105 lines
2.6 KiB
C
105 lines
2.6 KiB
C
|
#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_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(const struct seccomp_data *sd);
|
||
|
|
static inline int secure_computing(const struct seccomp_data *sd)
|
||
|
|
{
|
||
|
|
if (unlikely(test_thread_flag(TIF_SECCOMP)))
|
||
|
|
return __secure_computing(sd);
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
#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(struct seccomp_data *sd) { 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 */
|