Mike Frysinger | 50e31fa | 2018-01-19 18:59:49 -0500 | [diff] [blame] | 1 | /* Copyright 2016 The Chromium OS Authors. All rights reserved. |
| 2 | * Use of this source code is governed by a BSD-style license that can be |
| 3 | * found in the LICENSE file. |
Jorge Lucangeli Obes | 106d97f | 2016-08-19 12:34:02 -0400 | [diff] [blame] | 4 | */ |
| 5 | |
Jorge Lucangeli Obes | 713f6fb | 2016-10-03 13:03:25 -0400 | [diff] [blame] | 6 | #define USE_RET_KILL 0 |
| 7 | #define USE_RET_TRAP 1 |
| 8 | |
| 9 | #define NO_LOGGING 0 |
| 10 | #define USE_LOGGING 1 |
| 11 | |
Jorge Lucangeli Obes | 106d97f | 2016-08-19 12:34:02 -0400 | [diff] [blame] | 12 | /* BPF testing macros. */ |
| 13 | #define EXPECT_EQ_BLOCK(_block, _code, _k, _jt, _jf) \ |
| 14 | do { \ |
| 15 | EXPECT_EQ((_block)->code, _code); \ |
| 16 | EXPECT_EQ((_block)->k, (unsigned int)(_k)); \ |
| 17 | EXPECT_EQ((_block)->jt, _jt); \ |
| 18 | EXPECT_EQ((_block)->jf, _jf); \ |
| 19 | } while (0) |
| 20 | |
| 21 | #define EXPECT_EQ_STMT(_block, _code, _k) \ |
| 22 | EXPECT_EQ_BLOCK(_block, _code, _k, 0, 0) |
| 23 | |
| 24 | #define EXPECT_COMP(_block) \ |
| 25 | do { \ |
| 26 | EXPECT_EQ((_block)->len, BPF_ARG_COMP_LEN + 1); \ |
| 27 | EXPECT_EQ((_block)->instrs->code, BPF_LD+BPF_W+BPF_ABS); \ |
| 28 | } while (0) |
| 29 | |
| 30 | #define EXPECT_LBL(_block) \ |
| 31 | do { \ |
| 32 | EXPECT_TRUE((_block)->code == (BPF_JMP+BPF_JA)); \ |
| 33 | EXPECT_TRUE((_block)->jt == LABEL_JT); \ |
| 34 | EXPECT_TRUE((_block)->jf == LABEL_JF); \ |
| 35 | } while (0) |
| 36 | |
Jorge Lucangeli Obes | 45932a5 | 2017-03-15 17:02:58 -0400 | [diff] [blame] | 37 | #define EXPECT_ACTUAL_LBL(_block, _id) \ |
| 38 | do { \ |
| 39 | EXPECT_TRUE((_block)->code == (BPF_JMP+BPF_JA)); \ |
| 40 | EXPECT_TRUE((_block)->k == (_id)); \ |
| 41 | EXPECT_TRUE((_block)->jt == LABEL_JT); \ |
| 42 | EXPECT_TRUE((_block)->jf == LABEL_JF); \ |
| 43 | } while (0) |
| 44 | |
Jorge Lucangeli Obes | 106d97f | 2016-08-19 12:34:02 -0400 | [diff] [blame] | 45 | #define EXPECT_JUMP_LBL(_block) \ |
| 46 | do { \ |
| 47 | EXPECT_EQ((_block)->code, BPF_JMP+BPF_JA); \ |
| 48 | EXPECT_EQ((_block)->jt, JUMP_JT); \ |
| 49 | EXPECT_EQ((_block)->jf, JUMP_JF); \ |
| 50 | } while (0) |
| 51 | |
| 52 | #define EXPECT_GROUP_END(_block) \ |
| 53 | do { \ |
| 54 | EXPECT_EQ((_block)->len, 2U); \ |
| 55 | EXPECT_JUMP_LBL(&(_block)->instrs[0]); \ |
| 56 | EXPECT_LBL(&(_block)->instrs[1]); \ |
| 57 | } while (0) |
| 58 | |
| 59 | #define EXPECT_KILL(_block) \ |
| 60 | do { \ |
| 61 | EXPECT_EQ((_block)->len, 1U); \ |
| 62 | EXPECT_EQ_STMT((_block)->instrs, \ |
| 63 | BPF_RET+BPF_K, SECCOMP_RET_KILL); \ |
| 64 | } while (0) |
| 65 | |
| 66 | #define EXPECT_TRAP(_block) \ |
| 67 | do { \ |
| 68 | EXPECT_EQ((_block)->len, 1U); \ |
| 69 | EXPECT_EQ_STMT((_block)->instrs, \ |
| 70 | BPF_RET+BPF_K, SECCOMP_RET_TRAP); \ |
| 71 | } while (0) |
| 72 | |
| 73 | #define EXPECT_ALLOW(_block) \ |
| 74 | do { \ |
| 75 | EXPECT_EQ((_block)->len, 2U); \ |
| 76 | EXPECT_LBL(&(_block)->instrs[0]); \ |
| 77 | EXPECT_EQ_STMT(&(_block)->instrs[1], \ |
| 78 | BPF_RET+BPF_K, SECCOMP_RET_ALLOW); \ |
| 79 | } while (0) |
| 80 | |
| 81 | #define EXPECT_ARCH_VALIDATION(_filter) \ |
| 82 | do { \ |
| 83 | EXPECT_EQ_STMT(&(_filter)[0], BPF_LD+BPF_W+BPF_ABS, arch_nr); \ |
| 84 | EXPECT_EQ_BLOCK(&(_filter)[1], \ |
| 85 | BPF_JMP+BPF_JEQ+BPF_K, ARCH_NR, SKIP, NEXT); \ |
| 86 | EXPECT_EQ_STMT(&(_filter)[2], BPF_RET+BPF_K, SECCOMP_RET_KILL); \ |
| 87 | } while (0) |
| 88 | |
| 89 | #define EXPECT_ALLOW_SYSCALL(_filter, _nr) \ |
| 90 | do { \ |
| 91 | EXPECT_EQ_BLOCK(&(_filter)[0], \ |
| 92 | BPF_JMP+BPF_JEQ+BPF_K, (_nr), NEXT, SKIP); \ |
| 93 | EXPECT_EQ_STMT(&(_filter)[1], \ |
| 94 | BPF_RET+BPF_K, SECCOMP_RET_ALLOW); \ |
| 95 | } while (0) |
| 96 | |
| 97 | #define EXPECT_ALLOW_SYSCALL_ARGS(_filter, _nr, _id, _jt, _jf) \ |
| 98 | do { \ |
| 99 | EXPECT_EQ_BLOCK(&(_filter)[0], \ |
| 100 | BPF_JMP+BPF_JEQ+BPF_K, (_nr), NEXT, SKIP); \ |
| 101 | EXPECT_EQ_BLOCK(&(_filter)[1], \ |
| 102 | BPF_JMP+BPF_JA, (_id), (_jt), (_jf)); \ |
| 103 | } while (0) |