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 extern int __secure_computing(void); 26 27 #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER 28 static inline int secure_computing(void) 29 { 30 if (unlikely(test_syscall_work(SECCOMP))) 31 return __secure_computing(); 32 return 0; 33 } 34 #else 35 extern void secure_computing_strict(int this_syscall); 36 #endif 37 38 extern long prctl_get_seccomp(void); 39 extern long prctl_set_seccomp(unsigned long, void __user *); 40 41 static inline int seccomp_mode(struct seccomp *s) 42 { 43 return s->mode; 44 } 45 46 #else /* CONFIG_SECCOMP */ 47 48 #include <linux/errno.h> 49 50 struct seccomp_data; 51 52 #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER 53 static inline int secure_computing(void) { return 0; } 54 #else 55 static inline void secure_computing_strict(int this_syscall) { return; } 56 #endif 57 static inline int __secure_computing(void) { return 0; } 58 59 static inline long prctl_get_seccomp(void) 60 { 61 return -EINVAL; 62 } 63 64 static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3) 65 { 66 return -EINVAL; 67 } 68 69 static inline int seccomp_mode(struct seccomp *s) 70 { 71 return SECCOMP_MODE_DISABLED; 72 } 73 #endif /* CONFIG_SECCOMP */ 74 75 #ifdef CONFIG_SECCOMP_FILTER 76 extern void seccomp_filter_release(struct task_struct *tsk); 77 extern void get_seccomp_filter(struct task_struct *tsk); 78 #else /* CONFIG_SECCOMP_FILTER */ 79 static inline void seccomp_filter_release(struct task_struct *tsk) 80 { 81 return; 82 } 83 static inline void get_seccomp_filter(struct task_struct *tsk) 84 { 85 return; 86 } 87 #endif /* CONFIG_SECCOMP_FILTER */ 88 89 #if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE) 90 extern long seccomp_get_filter(struct task_struct *task, 91 unsigned long filter_off, void __user *data); 92 extern long seccomp_get_metadata(struct task_struct *task, 93 unsigned long filter_off, void __user *data); 94 #else 95 static inline long seccomp_get_filter(struct task_struct *task, 96 unsigned long n, void __user *data) 97 { 98 return -EINVAL; 99 } 100 static inline long seccomp_get_metadata(struct task_struct *task, 101 unsigned long filter_off, 102 void __user *data) 103 { 104 return -EINVAL; 105 } 106 #endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */ 107 108 #ifdef CONFIG_SECCOMP_CACHE_DEBUG 109 struct seq_file; 110 struct pid_namespace; 111 struct pid; 112 113 int proc_pid_seccomp_cache(struct seq_file *m, struct pid_namespace *ns, 114 struct pid *pid, struct task_struct *task); 115 #endif 116 #endif /* _LINUX_SECCOMP_H */ 117