9feaf24750
This ensures that the value written is both compatible with older mtree versions (which expect the value after the period to be an integer count of nanoseconds after the whole second) and is a correct floating-point value. Leave the parsing code unchanged so it will continue to read older files.
273 lines
7.2 KiB
Groff
273 lines
7.2 KiB
Groff
.\" Copyright (c) 1989, 1990, 1993
|
|
.\" The Regents of the University of California. All rights reserved.
|
|
.\"
|
|
.\" Redistribution and use in source and binary forms, with or without
|
|
.\" modification, are permitted provided that the following conditions
|
|
.\" are met:
|
|
.\" 1. Redistributions of source code must retain the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer.
|
|
.\" 2. Redistributions in binary form must reproduce the above copyright
|
|
.\" notice, this list of conditions and the following disclaimer in the
|
|
.\" documentation and/or other materials provided with the distribution.
|
|
.\" 4. Neither the name of the University nor the names of its contributors
|
|
.\" may be used to endorse or promote products derived from this software
|
|
.\" without specific prior written permission.
|
|
.\"
|
|
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
.\" SUCH DAMAGE.
|
|
.\"
|
|
.\" From: @(#)mtree.8 8.2 (Berkeley) 12/11/93
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd December 31, 2007
|
|
.Dt MTREE 5
|
|
.Os
|
|
.Sh NAME
|
|
.Nm mtree
|
|
.Nd format of mtree dir heirarchy files
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
format is a textual format that describes a collection of filesystem objects.
|
|
Such files are typically used to create or verify directory heirarchies.
|
|
.Ss General Format
|
|
An
|
|
.Nm
|
|
file consists of a series of lines, each providing information
|
|
about a single filesystem object.
|
|
Leading whitespace is always ignored.
|
|
.Pp
|
|
When encoding file or pathnames, any backslash character or
|
|
character outside of the 95 printable ASCII characters must be
|
|
encoded as a a backslash followed by three
|
|
octal digits.
|
|
When reading mtree files, any appearance of a backslash
|
|
followed by three octal digits should be converted into the
|
|
corresponding character.
|
|
.Pp
|
|
Each line is interpreted independently as one of the following types:
|
|
.Bl -tag -width Cm
|
|
.It Signature
|
|
The first line of any mtree file must begin with
|
|
.Dq #mtree .
|
|
If a file contains any full path entries, the first line should
|
|
begin with
|
|
.Dq #mtree v2.0 ,
|
|
otherwise, the first line should begin with
|
|
.Dq #mtree v1.0 .
|
|
.It Blank
|
|
Blank lines are ignored.
|
|
.It Comment
|
|
Lines beginning with
|
|
.Cm #
|
|
are ignored.
|
|
.It Special
|
|
Lines beginning with
|
|
.Cm /
|
|
are special commands that influence
|
|
the interpretation of later lines.
|
|
.It Relative
|
|
If the first whitespace-delimited word has no
|
|
.Cm /
|
|
characters,
|
|
it is the name of a file in the current directory.
|
|
Any relative entry that describes a directory changes the
|
|
current directory.
|
|
.It dot-dot
|
|
As a special case, a relative entry with the filename
|
|
.Pa ..
|
|
changes the current directory to the parent directory.
|
|
Options on dot-dot entries are always ignored.
|
|
.It Full
|
|
If the first whitespace-delimited word has a
|
|
.Cm /
|
|
character after
|
|
the first character, it is the pathname of a file relative to the
|
|
starting directory.
|
|
There can be multiple full entries describing the same file.
|
|
.El
|
|
.Pp
|
|
Some tools that process
|
|
.Nm
|
|
files may require that multiple lines describing the same file
|
|
occur consecutively.
|
|
It is not permitted for the same file to be mentioned using
|
|
both a relative and a full file specification.
|
|
.Ss Special commands
|
|
Two special commands are currently defined:
|
|
.Bl -tag -width Cm
|
|
.It Cm /set
|
|
This command defines default values for one or more keywords.
|
|
It is followed on the same line by one or more whitespace-separated
|
|
keyword definitions.
|
|
These definitions apply to all following files that do not specify
|
|
a value for that keyword.
|
|
.It Cm /unset
|
|
This command removes any default value set by a previous
|
|
.Cm /set
|
|
command.
|
|
It is followed on the same line by one or more keywords
|
|
separated by whitespace.
|
|
.El
|
|
.Ss Keywords
|
|
After the filename, a full or relative entry consists of zero
|
|
or more whitespace-separated keyword definitions.
|
|
Each such definitions consists of a key from the following
|
|
list immediately followed by an '=' sign
|
|
and a value.
|
|
Software programs reading mtree files should warn about
|
|
unrecognized keywords.
|
|
.Pp
|
|
Currently supported keywords are as follows:
|
|
.Bl -tag -width Cm
|
|
.It Cm cksum
|
|
The checksum of the file using the default algorithm specified by
|
|
the
|
|
.Xr cksum 1
|
|
utility.
|
|
.It Cm contents
|
|
The full pathname of a file whose contents should be
|
|
compared to the contents of this file.
|
|
.It Cm flags
|
|
The file flags as a symbolic name.
|
|
See
|
|
.Xr chflags 1
|
|
for information on these names.
|
|
If no flags are to be set the string
|
|
.Dq none
|
|
may be used to override the current default.
|
|
.It Cm ignore
|
|
Ignore any file hierarchy below this file.
|
|
.It Cm gid
|
|
The file group as a numeric value.
|
|
.It Cm gname
|
|
The file group as a symbolic name.
|
|
.It Cm md5
|
|
The MD5 message digest of the file.
|
|
.It Cm md5digest
|
|
A synonym for
|
|
.Cm md5 .
|
|
.It Cm sha1
|
|
The
|
|
.Tn FIPS
|
|
160-1
|
|
.Pq Dq Tn SHA-1
|
|
message digest of the file.
|
|
.It Cm sha1digest
|
|
A synonym for
|
|
.Cm sha1 .
|
|
.It Cm sha256
|
|
The
|
|
.Tn FIPS
|
|
180-2
|
|
.Pq Dq Tn SHA-256
|
|
message digest of the file.
|
|
.It Cm sha256digest
|
|
A synonym for
|
|
.Cm sha256 .
|
|
.It Cm ripemd160digest
|
|
The
|
|
.Tn RIPEMD160
|
|
message digest of the file.
|
|
.It Cm rmd160
|
|
A synonym for
|
|
.Cm ripemd160digest .
|
|
.It Cm rmd160digest
|
|
A synonym for
|
|
.Cm ripemd160digest .
|
|
.It Cm mode
|
|
The current file's permissions as a numeric (octal) or symbolic
|
|
value.
|
|
.It Cm nlink
|
|
The number of hard links the file is expected to have.
|
|
.It Cm nochange
|
|
Make sure this file or directory exists but otherwise ignore all attributes.
|
|
.It Cm uid
|
|
The file owner as a numeric value.
|
|
.It Cm uname
|
|
The file owner as a symbolic name.
|
|
.It Cm size
|
|
The size, in bytes, of the file.
|
|
.It Cm link
|
|
The file the symbolic link is expected to reference.
|
|
.It Cm time
|
|
The last modification time of the file, in seconds and nanoseconds.
|
|
The value should include a period character and exactly nine digits
|
|
after the period.
|
|
.It Cm type
|
|
The type of the file; may be set to any one of the following:
|
|
.Pp
|
|
.Bl -tag -width Cm -compact
|
|
.It Cm block
|
|
block special device
|
|
.It Cm char
|
|
character special device
|
|
.It Cm dir
|
|
directory
|
|
.It Cm fifo
|
|
fifo
|
|
.It Cm file
|
|
regular file
|
|
.It Cm link
|
|
symbolic link
|
|
.It Cm socket
|
|
socket
|
|
.El
|
|
.El
|
|
.Pp
|
|
.Sh SEE ALSO
|
|
.Xr cksum 1 ,
|
|
.Xr find 1 ,
|
|
.Xr mtree 8
|
|
.Sh BUGS
|
|
The
|
|
.Fx
|
|
implementation of mtree does not currently support
|
|
the
|
|
.Nm
|
|
2.0
|
|
format.
|
|
The requirement for a
|
|
.Dq #mtree
|
|
signature line is new and not yet widely implemented.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
utility appeared in
|
|
.Bx 4.3 Reno .
|
|
The
|
|
.Tn MD5
|
|
digest capability was added in
|
|
.Fx 2.1 ,
|
|
in response to the widespread use of programs which can spoof
|
|
.Xr cksum 1 .
|
|
The
|
|
.Tn SHA-1
|
|
and
|
|
.Tn RIPEMD160
|
|
digests were added in
|
|
.Fx 4.0 ,
|
|
as new attacks have demonstrated weaknesses in
|
|
.Tn MD5 .
|
|
The
|
|
.Tn SHA-256
|
|
digest was added in
|
|
.Fx 6.0 .
|
|
Support for file flags was added in
|
|
.Fx 4.0 ,
|
|
and mostly comes from
|
|
.Nx .
|
|
The
|
|
.Dq full
|
|
entry format was added by
|
|
.Nx .
|