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inherited file and fifo perms 

The following patch defines new macros rw_inherited_fifo_file_perms and
rw_inherited_term_perms for the obvious reason.

I've had this in Debian for a while and some Debian policy relies on it.

I think it's appropriate to include this before including any policy that
relies on it because it's an obvious foundation for writing good policy.

We could have inherited perms macros for other object types, but terminals
and fifos are the main ones that get inherited.  The next best candidate
for such a macro is a sock_file, and that's largely due to systemd setting
programs stdout/stderr to unix domain sockets.
This commit is contained in:
Russell Coker 2017-02-12 22:18:15 +11:00 committed by Chris PeBenito
parent e9b2a7943c
commit 69215f0664
1 changed files with 4 additions and 2 deletions
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6
policy/support/obj_perm_sets.spt
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@ -192,7 +192,8 @@ define(`setattr_fifo_file_perms',`{ setattr }')
define(`read_fifo_file_perms',`{ getattr open read lock ioctl }') define(`read_fifo_file_perms',`{ getattr open read lock ioctl }')
define(`append_fifo_file_perms',`{ getattr open append lock ioctl }') define(`append_fifo_file_perms',`{ getattr open append lock ioctl }')
define(`write_fifo_file_perms',`{ getattr open write append lock ioctl }') define(`write_fifo_file_perms',`{ getattr open write append lock ioctl }')
define(`rw_fifo_file_perms',`{ getattr open read write append ioctl lock }') define(`rw_inherited_fifo_file_perms',`{ getattr read write append ioctl lock }')
define(`rw_fifo_file_perms',`{ open rw_inherited_fifo_file_perms }')
define(`create_fifo_file_perms',`{ getattr create open }') define(`create_fifo_file_perms',`{ getattr create open }')
define(`rename_fifo_file_perms',`{ getattr rename }') define(`rename_fifo_file_perms',`{ getattr rename }')
define(`delete_fifo_file_perms',`{ getattr unlink }') define(`delete_fifo_file_perms',`{ getattr unlink }')
@ -260,7 +261,8 @@ define(`relabel_chr_file_perms',`{ getattr relabelfrom relabelto }')
# #
# Use (read and write) terminals # Use (read and write) terminals
# #
define(`rw_term_perms', `{ getattr open read write append ioctl }') define(`rw_inherited_term_perms', `{ getattr read write append ioctl }')
define(`rw_term_perms', `{ rw_inherited_term_perms open }')
# #
# Sockets # Sockets