[libvirt] [PATCH v4 7/9] qemu: Introduce qemuBuildChrDeviceStr

The function being introduced is responsible for creating command line argument for '-device' for given character device. Based on the chardev type, it calls appropriate qemuBuild.*ChrDeviceStr(), e.g. qemuBuildSerialChrDeviceStr() for serial chardev and so on. --- src/qemu/qemu_command.c | 202 +++++++++++++++++++++++++++++++++++++----------- src/qemu/qemu_command.h | 12 +-- 2 files changed, 163 insertions(+), 51 deletions(-) diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 6cf46a2..063d76b 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -6593,6 +6593,21 @@ cleanup: return ret; } +static int +qemuBuildChrDeviceCommandLine(virCommandPtr cmd, + virDomainDefPtr def, + virDomainChrDefPtr chr, + virQEMUCapsPtr qemuCaps) +{ + char *devstr = NULL; + + if (qemuBuildChrDeviceStr(&devstr, def, chr, qemuCaps) < 0) + return -1; + + virCommandAddArgList(cmd, "-device", devstr, NULL); + return 0; +} + qemuBuildCommandLineCallbacks buildCommandLineCallbacks = { .qemuGetSCSIDeviceSgName = virSCSIDeviceGetSgName, }; @@ -7670,13 +7685,8 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, devstr); VIR_FREE(devstr); - virCommandAddArg(cmd, "-device"); - if (!(devstr = qemuBuildChrDeviceStr(serial, qemuCaps, - def->os.arch, - def->os.machine))) + if (qemuBuildChrDeviceCommandLine(cmd, def, serial, qemuCaps) < 0) goto error; - virCommandAddArg(cmd, devstr); - VIR_FREE(devstr); } else { virCommandAddArg(cmd, "-serial"); if (!(devstr = qemuBuildChrArgStr(&serial->source, NULL))) @@ -7707,10 +7717,8 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, devstr); VIR_FREE(devstr); - virCommandAddArg(cmd, "-device"); - virCommandAddArgFormat(cmd, "isa-parallel,chardev=char%s,id=%s", - parallel->info.alias, - parallel->info.alias); + if (qemuBuildChrDeviceCommandLine(cmd, def, parallel, qemuCaps) < 0) + goto error; } else { virCommandAddArg(cmd, "-parallel"); if (!(devstr = qemuBuildChrArgStr(&parallel->source, NULL))) @@ -7724,8 +7732,6 @@ qemuBuildCommandLine(virConnectPtr conn, for (i = 0; i < def->nchannels; i++) { virDomainChrDefPtr channel = def->channels[i]; char *devstr; - char *addr; - int port; switch (channel->targetType) { case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_GUESTFWD: @@ -7744,17 +7750,10 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, devstr); VIR_FREE(devstr); - addr = virSocketAddrFormat(channel->target.addr); - if (!addr) + if (qemuBuildChrDeviceStr(&devstr, def, channel, qemuCaps) < 0) goto error; - port = virSocketAddrGetPort(channel->target.addr); - - virCommandAddArg(cmd, "-netdev"); - virCommandAddArgFormat(cmd, - "user,guestfwd=tcp:%s:%i,chardev=char%s,id=user-%s", - addr, port, channel->info.alias, - channel->info.alias); - VIR_FREE(addr); + virCommandAddArgList(cmd, "-netdev", devstr, NULL); + VIR_FREE(devstr); break; case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO: @@ -7780,12 +7779,8 @@ qemuBuildCommandLine(virConnectPtr conn, VIR_FREE(devstr); } - virCommandAddArg(cmd, "-device"); - if (!(devstr = qemuBuildVirtioSerialPortDevStr(channel, - qemuCaps))) + if (qemuBuildChrDeviceCommandLine(cmd, def, channel, qemuCaps) < 0) goto error; - virCommandAddArg(cmd, devstr); - VIR_FREE(devstr); break; } } @@ -7817,11 +7812,8 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, devstr); VIR_FREE(devstr); - virCommandAddArg(cmd, "-device"); - if (!(devstr = qemuBuildSclpDevStr(console))) + if (qemuBuildChrDeviceCommandLine(cmd, def, console, qemuCaps) < 0) goto error; - virCommandAddArg(cmd, devstr); - VIR_FREE(devstr); break; case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO: @@ -7839,12 +7831,8 @@ qemuBuildCommandLine(virConnectPtr conn, virCommandAddArg(cmd, devstr); VIR_FREE(devstr); - virCommandAddArg(cmd, "-device"); - if (!(devstr = qemuBuildVirtioSerialPortDevStr(console, - qemuCaps))) + if (qemuBuildChrDeviceCommandLine(cmd, def, console, qemuCaps) < 0) goto error; - virCommandAddArg(cmd, devstr); - VIR_FREE(devstr); break; case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL: @@ -8534,11 +8522,12 @@ error: /* This function generates the correct '-device' string for character * devices of each architecture. */ -char * -qemuBuildChrDeviceStr(virDomainChrDefPtr serial, - virQEMUCapsPtr qemuCaps, - virArch arch, - char *machine) +static int +qemuBuildSerialChrDeviceStr(char **deviceStr, + virDomainChrDefPtr serial, + virQEMUCapsPtr qemuCaps, + virArch arch, + char *machine) { virBuffer cmd = VIR_BUFFER_INITIALIZER; @@ -8570,7 +8559,7 @@ qemuBuildChrDeviceStr(virDomainChrDefPtr serial, } if (qemuBuildDeviceAddressStr(&cmd, &serial->info, qemuCaps) < 0) - goto error; + goto error; } } @@ -8579,13 +8568,136 @@ qemuBuildChrDeviceStr(virDomainChrDefPtr serial, goto error; } - return virBufferContentAndReset(&cmd); + *deviceStr = virBufferContentAndReset(&cmd); + return 0; - error: +error: virBufferFreeAndReset(&cmd); - return NULL; + return -1; +} + +static int +qemuBuildParallelChrDeviceStr(char **deviceStr, + virDomainChrDefPtr chr) +{ + if (virAsprintf(deviceStr, "isa-parallel,chardev=char%s,id=%s", + chr->info.alias, chr->info.alias) < 0) { + virReportOOMError(); + return -1; + } + return 0; } +static int +qemuBuildChannelChrDeviceStr(char **deviceStr, + virDomainChrDefPtr chr, + virQEMUCapsPtr qemuCaps) +{ + int ret = -1; + char *addr = NULL; + int port; + + switch ((enum virDomainChrChannelTargetType) chr->targetType) { + case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_GUESTFWD: + + addr = virSocketAddrFormat(chr->target.addr); + if (!addr) + return ret; + port = virSocketAddrGetPort(chr->target.addr); + + if (virAsprintf(deviceStr, + "user,guestfwd=tcp:%s:%i,chardev=char%s,id=user-%s", + addr, port, chr->info.alias, chr->info.alias) < 0) { + virReportOOMError(); + goto cleanup; + } + break; + + case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO: + if (!(*deviceStr = qemuBuildVirtioSerialPortDevStr(chr, qemuCaps))) + goto cleanup; + break; + + case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_NONE: + case VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_LAST: + return ret; + } + + ret = 0; +cleanup: + VIR_FREE(addr); + return ret; +} + +static int +qemuBuildConsoleChrDeviceStr(char **deviceStr, + virDomainChrDefPtr chr, + virQEMUCapsPtr qemuCaps) +{ + int ret = -1; + + switch ((enum virDomainChrConsoleTargetType) chr->targetType) { + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SCLP: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SCLPLM: + if (!(*deviceStr = qemuBuildSclpDevStr(chr))) + goto cleanup; + break; + + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_VIRTIO: + if (!(*deviceStr = qemuBuildVirtioSerialPortDevStr(chr, qemuCaps))) + goto cleanup; + break; + + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_NONE: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_XEN: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_UML: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_LXC: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_OPENVZ: + case VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_LAST: + break; + } + + ret = 0; +cleanup: + return ret; +} + +int +qemuBuildChrDeviceStr(char **deviceStr, + virDomainDefPtr vmdef, + virDomainChrDefPtr chr, + virQEMUCapsPtr qemuCaps) +{ + int ret = -1; + + switch ((enum virDomainChrDeviceType) chr->deviceType) { + case VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL: + ret = qemuBuildSerialChrDeviceStr(deviceStr, chr, qemuCaps, + vmdef->os.arch, + vmdef->os.machine); + break; + + case VIR_DOMAIN_CHR_DEVICE_TYPE_PARALLEL: + ret = qemuBuildParallelChrDeviceStr(deviceStr, chr); + break; + + case VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL: + ret = qemuBuildChannelChrDeviceStr(deviceStr, chr, qemuCaps); + break; + + case VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE: + ret = qemuBuildConsoleChrDeviceStr(deviceStr, chr, qemuCaps); + break; + + case VIR_DOMAIN_CHR_DEVICE_TYPE_LAST: + return ret; + } + + return ret; +} + + /* * This method takes a string representing a QEMU command line ARGV set * optionally prefixed by a list of environment variables. It then tries diff --git a/src/qemu/qemu_command.h b/src/qemu/qemu_command.h index e92c78a..88d7099 100644 --- a/src/qemu/qemu_command.h +++ b/src/qemu/qemu_command.h @@ -75,12 +75,12 @@ virCommandPtr qemuBuildCommandLine(virConnectPtr conn, qemuBuildCommandLineCallbacksPtr callbacks) ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(11); -/* Generate string for arch-specific '-device' parameter */ -char * -qemuBuildChrDeviceStr (virDomainChrDefPtr serial, - virQEMUCapsPtr qemuCaps, - virArch arch, - char *machine); +/* Generate '-device' string for chardev device */ +int +qemuBuildChrDeviceStr(char **deviceStr, + virDomainDefPtr vmdef, + virDomainChrDefPtr chr, + virQEMUCapsPtr qemuCaps); /* With vlan == -1, use netdev syntax, else old hostnet */ char * qemuBuildHostNetStr(virDomainNetDefPtr net, -- 1.8.1.5