1alsa_selinux(8) SELinux Policy alsa alsa_selinux(8)
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6 alsa_selinux - Security Enhanced Linux Policy for the alsa processes
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9 Security-Enhanced Linux secures the alsa processes via flexible manda‐
10 tory access control.
11 The alsa processes execute with the alsa_t SELinux type. You can check
13 if you have these processes running by executing the ps command with
14 the -Z qualifier.
15 For example:
17 ps -eZ | grep alsa_t
19
23 The alsa_t SELinux type can be entered via the alsa_exec_t file type.
24 The default entrypoint paths for the alsa_t domain are the following:
26 /sbin/salsa, /sbin/alsactl, /usr/bin/ainit, /bin/alsaunmute,
28 /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
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31 SELinux defines process types (domains) for each process running on the
32 system
33 You can see the context of a process using the -Z option to ps
35 Policy governs the access confined processes have to files. SELinux
37 alsa policy is very flexible allowing users to setup their alsa pro‐
38 cesses in as secure a method as possible.
39 The following process types are defined for alsa:
41 alsa_t
43 Note: semanage permissive -a alsa_t can be used to make the process
45 type alsa_t permissive. SELinux does not deny access to permissive
46 process types, but the AVC (SELinux denials) messages are still gener‐
47 ated.
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51 SELinux policy is customizable based on least access required. alsa
52 policy is extremely flexible and has several booleans that allow you to
53 manipulate the policy and run alsa with the tightest access possible.
54 If you want to allow all domains to execute in fips_mode, you must turn
58 on the fips_mode boolean. Enabled by default.
59 setsebool -P fips_mode 1
61 If you want to allow system to run with NIS, you must turn on the
65 nis_enabled boolean. Disabled by default.
66 setsebool -P nis_enabled 1
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72 The SELinux process type alsa_t can manage files labeled with the fol‐
73 lowing file types. The paths listed are the default paths for these
74 file types. Note the processes UID still need to have DAC permissions.
75 alsa_etc_rw_t
77 /etc/asound(/.*)?
79 /etc/alsa/pcm(/.*)?
80 /usr/share/alsa/pcm(/.*)?
81 /etc/asound.state
82 /etc/alsa/asound.state
83 /usr/share/alsa/alsa.conf
84 alsa_lock_t
86 /var/lock/asound.state.lock
88 alsa_tmp_t
90 alsa_tmpfs_t
93 alsa_var_lib_t
96 /var/lib/alsa(/.*)?
98 alsa_var_run_t
100 /var/run/alsactl.pid
102 krb5_host_rcache_t
104 /var/tmp/krb5_0.rcache2
106 /var/cache/krb5rcache(/.*)?
107 /var/tmp/nfs_0
108 /var/tmp/DNS_25
109 /var/tmp/host_0
110 /var/tmp/imap_0
111 /var/tmp/HTTP_23
112 /var/tmp/HTTP_48
113 /var/tmp/ldap_55
114 /var/tmp/ldap_487
115 /var/tmp/ldapmap1_0
116
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 alsa policy is very flexible allowing users to setup their alsa
126 processes in as secure a method as possible.
127 STANDARD FILE CONTEXT
129 SELinux defines the file context types for the alsa, 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 re‐
133 storecon to put the labels on disk.
134 semanage fcontext -a -t alsa_unit_file_t '/srv/myalsa_content(/.*)?'
136 restorecon -R -v /srv/myalsa_content
137 Note: SELinux often uses regular expressions to specify labels that
139 match multiple files.
140 The following file types are defined for alsa:
142 alsa_etc_rw_t
146 - Set files with the alsa_etc_rw_t type, if you want to treat the files
148 as alsa etc read/write content.
149 Paths:
152 /etc/asound(/.*)?, /etc/alsa/pcm(/.*)?, /usr/share/alsa/pcm(/.*)?,
153 /etc/asound.state, /etc/alsa/asound.state,
154 /usr/share/alsa/alsa.conf
155 alsa_exec_t
158 - Set files with the alsa_exec_t type, if you want to transition an ex‐
160 ecutable to the alsa_t domain.
161 Paths:
164 /sbin/salsa, /sbin/alsactl, /usr/bin/ainit, /bin/alsaunmute,
165 /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
166 alsa_home_t
169 - Set files with the alsa_home_t type, if you want to store alsa files
171 in the users home directory.
172 alsa_lock_t
176 - Set files with the alsa_lock_t type, if you want to treat the files
178 as alsa lock data, stored under the /var/lock directory
179 alsa_tmp_t
183 - Set files with the alsa_tmp_t type, if you want to store alsa tempo‐
185 rary files in the /tmp directories.
186 alsa_tmpfs_t
190 - Set files with the alsa_tmpfs_t type, if you want to store alsa files
192 on a tmpfs file system.
193 alsa_unit_file_t
197 - Set files with the alsa_unit_file_t type, if you want to treat the
199 files as alsa unit content.
200 alsa_var_lib_t
204 - Set files with the alsa_var_lib_t type, if you want to store the alsa
206 files under the /var/lib directory.
207 alsa_var_run_t
211 - Set files with the alsa_var_run_t type, if you want to store the alsa
213 files under the /run or /var/run directory.
214 Note: File context can be temporarily modified with the chcon command.
218 If you want to permanently change the file context you need to use the
219 semanage fcontext command. This will modify the SELinux labeling data‐
220 base. You will need to use restorecon to apply the labels.
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224 semanage fcontext can also be used to manipulate default file context
225 mappings.
226 semanage permissive can also be used to manipulate whether or not a
228 process type is permissive.
229 semanage module can also be used to enable/disable/install/remove pol‐
231 icy modules.
232 semanage boolean can also be used to manipulate the booleans
234 system-config-selinux is a GUI tool available to customize SELinux pol‐
237 icy settings.
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241 This manual page was auto-generated using sepolicy manpage .
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245 selinux(8), alsa(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
246 setsebool(8)
247alsa 21-06-09 alsa_selinux(8)