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pivot_root.2: Change "filesystem" to "mount" in various places 

Quoting Eric:

    If we are going to be pedantic "filesystem" is really the
    wrong concept here.  The section about bind mount clarifies
    it, but I wonder if there is a better term.

    I think I would say: "new_root and put_old must not be on
    the same mount as the current root."

    I think using "mount" instead of "filesystem" keeps the
    concepts less confusing.

    As I am reading through this email and seeing text that is
    trying to be precise and clear then hitting the term
    "filesystem" is a bit jarring.  pivot_root doesn't care a
    thing for file systems.  pivot_root only cares about mounts.

    And by a "mount" I mean the thing that you get when you
    create a bind mount or you call mount normally.

Reported-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2019-10-09 12:14:35 +02:00
parent 9f3af6b8c8
commit 33313a260c
1 changed files with 5 additions and 3 deletions
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8
man2/pivot_root.2
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@ -72,8 +72,10 @@ and
.IR put_old
must be directories.
.IP \-
\fIput_old\fP must not be on the same filesystem as
the current root.
.I new_root
and
.I put_old
must not be on the same mount as the current root.
.IP \-
\fIput_old\fP must be at or underneath \fInew_root\fP;
that is, adding a nonnegative
@ -191,7 +193,7 @@ from where it can subsequently be unmounted.
(The fact that it moves all processes that have a root directory
or current working directory on the old root directory to the
new root frees the old root directory of users,
allowing the old root filesystem to be unmounted more easily.)
allowing the old root mount to be unmounted more easily.)
.PP
A typical use of
.BR pivot_root ()