
				if (bit_sz) {
					jsonw_uint_field(w, "bitfield_size",
							 bit_sz);
				}
				jsonw_end_object(w);
			} else {
				printf("\n\t'%s' type_id=%u bits_offset=%u",
				       name, m->type, bit_off);
				if (bit_sz)
					printf(" bitfield_size=%u", bit_sz);
			}
		}
		if (json_output)
			jsonw_end_array(w);
		break;
	}
	case BTF_KIND_ENUM: {
		const struct btf_enum *v = (const void *)(t + 1);
		__u16 vlen = BTF_INFO_VLEN(t->info);
		int i;

		if (json_output) {
			jsonw_uint_field(w, "size", t->size);
			jsonw_uint_field(w, "vlen", vlen);
			jsonw_name(w, "values");
			jsonw_start_array(w);
		} else {
			printf(" size=%u vlen=%u", t->size, vlen);
		}
		for (i = 0; i < vlen; i++, v++) {
			const char *name = btf_str(btf, v->name_off);

			if (json_output) {
				jsonw_start_object(w);
				jsonw_string_field(w, "name", name);
				jsonw_uint_field(w, "val", v->val);
				jsonw_end_object(w);
			} else {
				printf("\n\t'%s' val=%u", name, v->val);
			}
		}
		if (json_output)
			jsonw_end_array(w);
		break;
	}
	case BTF_KIND_FWD: {
		const char *fwd_kind = BTF_INFO_KFLAG(t->info) ? "union"
							       : "struct";

		if (json_output)
			jsonw_string_field(w, "fwd_kind", fwd_kind);
		else
			printf(" fwd_kind=%s", fwd_kind);
		break;
	}
	case BTF_KIND_FUNC:
		if (json_output)
			jsonw_uint_field(w, "type_id", t->type);
		else
			printf(" type_id=%u", t->type);
		break;
	case BTF_KIND_FUNC_PROTO: {
		const struct btf_param *p = (const void *)(t + 1);
		__u16 vlen = BTF_INFO_VLEN(t->info);
		int i;

		if (json_output) {
			jsonw_uint_field(w, "ret_type_id", t->type);
			jsonw_uint_field(w, "vlen", vlen);
			jsonw_name(w, "params");
			jsonw_start_array(w);
		} else {
			printf(" ret_type_id=%u vlen=%u", t->type, vlen);
		}
		for (i = 0; i < vlen; i++, p++) {
			const char *name = btf_str(btf, p->name_off);

			if (json_output) {
				jsonw_start_object(w);
				jsonw_string_field(w, "name", name);
				jsonw_uint_field(w, "type_id", p->type);
				jsonw_end_object(w);
			} else {
				printf("\n\t'%s' type_id=%u", name, p->type);
			}
		}
		if (json_output)
			jsonw_end_array(w);
		break;
	}
	case BTF_KIND_VAR: {
		const struct btf_var *v = (const void *)(t + 1);
		const char *linkage;

		linkage = btf_var_linkage_str(v->linkage);

		if (json_output) {
			jsonw_uint_field(w, "type_id", t->type);
			jsonw_string_field(w, "linkage", linkage);
		} else {
			printf(" type_id=%u, linkage=%s", t->type, linkage);
		}
		break;
	}
	case BTF_KIND_DATASEC: {
		const struct btf_var_secinfo *v = (const void *)(t+1);
		__u16 vlen = BTF_INFO_VLEN(t->info);
		int i;

		if (json_output) {
			jsonw_uint_field(w, "size", t->size);
			jsonw_uint_field(w, "vlen", vlen);
			jsonw_name(w, "vars");
			jsonw_start_array(w);
		} else {
			printf(" size=%u vlen=%u", t->size, vlen);
		}
		for (i = 0; i < vlen; i++, v++) {
			if (json_output) {
				jsonw_start_object(w);
				jsonw_uint_field(w, "type_id", v->type);
				jsonw_uint_field(w, "offset", v->offset);
				jsonw_uint_field(w, "size", v->size);
				jsonw_end_object(w);
			} else {
				printf("\n\ttype_id=%u offset=%u size=%u",
				       v->type, v->offset, v->size);
			}
		}
		if (json_output)
			jsonw_end_array(w);
		break;
	}
	default:
		break;
	}

	if (json_output)
		jsonw_end_object(json_wtr);
	else
		printf("\n");

	return 0;
}