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Commit 34f953dd authored by marcin.slusarz@gmail.com's avatar marcin.slusarz@gmail.com Committed by Jan Kara
Browse files

udf: udf_CS0toNLS cleanup 



- fix error handling - always zero output variable
- don't zero explicitely fields zeroed by memset
- mark "in" paramater as const

Signed-off-by: default avatarMarcin Slusarz <marcin.slusarz@gmail.com>
Signed-off-by: default avatarJan Kara <jack@suse.cz>
parent 6305a0a9

fs/udf/unicode.c

+8 −11
Original line number Diff line number Diff line
@@ -249,35 +249,32 @@ static int udf_UTF8toCS0(dstring *ocu, struct ustr *utf, int length) 
}



static int udf_CS0toNLS(struct nls_table *nls, struct ustr *utf_o,

			struct ustr *ocu_i)

			const struct ustr *ocu_i)

{

	uint8_t *ocu;

	uint32_t c;

	const uint8_t *ocu;

	uint8_t cmp_id, ocu_len;

	int i;



	ocu = ocu_i->u_name;



	ocu_len = ocu_i->u_len;

	cmp_id = ocu_i->u_cmpID;

	utf_o->u_len = 0;



	if (ocu_len == 0) {

		memset(utf_o, 0, sizeof(struct ustr));

		utf_o->u_cmpID = 0;

		utf_o->u_len = 0;

		return 0;

	}



	if ((cmp_id != 8) && (cmp_id != 16)) {

	cmp_id = ocu_i->u_cmpID;

	if (cmp_id != 8 && cmp_id != 16) {

		memset(utf_o, 0, sizeof(struct ustr));

		printk(KERN_ERR "udf: unknown compression code (%d) stri=%s\n",

		       cmp_id, ocu_i->u_name);

		return 0;

	}



	ocu = ocu_i->u_name;

	utf_o->u_len = 0;

	for (i = 0; (i < ocu_len) && (utf_o->u_len <= (UDF_NAME_LEN - 3));) {

		/* Expand OSTA compressed Unicode to Unicode */

		c = ocu[i++];

		uint32_t c = ocu[i++];

		if (cmp_id == 16)

			c = (c << 8) | ocu[i++];