1alsa_selinux(8)               SELinux Policy alsa              alsa_selinux(8)
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NAME

6       alsa_selinux - Security Enhanced Linux Policy for the alsa processes
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DESCRIPTION

9       Security-Enhanced  Linux secures the alsa processes via flexible manda‐
10       tory access control.
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12       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.
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16       For example:
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18       ps -eZ | grep alsa_t
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ENTRYPOINTS

23       The alsa_t SELinux type can be entered via the alsa_exec_t file type.
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25       The default entrypoint paths for the alsa_t domain are the following:
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27       /sbin/salsa,    /sbin/alsactl,     /usr/bin/ainit,     /bin/alsaunmute,
28       /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
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PROCESS TYPES

31       SELinux defines process types (domains) for each process running on the
32       system
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34       You can see the context of a process using the -Z option to ps
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36       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.
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40       The following process types are defined for alsa:
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42       alsa_t
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44       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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BOOLEANS

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.
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57       If you want to allow all domains to execute in fips_mode, you must turn
58       on the fips_mode boolean. Enabled by default.
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60       setsebool -P fips_mode 1
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64       If you want to allow system to run with  NIS,  you  must  turn  on  the
65       nis_enabled boolean. Disabled by default.
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67       setsebool -P nis_enabled 1
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MANAGED FILES

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.
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76       alsa_etc_rw_t
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78            /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
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85       alsa_lock_t
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87            /var/lock/asound.state.lock
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89       alsa_tmp_t
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92       alsa_tmpfs_t
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95       alsa_var_lib_t
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97            /var/lib/alsa(/.*)?
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99       alsa_var_run_t
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101            /var/run/alsactl.pid
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103       krb5_host_rcache_t
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105            /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
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117       sysfs_t
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119            /sys(/.*)?
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FILE CONTEXTS

123       SELinux requires files to have an extended attribute to define the file
124       type.
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126       You can see the context of a file using the -Z option to ls
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128       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.
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132       STANDARD FILE CONTEXT
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134       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.
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139       semanage fcontext -a -t alsa_exec_t '/srv/alsa/content(/.*)?'
140       restorecon -R -v /srv/myalsa_content
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142       Note:  SELinux  often  uses  regular expressions to specify labels that
143       match multiple files.
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145       The following file types are defined for alsa:
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149       alsa_etc_rw_t
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151       - Set files with the alsa_etc_rw_t type, if you want to treat the files
152       as alsa etc read/write content.
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154
155       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
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161       alsa_exec_t
162
163       - Set files with the alsa_exec_t type, if you want to transition an ex‐
164       ecutable to the alsa_t domain.
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167       Paths:
168            /sbin/salsa,   /sbin/alsactl,   /usr/bin/ainit,   /bin/alsaunmute,
169            /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
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172       alsa_home_t
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174       -  Set files with the alsa_home_t type, if you want to store alsa files
175       in the users home directory.
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179       alsa_lock_t
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181       - 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
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186       alsa_tmp_t
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188       -  Set files with the alsa_tmp_t type, if you want to store alsa tempo‐
189       rary files in the /tmp directories.
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193       alsa_tmpfs_t
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195       - Set files with the alsa_tmpfs_t type, if you want to store alsa files
196       on a tmpfs file system.
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200       alsa_unit_file_t
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202       -  Set  files  with the alsa_unit_file_t type, if you want to treat the
203       files as alsa unit content.
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207       alsa_var_lib_t
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209       - Set files with the alsa_var_lib_t type, if you want to store the alsa
210       files under the /var/lib directory.
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214       alsa_var_run_t
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216       - 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.
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221       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.
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COMMANDS

228       semanage  fcontext  can also be used to manipulate default file context
229       mappings.
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231       semanage permissive can also be used to manipulate  whether  or  not  a
232       process type is permissive.
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234       semanage  module can also be used to enable/disable/install/remove pol‐
235       icy modules.
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237       semanage boolean can also be used to manipulate the booleans
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239
240       system-config-selinux is a GUI tool available to customize SELinux pol‐
241       icy settings.
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AUTHOR

245       This manual page was auto-generated using sepolicy manpage .
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SEE ALSO

249       selinux(8), alsa(8), semanage(8), restorecon(8), chcon(1), sepolicy(8),
250       setsebool(8)
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254alsa                               23-10-20                    alsa_selinux(8)
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