static int parse_events_resolve_symbol(int fd, char *event, int type)
{
char *colon, *end;
vaddr_t symbol_address;
int ret;
struct probe_cb_base base = {
.fd = fd,
.event = event
};
colon = strchr(event, ':');
if (!colon)
return 0;
base.ret_probe = !!strstr(event, "%return");
symbol_address = strtol(colon + 1 /* skip ":" */, NULL, 0);
base.binary = strndup(event, colon - event);
base.fetch_args = strchr(event, ' ');
/*
* We already have address, no need in resolving.
*/
if (symbol_address) {
int ret;
ret = write_uprobe_event(fd, base.ret_probe, base.binary,
"NULL", symbol_address,
base.fetch_args);
free(base.binary);
return ret;
}
end = strpbrk(event, "% ");
if (end)
base.symbol = strndup(colon + 1, end - 1 - colon);
else
base.symbol = strdup(colon + 1);
ret = parse_dso_symbols(base.binary, type, uprobe_symbol_actor,
(void *)&base);
if (!ret) {
fprintf(stderr, "error: cannot find symbol %s in binary %s\n",
base.symbol, base.binary);
ret = -1;
} else if(ret > 0) {
/* no error found when parse symbols */
ret = 0;
}
free(base.binary);
free(base.symbol);
return ret;
}
static void parse_option(int argc, char **argv)
{
char pid[32] = {0};
char cpu_str[32] = {0};
char *next_arg;
int i, j;
for (i = 1; i < argc; i++) {
if (argv[i][0] != '-') {
script_file = argv[i];
if (!script_file)
usage("");
script_args_start = i + 1;
script_args_end = argc;
for (j = i + 1; j < argc; j++) {
if (argv[j][0] == '-' && argv[j][1] == '-')
goto found_cmd;
}
return;
}
if (argv[i][0] == '-' && argv[i][1] == '-') {
j = i;
goto found_cmd;
}
next_arg = argv[i + 1];
switch (argv[i][1]) {
case 'o':
output_filename = malloc(strlen(next_arg) + 1);
if (!output_filename)
return;
strncpy(output_filename, next_arg, strlen(next_arg));
i++;
break;
case 'e':
strncpy(oneline_src, next_arg, strlen(next_arg));
i++;
break;
case 'p':
strncpy(pid, next_arg, strlen(next_arg));
trace_pid = atoi(pid);
i++;
break;
case 'C':
strncpy(cpu_str, next_arg, strlen(next_arg));
trace_cpu = atoi(cpu_str);
i++;
break;
case 'T':
print_timestamp = 1;
break;
case 'v':
verbose = 1;
break;
case 's':
sprintf(oneline_src, SIMPLE_ONE_LINER_FMT, next_arg);
i++;
break;
case 'b':
dump_bytecode = 1;
break;
#ifndef NO_LIBELF
case 'F':
case 'M': {
const char *binary = next_arg;
int type = argv[i][1] == 'F' ? FIND_SYMBOL : FIND_STAPSDT_NOTE;
struct binary_base base = {
.type = type,
.binary = binary,
};
int ret;
ret = parse_dso_symbols(binary, type,
print_symbol, (void *)&base);
if (ret <= 0) {
fprintf(stderr, "error: no symbols in binary %s\n",
binary);
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}
#endif
case 'V':
case '?':
case 'h':
usage("");
break;
default:
usage("wrong argument\n");
break;
}
}
return;
found_cmd:
script_args_end = j;
forks = 1;
workload_argv = &argv[j + 1];
}
static void parse_option(int argc, char **argv)
{
char pid[32] = {0};
char cpu_str[32] = {0};
char *next_arg;
int i, j;
for (i = 1; i < argc; i++) {
if (argv[i][0] != '-') {
script_file = argv[i];
if (!script_file)
usage("");
script_args_start = i + 1;
script_args_end = argc;
for (j = i + 1; j < argc; j++) {
if (argv[j][0] == '-' && argv[j][1] == '-')
goto found_cmd;
}
return;
}
if (argv[i][0] == '-' && argv[i][1] == '-') {
j = i;
goto found_cmd;
}
next_arg = argv[i + 1];
/* These flags require arguments. */
if (!next_arg && (argv[i][1] == 'o' || argv[i][1] == 'e' || argv[i][1] == 'p' || argv[i][1] == 'C' || argv[i][1] == 'l'))
usage("flag -%s requires an argument\n", argv[i][1]);
switch (argv[i][1]) {
case 'o':
output_filename = malloc(strlen(next_arg) + 1);
if (!output_filename)
return;
strncpy(output_filename, next_arg, strlen(next_arg));
i++;
break;
case 'e':
strncpy(oneline_src, next_arg, strlen(next_arg));
i++;
break;
case 'p':
strncpy(pid, next_arg, strlen(next_arg));
trace_pid = atoi(pid);
i++;
break;
case 'C':
strncpy(cpu_str, next_arg, strlen(next_arg));
trace_cpu = atoi(cpu_str);
i++;
break;
case 'T':
print_timestamp = 1;
break;
case 'v':
verbose = 1;
break;
case 'q':
quiet = 1;
break;
case 'd':
dry_run = 1;
break;
case 's':
sprintf(oneline_src, SIMPLE_ONE_LINER_FMT, next_arg);
i++;
break;
case 'b':
dump_bytecode = 1;
break;
case 'l': /* list available events */
switch (argv[i][2]) {
case 'e': /* tracepoints */
list_available_events(next_arg);
exit(EXIT_SUCCESS);
#ifndef NO_LIBELF
case 'f': /* functions in DSO */
case 'm': /* static marks in DSO */ {
const char *binary = next_arg;
int type = argv[i][2] == 'f' ?
FIND_SYMBOL : FIND_STAPSDT_NOTE;
struct binary_base base = {
.type = type,
.binary = binary,
};
int ret;
ret = parse_dso_symbols(binary, type,
print_symbol,
(void *)&base);
if (ret <= 0) {
fprintf(stderr,
"error: no symbols in binary %s\n",
binary);
exit(EXIT_FAILURE);
}
exit(EXIT_SUCCESS);
}
#endif
default:
exit(EXIT_FAILURE);
}
break;
case 'V':
#ifdef CONFIG_KTAP_FFI
usage("%s (with FFI)\n\n", KTAP_VERSION);
#else
usage("%s\n\n", KTAP_VERSION);
#endif
break;
case '?':
case 'h':
usage("");
break;
default:
usage("wrong argument\n");
break;
}
}
return;
found_cmd:
script_args_end = j;
forks = 1;
workload_argv = &argv[j + 1];
}
