Loading...
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4#include <ctype.h>
5#include <errno.h>
6#include <getopt.h>
7#include <linux/bpf.h>
8#include <stdio.h>
9#include <stdlib.h>
10#include <string.h>
11
12#include <bpf/bpf.h>
13#include <bpf/libbpf.h>
14#include <bpf/btf.h>
15
16#include "main.h"
17
18#define BATCH_LINE_LEN_MAX 65536
19#define BATCH_ARG_NB_MAX 4096
20
21const char *bin_name;
22static int last_argc;
23static char **last_argv;
24static int (*last_do_help)(int argc, char **argv);
25json_writer_t *json_wtr;
26bool pretty_output;
27bool json_output;
28bool show_pinned;
29bool block_mount;
30bool verifier_logs;
31bool relaxed_maps;
32bool use_loader;
33struct btf *base_btf;
34struct pinned_obj_table prog_table;
35struct pinned_obj_table map_table;
36struct pinned_obj_table link_table;
37struct obj_refs_table refs_table;
38
39static void __noreturn clean_and_exit(int i)
40{
41 if (json_output)
42 jsonw_destroy(&json_wtr);
43
44 exit(i);
45}
46
47void usage(void)
48{
49 last_do_help(last_argc - 1, last_argv + 1);
50
51 clean_and_exit(-1);
52}
53
54static int do_help(int argc, char **argv)
55{
56 if (json_output) {
57 jsonw_null(json_wtr);
58 return 0;
59 }
60
61 fprintf(stderr,
62 "Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
63 " %s batch file FILE\n"
64 " %s version\n"
65 "\n"
66 " OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }\n"
67 " " HELP_SPEC_OPTIONS "\n"
68 "",
69 bin_name, bin_name, bin_name);
70
71 return 0;
72}
73
74static int do_version(int argc, char **argv)
75{
76#ifdef HAVE_LIBBFD_SUPPORT
77 const bool has_libbfd = true;
78#else
79 const bool has_libbfd = false;
80#endif
81#ifdef BPFTOOL_WITHOUT_SKELETONS
82 const bool has_skeletons = false;
83#else
84 const bool has_skeletons = true;
85#endif
86
87 if (json_output) {
88 jsonw_start_object(json_wtr); /* root object */
89
90 jsonw_name(json_wtr, "version");
91 jsonw_printf(json_wtr, "\"%s\"", BPFTOOL_VERSION);
92
93 jsonw_name(json_wtr, "features");
94 jsonw_start_object(json_wtr); /* features */
95 jsonw_bool_field(json_wtr, "libbfd", has_libbfd);
96 jsonw_bool_field(json_wtr, "skeletons", has_skeletons);
97 jsonw_end_object(json_wtr); /* features */
98
99 jsonw_end_object(json_wtr); /* root object */
100 } else {
101 unsigned int nb_features = 0;
102
103 printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
104 printf("features:");
105 if (has_libbfd) {
106 printf(" libbfd");
107 nb_features++;
108 }
109 if (has_skeletons)
110 printf("%s skeletons", nb_features++ ? "," : "");
111 printf("\n");
112 }
113 return 0;
114}
115
116int cmd_select(const struct cmd *cmds, int argc, char **argv,
117 int (*help)(int argc, char **argv))
118{
119 unsigned int i;
120
121 last_argc = argc;
122 last_argv = argv;
123 last_do_help = help;
124
125 if (argc < 1 && cmds[0].func)
126 return cmds[0].func(argc, argv);
127
128 for (i = 0; cmds[i].cmd; i++) {
129 if (is_prefix(*argv, cmds[i].cmd)) {
130 if (!cmds[i].func) {
131 p_err("command '%s' is not supported in bootstrap mode",
132 cmds[i].cmd);
133 return -1;
134 }
135 return cmds[i].func(argc - 1, argv + 1);
136 }
137 }
138
139 help(argc - 1, argv + 1);
140
141 return -1;
142}
143
144bool is_prefix(const char *pfx, const char *str)
145{
146 if (!pfx)
147 return false;
148 if (strlen(str) < strlen(pfx))
149 return false;
150
151 return !memcmp(str, pfx, strlen(pfx));
152}
153
154/* Last argument MUST be NULL pointer */
155int detect_common_prefix(const char *arg, ...)
156{
157 unsigned int count = 0;
158 const char *ref;
159 char msg[256];
160 va_list ap;
161
162 snprintf(msg, sizeof(msg), "ambiguous prefix: '%s' could be '", arg);
163 va_start(ap, arg);
164 while ((ref = va_arg(ap, const char *))) {
165 if (!is_prefix(arg, ref))
166 continue;
167 count++;
168 if (count > 1)
169 strncat(msg, "' or '", sizeof(msg) - strlen(msg) - 1);
170 strncat(msg, ref, sizeof(msg) - strlen(msg) - 1);
171 }
172 va_end(ap);
173 strncat(msg, "'", sizeof(msg) - strlen(msg) - 1);
174
175 if (count >= 2) {
176 p_err("%s", msg);
177 return -1;
178 }
179
180 return 0;
181}
182
183void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep)
184{
185 unsigned char *data = arg;
186 unsigned int i;
187
188 for (i = 0; i < n; i++) {
189 const char *pfx = "";
190
191 if (!i)
192 /* nothing */;
193 else if (!(i % 16))
194 fprintf(f, "\n");
195 else if (!(i % 8))
196 fprintf(f, " ");
197 else
198 pfx = sep;
199
200 fprintf(f, "%s%02hhx", i ? pfx : "", data[i]);
201 }
202}
203
204/* Split command line into argument vector. */
205static int make_args(char *line, char *n_argv[], int maxargs, int cmd_nb)
206{
207 static const char ws[] = " \t\r\n";
208 char *cp = line;
209 int n_argc = 0;
210
211 while (*cp) {
212 /* Skip leading whitespace. */
213 cp += strspn(cp, ws);
214
215 if (*cp == '\0')
216 break;
217
218 if (n_argc >= (maxargs - 1)) {
219 p_err("too many arguments to command %d", cmd_nb);
220 return -1;
221 }
222
223 /* Word begins with quote. */
224 if (*cp == '\'' || *cp == '"') {
225 char quote = *cp++;
226
227 n_argv[n_argc++] = cp;
228 /* Find ending quote. */
229 cp = strchr(cp, quote);
230 if (!cp) {
231 p_err("unterminated quoted string in command %d",
232 cmd_nb);
233 return -1;
234 }
235 } else {
236 n_argv[n_argc++] = cp;
237
238 /* Find end of word. */
239 cp += strcspn(cp, ws);
240 if (*cp == '\0')
241 break;
242 }
243
244 /* Separate words. */
245 *cp++ = 0;
246 }
247 n_argv[n_argc] = NULL;
248
249 return n_argc;
250}
251
252static int do_batch(int argc, char **argv);
253
254static const struct cmd cmds[] = {
255 { "help", do_help },
256 { "batch", do_batch },
257 { "prog", do_prog },
258 { "map", do_map },
259 { "link", do_link },
260 { "cgroup", do_cgroup },
261 { "perf", do_perf },
262 { "net", do_net },
263 { "feature", do_feature },
264 { "btf", do_btf },
265 { "gen", do_gen },
266 { "struct_ops", do_struct_ops },
267 { "iter", do_iter },
268 { "version", do_version },
269 { 0 }
270};
271
272static int do_batch(int argc, char **argv)
273{
274 char buf[BATCH_LINE_LEN_MAX], contline[BATCH_LINE_LEN_MAX];
275 char *n_argv[BATCH_ARG_NB_MAX];
276 unsigned int lines = 0;
277 int n_argc;
278 FILE *fp;
279 char *cp;
280 int err = 0;
281 int i;
282
283 if (argc < 2) {
284 p_err("too few parameters for batch");
285 return -1;
286 } else if (!is_prefix(*argv, "file")) {
287 p_err("expected 'file', got: %s", *argv);
288 return -1;
289 } else if (argc > 2) {
290 p_err("too many parameters for batch");
291 return -1;
292 }
293 NEXT_ARG();
294
295 if (!strcmp(*argv, "-"))
296 fp = stdin;
297 else
298 fp = fopen(*argv, "r");
299 if (!fp) {
300 p_err("Can't open file (%s): %s", *argv, strerror(errno));
301 return -1;
302 }
303
304 if (json_output)
305 jsonw_start_array(json_wtr);
306 while (fgets(buf, sizeof(buf), fp)) {
307 cp = strchr(buf, '#');
308 if (cp)
309 *cp = '\0';
310
311 if (strlen(buf) == sizeof(buf) - 1) {
312 errno = E2BIG;
313 break;
314 }
315
316 /* Append continuation lines if any (coming after a line ending
317 * with '\' in the batch file).
318 */
319 while ((cp = strstr(buf, "\\\n")) != NULL) {
320 if (!fgets(contline, sizeof(contline), fp) ||
321 strlen(contline) == 0) {
322 p_err("missing continuation line on command %d",
323 lines);
324 err = -1;
325 goto err_close;
326 }
327
328 cp = strchr(contline, '#');
329 if (cp)
330 *cp = '\0';
331
332 if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
333 p_err("command %d is too long", lines);
334 err = -1;
335 goto err_close;
336 }
337 buf[strlen(buf) - 2] = '\0';
338 strcat(buf, contline);
339 }
340
341 n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
342 if (!n_argc)
343 continue;
344 if (n_argc < 0) {
345 err = n_argc;
346 goto err_close;
347 }
348
349 if (json_output) {
350 jsonw_start_object(json_wtr);
351 jsonw_name(json_wtr, "command");
352 jsonw_start_array(json_wtr);
353 for (i = 0; i < n_argc; i++)
354 jsonw_string(json_wtr, n_argv[i]);
355 jsonw_end_array(json_wtr);
356 jsonw_name(json_wtr, "output");
357 }
358
359 err = cmd_select(cmds, n_argc, n_argv, do_help);
360
361 if (json_output)
362 jsonw_end_object(json_wtr);
363
364 if (err)
365 goto err_close;
366
367 lines++;
368 }
369
370 if (errno && errno != ENOENT) {
371 p_err("reading batch file failed: %s", strerror(errno));
372 err = -1;
373 } else {
374 if (!json_output)
375 printf("processed %d commands\n", lines);
376 }
377err_close:
378 if (fp != stdin)
379 fclose(fp);
380
381 if (json_output)
382 jsonw_end_array(json_wtr);
383
384 return err;
385}
386
387int main(int argc, char **argv)
388{
389 static const struct option options[] = {
390 { "json", no_argument, NULL, 'j' },
391 { "help", no_argument, NULL, 'h' },
392 { "pretty", no_argument, NULL, 'p' },
393 { "version", no_argument, NULL, 'V' },
394 { "bpffs", no_argument, NULL, 'f' },
395 { "mapcompat", no_argument, NULL, 'm' },
396 { "nomount", no_argument, NULL, 'n' },
397 { "debug", no_argument, NULL, 'd' },
398 { "use-loader", no_argument, NULL, 'L' },
399 { "base-btf", required_argument, NULL, 'B' },
400 { 0 }
401 };
402 int opt, ret;
403
404 last_do_help = do_help;
405 pretty_output = false;
406 json_output = false;
407 show_pinned = false;
408 block_mount = false;
409 bin_name = argv[0];
410
411 hash_init(prog_table.table);
412 hash_init(map_table.table);
413 hash_init(link_table.table);
414
415 opterr = 0;
416 while ((opt = getopt_long(argc, argv, "VhpjfLmndB:",
417 options, NULL)) >= 0) {
418 switch (opt) {
419 case 'V':
420 return do_version(argc, argv);
421 case 'h':
422 return do_help(argc, argv);
423 case 'p':
424 pretty_output = true;
425 /* fall through */
426 case 'j':
427 if (!json_output) {
428 json_wtr = jsonw_new(stdout);
429 if (!json_wtr) {
430 p_err("failed to create JSON writer");
431 return -1;
432 }
433 json_output = true;
434 }
435 jsonw_pretty(json_wtr, pretty_output);
436 break;
437 case 'f':
438 show_pinned = true;
439 break;
440 case 'm':
441 relaxed_maps = true;
442 break;
443 case 'n':
444 block_mount = true;
445 break;
446 case 'd':
447 libbpf_set_print(print_all_levels);
448 verifier_logs = true;
449 break;
450 case 'B':
451 base_btf = btf__parse(optarg, NULL);
452 if (libbpf_get_error(base_btf)) {
453 p_err("failed to parse base BTF at '%s': %ld\n",
454 optarg, libbpf_get_error(base_btf));
455 base_btf = NULL;
456 return -1;
457 }
458 break;
459 case 'L':
460 use_loader = true;
461 break;
462 default:
463 p_err("unrecognized option '%s'", argv[optind - 1]);
464 if (json_output)
465 clean_and_exit(-1);
466 else
467 usage();
468 }
469 }
470
471 argc -= optind;
472 argv += optind;
473 if (argc < 0)
474 usage();
475
476 ret = cmd_select(cmds, argc, argv, do_help);
477
478 if (json_output)
479 jsonw_destroy(&json_wtr);
480
481 if (show_pinned) {
482 delete_pinned_obj_table(&prog_table);
483 delete_pinned_obj_table(&map_table);
484 delete_pinned_obj_table(&link_table);
485 }
486 btf__free(base_btf);
487
488 return ret;
489}
1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2/* Copyright (C) 2017-2018 Netronome Systems, Inc. */
3
4#include <ctype.h>
5#include <errno.h>
6#include <getopt.h>
7#include <linux/bpf.h>
8#include <stdio.h>
9#include <stdlib.h>
10#include <string.h>
11
12#include <bpf/bpf.h>
13#include <bpf/libbpf.h>
14
15#include "main.h"
16
17#define BATCH_LINE_LEN_MAX 65536
18#define BATCH_ARG_NB_MAX 4096
19
20const char *bin_name;
21static int last_argc;
22static char **last_argv;
23static int (*last_do_help)(int argc, char **argv);
24json_writer_t *json_wtr;
25bool pretty_output;
26bool json_output;
27bool show_pinned;
28bool block_mount;
29bool verifier_logs;
30bool relaxed_maps;
31struct pinned_obj_table prog_table;
32struct pinned_obj_table map_table;
33struct pinned_obj_table link_table;
34struct obj_refs_table refs_table;
35
36static void __noreturn clean_and_exit(int i)
37{
38 if (json_output)
39 jsonw_destroy(&json_wtr);
40
41 exit(i);
42}
43
44void usage(void)
45{
46 last_do_help(last_argc - 1, last_argv + 1);
47
48 clean_and_exit(-1);
49}
50
51static int do_help(int argc, char **argv)
52{
53 if (json_output) {
54 jsonw_null(json_wtr);
55 return 0;
56 }
57
58 fprintf(stderr,
59 "Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
60 " %s batch file FILE\n"
61 " %s version\n"
62 "\n"
63 " OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }\n"
64 " " HELP_SPEC_OPTIONS "\n"
65 "",
66 bin_name, bin_name, bin_name);
67
68 return 0;
69}
70
71static int do_version(int argc, char **argv)
72{
73 if (json_output) {
74 jsonw_start_object(json_wtr);
75 jsonw_name(json_wtr, "version");
76 jsonw_printf(json_wtr, "\"%s\"", BPFTOOL_VERSION);
77 jsonw_end_object(json_wtr);
78 } else {
79 printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
80 }
81 return 0;
82}
83
84int cmd_select(const struct cmd *cmds, int argc, char **argv,
85 int (*help)(int argc, char **argv))
86{
87 unsigned int i;
88
89 last_argc = argc;
90 last_argv = argv;
91 last_do_help = help;
92
93 if (argc < 1 && cmds[0].func)
94 return cmds[0].func(argc, argv);
95
96 for (i = 0; cmds[i].cmd; i++) {
97 if (is_prefix(*argv, cmds[i].cmd)) {
98 if (!cmds[i].func) {
99 p_err("command '%s' is not supported in bootstrap mode",
100 cmds[i].cmd);
101 return -1;
102 }
103 return cmds[i].func(argc - 1, argv + 1);
104 }
105 }
106
107 help(argc - 1, argv + 1);
108
109 return -1;
110}
111
112bool is_prefix(const char *pfx, const char *str)
113{
114 if (!pfx)
115 return false;
116 if (strlen(str) < strlen(pfx))
117 return false;
118
119 return !memcmp(str, pfx, strlen(pfx));
120}
121
122/* Last argument MUST be NULL pointer */
123int detect_common_prefix(const char *arg, ...)
124{
125 unsigned int count = 0;
126 const char *ref;
127 char msg[256];
128 va_list ap;
129
130 snprintf(msg, sizeof(msg), "ambiguous prefix: '%s' could be '", arg);
131 va_start(ap, arg);
132 while ((ref = va_arg(ap, const char *))) {
133 if (!is_prefix(arg, ref))
134 continue;
135 count++;
136 if (count > 1)
137 strncat(msg, "' or '", sizeof(msg) - strlen(msg) - 1);
138 strncat(msg, ref, sizeof(msg) - strlen(msg) - 1);
139 }
140 va_end(ap);
141 strncat(msg, "'", sizeof(msg) - strlen(msg) - 1);
142
143 if (count >= 2) {
144 p_err("%s", msg);
145 return -1;
146 }
147
148 return 0;
149}
150
151void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep)
152{
153 unsigned char *data = arg;
154 unsigned int i;
155
156 for (i = 0; i < n; i++) {
157 const char *pfx = "";
158
159 if (!i)
160 /* nothing */;
161 else if (!(i % 16))
162 fprintf(f, "\n");
163 else if (!(i % 8))
164 fprintf(f, " ");
165 else
166 pfx = sep;
167
168 fprintf(f, "%s%02hhx", i ? pfx : "", data[i]);
169 }
170}
171
172/* Split command line into argument vector. */
173static int make_args(char *line, char *n_argv[], int maxargs, int cmd_nb)
174{
175 static const char ws[] = " \t\r\n";
176 char *cp = line;
177 int n_argc = 0;
178
179 while (*cp) {
180 /* Skip leading whitespace. */
181 cp += strspn(cp, ws);
182
183 if (*cp == '\0')
184 break;
185
186 if (n_argc >= (maxargs - 1)) {
187 p_err("too many arguments to command %d", cmd_nb);
188 return -1;
189 }
190
191 /* Word begins with quote. */
192 if (*cp == '\'' || *cp == '"') {
193 char quote = *cp++;
194
195 n_argv[n_argc++] = cp;
196 /* Find ending quote. */
197 cp = strchr(cp, quote);
198 if (!cp) {
199 p_err("unterminated quoted string in command %d",
200 cmd_nb);
201 return -1;
202 }
203 } else {
204 n_argv[n_argc++] = cp;
205
206 /* Find end of word. */
207 cp += strcspn(cp, ws);
208 if (*cp == '\0')
209 break;
210 }
211
212 /* Separate words. */
213 *cp++ = 0;
214 }
215 n_argv[n_argc] = NULL;
216
217 return n_argc;
218}
219
220static int do_batch(int argc, char **argv);
221
222static const struct cmd cmds[] = {
223 { "help", do_help },
224 { "batch", do_batch },
225 { "prog", do_prog },
226 { "map", do_map },
227 { "link", do_link },
228 { "cgroup", do_cgroup },
229 { "perf", do_perf },
230 { "net", do_net },
231 { "feature", do_feature },
232 { "btf", do_btf },
233 { "gen", do_gen },
234 { "struct_ops", do_struct_ops },
235 { "iter", do_iter },
236 { "version", do_version },
237 { 0 }
238};
239
240static int do_batch(int argc, char **argv)
241{
242 char buf[BATCH_LINE_LEN_MAX], contline[BATCH_LINE_LEN_MAX];
243 char *n_argv[BATCH_ARG_NB_MAX];
244 unsigned int lines = 0;
245 int n_argc;
246 FILE *fp;
247 char *cp;
248 int err;
249 int i;
250
251 if (argc < 2) {
252 p_err("too few parameters for batch");
253 return -1;
254 } else if (!is_prefix(*argv, "file")) {
255 p_err("expected 'file', got: %s", *argv);
256 return -1;
257 } else if (argc > 2) {
258 p_err("too many parameters for batch");
259 return -1;
260 }
261 NEXT_ARG();
262
263 if (!strcmp(*argv, "-"))
264 fp = stdin;
265 else
266 fp = fopen(*argv, "r");
267 if (!fp) {
268 p_err("Can't open file (%s): %s", *argv, strerror(errno));
269 return -1;
270 }
271
272 if (json_output)
273 jsonw_start_array(json_wtr);
274 while (fgets(buf, sizeof(buf), fp)) {
275 cp = strchr(buf, '#');
276 if (cp)
277 *cp = '\0';
278
279 if (strlen(buf) == sizeof(buf) - 1) {
280 errno = E2BIG;
281 break;
282 }
283
284 /* Append continuation lines if any (coming after a line ending
285 * with '\' in the batch file).
286 */
287 while ((cp = strstr(buf, "\\\n")) != NULL) {
288 if (!fgets(contline, sizeof(contline), fp) ||
289 strlen(contline) == 0) {
290 p_err("missing continuation line on command %d",
291 lines);
292 err = -1;
293 goto err_close;
294 }
295
296 cp = strchr(contline, '#');
297 if (cp)
298 *cp = '\0';
299
300 if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
301 p_err("command %d is too long", lines);
302 err = -1;
303 goto err_close;
304 }
305 buf[strlen(buf) - 2] = '\0';
306 strcat(buf, contline);
307 }
308
309 n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
310 if (!n_argc)
311 continue;
312 if (n_argc < 0)
313 goto err_close;
314
315 if (json_output) {
316 jsonw_start_object(json_wtr);
317 jsonw_name(json_wtr, "command");
318 jsonw_start_array(json_wtr);
319 for (i = 0; i < n_argc; i++)
320 jsonw_string(json_wtr, n_argv[i]);
321 jsonw_end_array(json_wtr);
322 jsonw_name(json_wtr, "output");
323 }
324
325 err = cmd_select(cmds, n_argc, n_argv, do_help);
326
327 if (json_output)
328 jsonw_end_object(json_wtr);
329
330 if (err)
331 goto err_close;
332
333 lines++;
334 }
335
336 if (errno && errno != ENOENT) {
337 p_err("reading batch file failed: %s", strerror(errno));
338 err = -1;
339 } else {
340 if (!json_output)
341 printf("processed %d commands\n", lines);
342 err = 0;
343 }
344err_close:
345 if (fp != stdin)
346 fclose(fp);
347
348 if (json_output)
349 jsonw_end_array(json_wtr);
350
351 return err;
352}
353
354int main(int argc, char **argv)
355{
356 static const struct option options[] = {
357 { "json", no_argument, NULL, 'j' },
358 { "help", no_argument, NULL, 'h' },
359 { "pretty", no_argument, NULL, 'p' },
360 { "version", no_argument, NULL, 'V' },
361 { "bpffs", no_argument, NULL, 'f' },
362 { "mapcompat", no_argument, NULL, 'm' },
363 { "nomount", no_argument, NULL, 'n' },
364 { "debug", no_argument, NULL, 'd' },
365 { 0 }
366 };
367 int opt, ret;
368
369 last_do_help = do_help;
370 pretty_output = false;
371 json_output = false;
372 show_pinned = false;
373 block_mount = false;
374 bin_name = argv[0];
375
376 hash_init(prog_table.table);
377 hash_init(map_table.table);
378 hash_init(link_table.table);
379
380 opterr = 0;
381 while ((opt = getopt_long(argc, argv, "Vhpjfmnd",
382 options, NULL)) >= 0) {
383 switch (opt) {
384 case 'V':
385 return do_version(argc, argv);
386 case 'h':
387 return do_help(argc, argv);
388 case 'p':
389 pretty_output = true;
390 /* fall through */
391 case 'j':
392 if (!json_output) {
393 json_wtr = jsonw_new(stdout);
394 if (!json_wtr) {
395 p_err("failed to create JSON writer");
396 return -1;
397 }
398 json_output = true;
399 }
400 jsonw_pretty(json_wtr, pretty_output);
401 break;
402 case 'f':
403 show_pinned = true;
404 break;
405 case 'm':
406 relaxed_maps = true;
407 break;
408 case 'n':
409 block_mount = true;
410 break;
411 case 'd':
412 libbpf_set_print(print_all_levels);
413 verifier_logs = true;
414 break;
415 default:
416 p_err("unrecognized option '%s'", argv[optind - 1]);
417 if (json_output)
418 clean_and_exit(-1);
419 else
420 usage();
421 }
422 }
423
424 argc -= optind;
425 argv += optind;
426 if (argc < 0)
427 usage();
428
429 ret = cmd_select(cmds, argc, argv, do_help);
430
431 if (json_output)
432 jsonw_destroy(&json_wtr);
433
434 if (show_pinned) {
435 delete_pinned_obj_table(&prog_table);
436 delete_pinned_obj_table(&map_table);
437 delete_pinned_obj_table(&link_table);
438 }
439
440 return ret;
441}