SEO

Otto Moerbeek wrote:
> > ~% ./test
> > ./test[2]: cannot create /mnt/nfs/nowplaying: Operation not permitted
>
> As which user was the command done?

My own user.

> I first though a truncate of a file was failing (if you look at
> the log you'll see the setattr sz 0x0, but I made a litle test
> case that just runs fine.
>
> Also, it is strange your client report _creation_ failure. It
> should not create a file in this case, AFAIK.
>
> Can you modify your test script so it cleary reports if the
> redirect is failing or the touch.

> Also, The permissions of the parent dir are interesting. Please
> include ls -n info, and id info for your users; I like to see
> the numbers.

~% cat test
#!/bin/sh
echo uid: $(id -u) user: $USER
ls -nd /mnt/nfs/nowplaying /mnt/nfs/
echo -n 'TEST: echo foo > /mnt/nfs/nowplaying RESULT: '
echo foo > /mnt/nfs/nowplaying
echo
ls -nd /mnt/nfs/nowplaying
echo -n 'TEST: touch /mnt/nfs/nowplaying RESULT: '
touch /mnt/nfs/nowplaying
echo
ls -nd /mnt/nfs/nowplaying


Look at the filesizes!

~% ./test
uid: 1000 user: han
drwxr-xr-x 24 1000 3000 1536 2006-03-28 12:05 /mnt/nfs/
-rw-rw-r-- 1 1006 3000 4 2006-03-28 12:10 /mnt/nfs/nowplaying
TEST: echo foo > /mnt/nfs/nowplaying RESULT: ./test[5]: cannot create /mnt/nfs/nowplaying: Operation not permitted

-rw-rw-r-- 1 1006 3000 4 2006-03-28 12:10 /mnt/nfs/nowplaying
TEST: touch /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1006 3000 0 2006-03-28 12:13 /mnt/nfs/nowplaying
~% sudo -u bascuppen ./test
uid: 1006 user: bascuppen
drwxr-xr-x 24 1000 3000 1536 2006-03-28 12:05 /mnt/nfs/
-rw-rw-r-- 1 1006 3000 0 2006-03-28 12:13 /mnt/nfs/nowplaying
TEST: echo foo > /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1006 3000 4 2006-03-28 12:13 /mnt/nfs/nowplaying
TEST: touch /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1006 3000 4 2006-03-28 12:13 /mnt/nfs/nowplaying


Now I change the ownership of the file, keep looking at that filesize.

~% ./test
uid: 1000 user: han
drwxr-xr-x 24 1000 3000 1536 2006-03-28 12:05 /mnt/nfs/
-rw-rw-r-- 1 1000 3000 4 2006-03-28 12:13 /mnt/nfs/nowplaying
TEST: echo foo > /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1000 3000 4 2006-03-28 12:14 /mnt/nfs/nowplaying
TEST: touch /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1000 3000 4 2006-03-28 12:14 /mnt/nfs/nowplaying
~% sudo -u bascuppen ./test
uid: 1006 user: bascuppen
drwxr-xr-x 24 1000 3000 1536 2006-03-28 12:05 /mnt/nfs/
-rw-rw-r-- 1 1000 3000 4 2006-03-28 12:14 /mnt/nfs/nowplaying
TEST: echo foo > /mnt/nfs/nowplaying RESULT: ./test[5]: cannot create /mnt/nfs/nowplaying: Operation not permitted

-rw-rw-r-- 1 1000 3000 4 2006-03-28 12:14 /mnt/nfs/nowplaying
TEST: touch /mnt/nfs/nowplaying RESULT:
-rw-rw-r-- 1 1000 3000 0 2006-03-28 12:14 /mnt/nfs/nowplaying

> Also, I like to know if you can edit the file using an editor.

Note: I used mg on linux, which creates backups like it should, by
making a copy and not by moving and creating a new file.


~% ls -nd /mnt/nfs/nowplaying
-rw-rw-r-- 1 1000 3000 4 mrt 28 12:20 /mnt/nfs/nowplaying
~% sudo -u bascuppen mg /mnt/nfs/nowplaying
;; writing failed, file untouched.
~% ls -nd /mnt/nfs/nowplaying
-rw-rw-r-- 1 1000 3000 4 mrt 28 12:20 /mnt/nfs/nowplaying

Change of owner:

~% ls -nd /mnt/nfs/nowplaying
-rw-rw-r-- 1 1006 3000 0 mrt 28 12:20 /mnt/nfs/nowplaying
~% sudo -u bascuppen mg /mnt/nfs/nowplaying
~% ls -nd /mnt/nfs/nowplaying
-rw-rw-r-- 1 1006 3000 12 mrt 28 12:22 /mnt/nfs/nowplaying
~% mg /mnt/nfs/nowplaying
;; writing failed, file cleared.
~% ls -nd /mnt/nfs/nowplaying
-rw-rw-r-- 1 1006 3000 0 mrt 28 12:22 /mnt/nfs/nowplaying

Which made me thing it was something the editor did, so I checked
the inode. And the inode remains the same.


> Oh and please make sure you really ARE running the diff, I
> almost get the feeling you're not...

Most certainly because with the unpatched version I cannot touch.

~% l /bsd /usr/src/sys/arch/i386/compile/GENERIC/bsd
-rwxr-xr-x 1 root wheel 5.3M Mar 28 10:14 /bsd
-rwxr-xr-x 1 han wsrc 5.3M Mar 28 10:13 /usr/src/sys/arch/i386/compile/GENERIC/bsd



# Han
--
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