1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
13 #include <bpf/libbpf.h>
17 #define BATCH_LINE_LEN_MAX 65536
18 #define BATCH_ARG_NB_MAX 4096
22 static char **last_argv;
23 static int (*last_do_help)(int argc, char **argv);
24 json_writer_t *json_wtr;
31 struct pinned_obj_table prog_table;
32 struct pinned_obj_table map_table;
33 struct pinned_obj_table link_table;
34 struct obj_refs_table refs_table;
36 static void __noreturn clean_and_exit(int i)
39 jsonw_destroy(&json_wtr);
46 last_do_help(last_argc - 1, last_argv + 1);
51 static int do_help(int argc, char **argv)
59 "Usage: %s [OPTIONS] OBJECT { COMMAND | help }\n"
60 " %s batch file FILE\n"
63 " OBJECT := { prog | map | link | cgroup | perf | net | feature | btf | gen | struct_ops | iter }\n"
64 " " HELP_SPEC_OPTIONS "\n"
66 bin_name, bin_name, bin_name);
71 static int do_version(int argc, char **argv)
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);
79 printf("%s v%s\n", bin_name, BPFTOOL_VERSION);
84 int cmd_select(const struct cmd *cmds, int argc, char **argv,
85 int (*help)(int argc, char **argv))
93 if (argc < 1 && cmds[0].func)
94 return cmds[0].func(argc, argv);
96 for (i = 0; cmds[i].cmd; i++) {
97 if (is_prefix(*argv, cmds[i].cmd)) {
99 p_err("command '%s' is not supported in bootstrap mode",
103 return cmds[i].func(argc - 1, argv + 1);
107 help(argc - 1, argv + 1);
112 bool is_prefix(const char *pfx, const char *str)
116 if (strlen(str) < strlen(pfx))
119 return !memcmp(str, pfx, strlen(pfx));
122 /* Last argument MUST be NULL pointer */
123 int detect_common_prefix(const char *arg, ...)
125 unsigned int count = 0;
130 snprintf(msg, sizeof(msg), "ambiguous prefix: '%s' could be '", arg);
132 while ((ref = va_arg(ap, const char *))) {
133 if (!is_prefix(arg, ref))
137 strncat(msg, "' or '", sizeof(msg) - strlen(msg) - 1);
138 strncat(msg, ref, sizeof(msg) - strlen(msg) - 1);
141 strncat(msg, "'", sizeof(msg) - strlen(msg) - 1);
151 void fprint_hex(FILE *f, void *arg, unsigned int n, const char *sep)
153 unsigned char *data = arg;
156 for (i = 0; i < n; i++) {
157 const char *pfx = "";
168 fprintf(f, "%s%02hhx", i ? pfx : "", data[i]);
172 /* Split command line into argument vector. */
173 static int make_args(char *line, char *n_argv[], int maxargs, int cmd_nb)
175 static const char ws[] = " \t\r\n";
180 /* Skip leading whitespace. */
181 cp += strspn(cp, ws);
186 if (n_argc >= (maxargs - 1)) {
187 p_err("too many arguments to command %d", cmd_nb);
191 /* Word begins with quote. */
192 if (*cp == '\'' || *cp == '"') {
195 n_argv[n_argc++] = cp;
196 /* Find ending quote. */
197 cp = strchr(cp, quote);
199 p_err("unterminated quoted string in command %d",
204 n_argv[n_argc++] = cp;
206 /* Find end of word. */
207 cp += strcspn(cp, ws);
212 /* Separate words. */
215 n_argv[n_argc] = NULL;
220 static int do_batch(int argc, char **argv);
222 static const struct cmd cmds[] = {
224 { "batch", do_batch },
228 { "cgroup", do_cgroup },
231 { "feature", do_feature },
234 { "struct_ops", do_struct_ops },
236 { "version", do_version },
240 static int do_batch(int argc, char **argv)
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;
252 p_err("too few parameters for batch");
254 } else if (!is_prefix(*argv, "file")) {
255 p_err("expected 'file', got: %s", *argv);
257 } else if (argc > 2) {
258 p_err("too many parameters for batch");
263 if (!strcmp(*argv, "-"))
266 fp = fopen(*argv, "r");
268 p_err("Can't open file (%s): %s", *argv, strerror(errno));
273 jsonw_start_array(json_wtr);
274 while (fgets(buf, sizeof(buf), fp)) {
275 cp = strchr(buf, '#');
279 if (strlen(buf) == sizeof(buf) - 1) {
284 /* Append continuation lines if any (coming after a line ending
285 * with '\' in the batch file).
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",
296 cp = strchr(contline, '#');
300 if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
301 p_err("command %d is too long", lines);
305 buf[strlen(buf) - 2] = '\0';
306 strcat(buf, contline);
309 n_argc = make_args(buf, n_argv, BATCH_ARG_NB_MAX, lines);
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");
325 err = cmd_select(cmds, n_argc, n_argv, do_help);
328 jsonw_end_object(json_wtr);
336 if (errno && errno != ENOENT) {
337 p_err("reading batch file failed: %s", strerror(errno));
341 printf("processed %d commands\n", lines);
349 jsonw_end_array(json_wtr);
354 int main(int argc, char **argv)
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' },
369 last_do_help = do_help;
370 pretty_output = false;
376 hash_init(prog_table.table);
377 hash_init(map_table.table);
378 hash_init(link_table.table);
381 while ((opt = getopt_long(argc, argv, "Vhpjfmnd",
382 options, NULL)) >= 0) {
385 return do_version(argc, argv);
387 return do_help(argc, argv);
389 pretty_output = true;
393 json_wtr = jsonw_new(stdout);
395 p_err("failed to create JSON writer");
400 jsonw_pretty(json_wtr, pretty_output);
412 libbpf_set_print(print_all_levels);
413 verifier_logs = true;
416 p_err("unrecognized option '%s'", argv[optind - 1]);
429 ret = cmd_select(cmds, argc, argv, do_help);
432 jsonw_destroy(&json_wtr);
435 delete_pinned_obj_table(&prog_table);
436 delete_pinned_obj_table(&map_table);
437 delete_pinned_obj_table(&link_table);