projects / thirdparty / kernel / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | #ifndef _LINUX_SECCOMP_H |
| 2 | #define _LINUX_SECCOMP_H | |
| 3 | ||
| 607ca46e | 4 | #include <uapi/linux/seccomp.h> |
| e2cfabdf | 5 | |
| e66a3997 TH |
6 | #define SECCOMP_FILTER_FLAG_MASK (SECCOMP_FILTER_FLAG_TSYNC | \ |
| 7 | SECCOMP_FILTER_FLAG_LOG) | |
| c2e1f2e3 | 8 | |
| 1da177e4 LT |
9 | #ifdef CONFIG_SECCOMP |
| 10 | ||
| 1da177e4 LT |
11 | #include <linux/thread_info.h> |
| 12 | #include <asm/seccomp.h> | |
| 13 | ||
| e2cfabdf WD |
14 | struct seccomp_filter; |
| 15 | /** | |
| 16 | * struct seccomp - the state of a seccomp'ed process | |
| 17 | * | |
| 18 | * @mode: indicates one of the valid values above for controlled | |
| 19 | * system calls available to a process. | |
| dbd95212 KC |
20 | * @filter: must always point to a valid seccomp-filter or NULL as it is |
| 21 | * accessed without locking during system call entry. | |
| e2cfabdf WD |
22 | * |
| 23 | * @filter must only be accessed from the context of current as there | |
| dbd95212 | 24 | * is no read locking. |
| e2cfabdf | 25 | */ |
| 932ecebb WD |
26 | struct seccomp { |
| 27 | int mode; | |
| e2cfabdf | 28 | struct seccomp_filter *filter; |
| 932ecebb | 29 | }; |
| 1da177e4 | 30 | |
| a4412fc9 | 31 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
| 2f275de5 AL |
32 | extern int __secure_computing(const struct seccomp_data *sd); |
| 33 | static inline int secure_computing(const struct seccomp_data *sd) | |
| 1da177e4 LT |
34 | { |
| 35 | if (unlikely(test_thread_flag(TIF_SECCOMP))) | |
| 2f275de5 | 36 | return __secure_computing(sd); |
| acf3b2c7 | 37 | return 0; |
| 1da177e4 | 38 | } |
| a4412fc9 AL |
39 | #else |
| 40 | extern void secure_computing_strict(int this_syscall); | |
| 41 | #endif | |
| e4da89d0 | 42 | |
| 1d9d02fe | 43 | extern long prctl_get_seccomp(void); |
| e2cfabdf | 44 | extern long prctl_set_seccomp(unsigned long, char __user *); |
| 1d9d02fe | 45 | |
| 932ecebb | 46 | static inline int seccomp_mode(struct seccomp *s) |
| 5cec93c2 AL |
47 | { |
| 48 | return s->mode; | |
| 49 | } | |
| 50 | ||
| 1da177e4 LT |
51 | #else /* CONFIG_SECCOMP */ |
| 52 | ||
| 42a17ad2 RB |
53 | #include <linux/errno.h> |
| 54 | ||
| 932ecebb | 55 | struct seccomp { }; |
| e2cfabdf | 56 | struct seccomp_filter { }; |
| 1da177e4 | 57 | |
| a4412fc9 | 58 | #ifdef CONFIG_HAVE_ARCH_SECCOMP_FILTER |
| 2f275de5 | 59 | static inline int secure_computing(struct seccomp_data *sd) { return 0; } |
| a4412fc9 | 60 | #else |
| e4da89d0 | 61 | static inline void secure_computing_strict(int this_syscall) { return; } |
| a4412fc9 | 62 | #endif |
| 1da177e4 | 63 | |
| 1d9d02fe AA |
64 | static inline long prctl_get_seccomp(void) |
| 65 | { | |
| 66 | return -EINVAL; | |
| 67 | } | |
| 68 | ||
| e2cfabdf | 69 | static inline long prctl_set_seccomp(unsigned long arg2, char __user *arg3) |
| 1d9d02fe AA |
70 | { |
| 71 | return -EINVAL; | |
| 72 | } | |
| 73 | ||
| 932ecebb | 74 | static inline int seccomp_mode(struct seccomp *s) |
| 5cec93c2 | 75 | { |
| 221272f9 | 76 | return SECCOMP_MODE_DISABLED; |
| 5cec93c2 | 77 | } |
| 1da177e4 LT |
78 | #endif /* CONFIG_SECCOMP */ |
| 79 | ||
| e2cfabdf WD |
80 | #ifdef CONFIG_SECCOMP_FILTER |
| 81 | extern void put_seccomp_filter(struct task_struct *tsk); | |
| 82 | extern void get_seccomp_filter(struct task_struct *tsk); | |
| e2cfabdf WD |
83 | #else /* CONFIG_SECCOMP_FILTER */ |
| 84 | static inline void put_seccomp_filter(struct task_struct *tsk) | |
| 85 | { | |
| 86 | return; | |
| 87 | } | |
| 88 | static inline void get_seccomp_filter(struct task_struct *tsk) | |
| 89 | { | |
| 90 | return; | |
| 91 | } | |
| 92 | #endif /* CONFIG_SECCOMP_FILTER */ | |
| f8e529ed TA |
93 | |
| 94 | #if defined(CONFIG_SECCOMP_FILTER) && defined(CONFIG_CHECKPOINT_RESTORE) | |
| 95 | extern long seccomp_get_filter(struct task_struct *task, | |
| 96 | unsigned long filter_off, void __user *data); | |
| 97 | #else | |
| 98 | static inline long seccomp_get_filter(struct task_struct *task, | |
| 99 | unsigned long n, void __user *data) | |
| 100 | { | |
| 101 | return -EINVAL; | |
| 102 | } | |
| 103 | #endif /* CONFIG_SECCOMP_FILTER && CONFIG_CHECKPOINT_RESTORE */ | |
| 1da177e4 | 104 | #endif /* _LINUX_SECCOMP_H */ |