strdup.c 2.4 KB

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  1. /* $OpenBSD: strdup.c,v 1.3 1997/08/20 04:18:52 millert Exp $ */
  2. /*
  3. * Copyright (c) 1988, 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. All advertising materials mentioning features or use of this software
  15. * must display the following acknowledgement:
  16. * This product includes software developed by the University of
  17. * California, Berkeley and its contributors.
  18. * 4. Neither the name of the University nor the names of its contributors
  19. * may be used to endorse or promote products derived from this software
  20. * without specific prior written permission.
  21. *
  22. * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25. * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32. * SUCH DAMAGE.
  33. */
  34. #if defined(LIBC_SCCS) && !defined(lint)
  35. #if 0
  36. static char sccsid[] = "@(#)strdup.c 8.1 (Berkeley) 6/4/93";
  37. #else
  38. static char *rcsid = "$OpenBSD: strdup.c,v 1.3 1997/08/20 04:18:52 millert Exp $";
  39. #endif
  40. #endif /* LIBC_SCCS and not lint */
  41. #include <sys/types.h>
  42. #include <stddef.h>
  43. #include <stdlib.h>
  44. #include <string.h>
  45. char *
  46. openbsd_strdup(str)
  47. const char *str;
  48. {
  49. size_t siz;
  50. char *copy;
  51. siz = strlen(str) + 1;
  52. if ((copy = malloc(siz)) == NULL)
  53. return(NULL);
  54. (void)memcpy(copy, str, siz);
  55. return(copy);
  56. }