Nut/OS  4.10.3
API Reference
strdup.c
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00001 /*
00002  * Copyright (C) 2004 by egnite Software GmbH. All rights reserved.
00003  *
00004  * Redistribution and use in source and binary forms, with or without
00005  * modification, are permitted provided that the following conditions
00006  * are met:
00007  *
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the copyright holders nor the names of
00014  *    contributors may be used to endorse or promote products derived
00015  *    from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
00018  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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00027  * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00028  * SUCH DAMAGE.
00029  *
00030  * For additional information see http://www.ethernut.de/
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00032  *-
00033  * Copyright (c) 1988, 1993
00034  *      The Regents of the University of California.  All rights reserved.
00035  *
00036  * Redistribution and use in source and binary forms, with or without
00037  * modification, are permitted provided that the following conditions
00038  * are met:
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00040  *    notice, this list of conditions and the following disclaimer.
00041  * 2. Redistributions in binary form must reproduce the above copyright
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00050  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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00060 
00061 /*
00062  * $Log$
00063  * Revision 1.1  2009/02/06 15:45:04  haraldkipp
00064  * Routines using heap memory moved from c to crt module.
00065  * We now have strdup() and calloc().
00066  *
00067  * Revision 1.1  2004/09/08 10:24:00  haraldkipp
00068  * Generic C string library added
00069  *
00070  */
00071 
00072 #include <sys/types.h>
00073 
00074 #include <stddef.h>
00075 #include <stdlib.h>
00076 #include <string.h>
00077 
00082 
00093 char *strdup(CONST char *str)
00094 {
00095     size_t siz;
00096     char *copy;
00097 
00098     siz = strlen(str) + 1;
00099     if ((copy = malloc(siz)) == NULL) {
00100         return NULL;
00101     }
00102     memcpy(copy, str, siz);
00103 
00104     return copy;
00105 }
00106