1sysadm_su_selinux(8) SELinux Policy sysadm_su sysadm_su_selinux(8)
2
3
4
6 sysadm_su_selinux - Security Enhanced Linux Policy for the sysadm_su
7 processes
8
10 Security-Enhanced Linux secures the sysadm_su processes via flexible
11 mandatory access control.
12
13 The sysadm_su processes execute with the sysadm_su_t SELinux type. You
14 can check if you have these processes running by executing the ps com‐
15 mand with the -Z qualifier.
16
17 For example:
18
19 ps -eZ | grep sysadm_su_t
20
21
22
24 The sysadm_su_t SELinux type can be entered via the su_exec_t file
25 type.
26
27 The default entrypoint paths for the sysadm_su_t domain are the follow‐
28 ing:
29
30 /usr/(local/)?bin/ksu, /bin/su, /usr/bin/kdesu
31
33 SELinux defines process types (domains) for each process running on the
34 system
35
36 You can see the context of a process using the -Z option to ps
37
38 Policy governs the access confined processes have to files. SELinux
39 sysadm_su policy is very flexible allowing users to setup their
40 sysadm_su processes in as secure a method as possible.
41
42 The following process types are defined for sysadm_su:
43
44 sysadm_su_t, sysadm_sudo_t
45
46 Note: semanage permissive -a sysadm_su_t can be used to make the
47 process type sysadm_su_t permissive. SELinux does not deny access to
48 permissive process types, but the AVC (SELinux denials) messages are
49 still generated.
50
51
53 SELinux policy is customizable based on least access required.
54 sysadm_su policy is extremely flexible and has several booleans that
55 allow you to manipulate the policy and run sysadm_su with the tightest
56 access possible.
57
58
59
60 If you want to allow all domains to use other domains file descriptors,
61 you must turn on the allow_domain_fd_use boolean. Enabled by default.
62
63 setsebool -P allow_domain_fd_use 1
64
65
66
67 If you want to allow confined applications to run with kerberos, you
68 must turn on the allow_kerberos boolean. Enabled by default.
69
70 setsebool -P allow_kerberos 1
71
72
73
74 If you want to enable polyinstantiated directory support, you must turn
75 on the allow_polyinstantiation boolean. Enabled by default.
76
77 setsebool -P allow_polyinstantiation 1
78
79
80
81 If you want to allow sysadm to debug or ptrace all processes, you must
82 turn on the allow_ptrace boolean. Disabled by default.
83
84 setsebool -P allow_ptrace 1
85
86
87
88 If you want to allow system to run with NIS, you must turn on the
89 allow_ypbind boolean. Disabled by default.
90
91 setsebool -P allow_ypbind 1
92
93
94
95 If you want to allow all domains to have the kernel load modules, you
96 must turn on the domain_kernel_load_modules boolean. Disabled by
97 default.
98
99 setsebool -P domain_kernel_load_modules 1
100
101
102
103 If you want to allow all domains to execute in fips_mode, you must turn
104 on the fips_mode boolean. Enabled by default.
105
106 setsebool -P fips_mode 1
107
108
109
110 If you want to enable reading of urandom for all domains, you must turn
111 on the global_ssp boolean. Disabled by default.
112
113 setsebool -P global_ssp 1
114
115
116
117 If you want to allow confined applications to use nscd shared memory,
118 you must turn on the nscd_use_shm boolean. Enabled by default.
119
120 setsebool -P nscd_use_shm 1
121
122
123
124 If you want to support NFS home directories, you must turn on the
125 use_nfs_home_dirs boolean. Disabled by default.
126
127 setsebool -P use_nfs_home_dirs 1
128
129
130
131 If you want to support SAMBA home directories, you must turn on the
132 use_samba_home_dirs boolean. Disabled by default.
133
134 setsebool -P use_samba_home_dirs 1
135
136
137
139 The SELinux process type sysadm_su_t can manage files labeled with the
140 following file types. The paths listed are the default paths for these
141 file types. Note the processes UID still need to have DAC permissions.
142
143 faillog_t
144
145 /var/log/btmp.*
146 /var/log/faillog.*
147 /var/log/tallylog.*
148 /var/run/faillock(/.*)?
149
150 initrc_tmp_t
151
152
153 initrc_var_run_t
154
155 /var/run/utmp
156 /var/run/random-seed
157 /var/run/runlevel.dir
158 /var/run/setmixer_flag
159
160 krb5_host_rcache_t
161
162 /var/cache/krb5rcache(/.*)?
163 /var/tmp/host_0
164 /var/tmp/HTTP_23
165
166 lastlog_t
167
168 /var/log/lastlog.*
169
170 mnt_t
171
172 /mnt(/[^/]*)
173 /mnt(/[^/]*)?
174 /rhev(/[^/]*)?
175 /media(/[^/]*)
176 /media(/[^/]*)?
177 /etc/rhgb(/.*)?
178 /media/.hal-.*
179 /net
180 /afs
181 /rhev
182 /misc
183
184 pcscd_var_run_t
185
186 /var/run/pcscd.events(/.*)?
187 /var/run/pcscd.pid
188 /var/run/pcscd.pub
189 /var/run/pcscd.comm
190
191 security_t
192
193
194 tmp_t
195
196 /tmp
197 /usr/tmp
198 /var/tmp
199 /tmp-inst
200 /var/tmp-inst
201 /var/tmp/vi.recover
202
203 wtmp_t
204
205 /var/log/wtmp.*
206
207
209 semanage fcontext can also be used to manipulate default file context
210 mappings.
211
212 semanage permissive can also be used to manipulate whether or not a
213 process type is permissive.
214
215 semanage module can also be used to enable/disable/install/remove pol‐
216 icy modules.
217
218 semanage boolean can also be used to manipulate the booleans
219
220
221 system-config-selinux is a GUI tool available to customize SELinux pol‐
222 icy settings.
223
224
226 This manual page was auto-generated using sepolicy manpage .
227
228
230 selinux(8), sysadm_su(8), semanage(8), restorecon(8), chcon(1) , setse‐
231 bool(8)
232
233
234
235sysadm_su 15-06-03 sysadm_su_selinux(8)