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| author | Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com> | 2024-09-03 18:16:25 +0300 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2024-09-04 17:51:11 +0300 |
| commit | 16e1503eaf329129170e4e7a078aee17686967a5 (patch) | |
| tree | c6b23f7ab6d60204a18e5a109fa946a72f9587cf /rust/helpers/helpers.c | |
| parent | 6d14b18596ca69719cfe1af87dbf3c5e763d29b5 (diff) | |
| download | linux-16e1503eaf329129170e4e7a078aee17686967a5.tar.xz | |
fuse: allow idmapped mounts
Now we have everything in place and we can allow idmapped mounts
by setting the FS_ALLOW_IDMAP flag. Notice that real availability
of idmapped mounts will depend on the fuse daemon. Fuse daemon
have to set FUSE_ALLOW_IDMAP flag in the FUSE_INIT reply.
To discuss:
- we enable idmapped mounts support only if "default_permissions" mode is
enabled, because otherwise we would need to deal with UID/GID mappings in
the userspace side OR provide the userspace with idmapped
req->in.h.uid/req->in.h.gid values which is not something that we probably
want to. Idmapped mounts philosophy is not about faking caller uid/gid.
Some extra links and examples:
- libfuse support
https://github.com/mihalicyn/libfuse/commits/idmap_support
- fuse-overlayfs support:
https://github.com/mihalicyn/fuse-overlayfs/commits/idmap_support
- cephfs-fuse conversion example
https://github.com/mihalicyn/ceph/commits/fuse_idmap
- glusterfs conversion example
https://github.com/mihalicyn/glusterfs/commits/fuse_idmap
Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@canonical.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'rust/helpers/helpers.c')
0 files changed, 0 insertions, 0 deletions