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
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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 sysfs_t
118 /sys(/.*)?
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123 SELinux requires files to have an extended attribute to define the file
124 type.
125 You can see the context of a file using the -Z option to ls
127 Policy governs the access confined processes have to these files.
129 SELinux alsa policy is very flexible allowing users to setup their alsa
130 processes in as secure a method as possible.
131 STANDARD FILE CONTEXT
133 SELinux defines the file context types for the alsa, if you wanted to
135 store files with these types in a different paths, you need to execute
136 the semanage command to specify alternate labeling and then use re‐
137 storecon to put the labels on disk.
138 semanage fcontext -a -t alsa_exec_t '/srv/alsa/content(/.*)?'
140 restorecon -R -v /srv/myalsa_content
141 Note: SELinux often uses regular expressions to specify labels that
143 match multiple files.
144 The following file types are defined for alsa:
146 alsa_etc_rw_t
150 - Set files with the alsa_etc_rw_t type, if you want to treat the files
152 as alsa etc read/write content.
153 Paths:
156 /etc/asound(/.*)?, /etc/alsa/pcm(/.*)?, /usr/share/alsa/pcm(/.*)?,
157 /etc/asound.state, /etc/alsa/asound.state,
158 /usr/share/alsa/alsa.conf
159 alsa_exec_t
162 - Set files with the alsa_exec_t type, if you want to transition an ex‐
164 ecutable to the alsa_t domain.
165 Paths:
168 /sbin/salsa, /sbin/alsactl, /usr/bin/ainit, /bin/alsaunmute,
169 /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
170 alsa_home_t
173 - Set files with the alsa_home_t type, if you want to store alsa files
175 in the users home directory.
176 alsa_lock_t
180 - Set files with the alsa_lock_t type, if you want to treat the files
182 as alsa lock data, stored under the /var/lock directory
183 alsa_tmp_t
187 - Set files with the alsa_tmp_t type, if you want to store alsa tempo‐
189 rary files in the /tmp directories.
190 alsa_tmpfs_t
194 - Set files with the alsa_tmpfs_t type, if you want to store alsa files
196 on a tmpfs file system.
197 alsa_unit_file_t
201 - Set files with the alsa_unit_file_t type, if you want to treat the
203 files as alsa unit content.
204 alsa_var_lib_t
208 - Set files with the alsa_var_lib_t type, if you want to store the alsa
210 files under the /var/lib directory.
211 alsa_var_run_t
215 - Set files with the alsa_var_run_t type, if you want to store the alsa
217 files under the /run or /var/run directory.
218 Note: File context can be temporarily modified with the chcon command.
222 If you want to permanently change the file context you need to use the
223 semanage fcontext command. This will modify the SELinux labeling data‐
224 base. You will need to use restorecon to apply the labels.
225
228 semanage fcontext can also be used to manipulate default file context
229 mappings.
230 semanage permissive can also be used to manipulate whether or not a
232 process type is permissive.
233 semanage module can also be used to enable/disable/install/remove pol‐
235 icy modules.
236 semanage boolean can also be used to manipulate the booleans
238 system-config-selinux is a GUI tool available to customize SELinux pol‐
241 icy settings.
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245 This manual page was auto-generated using sepolicy manpage .
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249 selinux(8), alsa(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
250 setsebool(8)
251alsa 23-10-20 alsa_selinux(8)