erofs: accept source file descriptor via fsconfig

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Allow userspace to pass an already-opened file descriptor as the mount
source instead of a path string.  This is useful for tools that already
hold an fd to the image, such as composefs reusing an existing erofs
backing file.

Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
Reviewed-by: Gao Xiang <xiang@kernel.org>
Reviewed-by: Christian Brauner (Amutable) <brauner@kernel.org>
Acked-by: Jan Kara <jack@suse.cz>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <xiang@kernel.org>

...

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Giuseppe Scrivano 2026-08-04 07:58:42 +02:00 • committed by Gao Xiang

parent 9ba8471dab

commit 058884d234

2 changed files with 79 additions and 11 deletions

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17

Documentation/filesystems/erofs.rst

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73

fs/erofs/super.c

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