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author | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
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committer | cvs2svn <admin@example.com> | 2025-04-14 17:32:06 +0000 |
commit | eb8dd9dca1228af0cd132f515509051ecfabf6f6 (patch) | |
tree | edb6da6af7e865d488dc1a29309f1e1ec226e603 /src/lib/libc/string/strdup.3 | |
parent | 247f0352e0ed72a4f476db9dc91f4d982bc83eb2 (diff) | |
download | openbsd-tb_20250414.tar.gz openbsd-tb_20250414.tar.bz2 openbsd-tb_20250414.zip |
This commit was manufactured by cvs2git to create tag 'tb_20250414'.tb_20250414
Diffstat (limited to 'src/lib/libc/string/strdup.3')
-rw-r--r-- | src/lib/libc/string/strdup.3 | 119 |
1 files changed, 0 insertions, 119 deletions
diff --git a/src/lib/libc/string/strdup.3 b/src/lib/libc/string/strdup.3 deleted file mode 100644 index 283f3bc0ea..0000000000 --- a/src/lib/libc/string/strdup.3 +++ /dev/null | |||
@@ -1,119 +0,0 @@ | |||
1 | .\" $OpenBSD: strdup.3,v 1.22 2015/12/01 01:32:48 mmcc Exp $ | ||
2 | .\" | ||
3 | .\" Copyright (c) 1990, 1991, 1993 | ||
4 | .\" The Regents of the University of California. All rights reserved. | ||
5 | .\" | ||
6 | .\" Redistribution and use in source and binary forms, with or without | ||
7 | .\" modification, are permitted provided that the following conditions | ||
8 | .\" are met: | ||
9 | .\" 1. Redistributions of source code must retain the above copyright | ||
10 | .\" notice, this list of conditions and the following disclaimer. | ||
11 | .\" 2. Redistributions in binary form must reproduce the above copyright | ||
12 | .\" notice, this list of conditions and the following disclaimer in the | ||
13 | .\" documentation and/or other materials provided with the distribution. | ||
14 | .\" 3. Neither the name of the University nor the names of its contributors | ||
15 | .\" may be used to endorse or promote products derived from this software | ||
16 | .\" without specific prior written permission. | ||
17 | .\" | ||
18 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | ||
19 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
20 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
21 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | ||
22 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
23 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
24 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
25 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
26 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
27 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
28 | .\" SUCH DAMAGE. | ||
29 | .\" | ||
30 | .\" @(#)strdup.3 8.1 (Berkeley) 6/9/93 | ||
31 | .\" | ||
32 | .Dd $Mdocdate: December 1 2015 $ | ||
33 | .Dt STRDUP 3 | ||
34 | .Os | ||
35 | .Sh NAME | ||
36 | .Nm strdup , | ||
37 | .Nm strndup | ||
38 | .Nd save a copy of a string | ||
39 | .Sh SYNOPSIS | ||
40 | .In string.h | ||
41 | .Ft char * | ||
42 | .Fn strdup "const char *s" | ||
43 | .Ft char * | ||
44 | .Fn strndup "const char *s" "size_t maxlen" | ||
45 | .Sh DESCRIPTION | ||
46 | The | ||
47 | .Fn strdup | ||
48 | function allocates sufficient memory for a copy of the string | ||
49 | .Fa s , | ||
50 | does the copy, and returns a pointer to it. | ||
51 | The pointer may subsequently be used as an argument to the function | ||
52 | .Xr free 3 . | ||
53 | .Pp | ||
54 | The | ||
55 | .Fn strndup | ||
56 | function behaves similarly to | ||
57 | .Nm strdup | ||
58 | but only copies up to | ||
59 | .Fa maxlen | ||
60 | characters from | ||
61 | .Fa s . | ||
62 | The resulting string is always NUL-terminated. | ||
63 | .Pp | ||
64 | If the memory allocation fails, | ||
65 | .Dv NULL | ||
66 | is returned. | ||
67 | .Sh EXAMPLES | ||
68 | The following will point | ||
69 | .Va p | ||
70 | to an allocated area of memory containing the NUL-terminated string | ||
71 | .Qq foobar : | ||
72 | .Bd -literal -offset indent | ||
73 | char *p; | ||
74 | |||
75 | p = strdup("foobar"); | ||
76 | if (p == NULL) | ||
77 | err(1, NULL); | ||
78 | .Ed | ||
79 | .Sh ERRORS | ||
80 | The | ||
81 | .Fn strdup | ||
82 | and | ||
83 | .Fn strndup | ||
84 | functions may fail and set the external variable | ||
85 | .Va errno | ||
86 | for any of the errors specified for the library function | ||
87 | .Xr malloc 3 . | ||
88 | .Sh SEE ALSO | ||
89 | .Xr free 3 , | ||
90 | .Xr malloc 3 , | ||
91 | .Xr strcpy 3 , | ||
92 | .Xr strlcpy 3 , | ||
93 | .Xr strlen 3 , | ||
94 | .Xr wcsdup 3 | ||
95 | .Sh STANDARDS | ||
96 | The | ||
97 | .Fn strdup | ||
98 | and | ||
99 | .Fn strndup | ||
100 | functions conform to | ||
101 | .St -p1003.1-2008 . | ||
102 | .Sh HISTORY | ||
103 | A | ||
104 | .Fn strdup | ||
105 | macro was first used in the | ||
106 | .Bx 4.1c | ||
107 | debugger, | ||
108 | .Sy dbx . | ||
109 | It was rewritten as a C function for the | ||
110 | .Bx 4.3 | ||
111 | .Xr inetd 8 | ||
112 | and first appeared in the C library of | ||
113 | .Bx 4.3 Reno . | ||
114 | The | ||
115 | .Fn strndup | ||
116 | function appeared in glibc 2.0, was reimplemented for | ||
117 | .Nx 4.0 , | ||
118 | and ported to | ||
119 | .Ox 4.8 . | ||