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- /* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Library General Public License for more details.
-
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If
- not, write to the Free Software Foundation, Inc., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <stdio.h>
- #include <errno.h>
-
- #ifndef HAVE_GNU_LD
- #define _sys_errlist sys_errlist
- #define _sys_nerr sys_nerr
- #endif
-
- /* Print a line on stderr consisting of the text in S, a colon, a space,
- a message describing the meaning of the contents of `errno' and a newline.
- If S is NULL or "", the colon and space are omitted. */
- void
- DEFUN(perror, (s), register CONST char *s)
- {
- int errnum = errno;
- CONST char *colon;
-
- if (s == NULL || *s == '\0')
- s = colon = "";
- else
- colon = ": ";
-
- if (errnum >= 0 && errnum < _sys_nerr)
- (void) fprintf(stderr, "%s%s%s\n", s, colon, _sys_errlist[errnum]);
- else
- (void) fprintf(stderr, "%s%sUnknown error %d\n", s, colon, errnum);
- }
-