4aa850d6cb
This is derived from swills@ fork of the Juniper virtfs with many changes by me including bug fixes, style improvements, clearer layering and more consistent logging. The filesystem is renamed to p9fs to better reflect its function and to prevent possible future confusion with virtio-fs. Several updates and fixes from Juniper have been integrated into this version by Val Packett and these contributions along with the original Juniper authors are credited below. To use this with bhyve, add 'virtio_p9fs_load=YES' to loader.conf. The bhyve virtio-9p device allows access from the guest to files on the host by mapping a 'sharename' to a host path. It is possible to use p9fs as a root filesystem by adding this to /boot/loader.conf: vfs.root.mountfrom="p9fs:sharename" for non-root filesystems add something like this to /etc/fstab: sharename /mnt p9fs rw 0 0 In both examples, substitute the share name used on the bhyve command line. The 9P filesystem protocol relies on stateful file opens which map protocol-level FIDs to host file descriptors. The FreeBSD vnode interface doesn't really support this and we use heuristics to guess the right FID to use for file operations. This can be confused by privilege lowering and does not guarantee that the FID created for a given file open is always used for file operations, even if the calling process is using the file descriptor from the original open call. Improving this would involve changes to the vnode interface which is out-of-scope for this import. Differential Revision: https://reviews.freebsd.org/D41844 Reviewed by: kib, emaste, dch MFC after: 3 months Co-authored-by: Val Packett <val@packett.cool> Co-authored-by: Ka Ho Ng <kahon@juniper.net> Co-authored-by: joyu <joyul@juniper.net> Co-authored-by: Kumara Babu Narayanaswamy <bkumara@juniper.net>
FreeBSD Source:
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| Directory | Description |
|---|---|
| bin | System/user commands. |
| cddl | Various commands and libraries under the Common Development and Distribution License. |
| contrib | Packages contributed by 3rd parties. |
| crypto | Cryptography stuff (see crypto/README). |
| etc | Template files for /etc. |
| gnu | Commands and libraries under the GNU General Public License (GPL) or Lesser General Public License (LGPL). Please see gnu/COPYING and gnu/COPYING.LIB for more information. |
| include | System include files. |
| kerberos5 | Kerberos5 (Heimdal) package. |
| lib | System libraries. |
| libexec | System daemons. |
| release | Release building Makefile & associated tools. |
| rescue | Build system for statically linked /rescue utilities. |
| sbin | System commands. |
| secure | Cryptographic libraries and commands. |
| share | Shared resources. |
| stand | Boot loader sources. |
| sys | Kernel sources (see sys/README.md). |
| targets | Support for experimental DIRDEPS_BUILD |
| tests | Regression tests which can be run by Kyua. See tests/README for additional information. |
| tools | Utilities for regression testing and miscellaneous tasks. |
| usr.bin | User commands. |
| usr.sbin | System administration commands. |
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