targetcli-2.1.fb49-1.fc30.noarch
kernel-5.0.0-0.rc2.git2.1.fc30.x86_64

How reproducible:
always

Steps to Reproduce:
1. # truncate -s 1G /tmp/xxx
2. # targetcli /backstores/fileio/ create xxx /tmp/xxx
Created fileio xxx with size 1073741824
3. # targetcli /backstores/fileio/xxx info 
[Errno 13] Permission denied: '/sys/kernel/config/target/core/fileio_28/xxx/attrib/pi_prot_format'


Also getting nice Python traceback when running targetcli interactively:

# targetcli 
> targetcli shell version 2.1.fb49
> Copyright 2011-2013 by Datera, Inc and others.
> For help on commands, type 'help'.
> 
>  /> /backstores/fileio/xxx info
> Traceback (most recent call last):
>   File "/usr/bin/targetcli", line 122, in <module>
>     main()
>   File "/usr/bin/targetcli", line 112, in main
>     shell.run_interactive()
>   File "/usr/lib/python3.7/site-packages/configshell_fb/shell.py", line 905, in run_interactive
>     self._cli_loop()
>   File "/usr/lib/python3.7/site-packages/configshell_fb/shell.py", line 734, in _cli_loop
>     self.run_cmdline(cmdline)
>   File "/usr/lib/python3.7/site-packages/configshell_fb/shell.py", line 848, in run_cmdline
>     self._execute_command(path, command, pparams, kparams)
>   File "/usr/lib/python3.7/site-packages/configshell_fb/shell.py", line 823, in _execute_command
>     result = target.execute_command(command, pparams, kparams)
>   File "/usr/lib/python3.7/site-packages/configshell_fb/node.py", line 1406, in execute_command
>     return method(*pparams, **kparams)
>   File "/usr/lib/python3.7/site-packages/targetcli/ui_node.py", line 207, in ui_command_info
>     info = self.rtsnode.dump()
>   File "/usr/lib/python3.7/site-packages/rtslib_fb/tcm.py", line 693, in dump
>     d = super(FileIOStorageObject, self).dump()
>   File "/usr/lib/python3.7/site-packages/rtslib_fb/tcm.py", line 314, in dump
>     d = super(StorageObject, self).dump()
>   File "/usr/lib/python3.7/site-packages/rtslib_fb/node.py", line 225, in dump
>     attrs[item] = int(self.get_attribute(item))
>   File "/usr/lib/python3.7/site-packages/rtslib_fb/node.py", line 168, in get_attribute
>     return fread(path)
>   File "/usr/lib/python3.7/site-packages/rtslib_fb/utils.py", line 100, in fread
>     with open(path, 'r') as file_fd:
> PermissionError: [Errno 13] Permission denied: '/sys/kernel/config/target/core/fileio_28/xxx/attrib/pi_prot_format'


Additional info:
Not necessarily targetcli bug in its nature, filing for consideration and better error handling.