From b4687da7fc5f741af7fee9b0248a2cf2ad9c4478 Mon Sep 17 00:00:00 2001 From: Chuck Lever Date: Tue, 21 Sep 2010 16:55:48 -0400 Subject: SUNRPC: Refactor logic to NUL-terminate strings in pages Clean up: Introduce a helper to '\0'-terminate XDR strings that are placed in a page in the page cache. Signed-off-by: Chuck Lever Signed-off-by: Trond Myklebust --- net/sunrpc/xdr.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) (limited to 'net/sunrpc/xdr.c') diff --git a/net/sunrpc/xdr.c b/net/sunrpc/xdr.c index 3bbef7f..e0725d9 100644 --- a/net/sunrpc/xdr.c +++ b/net/sunrpc/xdr.c @@ -111,6 +111,23 @@ xdr_decode_string_inplace(__be32 *p, char **sp, } EXPORT_SYMBOL_GPL(xdr_decode_string_inplace); +/** + * xdr_terminate_string - '\0'-terminate a string residing in an xdr_buf + * @buf: XDR buffer where string resides + * @len: length of string, in bytes + * + */ +void +xdr_terminate_string(struct xdr_buf *buf, const u32 len) +{ + char *kaddr; + + kaddr = kmap_atomic(buf->pages[0], KM_USER0); + kaddr[buf->page_base + len] = '\0'; + kunmap_atomic(kaddr, KM_USER0); +} +EXPORT_SYMBOL(xdr_terminate_string); + void xdr_encode_pages(struct xdr_buf *xdr, struct page **pages, unsigned int base, unsigned int len) -- cgit v1.1