diff options
Diffstat (limited to 'lib/libc/stdio/perror.c')
| -rw-r--r-- | lib/libc/stdio/perror.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/lib/libc/stdio/perror.c b/lib/libc/stdio/perror.c new file mode 100644 index 00000000000..3e2ff5ff2b6 --- /dev/null +++ b/lib/libc/stdio/perror.c @@ -0,0 +1,81 @@ +/* $NetBSD: perror.c,v 1.8 1995/02/02 02:10:11 jtc Exp $ */ + +/* + * Copyright (c) 1988, 1993 + * The 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) +#if 0 +static char sccsid[] = "@(#)perror.c 8.1 (Berkeley) 6/4/93"; +#endif +static char rcsid[] = "$NetBSD: perror.c,v 1.8 1995/02/02 02:10:11 jtc Exp $"; +#endif /* LIBC_SCCS and not lint */ + +#include <sys/types.h> +#include <sys/uio.h> +#include <unistd.h> +#include <errno.h> +#include <stdio.h> +#include <string.h> +#include <limits.h> +/* + * 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(). + */ + +extern char *__strerror __P((int , char *)); + +void +perror(s) + const char *s; +{ + register struct iovec *v; + struct iovec iov[4]; + static char buf[NL_TEXTMAX]; + + v = iov; + if (s && *s) { + v->iov_base = (char *)s; + v->iov_len = strlen(s); + v++; + v->iov_base = ": "; + v->iov_len = 2; + v++; + } + v->iov_base = __strerror(errno, buf); + v->iov_len = strlen(v->iov_base); + v++; + v->iov_base = "\n"; + v->iov_len = 1; + (void)writev(STDERR_FILENO, iov, (v - iov) + 1); +} |