346 lines
11 KiB
C
346 lines
11 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
#include <test_progs.h>
|
||
|
|
|
||
|
|
#define nr_iters 2
|
||
|
|
|
||
|
|
void serial_test_bpf_obj_id(void)
|
||
|
|
{
|
||
|
|
const __u64 array_magic_value = 0xfaceb00c;
|
||
|
|
const __u32 array_key = 0;
|
||
|
|
const char *file = "./test_obj_id.bpf.o";
|
||
|
|
const char *expected_prog_name = "test_obj_id";
|
||
|
|
const char *expected_map_name = "test_map_id";
|
||
|
|
const __u64 nsec_per_sec = 1000000000;
|
||
|
|
|
||
|
|
struct bpf_object *objs[nr_iters] = {};
|
||
|
|
struct bpf_link *links[nr_iters] = {};
|
||
|
|
struct bpf_program *prog;
|
||
|
|
int prog_fds[nr_iters], map_fds[nr_iters];
|
||
|
|
/* +1 to test for the info_len returned by kernel */
|
||
|
|
struct bpf_prog_info prog_infos[nr_iters + 1];
|
||
|
|
struct bpf_map_info map_infos[nr_iters + 1];
|
||
|
|
struct bpf_link_info link_infos[nr_iters + 1];
|
||
|
|
/* Each prog only uses one map. +1 to test nr_map_ids
|
||
|
|
* returned by kernel.
|
||
|
|
*/
|
||
|
|
__u32 map_ids[nr_iters + 1];
|
||
|
|
char jited_insns[128], xlated_insns[128], zeros[128], tp_name[128];
|
||
|
|
__u32 i, next_id, info_len, nr_id_found, duration = 0;
|
||
|
|
struct timespec real_time_ts, boot_time_ts;
|
||
|
|
int err = 0;
|
||
|
|
__u64 array_value;
|
||
|
|
uid_t my_uid = getuid();
|
||
|
|
time_t now, load_time;
|
||
|
|
|
||
|
|
err = bpf_prog_get_fd_by_id(0);
|
||
|
|
CHECK(err >= 0 || errno != ENOENT,
|
||
|
|
"get-fd-by-notexist-prog-id", "err %d errno %d\n", err, errno);
|
||
|
|
|
||
|
|
err = bpf_map_get_fd_by_id(0);
|
||
|
|
CHECK(err >= 0 || errno != ENOENT,
|
||
|
|
"get-fd-by-notexist-map-id", "err %d errno %d\n", err, errno);
|
||
|
|
|
||
|
|
err = bpf_link_get_fd_by_id(0);
|
||
|
|
CHECK(err >= 0 || errno != ENOENT,
|
||
|
|
"get-fd-by-notexist-link-id", "err %d errno %d\n", err, errno);
|
||
|
|
|
||
|
|
/* Check bpf_map_get_info_by_fd() */
|
||
|
|
bzero(zeros, sizeof(zeros));
|
||
|
|
for (i = 0; i < nr_iters; i++) {
|
||
|
|
now = time(NULL);
|
||
|
|
err = bpf_prog_test_load(file, BPF_PROG_TYPE_RAW_TRACEPOINT,
|
||
|
|
&objs[i], &prog_fds[i]);
|
||
|
|
/* test_obj_id.o is a dumb prog. It should never fail
|
||
|
|
* to load.
|
||
|
|
*/
|
||
|
|
if (CHECK_FAIL(err))
|
||
|
|
continue;
|
||
|
|
|
||
|
|
/* Insert a magic value to the map */
|
||
|
|
map_fds[i] = bpf_find_map(__func__, objs[i], "test_map_id");
|
||
|
|
if (CHECK_FAIL(map_fds[i] < 0))
|
||
|
|
goto done;
|
||
|
|
err = bpf_map_update_elem(map_fds[i], &array_key,
|
||
|
|
&array_magic_value, 0);
|
||
|
|
if (CHECK_FAIL(err))
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
prog = bpf_object__find_program_by_name(objs[i],
|
||
|
|
"test_obj_id");
|
||
|
|
if (CHECK_FAIL(!prog))
|
||
|
|
goto done;
|
||
|
|
links[i] = bpf_program__attach(prog);
|
||
|
|
err = libbpf_get_error(links[i]);
|
||
|
|
if (CHECK(err, "prog_attach", "prog #%d, err %d\n", i, err)) {
|
||
|
|
links[i] = NULL;
|
||
|
|
goto done;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check getting map info */
|
||
|
|
info_len = sizeof(struct bpf_map_info) * 2;
|
||
|
|
bzero(&map_infos[i], info_len);
|
||
|
|
err = bpf_map_get_info_by_fd(map_fds[i], &map_infos[i],
|
||
|
|
&info_len);
|
||
|
|
if (CHECK(err ||
|
||
|
|
map_infos[i].type != BPF_MAP_TYPE_ARRAY ||
|
||
|
|
map_infos[i].key_size != sizeof(__u32) ||
|
||
|
|
map_infos[i].value_size != sizeof(__u64) ||
|
||
|
|
map_infos[i].max_entries != 1 ||
|
||
|
|
map_infos[i].map_flags != 0 ||
|
||
|
|
info_len != sizeof(struct bpf_map_info) ||
|
||
|
|
strcmp((char *)map_infos[i].name, expected_map_name),
|
||
|
|
"get-map-info(fd)",
|
||
|
|
"err %d errno %d type %d(%d) info_len %u(%zu) key_size %u value_size %u max_entries %u map_flags %X name %s(%s)\n",
|
||
|
|
err, errno,
|
||
|
|
map_infos[i].type, BPF_MAP_TYPE_ARRAY,
|
||
|
|
info_len, sizeof(struct bpf_map_info),
|
||
|
|
map_infos[i].key_size,
|
||
|
|
map_infos[i].value_size,
|
||
|
|
map_infos[i].max_entries,
|
||
|
|
map_infos[i].map_flags,
|
||
|
|
map_infos[i].name, expected_map_name))
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
/* Check getting prog info */
|
||
|
|
info_len = sizeof(struct bpf_prog_info) * 2;
|
||
|
|
bzero(&prog_infos[i], info_len);
|
||
|
|
bzero(jited_insns, sizeof(jited_insns));
|
||
|
|
bzero(xlated_insns, sizeof(xlated_insns));
|
||
|
|
prog_infos[i].jited_prog_insns = ptr_to_u64(jited_insns);
|
||
|
|
prog_infos[i].jited_prog_len = sizeof(jited_insns);
|
||
|
|
prog_infos[i].xlated_prog_insns = ptr_to_u64(xlated_insns);
|
||
|
|
prog_infos[i].xlated_prog_len = sizeof(xlated_insns);
|
||
|
|
prog_infos[i].map_ids = ptr_to_u64(map_ids + i);
|
||
|
|
prog_infos[i].nr_map_ids = 2;
|
||
|
|
err = clock_gettime(CLOCK_REALTIME, &real_time_ts);
|
||
|
|
if (CHECK_FAIL(err))
|
||
|
|
goto done;
|
||
|
|
err = clock_gettime(CLOCK_BOOTTIME, &boot_time_ts);
|
||
|
|
if (CHECK_FAIL(err))
|
||
|
|
goto done;
|
||
|
|
err = bpf_prog_get_info_by_fd(prog_fds[i], &prog_infos[i],
|
||
|
|
&info_len);
|
||
|
|
load_time = (real_time_ts.tv_sec - boot_time_ts.tv_sec)
|
||
|
|
+ (prog_infos[i].load_time / nsec_per_sec);
|
||
|
|
if (CHECK(err ||
|
||
|
|
prog_infos[i].type != BPF_PROG_TYPE_RAW_TRACEPOINT ||
|
||
|
|
info_len != sizeof(struct bpf_prog_info) ||
|
||
|
|
(env.jit_enabled && !prog_infos[i].jited_prog_len) ||
|
||
|
|
(env.jit_enabled &&
|
||
|
|
!memcmp(jited_insns, zeros, sizeof(zeros))) ||
|
||
|
|
!prog_infos[i].xlated_prog_len ||
|
||
|
|
!memcmp(xlated_insns, zeros, sizeof(zeros)) ||
|
||
|
|
load_time < now - 60 || load_time > now + 60 ||
|
||
|
|
prog_infos[i].created_by_uid != my_uid ||
|
||
|
|
prog_infos[i].nr_map_ids != 1 ||
|
||
|
|
*(int *)(long)prog_infos[i].map_ids != map_infos[i].id ||
|
||
|
|
strcmp((char *)prog_infos[i].name, expected_prog_name),
|
||
|
|
"get-prog-info(fd)",
|
||
|
|
"err %d errno %d i %d type %d(%d) info_len %u(%zu) "
|
||
|
|
"jit_enabled %d jited_prog_len %u xlated_prog_len %u "
|
||
|
|
"jited_prog %d xlated_prog %d load_time %lu(%lu) "
|
||
|
|
"uid %u(%u) nr_map_ids %u(%u) map_id %u(%u) "
|
||
|
|
"name %s(%s)\n",
|
||
|
|
err, errno, i,
|
||
|
|
prog_infos[i].type, BPF_PROG_TYPE_SOCKET_FILTER,
|
||
|
|
info_len, sizeof(struct bpf_prog_info),
|
||
|
|
env.jit_enabled,
|
||
|
|
prog_infos[i].jited_prog_len,
|
||
|
|
prog_infos[i].xlated_prog_len,
|
||
|
|
!!memcmp(jited_insns, zeros, sizeof(zeros)),
|
||
|
|
!!memcmp(xlated_insns, zeros, sizeof(zeros)),
|
||
|
|
load_time, now,
|
||
|
|
prog_infos[i].created_by_uid, my_uid,
|
||
|
|
prog_infos[i].nr_map_ids, 1,
|
||
|
|
*(int *)(long)prog_infos[i].map_ids, map_infos[i].id,
|
||
|
|
prog_infos[i].name, expected_prog_name))
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
/* Check getting link info */
|
||
|
|
info_len = sizeof(struct bpf_link_info) * 2;
|
||
|
|
bzero(&link_infos[i], info_len);
|
||
|
|
link_infos[i].raw_tracepoint.tp_name = ptr_to_u64(&tp_name);
|
||
|
|
link_infos[i].raw_tracepoint.tp_name_len = sizeof(tp_name);
|
||
|
|
err = bpf_link_get_info_by_fd(bpf_link__fd(links[i]),
|
||
|
|
&link_infos[i], &info_len);
|
||
|
|
if (CHECK(err ||
|
||
|
|
link_infos[i].type != BPF_LINK_TYPE_RAW_TRACEPOINT ||
|
||
|
|
link_infos[i].prog_id != prog_infos[i].id ||
|
||
|
|
link_infos[i].raw_tracepoint.tp_name != ptr_to_u64(&tp_name) ||
|
||
|
|
strcmp(u64_to_ptr(link_infos[i].raw_tracepoint.tp_name),
|
||
|
|
"sys_enter") ||
|
||
|
|
info_len != sizeof(struct bpf_link_info),
|
||
|
|
"get-link-info(fd)",
|
||
|
|
"err %d errno %d info_len %u(%zu) type %d(%d) id %d "
|
||
|
|
"prog_id %d (%d) tp_name %s(%s)\n",
|
||
|
|
err, errno,
|
||
|
|
info_len, sizeof(struct bpf_link_info),
|
||
|
|
link_infos[i].type, BPF_LINK_TYPE_RAW_TRACEPOINT,
|
||
|
|
link_infos[i].id,
|
||
|
|
link_infos[i].prog_id, prog_infos[i].id,
|
||
|
|
(const char *)u64_to_ptr(link_infos[i].raw_tracepoint.tp_name),
|
||
|
|
"sys_enter"))
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Check bpf_prog_get_next_id() */
|
||
|
|
nr_id_found = 0;
|
||
|
|
next_id = 0;
|
||
|
|
while (!bpf_prog_get_next_id(next_id, &next_id)) {
|
||
|
|
struct bpf_prog_info prog_info = {};
|
||
|
|
__u32 saved_map_id;
|
||
|
|
int prog_fd;
|
||
|
|
|
||
|
|
info_len = sizeof(prog_info);
|
||
|
|
|
||
|
|
prog_fd = bpf_prog_get_fd_by_id(next_id);
|
||
|
|
if (prog_fd < 0 && errno == ENOENT)
|
||
|
|
/* The bpf_prog is in the dead row */
|
||
|
|
continue;
|
||
|
|
if (CHECK(prog_fd < 0, "get-prog-fd(next_id)",
|
||
|
|
"prog_fd %d next_id %d errno %d\n",
|
||
|
|
prog_fd, next_id, errno))
|
||
|
|
break;
|
||
|
|
|
||
|
|
for (i = 0; i < nr_iters; i++)
|
||
|
|
if (prog_infos[i].id == next_id)
|
||
|
|
break;
|
||
|
|
|
||
|
|
if (i == nr_iters)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
nr_id_found++;
|
||
|
|
|
||
|
|
/* Negative test:
|
||
|
|
* prog_info.nr_map_ids = 1
|
||
|
|
* prog_info.map_ids = NULL
|
||
|
|
*/
|
||
|
|
prog_info.nr_map_ids = 1;
|
||
|
|
err = bpf_prog_get_info_by_fd(prog_fd, &prog_info, &info_len);
|
||
|
|
if (CHECK(!err || errno != EFAULT,
|
||
|
|
"get-prog-fd-bad-nr-map-ids", "err %d errno %d(%d)",
|
||
|
|
err, errno, EFAULT))
|
||
|
|
break;
|
||
|
|
bzero(&prog_info, sizeof(prog_info));
|
||
|
|
info_len = sizeof(prog_info);
|
||
|
|
|
||
|
|
saved_map_id = *(int *)((long)prog_infos[i].map_ids);
|
||
|
|
prog_info.map_ids = prog_infos[i].map_ids;
|
||
|
|
prog_info.nr_map_ids = 2;
|
||
|
|
err = bpf_prog_get_info_by_fd(prog_fd, &prog_info, &info_len);
|
||
|
|
prog_infos[i].jited_prog_insns = 0;
|
||
|
|
prog_infos[i].xlated_prog_insns = 0;
|
||
|
|
CHECK(err || info_len != sizeof(struct bpf_prog_info) ||
|
||
|
|
memcmp(&prog_info, &prog_infos[i], info_len) ||
|
||
|
|
*(int *)(long)prog_info.map_ids != saved_map_id,
|
||
|
|
"get-prog-info(next_id->fd)",
|
||
|
|
"err %d errno %d info_len %u(%zu) memcmp %d map_id %u(%u)\n",
|
||
|
|
err, errno, info_len, sizeof(struct bpf_prog_info),
|
||
|
|
memcmp(&prog_info, &prog_infos[i], info_len),
|
||
|
|
*(int *)(long)prog_info.map_ids, saved_map_id);
|
||
|
|
close(prog_fd);
|
||
|
|
}
|
||
|
|
CHECK(nr_id_found != nr_iters,
|
||
|
|
"check total prog id found by get_next_id",
|
||
|
|
"nr_id_found %u(%u)\n",
|
||
|
|
nr_id_found, nr_iters);
|
||
|
|
|
||
|
|
/* Check bpf_map_get_next_id() */
|
||
|
|
nr_id_found = 0;
|
||
|
|
next_id = 0;
|
||
|
|
while (!bpf_map_get_next_id(next_id, &next_id)) {
|
||
|
|
struct bpf_map_info map_info = {};
|
||
|
|
int map_fd;
|
||
|
|
|
||
|
|
info_len = sizeof(map_info);
|
||
|
|
|
||
|
|
map_fd = bpf_map_get_fd_by_id(next_id);
|
||
|
|
if (map_fd < 0 && errno == ENOENT)
|
||
|
|
/* The bpf_map is in the dead row */
|
||
|
|
continue;
|
||
|
|
if (CHECK(map_fd < 0, "get-map-fd(next_id)",
|
||
|
|
"map_fd %d next_id %u errno %d\n",
|
||
|
|
map_fd, next_id, errno))
|
||
|
|
break;
|
||
|
|
|
||
|
|
for (i = 0; i < nr_iters; i++)
|
||
|
|
if (map_infos[i].id == next_id)
|
||
|
|
break;
|
||
|
|
|
||
|
|
if (i == nr_iters)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
nr_id_found++;
|
||
|
|
|
||
|
|
err = bpf_map_lookup_elem(map_fd, &array_key, &array_value);
|
||
|
|
if (CHECK_FAIL(err))
|
||
|
|
goto done;
|
||
|
|
|
||
|
|
err = bpf_map_get_info_by_fd(map_fd, &map_info, &info_len);
|
||
|
|
CHECK(err || info_len != sizeof(struct bpf_map_info) ||
|
||
|
|
memcmp(&map_info, &map_infos[i], info_len) ||
|
||
|
|
array_value != array_magic_value,
|
||
|
|
"check get-map-info(next_id->fd)",
|
||
|
|
"err %d errno %d info_len %u(%zu) memcmp %d array_value %llu(%llu)\n",
|
||
|
|
err, errno, info_len, sizeof(struct bpf_map_info),
|
||
|
|
memcmp(&map_info, &map_infos[i], info_len),
|
||
|
|
array_value, array_magic_value);
|
||
|
|
|
||
|
|
close(map_fd);
|
||
|
|
}
|
||
|
|
CHECK(nr_id_found != nr_iters,
|
||
|
|
"check total map id found by get_next_id",
|
||
|
|
"nr_id_found %u(%u)\n",
|
||
|
|
nr_id_found, nr_iters);
|
||
|
|
|
||
|
|
/* Check bpf_link_get_next_id() */
|
||
|
|
nr_id_found = 0;
|
||
|
|
next_id = 0;
|
||
|
|
while (!bpf_link_get_next_id(next_id, &next_id)) {
|
||
|
|
struct bpf_link_info link_info;
|
||
|
|
int link_fd, cmp_res;
|
||
|
|
|
||
|
|
info_len = sizeof(link_info);
|
||
|
|
memset(&link_info, 0, info_len);
|
||
|
|
|
||
|
|
link_fd = bpf_link_get_fd_by_id(next_id);
|
||
|
|
if (link_fd < 0 && errno == ENOENT)
|
||
|
|
/* The bpf_link is in the dead row */
|
||
|
|
continue;
|
||
|
|
if (CHECK(link_fd < 0, "get-link-fd(next_id)",
|
||
|
|
"link_fd %d next_id %u errno %d\n",
|
||
|
|
link_fd, next_id, errno))
|
||
|
|
break;
|
||
|
|
|
||
|
|
for (i = 0; i < nr_iters; i++)
|
||
|
|
if (link_infos[i].id == next_id)
|
||
|
|
break;
|
||
|
|
|
||
|
|
if (i == nr_iters)
|
||
|
|
continue;
|
||
|
|
|
||
|
|
nr_id_found++;
|
||
|
|
|
||
|
|
err = bpf_link_get_info_by_fd(link_fd, &link_info, &info_len);
|
||
|
|
cmp_res = memcmp(&link_info, &link_infos[i],
|
||
|
|
offsetof(struct bpf_link_info, raw_tracepoint));
|
||
|
|
CHECK(err || info_len != sizeof(link_info) || cmp_res,
|
||
|
|
"check get-link-info(next_id->fd)",
|
||
|
|
"err %d errno %d info_len %u(%zu) memcmp %d\n",
|
||
|
|
err, errno, info_len, sizeof(struct bpf_link_info),
|
||
|
|
cmp_res);
|
||
|
|
|
||
|
|
close(link_fd);
|
||
|
|
}
|
||
|
|
CHECK(nr_id_found != nr_iters,
|
||
|
|
"check total link id found by get_next_id",
|
||
|
|
"nr_id_found %u(%u)\n", nr_id_found, nr_iters);
|
||
|
|
|
||
|
|
done:
|
||
|
|
for (i = 0; i < nr_iters; i++) {
|
||
|
|
bpf_link__destroy(links[i]);
|
||
|
|
bpf_object__close(objs[i]);
|
||
|
|
}
|
||
|
|
}
|