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fdt_strerror.c revision 1.1.1.2 
      1 /*	$NetBSD: fdt_strerror.c,v 1.1.1.2 2017/06/08 15:53:12 skrll Exp $	*/
      2 
      3 /*
      4  * libfdt - Flat Device Tree manipulation
      5  * Copyright (C) 2006 David Gibson, IBM Corporation.
      6  *
      7  * libfdt is dual licensed: you can use it either under the terms of
      8  * the GPL, or the BSD license, at your option.
      9  *
     10  *  a) This library is free software; you can redistribute it and/or
     11  *     modify it under the terms of the GNU General Public License as
     12  *     published by the Free Software Foundation; either version 2 of the
     13  *     License, or (at your option) any later version.
     14  *
     15  *     This library is distributed in the hope that it will be useful,
     16  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
     17  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     18  *     GNU General Public License for more details.
     19  *
     20  *     You should have received a copy of the GNU General Public
     21  *     License along with this library; if not, write to the Free
     22  *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
     23  *     MA 02110-1301 USA
     24  *
     25  * Alternatively,
     26  *
     27  *  b) Redistribution and use in source and binary forms, with or
     28  *     without modification, are permitted provided that the following
     29  *     conditions are met:
     30  *
     31  *     1. Redistributions of source code must retain the above
     32  *        copyright notice, this list of conditions and the following
     33  *        disclaimer.
     34  *     2. Redistributions in binary form must reproduce the above
     35  *        copyright notice, this list of conditions and the following
     36  *        disclaimer in the documentation and/or other materials
     37  *        provided with the distribution.
     38  *
     39  *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
     40  *     CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
     41  *     INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
     42  *     MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     43  *     DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
     44  *     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     45  *     SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     46  *     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     47  *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     48  *     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     49  *     CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
     50  *     OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
     51  *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     52  */
     53 #include "libfdt_env.h"
     54 
     55 #include <fdt.h>
     56 #include <libfdt.h>
     57 
     58 #include "libfdt_internal.h"
     59 
     60 struct fdt_errtabent {
     61 	const char *str;
     62 };
     63 
     64 #define FDT_ERRTABENT(val) \
     65 	[(val)] = { .str = #val, }
     66 
     67 static struct fdt_errtabent fdt_errtable[] = {
     68 	FDT_ERRTABENT(FDT_ERR_NOTFOUND),
     69 	FDT_ERRTABENT(FDT_ERR_EXISTS),
     70 	FDT_ERRTABENT(FDT_ERR_NOSPACE),
     71 
     72 	FDT_ERRTABENT(FDT_ERR_BADOFFSET),
     73 	FDT_ERRTABENT(FDT_ERR_BADPATH),
     74 	FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
     75 	FDT_ERRTABENT(FDT_ERR_BADSTATE),
     76 
     77 	FDT_ERRTABENT(FDT_ERR_TRUNCATED),
     78 	FDT_ERRTABENT(FDT_ERR_BADMAGIC),
     79 	FDT_ERRTABENT(FDT_ERR_BADVERSION),
     80 	FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
     81 	FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
     82 	FDT_ERRTABENT(FDT_ERR_INTERNAL),
     83 	FDT_ERRTABENT(FDT_ERR_BADNCELLS),
     84 	FDT_ERRTABENT(FDT_ERR_BADVALUE),
     85 	FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
     86 	FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
     87 };
     88 #define FDT_ERRTABSIZE	(sizeof(fdt_errtable) / sizeof(fdt_errtable[0]))
     89 
     90 const char *fdt_strerror(int errval)
     91 {
     92 	if (errval > 0)
     93 		return "<valid offset/length>";
     94 	else if (errval == 0)
     95 		return "<no error>";
     96 	else if (errval > -FDT_ERRTABSIZE) {
     97 		const char *s = fdt_errtable[-errval].str;
     98 
     99 		if (s)
    100 			return s;
    101 	}
    102 
    103 	return "<unknown error>";
    104 }
    105