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Diffstat (limited to 'src/lib/libc/string/strcpy.3')
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1 | .\" Copyright (c) 1990, 1991 The Regents of the University of California. | ||
2 | .\" All rights reserved. | ||
3 | .\" | ||
4 | .\" This code is derived from software contributed to Berkeley by | ||
5 | .\" Chris Torek and the American National Standards Committee X3, | ||
6 | .\" on Information Processing Systems. | ||
7 | .\" | ||
8 | .\" Redistribution and use in source and binary forms, with or without | ||
9 | .\" modification, are permitted provided that the following conditions | ||
10 | .\" are met: | ||
11 | .\" 1. Redistributions of source code must retain the above copyright | ||
12 | .\" notice, this list of conditions and the following disclaimer. | ||
13 | .\" 2. Redistributions in binary form must reproduce the above copyright | ||
14 | .\" notice, this list of conditions and the following disclaimer in the | ||
15 | .\" documentation and/or other materials provided with the distribution. | ||
16 | .\" 3. All advertising materials mentioning features or use of this software | ||
17 | .\" must display the following acknowledgement: | ||
18 | .\" This product includes software developed by the University of | ||
19 | .\" California, Berkeley and its contributors. | ||
20 | .\" 4. Neither the name of the University nor the names of its contributors | ||
21 | .\" may be used to endorse or promote products derived from this software | ||
22 | .\" without specific prior written permission. | ||
23 | .\" | ||
24 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
25 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
26 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
27 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
28 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
29 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
30 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
31 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
32 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
33 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
34 | .\" SUCH DAMAGE. | ||
35 | .\" | ||
36 | .\" $OpenBSD: strcpy.3,v 1.2 1996/08/19 08:34:13 tholo Exp $ | ||
37 | .\" | ||
38 | .Dd June 29, 1991 | ||
39 | .Dt STRCPY 3 | ||
40 | .Os BSD 4 | ||
41 | .Sh NAME | ||
42 | .Nm strcpy | ||
43 | .Nd copy strings | ||
44 | .Sh SYNOPSIS | ||
45 | .Fd #include <string.h> | ||
46 | .Ft char * | ||
47 | .Fn strcpy "char *dst" "const char *src" | ||
48 | .Ft char * | ||
49 | .Fn strncpy "char *dst" "const char *src" "size_t len" | ||
50 | .Sh DESCRIPTION | ||
51 | The | ||
52 | .Fn strcpy | ||
53 | and | ||
54 | .Fn strncpy | ||
55 | functions | ||
56 | copy the string | ||
57 | .Fa src | ||
58 | to | ||
59 | .Fa dst | ||
60 | (including the terminating | ||
61 | .Ql \e0 | ||
62 | character). | ||
63 | .Pp | ||
64 | The | ||
65 | .Fn strncpy | ||
66 | copies not more than | ||
67 | .Fa len | ||
68 | characters into | ||
69 | .Fa dst , | ||
70 | appending | ||
71 | .Ql \e0 | ||
72 | characters if | ||
73 | .Fa src | ||
74 | is less than | ||
75 | .Fa len | ||
76 | characters long, and | ||
77 | .Em not | ||
78 | terminating | ||
79 | .Fa dst | ||
80 | if | ||
81 | .Fa src | ||
82 | is more than | ||
83 | .Fa len | ||
84 | characters long. | ||
85 | .Sh RETURN VALUES | ||
86 | The | ||
87 | .Fn strcpy | ||
88 | and | ||
89 | .Fn strncpy | ||
90 | functions | ||
91 | return | ||
92 | .Fa dst . | ||
93 | .Sh EXAMPLES | ||
94 | The following sets | ||
95 | .Dq Li chararray | ||
96 | to | ||
97 | .Dq Li abc\e0\e0\e0 : | ||
98 | .Bd -literal -offset indent | ||
99 | (void)strncpy(chararray, "abc", 6). | ||
100 | .Ed | ||
101 | .Pp | ||
102 | The following sets | ||
103 | .Dq Li chararray | ||
104 | to | ||
105 | .Dq Li abcdef : | ||
106 | .Bd -literal -offset indent | ||
107 | (void)strncpy(chararray, "abcdefgh", 6); | ||
108 | .Ed | ||
109 | .Sh SEE ALSO | ||
110 | .Xr bcopy 3 , | ||
111 | .Xr memccpy 3 , | ||
112 | .Xr memcpy 3 , | ||
113 | .Xr memmove 3 | ||
114 | .Sh STANDARDS | ||
115 | The | ||
116 | .Fn strcpy | ||
117 | and | ||
118 | .Fn strncpy | ||
119 | functions | ||
120 | conform to | ||
121 | .St -ansiC . | ||