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35 lines
1.7 KiB
C
35 lines
1.7 KiB
C
#ifndef COSMOPOLITAN_TOOL_NET_SANDBOX_H_
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#define COSMOPOLITAN_TOOL_NET_SANDBOX_H_
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#include "libc/calls/struct/bpf.h"
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#include "libc/calls/struct/filter.h"
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#include "libc/calls/struct/seccomp.h"
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#include "libc/sysv/consts/audit.h"
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// clang-format off
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#define _SECCOMP_MACHINE(MAGNUM) \
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BPF_STMT(BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, arch)), \
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BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 1, 0), \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL_PROCESS)
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#define _SECCOMP_LOAD_SYSCALL_NR() \
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BPF_STMT(BPF_LD | BPF_W | BPF_ABS, offsetof(struct seccomp_data, nr))
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#define _SECCOMP_ALLOW_SYSCALL(MAGNUM) \
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BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW)
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#define _SECCOMP_TRAP_SYSCALL(MAGNUM, DATA) \
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BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_TRAP | ((DATA) & SECCOMP_RET_DATA))
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#define _SECCOMP_TRACE_SYSCALL(MAGNUM, DATA) \
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BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, MAGNUM, 0, 1), \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_TRACE | ((DATA) & SECCOMP_RET_DATA))
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#define _SECCOMP_LOG_AND_RETURN_ERRNO(MAGNUM) \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ERRNO | ((MAGNUM) & SECCOMP_RET_DATA))
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#define _SECCOMP_LOG_AND_KILL_PROCESS() \
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BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ERRNO | SECCOMP_RET_KILL_PROCESS)
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#endif /* COSMOPOLITAN_TOOL_NET_SANDBOX_H_ */
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