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29 * Copyright (c) 1997 by Apple Computer, Inc., all rights reserved
30 * Copyright (c) 1993 NeXT Computer, Inc.
34 #include <sys/param.h>
35 #include <sys/systm.h>
36 #include <sys/ioctl.h>
39 #include <sys/kauth.h>
40 #include <sys/ucred.h>
41 #include <sys/proc_internal.h>
43 #include <kern/task.h>
44 #include <kern/thread.h>
45 #include <vm/vm_map.h>
46 #include <machine/machine_routines.h>
49 * copy a null terminated string from the kernel address space into
50 * the user address space.
51 * - if the user is denied write access, return EFAULT.
52 * - if the end of string isn't found before
53 * maxlen bytes are copied, return ENAMETOOLONG,
54 * indicating an incomplete copy.
55 * - otherwise, return 0, indicating success.
56 * the number of bytes copied is always returned in lencopied.
59 copyoutstr(const void *from
, user_addr_t to
, size_t maxlen
, size_t *lencopied
)
65 slen
= strlen(from
) + 1;
69 len
= min(maxlen
,slen
);
70 if (copyout(from
, to
, len
))
79 * copy a null terminated string from one point to another in
80 * the kernel address space.
81 * - no access checks are performed.
82 * - if the end of string isn't found before
83 * maxlen bytes are copied, return ENAMETOOLONG,
84 * indicating an incomplete copy.
85 * - otherwise, return 0, indicating success.
86 * the number of bytes copied is always returned in lencopied.
88 /* from ppc/fault_copy.c -Titan1T4 VERSION */
90 copystr(const void *vfrom
, void *vto
, size_t maxlen
, size_t *lencopied
)
93 char const *from
= (char const *) vfrom
;
94 char *to
= (char *) vto
;
96 for (l
= 0; l
< maxlen
; l
++) {
97 if ((*to
++ = *from
++) == '\0') {
109 copywithin(void *src
, void *dst
, size_t count
)
111 bcopy(src
,dst
,count
);