C++ ARRAY_CARDINALITY函数代码示例

static int testQemuAddArmGuest(virCapsPtr caps)
{
    static const char *machines[] = { "vexpress-a9",
                                      "vexpress-a15",
                                      "versatilepb" };
    virCapsGuestMachinePtr *capsmachines = NULL;
    virCapsGuestPtr guest;

    capsmachines = virCapabilitiesAllocMachines(machines,
                                                ARRAY_CARDINALITY(machines));
    if (!capsmachines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, "hvm", VIR_ARCH_ARMV7L,
                                    "/usr/bin/qemu-system-arm", NULL,
                                    ARRAY_CARDINALITY(machines),
                                    capsmachines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, "qemu", NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    virCapabilitiesFreeMachines(capsmachines, ARRAY_CARDINALITY(machines));
    return -1;
}

static int testQemuAddS390Guest(virCapsPtr caps)
{
    static const char *s390_machines[] = { "s390-virtio",
                                           "s390-ccw-virtio" };
    virCapsGuestMachinePtr *machines = NULL;
    virCapsGuestPtr guest;

    machines = virCapabilitiesAllocMachines(s390_machines,
                                            ARRAY_CARDINALITY(s390_machines));
    if (!machines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_S390X,
                                    "/usr/bin/qemu-system-s390x", NULL,
                                    ARRAY_CARDINALITY(s390_machines),
                                    machines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU, NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    virCapabilitiesFreeMachines(machines, ARRAY_CARDINALITY(s390_machines));
    return -1;
}

static int
testAddCPUModels(virQEMUCapsPtr caps, bool skipLegacy)
{
    const char *newModels[] = {
        "Opteron_G3", "Opteron_G2", "Opteron_G1",
        "Nehalem", "Penryn", "Conroe",
    };
    const char *legacyModels[] = {
        "n270", "athlon", "pentium3", "pentium2", "pentium",
        "486", "coreduo", "kvm32", "qemu32", "kvm64",
        "core2duo", "phenom", "qemu64",
    };
    size_t i;

    for (i = 0; i < ARRAY_CARDINALITY(newModels); i++) {
        if (virQEMUCapsAddCPUDefinition(caps, newModels[i]) < 0)
            return -1;
    }
    if (skipLegacy)
        return 0;
    for (i = 0; i < ARRAY_CARDINALITY(legacyModels); i++) {
        if (virQEMUCapsAddCPUDefinition(caps, legacyModels[i]) < 0)
            return -1;
    }
    return 0;
}

static int testQemuAddAARCH64Guest(virCapsPtr caps)
{
    static const char *machines[] = { "virt"};
    virCapsGuestMachinePtr *capsmachines = NULL;
    virCapsGuestPtr guest;

    capsmachines = virCapabilitiesAllocMachines(machines,
                                                ARRAY_CARDINALITY(machines));
    if (!capsmachines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_AARCH64,
                                    "/usr/bin/qemu-system-aarch64", NULL,
                                    ARRAY_CARDINALITY(machines),
                                    capsmachines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU, NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    virCapabilitiesFreeMachines(capsmachines, ARRAY_CARDINALITY(machines));
    return -1;
}

static int testQemuAddArmGuest(virCapsPtr caps)
{
    static const char *machines[] = { "vexpress-a9",
                                      "vexpress-a15",
                                      "versatilepb" };
    virCapsGuestMachinePtr *capsmachines = NULL;
    virCapsGuestPtr guest;

    capsmachines = virCapabilitiesAllocMachines(machines,
                                                ARRAY_CARDINALITY(machines));
    if (!capsmachines)
        goto error;

    guest = virCapabilitiesAddGuest(caps, VIR_DOMAIN_OSTYPE_HVM, VIR_ARCH_ARMV7L,
                                    QEMUBinList[TEST_UTILS_QEMU_BIN_ARM],
                                    NULL,
                                    ARRAY_CARDINALITY(machines),
                                    capsmachines);
    if (!guest)
        goto error;

    if (!virCapabilitiesAddGuestDomain(guest, VIR_DOMAIN_VIRT_QEMU, NULL, NULL, 0, NULL))
        goto error;

    return 0;

 error:
    virCapabilitiesFreeMachines(capsmachines, ARRAY_CARDINALITY(machines));
    return -1;
}

int qemuTestCapsCacheInsert(virQEMUCapsCachePtr cache,
                            virQEMUCapsPtr caps)
{
    size_t i;
    virQEMUCapsPtr tmpCaps;

    if (caps) {
        tmpCaps = caps;
    } else {
        if (!(tmpCaps = virQEMUCapsNew()))
            return -ENOMEM;
    }

    for (i = 0; i < ARRAY_CARDINALITY(QEMUBinList); i++) {
        virObjectRef(tmpCaps);
        if (virHashUpdateEntry(cache->binaries,
                               QEMUBinList[i],
                               tmpCaps) < 0) {
            virObjectUnref(tmpCaps);
            return -1;
        }
    }

    if (!caps)
        virObjectUnref(tmpCaps);

    return 0;
}

static int
gather_capability(LibHalContext *ctx, const char *udi,
                  const char *cap_name,
                  virNodeDevCapsDefPtr *caps_p)
{
    caps_tbl_entry *entry;

    entry = bsearch(&cap_name, caps_tbl, ARRAY_CARDINALITY(caps_tbl),
                    sizeof(caps_tbl[0]), cmpstringp);

    if (entry) {
        virNodeDevCapsDefPtr caps;
        if (VIR_ALLOC(caps) < 0)
            return ENOMEM;
        caps->type = entry->type;
        if (entry->gather_fn) {
            int rv = (*entry->gather_fn)(ctx, udi, &caps->data);
            if (rv != 0) {
                virNodeDevCapsDefFree(caps);
                return rv;
            }
        }
        caps->next = *caps_p;
        *caps_p = caps;
    }

    return 0;
}

static virCapsGuestMachinePtr *testQemuAllocMachines(int *nmachines)
{
    virCapsGuestMachinePtr *machines;
    static const char *const x86_machines[] = {
        "pc", "isapc"
    };

    machines = virCapabilitiesAllocMachines(x86_machines,
                                            ARRAY_CARDINALITY(x86_machines));
    if (machines == NULL)
        return NULL;

    *nmachines = ARRAY_CARDINALITY(x86_machines);

    return machines;
}

static int64_t
read_bd_stat(int device, int domid, const char *str)
{
    static const char *paths[] = {
        "/sys/bus/xen-backend/devices/vbd-%d-%d/statistics/%s",
        "/sys/bus/xen-backend/devices/tap-%d-%d/statistics/%s",
        "/sys/devices/xen-backend/vbd-%d-%d/statistics/%s",
        "/sys/devices/xen-backend/tap-%d-%d/statistics/%s"
    };

    int i;
    char *path;
    int64_t r;

    for (i = 0; i < ARRAY_CARDINALITY(paths); ++i) {
        if (virAsprintf(&path, paths[i], domid, device, str) < 0) {
            virReportOOMError();
            return -1;
        }

        r = read_stat(path);

        VIR_FREE(path);

        if (r >= 0) {
            return r;
        }
    }

    return -1;
}

static int
mymain(void)
{
    int ret = 0;
    int i;
    const char *nodeData[] = {
        "test1",
# if !(defined(__powerpc__) ||                  \
       defined(__powerpc64__))
        "test2",
        "test3",
        "test4",
        "test5",
        "test6",
# endif
    };

    if (virInitialize() < 0)
        return EXIT_FAILURE;

    for (i = 0 ; i < ARRAY_CARDINALITY(nodeData); i++)
      if (virtTestRun(nodeData[i], 1, linuxTestNodeInfo, nodeData[i]) != 0)
        ret = -1;

    return ret==0 ? EXIT_SUCCESS : EXIT_FAILURE;
}

static int lxcContainerPopulateDevices(void)
{
    int i;
    const struct {
        int maj;
        int min;
        mode_t mode;
        const char *path;
    } devs[] = {
        { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_NULL, 0666, "/dev/null" },
        { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_ZERO, 0666, "/dev/zero" },
        { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_FULL, 0666, "/dev/full" },
        { LXC_DEV_MAJ_TTY, LXC_DEV_MIN_CONSOLE, 0600, "/dev/console" },
        { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM, 0666, "/dev/random" },
        { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM, 0666, "/dev/urandom" },
    };

    /* Populate /dev/ with a few important bits */
    for (i = 0 ; i < ARRAY_CARDINALITY(devs) ; i++) {
        dev_t dev = makedev(devs[i].maj, devs[i].min);
        if (mknod(devs[i].path, S_IFCHR, dev) < 0 ||
            chmod(devs[i].path, devs[i].mode)) {
            virReportSystemError(errno,
                                 _("Failed to make device %s"),
                                 devs[i].path);
            return -1;
        }
    }

    if (access("/dev/pts/ptmx", W_OK) == 0) {
        if (symlink("/dev/pts/ptmx", "/dev/ptmx") < 0) {
            virReportSystemError(errno, "%s",
                                 _("Failed to create symlink /dev/ptmx to /dev/pts/ptmx"));
            return -1;
        }
    } else {
        dev_t dev = makedev(LXC_DEV_MAJ_TTY, LXC_DEV_MIN_PTMX);
        if (mknod("/dev/ptmx", S_IFCHR, dev) < 0 ||
            chmod("/dev/ptmx", 0666)) {
            virReportSystemError(errno, "%s",
                                 _("Failed to make device /dev/ptmx"));
            return -1;
        }
    }

    /* XXX we should allow multiple consoles per container
     * for tty2, tty3, etc, but the domain XML does not
     * handle this yet
     */
    if (symlink("/dev/pts/0", "/dev/tty1") < 0) {
        virReportSystemError(errno, "%s",
                             _("Failed to symlink /dev/pts/0 to /dev/tty1"));
        return -1;
    }

    return 0;
}

static int lxcContainerMountBasicFS(virDomainFSDefPtr root)
{
    const struct {
        const char *src;
        const char *dst;
        const char *type;
    } mnts[] = {
        { "/dev", "/dev", "tmpfs" },
        { "/proc", "/proc", "proc" },
        { "/sys", "/sys", "sysfs" },
#if WITH_SELINUX
        { "none", "/selinux", "selinuxfs" },
#endif
    };
    int i, rc = -1;
    char *devpts;

    if (virAsprintf(&devpts, "/.oldroot%s/dev/pts", root->src) < 0) {
        virReportOOMError();
        return rc;
    }

    for (i = 0 ; i < ARRAY_CARDINALITY(mnts) ; i++) {
        if (virFileMakePath(mnts[i].dst) != 0) {
            virReportSystemError(errno,
                                 _("Failed to mkdir %s"),
                                 mnts[i].src);
            goto cleanup;
        }
        if (mount(mnts[i].src, mnts[i].dst, mnts[i].type, 0, NULL) < 0) {
            virReportSystemError(errno,
                                 _("Failed to mount %s on %s"),
                                 mnts[i].type, mnts[i].type);
            goto cleanup;
        }
    }

    if ((rc = virFileMakePath("/dev/pts") != 0)) {
        virReportSystemError(rc, "%s",
                             _("Cannot create /dev/pts"));
        goto cleanup;
    }

    VIR_DEBUG("Trying to move %s to %s", devpts, "/dev/pts");
    if ((rc = mount(devpts, "/dev/pts", NULL, MS_MOVE, NULL)) < 0) {
        virReportSystemError(errno, "%s",
                             _("Failed to mount /dev/pts in container"));
        goto cleanup;
    }

    rc = 0;

 cleanup:
    VIR_FREE(devpts);

    return rc;
}

static virHashTablePtr
testHashInit(int size)
{
    virHashTablePtr hash;
    ssize_t i;

    if (!(hash = virHashCreate(size, NULL)))
        return NULL;

    /* entires are added in reverse order so that they will be linked in
     * collision list in the same order as in the uuids array
     */
    for (i = ARRAY_CARDINALITY(uuids) - 1; i >= 0; i--) {
        ssize_t oldsize = virHashTableSize(hash);
        if (virHashAddEntry(hash, uuids[i], (void *) uuids[i]) < 0) {
            virHashFree(hash);
            return NULL;
        }

        if (virHashTableSize(hash) != oldsize && virTestGetDebug()) {
            VIR_WARN("hash grown from %zd to %zd",
                     (size_t)oldsize, (size_t)virHashTableSize(hash));
        }
    }

    for (i = 0; i < ARRAY_CARDINALITY(uuids); i++) {
        if (!virHashLookup(hash, uuids[i])) {
            if (virTestGetVerbose()) {
                VIR_WARN("\nentry \"%s\" could not be found\n",
                         uuids[i]);
            }
            virHashFree(hash);
            return NULL;
        }
    }

    if (size && size != virHashTableSize(hash) && virTestGetDebug())
        fprintf(stderr, "\n");

    return hash;
}

/**
 * Tries to locate and load VBoxXPCOMC.so/dylib/dll, resolving all the related
 * function pointers.
 *
 * @returns 0 on success, -1 on failure.
 */
int
VBoxCGlueInit(unsigned int *version)
{
    int i;
    static const char *knownDirs[] = {
        "/usr/lib/virtualbox",
        "/usr/lib/virtualbox-ose",
        "/usr/lib64/virtualbox",
        "/usr/lib64/virtualbox-ose",
        "/usr/lib/VirtualBox",
        "/opt/virtualbox",
        "/opt/VirtualBox",
        "/opt/virtualbox/i386",
        "/opt/VirtualBox/i386",
        "/opt/virtualbox/amd64",
        "/opt/VirtualBox/amd64",
        "/usr/local/lib/virtualbox",
        "/usr/local/lib/VirtualBox",
        "/Applications/VirtualBox.app/Contents/MacOS"
    };
    const char *home = getenv("VBOX_APP_HOME");

    /* If the user specifies the location, try only that. */
    if (home != NULL) {
        if (tryLoadOne(home, false, false, version) < 0) {
            return -1;
        }
    }

    /* Try the additionally configured location. */
    if (VBOX_XPCOMC_DIR[0] != '\0') {
        if (tryLoadOne(VBOX_XPCOMC_DIR, true, true, version) >= 0) {
            return 0;
        }
    }

    /* Try the known locations. */
    for (i = 0; i < ARRAY_CARDINALITY(knownDirs); ++i) {
        if (tryLoadOne(knownDirs[i], true, true, version) >= 0) {
            return 0;
        }
    }

    /* Finally try the dynamic linker search path. */
    if (tryLoadOne(NULL, false, true, version) >= 0) {
        return 0;
    }

    /* No luck, return failure. */
    return -1;
}

static void testRemoveCommonRules(char *rules)
{
    size_t i;
    char *offset = rules;

    for (i = 0; i < ARRAY_CARDINALITY(commonRules); i++) {
        char *tmp = strstr(offset, commonRules[i]);
        size_t len = strlen(commonRules[i]);
        if (tmp) {
            memmove(tmp, tmp + len, (strlen(tmp) + 1) - len);
            offset = tmp;
        }
    }
}