seccomp.h revision 30692c65c4174412c90e79489e98ab85c1a7412f 
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/*
14 * All BPF programs must return a 32-bit value.
15 * The bottom 16-bits are for optional return data.
16 * The upper 16-bits are ordered from least permissive values to most.
17 *
18 * The ordering ensures that a min_t() over composed return values always
19 * selects the least permissive choice.
20 */
21#define SECCOMP_RET_KILL	0x00000000U /* kill the task immediately */
22#define SECCOMP_RET_TRAP	0x00030000U /* disallow and force a SIGSYS */
23#define SECCOMP_RET_ERRNO	0x00050000U /* returns an errno */
24#define SECCOMP_RET_TRACE	0x7ff00000U /* pass to a tracer or disallow */
25#define SECCOMP_RET_ALLOW	0x7fff0000U /* allow */
26
27/* Masks for the return value sections. */
28#define SECCOMP_RET_ACTION	0x7fff0000U
29#define SECCOMP_RET_DATA	0x0000ffffU
30
31/**
32 * struct seccomp_data - the format the BPF program executes over.
33 * @nr: the system call number
34 * @arch: indicates system call convention as an AUDIT_ARCH_* value
35 *        as defined in <linux/audit.h>.
36 * @instruction_pointer: at the time of the system call.
37 * @args: up to 6 system call arguments always stored as 64-bit values
38 *        regardless of the architecture.
39 */
40struct seccomp_data {
41	int nr;
42	__u32 arch;
43	__u64 instruction_pointer;
44	__u64 args[6];
45};
46
47#endif /* _UAPI_LINUX_SECCOMP_H */
48