obj_name.c (2000B)
1// SPDX-License-Identifier: GPL-2.0 2#include <test_progs.h> 3 4void test_obj_name(void) 5{ 6 struct { 7 const char *name; 8 int success; 9 int expected_errno; 10 } tests[] = { 11 { "", 1, 0 }, 12 { "_123456789ABCDE", 1, 0 }, 13 { "_123456789ABCDEF", 0, EINVAL }, 14 { "_123456789ABCD\n", 0, EINVAL }, 15 }; 16 struct bpf_insn prog[] = { 17 BPF_ALU64_IMM(BPF_MOV, BPF_REG_0, 0), 18 BPF_EXIT_INSN(), 19 }; 20 __u32 duration = 0; 21 int i; 22 23 for (i = 0; i < ARRAY_SIZE(tests); i++) { 24 size_t name_len = strlen(tests[i].name) + 1; 25 union bpf_attr attr; 26 size_t ncopy; 27 int fd; 28 29 /* test different attr.prog_name during BPF_PROG_LOAD */ 30 ncopy = name_len < sizeof(attr.prog_name) ? 31 name_len : sizeof(attr.prog_name); 32 bzero(&attr, sizeof(attr)); 33 attr.prog_type = BPF_PROG_TYPE_SCHED_CLS; 34 attr.insn_cnt = 2; 35 attr.insns = ptr_to_u64(prog); 36 attr.license = ptr_to_u64(""); 37 memcpy(attr.prog_name, tests[i].name, ncopy); 38 39 fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr)); 40 CHECK((tests[i].success && fd < 0) || 41 (!tests[i].success && fd >= 0) || 42 (!tests[i].success && errno != tests[i].expected_errno), 43 "check-bpf-prog-name", 44 "fd %d(%d) errno %d(%d)\n", 45 fd, tests[i].success, errno, tests[i].expected_errno); 46 47 if (fd >= 0) 48 close(fd); 49 50 /* test different attr.map_name during BPF_MAP_CREATE */ 51 ncopy = name_len < sizeof(attr.map_name) ? 52 name_len : sizeof(attr.map_name); 53 bzero(&attr, sizeof(attr)); 54 attr.map_type = BPF_MAP_TYPE_ARRAY; 55 attr.key_size = 4; 56 attr.value_size = 4; 57 attr.max_entries = 1; 58 attr.map_flags = 0; 59 memcpy(attr.map_name, tests[i].name, ncopy); 60 fd = syscall(__NR_bpf, BPF_MAP_CREATE, &attr, sizeof(attr)); 61 CHECK((tests[i].success && fd < 0) || 62 (!tests[i].success && fd >= 0) || 63 (!tests[i].success && errno != tests[i].expected_errno), 64 "check-bpf-map-name", 65 "fd %d(%d) errno %d(%d)\n", 66 fd, tests[i].success, errno, tests[i].expected_errno); 67 68 if (fd >= 0) 69 close(fd); 70 } 71}