1qmail_local_selinux(8) SELinux Policy qmail_local qmail_local_selinux(8)
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6 qmail_local_selinux - Security Enhanced Linux Policy for the
7 qmail_local processes
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10 Security-Enhanced Linux secures the qmail_local processes via flexible
11 mandatory access control.
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13 The qmail_local processes execute with the qmail_local_t SELinux type.
14 You can check if you have these processes running by executing the ps
15 command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep qmail_local_t
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24 The qmail_local_t SELinux type can be entered via the
25 qmail_local_exec_t file type.
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27 The default entrypoint paths for the qmail_local_t domain are the fol‐
28 lowing:
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30 /var/qmail/bin/qmail-local
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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 qmail_local policy is very flexible allowing users to setup their
40 qmail_local processes in as secure a method as possible.
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42 The following process types are defined for qmail_local:
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44 qmail_local_t
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46 Note: semanage permissive -a qmail_local_t can be used to make the
47 process type qmail_local_t permissive. SELinux does not deny access to
48 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.
54 qmail_local policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run qmail_local with the tight‐
56 est access possible.
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60 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.
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64 setsebool -P authlogin_nsswitch_use_ldap 1
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68 If you want to deny any process from ptracing or debugging any other
69 processes, you must turn on the deny_ptrace boolean. Enabled by
70 default.
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72 setsebool -P deny_ptrace 1
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76 If you want to allow any process to mmap any file on system with
77 attribute file_type, you must turn on the domain_can_mmap_files bool‐
78 ean. Enabled by default.
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80 setsebool -P domain_can_mmap_files 1
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84 If you want to allow all domains write to kmsg_device, while kernel is
85 executed with systemd.log_target=kmsg parameter, you must turn on the
86 domain_can_write_kmsg boolean. Disabled by default.
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88 setsebool -P domain_can_write_kmsg 1
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92 If you want to allow all domains to use other domains file descriptors,
93 you must turn on the domain_fd_use boolean. Enabled by default.
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95 setsebool -P domain_fd_use 1
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99 If you want to allow all domains to have the kernel load modules, you
100 must turn on the domain_kernel_load_modules boolean. Disabled by
101 default.
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103 setsebool -P domain_kernel_load_modules 1
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107 If you want to allow all domains to execute in fips_mode, you must turn
108 on the fips_mode boolean. Enabled by default.
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110 setsebool -P fips_mode 1
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114 If you want to enable reading of urandom for all domains, you must turn
115 on the global_ssp boolean. Disabled by default.
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117 setsebool -P global_ssp 1
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121 If you want to allow confined applications to run with kerberos, you
122 must turn on the kerberos_enabled boolean. Enabled by default.
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124 setsebool -P kerberos_enabled 1
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128 If you want to allow system to run with NIS, you must turn on the
129 nis_enabled boolean. Disabled by default.
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131 setsebool -P nis_enabled 1
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135 If you want to allow confined applications to use nscd shared memory,
136 you must turn on the nscd_use_shm boolean. Disabled by default.
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138 setsebool -P nscd_use_shm 1
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142 If you want to support ecryptfs home directories, you must turn on the
143 use_ecryptfs_home_dirs boolean. Disabled by default.
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145 setsebool -P use_ecryptfs_home_dirs 1
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149 If you want to support fusefs home directories, you must turn on the
150 use_fusefs_home_dirs boolean. Disabled by default.
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152 setsebool -P use_fusefs_home_dirs 1
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156 If you want to support NFS home directories, you must turn on the
157 use_nfs_home_dirs boolean. Disabled by default.
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159 setsebool -P use_nfs_home_dirs 1
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163 If you want to support SAMBA home directories, you must turn on the
164 use_samba_home_dirs boolean. Disabled by default.
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166 setsebool -P use_samba_home_dirs 1
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171 The SELinux process type qmail_local_t can manage files labeled with
172 the following file types. The paths listed are the default paths for
173 these file types. Note the processes UID still need to have DAC per‐
174 missions.
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176 cifs_t
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179 dovecot_spool_t
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181 /var/spool/dovecot(/.*)?
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183 ecryptfs_t
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185 /home/[^/]+/.Private(/.*)?
186 /home/[^/]+/.ecryptfs(/.*)?
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188 fusefs_t
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190 /var/run/user/[^/]*/gvfs
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192 mail_home_rw_t
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194 /root/Maildir(/.*)?
195 /root/.esmtp_queue(/.*)?
196 /home/[^/]+/.maildir(/.*)?
197 /home/[^/]+/Maildir(/.*)?
198 /home/[^/]+/.esmtp_queue(/.*)?
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200 mail_spool_t
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202 /var/mail(/.*)?
203 /var/spool/imap(/.*)?
204 /var/spool/mail(/.*)?
205 /var/spool/smtpd(/.*)?
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207 nfs_t
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210 qmail_alias_home_t
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212 /var/qmail/alias(/.*)?
213 /var/qmail/alias
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215 user_home_t
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217 /home/[^/]+/.+
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221 SELinux requires files to have an extended attribute to define the file
222 type.
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224 You can see the context of a file using the -Z option to ls
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226 Policy governs the access confined processes have to these files.
227 SELinux qmail_local policy is very flexible allowing users to setup
228 their qmail_local processes in as secure a method as possible.
229
230 The following file types are defined for qmail_local:
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234 qmail_local_exec_t
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236 - Set files with the qmail_local_exec_t type, if you want to transition
237 an executable to the qmail_local_t domain.
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241 Note: File context can be temporarily modified with the chcon command.
242 If you want to permanently change the file context you need to use the
243 semanage fcontext command. This will modify the SELinux labeling data‐
244 base. You will need to use restorecon to apply the labels.
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248 semanage fcontext can also be used to manipulate default file context
249 mappings.
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251 semanage permissive can also be used to manipulate whether or not a
252 process type is permissive.
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254 semanage module can also be used to enable/disable/install/remove pol‐
255 icy modules.
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257 semanage boolean can also be used to manipulate the booleans
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260 system-config-selinux is a GUI tool available to customize SELinux pol‐
261 icy settings.
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265 This manual page was auto-generated using sepolicy manpage .
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269 selinux(8), qmail_local(8), semanage(8), restorecon(8), chcon(1),
270 sepolicy(8) , setsebool(8)
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274qmail_local 19-04-25 qmail_local_selinux(8)