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commit: 92348a31d3dba24301e1d48d8d87027c9aca64e3 |
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Author: David Sugar <dsugar <AT> tresys <DOT> com> |
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AuthorDate: Tue Sep 5 14:17:50 2017 +0000 |
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Commit: Jason Zaman <perfinion <AT> gentoo <DOT> org> |
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CommitDate: Fri Sep 8 22:39:36 2017 +0000 |
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URL: https://gitweb.gentoo.org/proj/hardened-refpolicy.git/commit/?id=92348a31 |
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Separate read and write interface for tun_tap_device_t |
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|
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The following patch creates two additional interfaces for tun_tap_device_t to grant only read or only write access (rather than both read and write access). It is possible to open a tap device for only reading or only writing and this allows policy to match that use. |
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|
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Signed-off-by: Dave Sugar <dsugar <AT> tresys.com> |
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|
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policy/modules/kernel/corenetwork.if.in | 38 +++++++++++++++++++++++++++++++++ |
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1 file changed, 38 insertions(+) |
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|
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diff --git a/policy/modules/kernel/corenetwork.if.in b/policy/modules/kernel/corenetwork.if.in |
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index 46e10d08..3671fa8e 100644 |
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--- a/policy/modules/kernel/corenetwork.if.in |
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+++ b/policy/modules/kernel/corenetwork.if.in |
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@@ -2047,6 +2047,44 @@ interface(`corenet_dontaudit_tcp_connect_all_rpc_ports',` |
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######################################## |
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## <summary> |
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+## Read the TUN/TAP virtual network device. |
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+## </summary> |
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+## <param name="domain"> |
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+## <summary> |
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+## The domain read allowed access. |
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+## </summary> |
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+## </param> |
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+# |
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+interface(`corenet_read_tun_tap_dev',` |
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+ gen_require(` |
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+ type tun_tap_device_t; |
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+ ') |
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+ |
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+ dev_list_all_dev_nodes($1) |
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+ allow $1 tun_tap_device_t:chr_file read_chr_file_perms; |
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+') |
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+ |
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+######################################## |
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+## <summary> |
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+## Write the TUN/TAP virtual network device. |
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+## </summary> |
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+## <param name="domain"> |
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+## <summary> |
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+## The domain allowed write access. |
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+## </summary> |
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+## </param> |
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+# |
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+interface(`corenet_write_tun_tap_dev',` |
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+ gen_require(` |
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+ type tun_tap_device_t; |
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+ ') |
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+ |
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+ dev_list_all_dev_nodes($1) |
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+ allow $1 tun_tap_device_t:chr_file write_chr_file_perms; |
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+') |
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+ |
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+######################################## |
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+## <summary> |
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## Read and write the TUN/TAP virtual network device. |
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## </summary> |
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## <param name="domain"> |
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