1 | /* SPDX-License-Identifier: GPL-2.0 */ |
2 | #ifndef _LINUX_SECCOMP_H |
3 | #define _LINUX_SECCOMP_H |
4 | |
5 | #include <uapi/linux/seccomp.h> |
6 | #include <linux/seccomp_types.h> |
7 | |
8 | #define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \ |
9 | SECCOMP_FILTER_FLAG_LOG | \ |
10 | SECCOMP_FILTER_FLAG_SPEC_ALLOW | \ |
11 | SECCOMP_FILTER_FLAG_NEW_LISTENER | \ |
12 | SECCOMP_FILTER_FLAG_TSYNC_ESRCH | \ |
13 | SECCOMP_FILTER_FLAG_WAIT_KILLABLE_RECV) |
14 | |
15 | /* sizeof() the first published struct seccomp_notif_addfd */ |
16 | #define SECCOMP_NOTIFY_ADDFD_SIZE_VER0 24 |
17 | #define SECCOMP_NOTIFY_ADDFD_SIZE_LATEST SECCOMP_NOTIFY_ADDFD_SIZE_VER0 |
18 | |
19 | #ifdef CONFIG_SECCOMP |
20 | |
21 | #include <linux/thread_info.h> |
22 | #include <linux/atomic.h> |
23 | #include <asm/seccomp.h> |
24 | |
25 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
26 | extern int __secure_computing(const struct seccomp_data *sd); |
27 | static inline int secure_computing(void) |
28 | { |
29 | if (unlikely(test_syscall_work(SECCOMP))) |
30 | return __secure_computing(NULL); |
31 | return 0; |
32 | } |
33 | #else |
34 | extern void secure_computing_strict(int this_syscall); |
35 | #endif |
36 | |
37 | extern long prctl_get_seccomp(void); |
38 | extern long prctl_set_seccomp(unsigned long, void __user *); |
39 | |
40 | static inline int seccomp_mode(struct seccomp *s) |
41 | { |
42 | return s->mode; |
43 | } |
44 | |
45 | #else /* CONFIG_SECCOMP */ |
46 | |
47 | #include <linux/errno.h> |
48 | |
49 | struct seccomp_data; |
50 | |
51 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
52 | static inline int secure_computing(void) { return 0; } |
53 | static inline int __secure_computing(const struct seccomp_data *sd) { return 0; } |
54 | #else |
55 | static inline void secure_computing_strict(int this_syscall) { return; } |
56 | #endif |
57 | |
58 | static inline long prctl_get_seccomp(void) |
59 | { |
60 | return -EINVAL; |
61 | } |
62 | |
63 | static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3) |
64 | { |
65 | return -EINVAL; |
66 | } |
67 | |
68 | static inline int seccomp_mode(struct seccomp *s) |
69 | { |
70 | return SECCOMP_MODE_DISABLED; |
71 | } |
72 | #endif /* CONFIG_SECCOMP */ |
73 | |
74 | #ifdef CONFIG_SECCOMP_FILTER |
75 | extern void seccomp_filter_release(struct task_struct *tsk); |
76 | extern void get_seccomp_filter(struct task_struct *tsk); |
77 | #else /* CONFIG_SECCOMP_FILTER */ |
78 | static inline void seccomp_filter_release(struct task_struct *tsk) |
79 | { |
80 | return; |
81 | } |
82 | static inline void get_seccomp_filter(struct task_struct *tsk) |
83 | { |
84 | return; |
85 | } |
86 | #endif /* CONFIG_SECCOMP_FILTER */ |
87 | |
88 | #if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE) |
89 | extern long seccomp_get_filter(struct task_struct *task, |
90 | unsigned long filter_off, void __user *data); |
91 | extern long seccomp_get_metadata(struct task_struct *task, |
92 | unsigned long filter_off, void __user *data); |
93 | #else |
94 | static inline long seccomp_get_filter(struct task_struct *task, |
95 | unsigned long n, void __user *data) |
96 | { |
97 | return -EINVAL; |
98 | } |
99 | static inline long seccomp_get_metadata(struct task_struct *task, |
100 | unsigned long filter_off, |
101 | void __user *data) |
102 | { |
103 | return -EINVAL; |
104 | } |
105 | #endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */ |
106 | |
107 | #ifdef CONFIG_SECCOMP_CACHE_DEBUG |
108 | struct seq_file; |
109 | struct pid_namespace; |
110 | struct pid; |
111 | |
112 | int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns, |
113 | struct pid *pid, struct task_struct *task); |
114 | #endif |
115 | #endif /* _LINUX_SECCOMP_H */ |
116 | |