[PATCH] vmx: make 'fileName' optional for CD-ROMs
Martin Kletzander
mkletzan at redhat.com
Tue Mar 17 18:12:18 UTC 2020
On Tue, Mar 17, 2020 at 05:25:38PM +0100, Pino Toscano wrote:
>It seems like CD-ROMs may have no 'fileName' property specified in case
>there is nothing configured as attachment for the drive. Hence, make
>sure that virVMXParseDisk() do not consider it mandatory anymore,
>considering it an empty block cdrom device. Sadly virVMXParseDisk() is
>used also to parse disk and floppies, so make sure that a NULL fileName
>is handled in cdrom-related paths.
>
>https://bugzilla.redhat.com/show_bug.cgi?id=1808610
>
>Signed-off-by: Pino Toscano <ptoscano at redhat.com>
>---
> src/vmx/vmx.c | 22 ++++++++++--------
> .../vmx2xmldata/vmx2xml-cdrom-ide-empty-2.vmx | 4 ++++
> .../vmx2xmldata/vmx2xml-cdrom-ide-empty-2.xml | 23 +++++++++++++++++++
> tests/vmx2xmltest.c | 1 +
> 4 files changed, 40 insertions(+), 10 deletions(-)
> create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.vmx
> create mode 100644 tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.xml
>
>diff --git a/src/vmx/vmx.c b/src/vmx/vmx.c
>index f0140129a2..58ae966fd4 100644
>--- a/src/vmx/vmx.c
>+++ b/src/vmx/vmx.c
>@@ -2207,7 +2207,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> goto cleanup;
>
> /* vmx:fileName -> def:src, def:type */
>- if (virVMXGetConfigString(conf, fileName_name, &fileName, false) < 0)
>+ if (virVMXGetConfigString(conf, fileName_name, &fileName, true) < 0)
> goto cleanup;
>
> /* vmx:writeThrough -> def:cachemode */
>@@ -2218,7 +2218,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
>
> /* Setup virDomainDiskDef */
> if (device == VIR_DOMAIN_DISK_DEVICE_DISK) {
>- if (virStringHasCaseSuffix(fileName, ".vmdk")) {
>+ if (fileName && virStringHasCaseSuffix(fileName, ".vmdk")) {
Disk without the path does not make sense, if you just error out here then you
don't need to modify each and every line here.
> char *tmp;
>
> if (deviceType != NULL) {
>@@ -2254,7 +2254,8 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> if (mode)
> (*def)->transient = STRCASEEQ(mode,
> "independent-nonpersistent");
>- } else if (virStringHasCaseSuffix(fileName, ".iso") ||
>+ } else if (fileName == NULL ||
>+ virStringHasCaseSuffix(fileName, ".iso") ||
> STREQ(fileName, "emptyBackingString") ||
> (deviceType &&
> (STRCASEEQ(deviceType, "atapi-cdrom") ||
>@@ -2277,7 +2278,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> goto cleanup;
> }
> } else if (device == VIR_DOMAIN_DISK_DEVICE_CDROM) {
>- if (virStringHasCaseSuffix(fileName, ".iso")) {
>+ if (fileName && virStringHasCaseSuffix(fileName, ".iso")) {
> char *tmp;
>
> if (deviceType && STRCASENEQ(deviceType, "cdrom-image")) {
>@@ -2295,7 +2296,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> goto cleanup;
> }
> VIR_FREE(tmp);
>- } else if (virStringHasCaseSuffix(fileName, ".vmdk")) {
>+ } else if (fileName && virStringHasCaseSuffix(fileName, ".vmdk")) {
> /*
> * This function was called in order to parse a CDROM device, but
> * .vmdk files are for harddisk devices only. Just ignore it,
>@@ -2306,7 +2307,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> } else if (deviceType && STRCASEEQ(deviceType, "atapi-cdrom")) {
> virDomainDiskSetType(*def, VIR_STORAGE_TYPE_BLOCK);
>
>- if (STRCASEEQ(fileName, "auto detect")) {
>+ if (fileName && STRCASEEQ(fileName, "auto detect")) {
> ignore_value(virDomainDiskSetSource(*def, NULL));
> (*def)->startupPolicy = VIR_DOMAIN_STARTUP_POLICY_OPTIONAL;
> } else if (virDomainDiskSetSource(*def, fileName) < 0) {
>@@ -2317,7 +2318,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> (*def)->device = VIR_DOMAIN_DISK_DEVICE_LUN;
> virDomainDiskSetType(*def, VIR_STORAGE_TYPE_BLOCK);
>
>- if (STRCASEEQ(fileName, "auto detect")) {
>+ if (fileName && STRCASEEQ(fileName, "auto detect")) {
> ignore_value(virDomainDiskSetSource(*def, NULL));
> (*def)->startupPolicy = VIR_DOMAIN_STARTUP_POLICY_OPTIONAL;
> } else if (virDomainDiskSetSource(*def, fileName) < 0) {
>@@ -2325,7 +2326,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> }
> } else if (busType == VIR_DOMAIN_DISK_BUS_SCSI &&
> deviceType && STRCASEEQ(deviceType, "scsi-passthru")) {
>- if (STRPREFIX(fileName, "/vmfs/devices/cdrom/")) {
>+ if (fileName && STRPREFIX(fileName, "/vmfs/devices/cdrom/")) {
> /* SCSI-passthru CD-ROMs actually are device='lun' */
> (*def)->device = VIR_DOMAIN_DISK_DEVICE_LUN;
> virDomainDiskSetType(*def, VIR_STORAGE_TYPE_BLOCK);
>@@ -2341,7 +2342,7 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> */
> goto ignore;
> }
>- } else if (STREQ(fileName, "emptyBackingString")) {
>+ } else if (fileName && STREQ(fileName, "emptyBackingString")) {
> if (deviceType && STRCASENEQ(deviceType, "cdrom-image")) {
> virReportError(VIR_ERR_INTERNAL_ERROR,
> _("Expecting VMX entry '%s' to be 'cdrom-image' "
>@@ -2355,7 +2356,8 @@ virVMXParseDisk(virVMXContext *ctx, virDomainXMLOptionPtr xmlopt, virConfPtr con
> virReportError(VIR_ERR_INTERNAL_ERROR,
> _("Invalid or not yet handled value '%s' "
> "for VMX entry '%s' for device type '%s'"),
>- fileName, fileName_name,
>+ fileName ? fileName : "(not present)",
>+ fileName_name,
> deviceType ? deviceType : "unknown");
> goto cleanup;
> }
>diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.vmx b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.vmx
>new file mode 100644
>index 0000000000..36286cb20f
>--- /dev/null
>+++ b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.vmx
>@@ -0,0 +1,4 @@
>+config.version = "8"
>+virtualHW.version = "4"
>+ide0:0.present = "true"
>+ide0:0.deviceType = "atapi-cdrom"
Is this happening even without the `startConnected = "FALSE"` ? I thought we
should just make the filename optional if:
1) startConnected = FALSE and
2) the device is a CD-ROM
but if this works for you, then I'm also fine with it I guess, no need to try to
keep the code clean, I also don't like polishing something ancient. Although
this code was written just over 10 years ago, so it's almost new...
(Honestly, kudos to Matthias since his his "First version" still works =D)
Maybe we could use startConnected similarly to what we have with startupPolicy.
But who knows.
>diff --git a/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.xml b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.xml
>new file mode 100644
>index 0000000000..af4a5ff9f6
>--- /dev/null
>+++ b/tests/vmx2xmldata/vmx2xml-cdrom-ide-empty-2.xml
>@@ -0,0 +1,23 @@
>+<domain type='vmware'>
>+ <uuid>00000000-0000-0000-0000-000000000000</uuid>
>+ <memory unit='KiB'>32768</memory>
>+ <currentMemory unit='KiB'>32768</currentMemory>
>+ <vcpu placement='static'>1</vcpu>
>+ <os>
>+ <type arch='i686'>hvm</type>
>+ </os>
>+ <clock offset='utc'/>
>+ <on_poweroff>destroy</on_poweroff>
>+ <on_reboot>restart</on_reboot>
>+ <on_crash>destroy</on_crash>
>+ <devices>
>+ <disk type='block' device='cdrom'>
>+ <target dev='hda' bus='ide'/>
>+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>+ </disk>
>+ <controller type='ide' index='0'/>
>+ <video>
>+ <model type='vmvga' vram='4096' primary='yes'/>
>+ </video>
>+ </devices>
>+</domain>
>diff --git a/tests/vmx2xmltest.c b/tests/vmx2xmltest.c
>index 8d7b8ba2a4..1966aed6fe 100644
>--- a/tests/vmx2xmltest.c
>+++ b/tests/vmx2xmltest.c
>@@ -218,6 +218,7 @@ mymain(void)
> DO_TEST("cdrom-scsi-passthru", "cdrom-scsi-passthru");
> DO_TEST("cdrom-ide-file", "cdrom-ide-file");
> DO_TEST("cdrom-ide-empty", "cdrom-ide-empty");
>+ DO_TEST("cdrom-ide-empty-2", "cdrom-ide-empty-2");
Can't you just do
DO_TEST("cdrom-ide-empty-2", "cdrom-ide-empty");
and save one file?
Anyway, if you want to change it the way I thought of it then fine, if not, then
fine too and:
Reviewed-by-I-guess: Martin Kletzander <mkletzan at redhat.com>
> DO_TEST("cdrom-ide-device", "cdrom-ide-device");
> DO_TEST("cdrom-ide-raw-device", "cdrom-ide-raw-device");
> DO_TEST("cdrom-ide-raw-auto-detect", "cdrom-ide-raw-auto-detect");
>--
>2.25.1
>
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