32 lines
742 B
C
32 lines
742 B
C
#ifndef KERNEL_IOVEC_H_
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#define KERNEL_IOVEC_H_
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#include <mango/types.h>
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#include <stddef.h>
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struct iovec_iterator {
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/* if this is set, we are iterating over a list of iovecs stored in
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* userspace, and must go through this region to retrieve the data. */
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struct vm_region *it_region;
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const struct iovec *it_vecs;
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size_t it_nr_vecs;
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size_t it_vec_ptr;
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virt_addr_t it_base;
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size_t it_len;
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};
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extern void iovec_iterator_begin(
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struct iovec_iterator *it,
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const struct iovec *vecs,
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size_t nr_vecs);
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extern void iovec_iterator_begin_user(
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struct iovec_iterator *it,
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struct vm_region *address_space,
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const struct iovec *vecs,
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size_t nr_vecs);
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extern void iovec_iterator_seek(struct iovec_iterator *it, size_t nr_bytes);
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#endif
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