Applied, thanks! jbra...@dismail.de via Bug reports for the GNU Hurd, le sam. 12 oct. 2024 10:36:49 -0400, a ecrit: > * hurd/libmachdev.mdwn: new file. > * hurd/documentation.mdwn: link to libmachdev > --- > hurd/documentation.mdwn | 1 + > hurd/libmachdev.mdwn | 28 ++++++++++++++++++++++++++++ > 2 files changed, 29 insertions(+) > create mode 100644 hurd/libmachdev.mdwn > > diff --git a/hurd/documentation.mdwn b/hurd/documentation.mdwn > index b79ddb0a..68914697 100644 > --- a/hurd/documentation.mdwn > +++ b/hurd/documentation.mdwn > @@ -74,6 +74,7 @@ is included in the section entitled > * [[libstore]] > * [[libchannel]] > * [[libtrivfs]] > + * [[libmachdev]] > * [[libnetfs]] -- short introductory material > * [[libdiskfs]] > * [[libihash]] > diff --git a/hurd/libmachdev.mdwn b/hurd/libmachdev.mdwn > new file mode 100644 > index 00000000..3f8634e4 > --- /dev/null > +++ b/hurd/libmachdev.mdwn > @@ -0,0 +1,28 @@ > +[[!meta copyright="Copyright © 2024 Free Software Foundation, Inc."]] > + > +[[!meta license="""[[!toggle id="license" text="GFDL 1.2+"]][[!toggleable > +id="license" text="Permission is granted to copy, distribute and/or modify > this > +document under the terms of the GNU Free Documentation License, Version 1.2 > or > +any later version published by the Free Software Foundation; with no > Invariant > +Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the > license > +is included in the section entitled [[GNU Free Documentation > +License|/fdl]]."]]"""]] > + > +GNU/Linux is a monolithic kernel, meaning that a lot of functionality > +is baked into the kernel, including filesystems like `ext4` or `xfs`. > +Alternatively, the Hurd's filesystems are in userspace, but our disk > +device drivers are baked into the GNU Mach kernel image (via > +[[DDE|hurd/dde]]). With [[rumpdisk|hurd/rump/rumpdisk]], the Hurd can > +use SSDs with userspace device drivers! RumpDisk uses `libmachdev` as > +a helper library. > + > +`libmachdev` exposes devices to userspace via some Mach `device-*` RPC > +calls. `libmachdev` provides a trivfs that intercepts the > +`device_open` RPC, which the `/dev` node uses. It also fakes a > +filesystem node, so you can mount a `netfs` onto it. You still have > +to implement `device_read` and `device_write` yourself, but that code > +runs in userspace. An example of this can be found in > +`rumpdisk/block-rump.c`. > + > +If [[serverboot V2|open_issues/serverbootv2]] is written, then > +`libmachdev` could be simplified or maybe removed. > -- > 2.45.2 > >
-- Samuel <b> lisons de l'assembleur c -+- #sos - CrisC forever -+-
