linux/net/9p/error.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Error string handling
 *
 * Plan 9 uses error strings, Unix uses error numbers.  These functions
 * try to help manage that and provide for dynamically adding error
 * mappings.
 *
 *  Copyright (C) 2004 by Eric Van Hensbergen <[email protected]>
 *  Copyright (C) 2002 by Ron Minnich <[email protected]>
 */

#define pr_fmt(fmt) …

#include <linux/module.h>
#include <linux/list.h>
#include <linux/jhash.h>
#include <linux/errno.h>
#include <net/9p/9p.h>

/**
 * struct errormap - map string errors from Plan 9 to Linux numeric ids
 * @name: string sent over 9P
 * @val: numeric id most closely representing @name
 * @namelen: length of string
 * @list: hash-table list for string lookup
 */
struct errormap { … };

#define ERRHASHSZ …
static struct hlist_head hash_errmap[ERRHASHSZ];

/* FixMe - reduce to a reasonable size */
static struct errormap errmap[] = …;

/**
 * p9_error_init - preload mappings into hash list
 *
 */

int p9_error_init(void)
{ … }
EXPORT_SYMBOL(…);

/**
 * p9_errstr2errno - convert error string to error number
 * @errstr: error string
 * @len: length of error string
 *
 */

int p9_errstr2errno(char *errstr, int len)
{ … }
EXPORT_SYMBOL(…);