February 2004
Intermediate to advanced
383 pages
11h 49m
English
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Name
mount_volfs
Synopsis
mount_volfs [-omount_options]mount_point
Description
Mounts the volfs filesystem in
/.vol. The volfs filesystem
enables the Carbon File Manager API to map a file ID to a file,
without knowing the BSD path to it. Thus, HFS aliases, which use file
IDs, remain consistent, even if the targets of the aliases move
around within the volume.
The /.vol directory contains subdirectories
named with numeric IDs, each associated with a volume on the system.
While the directories appear empty if listed, with a file or
directory ID one can access any object on those volumes. A file ID is
a unique number associated with each file on a volume (analogous to
an inode number on a UFS-formatted filesystem), and can be viewed
with the -i option of ls.
If you know a file’s ID, you can access it as
/.vol/vol_ID/file_ID. If you know the ID of the
directory the file is in, you can also access it as
/.vol/vol_ID/dir_ID/filename. The root directory
of a volume always has a directory ID of 2, so you can map volume IDs
to volumes with:
% cd /.vol/ vol_ID /2; pwdOptions/Usage
- -o
Takes -
ooptions as listed in themountmanpage. Not normally used formount_volfs.-
mount_point The directory on which the filesystem will be mounted, normally
/.vol.
Location
/sbin
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.