strdup.c revision 261363 
1/*
2 * Copyright (c) 2000-2001, 2003 Proofpoint, Inc. and its suppliers.
3 *	All rights reserved.
4 *
5 * By using this file, you agree to the terms and conditions set
6 * forth in the LICENSE file which can be found at the top level of
7 * the sendmail distribution.
8 *
9 */
10
11#include <sm/gen.h>
12SM_RCSID("@(#)$Id: strdup.c,v 1.16 2013/11/22 20:51:43 ca Exp $")
13
14#include <sm/heap.h>
15#include <sm/string.h>
16
17/*
18**  SM_STRNDUP_X -- Duplicate a string of a given length
19**
20**	Allocates memory and copies source string (of given length) into it.
21**
22**	Parameters:
23**		s -- string to copy.
24**		n -- length to copy.
25**
26**	Returns:
27**		copy of string, raises exception if out of memory.
28**
29**	Side Effects:
30**		allocate memory for new string.
31*/
32
33char *
34sm_strndup_x(s, n)
35	const char *s;
36	size_t n;
37{
38	char *d = sm_malloc_x(n + 1);
39
40	(void) memcpy(d, s, n);
41	d[n] = '\0';
42	return d;
43}
44
45/*
46**  SM_STRDUP -- Duplicate a string
47**
48**	Allocates memory and copies source string into it.
49**
50**	Parameters:
51**		s -- string to copy.
52**
53**	Returns:
54**		copy of string, NULL if out of memory.
55**
56**	Side Effects:
57**		allocate memory for new string.
58*/
59
60char *
61sm_strdup(s)
62	char *s;
63{
64	size_t l;
65	char *d;
66
67	l = strlen(s) + 1;
68	d = sm_malloc_tagged(l, "sm_strdup", 0, sm_heap_group());
69	if (d != NULL)
70		(void) sm_strlcpy(d, s, l);
71	return d;
72}
73
74#if DO_NOT_USE_STRCPY
75
76/*
77**  SM_STRDUP_X -- Duplicate a string
78**
79**	Allocates memory and copies source string into it.
80**
81**	Parameters:
82**		s -- string to copy.
83**
84**	Returns:
85**		copy of string, exception if out of memory.
86**
87**	Side Effects:
88**		allocate memory for new string.
89*/
90
91char *
92sm_strdup_x(s)
93	const char *s;
94{
95	size_t l;
96	char *d;
97
98	l = strlen(s) + 1;
99	d = sm_malloc_tagged_x(l, "sm_strdup_x", 0, sm_heap_group());
100	(void) sm_strlcpy(d, s, l);
101	return d;
102}
103
104/*
105**  SM_PSTRDUP_X -- Duplicate a string (using "permanent" memory)
106**
107**	Allocates memory and copies source string into it.
108**
109**	Parameters:
110**		s -- string to copy.
111**
112**	Returns:
113**		copy of string, exception if out of memory.
114**
115**	Side Effects:
116**		allocate memory for new string.
117*/
118
119char *
120sm_pstrdup_x(s)
121	const char *s;
122{
123	size_t l;
124	char *d;
125
126	l = strlen(s) + 1;
127	d = sm_pmalloc_x(l);
128	(void) sm_strlcpy(d, s, l);
129	return d;
130}
131
132/*
133**  SM_STRDUP_X -- Duplicate a string
134**
135**	Allocates memory and copies source string into it.
136**
137**	Parameters:
138**		s -- string to copy.
139**		file -- name of source file
140**		line -- line in source file
141**		group -- heap group
142**
143**	Returns:
144**		copy of string, exception if out of memory.
145**
146**	Side Effects:
147**		allocate memory for new string.
148*/
149
150char *
151sm_strdup_tagged_x(s, file, line, group)
152	const char *s;
153	char *file;
154	int line, group;
155{
156	size_t l;
157	char *d;
158
159	l = strlen(s) + 1;
160	d = sm_malloc_tagged_x(l, file, line, group);
161	(void) sm_strlcpy(d, s, l);
162	return d;
163}
164
165#endif /* DO_NOT_USE_STRCPY */
166
167