Lines Matching +full:no +full:- +full:can +full:- +full:fd

1 /* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR MIT) */
10  * This program is free software; you can redistribute it and/or
28  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
51  * considered opaque to userspace, with one exception: if no grant
54  * with userspace APIs that expect a file descriptor that can be
91  * to @vaddr. This can be used to perform a munmap(), followed by an
92  * UNMAP_GRANT_REF ioctl, where no state about the offset is retained by
99  *      contiguously-allocated range at once, and not any subrange thereof.
130  * Sets up an unmap notification within the page, so that the other side can do
131  * cleanup if this side crashes. Required to implement cross-domain robust
145 	 * be cleared. Otherwise, it can be any byte in the page whose
173  * The copy is split into @count @segments, each of which can copy
180  * The local buffer may cross a Xen page boundary -- the driver will
191  * If -1 is returned, the status of all segments is undefined.
226  * Create a dma-buf [1] from grant references @refs of count @count provided
229  * By default dma-buf is backed by system memory pages, but by providing
230  * one of the GNTDEV_DMA_FLAG_XXX flags it can also be created as
231  * a DMA write-combine or coherent buffer, e.g. allocated with dma_alloc_wc/
234  * Returns 0 if dma-buf was successfully created and the corresponding
235  * dma-buf's file descriptor is returned in @fd.
237  * [1] Documentation/driver-api/dma-buf.rst
245 	/* Specific options for this dma-buf: see GNTDEV_DMA_FLAG_XXX. */
250 	/* File descriptor of the dma-buf. */
251 	__u32 fd;  member
260  * This will block until the dma-buf with the file descriptor @fd is
265  * then -ETIMEDOUT error is returned.
266  * If the buffer with the file descriptor @fd does not exist or has already
267  * been released, then -ENOENT is returned. For valid file descriptors
275 	__u32 fd;  member
280  * Import a dma-buf with file descriptor @fd and export granted references
281  * to the pages of that dma-buf into array @refs of size @count.
288 	/* File descriptor of the dma-buf. */
289 	__u32 fd;  member
294 	/* Reserved - must be zero. */
303  * @fd, so it can be released by the owner. This is only valid for buffers
311 	__u32 fd;  member