fsadm_selinux(8)

1fsadm_selinux(8)             SELinux Policy fsadm             fsadm_selinux(8)
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NAME

6       fsadm_selinux - Security Enhanced Linux Policy for the fsadm processes
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DESCRIPTION

9       Security-Enhanced Linux secures the fsadm processes via flexible manda‐
10       tory access control.
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12       The fsadm processes execute with the  fsadm_t  SELinux  type.  You  can
13       check  if  you have these processes running by executing the ps command
14       with the -Z qualifier.
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16       For example:
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18       ps -eZ | grep fsadm_t
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ENTRYPOINTS

23       The fsadm_t SELinux type can be entered via the fsadm_exec_t file type.
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25       The default entrypoint paths for the fsadm_t domain are the following:
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27       /sbin/fsck.*,     /sbin/jfs_.*,     /sbin/mkfs.*,     /sbin/dump.exfat,
28       /sbin/tune.exfat,  /sbin/swapon.*,  /sbin/resize.*fs,  /sbin/losetup.*,
29       /usr/sbin/fsck.*,          /usr/sbin/jfs_.*,          /usr/sbin/mkfs.*,
30       /usr/sbin/dump.exfat,   /usr/sbin/tune.exfat,  /sbin/reiserfs(ck|tune),
31       /usr/sbin/swapon.*,     /usr/sbin/resize.*fs,      /usr/sbin/losetup.*,
32       /usr/sbin/reiserfs(ck|tune),   /sbin/dump,   /sbin/blkid,  /sbin/fdisk,
33       /sbin/partx, /sbin/cfdisk,  /sbin/e2fsck,  /sbin/e4fsck,  /sbin/findfs,
34       /sbin/hdparm,  /sbin/lsraid,  /sbin/mke2fs, /sbin/mke4fs, /sbin/mkraid,
35       /sbin/parted, /sbin/sfdisk, /usr/bin/raw, /sbin/dosfsck, /sbin/e2label,
36       /sbin/mkdosfs,     /sbin/swapoff,     /sbin/tune2fs,    /sbin/blockdev,
37       /sbin/dumpe2fs,   /usr/sbin/dump,   /sbin/partprobe,   /sbin/raidstart,
38       /sbin/scsi_info,   /usr/sbin/blkid,  /usr/sbin/fdisk,  /usr/sbin/partx,
39       /sbin/exfatlabel, /sbin/mkreiserfs, /sbin/xfs_growfs, /usr/sbin/cfdisk,
40       /usr/sbin/e2fsck, /usr/sbin/e4fsck, /usr/sbin/findfs, /usr/sbin/hdparm,
41       /usr/sbin/lsraid, /usr/sbin/mke2fs, /usr/sbin/mke4fs, /usr/sbin/mkraid,
42       /usr/sbin/parted,  /usr/sbin/sfdisk,  /sbin/e2mmpstatus, /sbin/install-
43       mbr,    /sbin/raidautorun,    /usr/bin/syslinux,     /usr/sbin/dosfsck,
44       /usr/sbin/e2label,         /usr/sbin/mkdosfs,        /usr/sbin/mkudffs,
45       /usr/sbin/swapoff,        /usr/sbin/tune2fs,        /sbin/make_reiser4,
46       /usr/sbin/blockdev,       /usr/sbin/dumpe2fs,       /usr/sbin/pktsetup,
47       /usr/sbin/smartctl,      /usr/sbin/udflabel,       /usr/sbin/partprobe,
48       /usr/sbin/raidstart,     /usr/sbin/scsi_info,     /usr/sbin/exfatlabel,
49       /usr/sbin/mkreiserfs,   /usr/sbin/xfs_growfs,    /usr/sbin/clubufflush,
50       /usr/sbin/e2mmpstatus,   /usr/sbin/install-mbr,  /usr/sbin/raidautorun,
51       /usr/sbin/make_reiser4,                        /usr/bin/partition_uuid,
52       /usr/bin/scsi_unique_id, /usr/sbin/pktcdvd-check, /usr/lib/systemd/sys‐
53       temd-fsck,  /usr/lib/systemd/systemd-growfs,  /usr/lib/systemd/systemd-
54       makefs
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PROCESS TYPES

57       SELinux defines process types (domains) for each process running on the
58       system
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60       You can see the context of a process using the -Z option to ps
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62       Policy governs the access confined processes have  to  files.   SELinux
63       fsadm  policy is very flexible allowing users to setup their fsadm pro‐
64       cesses in as secure a method as possible.
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66       The following process types are defined for fsadm:
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68       fsadm_t
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70       Note: semanage permissive -a fsadm_t can be used to  make  the  process
71       type  fsadm_t  permissive.  SELinux  does not deny access to permissive
72       process types, but the AVC (SELinux denials) messages are still  gener‐
73       ated.
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BOOLEANS

77       SELinux  policy  is customizable based on least access required.  fsadm
78       policy is extremely flexible and has several booleans that allow you to
79       manipulate the policy and run fsadm with the tightest access possible.
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83       If you want to deny user domains applications to map a memory region as
84       both executable and writable, this  is  dangerous  and  the  executable
85       should be reported in bugzilla, you must turn on the deny_execmem bool‐
86       ean. Disabled by default.
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88       setsebool -P deny_execmem 1
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92       If you want to control the ability to mmap a low area  of  the  address
93       space,  as  configured  by /proc/sys/vm/mmap_min_addr, you must turn on
94       the mmap_low_allowed boolean. Disabled by default.
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96       setsebool -P mmap_low_allowed 1
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100       If you want to allow system to run with  NIS,  you  must  turn  on  the
101       nis_enabled boolean. Disabled by default.
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103       setsebool -P nis_enabled 1
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107       If  you want to disable kernel module loading, you must turn on the se‐
108       cure_mode_insmod boolean. Disabled by default.
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110       setsebool -P secure_mode_insmod 1
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114       If you want to allow unconfined executables to make their  heap  memory
115       executable.   Doing  this  is  a  really bad idea. Probably indicates a
116       badly coded executable, but could indicate an attack.  This  executable
117       should  be  reported  in bugzilla, you must turn on the selinuxuser_ex‐
118       echeap boolean. Disabled by default.
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120       setsebool -P selinuxuser_execheap 1
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124       If you want to allow unconfined executables to make  their  stack  exe‐
125       cutable.   This  should  never, ever be necessary. Probably indicates a
126       badly coded executable, but could indicate an attack.  This  executable
127       should  be reported in bugzilla, you must turn on the selinuxuser_exec‐
128       stack boolean. Enabled by default.
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130       setsebool -P selinuxuser_execstack 1
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MANAGED FILES

135       The SELinux process type fsadm_t can manage files labeled with the fol‐
136       lowing  file  types.   The paths listed are the default paths for these
137       file types.  Note the processes UID still need to have DAC permissions.
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139       file_type
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141            all files on the system
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FILE CONTEXTS

145       SELinux requires files to have an extended attribute to define the file
146       type.
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148       You can see the context of a file using the -Z option to ls
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150       Policy  governs  the  access  confined  processes  have to these files.
151       SELinux fsadm policy is very flexible allowing  users  to  setup  their
152       fsadm processes in as secure a method as possible.
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154       STANDARD FILE CONTEXT
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156       SELinux  defines the file context types for the fsadm, if you wanted to
157       store files with these types in a different paths, you need to  execute
158       the  semanage  command  to  specify alternate labeling and then use re‐
159       storecon to put the labels on disk.
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161       semanage fcontext -a -t fsadm_exec_t '/srv/fsadm/content(/.*)?'
162       restorecon -R -v /srv/myfsadm_content
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164       Note: SELinux often uses regular expressions  to  specify  labels  that
165       match multiple files.
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167       The following file types are defined for fsadm:
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171       fsadm_exec_t
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173       -  Set  files  with the fsadm_exec_t type, if you want to transition an
174       executable to the fsadm_t domain.
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177       Paths:
178            /sbin/fsck.*,   /sbin/jfs_.*,   /sbin/mkfs.*,    /sbin/dump.exfat,
179            /sbin/tune.exfat,   /sbin/swapon.*,  /sbin/resize.*fs,  /sbin/los‐
180            etup.*,  /usr/sbin/fsck.*,   /usr/sbin/jfs_.*,   /usr/sbin/mkfs.*,
181            /usr/sbin/dump.exfat,       /usr/sbin/tune.exfat,      /sbin/reis‐
182            erfs(ck|tune),      /usr/sbin/swapon.*,      /usr/sbin/resize.*fs,
183            /usr/sbin/losetup.*,    /usr/sbin/reiserfs(ck|tune),   /sbin/dump,
184            /sbin/blkid, /sbin/fdisk, /sbin/partx, /sbin/cfdisk, /sbin/e2fsck,
185            /sbin/e4fsck,     /sbin/findfs,     /sbin/hdparm,    /sbin/lsraid,
186            /sbin/mke2fs,    /sbin/mke4fs,     /sbin/mkraid,     /sbin/parted,
187            /sbin/sfdisk,    /usr/bin/raw,    /sbin/dosfsck,    /sbin/e2label,
188            /sbin/mkdosfs,   /sbin/swapoff,   /sbin/tune2fs,   /sbin/blockdev,
189            /sbin/dumpe2fs,  /usr/sbin/dump, /sbin/partprobe, /sbin/raidstart,
190            /sbin/scsi_info,         /usr/sbin/blkid,         /usr/sbin/fdisk,
191            /usr/sbin/partx,        /sbin/exfatlabel,        /sbin/mkreiserfs,
192            /sbin/xfs_growfs,       /usr/sbin/cfdisk,        /usr/sbin/e2fsck,
193            /usr/sbin/e4fsck,        /usr/sbin/findfs,       /usr/sbin/hdparm,
194            /usr/sbin/lsraid,       /usr/sbin/mke2fs,        /usr/sbin/mke4fs,
195            /usr/sbin/mkraid, /usr/sbin/parted, /usr/sbin/sfdisk, /sbin/e2mmp‐
196            status, /sbin/install-mbr,  /sbin/raidautorun,  /usr/bin/syslinux,
197            /usr/sbin/dosfsck,      /usr/sbin/e2label,      /usr/sbin/mkdosfs,
198            /usr/sbin/mkudffs,      /usr/sbin/swapoff,      /usr/sbin/tune2fs,
199            /sbin/make_reiser4,     /usr/sbin/blockdev,    /usr/sbin/dumpe2fs,
200            /usr/sbin/pktsetup,    /usr/sbin/smartctl,     /usr/sbin/udflabel,
201            /usr/sbin/partprobe,   /usr/sbin/raidstart,   /usr/sbin/scsi_info,
202            /usr/sbin/exfatlabel, /usr/sbin/mkreiserfs,  /usr/sbin/xfs_growfs,
203            /usr/sbin/clubufflush,  /usr/sbin/e2mmpstatus,  /usr/sbin/install-
204            mbr, /usr/sbin/raidautorun, /usr/sbin/make_reiser4,  /usr/bin/par‐
205            tition_uuid,   /usr/bin/scsi_unique_id,   /usr/sbin/pktcdvd-check,
206            /usr/lib/systemd/systemd-fsck,    /usr/lib/systemd/systemd-growfs,
207            /usr/lib/systemd/systemd-makefs
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210       fsadm_log_t
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212       - Set files with the fsadm_log_t type, if you want to treat the data as
213       fsadm log data, usually stored under the /var/log directory.
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217       fsadm_tmp_t
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219       - Set files with the fsadm_tmp_t type, if you want to store fsadm  tem‐
220       porary files in the /tmp directories.
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224       fsadm_tmpfs_t
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226       -  Set  files  with  the fsadm_tmpfs_t type, if you want to store fsadm
227       files on a tmpfs file system.
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231       fsadm_var_run_t
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233       - Set files with the fsadm_var_run_t type, if you  want  to  store  the
234       fsadm files under the /run or /var/run directory.
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237       Paths:
238            /var/run/fsck(/.*)?, /var/run/blkid(/.*)?
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241       Note:  File context can be temporarily modified with the chcon command.
242       If you want to permanently change the file context you need to use  the
243       semanage fcontext command.  This will modify the SELinux labeling data‐
244       base.  You will need to use restorecon to apply the labels.
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COMMANDS

248       semanage fcontext can also be used to manipulate default  file  context
249       mappings.
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251       semanage  permissive  can  also  be used to manipulate whether or not a
252       process type is permissive.
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254       semanage module can also be used to enable/disable/install/remove  pol‐
255       icy modules.
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257       semanage boolean can also be used to manipulate the booleans
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260       system-config-selinux is a GUI tool available to customize SELinux pol‐
261       icy settings.
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AUTHOR

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