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SUNRPC: Clean up argument types in xdr.c

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Converts various integer buffer offsets and sizes to unsigned integer.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust 2006-08-31 15:09:19 -04:00
parent eb5f8545ff
commit 1e78957e0a
2 changed files with 49 additions and 49 deletions
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12
include/linux/sunrpc/xdr.h
View File

@ -139,10 +139,10 @@ xdr_adjust_iovec(struct kvec *iov, __be32 *p)
*/
extern void xdr_shift_buf(struct xdr_buf *, size_t);
extern void xdr_buf_from_iov(struct kvec *, struct xdr_buf *);
extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, int, int);
extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, int);
extern int read_bytes_from_xdr_buf(struct xdr_buf *, int, void *, int);
extern int write_bytes_to_xdr_buf(struct xdr_buf *, int, void *, int);
extern int xdr_buf_subsegment(struct xdr_buf *, struct xdr_buf *, unsigned int, unsigned int);
extern int xdr_buf_read_netobj(struct xdr_buf *, struct xdr_netobj *, unsigned int);
extern int read_bytes_from_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
extern int write_bytes_to_xdr_buf(struct xdr_buf *, unsigned int, void *, unsigned int);
/*
* Helper structure for copying from an sk_buff.
@ -160,8 +160,8 @@ extern int csum_partial_copy_to_xdr(struct xdr_buf *, struct sk_buff *);
extern ssize_t xdr_partial_copy_from_skb(struct xdr_buf *, unsigned int,
skb_reader_t *, skb_read_actor_t);
extern int xdr_encode_word(struct xdr_buf *, int, u32);
extern int xdr_decode_word(struct xdr_buf *, int, u32 *);
extern int xdr_encode_word(struct xdr_buf *, unsigned int, u32);
extern int xdr_decode_word(struct xdr_buf *, unsigned int, u32 *);
struct xdr_array2_desc;
typedef int (*xdr_xcode_elem_t)(struct xdr_array2_desc *desc, void *elem);

86
net/sunrpc/xdr.c
View File

@ -640,41 +640,30 @@ xdr_buf_from_iov(struct kvec *iov, struct xdr_buf *buf)
buf->buflen = buf->len = iov->iov_len;
}
/* Sets subiov to the intersection of iov with the buffer of length len
* starting base bytes after iov. Indicates empty intersection by setting
* length of subiov to zero. Decrements len by length of subiov, sets base
* to zero (or decrements it by length of iov if subiov is empty). */
static void
iov_subsegment(struct kvec *iov, struct kvec *subiov, int *base, int *len)
{
if (*base > iov->iov_len) {
subiov->iov_base = NULL;
subiov->iov_len = 0;
*base -= iov->iov_len;
} else {
subiov->iov_base = iov->iov_base + *base;
subiov->iov_len = min(*len, (int)iov->iov_len - *base);
*base = 0;
}
*len -= subiov->iov_len;
}
/* Sets subbuf to the portion of buf of length len beginning base bytes
* from the start of buf. Returns -1 if base of length are out of bounds. */
int
xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
int base, int len)
unsigned int base, unsigned int len)
{
int i;
subbuf->buflen = subbuf->len = len;
iov_subsegment(buf->head, subbuf->head, &base, &len);
if (base < buf->head[0].iov_len) {
subbuf->head[0].iov_base = buf->head[0].iov_base + base;
subbuf->head[0].iov_len = min_t(unsigned int, len,
buf->head[0].iov_len - base);
len -= subbuf->head[0].iov_len;
base = 0;
} else {
subbuf->head[0].iov_base = NULL;
subbuf->head[0].iov_len = 0;
base -= buf->head[0].iov_len;
}
if (base < buf->page_len) {
i = (base + buf->page_base) >> PAGE_CACHE_SHIFT;
subbuf->pages = &buf->pages[i];
subbuf->page_base = (base + buf->page_base) & ~PAGE_CACHE_MASK;
subbuf->page_len = min((int)buf->page_len - base, len);
subbuf->page_len = min(buf->page_len - base, len);
base += buf->page_base;
subbuf->page_base = base & ~PAGE_CACHE_MASK;
subbuf->pages = &buf->pages[base >> PAGE_CACHE_SHIFT];
len -= subbuf->page_len;
base = 0;
} else {
@ -682,7 +671,18 @@ xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
subbuf->page_len = 0;
}
iov_subsegment(buf->tail, subbuf->tail, &base, &len);
if (base < buf->tail[0].iov_len) {
subbuf->tail[0].iov_base = buf->tail[0].iov_base + base;
subbuf->tail[0].iov_len = min_t(unsigned int, len,
buf->tail[0].iov_len - base);
len -= subbuf->tail[0].iov_len;
base = 0;
} else {
subbuf->tail[0].iov_base = NULL;
subbuf->tail[0].iov_len = 0;
base -= buf->tail[0].iov_len;
}
if (base || len)
return -1;
return 0;
@ -690,25 +690,25 @@ xdr_buf_subsegment(struct xdr_buf *buf, struct xdr_buf *subbuf,
/* obj is assumed to point to allocated memory of size at least len: */
int
read_bytes_from_xdr_buf(struct xdr_buf *buf, int base, void *obj, int len)
read_bytes_from_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, unsigned int len)
{
struct xdr_buf subbuf;
int this_len;
unsigned int this_len;
int status;
status = xdr_buf_subsegment(buf, &subbuf, base, len);
if (status)
goto out;
this_len = min(len, (int)subbuf.head[0].iov_len);
this_len = min_t(unsigned int, len, subbuf.head[0].iov_len);
memcpy(obj, subbuf.head[0].iov_base, this_len);
len -= this_len;
obj += this_len;
this_len = min(len, (int)subbuf.page_len);
this_len = min_t(unsigned int, len, subbuf.page_len);
if (this_len)
_copy_from_pages(obj, subbuf.pages, subbuf.page_base, this_len);
len -= this_len;
obj += this_len;
this_len = min(len, (int)subbuf.tail[0].iov_len);
this_len = min_t(unsigned int, len, subbuf.tail[0].iov_len);
memcpy(obj, subbuf.tail[0].iov_base, this_len);
out:
return status;
@ -716,32 +716,32 @@ out:
/* obj is assumed to point to allocated memory of size at least len: */
int
write_bytes_to_xdr_buf(struct xdr_buf *buf, int base, void *obj, int len)
write_bytes_to_xdr_buf(struct xdr_buf *buf, unsigned int base, void *obj, unsigned int len)
{
struct xdr_buf subbuf;
int this_len;
unsigned int this_len;
int status;
status = xdr_buf_subsegment(buf, &subbuf, base, len);
if (status)
goto out;
this_len = min(len, (int)subbuf.head[0].iov_len);
this_len = min_t(unsigned int, len, subbuf.head[0].iov_len);
memcpy(subbuf.head[0].iov_base, obj, this_len);
len -= this_len;
obj += this_len;
this_len = min(len, (int)subbuf.page_len);
this_len = min_t(unsigned int, len, subbuf.page_len);
if (this_len)
_copy_to_pages(subbuf.pages, subbuf.page_base, obj, this_len);
len -= this_len;
obj += this_len;
this_len = min(len, (int)subbuf.tail[0].iov_len);
this_len = min_t(unsigned int, len, subbuf.tail[0].iov_len);
memcpy(subbuf.tail[0].iov_base, obj, this_len);
out:
return status;
}
int
xdr_decode_word(struct xdr_buf *buf, int base, u32 *obj)
xdr_decode_word(struct xdr_buf *buf, unsigned int base, u32 *obj)
{
__be32 raw;
int status;
@ -754,7 +754,7 @@ xdr_decode_word(struct xdr_buf *buf, int base, u32 *obj)
}
int
xdr_encode_word(struct xdr_buf *buf, int base, u32 obj)
xdr_encode_word(struct xdr_buf *buf, unsigned int base, u32 obj)
{
__be32 raw = htonl(obj);
@ -766,10 +766,10 @@ xdr_encode_word(struct xdr_buf *buf, int base, u32 obj)
* try to find space for it at the end of the tail, copy it there, and
* set obj to point to it. */
int
xdr_buf_read_netobj(struct xdr_buf *buf, struct xdr_netobj *obj, int offset)
xdr_buf_read_netobj(struct xdr_buf *buf, struct xdr_netobj *obj, unsigned int offset)
{
u32 tail_offset = buf->head[0].iov_len + buf->page_len;
u32 obj_end_offset;
unsigned int tail_offset = buf->head[0].iov_len + buf->page_len;
unsigned int obj_end_offset;
if (xdr_decode_word(buf, offset, &obj->len))
goto out;