1svirt_qemu_net_selinux(8)SELinux Policy svirt_qemu_netsvirt_qemu_net_selinux(8)
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6 svirt_qemu_net_selinux - Security Enhanced Linux Policy for the
7 svirt_qemu_net processes
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10 Security-Enhanced Linux secures the svirt_qemu_net processes via flexi‐
11 ble mandatory access control.
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13 The svirt_qemu_net processes execute with the svirt_qemu_net_t SELinux
14 type. You can check if you have these processes running by executing
15 the ps command with the -Z qualifier.
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17 For example:
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19 ps -eZ | grep svirt_qemu_net_t
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24 SELinux defines process types (domains) for each process running on the
25 system
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27 You can see the context of a process using the -Z option to ps
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29 Policy governs the access confined processes have to files. SELinux
30 svirt_qemu_net policy is very flexible allowing users to setup their
31 svirt_qemu_net processes in as secure a method as possible.
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33 The following process types are defined for svirt_qemu_net:
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35 svirt_qemu_net_t
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37 Note: semanage permissive -a svirt_qemu_net_t can be used to make the
38 process type svirt_qemu_net_t permissive. SELinux does not deny access
39 to permissive process types, but the AVC (SELinux denials) messages are
40 still generated.
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44 The SELinux process type svirt_qemu_net_t is an MCS (Multi Category
45 Security) constrained type. Sometimes this separation is referred to
46 as sVirt. These types are usually used for securing multi-tenant envi‐
47 ronments, such as virtualization, containers or separation of users.
48 The tools used to launch MCS types, pick out a different MCS label for
49 each process group.
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51 For example one process might be launched with
52 svirt_qemu_net_t:s0:c1,c2, and another process launched with
53 svirt_qemu_net_t:s0:c3,c4. The SELinux kernel only allows these pro‐
54 cesses can only write to content with a matching MCS label, or a MCS
55 Label of s0. A process running with the MCS level of s0:c1,c2 is not
56 allowed to write to content with the MCS label of s0:c3,c4
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60 SELinux policy is customizable based on least access required.
61 svirt_qemu_net policy is extremely flexible and has several booleans
62 that allow you to manipulate the policy and run svirt_qemu_net with the
63 tightest access possible.
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67 If you want to deny any process from ptracing or debugging any other
68 processes, you must turn on the deny_ptrace boolean. Enabled by
69 default.
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71 setsebool -P deny_ptrace 1
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75 If you want to allow sandbox containers to send audit messages, you
76 must turn on the virt_sandbox_use_audit boolean. Enabled by default.
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78 setsebool -P virt_sandbox_use_audit 1
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82 If you want to allow sandbox containers to use netlink system calls,
83 you must turn on the virt_sandbox_use_netlink boolean. Disabled by
84 default.
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86 setsebool -P virt_sandbox_use_netlink 1
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91 The SELinux process type svirt_qemu_net_t can manage files labeled with
92 the following file types. The paths listed are the default paths for
93 these file types. Note the processes UID still need to have DAC per‐
94 missions.
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96 cgroup_t
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98 /sys/fs/cgroup
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100 container_file_t
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102 /var/lib/rkt/cas(/.*)?
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104 fs_t
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107 fusefs_t
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109 /var/run/user/[^/]*/gvfs
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111 hugetlbfs_t
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113 /dev/hugepages
114 /usr/lib/udev/devices/hugepages
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116 onload_fs_t
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119 svirt_home_t
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121 /home/[^/]+/.libvirt/qemu(/.*)?
122 /home/[^/]+/.cache/libvirt/qemu(/.*)?
123 /home/[^/]+/.config/libvirt/qemu(/.*)?
124 /home/[^/]+/.local/share/libvirt/boot(/.*)?
125 /home/[^/]+/.local/share/libvirt/images(/.*)?
126 /home/[^/]+/.local/share/gnome-boxes/images(/.*)?
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130 semanage fcontext can also be used to manipulate default file context
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133 semanage permissive can also be used to manipulate whether or not a
134 process type is permissive.
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136 semanage module can also be used to enable/disable/install/remove pol‐
137 icy modules.
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139 semanage boolean can also be used to manipulate the booleans
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142 system-config-selinux is a GUI tool available to customize SELinux pol‐
143 icy settings.
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147 This manual page was auto-generated using sepolicy manpage .
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151 selinux(8), svirt_qemu_net(8), semanage(8), restorecon(8), chcon(1),
152 sepolicy(8), setsebool(8)
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156svirt_qemu_net 20-05-05 svirt_qemu_net_selinux(8)