strerror.c
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上传日期:2007-01-04
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文件大小:5k
- /* $Id: strerror.c,v 1.3 1999/05/13 16:35:58 karls Exp $ */
- #ifdef HAVE_CONFIG_H
- #include "autoconf.h"
- #endif /* HAVE_CONFIG_H */
- #include "common.h"
- #if !HAVE_STRERROR
- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #if defined(LIBC_SCCS) && !defined(lint)
- static char *rcsid = "$OpenBSD: __strerror.c,v 1.6 1996/09/25 08:17:30 deraadt Exp $";
- #endif /* LIBC_SCCS and not lint */
- #ifndef NL_TEXTMAX
- #define NL_TEXTMAX 255
- #endif /* !NL_TEXTMAX */
- int sys_nerr;
- char *sys_errlist[];
- int errno;
- #if 0
- #include <errno.h>
- #include <limits.h>
- #include <stdio.h>
- #include <string.h>
- #endif
- static char *itoa(num)
- int num;
- {
- static char buffer[11];
- char *p;
- p = buffer + 4;
- while (num >= 10) {
- *--p = (num % 10) + '0';
- num /= 10;
- }
- *p = (num % 10) + '0';
- return p;
- }
- /*
- * Since perror() is not allowed to change the contents of strerror()'s
- * static buffer, both functions supply their own buffers to the
- * internal function __strerror().
- */
- char *
- __strerror(num, buf)
- int num;
- char *buf;
- {
- #define UPREFIX "Unknown error: "
- register unsigned int errnum;
- errnum = num; /* convert to unsigned */
- if (errnum < sys_nerr) {
- return(sys_errlist[errnum]);
- } else {
- strcpy(buf, UPREFIX);
- strncat(buf, itoa(errnum), NL_TEXTMAX-strlen(buf)-1);
- }
- return buf;
- }
- /*
- * Copyright (c) 1988 Regents of the University of California.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #if defined(LIBC_SCCS) && !defined(lint)
- static char *rcsid = "$OpenBSD: strerror.c,v 1.2 1996/08/19 08:34:17 tholo Exp $";
- #endif /* LIBC_SCCS and not lint */
- #if 0
- #include <string.h>
- #include <limits.h>
- #endif
- /*
- * Since perror() is not allowed to change the contents of strerror()'s
- * static buffer, both functions supply their own buffers to the
- * internal function __strerror().
- */
- char *
- strerror(num)
- int num;
- {
- static char buf[NL_TEXTMAX];
- return __strerror(num, buf);
- }
- #else
- static void avoid_error __P((void));
- static void avoid_error()
- {
- avoid_error();
- }
- #endif /* HAVE_STRERROR */