60788f5431
Implement directory listing (ls) for the ext4l filesystem driver. This includes path resolution with symlink following (limited to 8 levels to prevent loops). Add ext4l_ls() which uses ext4_lookup() for path resolution and ext4_readdir() for directory enumeration. The dir_context actor callback formats and prints each directory entry. Export ext4_lookup() from namei.c and add declarations to ext4.h. Add test_ls to the Python test suite, which creates a test file using debugfs and verifies it appears in the directory listing with the correct size. Co-developed-by: Claude Opus 4.5 <noreply@anthropic.com> Cover-letter: ext4l: Add support for listing directoties (Part H) This series adds directory-listing support to the ext4l filesystem driver. It exports a few required functions from the Linux ext4 code, fixes the dir_emit() stub to properly call the actor callback, and implements ext4l_ls() with path resolution and symlink following. END Signed-off-by: Simon Glass <simon.glass@canonical.com>
46 lines
1.0 KiB
C
46 lines
1.0 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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/**
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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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* @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_get_uuid() - Get the filesystem UUID
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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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#endif /* __EXT4L_H__ */
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