Ian Dowse 318f2fb4bf Add a new mount flag MNT_BYFSID that can be used to unmount a file ... system by specifying the file system ID instead of a path. Use this by default in umount(8). This avoids the need to perform any vnode operations to look up the mount point, so it makes it possible to unmount a file system whose root vnode cannot be looked up (e.g. due to a dead NFS server, or a file system that has become detached from the hierarchy because an underlying file system was unmounted). It also provides an unambiguous way to specify which file system is to be unmunted. Since the ability to unmount using a path name is retained only for compatibility, that case now just uses a simple string comparison of the supplied path against f_mntonname of each mounted file system. Discussed on: freebsd-arch mdoc help from: ru		2003-07-01 17:40:23 +00:00
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Makefile	Remove one of two WARNS=0.	2003-02-23 13:22:41 +00:00
umount.8	mdoc(7) fixes: Fix the markup in the recently added ENVIRONMENT section.	2003-05-19 19:58:29 +00:00
umount.c	Add a new mount flag MNT_BYFSID that can be used to unmount a file	2003-07-01 17:40:23 +00:00