alsa_selinux(8)

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 users to resolve user passwd entries directly from
58       ldap rather then using a sssd server, you  must  turn  on  the  authlo‐
59       gin_nsswitch_use_ldap boolean. Disabled by default.
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61       setsebool -P authlogin_nsswitch_use_ldap 1
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65       If you want to allow all domains to execute in fips_mode, you must turn
66       on the fips_mode boolean. Enabled by default.
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68       setsebool -P fips_mode 1
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72       If you want to allow confined applications to run  with  kerberos,  you
73       must turn on the kerberos_enabled boolean. Enabled by default.
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75       setsebool -P kerberos_enabled 1
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79       If  you  want  to  allow  system  to run with NIS, you must turn on the
80       nis_enabled boolean. Disabled by default.
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82       setsebool -P nis_enabled 1
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86       If you want to allow confined applications to use nscd  shared  memory,
87       you must turn on the nscd_use_shm boolean. Disabled by default.
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89       setsebool -P nscd_use_shm 1
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MANAGED FILES

94       The  SELinux process type alsa_t can manage files labeled with the fol‐
95       lowing file types.  The paths listed are the default  paths  for  these
96       file types.  Note the processes UID still need to have DAC permissions.
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98       alsa_etc_rw_t
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100            /etc/asound(/.*)?
101            /etc/alsa/pcm(/.*)?
102            /usr/share/alsa/pcm(/.*)?
103            /etc/asound.state
104            /etc/alsa/asound.state
105            /usr/share/alsa/alsa.conf
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107       alsa_lock_t
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109            /var/lock/asound.state.lock
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111       alsa_tmp_t
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114       alsa_tmpfs_t
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117       alsa_var_lib_t
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119            /var/lib/alsa(/.*)?
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121       alsa_var_run_t
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123            /var/run/alsactl.pid
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FILE CONTEXTS

127       SELinux requires files to have an extended attribute to define the file
128       type.
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130       You can see the context of a file using the -Z option to ls
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132       Policy governs the access  confined  processes  have  to  these  files.
133       SELinux alsa policy is very flexible allowing users to setup their alsa
134       processes in as secure a method as possible.
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136       STANDARD FILE CONTEXT
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138       SELinux defines the file context types for the alsa, if you  wanted  to
139       store  files  with  these types in a diffent paths, you need to execute
140       the semanage command  to  sepecify  alternate  labeling  and  then  use
141       restorecon to put the labels on disk.
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143       semanage fcontext -a -t alsa_unit_file_t '/srv/myalsa_content(/.*)?'
144       restorecon -R -v /srv/myalsa_content
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146       Note:  SELinux  often  uses  regular expressions to specify labels that
147       match multiple files.
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149       The following file types are defined for alsa:
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153       alsa_etc_rw_t
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155       - Set files with the alsa_etc_rw_t type, if you want to treat the files
156       as alsa etc read/write content.
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159       Paths:
160            /etc/asound(/.*)?, /etc/alsa/pcm(/.*)?, /usr/share/alsa/pcm(/.*)?,
161            /etc/asound.state,                         /etc/alsa/asound.state,
162            /usr/share/alsa/alsa.conf
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165       alsa_exec_t
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167       -  Set  files  with  the alsa_exec_t type, if you want to transition an
168       executable to the alsa_t domain.
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171       Paths:
172            /sbin/salsa,   /sbin/alsactl,   /usr/bin/ainit,   /bin/alsaunmute,
173            /usr/sbin/salsa, /usr/sbin/alsactl, /usr/bin/alsaunmute
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176       alsa_home_t
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178       -  Set files with the alsa_home_t type, if you want to store alsa files
179       in the users home directory.
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183       alsa_lock_t
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185       - Set files with the alsa_lock_t type, if you want to treat  the  files
186       as alsa lock data, stored under the /var/lock directory
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190       alsa_tmp_t
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192       -  Set files with the alsa_tmp_t type, if you want to store alsa tempo‐
193       rary files in the /tmp directories.
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197       alsa_tmpfs_t
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199       - Set files with the alsa_tmpfs_t type, if you want to store alsa files
200       on a tmpfs file system.
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204       alsa_unit_file_t
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206       -  Set  files  with the alsa_unit_file_t type, if you want to treat the
207       files as alsa unit content.
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211       alsa_var_lib_t
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213       - Set files with the alsa_var_lib_t type, if you want to store the alsa
214       files under the /var/lib directory.
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218       alsa_var_run_t
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220       - Set files with the alsa_var_run_t type, if you want to store the alsa
221       files under the /run or /var/run directory.
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225       Note: File context can be temporarily modified with the chcon  command.
226       If  you want to permanently change the file context you need to use the
227       semanage fcontext command.  This will modify the SELinux labeling data‐
228       base.  You will need to use restorecon to apply the labels.
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COMMANDS

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

249       This manual page was auto-generated using sepolicy manpage .
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