freebsd-dev/sys/fs/unionfs
Adrian Chadd f3a90da995 Reviewed by: jlemon
An initial tidyup of the mount() syscall and VFS mount code.

This code replaces the earlier work done by jlemon in an attempt to
make linux_mount() work.

* the guts of the mount work has been moved into vfs_mount().

* move `type', `path' and `flags' from being userland variables into being
  kernel variables in vfs_mount(). `data' remains a pointer into
  userspace.

* Attempt to verify the `type' and `path' strings passed to vfs_mount()
  aren't too long.

* rework mount() and linux_mount() to take the userland parameters
  (besides data, as mentioned) and pass kernel variables to vfs_mount().
  (linux_mount() already did this, I've just tidied it up a little more.)

* remove the copyin*() stuff for `path'. `data' still requires copyin*()
  since its a pointer into userland.

* set `mount->mnt_statf_mntonname' in vfs_mount() rather than in each
  filesystem.  This variable is generally initialised with `path', and
  each filesystem can override it if they want to.

* NOTE: f_mntonname is intiailised with "/" in the case of a root mount.
2001-03-01 21:00:17 +00:00
..
union_subr.c Use <sys/queue.h> macro API. 2001-02-04 12:37:48 +00:00
union_vfsops.c Reviewed by: jlemon 2001-03-01 21:00:17 +00:00
union_vnops.c Fix breakage unconvered by LINT - dont refer to undefined variables in 2001-01-17 01:10:23 +00:00
union.h Back out the previous change to the queue(3) interface. 2000-05-26 02:09:24 +00:00