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Annotation of 43BSDReno/lib/libc/gen/perror.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1988 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #if defined(LIBC_SCCS) && !defined(lint)
                     21: static char sccsid[] = "@(#)perror.c   5.9 (Berkeley) 6/1/90";
                     22: #endif /* LIBC_SCCS and not lint */
                     23: 
                     24: #include <sys/types.h>
                     25: #include <sys/uio.h>
                     26: 
                     27: perror(s)
                     28:        char *s;
                     29: {
                     30:        extern int errno;
                     31:        register struct iovec *v;
                     32:        struct iovec iov[4];
                     33:        char *strerror();
                     34: 
                     35:        v = iov;
                     36:        if (s && *s) {
                     37:                v->iov_base = s;
                     38:                v->iov_len = strlen(s);
                     39:                v++;
                     40:                v->iov_base = ": ";
                     41:                v->iov_len = 2;
                     42:                v++;
                     43:        }
                     44:        v->iov_base = strerror(errno);
                     45:        v->iov_len = strlen(v->iov_base);
                     46:        v++;
                     47:        v->iov_base = "\n";
                     48:        v->iov_len = 1;
                     49:        (void)writev(2, iov, (v - iov) + 1);
                     50: }

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