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sys/compat/linuxkpi/common/include/linux/uaccess.h
| Show First 20 Lines • Show All 83 Lines • ▼ Show 20 Lines | |||||
| } while (0) | } while (0) | ||||
| static inline bool | static inline bool | ||||
| pagefault_disabled(void) | pagefault_disabled(void) | ||||
| { | { | ||||
| return ((curthread->td_pflags & TDP_NOFAULTING) != 0); | return ((curthread->td_pflags & TDP_NOFAULTING) != 0); | ||||
| } | } | ||||
| static inline int | |||||
| __copy_to_user_inatomic(void __user *to, const void *from, unsigned n) | |||||
| { | |||||
| return (copyout_nofault(from, to, n) != 0 ? n : 0); | |||||
| } | |||||
| #define __copy_to_user_inatomic_nocache(to, from, n) \ | |||||
| __copy_to_user_inatomic((to), (from), (n)) | |||||
| static inline unsigned long | |||||
| __copy_from_user_inatomic(void *to, const void __user *from, | |||||
| unsigned long n) | |||||
| { | |||||
| /* | |||||
| * XXXKIB. Equivalent Linux function is implemented using | |||||
| * MOVNTI for aligned moves. For unaligned head and tail, | |||||
| * normal move is performed. As such, it is not incorrect, if | |||||
| * only somewhat slower, to use normal copyin. All uses | |||||
| * except shmem_pwrite_fast() have the destination mapped WC. | |||||
| */ | |||||
| return ((copyin_nofault(__DECONST(void *, from), to, n) != 0 ? n : 0)); | |||||
| } | |||||
| #define __copy_from_user_inatomic_nocache(to, from, n) \ | |||||
| __copy_from_user_inatomic((to), (from), (n)) | |||||
| #endif /* _LINUXKPI_LINUX_UACCESS_H_ */ | #endif /* _LINUXKPI_LINUX_UACCESS_H_ */ | ||||