Annotation of embedaddon/libevent/strlcpy.c, revision 1.1
1.1 ! misho 1: /* $OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com>
! 5: * All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. The name of the author may not be used to endorse or promote products
! 16: * derived from this software without specific prior written permission.
! 17: *
! 18: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
! 19: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
! 20: * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
! 21: * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
! 22: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
! 23: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
! 24: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
! 25: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
! 26: * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
! 27: * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
! 28: */
! 29:
! 30: #if defined(LIBC_SCCS) && !defined(lint)
! 31: static char *rcsid = "$OpenBSD: strlcpy.c,v 1.5 2001/05/13 15:40:16 deraadt Exp $";
! 32: #endif /* LIBC_SCCS and not lint */
! 33:
! 34: #include <sys/types.h>
! 35:
! 36: #ifdef HAVE_CONFIG_H
! 37: #include "config.h"
! 38: #endif /* HAVE_CONFIG_H */
! 39:
! 40: #ifndef HAVE_STRLCPY
! 41: #include "strlcpy-internal.h"
! 42:
! 43: /*
! 44: * Copy src to string dst of size siz. At most siz-1 characters
! 45: * will be copied. Always NUL terminates (unless siz == 0).
! 46: * Returns strlen(src); if retval >= siz, truncation occurred.
! 47: */
! 48: size_t
! 49: _event_strlcpy(dst, src, siz)
! 50: char *dst;
! 51: const char *src;
! 52: size_t siz;
! 53: {
! 54: register char *d = dst;
! 55: register const char *s = src;
! 56: register size_t n = siz;
! 57:
! 58: /* Copy as many bytes as will fit */
! 59: if (n != 0 && --n != 0) {
! 60: do {
! 61: if ((*d++ = *s++) == 0)
! 62: break;
! 63: } while (--n != 0);
! 64: }
! 65:
! 66: /* Not enough room in dst, add NUL and traverse rest of src */
! 67: if (n == 0) {
! 68: if (siz != 0)
! 69: *d = '\0'; /* NUL-terminate dst */
! 70: while (*s++)
! 71: ;
! 72: }
! 73:
! 74: return(s - src - 1); /* count does not include NUL */
! 75: }
! 76: #endif
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