1lpr_selinux(8) SELinux Policy lpr lpr_selinux(8)
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6 lpr_selinux - Security Enhanced Linux Policy for the lpr processes
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9 Security-Enhanced Linux secures the lpr processes via flexible manda‐
10 tory access control.
11 The lpr processes execute with the lpr_t SELinux type. You can check if
13 you have these processes running by executing the ps command with the
14 -Z qualifier.
15 For example:
17 ps -eZ | grep lpr_t
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23 The lpr_t SELinux type can be entered via the lpr_exec_t file type.
24 The default entrypoint paths for the lpr_t domain are the following:
26 /usr/bin/lp(.cups)?, /usr/bin/lpq(.cups)?, /usr/bin/lpr(.cups)?,
28 /usr/bin/lprm(.cups)?, /usr/sbin/lpc(.cups)?, /usr/bin/cancel(.cups)?,
29 /usr/bin/lpstat(.cups)?, /opt/gutenprint/bin(/.*)?, /opt/guten‐
30 print/sbin(/.*)?, /usr/linuxprinter/bin/l?lpr, /usr/local/linux‐
31 printer/bin/l?lpr, /usr/sbin/accept, /usr/sbin/lpinfo,
32 /usr/sbin/lpmove, /usr/sbin/lpadmin, /usr/bin/lpoptions
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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 lpr policy is very flexible allowing users to setup their lpr processes
42 in as secure a method as possible.
43 The following process types are defined for lpr:
45 lpr_t
47 Note: semanage permissive -a lpr_t can be used to make the process type
49 lpr_t permissive. SELinux does not deny access to permissive process
50 types, but the AVC (SELinux denials) messages are still generated.
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54 SELinux policy is customizable based on least access required. lpr
55 policy is extremely flexible and has several booleans that allow you to
56 manipulate the policy and run lpr with the tightest 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. Enabled 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. Enabled by default.
91 setsebool -P nscd_use_shm 1
93 If you want to determine whether to support lpd server, you must turn
97 on the use_lpd_server boolean. Disabled by default.
98 setsebool -P use_lpd_server 1
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104 The SELinux process type lpr_t can manage files labeled with the fol‐
105 lowing file types. The paths listed are the default paths for these
106 file types. Note the processes UID still need to have DAC permissions.
107 lpr_tmp_t
109 print_spool_t
112 /var/spool/lpd(/.*)?
114 /var/spool/cups(/.*)?
115 /var/spool/cups-pdf(/.*)?
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119 SELinux requires files to have an extended attribute to define the file
120 type.
121 You can see the context of a file using the -Z option to ls
123 Policy governs the access confined processes have to these files.
125 SELinux lpr policy is very flexible allowing users to setup their lpr
126 processes in as secure a method as possible.
127 STANDARD FILE CONTEXT
129 SELinux defines the file context types for the lpr, if you wanted to
131 store files with these types in a diffent paths, you need to execute
132 the semanage command to sepecify alternate labeling and then use
133 restorecon to put the labels on disk.
134 semanage fcontext -a -t lpr_tmp_t '/srv/mylpr_content(/.*)?'
136 restorecon -R -v /srv/mylpr_content
137 Note: SELinux often uses regular expressions to specify labels that
139 match multiple files.
140 The following file types are defined for lpr:
142 lpr_exec_t
146 - Set files with the lpr_exec_t type, if you want to transition an exe‐
148 cutable to the lpr_t domain.
149 Paths:
152 /usr/bin/lp(.cups)?, /usr/bin/lpq(.cups)?, /usr/bin/lpr(.cups)?,
153 /usr/bin/lprm(.cups)?, /usr/sbin/lpc(.cups)?, /usr/bin/can‐
154 cel(.cups)?, /usr/bin/lpstat(.cups)?, /opt/gutenprint/bin(/.*)?,
155 /opt/gutenprint/sbin(/.*)?, /usr/linuxprinter/bin/l?lpr,
156 /usr/local/linuxprinter/bin/l?lpr, /usr/sbin/accept,
157 /usr/sbin/lpinfo, /usr/sbin/lpmove, /usr/sbin/lpadmin,
158 /usr/bin/lpoptions
159 lpr_tmp_t
162 - Set files with the lpr_tmp_t type, if you want to store lpr temporary
164 files in the /tmp directories.
165 Note: File context can be temporarily modified with the chcon command.
169 If you want to permanently change the file context you need to use the
170 semanage fcontext command. This will modify the SELinux labeling data‐
171 base. You will need to use restorecon to apply the labels.
172
175 semanage fcontext can also be used to manipulate default file context
176 mappings.
177 semanage permissive can also be used to manipulate whether or not a
179 process type is permissive.
180 semanage module can also be used to enable/disable/install/remove pol‐
182 icy modules.
183 semanage boolean can also be used to manipulate the booleans
185 system-config-selinux is a GUI tool available to customize SELinux pol‐
188 icy settings.
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192 This manual page was auto-generated using sepolicy manpage .
193
196 selinux(8), lpr(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
197 setsebool(8)
198lpr 19-10-08 lpr_selinux(8)