/* Copyright 2016 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* BPF testing macros. */
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#define EXPECT_EQ_BLOCK(_block, _code, _k, _jt, _jf) \
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do { \
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EXPECT_EQ((_block)->code, _code); \
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EXPECT_EQ((_block)->k, (unsigned int)(_k)); \
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EXPECT_EQ((_block)->jt, _jt); \
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EXPECT_EQ((_block)->jf, _jf); \
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} while (0)
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#define EXPECT_EQ_STMT(_block, _code, _k) \
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EXPECT_EQ_BLOCK(_block, _code, _k, 0, 0)
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#define EXPECT_COMP(_block) \
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do { \
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EXPECT_EQ((_block)->len, BPF_ARG_COMP_LEN + 1); \
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EXPECT_EQ((_block)->instrs->code, BPF_LD+BPF_W+BPF_ABS); \
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} while (0)
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#define EXPECT_GT_GE_COMP(_block) \
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do { \
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EXPECT_EQ((_block)->len, BPF_ARG_GT_GE_COMP_LEN + 1); \
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EXPECT_EQ((_block)->instrs->code, BPF_LD+BPF_W+BPF_ABS); \
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} while (0)
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#define EXPECT_SHORT_GT_GE_COMP(_block) \
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do { \
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EXPECT_EQ((_block)->len, BPF_ARG_SHORT_GT_GE_COMP_LEN + 1); \
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EXPECT_EQ((_block)->instrs->code, BPF_LD+BPF_W+BPF_ABS); \
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} while (0)
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#define EXPECT_LBL(_block) \
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do { \
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EXPECT_TRUE((_block)->code == (BPF_JMP+BPF_JA)); \
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EXPECT_TRUE((_block)->jt == LABEL_JT); \
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EXPECT_TRUE((_block)->jf == LABEL_JF); \
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} while (0)
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#define EXPECT_ACTUAL_LBL(_block, _id) \
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do { \
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EXPECT_TRUE((_block)->code == (BPF_JMP+BPF_JA)); \
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EXPECT_TRUE((_block)->k == (_id)); \
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EXPECT_TRUE((_block)->jt == LABEL_JT); \
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EXPECT_TRUE((_block)->jf == LABEL_JF); \
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} while (0)
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#define EXPECT_JUMP_LBL(_block) \
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do { \
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EXPECT_EQ((_block)->code, BPF_JMP+BPF_JA); \
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EXPECT_EQ((_block)->jt, JUMP_JT); \
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EXPECT_EQ((_block)->jf, JUMP_JF); \
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} while (0)
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#define EXPECT_GROUP_END(_block) \
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do { \
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EXPECT_EQ((_block)->len, 2U); \
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EXPECT_JUMP_LBL(&(_block)->instrs[0]); \
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EXPECT_LBL(&(_block)->instrs[1]); \
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} while (0)
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#define EXPECT_KILL(_block) \
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do { \
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EXPECT_EQ((_block)->len, 1U); \
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EXPECT_EQ_STMT((_block)->instrs, \
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BPF_RET+BPF_K, SECCOMP_RET_KILL); \
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} while (0)
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#define EXPECT_TRAP(_block) \
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do { \
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EXPECT_EQ((_block)->len, 1U); \
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EXPECT_EQ_STMT((_block)->instrs, \
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BPF_RET+BPF_K, SECCOMP_RET_TRAP); \
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} while (0)
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#define EXPECT_ALLOW(_block) \
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do { \
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EXPECT_EQ((_block)->len, 2U); \
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EXPECT_LBL(&(_block)->instrs[0]); \
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EXPECT_EQ_STMT(&(_block)->instrs[1], \
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BPF_RET+BPF_K, SECCOMP_RET_ALLOW); \
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} while (0)
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#define EXPECT_ARCH_VALIDATION(_filter) \
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do { \
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EXPECT_EQ_STMT(&(_filter)[0], BPF_LD+BPF_W+BPF_ABS, arch_nr); \
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EXPECT_EQ_BLOCK(&(_filter)[1], \
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BPF_JMP+BPF_JEQ+BPF_K, ARCH_NR, SKIP, NEXT); \
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EXPECT_EQ_STMT(&(_filter)[2], BPF_RET+BPF_K, SECCOMP_RET_KILL); \
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} while (0)
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#define EXPECT_ALLOW_SYSCALL(_filter, _nr) \
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do { \
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EXPECT_EQ_BLOCK(&(_filter)[0], \
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BPF_JMP+BPF_JEQ+BPF_K, (_nr), NEXT, SKIP); \
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EXPECT_EQ_STMT(&(_filter)[1], \
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BPF_RET+BPF_K, SECCOMP_RET_ALLOW); \
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} while (0)
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#define EXPECT_ALLOW_SYSCALL_ARGS(_filter, _nr, _id, _jt, _jf) \
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do { \
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EXPECT_EQ_BLOCK(&(_filter)[0], \
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BPF_JMP+BPF_JEQ+BPF_K, (_nr), NEXT, SKIP); \
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EXPECT_EQ_BLOCK(&(_filter)[1], \
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BPF_JMP+BPF_JA, (_id), (_jt), (_jf)); \
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} while (0)
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