f4b820f8ec
Provide access to the virtual queue and some functions for sending various FUSE messages. Add myself as a maintainer of virtio. Signed-off-by: Simon Glass <sjg@chromium.org>
83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef VIRTIO_FS_H
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#define VIRTIO_FS_H
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struct blk_desc;
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struct disk_partition;
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struct fs_dirent;
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struct fs_dir_stream;
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/**
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* virtio_fs_compat_opendir() - Open a directory
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*
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* This is a compatibility interface for struct fstype_info
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*
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* @fname: Path to directory to open ("/" for root)
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* @strmp: Returns an allocated pointer to the new stream
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* Return 0 if OK, -ve on error
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*/
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int virtio_fs_compat_opendir(const char *fname, struct fs_dir_stream **strmp);
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/**
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* virtio_fs_compat_readdir() - Read a single directory entry
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*
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* This is a compatibility interface for struct fstype_info
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*
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* @strm: Directory stream as created by virtio_fs_compat_opendir()
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* @dentp: Return an allocated entry on success
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* Return: 0 if OK, -ENOENT if no more entries, other -ve value on other error
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*/
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int virtio_fs_compat_readdir(struct fs_dir_stream *strm,
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struct fs_dirent **dentp);
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/**
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* virtio_fs_compat_closedir() - Stop reading the directory
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*
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* This is a compatibility interface for struct fstype_info
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*
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* Frees @strm and releases the directory
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*
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* @strm: Directory stream as created by virtio_fs_compat_opendir()
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*/
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void virtio_fs_compat_closedir(struct fs_dir_stream *strm);
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/**
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* virtio_fs_compat_probe() - Probe for a virtio-fs filesystem
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*
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* This is a compatibility interface for struct fstype_info
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*
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* For now, this just locates the first available UCLASS_FS device and sets a
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* global variable to it, for use by the above virtio_fs_compat_...() functions.
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*
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* @fs_dev_desc: Block device (not used, can be NULL)
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* @fs_partition: Partition (not used, can be NULL)
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* Return: 0 if OK, -ve on error
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*/
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int virtio_fs_compat_probe(struct blk_desc *fs_dev_desc,
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struct disk_partition *fs_partition);
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/**
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* virtio_fs_compat_size() - Get the size of a file
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*
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* @fname: Filename to check
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* @sizep: Returns size of the file, on success
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* Return: 0 if OK, -ve on error
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*/
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int virtio_fs_compat_size(const char *fname, loff_t *sizep);
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/**
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* virtio_fs_compat_read() - Read from a file
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*
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* @fname: Filename to read from
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* @buf: Buffer to read into
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* @offset: Offset within the file to start reading
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* @len: Number of bytes to read, or 0 to read all
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* @actread: Returns the number of bytes actually read, on success
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* Return: 0 if OK, -ve on error
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*/
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int virtio_fs_compat_read(const char *fname, void *buf, loff_t offset,
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loff_t len, loff_t *actread);
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#endif
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