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File: [Development] / linux-2.6-xfs / fs / isofs / joliet.c (download)

Revision 1.5, Wed Sep 12 17:09:56 2007 UTC (10 years, 1 month ago) by tes.longdrop.melbourne.sgi.com
Branch: MAIN
CVS Tags: HEAD
Changes since 1.4: +4 -6 lines 

Update 2.6.x-xfs to 2.6.23-rc4.

Also update fs/xfs with external mainline changes.
There were 12 such missing commits that I detected:

--------
commit ad690ef9e690f6c31f7d310b09ef1314bcec9033
Author: Al Viro <viro@ftp.linux.org.uk>
    xfs ioctl __user annotations

commit 20c2df83d25c6a95affe6157a4c9cac4cf5ffaac
Author: Paul Mundt <lethal@linux-sh.org>
    mm: Remove slab destructors from kmem_cache_create().

commit d0217ac04ca6591841e5665f518e38064f4e65bd
Author: Nick Piggin <npiggin@suse.de>
    mm: fault feedback #1

commit 54cb8821de07f2ffcd28c380ce9b93d5784b40d7
Author: Nick Piggin <npiggin@suse.de>
    mm: merge populate and nopage into fault (fixes nonlinear)

commit d00806b183152af6d24f46f0c33f14162ca1262a
Author: Nick Piggin <npiggin@suse.de>
    mm: fix fault vs invalidate race for linear mappings

commit a569425512253992cc64ebf8b6d00a62f986db3e
Author: Christoph Hellwig <hch@infradead.org>
    knfsd: exportfs: add exportfs.h header

commit 831441862956fffa17b9801db37e6ea1650b0f69
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Freezer: make kernel threads nonfreezable by default

commit 8e1f936b73150f5095448a0fee6d4f30a1f9001d
Author: Rusty Russell <rusty@rustcorp.com.au>
    mm: clean up and kernelify shrinker registration

commit 5ffc4ef45b3b0a57872f631b4e4ceb8ace0d7496
Author: Jens Axboe <jens.axboe@oracle.com>
    sendfile: remove .sendfile from filesystems that use generic_file_sendfile()

commit 8bb7844286fb8c9fce6f65d8288aeb09d03a5e0d
Author: Rafael J. Wysocki <rjw@sisk.pl>
    Add suspend-related notifications for CPU hotplug

commit 59c51591a0ac7568824f541f57de967e88adaa07
Author: Michael Opdenacker <michael@free-electrons.com>
    Fix occurrences of "the the "

commit 0ceb331433e8aad9c5f441a965d7c681f8b9046f
Author: Dmitriy Monakhov <dmonakhov@openvz.org>
    mm: move common segment checks to separate helper function
--------
Merge of 2.6.x-xfs-melb:linux:29656b by kenmcd.

/*
 *  linux/fs/isofs/joliet.c
 *
 *  (C) 1996 Gordon Chaffee
 *
 *  Joliet: Microsoft's Unicode extensions to iso9660
 */

#include <linux/types.h>
#include <linux/nls.h>
#include "isofs.h"

/*
 * Convert Unicode 16 to UTF-8 or ASCII.
 */
static int
uni16_to_x8(unsigned char *ascii, __be16 *uni, int len, struct nls_table *nls)
{
	__be16 *ip, ch;
	unsigned char *op;

	ip = uni;
	op = ascii;

	while ((ch = get_unaligned(ip)) && len) {
		int llen;
		llen = nls->uni2char(be16_to_cpu(ch), op, NLS_MAX_CHARSET_SIZE);
		if (llen > 0)
			op += llen;
		else
			*op++ = '?';
		ip++;

		len--;
	}
	*op = 0;
	return (op - ascii);
}

/* Convert big endian wide character string to utf8 */
static int
wcsntombs_be(__u8 *s, const __u8 *pwcs, int inlen, int maxlen)
{
	const __u8 *ip;
	__u8 *op;
	int size;
	__u16 c;

	op = s;
	ip = pwcs;
	while ((*ip || ip[1]) && (maxlen > 0) && (inlen > 0)) {
		c = (*ip << 8) | ip[1];
		if (c > 0x7f) {
			size = utf8_wctomb(op, c, maxlen);
			if (size == -1) {
				/* Ignore character and move on */
				maxlen--;
			} else {
				op += size;
				maxlen -= size;
			}
		} else {
			*op++ = (__u8) c;
		}
		ip += 2;
		inlen--;
	}
	return (op - s);
}

int
get_joliet_filename(struct iso_directory_record * de, unsigned char *outname, struct inode * inode)
{
	unsigned char utf8;
	struct nls_table *nls;
	unsigned char len = 0;

	utf8 = ISOFS_SB(inode->i_sb)->s_utf8;
	nls = ISOFS_SB(inode->i_sb)->s_nls_iocharset;

	if (utf8) {
		len = wcsntombs_be(outname, de->name,
				de->name_len[0] >> 1, PAGE_SIZE);
	} else {
		len = uni16_to_x8(outname, (__be16 *) de->name,
				de->name_len[0] >> 1, nls);
	}
	if ((len > 2) && (outname[len-2] == ';') && (outname[len-1] == '1'))
		len -= 2;

	/*
	 * Windows doesn't like periods at the end of a name,
	 * so neither do we
	 */
	while (len >= 2 && (outname[len-1] == '.'))
		len--;

	return len;
}