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pseudofs: add support for export_ops

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Pseudo-filesystems might reasonably wish to implement the export ops
(particularly for name_to_handle_at/open_by_handle_at); plumb this
through pseudo_fs_context

Reviewed-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Erin Shepherd <erin.shepherd@e43.eu>
Link: https://lore.kernel.org/r/20241113-pidfs_fh-v2-1-9a4d28155a37@e43.eu
Link: https://lore.kernel.org/r/20241129-work-pidfs-file_handle-v1-1-87d803a42495@kernel.org
Signed-off-by: Christian Brauner <brauner@kernel.org>
This commit is contained in:
Erin Shepherd 2024-11-29 14:38:00 +01:00 committed by Christian Brauner
parent d8b47d051e
commit d2ab36bb11
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2 changed files with 2 additions and 0 deletions
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1
fs/libfs.c
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@ -673,6 +673,7 @@ static int pseudo_fs_fill_super(struct super_block *s, struct fs_context *fc)
s->s_blocksize_bits = PAGE_SHIFT;
s->s_magic = ctx->magic;
s->s_op = ctx->ops ?: &simple_super_operations;
s->s_export_op = ctx->eops;
s->s_xattr = ctx->xattr;
s->s_time_gran = 1;
root = new_inode(s);

1
include/linux/pseudo_fs.h
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@ -5,6 +5,7 @@
struct pseudo_fs_context {
const struct super_operations *ops;
const struct export_operations *eops;
const struct xattr_handler * const *xattr;
const struct dentry_operations *dops;
unsigned long magic;