Linux kernel mirror (for testing)
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linux
1#ifndef _LINUX_SECCOMP_H
2#define _LINUX_SECCOMP_H
3
4#include <uapi/linux/seccomp.h>
5
6#define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC)
7
8#ifdef CONFIG_SECCOMP
9
10#include <linux/thread_info.h>
11#include <asm/seccomp.h>
12
13struct seccomp_filter;
14/**
15 * struct seccomp - the state of a seccomp'ed process
16 *
17 * @mode: indicates one of the valid values above for controlled
18 * system calls available to a process.
19 * @filter: must always point to a valid seccomp-filter or NULL as it is
20 * accessed without locking during system call entry.
21 *
22 * @filter must only be accessed from the context of current as there
23 * is no read locking.
24 */
25struct seccomp {
26 int mode;
27 struct seccomp_filter *filter;
28};
29
30extern int __secure_computing(int);
31static inline int secure_computing(int this_syscall)
32{
33 if (unlikely(test_thread_flag(TIF_SECCOMP)))
34 return __secure_computing(this_syscall);
35 return 0;
36}
37
38/* A wrapper for architectures supporting only SECCOMP_MODE_STRICT. */
39static inline void secure_computing_strict(int this_syscall)
40{
41 BUG_ON(secure_computing(this_syscall) != 0);
42}
43
44extern long prctl_get_seccomp(void);
45extern long prctl_set_seccomp(unsigned long, char __user *);
46
47static inline int seccomp_mode(struct seccomp *s)
48{
49 return s->mode;
50}
51
52#else /* CONFIG_SECCOMP */
53
54#include <linux/errno.h>
55
56struct seccomp { };
57struct seccomp_filter { };
58
59static inline int secure_computing(int this_syscall) { return 0; }
60static inline void secure_computing_strict(int this_syscall) { return; }
61
62static inline long prctl_get_seccomp(void)
63{
64 return -EINVAL;
65}
66
67static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
68{
69 return -EINVAL;
70}
71
72static inline int seccomp_mode(struct seccomp *s)
73{
74 return 0;
75}
76#endif /* CONFIG_SECCOMP */
77
78#ifdef CONFIG_SECCOMP_FILTER
79extern void put_seccomp_filter(struct task_struct *tsk);
80extern void get_seccomp_filter(struct task_struct *tsk);
81#else /* CONFIG_SECCOMP_FILTER */
82static inline void put_seccomp_filter(struct task_struct *tsk)
83{
84 return;
85}
86static inline void get_seccomp_filter(struct task_struct *tsk)
87{
88 return;
89}
90#endif /* CONFIG_SECCOMP_FILTER */
91#endif /* _LINUX_SECCOMP_H */