1 .\" $NetBSD: copy.9,v 1.2 1996/01/09 03:23:04 thorpej Exp $
3 .\" Copyright (c) 1996 Jason R. Thorpe.
4 .\" All rights reserved.
6 .\" This code is derived from software contributed by Kenneth Stailey.
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18 .\" This product includes software developed for the NetBSD Project
19 .\" by Jason R. Thorpe.
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48 .Nd heterogenous address space copy functions
53 .Fn copyin "const void *uaddr" "void *kaddr" "size_t len"
55 .Fn copyin_nofault "const void *uaddr" "void *kaddr" "size_t len"
57 .Fn copyout "const void *kaddr" "void *uaddr" "size_t len"
59 .Fn copyout_nofault "const void *kaddr" "void *uaddr" "size_t len"
61 .Fn copystr "const void *kfaddr" "void *kdaddr" "size_t len" "size_t *done"
63 .Fn copyinstr "const void *uaddr" "void *kaddr" "size_t len" "size_t *done"
67 functions are designed to copy contiguous data from one address space
71 is deprecated and should be replaced with
73 It will be removed from
82 bytes of data from the user-space address
84 to the kernel-space address
93 bytes of data from the kernel-space address
95 to the user-space address
102 functions require that the kernel-space and user-space data be
103 accessible without incurring a page fault.
104 The source and destination addresses must be physically mapped for
105 read and write access, respectively, and neither the source nor
106 destination addresses may be pageable.
110 function copies a NUL-terminated string, at most
112 bytes long, from kernel-space address
114 to kernel-space address
116 The number of bytes actually copied, including the terminating
122 .No non- Ns Dv NULL ) .
126 function copies a NUL-terminated string, at most
128 bytes long, from user-space address
130 to kernel-space address
132 The number of bytes actually copied, including the terminating
138 .No non- Ns Dv NULL ) .
142 functions return 0 on success.
147 if a bad address is encountered.
154 if a page fault occurs.
161 if the string is longer than