diff options
Diffstat (limited to 'include/linux/uio.h')
| -rw-r--r-- | include/linux/uio.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/uio.h b/include/linux/uio.h index 290fbf0b6b8a..1c5e453f7ea9 100644 --- a/include/linux/uio.h +++ b/include/linux/uio.h @@ -31,6 +31,7 @@ struct iov_iter { size_t count; union { const struct iovec *iov; + const struct kvec *kvec; const struct bio_vec *bvec; }; unsigned long nr_segs; @@ -80,9 +81,15 @@ size_t copy_page_to_iter(struct page *page, size_t offset, size_t bytes, struct iov_iter *i); size_t copy_page_from_iter(struct page *page, size_t offset, size_t bytes, struct iov_iter *i); +size_t copy_to_iter(void *addr, size_t bytes, struct iov_iter *i); +size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i); +size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i); +size_t iov_iter_zero(size_t bytes, struct iov_iter *); unsigned long iov_iter_alignment(const struct iov_iter *i); void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov, unsigned long nr_segs, size_t count); +void iov_iter_kvec(struct iov_iter *i, int direction, const struct kvec *iov, + unsigned long nr_segs, size_t count); ssize_t iov_iter_get_pages(struct iov_iter *i, struct page **pages, size_t maxsize, unsigned maxpages, size_t *start); ssize_t iov_iter_get_pages_alloc(struct iov_iter *i, struct page ***pages, @@ -94,6 +101,11 @@ static inline size_t iov_iter_count(struct iov_iter *i) return i->count; } +static inline bool iter_is_iovec(struct iov_iter *i) +{ + return !(i->type & (ITER_BVEC | ITER_KVEC)); +} + /* * Cap the iov_iter by given limit; note that the second argument is * *not* the new size - it's upper limit for such. Passing it a value @@ -120,9 +132,10 @@ static inline void iov_iter_reexpand(struct iov_iter *i, size_t count) { i->count = count; } +size_t csum_and_copy_to_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i); +size_t csum_and_copy_from_iter(void *addr, size_t bytes, __wsum *csum, struct iov_iter *i); int memcpy_fromiovec(unsigned char *kdata, struct iovec *iov, int len); -int memcpy_toiovec(struct iovec *iov, unsigned char *kdata, int len); int memcpy_fromiovecend(unsigned char *kdata, const struct iovec *iov, int offset, int len); int memcpy_toiovecend(const struct iovec *v, unsigned char *kdata, |