tools/testing/selftests/bpf/verifier/d_path.c

   1 {
   2         "d_path accept",
   3         .insns = {
   4         BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 0),
   5         BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
   6         BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
   7         BPF_MOV64_IMM(BPF_REG_6, 0),
   8         BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 0),
   9         BPF_LD_IMM64(BPF_REG_3, 8),
  10         BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_d_path),
  11         BPF_MOV64_IMM(BPF_REG_0, 0),
  12         BPF_EXIT_INSN(),
  13         },
  14         .result = ACCEPT,
  15         .prog_type = BPF_PROG_TYPE_TRACING,
  16         .expected_attach_type = BPF_TRACE_FENTRY,
  17         .kfunc = "dentry_open",
  18 },
  19 {
  20         "d_path reject",
  21         .insns = {
  22         BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 0),
  23         BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
  24         BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
  25         BPF_MOV64_IMM(BPF_REG_6, 0),
  26         BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 0),
  27         BPF_LD_IMM64(BPF_REG_3, 8),
  28         BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_d_path),
  29         BPF_MOV64_IMM(BPF_REG_0, 0),
  30         BPF_EXIT_INSN(),
  31         },
  32         .errstr = "helper call is not allowed in probe",
  33         .result = REJECT,
  34         .prog_type = BPF_PROG_TYPE_TRACING,
  35         .expected_attach_type = BPF_TRACE_FENTRY,
  36         .kfunc = "d_path",
  37 },