1postfix_virtual_selinux(8S)ELinux Policy postfix_virtuaplostfix_virtual_selinux(8)
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NAME

6       postfix_virtual_selinux  - Security Enhanced Linux Policy for the post‐
7       fix_virtual processes
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DESCRIPTION

10       Security-Enhanced Linux secures the postfix_virtual processes via flex‐
11       ible mandatory access control.
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13       The   postfix_virtual  processes  execute  with  the  postfix_virtual_t
14       SELinux type. You can check if you have these processes running by exe‐
15       cuting the ps command with the -Z qualifier.
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17       For example:
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19       ps -eZ | grep postfix_virtual_t
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22

ENTRYPOINTS

24       The  postfix_virtual_t SELinux type can be entered via the postfix_vir‐
25       tual_exec_t file type.
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27       The default entrypoint paths for the postfix_virtual_t domain  are  the
28       following:
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30       /usr/libexec/postfix/virtual
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PROCESS TYPES

33       SELinux defines process types (domains) for each process running on the
34       system
35
36       You can see the context of a process using the -Z option to ps
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38       Policy governs the access confined processes have  to  files.   SELinux
39       postfix_virtual  policy  is very flexible allowing users to setup their
40       postfix_virtual processes in as secure a method as possible.
41
42       The following process types are defined for postfix_virtual:
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44       postfix_virtual_t
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46       Note: semanage permissive -a postfix_virtual_t can be used to make  the
47       process type postfix_virtual_t permissive. SELinux does not deny access
48       to permissive process types, but the AVC (SELinux denials) messages are
49       still generated.
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51

BOOLEANS

53       SELinux  policy  is customizable based on least access required.  post‐
54       fix_virtual policy is extremely flexible and has several booleans  that
55       allow  you  to  manipulate  the policy and run postfix_virtual with the
56       tightest access possible.
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60       If you want to allow all domains to execute in fips_mode, you must turn
61       on the fips_mode boolean. Enabled by default.
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63       setsebool -P fips_mode 1
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67       If  you  want  to  allow  system  to run with NIS, you must turn on the
68       nis_enabled boolean. Disabled by default.
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70       setsebool -P nis_enabled 1
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MANAGED FILES

75       The SELinux process type postfix_virtual_t  can  manage  files  labeled
76       with  the following file types.  The paths listed are the default paths
77       for these file types.  Note the processes UID still need  to  have  DAC
78       permissions.
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80       cifs_t
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82
83       dovecot_spool_t
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85            /var/spool/dovecot(/.*)?
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87       ecryptfs_t
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89            /home/[^/]+/.Private(/.*)?
90            /home/[^/]+/.ecryptfs(/.*)?
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92       fusefs_t
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94            /var/run/user/[0-9]+/gvfs
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96       krb5_host_rcache_t
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98            /var/tmp/krb5_0.rcache2
99            /var/cache/krb5rcache(/.*)?
100            /var/tmp/nfs_0
101            /var/tmp/DNS_25
102            /var/tmp/host_0
103            /var/tmp/imap_0
104            /var/tmp/HTTP_23
105            /var/tmp/HTTP_48
106            /var/tmp/ldap_55
107            /var/tmp/ldap_487
108            /var/tmp/ldapmap1_0
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110       mail_home_rw_t
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112            /root/Maildir(/.*)?
113            /root/.esmtp_queue(/.*)?
114            /var/lib/arpwatch/.esmtp_queue(/.*)?
115            /home/[^/]+/.maildir(/.*)?
116            /home/[^/]+/Maildir(/.*)?
117            /home/[^/]+/.esmtp_queue(/.*)?
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119       nfs_t
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121
122       postfix_spool_t
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124            /var/spool/postfix.*
125            /var/spool/postfix/defer(/.*)?
126            /var/spool/postfix/flush(/.*)?
127            /var/spool/postfix/deferred(/.*)?
128            /var/spool/postfix/maildrop(/.*)?
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130       postfix_var_run_t
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132            /var/spool/postfix/pid/.*
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134       postfix_virtual_tmp_t
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137       user_home_t
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139            /home/[^/]+/.+
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141       user_home_type
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143            all user home files
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145

FILE CONTEXTS

147       SELinux requires files to have an extended attribute to define the file
148       type.
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150       You can see the context of a file using the -Z option to ls
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152       Policy governs the access  confined  processes  have  to  these  files.
153       SELinux postfix_virtual policy is very flexible allowing users to setup
154       their postfix_virtual processes in as secure a method as possible.
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156       STANDARD FILE CONTEXT
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158       SELinux defines the file context types for the postfix_virtual, if  you
159       wanted  to  store files with these types in a different paths, you need
160       to execute the semanage command to specify alternate labeling and  then
161       use restorecon to put the labels on disk.
162
163       semanage   fcontext  -a  -t  postfix_virtual_exec_t  '/srv/postfix_vir‐
164       tual/content(/.*)?'
165       restorecon -R -v /srv/mypostfix_virtual_content
166
167       Note: SELinux often uses regular expressions  to  specify  labels  that
168       match multiple files.
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170       The following file types are defined for postfix_virtual:
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172
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174       postfix_virtual_exec_t
175
176       -  Set files with the postfix_virtual_exec_t type, if you want to tran‐
177       sition an executable to the postfix_virtual_t domain.
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181       postfix_virtual_tmp_t
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183       - Set files with the postfix_virtual_tmp_t type, if you want  to  store
184       postfix virtual temporary files in the /tmp directories.
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187
188       Note:  File context can be temporarily modified with the chcon command.
189       If you want to permanently change the file context you need to use  the
190       semanage fcontext command.  This will modify the SELinux labeling data‐
191       base.  You will need to use restorecon to apply the labels.
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193

COMMANDS

195       semanage fcontext can also be used to manipulate default  file  context
196       mappings.
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198       semanage  permissive  can  also  be used to manipulate whether or not a
199       process type is permissive.
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201       semanage module can also be used to enable/disable/install/remove  pol‐
202       icy modules.
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204       semanage boolean can also be used to manipulate the booleans
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206
207       system-config-selinux is a GUI tool available to customize SELinux pol‐
208       icy settings.
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AUTHOR

212       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

216       selinux(8), postfix_virtual(8), semanage(8),  restorecon(8),  chcon(1),
217       sepolicy(8), setsebool(8)
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221postfix_virtual                    23-10-20         postfix_virtual_selinux(8)
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