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David Howells607ca462012-10-13 10:46:48 +01001#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
Kees Cook48dc92b2014-06-25 16:08:24 -070013/* Valid operations for seccomp syscall. */
14#define SECCOMP_SET_MODE_STRICT 0
15#define SECCOMP_SET_MODE_FILTER 1
16
Kees Cookc2e1f2e2014-06-05 00:23:17 -070017/* Valid flags for SECCOMP_SET_MODE_FILTER */
18#define SECCOMP_FILTER_FLAG_TSYNC 1
19
David Howells607ca462012-10-13 10:46:48 +010020/*
21 * All BPF programs must return a 32-bit value.
22 * The bottom 16-bits are for optional return data.
23 * The upper 16-bits are ordered from least permissive values to most.
24 *
25 * The ordering ensures that a min_t() over composed return values always
26 * selects the least permissive choice.
27 */
28#define SECCOMP_RET_KILL 0x00000000U /* kill the task immediately */
29#define SECCOMP_RET_TRAP 0x00030000U /* disallow and force a SIGSYS */
30#define SECCOMP_RET_ERRNO 0x00050000U /* returns an errno */
31#define SECCOMP_RET_TRACE 0x7ff00000U /* pass to a tracer or disallow */
32#define SECCOMP_RET_ALLOW 0x7fff0000U /* allow */
33
34/* Masks for the return value sections. */
35#define SECCOMP_RET_ACTION 0x7fff0000U
36#define SECCOMP_RET_DATA 0x0000ffffU
37
38/**
39 * struct seccomp_data - the format the BPF program executes over.
40 * @nr: the system call number
41 * @arch: indicates system call convention as an AUDIT_ARCH_* value
42 * as defined in <linux/audit.h>.
43 * @instruction_pointer: at the time of the system call.
44 * @args: up to 6 system call arguments always stored as 64-bit values
45 * regardless of the architecture.
46 */
47struct seccomp_data {
48 int nr;
49 __u32 arch;
50 __u64 instruction_pointer;
51 __u64 args[6];
52};
53
54#endif /* _UAPI_LINUX_SECCOMP_H */