<!-- Copyright (c) 2000, 2001, 2002, 2003, 2004, 2005, 2008, 2009, 2013 The President and Fellows of Harvard College. 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. 3. 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 UNIVERSITY 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 UNIVERSITY 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. --> <html> <head> <title>dumpsfs</title> <body bgcolor=#ffffff> <h2 align=center>dumpsfs</h2> <h4 align=center>OS/161 Reference Manual</h4> <h3>Name</h3> <p> dumpsfs - dump information about an SFS filesystem </p> <h3>Synopsis</h3> <p> <tt>/sbin/dumpsfs</tt> <em>raw-device</em><br> <tt>host-dumpsfs</tt> <em>disk-image-file</em> </p> <h3>Description</h3> <p> <tt>dumpsfs</tt> dumps out selected information regarding the contents and structure of the SFS filesystem on the device it is passed. <p> <p> Like <A HREF=mksfs.html>mksfs</A>, it is also compiled for the System/161 host OS, and in that form can access System/161's disk image files. </p> <h3>Requirements</h3> <p> <tt>dumpsfs</tt> uses the following system calls: <ul> <li> <A HREF=../syscall/open.html>open</A> <li> <A HREF=../syscall/read.html>read</A> <li> <A HREF=../syscall/write.html>write</A> <li> <A HREF=../syscall/lseek.html>lseek</A> <li> <A HREF=../syscall/fstat.html>fstat</A> <li> <A HREF=../syscall/close.html>close</A> <li> <A HREF=../syscall/_exit.html>_exit</A> </ul> </p> <p> Since the fstat system call is not normally part of the basic system calls assignment, <tt>dumpsfs</tt> will usually still not function after that assignment is completed. The fstat call is typically part of a later assignment, usually the file system assignment. Consult your course materials for specific information. </p> <p> The host version of <tt>dumpsfs</tt>, since it runs outside of OS/161, should always work regardless of what you have and have not implemented. </p> <p> Note that you may wish to extend dumpsfs in the course of doing the file system assignment. </p> <h3>See Also</h3> <p> <A HREF=mksfs.html>mksfs</A>, <A HREF=sfsck.html>sfsck</A> </p> </body> </html>