smartcard: check for qemu capability

Qemu smartcard/spicevmc support exists on branches (such as
http://cgit.freedesktop.org/~alon/qemu/commit/?h=usb_ccid.v15&id=024a37b)
but is not yet upstream.  The added -help output matches a scratch build
that will be close to the RHEL 6.1 qemu-kvm.

* src/qemu/qemu_capabilities.h (QEMUD_CMD_FLAG_CCID_EMULATED)
(QEMUD_CMD_FLAG_CCID_PASSTHRU, QEMUD_CMD_FLAG_CHARDEV_SPICEVMC):
New flags.
* src/qemu/qemu_capabilities.c (qemuCapsComputeCmdFlags)
(qemuCapsParseDeviceStr): Check for smartcard capabilities.
(qemuCapsExtractVersionInfo): Tweak comment.
* tests/qemuhelptest.c (mymain): New test.
* tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel61: New file.
* tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel61-device: Likewise.

src/qemu/qemu_capabilities.c

@@ -832,8 +832,11 @@ qemuCapsComputeCmdFlags(const char *help,
         flags |= QEMUD_CMD_FLAG_PCIDEVICE;
     if (strstr(help, "-mem-path"))
         flags |= QEMUD_CMD_FLAG_MEM_PATH;
-    if (strstr(help, "-chardev"))
+    if (strstr(help, "-chardev")) {
         flags |= QEMUD_CMD_FLAG_CHARDEV;
+        if (strstr(help, "-chardev spicevmc"))
+            flags |= QEMUD_CMD_FLAG_CHARDEV_SPICEVMC;
+    }
     if (strstr(help, "-balloon"))
         flags |= QEMUD_CMD_FLAG_BALLOON;
     if (strstr(help, "-device")) {
@@ -1052,10 +1055,10 @@ qemuCapsExtractDeviceStr(const char *qemu,
      * the output format makes it possible to distinguish what we
      * need.  With qemu 0.13.0 and later, unrecognized '-device
      * bogus,?' cause an error in isolation, but are silently ignored
-     * in combination with '-device ?'.  Qemu 0.12.x doesn't
+     * in combination with '-device ?'.  Upstream qemu 0.12.x doesn't
      * understand '-device name,?', and always exits with status 1 for
      * the simpler '-device ?', so this function is really only useful
-     * for parsing out features added in 0.13.0 or later.  */
+     * if -help includes "device driver,?".  */
     cmd = virCommandNewArgList(qemu,
                                "-device", "?",
                                "-device", "pci-assign,?",
@@ -1084,6 +1087,10 @@ qemuCapsParseDeviceStr(const char *str, unsigned long long *flags)
     /* Which devices exist. */
     if (strstr(str, "name \"hda-duplex\""))
         *flags |= QEMUD_CMD_FLAG_HDA_DUPLEX;
+    if (strstr(str, "name \"ccid-card-emulated\""))
+        *flags |= QEMUD_CMD_FLAG_CCID_EMULATED;
+    if (strstr(str, "name \"ccid-card-passthru\""))
+        *flags |= QEMUD_CMD_FLAG_CCID_PASSTHRU;
 
     /* Features of given devices. */
     if (strstr(str, "pci-assign.configfd"))
@@ -1133,8 +1140,8 @@ int qemuCapsExtractVersionInfo(const char *qemu,
                              &version, &is_kvm, &kvm_version) == -1)
         goto cleanup;
 
-    /* Only call qemuCapsExtractDeviceStr for qemu 0.13.0+, since it
-     * won't set any additional flags for qemu 0.12.x.  */
+    /* qemuCapsExtractDeviceStr will only set additional flags if qemu
+     * understands the 0.13.0+ notion of "-device driver,".  */
     if ((flags & QEMUD_CMD_FLAG_DEVICE) &&
         strstr(help, "-device driver,?") &&
         qemuCapsExtractDeviceStr(qemu, &flags) < 0)

src/qemu/qemu_capabilities.h

@@ -88,6 +88,9 @@ enum qemuCapsFlags {
     QEMUD_CMD_FLAG_DRIVE_AIO     = (1LL << 51), /* -drive aio= supported */
     QEMUD_CMD_FLAG_PCI_MULTIBUS  = (1LL << 52), /* bus=pci.0 vs bus=pci */
     QEMUD_CMD_FLAG_PCI_BOOTINDEX = (1LL << 53), /* pci-assign.bootindex */
+    QEMUD_CMD_FLAG_CCID_EMULATED = (1LL << 54), /* -device ccid-card-emulated */
+    QEMUD_CMD_FLAG_CCID_PASSTHRU = (1LL << 55), /* -device ccid-card-passthru */
+    QEMUD_CMD_FLAG_CHARDEV_SPICEVMC = (1LL << 56), /* -chardev spicevmc */
 };
 
 virCapsPtr qemuCapsInit(virCapsPtr old_caps);

tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel61

+QEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2), Copyright (c) 2003-2008 Fabrice Bellard
+
+WARNING: Direct use of qemu-kvm from the command line is unsupported.
+WARNING: Only use via libvirt.
+WARNING: Some options listed here may not be available in future releases.
+
+usage: qemu [options] [disk_image]
+
+'disk_image' is a raw hard image image for IDE hard disk 0
+
+Standard options:
+-h or -help     display this help and exit
+-version        display version information and exit
+-M machine      select emulated machine (-M ? for list)
+-cpu cpu        select CPU (-cpu ? for list)
+-smp n[,maxcpus=cpus][,cores=cores][,threads=threads][,sockets=sockets]
+                set the number of CPUs to 'n' [default=1]
+                maxcpus= maximum number of total cpus, including
+                  offline CPUs for hotplug etc.
+                cores= number of CPU cores on one socket
+                threads= number of threads on one CPU core
+                sockets= number of discrete sockets in the system
+-numa node[,mem=size][,cpus=cpu[-cpu]][,nodeid=node]
+-fda/-fdb file  use 'file' as floppy disk 0/1 image
+-hda/-hdb file  use 'file' as IDE hard disk 0/1 image
+-hdc/-hdd file  use 'file' as IDE hard disk 2/3 image
+-cdrom file     use 'file' as IDE cdrom image (cdrom is ide1 master)
+-drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i]
+       [,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off]
+       [,cache=writethrough|writeback|none|unsafe][,format=f]
+       [,serial=s][,addr=A][,id=name][,aio=threads|native]
+       [,readonly=on|off]
+                use 'file' as a drive image
+-set group.id.arg=value
+                set <arg> parameter for item <id> of type <group>
+                i.e. -set drive.$id.file=/path/to/image
+-global driver.property=value
+                set a global default for a driver property
+-mtdblock file  use 'file' as on-board Flash memory image
+-sd file        use 'file' as SecureDigital card image
+-pflash file    use 'file' as a parallel flash image
+-boot [order=drives][,once=drives][,menu=on|off]
+                'drives': floppy (a), hard disk (c), CD-ROM (d), network (n)
+-snapshot       write to temporary files instead of disk image files
+-m megs         set virtual RAM size to megs MB [default=128]
+-k language     use keyboard layout (for example 'fr' for French)
+-audio-help     print list of audio drivers and their options
+-soundhw c1,... enable audio support
+                and only specified sound cards (comma separated list)
+                use -soundhw ? to get the list of supported cards
+                use -soundhw all to enable all of them
+-usb            enable the USB driver (will be the default soon)
+-usbdevice name add the host or guest USB device 'name'
+-device driver[,prop[=value][,...]]
+                add device (based on driver)
+                prop=value,... sets driver properties
+                use -device ? to print all possible drivers
+                use -device driver,? to print all possible properties
+-name string1[,process=string2]    set the name of the guest
+            string1 sets the window title and string2 the process name (on Linux)
+-uuid %08x-%04x-%04x-%04x-%012x
+                specify machine UUID
+
+Display options:
+-nographic      disable graphical output and redirect serial I/Os to console
+-spice <args>   enable spice
+-portrait       rotate graphical output 90 deg left (only PXA LCD)
+-vga [std|cirrus|vmware|qxl|xenfb|none]
+                select video card type
+-full-screen    start in full screen
+-vnc display    start a VNC server on display
+
+i386 target only:
+-win2k-hack     use it when installing Windows 2000 to avoid a disk full bug
+-no-fd-bootchk  disable boot signature checking for floppy disks
+-no-acpi        disable ACPI
+-balloon none   disable balloon device
+-balloon virtio[,addr=str]
+                enable virtio balloon device (default)
+-acpitable [sig=str][,rev=n][,oem_id=str][,oem_table_id=str][,oem_rev=n][,asl_compiler_id=str][,asl_compiler_rev=n][,data=file1[:file2]...]
+                ACPI table description
+-smbios file=binary
+                Load SMBIOS entry from binary file
+-smbios type=0[,vendor=str][,version=str][,date=str][,release=%d.%d]
+                Specify SMBIOS type 0 fields
+-smbios type=1[,manufacturer=str][,product=str][,version=str][,serial=str]
+              [,uuid=uuid][,sku=str][,family=str]
+                Specify SMBIOS type 1 fields
+
+Network options:
+-net nic[,vlan=n][,macaddr=mac][,model=type][,name=str][,addr=str][,vectors=v]
+                create a new Network Interface Card and connect it to VLAN 'n'
+-net user[,vlan=n][,name=str][,net=addr[/mask]][,host=addr][,restrict=y|n]
+         [,hostname=host][,dhcpstart=addr][,dns=addr][,tftp=dir][,bootfile=f]
+         [,hostfwd=rule][,guestfwd=rule][,smb=dir[,smbserver=addr]]
+                connect the user mode network stack to VLAN 'n', configure its
+                DHCP server and enabled optional services
+-net tap[,vlan=n][,name=str][,fd=h][,ifname=name][,script=file][,downscript=dfile][,sndbuf=nbytes][,vnet_hdr=on|off][,vhost=on|off][,vhostfd=h]
+                connect the host TAP network interface to VLAN 'n' and use the
+                network scripts 'file' (default=/etc/qemu-ifup)
+                and 'dfile' (default=/etc/qemu-ifdown);
+                use '[down]script=no' to disable script execution;
+                use 'fd=h' to connect to an already opened TAP interface
+                use 'sndbuf=nbytes' to limit the size of the send buffer; the
+                default of 'sndbuf=1048576' can be disabled using 'sndbuf=0'
+                use vnet_hdr=off to avoid enabling the IFF_VNET_HDR tap flag; use
+                vnet_hdr=on to make the lack of IFF_VNET_HDR support an error condition
+                use vhost=on to enable experimental in kernel accelerator
+                use 'vhostfd=h' to connect to an already opened vhost net device
+-net socket[,vlan=n][,name=str][,fd=h][,listen=[host]:port][,connect=host:port]
+                connect the vlan 'n' to another VLAN using a socket connection
+-net socket[,vlan=n][,name=str][,fd=h][,mcast=maddr:port]
+                connect the vlan 'n' to multicast maddr and port
+-net dump[,vlan=n][,file=f][,len=n]
+                dump traffic on vlan 'n' to file 'f' (max n bytes per packet)
+-net none       use it alone to have zero network devices; if no -net option
+                is provided, the default is '-net nic -net user'
+-netdev [user|tap|socket],id=str[,option][,option][,...]
+
+Character device options:
+-chardev null,id=id
+-chardev socket,id=id[,host=host],port=host[,to=to][,ipv4][,ipv6][,nodelay]
+         [,server][,nowait][,telnet] (tcp)
+-chardev socket,id=id,path=path[,server][,nowait][,telnet] (unix)
+-chardev udp,id=id[,host=host],port=port[,localaddr=localaddr]
+         [,localport=localport][,ipv4][,ipv6]
+-chardev msmouse,id=id
+-chardev vc,id=id[[,width=width][,height=height]][[,cols=cols][,rows=rows]]
+-chardev file,id=id,path=path
+-chardev pipe,id=id,path=path
+-chardev pty,id=id
+-chardev stdio,id=id
+-chardev tty,id=id,path=path
+-chardev parport,id=id,path=path
+-chardev spicevmc,id=id,debug=debug,name=name
+
+Bluetooth(R) options:
+-bt hci,null    dumb bluetooth HCI - doesn't respond to commands
+-bt hci,host[:id]
+                use host's HCI with the given name
+-bt hci[,vlan=n]
+                emulate a standard HCI in virtual scatternet 'n'
+-bt vhci[,vlan=n]
+                add host computer to virtual scatternet 'n' using VHCI
+-bt device:dev[,vlan=n]
+                emulate a bluetooth device 'dev' in scatternet 'n'
+
+Linux/Multiboot boot specific:
+-kernel bzImage use 'bzImage' as kernel image
+-append cmdline use 'cmdline' as kernel command line
+-initrd file    use 'file' as initial ram disk
+
+Debug/Expert options:
+-serial dev     redirect the serial port to char device 'dev'
+-parallel dev   redirect the parallel port to char device 'dev'
+-monitor dev    redirect the monitor to char device 'dev'
+-qmp dev        like -monitor but opens in 'control' mode.
+-mon chardev=[name][,mode=readline|control][,default]
+-pidfile file   write PID to 'file'
+-singlestep   always run in singlestep mode
+-S              freeze CPU at startup (use 'c' to start execution)
+-gdb dev        wait for gdb connection on 'dev'
+-s              shorthand for -gdb tcp::1234
+-d item1,...    output log to /tmp/qemu.log (use -d ? for a list of log items)
+-hdachs c,h,s[,t]
+                force hard disk 0 physical geometry and the optional BIOS
+                translation (t=none or lba) (usually qemu can guess them)
+-L path         set the directory for the BIOS, VGA BIOS and keymaps
+-bios file      set the filename for the BIOS
+-enable-kvm     enable KVM full virtualization support
+-no-reboot      exit instead of rebooting
+-no-shutdown    stop before shutdown
+-loadvm [tag|id]
+                start right away with a saved state (loadvm in monitor)
+-daemonize      daemonize QEMU after initializing
+-option-rom rom load a file, rom, into the option ROM space
+-clock          force the use of the given methods for timer alarm.
+                To see what timers are available use -clock ?
+-rtc [base=utc|localtime|date][,clock=host|vm][,driftfix=none|slew]
+                set the RTC base and clock, enable drift fix for clock ticks
+-icount [N|auto]
+                enable virtual instruction counter with 2^N clock ticks per
+                instruction
+-watchdog i6300esb|ib700
+                enable virtual hardware watchdog [default=none]
+-watchdog-action reset|shutdown|poweroff|pause|debug|none
+                action when watchdog fires [default=reset]
+-echr chr       set terminal escape character instead of ctrl-a
+-virtioconsole c
+                set virtio console
+-show-cursor    show cursor
+-tb-size n      set TB size
+-incoming p     prepare for incoming migration, listen on port p
+-nodefaults     don't create default devices.
+-chroot dir     Chroot to dir just before starting the VM.
+-runas user     Change to user id user just before starting the VM.
+-nodefconfig
+                do not load default config files at startup
+-readconfig <file>
+-writeconfig <file>
+                read/write config file
+-no-kvm         disable KVM hardware virtualization
+-no-kvm-irqchip disable KVM kernel mode PIC/IOAPIC/LAPIC
+-no-kvm-pit     disable KVM kernel mode PIT
+-no-kvm-pit-reinjection disable KVM kernel mode PIT interrupt reinjection
+-pcidevice host=bus:dev.func[,dma=none][,name=string]
+                expose a PCI device to the guest OS.
+                dma=none: don't perform any dma translations (default is to use an iommu)
+                'string' is used in log output.
+-enable-nesting enable support for running a VM inside the VM (AMD only)
+-nvram FILE          provide ia64 nvram contents
+-tdf                 enable guest time drift compensation
+-kvm-shadow-memory MEGABYTES
+                     allocate MEGABYTES for kvm mmu shadowing
+-mem-path FILE       provide backing storage for guest RAM
+-mem-prealloc        preallocate guest memory (use with -mempath)
+-redhat-disable-KSM  disable KSM on guest physical memory
+
+During emulation, the following keys are useful:
+ctrl-alt-f      toggle full screen
+ctrl-alt-n      switch to virtual console 'n'
+ctrl-alt        toggle mouse and keyboard grab
+
+When using -nographic, press 'ctrl-a h' to get some help.
+
+WARNING: Direct use of qemu-kvm from the command line is unsupported.
+WARNING: Only use via libvirt.
+WARNING: Some options listed here may not be available in future releases.
+

tests/qemuhelpdata/qemu-kvm-0.12.1.2-rhel61-device

+open /dev/kvm: No such file or directory
+Could not initialize KVM, will disable KVM support
+name "pci-bridge", bus PCI
+name "virtio-balloon-pci", bus PCI
+name "virtio-serial-pci", bus PCI, alias "virtio-serial"
+name "virtio-net-pci", bus PCI
+name "virtio-blk-pci", bus PCI
+name "i82562", bus PCI
+name "i82559er", bus PCI
+name "i82559c", bus PCI
+name "i82559b", bus PCI
+name "i82559a", bus PCI
+name "i82558b", bus PCI
+name "i82558a", bus PCI
+name "i82557c", bus PCI
+name "i82557b", bus PCI
+name "i82557a", bus PCI
+name "i82551", bus PCI
+name "i82550", bus PCI
+name "pcnet", bus PCI
+name "rtl8139", bus PCI
+name "e1000", bus PCI, desc "Intel Gigabit Ethernet"
+name "ide-drive", bus IDE
+name "isa-ide", bus ISA
+name "ES1370", bus PCI, desc "ENSONIQ AudioPCI ES1370"
+name "AC97", bus PCI, desc "Intel 82801AA AC97 Audio"
+name "intel-hda", bus PCI, desc "Intel HD Audio Controller"
+name "hda-duplex", bus HDA, desc "HDA Audio Codec, duplex"
+name "hda-output", bus HDA, desc "HDA Audio Codec, output-only"
+name "VGA", bus PCI
+name "SUNW,fdtwo", bus System
+name "sysbus-fdc", bus System
+name "isa-serial", bus ISA
+name "cirrus-vga", bus PCI, desc "Cirrus CLGD 54xx VGA"
+name "isa-parallel", bus ISA
+name "piix4-usb-uhci", bus PCI
+name "piix3-usb-uhci", bus PCI
+name "vmware-svga", bus PCI
+name "ib700", bus ISA
+name "ne2k_isa", bus ISA
+name "testdev", bus ISA
+name "pci-assign", bus PCI, desc "pass through host pci devices to the guest"
+name "qxl", bus PCI, desc "Spice QXL GPU (secondary)"
+name "qxl-vga", bus PCI, desc "Spice QXL GPU (primary, vga compatible)"
+name "smbus-eeprom", bus I2C
+name "usb-hub", bus USB
+name "usb-host", bus USB
+name "usb-kbd", bus USB
+name "usb-mouse", bus USB
+name "usb-tablet", bus USB
+name "usb-wacom-tablet", bus USB, desc "QEMU PenPartner Tablet"
+name "usb-braille", bus USB
+name "usb-serial", bus USB
+name "usb-net", bus USB
+name "usb-bt-dongle", bus USB
+name "usb-ccid", bus USB, desc "CCID Rev 1.1 smartcard reader"
+name "ccid-card-passthru", bus ccid-bus, desc "passthrough smartcard"
+name "virtserialport", bus virtio-serial-bus
+name "virtconsole", bus virtio-serial-bus
+name "i6300esb", bus PCI
+name "ne2k_pci", bus PCI
+pci-assign.host=pci-hostaddr
+pci-assign.iommu=uint32
+pci-assign.configfd=string
+virtio-blk-pci.class=hex32
+virtio-blk-pci.drive=drive
+virtio-blk-pci.logical_block_size=uint16
+virtio-blk-pci.physical_block_size=uint16
+virtio-blk-pci.min_io_size=uint16
+virtio-blk-pci.opt_io_size=uint32
+virtio-blk-pci.ioeventfd=on/off
+virtio-blk-pci.vectors=uint32
+virtio-blk-pci.indirect_desc=on/off
+virtio-blk-pci.scsi=on/off

tests/qemuhelptest.c

@@ -437,6 +437,49 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
             QEMUD_CMD_FLAG_DRIVE_AIO,
             13000, 1,  0);
+    DO_TEST("qemu-kvm-0.12.1.2-rhel61",
+            QEMUD_CMD_FLAG_VNC_COLON |
+            QEMUD_CMD_FLAG_NO_REBOOT |
+            QEMUD_CMD_FLAG_DRIVE |
+            QEMUD_CMD_FLAG_NAME |
+            QEMUD_CMD_FLAG_UUID |
+            QEMUD_CMD_FLAG_VNET_HDR |
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_TCP |
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_EXEC |
+            QEMUD_CMD_FLAG_DRIVE_CACHE_V2 |
+            QEMUD_CMD_FLAG_KVM |
+            QEMUD_CMD_FLAG_DRIVE_FORMAT |
+            QEMUD_CMD_FLAG_DRIVE_SERIAL |
+            QEMUD_CMD_FLAG_DRIVE_READONLY |
+            QEMUD_CMD_FLAG_VGA |
+            QEMUD_CMD_FLAG_0_10 |
+            QEMUD_CMD_FLAG_PCIDEVICE |
+            QEMUD_CMD_FLAG_MEM_PATH |
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_UNIX |
+            QEMUD_CMD_FLAG_CHARDEV |
+            QEMUD_CMD_FLAG_ENABLE_KVM |
+            QEMUD_CMD_FLAG_BALLOON |
+            QEMUD_CMD_FLAG_DEVICE |
+            QEMUD_CMD_FLAG_SMP_TOPOLOGY |
+            QEMUD_CMD_FLAG_RTC |
+            QEMUD_CMD_FLAG_VNET_HOST |
+            QEMUD_CMD_FLAG_NO_KVM_PIT |
+            QEMUD_CMD_FLAG_TDF |
+            QEMUD_CMD_FLAG_PCI_CONFIGFD |
+            QEMUD_CMD_FLAG_NODEFCONFIG |
+            QEMUD_CMD_FLAG_BOOT_MENU |
+            QEMUD_CMD_FLAG_NESTING |
+            QEMUD_CMD_FLAG_NAME_PROCESS |
+            QEMUD_CMD_FLAG_SMBIOS_TYPE |
+            QEMUD_CMD_FLAG_VGA_QXL |
+            QEMUD_CMD_FLAG_SPICE |
+            QEMUD_CMD_FLAG_VGA_NONE |
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
+            QEMUD_CMD_FLAG_HDA_DUPLEX |
+            QEMUD_CMD_FLAG_DRIVE_AIO |
+            QEMUD_CMD_FLAG_CCID_PASSTHRU |
+            QEMUD_CMD_FLAG_CHARDEV_SPICEVMC,
+            12001, 1,  0);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
 }