* Copyright (C) 1995, 1996 Olaf Kirch <okir@monad.swb.de>
*/
+#include <linux/module.h>
#include <linux/types.h>
-#include <linux/socket.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/pagemap.h>
#include <linux/errno.h>
-#include <linux/in.h>
-#include <linux/net.h>
-#include <net/sock.h>
#include <linux/sunrpc/xdr.h>
#include <linux/sunrpc/msg_prot.h>
return xdr_encode_array(p, string, strlen(string));
}
-u32 *
-xdr_decode_string(u32 *p, char **sp, int *lenp, int maxlen)
-{
- unsigned int len;
- char *string;
-
- if ((len = ntohl(*p++)) > maxlen)
- return NULL;
- if (lenp)
- *lenp = len;
- if ((len % 4) != 0) {
- string = (char *) p;
- } else {
- string = (char *) (p - 1);
- memmove(string, p, len);
- }
- string[len] = '\0';
- *sp = string;
- return p + XDR_QUADLEN(len);
-}
-
u32 *
xdr_decode_string_inplace(u32 *p, char **sp, int *lenp, int maxlen)
{
xdr->buflen += len;
}
-ssize_t
-xdr_partial_copy_from_skb(struct xdr_buf *xdr, unsigned int base,
- skb_reader_t *desc,
- skb_read_actor_t copy_actor)
-{
- struct page **ppage = xdr->pages;
- unsigned int len, pglen = xdr->page_len;
- ssize_t copied = 0;
- int ret;
-
- len = xdr->head[0].iov_len;
- if (base < len) {
- len -= base;
- ret = copy_actor(desc, (char *)xdr->head[0].iov_base + base, len);
- copied += ret;
- if (ret != len || !desc->count)
- goto out;
- base = 0;
- } else
- base -= len;
-
- if (pglen == 0)
- goto copy_tail;
- if (base >= pglen) {
- base -= pglen;
- goto copy_tail;
- }
- if (base || xdr->page_base) {
- pglen -= base;
- base += xdr->page_base;
- ppage += base >> PAGE_CACHE_SHIFT;
- base &= ~PAGE_CACHE_MASK;
- }
- do {
- char *kaddr;
-
- /* ACL likes to be lazy in allocating pages - ACLs
- * are small by default but can get huge. */
- if (unlikely(*ppage == NULL)) {
- *ppage = alloc_page(GFP_ATOMIC);
- if (unlikely(*ppage == NULL)) {
- if (copied == 0)
- copied = -ENOMEM;
- goto out;
- }
- }
-
- len = PAGE_CACHE_SIZE;
- kaddr = kmap_atomic(*ppage, KM_SKB_SUNRPC_DATA);
- if (base) {
- len -= base;
- if (pglen < len)
- len = pglen;
- ret = copy_actor(desc, kaddr + base, len);
- base = 0;
- } else {
- if (pglen < len)
- len = pglen;
- ret = copy_actor(desc, kaddr, len);
- }
- flush_dcache_page(*ppage);
- kunmap_atomic(kaddr, KM_SKB_SUNRPC_DATA);
- copied += ret;
- if (ret != len || !desc->count)
- goto out;
- ppage++;
- } while ((pglen -= len) != 0);
-copy_tail:
- len = xdr->tail[0].iov_len;
- if (base < len)
- copied += copy_actor(desc, (char *)xdr->tail[0].iov_base + base, len - base);
-out:
- return copied;
-}
-
-
-int
-xdr_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen,
- struct xdr_buf *xdr, unsigned int base, int msgflags)
-{
- struct page **ppage = xdr->pages;
- unsigned int len, pglen = xdr->page_len;
- int err, ret = 0;
- ssize_t (*sendpage)(struct socket *, struct page *, int, size_t, int);
-
- len = xdr->head[0].iov_len;
- if (base < len || (addr != NULL && base == 0)) {
- struct kvec iov = {
- .iov_base = xdr->head[0].iov_base + base,
- .iov_len = len - base,
- };
- struct msghdr msg = {
- .msg_name = addr,
- .msg_namelen = addrlen,
- .msg_flags = msgflags,
- };
- if (xdr->len > len)
- msg.msg_flags |= MSG_MORE;
-
- if (iov.iov_len != 0)
- err = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
- else
- err = kernel_sendmsg(sock, &msg, NULL, 0, 0);
- if (ret == 0)
- ret = err;
- else if (err > 0)
- ret += err;
- if (err != iov.iov_len)
- goto out;
- base = 0;
- } else
- base -= len;
-
- if (pglen == 0)
- goto copy_tail;
- if (base >= pglen) {
- base -= pglen;
- goto copy_tail;
- }
- if (base || xdr->page_base) {
- pglen -= base;
- base += xdr->page_base;
- ppage += base >> PAGE_CACHE_SHIFT;
- base &= ~PAGE_CACHE_MASK;
- }
-
- sendpage = sock->ops->sendpage ? : sock_no_sendpage;
- do {
- int flags = msgflags;
-
- len = PAGE_CACHE_SIZE;
- if (base)
- len -= base;
- if (pglen < len)
- len = pglen;
-
- if (pglen != len || xdr->tail[0].iov_len != 0)
- flags |= MSG_MORE;
-
- /* Hmm... We might be dealing with highmem pages */
- if (PageHighMem(*ppage))
- sendpage = sock_no_sendpage;
- err = sendpage(sock, *ppage, base, len, flags);
- if (ret == 0)
- ret = err;
- else if (err > 0)
- ret += err;
- if (err != len)
- goto out;
- base = 0;
- ppage++;
- } while ((pglen -= len) != 0);
-copy_tail:
- len = xdr->tail[0].iov_len;
- if (base < len) {
- struct kvec iov = {
- .iov_base = xdr->tail[0].iov_base + base,
- .iov_len = len - base,
- };
- struct msghdr msg = {
- .msg_flags = msgflags,
- };
- err = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
- if (ret == 0)
- ret = err;
- else if (err > 0)
- ret += err;
- }
-out:
- return ret;
-}
-
/*
* Helper routines for doing 'memmove' like operations on a struct xdr_buf
err = 0;
out:
- if (elem)
- kfree(elem);
+ kfree(elem);
if (ppages)
kunmap(*ppages);
return err;
projects / linux-2.6-omap-h63xx.git / blobdiff