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1a59d1b8e0
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (C) International Business Machines Corp., 2000-2004
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*/
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#include <linux/fs.h>
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#include <linux/slab.h>
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#include "jfs_incore.h"
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#include "jfs_filsys.h"
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#include "jfs_unicode.h"
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#include "jfs_debug.h"
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/*
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* NAME: jfs_strfromUCS()
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*
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* FUNCTION: Convert little-endian unicode string to character string
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*
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*/
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int jfs_strfromUCS_le(char *to, const __le16 * from,
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int len, struct nls_table *codepage)
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{
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int i;
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int outlen = 0;
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static int warn_again = 5; /* Only warn up to 5 times total */
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int warn = !!warn_again; /* once per string */
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if (codepage) {
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for (i = 0; (i < len) && from[i]; i++) {
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int charlen;
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charlen =
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codepage->uni2char(le16_to_cpu(from[i]),
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&to[outlen],
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NLS_MAX_CHARSET_SIZE);
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if (charlen > 0)
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outlen += charlen;
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else
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to[outlen++] = '?';
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}
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} else {
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for (i = 0; (i < len) && from[i]; i++) {
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if (unlikely(le16_to_cpu(from[i]) & 0xff00)) {
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to[i] = '?';
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if (unlikely(warn)) {
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warn--;
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warn_again--;
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printk(KERN_ERR
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"non-latin1 character 0x%x found in JFS file name\n",
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le16_to_cpu(from[i]));
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printk(KERN_ERR
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"mount with iocharset=utf8 to access\n");
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}
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}
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else
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to[i] = (char) (le16_to_cpu(from[i]));
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}
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outlen = i;
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}
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to[outlen] = 0;
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return outlen;
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}
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/*
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* NAME: jfs_strtoUCS()
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*
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* FUNCTION: Convert character string to unicode string
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*
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*/
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static int jfs_strtoUCS(wchar_t * to, const unsigned char *from, int len,
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struct nls_table *codepage)
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{
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int charlen;
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int i;
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if (codepage) {
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for (i = 0; len && *from; i++, from += charlen, len -= charlen)
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{
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charlen = codepage->char2uni(from, len, &to[i]);
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if (charlen < 1) {
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jfs_err("jfs_strtoUCS: char2uni returned %d.",
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charlen);
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jfs_err("charset = %s, char = 0x%x",
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codepage->charset, *from);
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return charlen;
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}
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}
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} else {
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for (i = 0; (i < len) && from[i]; i++)
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to[i] = (wchar_t) from[i];
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}
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to[i] = 0;
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return i;
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}
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/*
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* NAME: get_UCSname()
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*
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* FUNCTION: Allocate and translate to unicode string
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*
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*/
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int get_UCSname(struct component_name * uniName, struct dentry *dentry)
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{
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struct nls_table *nls_tab = JFS_SBI(dentry->d_sb)->nls_tab;
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int length = dentry->d_name.len;
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if (length > JFS_NAME_MAX)
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return -ENAMETOOLONG;
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uniName->name =
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kmalloc_array(length + 1, sizeof(wchar_t), GFP_NOFS);
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if (uniName->name == NULL)
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return -ENOMEM;
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uniName->namlen = jfs_strtoUCS(uniName->name, dentry->d_name.name,
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length, nls_tab);
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if (uniName->namlen < 0) {
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kfree(uniName->name);
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return uniName->namlen;
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}
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return 0;
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}
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