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From f019023539b64742e8f1ebc38ea26a204fa0a45c Mon Sep 17 00:00:00 2001
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Message-Id: <f019023539b64742e8f1ebc38ea26a204fa0a45c@dist-git>
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From: =?UTF-8?q?J=C3=A1n=20Tomko?= <jtomko@redhat.com>
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Date: Tue, 2 Oct 2018 14:00:41 +0200
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Subject: [PATCH] security: dac: also label listen UNIX sockets
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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We switched to opening mode='bind' sockets ourselves:
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commit 30fb2276d88b275dc2aad6ddd28c100d944b59a5
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qemu: support passing pre-opened UNIX socket listen FD
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in v4.5.0-rc1~251
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Then fixed qemuBuildChrChardevStr to change libvirtd's label
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while creating the socket:
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commit b0c6300fc42bbc3e5eb0b236392f7344581c5810
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qemu: ensure FDs passed to QEMU for chardevs have correct SELinux labels
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v4.5.0-rc1~52
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Also add labeling of these sockets to the DAC driver.
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Instead of duplicating the logic which decides whether libvirt should
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pre-create the socket, assume an existing path meaning that it was created
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by libvirt.
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https://bugzilla.redhat.com/show_bug.cgi?id=1633389
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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Reviewed-by: Erik Skultety <eskultet@redhat.com>
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(cherry picked from commit d6b8838dd83697f721fe0706068df765148154de)
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Signed-off-by: Ján Tomko <jtomko@redhat.com>
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RHEL 8.0: https://bugzilla.redhat.com/show_bug.cgi?id=1634775
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RHEL 7.6: https://bugzilla.redhat.com/show_bug.cgi?id=1635228
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Conflicts: src/security/security_dac.c
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commit 3ac7793ad1ae0f4dc7b7ddbcfd182d5ff0b45538
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security_dac: Pass virSecurityManagerPtr to virSecurityDACSetOwnership
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is not backported
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Reviewed-by: Jiri Denemark <jdenemar@redhat.com>
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---
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src/security/security_dac.c | 7 ++++++-
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1 file changed, 6 insertions(+), 1 deletion(-)
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diff --git a/src/security/security_dac.c b/src/security/security_dac.c
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index 4b623dcf39..74c70dd092 100644
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--- a/src/security/security_dac.c
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+++ b/src/security/security_dac.c
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@@ -1248,7 +1248,12 @@ virSecurityDACSetChardevLabel(virSecurityManagerPtr mgr,
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break;
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case VIR_DOMAIN_CHR_TYPE_UNIX:
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- if (!dev_source->data.nix.listen) {
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+ if (!dev_source->data.nix.listen ||
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+ (dev_source->data.nix.path &&
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+ virFileExists(dev_source->data.nix.path))) {
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+ /* Also label mode='bind' sockets if they exist,
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+ * e.g. because they were created by libvirt
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+ * and passed via FD */
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if (virSecurityDACSetOwnership(priv, NULL,
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dev_source->data.nix.path,
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user, group) < 0)
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--
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2.19.0
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