allow sftp to read httpd_sys_content_t or public_content_t

[George Myer]

I have a directory that I need to share via https and sftp.  I have tried labeling the directory as httpd_sys_content_t and public_content_t.  This allows httpd access to the directory but not sftp via ssh.  If I change the label to chroot_user_t then ssh works but httpd can't access the data.

# cat /var/log/secure
Jan 27 13:50:25 www sshd[8872]: fatal: safely_chroot: stat("/data"): Permission denied

# ls -lZ
drwxr-xr-x. root anonymous system_u:object_r:public_content_t:s0 data

# cat /var/log/audit/audit.log
type=AVC
 msg=audit(1391012447.734:1292): avc:  denied  { getattr } for  pid=7910
 comm="sshd" path="/data" dev=dm-4 ino=2 
scontext=unconfined_u:system_r:chroot_user_t:s0-s0:c0.c1023 
tcontext=system_u:object_r:public_content_t:s0 tclass=dir

I have https working as I am currently using public_content_t.  I know that the public_content_t allows HTTP Sever, FTP, rsync, and Samba but sftp is not listed.  So I have 2 questions:
1) How can I allow sftp access to /data?
2) Why isn't sftp allowed to read public_content_t labels?

Thanks,
George

[Daniel J Walsh]

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On 01/29/2014 11:04 AM, George Myer wrote:
> I have a directory that I need to share via https and sftp.  I have tried 
> labeling the directory as httpd_sys_content_t and public_content_t.  This
> allows httpd access to the directory but not sftp via ssh.  If I change the
> label to chroot_user_t then ssh works but httpd can't access the data.
>
> # cat /var/log/secure Jan 27 13:50:25 www sshd[8872]: fatal: safely_chroot:
> stat("/data"): Permission denied
>
> # ls -lZ drwxr-xr-x. root anonymous system_u:object_r:public_content_t:s0
> data
>
> # cat /var/log/audit/audit.log type=AVC msg=audit(1391012447.734:1292):
> avc: denied { getattr } for pid=7910 comm="sshd" path="/data" dev=dm-4
> ino=2 scontext=unconfined_u:system_r:chroot_user_t:s0-s0:c0.c1023 
> tcontext=system_u:object_r:public_content_t:s0 tclass=dir
>
> I have https working as I am currently using public_content_t.  I know that
> the public_content_t allows HTTP Sever, FTP, rsync, and Samba but sftp is
> not listed.  So I have 2 questions: 1) How can I allow sftp access to
> /data? 2) Why isn't sftp allowed to read public_content_t labels?
>
> Thanks, George
>
> -- selinux mailing list [e-mail] 
> https://admin.fedoraproject.org/mailman/listinfo/selinux

Easiest is to just write a custom policy module allowing rsync_t to read
public_content_t.
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