systemd-tmpfiles can manage various file classes but the permissions
vary depending on the class.
Signed-off-by: Chris PeBenito <chpebeni@linux.microsoft.com>
For every services sandbox systemd will create a (or more ?) tmpfs including symlinks for various files, e.g.:
Jun 11 14:03:17 selinux-pr-test1 audit[284]: AVC avc: granted { create } for pid=284 comm="(imesyncd)" name="stderr" scontext=system_u:system_r:init_t:s0 tcontext=system_u:object_r:tmpfs_t:s0 tclass=lnk_file
Signed-off-by: bauen1 <j2468h@gmail.com>
Add interface similar to files_mountpoint() and add a conditional which
allows mount on non_security_file_type.
Signed-off-by: Chris PeBenito <chpebeni@linux.microsoft.com>
entrypoint and execute_no_trans permissions are only ever checked by the
kernel to regular files. They were added to the chr_file class when
execmod was added (which can be checked on chr_file) to ensure that it
was assigned the same value as for the file class, since the kernel code
always checked FILE__EXECMOD. However, the policy definitions are not
necessary since the kernel and policy values have been decoupled ever
since dynamic class/perm support was introduced and further with the
move of execmod to the common definitions, they were not even needed
in the kernel.
These were removed from the kernel's classmap by
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b424485abe2b16580a178b469917a7b6ee0c152a
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Remove unused permission definitions from SELinux.
Many of these were only ever used in pre-mainline
versions of SELinux, prior to Linux 2.6.0. Some of them
were used in the legacy network or compat_net=1 checks
that were disabled by default in Linux 2.6.18 and
fully removed in Linux 2.6.30.
The corresponding classmap declarations were removed from the
mainline kernel in:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=42a9699a9fa179c0054ea3cf5ad3cc67104a6162
Permissions never used in mainline Linux:
file swapon
filesystem transition
tcp_socket { connectto newconn acceptfrom }
node enforce_dest
unix_stream_socket { newconn acceptfrom }
Legacy network checks, removed in 2.6.30:
socket { recv_msg send_msg }
node { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
netif { tcp_recv tcp_send udp_recv udp_send rawip_recv rawip_send dccp_recv dccp_send }
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Remove complement (~) and wildcard (*) in allow rules so that there are no
unintentional additions when new permissions are declared.
This patch does not add or remove permissions from any rules.
Chris PeBenito
Chris PeBenito
bauen1
Christian Göttsche
Stephen Smalley