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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/btf.h>
14#include <bpf/hashmap.h>
15#include <bpf/libbpf.h>
16
17#include "main.h"
18
19#define BATCH_LINE_LEN_MAX 65536
20#define BATCH_ARG_NB_MAX 4096
21
22const char *bin_name;
23static int last_argc;
24static char **last_argv;
25static int (*last_do_help)(int argc, char **argv);
26json_writer_t *json_wtr;
27bool pretty_output;
28bool json_output;
29bool show_pinned;
30bool block_mount;
31bool verifier_logs;
32bool relaxed_maps;
33bool use_loader;
34struct btf *base_btf;
35struct hashmap *refs_table;
36
37static void __noreturn clean_and_exit(int i)
38{
39 if (json_output)
40 jsonw_destroy(&json_wtr);
41
42 exit(i);
43}
44
45void usage(void)
46{
47 last_do_help(last_argc - 1, last_argv + 1);
48
49 clean_and_exit(-1);
50}
51
52static int do_help(int argc, char **argv)
53{
54 if (json_output) {
55 jsonw_null(json_wtr);
56 return 0;
57 }
58
59 fprintf(stderr,
60 "Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
61 " %s batch file FILE\n"
62 " %s version\n"
63 "\n"
64 " OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }\n"
65 " " HELP_SPEC_OPTIONS " |\n"
66 " {-V|--version} }\n"
67 "",
68 bin_name, bin_name, bin_name);
69
70 return 0;
71}
72
73static int do_batch(int argc, char **argv);
74static int do_version(int argc, char **argv);
75
76static const struct cmd commands[] = {
77 { "help", do_help },
78 { "batch", do_batch },
79 { "prog", do_prog },
80 { "map", do_map },
81 { "link", do_link },
82 { "cgroup", do_cgroup },
83 { "perf", do_perf },
84 { "net", do_net },
85 { "feature", do_feature },
86 { "btf", do_btf },
87 { "gen", do_gen },
88 { "struct_ops", do_struct_ops },
89 { "iter", do_iter },
90 { "version", do_version },
91 { 0 }
92};
93
94#ifndef BPFTOOL_VERSION
95/* bpftool's major and minor version numbers are aligned on libbpf's. There is
96 * an offset of 6 for the version number, because bpftool's version was higher
97 * than libbpf's when we adopted this scheme. The patch number remains at 0
98 * for now. Set BPFTOOL_VERSION to override.
99 */
100#define BPFTOOL_MAJOR_VERSION (LIBBPF_MAJOR_VERSION + 6)
101#define BPFTOOL_MINOR_VERSION LIBBPF_MINOR_VERSION
102#define BPFTOOL_PATCH_VERSION 0
103#endif
104
105static void
106print_feature(const char *feature, bool state, unsigned int *nb_features)
107{
108 if (state) {
109 printf("%s %s", *nb_features ? "," : "", feature);
110 *nb_features = *nb_features + 1;
111 }
112}
113
114static int do_version(int argc, char **argv)
115{
116#ifdef HAVE_LIBBFD_SUPPORT
117 const bool has_libbfd = true;
118#else
119 const bool has_libbfd = false;
120#endif
121#ifdef HAVE_LLVM_SUPPORT
122 const bool has_llvm = true;
123#else
124 const bool has_llvm = false;
125#endif
126#ifdef BPFTOOL_WITHOUT_SKELETONS
127 const bool has_skeletons = false;
128#else
129 const bool has_skeletons = true;
130#endif
131 bool bootstrap = false;
132 int i;
133
134 for (i = 0; commands[i].cmd; i++) {
135 if (!strcmp(commands[i].cmd, "prog")) {
136 /* Assume we run a bootstrap version if "bpftool prog"
137 * is not available.
138 */
139 bootstrap = !commands[i].func;
140 break;
141 }
142 }
143
144 if (json_output) {
145 jsonw_start_object(json_wtr); /* root object */
146
147 jsonw_name(json_wtr, "version");
148#ifdef BPFTOOL_VERSION
149 jsonw_printf(json_wtr, "\"%s\"", BPFTOOL_VERSION);
150#else
151 jsonw_printf(json_wtr, "\"%d.%d.%d\"", BPFTOOL_MAJOR_VERSION,
152 BPFTOOL_MINOR_VERSION, BPFTOOL_PATCH_VERSION);
153#endif
154 jsonw_name(json_wtr, "libbpf_version");
155 jsonw_printf(json_wtr, "\"%d.%d\"",
156 libbpf_major_version(), libbpf_minor_version());
157
158 jsonw_name(json_wtr, "features");
159 jsonw_start_object(json_wtr); /* features */
160 jsonw_bool_field(json_wtr, "libbfd", has_libbfd);
161 jsonw_bool_field(json_wtr, "llvm", has_llvm);
162 jsonw_bool_field(json_wtr, "skeletons", has_skeletons);
163 jsonw_bool_field(json_wtr, "bootstrap", bootstrap);
164 jsonw_end_object(json_wtr); /* features */
165
166 jsonw_end_object(json_wtr); /* root object */
167 } else {
168 unsigned int nb_features = 0;
169
170#ifdef BPFTOOL_VERSION
171 printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
172#else
173 printf("%s v%d.%d.%d\n", bin_name, BPFTOOL_MAJOR_VERSION,
174 BPFTOOL_MINOR_VERSION, BPFTOOL_PATCH_VERSION);
175#endif
176 printf("using libbpf %s\n", libbpf_version_string());
177 printf("features:");
178 print_feature("libbfd", has_libbfd, &nb_features);
179 print_feature("llvm", has_llvm, &nb_features);
180 print_feature("skeletons", has_skeletons, &nb_features);
181 print_feature("bootstrap", bootstrap, &nb_features);
182 printf("\n");
183 }
184 return 0;
185}
186
187int cmd_select(const struct cmd *cmds, int argc, char **argv,
188 int (*help)(int argc, char **argv))
189{
190 unsigned int i;
191
192 last_argc = argc;
193 last_argv = argv;
194 last_do_help = help;
195
196 if (argc < 1 && cmds[0].func)
197 return cmds[0].func(argc, argv);
198
199 for (i = 0; cmds[i].cmd; i++) {
200 if (is_prefix(*argv, cmds[i].cmd)) {
201 if (!cmds[i].func) {
202 p_err("command '%s' is not supported in bootstrap mode",
203 cmds[i].cmd);
204 return -1;
205 }
206 return cmds[i].func(argc - 1, argv + 1);
207 }
208 }
209
210 help(argc - 1, argv + 1);
211
212 return -1;
213}
214
215bool is_prefix(const char *pfx, const char *str)
216{
217 if (!pfx)
218 return false;
219 if (strlen(str) < strlen(pfx))
220 return false;
221
222 return !memcmp(str, pfx, strlen(pfx));
223}
224
225/* Last argument MUST be NULL pointer */
226int detect_common_prefix(const char *arg, ...)
227{
228 unsigned int count = 0;
229 const char *ref;
230 char msg[256];
231 va_list ap;
232
233 snprintf(msg, sizeof(msg), "ambiguous prefix: '%s' could be '", arg);
234 va_start(ap, arg);
235 while ((ref = va_arg(ap, const char *))) {
236 if (!is_prefix(arg, ref))
237 continue;
238 count++;
239 if (count > 1)
240 strncat(msg, "' or '", sizeof(msg) - strlen(msg) - 1);
241 strncat(msg, ref, sizeof(msg) - strlen(msg) - 1);
242 }
243 va_end(ap);
244 strncat(msg, "'", sizeof(msg) - strlen(msg) - 1);
245
246 if (count >= 2) {
247 p_err("%s", msg);
248 return -1;
249 }
250
251 return 0;
252}
253
254void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep)
255{
256 unsigned char *data = arg;
257 unsigned int i;
258
259 for (i = 0; i < n; i++) {
260 const char *pfx = "";
261
262 if (!i)
263 /* nothing */;
264 else if (!(i % 16))
265 fprintf(f, "\n");
266 else if (!(i % 8))
267 fprintf(f, " ");
268 else
269 pfx = sep;
270
271 fprintf(f, "%s%02hhx", i ? pfx : "", data[i]);
272 }
273}
274
275/* Split command line into argument vector. */
276static int make_args(char *line, char *n_argv[], int maxargs, int cmd_nb)
277{
278 static const char ws[] = " \t\r\n";
279 char *cp = line;
280 int n_argc = 0;
281
282 while (*cp) {
283 /* Skip leading whitespace. */
284 cp += strspn(cp, ws);
285
286 if (*cp == '\0')
287 break;
288
289 if (n_argc >= (maxargs - 1)) {
290 p_err("too many arguments to command %d", cmd_nb);
291 return -1;
292 }
293
294 /* Word begins with quote. */
295 if (*cp == '\'' || *cp == '"') {
296 char quote = *cp++;
297
298 n_argv[n_argc++] = cp;
299 /* Find ending quote. */
300 cp = strchr(cp, quote);
301 if (!cp) {
302 p_err("unterminated quoted string in command %d",
303 cmd_nb);
304 return -1;
305 }
306 } else {
307 n_argv[n_argc++] = cp;
308
309 /* Find end of word. */
310 cp += strcspn(cp, ws);
311 if (*cp == '\0')
312 break;
313 }
314
315 /* Separate words. */
316 *cp++ = 0;
317 }
318 n_argv[n_argc] = NULL;
319
320 return n_argc;
321}
322
323static int do_batch(int argc, char **argv)
324{
325 char buf[BATCH_LINE_LEN_MAX], contline[BATCH_LINE_LEN_MAX];
326 char *n_argv[BATCH_ARG_NB_MAX];
327 unsigned int lines = 0;
328 int n_argc;
329 FILE *fp;
330 char *cp;
331 int err = 0;
332 int i;
333
334 if (argc < 2) {
335 p_err("too few parameters for batch");
336 return -1;
337 } else if (argc > 2) {
338 p_err("too many parameters for batch");
339 return -1;
340 } else if (!is_prefix(*argv, "file")) {
341 p_err("expected 'file', got: %s", *argv);
342 return -1;
343 }
344 NEXT_ARG();
345
346 if (!strcmp(*argv, "-"))
347 fp = stdin;
348 else
349 fp = fopen(*argv, "r");
350 if (!fp) {
351 p_err("Can't open file (%s): %s", *argv, strerror(errno));
352 return -1;
353 }
354
355 if (json_output)
356 jsonw_start_array(json_wtr);
357 while (fgets(buf, sizeof(buf), fp)) {
358 cp = strchr(buf, '#');
359 if (cp)
360 *cp = '\0';
361
362 if (strlen(buf) == sizeof(buf) - 1) {
363 errno = E2BIG;
364 break;
365 }
366
367 /* Append continuation lines if any (coming after a line ending
368 * with '\' in the batch file).
369 */
370 while ((cp = strstr(buf, "\\\n")) != NULL) {
371 if (!fgets(contline, sizeof(contline), fp) ||
372 strlen(contline) == 0) {
373 p_err("missing continuation line on command %d",
374 lines);
375 err = -1;
376 goto err_close;
377 }
378
379 cp = strchr(contline, '#');
380 if (cp)
381 *cp = '\0';
382
383 if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
384 p_err("command %d is too long", lines);
385 err = -1;
386 goto err_close;
387 }
388 buf[strlen(buf) - 2] = '\0';
389 strcat(buf, contline);
390 }
391
392 n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
393 if (!n_argc)
394 continue;
395 if (n_argc < 0) {
396 err = n_argc;
397 goto err_close;
398 }
399
400 if (json_output) {
401 jsonw_start_object(json_wtr);
402 jsonw_name(json_wtr, "command");
403 jsonw_start_array(json_wtr);
404 for (i = 0; i < n_argc; i++)
405 jsonw_string(json_wtr, n_argv[i]);
406 jsonw_end_array(json_wtr);
407 jsonw_name(json_wtr, "output");
408 }
409
410 err = cmd_select(commands, n_argc, n_argv, do_help);
411
412 if (json_output)
413 jsonw_end_object(json_wtr);
414
415 if (err)
416 goto err_close;
417
418 lines++;
419 }
420
421 if (errno && errno != ENOENT) {
422 p_err("reading batch file failed: %s", strerror(errno));
423 err = -1;
424 } else {
425 if (!json_output)
426 printf("processed %d commands\n", lines);
427 }
428err_close:
429 if (fp != stdin)
430 fclose(fp);
431
432 if (json_output)
433 jsonw_end_array(json_wtr);
434
435 return err;
436}
437
438int main(int argc, char **argv)
439{
440 static const struct option options[] = {
441 { "json", no_argument, NULL, 'j' },
442 { "help", no_argument, NULL, 'h' },
443 { "pretty", no_argument, NULL, 'p' },
444 { "version", no_argument, NULL, 'V' },
445 { "bpffs", no_argument, NULL, 'f' },
446 { "mapcompat", no_argument, NULL, 'm' },
447 { "nomount", no_argument, NULL, 'n' },
448 { "debug", no_argument, NULL, 'd' },
449 { "use-loader", no_argument, NULL, 'L' },
450 { "base-btf", required_argument, NULL, 'B' },
451 { 0 }
452 };
453 bool version_requested = false;
454 int opt, ret;
455
456 setlinebuf(stdout);
457
458#ifdef USE_LIBCAP
459 /* Libcap < 2.63 hooks before main() to compute the number of
460 * capabilities of the running kernel, and doing so it calls prctl()
461 * which may fail and set errno to non-zero.
462 * Let's reset errno to make sure this does not interfere with the
463 * batch mode.
464 */
465 errno = 0;
466#endif
467
468 last_do_help = do_help;
469 pretty_output = false;
470 json_output = false;
471 show_pinned = false;
472 block_mount = false;
473 bin_name = "bpftool";
474
475 opterr = 0;
476 while ((opt = getopt_long(argc, argv, "VhpjfLmndB:l",
477 options, NULL)) >= 0) {
478 switch (opt) {
479 case 'V':
480 version_requested = true;
481 break;
482 case 'h':
483 return do_help(argc, argv);
484 case 'p':
485 pretty_output = true;
486 /* fall through */
487 case 'j':
488 if (!json_output) {
489 json_wtr = jsonw_new(stdout);
490 if (!json_wtr) {
491 p_err("failed to create JSON writer");
492 return -1;
493 }
494 json_output = true;
495 }
496 jsonw_pretty(json_wtr, pretty_output);
497 break;
498 case 'f':
499 show_pinned = true;
500 break;
501 case 'm':
502 relaxed_maps = true;
503 break;
504 case 'n':
505 block_mount = true;
506 break;
507 case 'd':
508 libbpf_set_print(print_all_levels);
509 verifier_logs = true;
510 break;
511 case 'B':
512 base_btf = btf__parse(optarg, NULL);
513 if (!base_btf) {
514 p_err("failed to parse base BTF at '%s': %d\n",
515 optarg, -errno);
516 return -1;
517 }
518 break;
519 case 'L':
520 use_loader = true;
521 break;
522 default:
523 p_err("unrecognized option '%s'", argv[optind - 1]);
524 if (json_output)
525 clean_and_exit(-1);
526 else
527 usage();
528 }
529 }
530
531 argc -= optind;
532 argv += optind;
533 if (argc < 0)
534 usage();
535
536 if (version_requested)
537 return do_version(argc, argv);
538
539 ret = cmd_select(commands, argc, argv, do_help);
540
541 if (json_output)
542 jsonw_destroy(&json_wtr);
543
544 btf__free(base_btf);
545
546 return ret;
547}
1/*
2 * Copyright (C) 2017 Netronome Systems, Inc.
3 *
4 * This software is dual licensed under the GNU General License Version 2,
5 * June 1991 as shown in the file COPYING in the top-level directory of this
6 * source tree or the BSD 2-Clause License provided below. You have the
7 * option to license this software under the complete terms of either license.
8 *
9 * The BSD 2-Clause License:
10 *
11 * Redistribution and use in source and binary forms, with or
12 * without modification, are permitted provided that the following
13 * conditions are met:
14 *
15 * 1. Redistributions of source code must retain the above
16 * copyright notice, this list of conditions and the following
17 * disclaimer.
18 *
19 * 2. Redistributions in binary form must reproduce the above
20 * copyright notice, this list of conditions and the following
21 * disclaimer in the documentation and/or other materials
22 * provided with the distribution.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
28 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
29 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
30 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
31 * SOFTWARE.
32 */
33
34/* Author: Jakub Kicinski <kubakici@wp.pl> */
35
36#include <bfd.h>
37#include <ctype.h>
38#include <errno.h>
39#include <getopt.h>
40#include <linux/bpf.h>
41#include <stdio.h>
42#include <stdlib.h>
43#include <string.h>
44
45#include <bpf.h>
46
47#include "main.h"
48
49#define BATCH_LINE_LEN_MAX 65536
50#define BATCH_ARG_NB_MAX 4096
51
52const char *bin_name;
53static int last_argc;
54static char **last_argv;
55static int (*last_do_help)(int argc, char **argv);
56json_writer_t *json_wtr;
57bool pretty_output;
58bool json_output;
59bool show_pinned;
60struct pinned_obj_table prog_table;
61struct pinned_obj_table map_table;
62
63static void __noreturn clean_and_exit(int i)
64{
65 if (json_output)
66 jsonw_destroy(&json_wtr);
67
68 exit(i);
69}
70
71void usage(void)
72{
73 last_do_help(last_argc - 1, last_argv + 1);
74
75 clean_and_exit(-1);
76}
77
78static int do_help(int argc, char **argv)
79{
80 if (json_output) {
81 jsonw_null(json_wtr);
82 return 0;
83 }
84
85 fprintf(stderr,
86 "Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
87 " %s batch file FILE\n"
88 " %s version\n"
89 "\n"
90 " OBJECT := { prog | map | cgroup }\n"
91 " " HELP_SPEC_OPTIONS "\n"
92 "",
93 bin_name, bin_name, bin_name);
94
95 return 0;
96}
97
98static int do_version(int argc, char **argv)
99{
100 if (json_output) {
101 jsonw_start_object(json_wtr);
102 jsonw_name(json_wtr, "version");
103 jsonw_printf(json_wtr, "\"%s\"", BPFTOOL_VERSION);
104 jsonw_end_object(json_wtr);
105 } else {
106 printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
107 }
108 return 0;
109}
110
111int cmd_select(const struct cmd *cmds, int argc, char **argv,
112 int (*help)(int argc, char **argv))
113{
114 unsigned int i;
115
116 last_argc = argc;
117 last_argv = argv;
118 last_do_help = help;
119
120 if (argc < 1 && cmds[0].func)
121 return cmds[0].func(argc, argv);
122
123 for (i = 0; cmds[i].func; i++)
124 if (is_prefix(*argv, cmds[i].cmd))
125 return cmds[i].func(argc - 1, argv + 1);
126
127 help(argc - 1, argv + 1);
128
129 return -1;
130}
131
132bool is_prefix(const char *pfx, const char *str)
133{
134 if (!pfx)
135 return false;
136 if (strlen(str) < strlen(pfx))
137 return false;
138
139 return !memcmp(str, pfx, strlen(pfx));
140}
141
142void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep)
143{
144 unsigned char *data = arg;
145 unsigned int i;
146
147 for (i = 0; i < n; i++) {
148 const char *pfx = "";
149
150 if (!i)
151 /* nothing */;
152 else if (!(i % 16))
153 fprintf(f, "\n");
154 else if (!(i % 8))
155 fprintf(f, " ");
156 else
157 pfx = sep;
158
159 fprintf(f, "%s%02hhx", i ? pfx : "", data[i]);
160 }
161}
162
163/* Split command line into argument vector. */
164static int make_args(char *line, char *n_argv[], int maxargs, int cmd_nb)
165{
166 static const char ws[] = " \t\r\n";
167 char *cp = line;
168 int n_argc = 0;
169
170 while (*cp) {
171 /* Skip leading whitespace. */
172 cp += strspn(cp, ws);
173
174 if (*cp == '\0')
175 break;
176
177 if (n_argc >= (maxargs - 1)) {
178 p_err("too many arguments to command %d", cmd_nb);
179 return -1;
180 }
181
182 /* Word begins with quote. */
183 if (*cp == '\'' || *cp == '"') {
184 char quote = *cp++;
185
186 n_argv[n_argc++] = cp;
187 /* Find ending quote. */
188 cp = strchr(cp, quote);
189 if (!cp) {
190 p_err("unterminated quoted string in command %d",
191 cmd_nb);
192 return -1;
193 }
194 } else {
195 n_argv[n_argc++] = cp;
196
197 /* Find end of word. */
198 cp += strcspn(cp, ws);
199 if (*cp == '\0')
200 break;
201 }
202
203 /* Separate words. */
204 *cp++ = 0;
205 }
206 n_argv[n_argc] = NULL;
207
208 return n_argc;
209}
210
211static int do_batch(int argc, char **argv);
212
213static const struct cmd cmds[] = {
214 { "help", do_help },
215 { "batch", do_batch },
216 { "prog", do_prog },
217 { "map", do_map },
218 { "cgroup", do_cgroup },
219 { "version", do_version },
220 { 0 }
221};
222
223static int do_batch(int argc, char **argv)
224{
225 char buf[BATCH_LINE_LEN_MAX], contline[BATCH_LINE_LEN_MAX];
226 char *n_argv[BATCH_ARG_NB_MAX];
227 unsigned int lines = 0;
228 int n_argc;
229 FILE *fp;
230 char *cp;
231 int err;
232 int i;
233
234 if (argc < 2) {
235 p_err("too few parameters for batch");
236 return -1;
237 } else if (!is_prefix(*argv, "file")) {
238 p_err("expected 'file', got: %s", *argv);
239 return -1;
240 } else if (argc > 2) {
241 p_err("too many parameters for batch");
242 return -1;
243 }
244 NEXT_ARG();
245
246 if (!strcmp(*argv, "-"))
247 fp = stdin;
248 else
249 fp = fopen(*argv, "r");
250 if (!fp) {
251 p_err("Can't open file (%s): %s", *argv, strerror(errno));
252 return -1;
253 }
254
255 if (json_output)
256 jsonw_start_array(json_wtr);
257 while (fgets(buf, sizeof(buf), fp)) {
258 cp = strchr(buf, '#');
259 if (cp)
260 *cp = '\0';
261
262 if (strlen(buf) == sizeof(buf) - 1) {
263 errno = E2BIG;
264 break;
265 }
266
267 /* Append continuation lines if any (coming after a line ending
268 * with '\' in the batch file).
269 */
270 while ((cp = strstr(buf, "\\\n")) != NULL) {
271 if (!fgets(contline, sizeof(contline), fp) ||
272 strlen(contline) == 0) {
273 p_err("missing continuation line on command %d",
274 lines);
275 err = -1;
276 goto err_close;
277 }
278
279 cp = strchr(contline, '#');
280 if (cp)
281 *cp = '\0';
282
283 if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
284 p_err("command %d is too long", lines);
285 err = -1;
286 goto err_close;
287 }
288 buf[strlen(buf) - 2] = '\0';
289 strcat(buf, contline);
290 }
291
292 n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
293 if (!n_argc)
294 continue;
295 if (n_argc < 0)
296 goto err_close;
297
298 if (json_output) {
299 jsonw_start_object(json_wtr);
300 jsonw_name(json_wtr, "command");
301 jsonw_start_array(json_wtr);
302 for (i = 0; i < n_argc; i++)
303 jsonw_string(json_wtr, n_argv[i]);
304 jsonw_end_array(json_wtr);
305 jsonw_name(json_wtr, "output");
306 }
307
308 err = cmd_select(cmds, n_argc, n_argv, do_help);
309
310 if (json_output)
311 jsonw_end_object(json_wtr);
312
313 if (err)
314 goto err_close;
315
316 lines++;
317 }
318
319 if (errno && errno != ENOENT) {
320 p_err("reading batch file failed: %s", strerror(errno));
321 err = -1;
322 } else {
323 p_info("processed %d commands", lines);
324 err = 0;
325 }
326err_close:
327 if (fp != stdin)
328 fclose(fp);
329
330 if (json_output)
331 jsonw_end_array(json_wtr);
332
333 return err;
334}
335
336int main(int argc, char **argv)
337{
338 static const struct option options[] = {
339 { "json", no_argument, NULL, 'j' },
340 { "help", no_argument, NULL, 'h' },
341 { "pretty", no_argument, NULL, 'p' },
342 { "version", no_argument, NULL, 'V' },
343 { "bpffs", no_argument, NULL, 'f' },
344 { 0 }
345 };
346 int opt, ret;
347
348 last_do_help = do_help;
349 pretty_output = false;
350 json_output = false;
351 show_pinned = false;
352 bin_name = argv[0];
353
354 hash_init(prog_table.table);
355 hash_init(map_table.table);
356
357 opterr = 0;
358 while ((opt = getopt_long(argc, argv, "Vhpjf",
359 options, NULL)) >= 0) {
360 switch (opt) {
361 case 'V':
362 return do_version(argc, argv);
363 case 'h':
364 return do_help(argc, argv);
365 case 'p':
366 pretty_output = true;
367 /* fall through */
368 case 'j':
369 if (!json_output) {
370 json_wtr = jsonw_new(stdout);
371 if (!json_wtr) {
372 p_err("failed to create JSON writer");
373 return -1;
374 }
375 json_output = true;
376 }
377 jsonw_pretty(json_wtr, pretty_output);
378 break;
379 case 'f':
380 show_pinned = true;
381 break;
382 default:
383 p_err("unrecognized option '%s'", argv[optind - 1]);
384 if (json_output)
385 clean_and_exit(-1);
386 else
387 usage();
388 }
389 }
390
391 argc -= optind;
392 argv += optind;
393 if (argc < 0)
394 usage();
395
396 bfd_init();
397
398 ret = cmd_select(cmds, argc, argv, do_help);
399
400 if (json_output)
401 jsonw_destroy(&json_wtr);
402
403 if (show_pinned) {
404 delete_pinned_obj_table(&prog_table);
405 delete_pinned_obj_table(&map_table);
406 }
407
408 return ret;
409}