#include <sys/stat.h>
#include <linux/perf_event.h>
+#include <bpf/bpf.h>
#include <bpf/libbpf.h>
-#include "bpf_load.h"
#include "bpf_util.h"
#include "perf-sys.h"
#include "trace_helpers.h"
+static struct bpf_program *progs[2];
+static struct bpf_link *links[2];
+
#define CHECK_PERROR_RET(condition) ({ \
int __ret = !!(condition); \
if (__ret) { \
return ret;
}
-static int test_debug_fs_kprobe(int prog_fd_idx, const char *fn_name,
+static int test_debug_fs_kprobe(int link_idx, const char *fn_name,
__u32 expected_fd_type)
{
__u64 probe_offset, probe_addr;
__u32 len, prog_id, fd_type;
+ int err, event_fd;
char buf[256];
- int err;
len = sizeof(buf);
- err = bpf_task_fd_query(getpid(), event_fd[prog_fd_idx], 0, buf, &len,
+ event_fd = bpf_link__fd(links[link_idx]);
+ err = bpf_task_fd_query(getpid(), event_fd, 0, buf, &len,
&prog_id, &fd_type, &probe_offset,
&probe_addr);
if (err < 0) {
printf("FAIL: %s, for event_fd idx %d, fn_name %s\n",
- __func__, prog_fd_idx, fn_name);
+ __func__, link_idx, fn_name);
perror(" :");
return -1;
}
fd_type != expected_fd_type ||
probe_offset != 0x0 || probe_addr != 0x0) {
printf("FAIL: bpf_trace_event_query(event_fd[%d]):\n",
- prog_fd_idx);
+ link_idx);
printf("buf: %s, fd_type: %u, probe_offset: 0x%llx,"
" probe_addr: 0x%llx\n",
buf, fd_type, probe_offset, probe_addr);
int is_return_bit = bpf_get_retprobe_bit(event_type);
int type = bpf_find_probe_type(event_type);
struct perf_event_attr attr = {};
- int fd;
+ struct bpf_link *link;
+ int fd, err = -1;
if (type < 0 || is_return_bit < 0) {
printf("FAIL: %s incorrect type (%d) or is_return_bit (%d)\n",
__func__, type, is_return_bit);
- return -1;
+ return err;
}
attr.sample_period = 1;
attr.type = type;
fd = sys_perf_event_open(&attr, -1, 0, -1, 0);
- CHECK_PERROR_RET(fd < 0);
+ link = bpf_program__attach_perf_event(progs[0], fd);
+ if (libbpf_get_error(link)) {
+ printf("ERROR: bpf_program__attach_perf_event failed\n");
+ link = NULL;
+ close(fd);
+ goto cleanup;
+ }
- CHECK_PERROR_RET(ioctl(fd, PERF_EVENT_IOC_ENABLE, 0) < 0);
- CHECK_PERROR_RET(ioctl(fd, PERF_EVENT_IOC_SET_BPF, prog_fd[0]) < 0);
CHECK_PERROR_RET(bpf_task_fd_query(getpid(), fd, 0, buf, buf_len,
prog_id, fd_type, probe_offset, probe_addr) < 0);
+ err = 0;
- return 0;
+cleanup:
+ bpf_link__destroy(link);
+ return err;
}
static int test_nondebug_fs_probe(const char *event_type, const char *name,
static int test_debug_fs_uprobe(char *binary_path, long offset, bool is_return)
{
+ char buf[256], event_alias[sizeof("test_1234567890")];
const char *event_type = "uprobe";
struct perf_event_attr attr = {};
- char buf[256], event_alias[sizeof("test_1234567890")];
__u64 probe_offset, probe_addr;
__u32 len, prog_id, fd_type;
- int err, res, kfd, efd;
+ int err = -1, res, kfd, efd;
+ struct bpf_link *link;
ssize_t bytes;
snprintf(buf, sizeof(buf), "/sys/kernel/debug/tracing/%s_events",
event_type);
- kfd = open(buf, O_WRONLY | O_APPEND, 0);
+ kfd = open(buf, O_WRONLY | O_TRUNC, 0);
CHECK_PERROR_RET(kfd < 0);
res = snprintf(event_alias, sizeof(event_alias), "test_%d", getpid());
attr.type = PERF_TYPE_TRACEPOINT;
attr.sample_period = 1;
attr.wakeup_events = 1;
+
kfd = sys_perf_event_open(&attr, -1, 0, -1, PERF_FLAG_FD_CLOEXEC);
- CHECK_PERROR_RET(kfd < 0);
- CHECK_PERROR_RET(ioctl(kfd, PERF_EVENT_IOC_SET_BPF, prog_fd[0]) < 0);
- CHECK_PERROR_RET(ioctl(kfd, PERF_EVENT_IOC_ENABLE, 0) < 0);
+ link = bpf_program__attach_perf_event(progs[0], kfd);
+ if (libbpf_get_error(link)) {
+ printf("ERROR: bpf_program__attach_perf_event failed\n");
+ link = NULL;
+ close(kfd);
+ goto cleanup;
+ }
len = sizeof(buf);
err = bpf_task_fd_query(getpid(), kfd, 0, buf, &len,
probe_offset);
return -1;
}
+ err = 0;
- close(kfd);
- return 0;
+cleanup:
+ bpf_link__destroy(link);
+ return err;
}
int main(int argc, char **argv)
{
- struct rlimit r = {RLIM_INFINITY, RLIM_INFINITY};
extern char __executable_start;
char filename[256], buf[256];
__u64 uprobe_file_offset;
+ struct bpf_program *prog;
+ struct bpf_object *obj;
+ int i = 0, err = -1;
+
+ if (load_kallsyms()) {
+ printf("failed to process /proc/kallsyms\n");
+ return err;
+ }
snprintf(filename, sizeof(filename), "%s_kern.o", argv[0]);
- if (setrlimit(RLIMIT_MEMLOCK, &r)) {
- perror("setrlimit(RLIMIT_MEMLOCK)");
- return 1;
+ obj = bpf_object__open_file(filename, NULL);
+ if (libbpf_get_error(obj)) {
+ fprintf(stderr, "ERROR: opening BPF object file failed\n");
+ return err;
}
- if (load_kallsyms()) {
- printf("failed to process /proc/kallsyms\n");
- return 1;
+ /* load BPF program */
+ if (bpf_object__load(obj)) {
+ fprintf(stderr, "ERROR: loading BPF object file failed\n");
+ goto cleanup;
}
- if (load_bpf_file(filename)) {
- printf("%s", bpf_log_buf);
- return 1;
+ bpf_object__for_each_program(prog, obj) {
+ progs[i] = prog;
+ links[i] = bpf_program__attach(progs[i]);
+ if (libbpf_get_error(links[i])) {
+ fprintf(stderr, "ERROR: bpf_program__attach failed\n");
+ links[i] = NULL;
+ goto cleanup;
+ }
+ i++;
}
/* test two functions in the corresponding *_kern.c file */
false));
CHECK_AND_RET(test_debug_fs_uprobe((char *)argv[0], uprobe_file_offset,
true));
+ err = 0;
- return 0;
+cleanup:
+ for (i--; i >= 0; i--)
+ bpf_link__destroy(links[i]);
+
+ bpf_object__close(obj);
+ return err;
}
projects / linux-2.6-microblaze.git / blobdiff