68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
|
/*
|
||
|
|
* 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 sccsid[] = "@(#)strerror.c 5.6 (Berkeley) 5/4/91";
|
||
|
|
#endif /* LIBC_SCCS and not lint */
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
char *
|
||
|
|
strerror(num)
|
||
|
|
int num;
|
||
|
|
{
|
||
|
|
extern int sys_nerr;
|
||
|
|
extern char *sys_errlist[];
|
||
|
|
#define UPREFIX "Unknown error: "
|
||
|
|
static char ebuf[40] = UPREFIX; /* 64-bit number + slop */
|
||
|
|
register unsigned int errnum;
|
||
|
|
register char *p, *t;
|
||
|
|
char tmp[40];
|
||
|
|
|
||
|
|
errnum = num; /* convert to unsigned */
|
||
|
|
if (errnum < sys_nerr)
|
||
|
|
return(sys_errlist[errnum]);
|
||
|
|
|
||
|
|
/* Do this by hand, so we don't include stdio(3). */
|
||
|
|
t = tmp;
|
||
|
|
do {
|
||
|
|
*t++ = "0123456789"[errnum % 10];
|
||
|
|
} while (errnum /= 10);
|
||
|
|
for (p = ebuf + sizeof(UPREFIX) - 1;;) {
|
||
|
|
*p++ = *--t;
|
||
|
|
if (t <= tmp)
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return(ebuf);
|
||
|
|
}
|