diff options
Diffstat (limited to 'iov.h')
| -rw-r--r-- | iov.h | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -70,6 +70,18 @@ struct iov_tail { #define IOV_TAIL(iov_, cnt_, off_) \ (struct iov_tail){ .iov = (iov_), .cnt = (cnt_), .off = (off_) } +/** + * IOV_TAIL_FROM_BUF() - Create a new IOV tail from a buffer + * @buf_: Buffer address to use in the iovec + * @len_: Buffer size + * @off_: Byte offset in the buffer where the tail begins + */ +#define IOV_TAIL_FROM_BUF(buf_, len_, off_) \ + IOV_TAIL((&(const struct iovec){ .iov_base = (buf_), \ + .iov_len = (len_) }), \ + 1, \ + (off_)) + bool iov_tail_prune(struct iov_tail *tail); size_t iov_tail_size(struct iov_tail *tail); bool iov_drop_header(struct iov_tail *tail, size_t len); @@ -114,4 +126,12 @@ ssize_t iov_tail_clone(struct iovec *dst_iov, size_t dst_iov_cnt, ((__typeof__(var_) *)(iov_remove_header_((tail_), &(var_), \ sizeof(var_), __alignof__(var_)))) +/** IOV_DROP_HEADER() - Remove a typed header from an IOV tail + * @tail_: IOV tail to remove header from (modified) + * @type_: Data type of the header to remove + * + * Return: true if the tail still contains any bytes, otherwise false + */ +#define IOV_DROP_HEADER(tail_, type_) iov_drop_header((tail_), sizeof(type_)) + #endif /* IOVEC_H */ |