1#ifndef _UAPI_LINUX_SECCOMP_H 2#define _UAPI_LINUX_SECCOMP_H 3 4#include <linux/compiler.h> 5#include <linux/types.h> 6 7 8/* Valid values for seccomp.mode and prctl(PR_SET_SECCOMP, <mode>) */ 9#define SECCOMP_MODE_DISABLED 0 /* seccomp is not in use. */ 10#define SECCOMP_MODE_STRICT 1 /* uses hard-coded filter. */ 11#define SECCOMP_MODE_FILTER 2 /* uses user-supplied filter. */ 12 13/* Valid operations for seccomp syscall. */ 14#define SECCOMP_SET_MODE_STRICT 0 15#define SECCOMP_SET_MODE_FILTER 1 16#define SECCOMP_GET_ACTION_AVAIL 2 17 18/* Valid flags for SECCOMP_SET_MODE_FILTER */ 19#define SECCOMP_FILTER_FLAG_TSYNC (1UL << 0) 20#define SECCOMP_FILTER_FLAG_SPEC_ALLOW (1UL << 2) 21 22/* 23 * All BPF programs must return a 32-bit value. 24 * The bottom 16-bits are for optional return data. 25 * The upper 16-bits are ordered from least permissive values to most. 26 * 27 * The ordering ensures that a min_t() over composed return values always 28 * selects the least permissive choice. 29 */ 30#define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */ 31#define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */ 32#define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */ 33#define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */ 34#define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */ 35 36/* Masks for the return value sections. */ 37#define SECCOMP_RET_ACTION 0x7fff0000U 38#define SECCOMP_RET_DATA 0x0000ffffU 39 40/** 41 * struct seccomp_data - the format the BPF program executes over. 42 * @nr: the system call number 43 * @arch: indicates system call convention as an AUDIT_ARCH_* value 44 * as defined in <linux/audit.h>. 45 * @instruction_pointer: at the time of the system call. 46 * @args: up to 6 system call arguments always stored as 64-bit values 47 * regardless of the architecture. 48 */ 49struct seccomp_data { 50 int nr; 51 __u32 arch; 52 __u64 instruction_pointer; 53 __u64 args[6]; 54}; 55 56#endif /* _UAPI_LINUX_SECCOMP_H */ 57