1setfiles_mac_selinux(8) SELinux Policy setfiles_mac setfiles_mac_selinux(8)
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6 setfiles_mac_selinux - Security Enhanced Linux Policy for the set‐
7 files_mac processes
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10 Security-Enhanced Linux secures the setfiles_mac processes via flexible
11 mandatory access control.
12 The setfiles_mac processes execute with the setfiles_mac_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
16 For example:
18 ps -eZ | grep setfiles_mac_t
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24 The setfiles_mac_t SELinux type can be entered via the setfiles_exec_t
25 file type.
26 The default entrypoint paths for the setfiles_mac_t domain are the fol‐
28 lowing:
29 /sbin/setfiles.*, /usr/sbin/setfiles.*, /sbin/restorecon,
31 /usr/sbin/restorecon
32
34 SELinux defines process types (domains) for each process running on the
35 system
36 You can see the context of a process using the -Z option to ps
38 Policy governs the access confined processes have to files. SELinux
40 setfiles_mac policy is very flexible allowing users to setup their set‐
41 files_mac processes in as secure a method as possible.
42 The following process types are defined for setfiles_mac:
44 setfiles_mac_t
46 Note: semanage permissive -a setfiles_mac_t can be used to make the
48 process type setfiles_mac_t permissive. SELinux does not deny access to
49 permissive process types, but the AVC (SELinux denials) messages are
50 still generated.
51
54 SELinux policy is customizable based on least access required. set‐
55 files_mac policy is extremely flexible and has several booleans that
56 allow you to manipulate the policy and run setfiles_mac with the tight‐
57 est access possible.
58 If you want to deny user domains applications to map a memory region as
62 both executable and writable, this is dangerous and the executable
63 should be reported in bugzilla, you must turn on the deny_execmem bool‐
64 ean. Enabled by default.
65 setsebool -P deny_execmem 1
67 If you want to deny any process from ptracing or debugging any other
71 processes, you must turn on the deny_ptrace boolean. Enabled by
72 default.
73 setsebool -P deny_ptrace 1
75 If you want to allow any process to mmap any file on system with
79 attribute file_type, you must turn on the domain_can_mmap_files bool‐
80 ean. Enabled by default.
81 setsebool -P domain_can_mmap_files 1
83 If you want to allow all domains write to kmsg_device, while kernel is
87 executed with systemd.log_target=kmsg parameter, you must turn on the
88 domain_can_write_kmsg boolean. Disabled by default.
89 setsebool -P domain_can_write_kmsg 1
91 If you want to allow all domains to use other domains file descriptors,
95 you must turn on the domain_fd_use boolean. Enabled by default.
96 setsebool -P domain_fd_use 1
98 If you want to allow all domains to have the kernel load modules, you
102 must turn on the domain_kernel_load_modules boolean. Disabled by
103 default.
104 setsebool -P domain_kernel_load_modules 1
106 If you want to allow all domains to execute in fips_mode, you must turn
110 on the fips_mode boolean. Enabled by default.
111 setsebool -P fips_mode 1
113 If you want to enable reading of urandom for all domains, you must turn
117 on the global_ssp boolean. Disabled by default.
118 setsebool -P global_ssp 1
120 If you want to control the ability to mmap a low area of the address
124 space, as configured by /proc/sys/vm/mmap_min_addr, you must turn on
125 the mmap_low_allowed boolean. Disabled by default.
126 setsebool -P mmap_low_allowed 1
128 If you want to disable kernel module loading, you must turn on the
132 secure_mode_insmod boolean. Enabled by default.
133 setsebool -P secure_mode_insmod 1
135 If you want to boolean to determine whether the system permits loading
139 policy, setting enforcing mode, and changing boolean values. Set this
140 to true and you have to reboot to set it back, you must turn on the
141 secure_mode_policyload boolean. Enabled by default.
142 setsebool -P secure_mode_policyload 1
144 If you want to allow unconfined executables to make their heap memory
148 executable. Doing this is a really bad idea. Probably indicates a
149 badly coded executable, but could indicate an attack. This executable
150 should be reported in bugzilla, you must turn on the selin‐
151 uxuser_execheap boolean. Disabled by default.
152 setsebool -P selinuxuser_execheap 1
154 If you want to allow all unconfined executables to use libraries
158 requiring text relocation that are not labeled textrel_shlib_t, you
159 must turn on the selinuxuser_execmod boolean. Enabled by default.
160 setsebool -P selinuxuser_execmod 1
162 If you want to allow unconfined executables to make their stack exe‐
166 cutable. This should never, ever be necessary. Probably indicates a
167 badly coded executable, but could indicate an attack. This executable
168 should be reported in bugzilla, you must turn on the selinuxuser_exec‐
169 stack boolean. Enabled by default.
170 setsebool -P selinuxuser_execstack 1
172 If you want to support X userspace object manager, you must turn on the
176 xserver_object_manager boolean. Enabled by default.
177 setsebool -P xserver_object_manager 1
179
183 The SELinux process type setfiles_mac_t can manage files labeled with
184 the following file types. The paths listed are the default paths for
185 these file types. Note the processes UID still need to have DAC per‐
186 missions.
187 file_type
189 all files on the system
191
194 semanage fcontext can also be used to manipulate default file context
195 mappings.
196 semanage permissive can also be used to manipulate whether or not a
198 process type is permissive.
199 semanage module can also be used to enable/disable/install/remove pol‐
201 icy modules.
202 semanage boolean can also be used to manipulate the booleans
204 system-config-selinux is a GUI tool available to customize SELinux pol‐
207 icy settings.
208
211 This manual page was auto-generated using sepolicy manpage .
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215 selinux(8), setfiles_mac(8), semanage(8), restorecon(8), chcon(1),
216 sepolicy(8) , setsebool(8)
217setfiles_mac 19-04-25 setfiles_mac_selinux(8)