NAME¶

vumount – mount a filesystem or a resource

SYNOPSIS¶

vumount [options ...] source destination

DESCRIPTION¶

Everything is (or can be seen) as a file. It is part of the philosophy of UNIX. The file hierarchy is the global naming facility.

VUOS follows this principle: VUOS modules use mount(2) not only to mount virtual filesystems but also to activate other virtual services. The mountpoint, destination in the synopsis, is the name that will be used to identify the virtual entity/service.

For example, in vudev it is possible to mount devices, in vunet the mountpoint is the name of the networking stack, vustack(1) uses the path of the mountpoint to set the current stack for processes.

vumount is just a command interface to mount(2). The mount(8) command is a complex tool which includes several features like the management of /etc/fstab and /etc/mtab. mount(8) is a root setuid executable and performs security checks before the actual mount(2) syscall request. mount(8) can be used in VUOS in place of vumount but it requires the (virtual) real uid of the executing process to be 0 (root). e.g. vusu(1) can be used to set the virtual real uid to 0. vumount has been designed for VUOS but can be used to run the mount system call directly, without all the other management actions provided by mount(8). vumount is not setuid root.

OPTIONS¶

-h, --help

Print a short help message and exit.

-o list, --options list

comma-separated list of mount options

-t fstype, --types fstype

define the filesystem type

-r, --read-only

mount the filesystem read-only (same as -o ro)

-w, --rw, --read-write

mount the filesystem read-write (default)

-B, --bind

mount a subtree somewhere else (same as -o bind)

-M, --move

move a subtree to some other place

-R, --rbind

mount a subtree and all submounts somewhere else

SEE ALSO¶

umvu(1), vu_insmod(1), vu_lsmod(1), vu_rmmod(1), vuumount(1), vudebug(1)

AUTHOR¶

VirtualSquare. Project leader: Renzo Davoli