xref: /OK3568_Linux_fs/kernel/tools/testing/selftests/bpf/verifier/d_path.c (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun {
2*4882a593Smuzhiyun 	"d_path accept",
3*4882a593Smuzhiyun 	.insns = {
4*4882a593Smuzhiyun 	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 0),
5*4882a593Smuzhiyun 	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
6*4882a593Smuzhiyun 	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
7*4882a593Smuzhiyun 	BPF_MOV64_IMM(BPF_REG_6, 0),
8*4882a593Smuzhiyun 	BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 0),
9*4882a593Smuzhiyun 	BPF_LD_IMM64(BPF_REG_3, 8),
10*4882a593Smuzhiyun 	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_d_path),
11*4882a593Smuzhiyun 	BPF_MOV64_IMM(BPF_REG_0, 0),
12*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
13*4882a593Smuzhiyun 	},
14*4882a593Smuzhiyun 	.result = ACCEPT,
15*4882a593Smuzhiyun 	.prog_type = BPF_PROG_TYPE_TRACING,
16*4882a593Smuzhiyun 	.expected_attach_type = BPF_TRACE_FENTRY,
17*4882a593Smuzhiyun 	.kfunc = "dentry_open",
18*4882a593Smuzhiyun },
19*4882a593Smuzhiyun {
20*4882a593Smuzhiyun 	"d_path reject",
21*4882a593Smuzhiyun 	.insns = {
22*4882a593Smuzhiyun 	BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_1, 0),
23*4882a593Smuzhiyun 	BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
24*4882a593Smuzhiyun 	BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
25*4882a593Smuzhiyun 	BPF_MOV64_IMM(BPF_REG_6, 0),
26*4882a593Smuzhiyun 	BPF_STX_MEM(BPF_DW, BPF_REG_2, BPF_REG_6, 0),
27*4882a593Smuzhiyun 	BPF_LD_IMM64(BPF_REG_3, 8),
28*4882a593Smuzhiyun 	BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_d_path),
29*4882a593Smuzhiyun 	BPF_MOV64_IMM(BPF_REG_0, 0),
30*4882a593Smuzhiyun 	BPF_EXIT_INSN(),
31*4882a593Smuzhiyun 	},
32*4882a593Smuzhiyun 	.errstr = "helper call is not allowed in probe",
33*4882a593Smuzhiyun 	.result = REJECT,
34*4882a593Smuzhiyun 	.prog_type = BPF_PROG_TYPE_TRACING,
35*4882a593Smuzhiyun 	.expected_attach_type = BPF_TRACE_FENTRY,
36*4882a593Smuzhiyun 	.kfunc = "d_path",
37*4882a593Smuzhiyun },
38