1afs_fsserver_selinux(8) SELinux Policy afs_fsserver afs_fsserver_selinux(8)
2
6 afs_fsserver_selinux - Security Enhanced Linux Policy for the
7 afs_fsserver processes
8
10 Security-Enhanced Linux secures the afs_fsserver processes via flexible
11 mandatory access control.
12 The afs_fsserver processes execute with the afs_fsserver_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 afs_fsserver_t
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24 The afs_fsserver_t SELinux type can be entered via the
25 afs_fsserver_exec_t file type.
26 The default entrypoint paths for the afs_fsserver_t domain are the fol‐
28 lowing:
29 /usr/afs/bin/salvager, /usr/afs/bin/volserver, /usr/afs/bin/fileserver,
31 /usr/afs/bin/dasalvager, /usr/afs/bin/davolserver, /usr/afs/bin/dafile‐
32 server, /usr/afs/bin/salvageserver, /usr/libexec/openafs/salvager,
33 /usr/libexec/openafs/volserver, /usr/libexec/openafs/fileserver
34
36 SELinux defines process types (domains) for each process running on the
37 system
38 You can see the context of a process using the -Z option to ps
40 Policy governs the access confined processes have to files. SELinux
42 afs_fsserver policy is very flexible allowing users to setup their
43 afs_fsserver processes in as secure a method as possible.
44 The following process types are defined for afs_fsserver:
46 afs_fsserver_t
48 Note: semanage permissive -a afs_fsserver_t can be used to make the
50 process type afs_fsserver_t permissive. SELinux does not deny access to
51 permissive process types, but the AVC (SELinux denials) messages are
52 still generated.
53
56 SELinux policy is customizable based on least access required.
57 afs_fsserver policy is extremely flexible and has several booleans that
58 allow you to manipulate the policy and run afs_fsserver with the tight‐
59 est access possible.
60 If you want to deny any process from ptracing or debugging any other
64 processes, you must turn on the deny_ptrace boolean. Enabled by
65 default.
66 setsebool -P deny_ptrace 1
68 If you want to allow any process to mmap any file on system with
72 attribute file_type, you must turn on the domain_can_mmap_files bool‐
73 ean. Enabled by default.
74 setsebool -P domain_can_mmap_files 1
76 If you want to allow all domains write to kmsg_device, while kernel is
80 executed with systemd.log_target=kmsg parameter, you must turn on the
81 domain_can_write_kmsg boolean. Disabled by default.
82 setsebool -P domain_can_write_kmsg 1
84 If you want to allow all domains to use other domains file descriptors,
88 you must turn on the domain_fd_use boolean. Enabled by default.
89 setsebool -P domain_fd_use 1
91 If you want to allow all domains to have the kernel load modules, you
95 must turn on the domain_kernel_load_modules boolean. Disabled by
96 default.
97 setsebool -P domain_kernel_load_modules 1
99 If you want to allow all domains to execute in fips_mode, you must turn
103 on the fips_mode boolean. Enabled by default.
104 setsebool -P fips_mode 1
106 If you want to enable reading of urandom for all domains, you must turn
110 on the global_ssp boolean. Disabled by default.
111 setsebool -P global_ssp 1
113
117 The SELinux process type afs_fsserver_t can manage files labeled with
118 the following file types. The paths listed are the default paths for
119 these file types. Note the processes UID still need to have DAC per‐
120 missions.
121 afs_config_t
123 /etc/(open)?afs(/.*)?
125 /usr/afs/etc(/.*)?
126 /usr/afs/local(/.*)?
127 afs_files_t
129 /usr/afs(/.*)?
131 /vicepa
132 /vicepb
133 /vicepc
134 afs_logfile_t
136 /usr/afs/logs(/.*)?
138
141 SELinux requires files to have an extended attribute to define the file
142 type.
143 You can see the context of a file using the -Z option to ls
145 Policy governs the access confined processes have to these files.
147 SELinux afs_fsserver policy is very flexible allowing users to setup
148 their afs_fsserver processes in as secure a method as possible.
149 The following file types are defined for afs_fsserver:
151 afs_fsserver_exec_t
155 - Set files with the afs_fsserver_exec_t type, if you want to transi‐
157 tion an executable to the afs_fsserver_t domain.
158 Paths:
161 /usr/afs/bin/salvager, /usr/afs/bin/volserver, /usr/afs/bin/file‐
162 server, /usr/afs/bin/dasalvager, /usr/afs/bin/davolserver,
163 /usr/afs/bin/dafileserver, /usr/afs/bin/salvageserver,
164 /usr/libexec/openafs/salvager, /usr/libexec/openafs/volserver,
165 /usr/libexec/openafs/fileserver
166 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.
189
192 This manual page was auto-generated using sepolicy manpage .
193
196 selinux(8), afs_fsserver(8), semanage(8), restorecon(8), chcon(1),
197 sepolicy(8) , setsebool(8)
198afs_fsserver 19-04-25 afs_fsserver_selinux(8)