1postfix_pipe_selinux(8) SELinux Policy postfix_pipe postfix_pipe_selinux(8)
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6 postfix_pipe_selinux - Security Enhanced Linux Policy for the post‐
7 fix_pipe processes
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10 Security-Enhanced Linux secures the postfix_pipe processes via flexible
11 mandatory access control.
12 The postfix_pipe processes execute with the postfix_pipe_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_pipe_t
20
24 The postfix_pipe_t SELinux type can be entered via the post‐
25 fix_pipe_exec_t file type.
26 The default entrypoint paths for the postfix_pipe_t domain are the fol‐
28 lowing:
29 /usr/libexec/postfix/pipe
31
33 SELinux defines process types (domains) for each process running on the
34 system
35 You can see the context of a process using the -Z option to ps
37 Policy governs the access confined processes have to files. SELinux
39 postfix_pipe policy is very flexible allowing users to setup their
40 postfix_pipe processes in as secure a method as possible.
41 The following process types are defined for postfix_pipe:
43 postfix_pipe_t
45 Note: semanage permissive -a postfix_pipe_t can be used to make the
47 process type postfix_pipe_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
53 SELinux policy is customizable based on least access required. post‐
54 fix_pipe policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_pipe with the tight‐
56 est access possible.
57 If you want to allow users to resolve user passwd entries directly from
61 ldap rather then using a sssd server, you must turn on the authlo‐
62 gin_nsswitch_use_ldap boolean. Disabled by default.
63 setsebool -P authlogin_nsswitch_use_ldap 1
65 If you want to allow all domains to execute in fips_mode, you must turn
69 on the fips_mode boolean. Enabled by default.
70 setsebool -P fips_mode 1
72 If you want to allow confined applications to run with kerberos, you
76 must turn on the kerberos_enabled boolean. Disabled by default.
77 setsebool -P kerberos_enabled 1
79 If you want to allow system to run with NIS, you must turn on the
83 nis_enabled boolean. Disabled by default.
84 setsebool -P nis_enabled 1
86 If you want to allow confined applications to use nscd shared memory,
90 you must turn on the nscd_use_shm boolean. Disabled by default.
91 setsebool -P nscd_use_shm 1
93
97 The SELinux process type postfix_pipe_t can manage files labeled with
98 the following file types. The paths listed are the default paths for
99 these file types. Note the processes UID still need to have DAC per‐
100 missions.
101 anon_inodefs_t
103 mail_spool_t
106 /var/mail(/.*)?
108 /var/spool/imap(/.*)?
109 /var/spool/mail(/.*)?
110 /var/spool/smtpd(/.*)?
111 postfix_pipe_tmp_t
113 postfix_spool_t
116 /var/spool/postfix.*
118 /var/spool/postfix/defer(/.*)?
119 /var/spool/postfix/flush(/.*)?
120 /var/spool/postfix/deferred(/.*)?
121 /var/spool/postfix/maildrop(/.*)?
122 postfix_var_run_t
124 /var/spool/postfix/pid/.*
126
129 SELinux requires files to have an extended attribute to define the file
130 type.
131 You can see the context of a file using the -Z option to ls
133 Policy governs the access confined processes have to these files.
135 SELinux postfix_pipe policy is very flexible allowing users to setup
136 their postfix_pipe processes in as secure a method as possible.
137 STANDARD FILE CONTEXT
139 SELinux defines the file context types for the postfix_pipe, if you
141 wanted to store files with these types in a diffent paths, you need to
142 execute the semanage command to sepecify alternate labeling and then
143 use restorecon to put the labels on disk.
144 semanage fcontext -a -t postfix_pipe_tmp_t '/srv/mypostfix_pipe_con‐
146 tent(/.*)?'
147 restorecon -R -v /srv/mypostfix_pipe_content
148 Note: SELinux often uses regular expressions to specify labels that
150 match multiple files.
151 The following file types are defined for postfix_pipe:
153 postfix_pipe_exec_t
157 - Set files with the postfix_pipe_exec_t type, if you want to transi‐
159 tion an executable to the postfix_pipe_t domain.
160 postfix_pipe_tmp_t
164 - Set files with the postfix_pipe_tmp_t type, if you want to store
166 postfix pipe temporary files in the /tmp directories.
167 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_pipe(8), semanage(8), restorecon(8), chcon(1),
199 sepolicy(8), setsebool(8)
200postfix_pipe 19-12-02 postfix_pipe_selinux(8)