1 /* 2 * Copyright (c) 2000-2001, 2003 Sendmail, 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> 12 SM_RCSID("@(#)$Id: strdup.c,v 1.15 2003/10/10 17:56:57 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 33 char * 34 sm_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 60 char * 61 sm_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 91 char * 92 sm_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 */ 118 119 char * 120 sm_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 */ 149 150 char * 151 sm_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