Created attachment 414504 [details] guestmount logs Description of problem: Can not edit the content of files mounted with guestmount cmd Version-Release number of selected component (if applicable): libguestfs-mount-1.2.3-1.fc12.6.x86_64, latest git version v1.3.13 How reproducible: 100% Steps to Reproduce: 1. create a blank image with guestfish 2. create several ascii files on it 3. mount the image with guestmount cmd, e.g.: guestmount -a /home/libguestfs-test/test.img -n -m /dev/sda1 /home/pcao/mnt --trace 4. using vi to create a new file or edit an existing file on "/home/pcao/mnt" Actual results: file can not be changed and got read-only error. Expected results: file should be changed Additional info: cp a file from host to the mount point , and echo sth to a file can not work either. However, truncate , chmod, ln could work.
I forgot about this, but it's just that we didn't implement the 'write' syscall: http://git.annexia.org/?p=libguestfs.git;a=blob;f=fuse/guestmount.c;h=27a4cef2e149027b06cefbfadf89ab64c4de4bc7;hb=HEAD#l649 So while in theory this is a simple fix, in fact it's a little more complex than that because it requires bug 501889 to be fixed first, and that requires some changes to the generator (see discussion of BufferIn in the TODO file here: http://libguestfs.org/TODO.txt )
Proposed fixes posted upstream: https://www.redhat.com/archives/libguestfs/2010-May/msg00113.html https://www.redhat.com/archives/libguestfs/2010-May/msg00114.html