From c0467cf387548dc98c0254f63553d862b35a84e5 Mon Sep 17 00:00:00 2001 From: Ronny Chevalier Date: Wed, 12 Feb 2014 01:29:54 +0100 Subject: syscallfilter: port to libseccomp --- src/shared/linux/seccomp-bpf.h | 76 ------------------------------------------ src/shared/linux/seccomp.h | 47 -------------------------- 2 files changed, 123 deletions(-) delete mode 100644 src/shared/linux/seccomp-bpf.h delete mode 100644 src/shared/linux/seccomp.h (limited to 'src/shared/linux') diff --git a/src/shared/linux/seccomp-bpf.h b/src/shared/linux/seccomp-bpf.h deleted file mode 100644 index 1e3d136739..0000000000 --- a/src/shared/linux/seccomp-bpf.h +++ /dev/null @@ -1,76 +0,0 @@ -/* - * seccomp example for x86 (32-bit and 64-bit) with BPF macros - * - * Copyright (c) 2012 The Chromium OS Authors - * Authors: - * Will Drewry - * Kees Cook - * - * The code may be used by anyone for any purpose, and can serve as a - * starting point for developing applications using mode 2 seccomp. - */ -#ifndef _SECCOMP_BPF_H_ -#define _SECCOMP_BPF_H_ - -#include -#include -#include -#include -#include -#include -#include - -#include - -#include -#include -#include -#include - -#ifndef SECCOMP_MODE_FILTER -# define SECCOMP_MODE_FILTER 2 /* uses user-supplied filter. */ -# define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */ -# define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */ -# define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */ -struct seccomp_data { - int nr; - __u32 arch; - __u64 instruction_pointer; - __u64 args[6]; -}; -#endif -#ifndef SYS_SECCOMP -# define SYS_SECCOMP 1 -#endif - -#define syscall_nr (offsetof(struct seccomp_data, nr)) -#define arch_nr (offsetof(struct seccomp_data, arch)) - -#if defined(__i386__) -# define REG_SYSCALL REG_EAX -# define ARCH_NR AUDIT_ARCH_I386 -#elif defined(__x86_64__) -# define REG_SYSCALL REG_RAX -# define ARCH_NR AUDIT_ARCH_X86_64 -#else -# warning "Platform does not support seccomp filter yet" -# define REG_SYSCALL 0 -# define ARCH_NR 0 -#endif - -#define VALIDATE_ARCHITECTURE \ - BPF_STMT(BPF_LD+BPF_W+BPF_ABS, arch_nr), \ - BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, ARCH_NR, 1, 0), \ - BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_KILL) - -#define EXAMINE_SYSCALL \ - BPF_STMT(BPF_LD+BPF_W+BPF_ABS, syscall_nr) - -#define ALLOW_SYSCALL(name) \ - BPF_JUMP(BPF_JMP+BPF_JEQ+BPF_K, __NR_##name, 0, 1), \ - BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_ALLOW) - -#define _KILL_PROCESS \ - BPF_STMT(BPF_RET+BPF_K, SECCOMP_RET_KILL) - -#endif /* _SECCOMP_BPF_H_ */ diff --git a/src/shared/linux/seccomp.h b/src/shared/linux/seccomp.h deleted file mode 100644 index 9c03683fa0..0000000000 --- a/src/shared/linux/seccomp.h +++ /dev/null @@ -1,47 +0,0 @@ -#ifndef _LINUX_SECCOMP_H -#define _LINUX_SECCOMP_H - - -#include - - -/* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, ) */ -#define SECCOMP_MODE_DISABLED 0 /* seccomp is not in use. */ -#define SECCOMP_MODE_STRICT 1 /* uses hard-coded filter. */ -#define SECCOMP_MODE_FILTER 2 /* uses user-supplied filter. */ - -/* - * All BPF programs must return a 32-bit value. - * The bottom 16-bits are for optional return data. - * The upper 16-bits are ordered from least permissive values to most. - * - * The ordering ensures that a min_t() over composed return values always - * selects the least permissive choice. - */ -#define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */ -#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 */ - -/* Masks for the return value sections. */ -#define SECCOMP_RET_ACTION 0x7fff0000U -#define SECCOMP_RET_DATA 0x0000ffffU - -/** - * struct seccomp_data - the format the BPF program executes over. - * @nr: the system call number - * @arch: indicates system call convention as an AUDIT_ARCH_* value - * as defined in . - * @instruction_pointer: at the time of the system call. - * @args: up to 6 system call arguments always stored as 64-bit values - * regardless of the architecture. - */ -struct seccomp_data { - int nr; - __u32 arch; - __u64 instruction_pointer; - __u64 args[6]; -}; - -#endif /* _LINUX_SECCOMP_H */ -- cgit v1.2.3-54-g00ecf