Re: [libvirt] [PREPOST 07/17] src/xenxs:Refactor disk config parsing code

From: Kiarie Kahurani <davidkiarie4(a)gmail.com&gt; Introduce the function xenParseXMDisk(..........); Parses disk config signed-off-by: David Kiarie&lt;davidkiarie4(a)gmail.com&gt; --- src/xenxs/xen_xm.c | 204 ++++++++++++++++++++++++++++------------------------- 1 file changed, 108 insertions(+), 96 deletions(-) diff --git a/src/xenxs/xen_xm.c b/src/xenxs/xen_xm.c index ebeeeb5..80a7941 100644 --- a/src/xenxs/xen_xm.c +++ b/src/xenxs/xen_xm.c @@ -685,87 +685,14 @@ static int xenParseXMCPUFeatures(virConfPtr conf, virDomainDefPtr def) return 0; } -virDomainDefPtr -xenParseXM(virConfPtr conf, int xendConfigVersion, - virCapsPtr caps) +static int xenParseXMDisk(virConfPtr conf, virDomainDefPtr def, + int xendConfigVersion) { - const char *str; - int hvm = 0; - int val; - virConfValuePtr list; - virDomainDefPtr def = NULL; + const char *str = NULL; virDomainDiskDefPtr disk = NULL; - virDomainNetDefPtr net = NULL; - virDomainGraphicsDefPtr graphics = NULL; - size_t i; - char *script = NULL; - char *listenAddr = NULL; - - if (VIR_ALLOC(def) < 0) - return NULL; - - def->virtType = VIR_DOMAIN_VIRT_XEN; - def->id = -1; - if (xenParseXMGeneral(conf, def, caps) < 0) - goto cleanup; - hvm = (STREQ(def->os.type, "hvm")); - if (hvm) { - const char *boot; - if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0) - goto cleanup; - - if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0) - goto cleanup; + int hvm = STREQ(def->os.type, "hvm"); + virConfValuePtr list = virConfGetValue(conf, "disk"); - for (i = 0; i < VIR_DOMAIN_BOOT_LAST && boot[i]; i++) { - switch (*boot) { - case 'a': - def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY; - break; - case 'd': - def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM; - break; - case 'n': - def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET; - break; - case 'c': - default: - def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK; - break; - } - def->os.nBootDevs++; - } - } else { - const char *extra, *root; - - if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0) - goto cleanup; - if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0) - goto cleanup; - - if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0) - goto cleanup; - if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0) - goto cleanup; - if (xenXMConfigGetString(conf, "extra", &extra, NULL) < 0) - goto cleanup; - if (xenXMConfigGetString(conf, "root", &root, NULL) < 0) - goto cleanup; - - if (root) { - if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0) - goto cleanup; - } else { - if (VIR_STRDUP(def->os.cmdline, extra) < 0) - goto cleanup; - } - } - if (xenParseXMMem(conf, def) < 0) - goto cleanup; - if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0) - goto cleanup; - - list = virConfGetValue(conf, "disk"); if (list && list->type == VIR_CONF_LIST) { list = list->list; while (list) { @@ -779,7 +706,7 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, head = list->str; if (!(disk = virDomainDiskDefNew())) - goto cleanup; + return -1; /* * Disks have 3 components, SOURCE,DEST-DEVICE,MODE @@ -798,10 +725,10 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, ignore_value(virDomainDiskSetSource(disk, NULL)); } else { if (VIR_STRNDUP(tmp, head, offset - head) < 0) - goto cleanup; + return -1; if (virDomainDiskSetSource(disk, tmp) < 0) { VIR_FREE(tmp); - goto cleanup; + return -1; } VIR_FREE(tmp); } @@ -815,12 +742,12 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, if (!(offset = strchr(head, ','))) goto skipdisk; if (VIR_ALLOC_N(disk->dst, (offset - head) + 1) < 0) - goto cleanup; + return -1; if (virStrncpy(disk->dst, head, offset - head, (offset - head) + 1) == NULL) { virReportError(VIR_ERR_INTERNAL_ERROR, _("Dest file %s too big for destination"), head); - goto cleanup; + return -1; } head = offset + 1; @@ -832,16 +759,16 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, if ((tmp = strchr(src, ':')) != NULL) { len = tmp - src; if (VIR_STRNDUP(tmp, src, len) < 0) - goto cleanup; + return -1; if (virDomainDiskSetDriver(disk, tmp) < 0) { VIR_FREE(tmp); - goto cleanup; + return -1; } VIR_FREE(tmp); /* Strip the prefix we found off the source file name */ if (virDomainDiskSetSource(disk, src + len + 1) < 0) - goto cleanup; + return -1; src = virDomainDiskGetSource(disk); } @@ -854,7 +781,7 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, len = tmp - src; if (VIR_STRNDUP(driverType, src, len) < 0) - goto cleanup; + return -1; if (STREQ(driverType, "aio")) virDomainDiskSetFormat(disk, VIR_STORAGE_FILE_RAW); else @@ -865,12 +792,12 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, virReportError(VIR_ERR_INTERNAL_ERROR, _("Unknown driver type %s"), src); - goto cleanup; + return -1; } /* Strip the prefix we found off the source file name */ if (virDomainDiskSetSource(disk, src + len + 1) < 0) - goto cleanup; + return -1; src = virDomainDiskGetSource(disk); } } @@ -878,7 +805,7 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, /* No source, or driver name, so fix to phy: */ if (!virDomainDiskGetDriver(disk) && virDomainDiskSetDriver(disk, "phy") < 0) - goto cleanup; + return -1;

/* phy: type indicates a block device */ @@ -912,7 +839,7 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, /* Maintain list in sorted order according to target device name */ if (VIR_APPEND_ELEMENT(def->disks, def->ndisks, disk) < 0) - goto cleanup; + return -1; skipdisk: list = list->next;

@@ -922,26 +849,108 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, if (hvm && xendConfigVersion == XEND_CONFIG_VERSION_3_0_2) { if (xenXMConfigGetString(conf, "cdrom", &str, NULL) < 0) - goto cleanup; + return -1; if (str) { if (!(disk = virDomainDiskDefNew())) - goto cleanup; + return -1; virDomainDiskSetType(disk, VIR_STORAGE_TYPE_FILE); disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM; if (virDomainDiskSetDriver(disk, "file") < 0) - goto cleanup; + return -1; if (virDomainDiskSetSource(disk, str) < 0) - goto cleanup; + return -1; if (VIR_STRDUP(disk->dst, "hdc") < 0) - goto cleanup; + return -1; disk->bus = VIR_DOMAIN_DISK_BUS_IDE; disk->src->readonly = true; if (VIR_APPEND_ELEMENT(def->disks, def->ndisks, disk) < 0) + return -1; + } + } + + return 0; +} +virDomainDefPtr +xenParseXM(virConfPtr conf, int xendConfigVersion, + virCapsPtr caps) +{ + const char *str; + int hvm = 0; + int val; + virConfValuePtr list; + virDomainDefPtr def = NULL; + virDomainDiskDefPtr disk = NULL;

+ virDomainNetDefPtr net = NULL; + virDomainGraphicsDefPtr graphics = NULL; + size_t i; + char *script = NULL; + char *listenAddr = NULL; + + if (VIR_ALLOC(def) < 0) + return NULL; + + def->virtType = VIR_DOMAIN_VIRT_XEN; + def->id = -1; + if (xenParseXMGeneral(conf, def, caps) < 0) + goto cleanup; + hvm = (STREQ(def->os.type, "hvm")); + if (hvm) { + const char *boot; + if (xenXMConfigCopyString(conf, "kernel", &def->os.loader) < 0) + goto cleanup; + + if (xenXMConfigGetString(conf, "boot", &boot, "c") < 0) + goto cleanup; + + for (i = 0; i < VIR_DOMAIN_BOOT_LAST && boot[i]; i++) { + switch (*boot) { + case 'a': + def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY; + break; + case 'd': + def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM; + break; + case 'n': + def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET; + break; + case 'c': + default: + def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK; + break; + } + def->os.nBootDevs++; + } + } else { + const char *extra, *root; + + if (xenXMConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0) + goto cleanup; + if (xenXMConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0) + goto cleanup; + + if (xenXMConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0) + goto cleanup; + if (xenXMConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0) + goto cleanup; + if (xenXMConfigGetString(conf, "extra", &extra, NULL) < 0) + goto cleanup; + if (xenXMConfigGetString(conf, "root", &root, NULL) < 0) + goto cleanup; + + if (root) { + if (virAsprintf(&def->os.cmdline, "root=%s %s", root, extra) < 0) + goto cleanup; + } else { + if (VIR_STRDUP(def->os.cmdline, extra) < 0) goto cleanup; } } + if (xenParseXMMem(conf, def) < 0) + goto cleanup; + if (xenXMConfigCopyStringOpt(conf, "device_model", &def->emulator) < 0) + goto cleanup; if (xenParseXMVif(conf, def) < 0) goto cleanup; @@ -953,6 +962,9 @@ xenParseXM(virConfPtr conf, int xendConfigVersion, goto cleanup; if (xenParseXMCPUFeatures(conf, def) < 0) goto cleanup; + if (xenParseXMDisk(conf, def, xendConfigVersion) < 0) + goto cleanup; + if (hvm) { if (xenXMConfigGetString(conf, "usbdevice", &str, NULL) < 0) goto cleanup;