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#ifndef _LINUX_SECCOMP_H
#define _LINUX_SECCOMP_H
#include <uapi/linux/seccomp.h>
#define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \
SECCOMP_FILTER_FLAG_LOG | \
SECCOMP_FILTER_FLAG_SPEC_ALLOW)
#ifdef CONFIG_SECCOMP
#include <linux/thread_info.h>
#include <asm/seccomp.h>
struct seccomp_filter;
/**
* struct seccomp - the state of a seccomp'ed process
*
* @mode: indicates one of the valid values above for controlled
* system calls available to a process.
* @filter: must always point to a valid seccomp-filter or NULL as it is
* accessed without locking during system call entry.
*
* @filter must only be accessed from the context of current as there
* is no read locking.
*/
struct seccomp {
int mode;
struct seccomp_filter *filter;
};
#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
extern int __secure_computing(void);
static inline int secure_computing(void)
{
if (unlikely(test_thread_flag(TIF_SECCOMP)))
return __secure_computing();
return 0;
}
#define SECCOMP_PHASE1_OK 0
#define SECCOMP_PHASE1_SKIP 1
extern u32 seccomp_phase1(struct seccomp_data *sd);
int seccomp_phase2(u32 phase1_result);
#else
extern void secure_computing_strict(int this_syscall);
#endif
extern long prctl_get_seccomp(void);
extern long prctl_set_seccomp(unsigned long, char __user *);
static inline int seccomp_mode(struct seccomp *s)
{
return s->mode;
}
#else /* CONFIG_SECCOMP */
#include <linux/errno.h>
struct seccomp { };
struct seccomp_filter { };
#ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER
static inline int secure_computing(void) { return 0; }
#else
static inline void secure_computing_strict(int this_syscall) { return; }
#endif
static inline long prctl_get_seccomp(void)
{
return -EINVAL;
}
static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3)
{
return -EINVAL;
}
static inline int seccomp_mode(struct seccomp *s)
{
return SECCOMP_MODE_DISABLED;
}
#endif /* CONFIG_SECCOMP */
#ifdef CONFIG_SECCOMP_FILTER
extern void put_seccomp_filter(struct task_struct *tsk);
extern void get_seccomp_filter(struct task_struct *tsk);
#else /* CONFIG_SECCOMP_FILTER */
static inline void put_seccomp_filter(struct task_struct *tsk)
{
return;
}
static inline void get_seccomp_filter(struct task_struct *tsk)
{
return;
}
#endif /* CONFIG_SECCOMP_FILTER */
#if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE)
extern long seccomp_get_filter(struct task_struct *task,
unsigned long filter_off, void __user *data);
#else
static inline long seccomp_get_filter(struct task_struct *task,
unsigned long n, void __user *data)
{
return -EINVAL;
}
#endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */
#endif /* _LINUX_SECCOMP_H */