From 1d446bd4650bd4fa71c0fdafb2b7fc811f1899bf Mon Sep 17 00:00:00 2001
From: Brian Turek <brian.turek@gmail.com>
Date: Thu, 8 Oct 2020 15:32:24 +0100
Subject: [PATCH] qemu: add 'fmode' and 'dmode' options
MIME-Version: 1.0
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Expose QEMU's 9pfs 'fmode' and 'dmode' options via attributes on the
'filesystem' node in the domain XML. These options control the creation
mode of files and directories, respectively, when using
accessmode=mapped.

Signed-off-by: Brian Turek <brian.turek@gmail.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
---
 docs/schemas/domaincommon.rng                 | 16 +++++
 src/conf/domain_conf.c                        | 29 +++++++++
 src/conf/domain_conf.h                        |  2 +
 .../qemuxml2argvdata/virtio-9p-createmode.xml | 58 ++++++++++++++++++
 .../virtio-9p-createmode.x86_64-latest.xml    | 61 +++++++++++++++++++
 tests/qemuxml2xmltest.c                       |  1 +
 6 files changed, 167 insertions(+)
 create mode 100644 tests/qemuxml2argvdata/virtio-9p-createmode.xml
 create mode 100644 tests/qemuxml2xmloutdata/virtio-9p-createmode.x86_64-latest.xml

diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index a62a598568..97fa873977 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -26,6 +26,12 @@
     </element>
   </define>
 
+  <define name="createMode">
+    <data type="unsignedInt">
+      <param name="pattern">0[0-7]{3}|[0-7]{1,3}</param>
+    </data>
+  </define>
+
   <!--
       We handle only document defining a domain
     -->
@@ -2746,6 +2752,16 @@
             </choice>
           </attribute>
         </optional>
+        <optional>
+          <attribute name="fmode">
+            <ref name="createMode"/>
+          </attribute>
+        </optional>
+        <optional>
+          <attribute name="dmode">
+            <ref name="createMode"/>
+          </attribute>
+        </optional>
         <optional>
           <element name="readonly">
             <empty/>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index b47f43afd9..7696b12ef9 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -11476,6 +11476,8 @@ virDomainFSDefParseXML(virDomainXMLOptionPtr xmlopt,
     g_autofree char *units = NULL;
     g_autofree char *model = NULL;
     g_autofree char *multidevs = NULL;
+    g_autofree char *fmode = NULL;
+    g_autofree char *dmode = NULL;
 
     ctxt->node = node;
 
@@ -11504,6 +11506,26 @@ virDomainFSDefParseXML(virDomainXMLOptionPtr xmlopt,
         def->accessmode = VIR_DOMAIN_FS_ACCESSMODE_PASSTHROUGH;
     }
 
+    fmode = virXMLPropString(node, "fmode");
+    if (fmode) {
+        if ((virStrToLong_uip(fmode, NULL, 8, &def->fmode) < 0) ||
+            (def->fmode > 0777)) {
+            virReportError(VIR_ERR_XML_ERROR,
+                           _("invalid fmode: '%s'"), fmode);
+            goto error;
+        }
+    }
+
+    dmode = virXMLPropString(node, "dmode");
+    if (dmode) {
+        if ((virStrToLong_uip(dmode, NULL, 8, &def->dmode) < 0) ||
+            (def->dmode > 0777)) {
+            virReportError(VIR_ERR_XML_ERROR,
+                           _("invalid dmode: '%s'"), dmode);
+            goto error;
+        }
+    }
+
     model = virXMLPropString(node, "model");
     if (model) {
         if ((def->model = virDomainFSModelTypeFromString(model)) < 0 ||
@@ -26181,6 +26203,13 @@ virDomainFSDefFormat(virBufferPtr buf,
     }
     if (def->multidevs)
         virBufferAsprintf(buf, " multidevs='%s'", multidevs);
+
+    if (def->fmode)
+        virBufferAsprintf(buf, " fmode='%04o'", def->fmode);
+
+    if (def->dmode)
+        virBufferAsprintf(buf, " dmode='%04o'", def->dmode);
+
     virBufferAddLit(buf, ">\n");
 
     virBufferAdjustIndent(buf, 2);
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 170fc73af9..8a487e9de3 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -849,6 +849,8 @@ struct _virDomainFSDef {
     int wrpolicy; /* enum virDomainFSWrpolicy */
     int format; /* virStorageFileFormat */
     int model; /* virDomainFSModel */
+    unsigned int fmode;
+    unsigned int dmode;
     int multidevs; /* virDomainFSMultidevs */
     unsigned long long usage; /* in bytes */
     virStorageSourcePtr src;
diff --git a/tests/qemuxml2argvdata/virtio-9p-createmode.xml b/tests/qemuxml2argvdata/virtio-9p-createmode.xml
new file mode 100644
index 0000000000..032b22a2da
--- /dev/null
+++ b/tests/qemuxml2argvdata/virtio-9p-createmode.xml
@@ -0,0 +1,58 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <controller type='usb' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='ide' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <filesystem type='mount' accessmode='mapped' fmode='644'>
+      <source dir='/export/fs0'/>
+      <target dir='fs0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped' dmode='755'>
+      <source dir='/export/fs1'/>
+      <target dir='fs1'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped' fmode='0640' dmode='0750'>
+      <source dir='/export/fs2'/>
+      <target dir='fs2'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped'>
+      <source dir='/export/fs3'/>
+      <target dir='fs3'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </filesystem>
+    <serial type='pty'>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/virtio-9p-createmode.x86_64-latest.xml b/tests/qemuxml2xmloutdata/virtio-9p-createmode.x86_64-latest.xml
new file mode 100644
index 0000000000..7c374ca3a6
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/virtio-9p-createmode.x86_64-latest.xml
@@ -0,0 +1,61 @@
+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219136</memory>
+  <currentMemory unit='KiB'>219136</currentMemory>
+  <vcpu placement='static'>1</vcpu>
+  <os>
+    <type arch='x86_64' machine='pc'>hvm</type>
+    <boot dev='hd'/>
+  </os>
+  <cpu mode='custom' match='exact' check='none'>
+    <model fallback='forbid'>qemu64</model>
+  </cpu>
+  <clock offset='utc'/>
+  <on_poweroff>destroy</on_poweroff>
+  <on_reboot>restart</on_reboot>
+  <on_crash>destroy</on_crash>
+  <devices>
+    <emulator>/usr/bin/qemu-system-x86_64</emulator>
+    <controller type='usb' index='0' model='piix3-uhci'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <controller type='ide' index='0'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+    </controller>
+    <controller type='pci' index='0' model='pci-root'/>
+    <filesystem type='mount' accessmode='mapped' fmode='0644'>
+      <source dir='/export/fs0'/>
+      <target dir='fs0'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped' dmode='0755'>
+      <source dir='/export/fs1'/>
+      <target dir='fs1'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped' fmode='0640' dmode='0750'>
+      <source dir='/export/fs2'/>
+      <target dir='fs2'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
+    </filesystem>
+    <filesystem type='mount' accessmode='mapped'>
+      <source dir='/export/fs3'/>
+      <target dir='fs3'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+    </filesystem>
+    <serial type='pty'>
+      <target type='isa-serial' port='0'>
+        <model name='isa-serial'/>
+      </target>
+    </serial>
+    <console type='pty'>
+      <target type='serial' port='0'/>
+    </console>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='virtio'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x0c' function='0x0'/>
+    </memballoon>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 44ac9fbce7..0e9f88788c 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -1513,6 +1513,7 @@ mymain(void)
     DO_TEST_CAPS_ARCH_LATEST("x86_64-default-cpu-tcg-q35-4.2", "x86_64");
 
     DO_TEST_CAPS_LATEST("virtio-9p-multidevs");
+    DO_TEST_CAPS_LATEST("virtio-9p-createmode");
     DO_TEST("downscript", NONE);
 
  cleanup: