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#include <stdio.h>
#include <unistd.h>
#include <linux/bpf.h>
#include <string.h>
#include <assert.h>
#include <sys/resource.h>
#include "libbpf.h"
#include "bpf_load.h"
int main(int ac, char **argv)
{
struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
long key, next_key, value;
char filename[256];
struct ksym *sym;
int i;
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
setrlimit(RLIMIT_MEMLOCK, &r);
if (load_kallsyms()) {
printf("failed to process /proc/kallsyms\n");
return 2;
}
if (load_bpf_file(filename)) {
printf("%s", bpf_log_buf);
return 1;
}
for (i = 0; i < 5; i++) {
key = 0;
printf("kprobing funcs:");
while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0) {
bpf_lookup_elem(map_fd[0], &next_key, &value);
assert(next_key == value);
sym = ksym_search(value);
printf(" %s", sym->name);
key = next_key;
}
if (key)
printf("\n");
key = 0;
while (bpf_get_next_key(map_fd[0], &key, &next_key) == 0)
bpf_delete_elem(map_fd[0], &next_key);
sleep(1);
}
return 0;
}
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