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      1 /*
      2  * CDDL HEADER START
      3  *
      4  * The contents of this file are subject to the terms of the
      5  * Common Development and Distribution License, Version 1.0 only
      6  * (the "License").  You may not use this file except in compliance
      7  * with the License.
      8  *
      9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  * or http://www.opensolaris.org/os/licensing.
     11  * See the License for the specific language governing permissions
     12  * and limitations under the License.
     13  *
     14  * When distributing Covered Code, include this CDDL HEADER in each
     15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  * If applicable, add the following below this CDDL HEADER, with the
     17  * fields enclosed by brackets "[]" replaced with your own identifying
     18  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  *
     20  * CDDL HEADER END
     21  */
     22 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     23 	  /* from UCB 4.2 83/06/30 */
     24 /*
     25  * Print the error indicated
     26  * in the cerror cell.
     27  */
     28 #include <sys/types.h>
     29 #include <sys/uio.h>
     30 
     31 extern	int errno;
     32 extern	int sys_nerr;
     33 extern	char *sys_errlist[];
     34 extern	int strlen();
     35 extern	int writev();
     36 
     37 void
     38 _perror(s)
     39 	char *s;
     40 {
     41 	struct iovec iov[4];
     42 	register struct iovec *v = iov;
     43 
     44 	if (s && *s) {
     45 		v->iov_base = s;
     46 		v->iov_len = strlen(s);
     47 		v++;
     48 		v->iov_base = ": ";
     49 		v->iov_len = 2;
     50 		v++;
     51 	}
     52 	v->iov_base =
     53 	    (unsigned)errno < sys_nerr ? sys_errlist[errno] : "Unknown error";
     54 	v->iov_len = strlen(v->iov_base);
     55 	v++;
     56 	v->iov_base = "\n";
     57 	v->iov_len = 1;
     58 	writev(2, iov, (v - iov) + 1);
     59 }
     60