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Do not generate security_model when fs driver is anything but 'path'

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QEMU does not support security_model for anything but 'path' fs driver type.
Currently in libvirt, when security_model ( accessmode attribute) is not
specified it auto-generates it irrespective of the fs driver type, which
can result in a qemu error for drivers other than path. This patch ensures
that the qemu cmdline is correctly generated by taking into account the
fs driver type.

Signed-off-by: Deepak C Shetty <deepakcs@linux.vnet.ibm.com>
This commit is contained in:
Deepak C Shetty 2012-01-10 18:23:31 +05:30 committed by Eric Blake
parent 52d064f42d
commit 99fbb3866c
4 changed files with 30 additions and 10 deletions
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1
AUTHORS
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@ -214,6 +214,7 @@ Patches have also been contributed by:
Michael Ellerman <michael@ellerman.id.au>
Rommer <rommer@active.by>
Yuri Chornoivan <yurchor@ukr.net>
Deepak C Shetty <deepakcs@linux.vnet.ibm.com>
[....send patches to get your name here....]

25
src/qemu/qemu_command.c
View File

@ -1,7 +1,7 @@
/*
* qemu_command.c: QEMU command generation
*
* Copyright (C) 2006-2011 Red Hat, Inc.
* Copyright (C) 2006-2012 Red Hat, Inc.
* Copyright (C) 2006 Daniel P. Berrange
*
* This library is free software; you can redistribute it and/or
@ -2132,12 +2132,23 @@ char *qemuBuildFSStr(virDomainFSDefPtr fs,
}
virBufferAdd(&opt, driver, -1);
if (fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_MAPPED) {
virBufferAddLit(&opt, ",security_model=mapped");
} else if(fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_PASSTHROUGH) {
virBufferAddLit(&opt, ",security_model=passthrough");
} else if(fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_SQUASH) {
virBufferAddLit(&opt, ",security_model=none");
if (fs->fsdriver == VIR_DOMAIN_FS_DRIVER_TYPE_PATH ||
fs->fsdriver == VIR_DOMAIN_FS_DRIVER_TYPE_DEFAULT) {
if (fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_MAPPED) {
virBufferAddLit(&opt, ",security_model=mapped");
} else if(fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_PASSTHROUGH) {
virBufferAddLit(&opt, ",security_model=passthrough");
} else if(fs->accessmode == VIR_DOMAIN_FS_ACCESSMODE_SQUASH) {
virBufferAddLit(&opt, ",security_model=none");
}
} else {
/* For other fs drivers, default(passthru) should always
* be supported */
if (fs->accessmode != VIR_DOMAIN_FS_ACCESSMODE_PASSTHROUGH) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("only supports passthrough accessmode"));
goto error;
}
}
virBufferAsprintf(&opt, ",id=%s%s", QEMU_FSDEV_HOST_PREFIX, fs->info.alias);
virBufferAsprintf(&opt, ",path=%s", fs->src);

7
tests/qemuxml2argvdata/qemuxml2argv-fs9p.args
View File

@ -4,7 +4,10 @@ unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -hda \
/dev/HostVG/QEMUGuest1 -fsdev local,security_model=passthrough,id=fsdev-fs0,\
path=/export/to/guest -device virtio-9p-pci,id=fs0,fsdev=fsdev-fs0,\
mount_tag=/import/from/host,bus=pci.0,addr=0x3 \
-fsdev handle,security_model=mapped,id=fsdev-fs1,\
-fsdev local,security_model=mapped,id=fsdev-fs1,\
path=/export/to/guest2 -device virtio-9p-pci,id=fs1,fsdev=fsdev-fs1,\
mount_tag=/import/from/host2,bus=pci.0,addr=0x4 \
-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
-fsdev handle,id=fsdev-fs2,\
path=/export/to/guest3 -device virtio-9p-pci,id=fs2,fsdev=fsdev-fs2,\
mount_tag=/import/from/host3,bus=pci.0,addr=0x5 \
-usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6

7
tests/qemuxml2argvdata/qemuxml2argv-fs9p.xml
View File

@ -25,9 +25,14 @@
<target dir='/import/from/host'/>
</filesystem>
<filesystem accessmode='mapped'>
<driver type='handle'/>
<driver type='path'/>
<source dir='/export/to/guest2'/>
<target dir='/import/from/host2'/>
</filesystem>
<filesystem>
<driver type='handle'/>
<source dir='/export/to/guest3'/>
<target dir='/import/from/host3'/>
</filesystem>
</devices>
</domain>