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Unified Diff: sandbox/linux/seccomp-bpf/linux_seccomp.h

Issue 935333002: Update from https://crrev.com/316786 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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Index: sandbox/linux/seccomp-bpf/linux_seccomp.h
diff --git a/sandbox/linux/seccomp-bpf/linux_seccomp.h b/sandbox/linux/seccomp-bpf/linux_seccomp.h
deleted file mode 100644
index c13ef20bb363027b20b681d79420532e86fc2db2..0000000000000000000000000000000000000000
--- a/sandbox/linux/seccomp-bpf/linux_seccomp.h
+++ /dev/null
@@ -1,423 +0,0 @@
-// Copyright (c) 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SANDBOX_LINUX_SECCOMP_BPF_LINUX_SECCOMP_H__
-#define SANDBOX_LINUX_SECCOMP_BPF_LINUX_SECCOMP_H__
-
-// The Seccomp2 kernel ABI is not part of older versions of glibc.
-// As we can't break compilation with these versions of the library,
-// we explicitly define all missing symbols.
-// If we ever decide that we can now rely on system headers, the following
-// include files should be enabled:
-// #include <linux/audit.h>
-// #include <linux/seccomp.h>
-
-#include <asm/unistd.h>
-#include <linux/filter.h>
-
-#include <sys/cdefs.h>
-// Old Bionic versions do not have sys/user.h. The if can be removed once we no
-// longer need to support these old Bionic versions.
-// All x86_64 builds use a new enough bionic to have sys/user.h.
-#if !defined(__BIONIC__) || defined(__x86_64__)
-#include <sys/types.h> // Fix for gcc 4.7, make sure __uint16_t is defined.
-#include <sys/user.h>
-#if defined(__mips__)
-// sys/user.h in eglibc misses size_t definition
-#include <stddef.h>
-#endif
-#endif
-
-// For audit.h
-#ifndef EM_ARM
-#define EM_ARM 40
-#endif
-#ifndef EM_386
-#define EM_386 3
-#endif
-#ifndef EM_X86_64
-#define EM_X86_64 62
-#endif
-#ifndef EM_MIPS
-#define EM_MIPS 8
-#endif
-#ifndef EM_AARCH64
-#define EM_AARCH64 183
-#endif
-
-#ifndef __AUDIT_ARCH_64BIT
-#define __AUDIT_ARCH_64BIT 0x80000000
-#endif
-#ifndef __AUDIT_ARCH_LE
-#define __AUDIT_ARCH_LE 0x40000000
-#endif
-#ifndef AUDIT_ARCH_ARM
-#define AUDIT_ARCH_ARM (EM_ARM|__AUDIT_ARCH_LE)
-#endif
-#ifndef AUDIT_ARCH_I386
-#define AUDIT_ARCH_I386 (EM_386|__AUDIT_ARCH_LE)
-#endif
-#ifndef AUDIT_ARCH_X86_64
-#define AUDIT_ARCH_X86_64 (EM_X86_64|__AUDIT_ARCH_64BIT|__AUDIT_ARCH_LE)
-#endif
-#ifndef AUDIT_ARCH_MIPSEL
-#define AUDIT_ARCH_MIPSEL (EM_MIPS|__AUDIT_ARCH_LE)
-#endif
-#ifndef AUDIT_ARCH_AARCH64
-#define AUDIT_ARCH_AARCH64 (EM_AARCH64 | __AUDIT_ARCH_64BIT | __AUDIT_ARCH_LE)
-#endif
-
-// For prctl.h
-#ifndef PR_SET_SECCOMP
-#define PR_SET_SECCOMP 22
-#define PR_GET_SECCOMP 21
-#endif
-#ifndef PR_SET_NO_NEW_PRIVS
-#define PR_SET_NO_NEW_PRIVS 38
-#define PR_GET_NO_NEW_PRIVS 39
-#endif
-#ifndef IPC_64
-#define IPC_64 0x0100
-#endif
-
-#ifndef BPF_MOD
-#define BPF_MOD 0x90
-#endif
-#ifndef BPF_XOR
-#define BPF_XOR 0xA0
-#endif
-
-// In order to build will older tool chains, we currently have to avoid
-// including <linux/seccomp.h>. Until that can be fixed (if ever). Rely on
-// our own definitions of the seccomp kernel ABI.
-#ifndef SECCOMP_MODE_FILTER
-#define SECCOMP_MODE_DISABLED 0
-#define SECCOMP_MODE_STRICT 1
-#define SECCOMP_MODE_FILTER 2 // User user-supplied filter
-#endif
-
-#ifndef SECCOMP_SET_MODE_STRICT
-#define SECCOMP_SET_MODE_STRICT 0
-#endif
-#ifndef SECCOMP_SET_MODE_FILTER
-#define SECCOMP_SET_MODE_FILTER 1
-#endif
-#ifndef SECCOMP_FILTER_FLAG_TSYNC
-#define SECCOMP_FILTER_FLAG_TSYNC 1
-#endif
-
-#ifndef SECCOMP_RET_KILL
-// Return values supported for BPF filter programs. Please note that the
-// "illegal" SECCOMP_RET_INVALID is not supported by the kernel, should only
-// ever be used internally, and would result in the kernel killing our process.
-#define SECCOMP_RET_KILL 0x00000000U // Kill the task immediately
-#define SECCOMP_RET_INVALID 0x00010000U // Illegal return value
-#define SECCOMP_RET_TRAP 0x00030000U // Disallow and force a SIGSYS
-#define SECCOMP_RET_ERRNO 0x00050000U // Returns an errno
-#define SECCOMP_RET_TRACE 0x7ff00000U // Pass to a tracer or disallow
-#define SECCOMP_RET_ALLOW 0x7fff0000U // Allow
-#define SECCOMP_RET_ACTION 0xffff0000U // Masks for the return value
-#define SECCOMP_RET_DATA 0x0000ffffU // sections
-#else
-#define SECCOMP_RET_INVALID 0x00010000U // Illegal return value
-#endif
-
-#ifndef SYS_SECCOMP
-#define SYS_SECCOMP 1
-#endif
-
-// Impose some reasonable maximum BPF program size. Realistically, the
-// kernel probably has much lower limits. But by limiting to less than
-// 30 bits, we can ease requirements on some of our data types.
-#define SECCOMP_MAX_PROGRAM_SIZE (1<<30)
-
-#if defined(__i386__)
-#define MIN_SYSCALL 0u
-#define MAX_PUBLIC_SYSCALL 1024u
-#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
-#define SECCOMP_ARCH AUDIT_ARCH_I386
-
-#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.gregs[(_reg)])
-#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, REG_EAX)
-#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, REG_EAX)
-#define SECCOMP_IP(_ctx) SECCOMP_REG(_ctx, REG_EIP)
-#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, REG_EBX)
-#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, REG_ECX)
-#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, REG_EDX)
-#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, REG_ESI)
-#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, REG_EDI)
-#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, REG_EBP)
-#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
-#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
-#define SECCOMP_IP_MSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 4)
-#define SECCOMP_IP_LSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 0)
-#define SECCOMP_ARG_MSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 4)
-#define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 0)
-
-
-#if defined(__BIONIC__)
-// Old Bionic versions don't have sys/user.h, so we just define regs_struct
-// directly. This can be removed once we no longer need to support these old
-// Bionic versions.
-struct regs_struct {
- long int ebx;
- long int ecx;
- long int edx;
- long int esi;
- long int edi;
- long int ebp;
- long int eax;
- long int xds;
- long int xes;
- long int xfs;
- long int xgs;
- long int orig_eax;
- long int eip;
- long int xcs;
- long int eflags;
- long int esp;
- long int xss;
-};
-#else
-typedef user_regs_struct regs_struct;
-#endif
-
-#define SECCOMP_PT_RESULT(_regs) (_regs).eax
-#define SECCOMP_PT_SYSCALL(_regs) (_regs).orig_eax
-#define SECCOMP_PT_IP(_regs) (_regs).eip
-#define SECCOMP_PT_PARM1(_regs) (_regs).ebx
-#define SECCOMP_PT_PARM2(_regs) (_regs).ecx
-#define SECCOMP_PT_PARM3(_regs) (_regs).edx
-#define SECCOMP_PT_PARM4(_regs) (_regs).esi
-#define SECCOMP_PT_PARM5(_regs) (_regs).edi
-#define SECCOMP_PT_PARM6(_regs) (_regs).ebp
-
-#elif defined(__x86_64__)
-#define MIN_SYSCALL 0u
-#define MAX_PUBLIC_SYSCALL 1024u
-#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
-#define SECCOMP_ARCH AUDIT_ARCH_X86_64
-
-#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.gregs[(_reg)])
-#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, REG_RAX)
-#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, REG_RAX)
-#define SECCOMP_IP(_ctx) SECCOMP_REG(_ctx, REG_RIP)
-#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, REG_RDI)
-#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, REG_RSI)
-#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, REG_RDX)
-#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, REG_R10)
-#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, REG_R8)
-#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, REG_R9)
-#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
-#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
-#define SECCOMP_IP_MSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 4)
-#define SECCOMP_IP_LSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 0)
-#define SECCOMP_ARG_MSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 4)
-#define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 0)
-
-typedef user_regs_struct regs_struct;
-#define SECCOMP_PT_RESULT(_regs) (_regs).rax
-#define SECCOMP_PT_SYSCALL(_regs) (_regs).orig_rax
-#define SECCOMP_PT_IP(_regs) (_regs).rip
-#define SECCOMP_PT_PARM1(_regs) (_regs).rdi
-#define SECCOMP_PT_PARM2(_regs) (_regs).rsi
-#define SECCOMP_PT_PARM3(_regs) (_regs).rdx
-#define SECCOMP_PT_PARM4(_regs) (_regs).r10
-#define SECCOMP_PT_PARM5(_regs) (_regs).r8
-#define SECCOMP_PT_PARM6(_regs) (_regs).r9
-
-#elif defined(__arm__) && (defined(__thumb__) || defined(__ARM_EABI__))
-// ARM EABI includes "ARM private" system calls starting at |__ARM_NR_BASE|,
-// and a "ghost syscall private to the kernel", cmpxchg,
-// at |__ARM_NR_BASE+0x00fff0|.
-// See </arch/arm/include/asm/unistd.h> in the Linux kernel.
-#define MIN_SYSCALL ((unsigned int)__NR_SYSCALL_BASE)
-#define MAX_PUBLIC_SYSCALL (MIN_SYSCALL + 1024u)
-#define MIN_PRIVATE_SYSCALL ((unsigned int)__ARM_NR_BASE)
-#define MAX_PRIVATE_SYSCALL (MIN_PRIVATE_SYSCALL + 16u)
-#define MIN_GHOST_SYSCALL ((unsigned int)__ARM_NR_BASE + 0xfff0u)
-#define MAX_SYSCALL (MIN_GHOST_SYSCALL + 4u)
-
-#define SECCOMP_ARCH AUDIT_ARCH_ARM
-
-// ARM sigcontext_t is different from i386/x86_64.
-// See </arch/arm/include/asm/sigcontext.h> in the Linux kernel.
-#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.arm_##_reg)
-// ARM EABI syscall convention.
-#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, r0)
-#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, r7)
-#define SECCOMP_IP(_ctx) SECCOMP_REG(_ctx, pc)
-#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, r0)
-#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, r1)
-#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, r2)
-#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, r3)
-#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, r4)
-#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, r5)
-#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
-#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
-#define SECCOMP_IP_MSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 4)
-#define SECCOMP_IP_LSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 0)
-#define SECCOMP_ARG_MSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 4)
-#define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 0)
-
-#if defined(__BIONIC__)
-// Old Bionic versions don't have sys/user.h, so we just define regs_struct
-// directly. This can be removed once we no longer need to support these old
-// Bionic versions.
-struct regs_struct {
- unsigned long uregs[18];
-};
-#else
-typedef user_regs regs_struct;
-#endif
-
-#define REG_cpsr uregs[16]
-#define REG_pc uregs[15]
-#define REG_lr uregs[14]
-#define REG_sp uregs[13]
-#define REG_ip uregs[12]
-#define REG_fp uregs[11]
-#define REG_r10 uregs[10]
-#define REG_r9 uregs[9]
-#define REG_r8 uregs[8]
-#define REG_r7 uregs[7]
-#define REG_r6 uregs[6]
-#define REG_r5 uregs[5]
-#define REG_r4 uregs[4]
-#define REG_r3 uregs[3]
-#define REG_r2 uregs[2]
-#define REG_r1 uregs[1]
-#define REG_r0 uregs[0]
-#define REG_ORIG_r0 uregs[17]
-
-#define SECCOMP_PT_RESULT(_regs) (_regs).REG_r0
-#define SECCOMP_PT_SYSCALL(_regs) (_regs).REG_r7
-#define SECCOMP_PT_IP(_regs) (_regs).REG_pc
-#define SECCOMP_PT_PARM1(_regs) (_regs).REG_r0
-#define SECCOMP_PT_PARM2(_regs) (_regs).REG_r1
-#define SECCOMP_PT_PARM3(_regs) (_regs).REG_r2
-#define SECCOMP_PT_PARM4(_regs) (_regs).REG_r3
-#define SECCOMP_PT_PARM5(_regs) (_regs).REG_r4
-#define SECCOMP_PT_PARM6(_regs) (_regs).REG_r5
-
-#elif defined(__mips__) && (_MIPS_SIM == _MIPS_SIM_ABI32)
-#define MIN_SYSCALL __NR_O32_Linux
-#define MAX_PUBLIC_SYSCALL (MIN_SYSCALL + __NR_Linux_syscalls)
-#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
-#define SECCOMP_ARCH AUDIT_ARCH_MIPSEL
-#define SYSCALL_EIGHT_ARGS
-// MIPS sigcontext_t is different from i386/x86_64 and ARM.
-// See </arch/mips/include/uapi/asm/sigcontext.h> in the Linux kernel.
-#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.gregs[_reg])
-// Based on MIPS o32 ABI syscall convention.
-// On MIPS, when indirect syscall is being made (syscall(__NR_foo)),
-// real identificator (__NR_foo) is not in v0, but in a0
-#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, 2)
-#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, 2)
-#define SECCOMP_IP(_ctx) (_ctx)->uc_mcontext.pc
-#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, 4)
-#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, 5)
-#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, 6)
-#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, 7)
-// Only the first 4 arguments of syscall are in registers.
-// The rest are on the stack.
-#define SECCOMP_STACKPARM(_ctx, n) (((long *)SECCOMP_REG(_ctx, 29))[(n)])
-#define SECCOMP_PARM5(_ctx) SECCOMP_STACKPARM(_ctx, 4)
-#define SECCOMP_PARM6(_ctx) SECCOMP_STACKPARM(_ctx, 5)
-#define SECCOMP_PARM7(_ctx) SECCOMP_STACKPARM(_ctx, 6)
-#define SECCOMP_PARM8(_ctx) SECCOMP_STACKPARM(_ctx, 7)
-#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
-#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
-#define SECCOMP_IP_MSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 4)
-#define SECCOMP_IP_LSB_IDX (offsetof(struct arch_seccomp_data, \
- instruction_pointer) + 0)
-#define SECCOMP_ARG_MSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 4)
-#define SECCOMP_ARG_LSB_IDX(nr) (offsetof(struct arch_seccomp_data, args) + \
- 8*(nr) + 0)
-
-// On Mips we don't have structures like user_regs or user_regs_struct in
-// sys/user.h that we could use, so we just define regs_struct directly.
-struct regs_struct {
- unsigned long long regs[32];
-};
-
-#define REG_a3 regs[7]
-#define REG_a2 regs[6]
-#define REG_a1 regs[5]
-#define REG_a0 regs[4]
-#define REG_v1 regs[3]
-#define REG_v0 regs[2]
-
-#define SECCOMP_PT_RESULT(_regs) (_regs).REG_v0
-#define SECCOMP_PT_SYSCALL(_regs) (_regs).REG_v0
-#define SECCOMP_PT_PARM1(_regs) (_regs).REG_a0
-#define SECCOMP_PT_PARM2(_regs) (_regs).REG_a1
-#define SECCOMP_PT_PARM3(_regs) (_regs).REG_a2
-#define SECCOMP_PT_PARM4(_regs) (_regs).REG_a3
-
-#elif defined(__aarch64__)
-struct regs_struct {
- unsigned long long regs[31];
- unsigned long long sp;
- unsigned long long pc;
- unsigned long long pstate;
-};
-
-#define MIN_SYSCALL 0u
-#define MAX_PUBLIC_SYSCALL 279u
-#define MAX_SYSCALL MAX_PUBLIC_SYSCALL
-#define SECCOMP_ARCH AUDIT_ARCH_AARCH64
-
-#define SECCOMP_REG(_ctx, _reg) ((_ctx)->uc_mcontext.regs[_reg])
-
-#define SECCOMP_RESULT(_ctx) SECCOMP_REG(_ctx, 0)
-#define SECCOMP_SYSCALL(_ctx) SECCOMP_REG(_ctx, 8)
-#define SECCOMP_IP(_ctx) (_ctx)->uc_mcontext.pc
-#define SECCOMP_PARM1(_ctx) SECCOMP_REG(_ctx, 0)
-#define SECCOMP_PARM2(_ctx) SECCOMP_REG(_ctx, 1)
-#define SECCOMP_PARM3(_ctx) SECCOMP_REG(_ctx, 2)
-#define SECCOMP_PARM4(_ctx) SECCOMP_REG(_ctx, 3)
-#define SECCOMP_PARM5(_ctx) SECCOMP_REG(_ctx, 4)
-#define SECCOMP_PARM6(_ctx) SECCOMP_REG(_ctx, 5)
-
-#define SECCOMP_NR_IDX (offsetof(struct arch_seccomp_data, nr))
-#define SECCOMP_ARCH_IDX (offsetof(struct arch_seccomp_data, arch))
-#define SECCOMP_IP_MSB_IDX \
- (offsetof(struct arch_seccomp_data, instruction_pointer) + 4)
-#define SECCOMP_IP_LSB_IDX \
- (offsetof(struct arch_seccomp_data, instruction_pointer) + 0)
-#define SECCOMP_ARG_MSB_IDX(nr) \
- (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 4)
-#define SECCOMP_ARG_LSB_IDX(nr) \
- (offsetof(struct arch_seccomp_data, args) + 8 * (nr) + 0)
-
-#define SECCOMP_PT_RESULT(_regs) (_regs).regs[0]
-#define SECCOMP_PT_SYSCALL(_regs) (_regs).regs[8]
-#define SECCOMP_PT_IP(_regs) (_regs).pc
-#define SECCOMP_PT_PARM1(_regs) (_regs).regs[0]
-#define SECCOMP_PT_PARM2(_regs) (_regs).regs[1]
-#define SECCOMP_PT_PARM3(_regs) (_regs).regs[2]
-#define SECCOMP_PT_PARM4(_regs) (_regs).regs[3]
-#define SECCOMP_PT_PARM5(_regs) (_regs).regs[4]
-#define SECCOMP_PT_PARM6(_regs) (_regs).regs[5]
-#else
-#error Unsupported target platform
-
-#endif
-
-#endif // SANDBOX_LINUX_SECCOMP_BPF_LINUX_SECCOMP_H__
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