1postfix_master_selinux(8)SELinux Policy postfix_masterpostfix_master_selinux(8)
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6 postfix_master_selinux - Security Enhanced Linux Policy for the post‐
7 fix_master processes
8
10 Security-Enhanced Linux secures the postfix_master processes via flexi‐
11 ble mandatory access control.
12 The postfix_master processes execute with the postfix_master_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 postfix_master_t
20
24 The postfix_master_t SELinux type can be entered via the postfix_mas‐
25 ter_exec_t file type.
26 The default entrypoint paths for the postfix_master_t domain are the
28 following:
29 /usr/sbin/postcat, /usr/sbin/postfix, /usr/sbin/postlog,
31 /usr/sbin/postkick, /usr/sbin/postlock, /usr/sbin/postalias,
32 /usr/sbin/postsuper, /usr/libexec/postfix/master
33
35 SELinux defines process types (domains) for each process running on the
36 system
37 You can see the context of a process using the -Z option to ps
39 Policy governs the access confined processes have to files. SELinux
41 postfix_master policy is very flexible allowing users to setup their
42 postfix_master processes in as secure a method as possible.
43 The following process types are defined for postfix_master:
45 postfix_master_t
47 Note: semanage permissive -a postfix_master_t can be used to make the
49 process type postfix_master_t permissive. SELinux does not deny access
50 to permissive process types, but the AVC (SELinux denials) messages are
51 still generated.
52
55 SELinux policy is customizable based on least access required. post‐
56 fix_master policy is extremely flexible and has several booleans that
57 allow you to manipulate the policy and run postfix_master with the
58 tightest access possible.
59 If you want to allow all domains to execute in fips_mode, you must turn
63 on the fips_mode boolean. Enabled by default.
64 setsebool -P fips_mode 1
66
70 The SELinux process type postfix_master_t can manage files labeled with
71 the following file types. The paths listed are the default paths for
72 these file types. Note the processes UID still need to have DAC per‐
73 missions.
74 anon_inodefs_t
76 cluster_conf_t
79 /etc/cluster(/.*)?
81 cluster_var_lib_t
83 /var/lib/pcsd(/.*)?
85 /var/lib/cluster(/.*)?
86 /var/lib/openais(/.*)?
87 /var/lib/pengine(/.*)?
88 /var/lib/corosync(/.*)?
89 /usr/lib/heartbeat(/.*)?
90 /var/lib/heartbeat(/.*)?
91 /var/lib/pacemaker(/.*)?
92 cluster_var_run_t
94 /var/run/crm(/.*)?
96 /var/run/cman_.*
97 /var/run/rsctmp(/.*)?
98 /var/run/aisexec.*
99 /var/run/heartbeat(/.*)?
100 /var/run/corosync-qnetd(/.*)?
101 /var/run/corosync-qdevice(/.*)?
102 /var/run/corosync.pid
103 /var/run/cpglockd.pid
104 /var/run/rgmanager.pid
105 /var/run/cluster/rgmanager.sk
106 mailman_data_t
108 /etc/mailman.*
110 /var/lib/mailman(/.*)?
111 /var/spool/mailman.*
112 postfix_data_t
114 /var/lib/postfix.*
116 postfix_private_t
118 /var/spool/postfix/private(/.*)?
120 postfix_prng_t
122 /etc/postfix/prng_exch
124 postfix_spool_t
126 /var/spool/postfix.*
128 /var/spool/postfix/defer(/.*)?
129 /var/spool/postfix/flush(/.*)?
130 /var/spool/postfix/deferred(/.*)?
131 /var/spool/postfix/maildrop(/.*)?
132 postfix_var_run_t
134 /var/spool/postfix/pid/.*
136 root_t
138 /sysroot/ostree/deploy/.*-atomic/deploy(/.*)?
140 /
141 /initrd
142
145 SELinux requires files to have an extended attribute to define the file
146 type.
147 You can see the context of a file using the -Z option to ls
149 Policy governs the access confined processes have to these files.
151 SELinux postfix_master policy is very flexible allowing users to setup
152 their postfix_master processes in as secure a method as possible.
153 The following file types are defined for postfix_master:
155 postfix_master_exec_t
159 - Set files with the postfix_master_exec_t type, if you want to transi‐
161 tion an executable to the postfix_master_t domain.
162 Paths:
165 /usr/sbin/postcat, /usr/sbin/postfix, /usr/sbin/postlog,
166 /usr/sbin/postkick, /usr/sbin/postlock, /usr/sbin/postalias,
167 /usr/sbin/postsuper, /usr/libexec/postfix/master
168 Note: File context can be temporarily modified with the chcon command.
171 If you want to permanently change the file context you need to use the
172 semanage fcontext command. This will modify the SELinux labeling data‐
173 base. You will need to use restorecon to apply the labels.
174
177 semanage fcontext can also be used to manipulate default file context
178 mappings.
179 semanage permissive can also be used to manipulate whether or not a
181 process type is permissive.
182 semanage module can also be used to enable/disable/install/remove pol‐
184 icy modules.
185 semanage boolean can also be used to manipulate the booleans
187 system-config-selinux is a GUI tool available to customize SELinux pol‐
190 icy settings.
191
194 This manual page was auto-generated using sepolicy manpage .
195
198 selinux(8), postfix_master(8), semanage(8), restorecon(8), chcon(1),
199 sepolicy(8), setsebool(8)
200postfix_master 21-03-26 postfix_master_selinux(8)