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1da177e4 LT |
1 | #ifndef _LINUX_SECCOMP_H |
2 | #define _LINUX_SECCOMP_H | |
3 | ||
607ca46e | 4 | #include <uapi/linux/seccomp.h> |
e2cfabdf | 5 | |
c2e1f2e3 KC |
6 | #define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC) |
7 | ||
1da177e4 LT |
8 | #ifdef CONFIG_SECCOMP |
9 | ||
1da177e4 LT |
10 | #include <linux/thread_info.h> |
11 | #include <asm/seccomp.h> | |
12 | ||
e2cfabdf WD |
13 | struct 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. | |
dbd95212 KC |
19 | * @filter: must always point to a valid seccomp-filter or NULL as it is |
20 | * accessed without locking during system call entry. | |
e2cfabdf WD |
21 | * |
22 | * @filter must only be accessed from the context of current as there | |
dbd95212 | 23 | * is no read locking. |
e2cfabdf | 24 | */ |
932ecebb WD |
25 | struct seccomp { |
26 | int mode; | |
e2cfabdf | 27 | struct seccomp_filter *filter; |
932ecebb | 28 | }; |
1da177e4 | 29 | |
a4412fc9 | 30 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
2f275de5 AL |
31 | extern int __secure_computing(const struct seccomp_data *sd); |
32 | static inline int secure_computing(const struct seccomp_data *sd) | |
1da177e4 LT |
33 | { |
34 | if (unlikely(test_thread_flag(TIF_SECCOMP))) | |
2f275de5 | 35 | return __secure_computing(sd); |
acf3b2c7 | 36 | return 0; |
1da177e4 | 37 | } |
a4412fc9 AL |
38 | #else |
39 | extern void secure_computing_strict(int this_syscall); | |
40 | #endif | |
e4da89d0 | 41 | |
1d9d02fe | 42 | extern long prctl_get_seccomp(void); |
e2cfabdf | 43 | extern long prctl_set_seccomp(unsigned long, char __user *); |
1d9d02fe | 44 | |
932ecebb | 45 | static inline int seccomp_mode(struct seccomp *s) |
5cec93c2 AL |
46 | { |
47 | return s->mode; | |
48 | } | |
49 | ||
1da177e4 LT |
50 | #else /* CONFIG_SECCOMP */ |
51 | ||
42a17ad2 RB |
52 | #include <linux/errno.h> |
53 | ||
932ecebb | 54 | struct seccomp { }; |
e2cfabdf | 55 | struct seccomp_filter { }; |
1da177e4 | 56 | |
a4412fc9 | 57 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
2f275de5 | 58 | static inline int secure_computing(struct seccomp_data *sd) { return 0; } |
a4412fc9 | 59 | #else |
e4da89d0 | 60 | static inline void secure_computing_strict(int this_syscall) { return; } |
a4412fc9 | 61 | #endif |
1da177e4 | 62 | |
1d9d02fe AA |
63 | static inline long prctl_get_seccomp(void) |
64 | { | |
65 | return -EINVAL; | |
66 | } | |
67 | ||
e2cfabdf | 68 | static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3) |
1d9d02fe AA |
69 | { |
70 | return -EINVAL; | |
71 | } | |
72 | ||
932ecebb | 73 | static inline int seccomp_mode(struct seccomp *s) |
5cec93c2 | 74 | { |
221272f9 | 75 | return SECCOMP_MODE_DISABLED; |
5cec93c2 | 76 | } |
1da177e4 LT |
77 | #endif /* CONFIG_SECCOMP */ |
78 | ||
e2cfabdf WD |
79 | #ifdef CONFIG_SECCOMP_FILTER |
80 | extern void put_seccomp_filter(struct task_struct *tsk); | |
81 | extern void get_seccomp_filter(struct task_struct *tsk); | |
e2cfabdf WD |
82 | #else /* CONFIG_SECCOMP_FILTER */ |
83 | static inline void put_seccomp_filter(struct task_struct *tsk) | |
84 | { | |
85 | return; | |
86 | } | |
87 | static inline void get_seccomp_filter(struct task_struct *tsk) | |
88 | { | |
89 | return; | |
90 | } | |
91 | #endif /* CONFIG_SECCOMP_FILTER */ | |
f8e529ed TA |
92 | |
93 | #if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE) | |
94 | extern long seccomp_get_filter(struct task_struct *task, | |
95 | unsigned long filter_off, void __user *data); | |
96 | #else | |
97 | static inline long seccomp_get_filter(struct task_struct *task, | |
98 | unsigned long n, void __user *data) | |
99 | { | |
100 | return -EINVAL; | |
101 | } | |
102 | #endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */ | |
1da177e4 | 103 | #endif /* _LINUX_SECCOMP_H */ |