problem with umask.

[Ajay S. <ss...@am...>]

I'm playing around with the umask and it seems like it's only applied on
the files that it only reduces permissions and it won't increase them.

Example:  The umask is 022, the local file is 777, when you upload it,
the file will become 755 on the server.  Good!

If the local file is 600 and you upload it then the file on the server
will remain 600.  Bad.

I want to force the file to be group writable with a umask of 002 but
this won't work if people are keeping their local files 600.  Some
output of what I'm talking about is below, I've also include the log
entries so that you can see that the umask is being set correctly:

Good:

[ssharma@ajay ssharma]$ chmod 0777 test.sql 
[ssharma@ajay ssharma]$ ls -l test.sql 
-rwxrwxrwx    1 ssharma  ssharma     38356 Apr 24 11:14 test.sql
[ssharma@ajay ssharma]$ sftp us...@ho...
Connecting to host.amntv.com...
us...@ho...'s password: 
sftp> put test.sql
Uploading test.sql to /home/user/test.sql
sftp> ls
-rwxr-xr-x    0 1000     1000        38356 Oct 22 11:50 test.sql
sftp> 

Bad:

[ssharma@ajay ssharma]$ ls -l test.sql 
-rw-------    1 ssharma  ssharma     38356 Apr 24 11:14 test.sql
[ssharma@ajay ssharma]$ sftp us...@ho...
Connecting to host.amntv.com...
us...@ho...'s password: 
sftp> put test.sql
Uploading test.sql to /home/fosdick/test.sql
sftp> ls -l test.sql
-rw-------    0 1000     1000        38356 Oct 22 11:49 test.sql

And here's what a connection looks like in the log:

Oct 22 11:49:08 host sshd(pam_unix)[18646]: session opened for user user
by (uid=1000)
Oct 22 11:49:08 host rssh[18647]: setting log facility to LOG_USER
Oct 22 11:49:08 host rssh[18647]: allowing scp to all users
Oct 22 11:49:08 host rssh[18647]: allowing sftp to all users
Oct 22 11:49:08 host rssh[18647]: setting umask to 022
Oct 22 11:49:08 host rssh[18647]: line 40: configuring user user
Oct 22 11:49:08 host rssh[18647]: setting user's umask to 022
Oct 22 11:49:08 host rssh[18647]: allowing scp to user user
Oct 22 11:49:08 host rssh[18647]: allowing sftp to user user
Oct 22 11:49:08 host rssh[18647]: chrooting user to
/var/www/clients.amntv.com/chroot/
Oct 22 11:49:08 host rssh[18647]: chroot cmd line:
/usr/libexec/rssh_chroot_helper "/var/www/clients.amntv.com/chroot" 2
"/home/user" /usr/libexec/openssh/sftp-server
Oct 22 18:49:08 host rssh_chroot_helper[18647]: new session for user,
UID=1000
Oct 22 11:49:25 host sshd(pam_unix)[18646]: session closed for user user

If this is the way that umask is supposed to work then please correct
me.  I'm certainly no unix expert so I could very well be wrong.

Thanks,
Ajay