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Annotation of 43BSDTahoe/lib/libc/net/herror.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1987 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 the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #if defined(LIBC_SCCS) && !defined(lint)
                     19: static char sccsid[] = "@(#)herror.c   6.3 (Berkeley) 6/27/88";
                     20: #endif /* LIBC_SCCS and not lint */
                     21: 
                     22: #include <sys/types.h>
                     23: #include <sys/uio.h>
                     24: 
                     25: char   *h_errlist[] = {
                     26:        "Error 0",
                     27:        "Unknown host",                         /* 1 HOST_NOT_FOUND */
                     28:        "Host name lookup failure",             /* 2 TRY_AGAIN */
                     29:        "Unknown server error",                 /* 3 NO_RECOVERY */
                     30:        "No address associated with name",      /* 4 NO_ADDRESS */
                     31: };
                     32: int    h_nerr = { sizeof(h_errlist)/sizeof(h_errlist[0]) };
                     33: 
                     34: extern int     h_errno;
                     35: 
                     36: /*
                     37:  * herror --
                     38:  *     print the error indicated by the h_errno value.
                     39:  */
                     40: herror(s)
                     41:        char *s;
                     42: {
                     43:        struct iovec iov[4];
                     44:        register struct iovec *v = iov;
                     45: 
                     46:        if (s && *s) {
                     47:                v->iov_base = s;
                     48:                v->iov_len = strlen(s);
                     49:                v++;
                     50:                v->iov_base = ": ";
                     51:                v->iov_len = 2;
                     52:                v++;
                     53:        }
                     54:        v->iov_base = h_errno < h_nerr ? h_errlist[h_errno] : "Unknown error";
                     55:        v->iov_len = strlen(v->iov_base);
                     56:        v++;
                     57:        v->iov_base = "\n";
                     58:        v->iov_len = 1;
                     59:        writev(2, iov, (v - iov) + 1);
                     60: }

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