1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _LINUX_SECCOMP_H
3 #define _LINUX_SECCOMP_H
5 #include <uapi/linux/seccomp.h>
7 #define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \
8 SECCOMP_FILTER_FLAG_LOG | \
9 SECCOMP_FILTER_FLAG_SPEC_ALLOW)
13 #include <linux/thread_info.h>
14 #include <asm/seccomp.h>
16 struct seccomp_filter;
18 * struct seccomp - the state of a seccomp'ed process
20 * @mode: indicates one of the valid values above for controlled
21 * system calls available to a process.
22 * @filter: must always point to a valid seccomp-filter or NULL as it is
23 * accessed without locking during system call entry.
25 * @filter must only be accessed from the context of current as there
30 struct seccomp_filter *filter;
33 #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
34 extern int __secure_computing(const struct seccomp_data *sd);
35 static inline int secure_computing(const struct seccomp_data *sd)
37 if (unlikely(test_thread_flag(TIF_SECCOMP)))
38 return __secure_computing(sd);
42 extern void secure_computing_strict(int this_syscall);
45 extern long prctl_get_seccomp(void);
46 extern long prctl_set_seccomp(unsigned long, char __user *);
48 static inline int seccomp_mode(struct seccomp *s)
53 #else /* CONFIG_SECCOMP */
55 #include <linux/errno.h>
58 struct seccomp_filter { };
60 #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
61 static inline int secure_computing(struct seccomp_data *sd) { return 0; }
63 static inline void secure_computing_strict(int this_syscall) { return; }
66 static inline long prctl_get_seccomp(void)
71 static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
76 static inline int seccomp_mode(struct seccomp *s)
78 return SECCOMP_MODE_DISABLED;
80 #endif /* CONFIG_SECCOMP */
82 #ifdef CONFIG_SECCOMP_FILTER
83 extern void put_seccomp_filter(struct task_struct *tsk);
84 extern void get_seccomp_filter(struct task_struct *tsk);
85 #else /* CONFIG_SECCOMP_FILTER */
86 static inline void put_seccomp_filter(struct task_struct *tsk)
90 static inline void get_seccomp_filter(struct task_struct *tsk)
94 #endif /* CONFIG_SECCOMP_FILTER */
96 #if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE)
97 extern long seccomp_get_filter(struct task_struct *task,
98 unsigned long filter_off, void __user *data);
99 extern long seccomp_get_metadata(struct task_struct *task,
100 unsigned long filter_off, void __user *data);
102 static inline long seccomp_get_filter(struct task_struct *task,
103 unsigned long n, void __user *data)
107 static inline long seccomp_get_metadata(struct task_struct *task,
108 unsigned long filter_off,
113 #endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */
114 #endif /* _LINUX_SECCOMP_H */