1postfix_pickup_selinux(8)SELinux Policy postfix_pickuppostfix_pickup_selinux(8)
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6 postfix_pickup_selinux - Security Enhanced Linux Policy for the post‐
7 fix_pickup processes
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10 Security-Enhanced Linux secures the postfix_pickup processes via flexi‐
11 ble mandatory access control.
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13 The postfix_pickup processes execute with the postfix_pickup_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep postfix_pickup_t
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24 The postfix_pickup_t SELinux type can be entered via the post‐
25 fix_pickup_exec_t file type.
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27 The default entrypoint paths for the postfix_pickup_t domain are the
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30 /usr/libexec/postfix/pickup
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33 SELinux defines process types (domains) for each process running on the
34 system
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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_pickup policy is very flexible allowing users to setup their
40 postfix_pickup processes in as secure a method as possible.
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42 The following process types are defined for postfix_pickup:
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44 postfix_pickup_t
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46 Note: semanage permissive -a postfix_pickup_t can be used to make the
47 process type postfix_pickup_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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53 SELinux policy is customizable based on least access required. post‐
54 fix_pickup policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run postfix_pickup 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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75 The SELinux process type postfix_pickup_t can manage files labeled with
76 the following file types. The paths listed are the default paths for
77 these file types. Note the processes UID still need to have DAC per‐
78 missions.
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80 anon_inodefs_t
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83 postfix_var_run_t
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85 /var/spool/postfix/pid/.*
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89 SELinux requires files to have an extended attribute to define the file
90 type.
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92 You can see the context of a file using the -Z option to ls
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94 Policy governs the access confined processes have to these files.
95 SELinux postfix_pickup policy is very flexible allowing users to setup
96 their postfix_pickup processes in as secure a method as possible.
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98 STANDARD FILE CONTEXT
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100 SELinux defines the file context types for the postfix_pickup, if you
101 wanted to store files with these types in a diffent paths, you need to
102 execute the semanage command to sepecify alternate labeling and then
103 use restorecon to put the labels on disk.
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105 semanage fcontext -a -t postfix_pickup_tmp_t '/srv/mypost‐
106 fix_pickup_content(/.*)?'
107 restorecon -R -v /srv/mypostfix_pickup_content
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109 Note: SELinux often uses regular expressions to specify labels that
110 match multiple files.
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112 The following file types are defined for postfix_pickup:
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116 postfix_pickup_exec_t
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118 - Set files with the postfix_pickup_exec_t type, if you want to transi‐
119 tion an executable to the postfix_pickup_t domain.
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123 postfix_pickup_tmp_t
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125 - Set files with the postfix_pickup_tmp_t type, if you want to store
126 postfix pickup temporary files in the /tmp directories.
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130 Note: File context can be temporarily modified with the chcon command.
131 If you want to permanently change the file context you need to use the
132 semanage fcontext command. This will modify the SELinux labeling data‐
133 base. You will need to use restorecon to apply the labels.
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137 semanage fcontext can also be used to manipulate default file context
138 mappings.
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140 semanage permissive can also be used to manipulate whether or not a
141 process type is permissive.
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143 semanage module can also be used to enable/disable/install/remove pol‐
144 icy modules.
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146 semanage boolean can also be used to manipulate the booleans
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149 system-config-selinux is a GUI tool available to customize SELinux pol‐
150 icy settings.
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154 This manual page was auto-generated using sepolicy manpage .
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158 selinux(8), postfix_pickup(8), semanage(8), restorecon(8), chcon(1),
159 sepolicy(8), setsebool(8)
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163postfix_pickup 21-03-26 postfix_pickup_selinux(8)