73848983f5
The filesystem uuid method is not implemented. Add ext4l_uuid() which returns the filesystem UUID as a string and wire it into the filesystem operations table. Add a test. Co-developed-by: Claude <noreply@anthropic.com> Signed-off-by: Simon Glass <simon.glass@canonical.com>
114 lines
2.8 KiB
C
114 lines
2.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* ext4l filesystem interface
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*
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* Copyright 2025 Canonical Ltd
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* Written by Simon Glass <simon.glass@canonical.com>
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*/
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#ifndef __EXT4L_H__
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#define __EXT4L_H__
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struct blk_desc;
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struct disk_partition;
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struct fs_dir_stream;
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struct fs_dirent;
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/**
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* ext4l_probe() - Probe a block device for an ext4 filesystem
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*
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* @fs_dev_desc: Block device descriptor
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* @fs_partition: Partition information
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* Return: 0 on success, -EINVAL if no device or invalid magic,
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* -ENOMEM on allocation failure, -EIO on read error
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*/
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int ext4l_probe(struct blk_desc *fs_dev_desc,
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struct disk_partition *fs_partition);
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/**
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* ext4l_close() - Close the ext4 filesystem
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*/
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void ext4l_close(void);
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/**
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* ext4l_ls() - List directory contents
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*
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* @dirname: Directory path to list
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* Return: 0 on success, negative on error
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*/
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int ext4l_ls(const char *dirname);
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/**
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* ext4l_exists() - Check if a file or directory exists
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*
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* @filename: Path to check
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* Return: 1 if exists, 0 if not
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*/
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int ext4l_exists(const char *filename);
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/**
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* ext4l_size() - Get the size of a file
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*
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* @filename: Path to file
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* @sizep: Returns the file size
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* Return: 0 on success, negative on error
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*/
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int ext4l_size(const char *filename, loff_t *sizep);
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/**
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* ext4l_read() - Read data from a file
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*
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* @filename: Path to file
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* @buf: Buffer to read data into
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* @offset: Byte offset to start reading from
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* @len: Number of bytes to read (0 = read entire file from offset)
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* @actread: Returns actual bytes read
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* Return: 0 on success, negative on error
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*/
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int ext4l_read(const char *filename, void *buf, loff_t offset, loff_t len,
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loff_t *actread);
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/**
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* ext4l_get_uuid() - Get the filesystem UUID
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*
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* @uuid: Buffer to receive the 16-byte UUID
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* Return: 0 on success, -ENODEV if not mounted
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*/
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int ext4l_get_uuid(u8 *uuid);
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/**
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* ext4l_uuid() - Get the filesystem UUID as a string
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*
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* @uuid_str: Buffer to receive the UUID string (must be at least 37 bytes)
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* Return: 0 on success, -ENODEV if not mounted
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*/
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int ext4l_uuid(char *uuid_str);
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/**
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* ext4l_opendir() - Open a directory for iteration
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*
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* @filename: Directory path
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* @dirsp: Returns directory stream pointer
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* Return: 0 on success, -ENODEV if not mounted, -ENOTDIR if not a directory,
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* -ENOMEM on allocation failure
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*/
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int ext4l_opendir(const char *filename, struct fs_dir_stream **dirsp);
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/**
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* ext4l_readdir() - Read the next directory entry
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*
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* @dirs: Directory stream from ext4l_opendir
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* @dentp: Returns pointer to directory entry
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* Return: 0 on success, -ENODEV if not mounted, -ENOENT at end of directory
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*/
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int ext4l_readdir(struct fs_dir_stream *dirs, struct fs_dirent **dentp);
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/**
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* ext4l_closedir() - Close a directory stream
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*
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* @dirs: Directory stream to close
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*/
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void ext4l_closedir(struct fs_dir_stream *dirs);
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#endif /* __EXT4L_H__ */
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