fdt_strerror.c

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// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
/*
 * libfdt - Flat Device Tree manipulation
 * Copyright (C) 2006 David Gibson, IBM Corporation.
 *     EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
#include "libfdt_env.h"
 
#include <fdt.h>
#include <libfdt.h>
 
#include "libfdt_internal.h"
 
struct fdt_errtabent {
    const char *str;
};
 
#define FDT_ERRTABENT(val) \
    [(val)] = { .str = #val, }
 
static struct fdt_errtabent fdt_errtable[] = {
    FDT_ERRTABENT(FDT_ERR_NOTFOUND),
    FDT_ERRTABENT(FDT_ERR_EXISTS),
    FDT_ERRTABENT(FDT_ERR_NOSPACE),
 
    FDT_ERRTABENT(FDT_ERR_BADOFFSET),
    FDT_ERRTABENT(FDT_ERR_BADPATH),
    FDT_ERRTABENT(FDT_ERR_BADPHANDLE),
    FDT_ERRTABENT(FDT_ERR_BADSTATE),
 
    FDT_ERRTABENT(FDT_ERR_TRUNCATED),
    FDT_ERRTABENT(FDT_ERR_BADMAGIC),
    FDT_ERRTABENT(FDT_ERR_BADVERSION),
    FDT_ERRTABENT(FDT_ERR_BADSTRUCTURE),
    FDT_ERRTABENT(FDT_ERR_BADLAYOUT),
    FDT_ERRTABENT(FDT_ERR_INTERNAL),
    FDT_ERRTABENT(FDT_ERR_BADNCELLS),
    FDT_ERRTABENT(FDT_ERR_BADVALUE),
    FDT_ERRTABENT(FDT_ERR_BADOVERLAY),
    FDT_ERRTABENT(FDT_ERR_NOPHANDLES),
    FDT_ERRTABENT(FDT_ERR_BADFLAGS),
    FDT_ERRTABENT(FDT_ERR_ALIGNMENT),
};
#define FDT_ERRTABSIZE  ((int)(sizeof(fdt_errtable) / sizeof(fdt_errtable[0])))
 
const char *fdt_strerror(int errval)
{
    if (errval > 0)
        return "<valid offset/length>";
    else if (errval == 0)
        return "<no error>";
    else if (-errval < FDT_ERRTABSIZE) {
        const char *s = fdt_errtable[-errval].str;
 
        if (s)
            return s;
    }
 
    return "<unknown error>";
}