[Libvirt-cim] [PATCH V3 2/3] VSMS: tip error for invalid disk resource

From: Xu Wang <cngesaint(a)outlook.com&gt; Original code will report xml text missing when a disk is not accessible, making user confuse. This patch will report the real error to tip user check its system health state on the server. Signed-off-by: Xu Wang <cngesaint(a)outlook.com&gt; --- src/Virt_VirtualSystemManagementService.c | 75 +++++++++++++++++++++------- 1 files changed, 56 insertions(+), 19 deletions(-) diff --git a/src/Virt_VirtualSystemManagementService.c b/src/Virt_VirtualSystemManagementService.c index 1369c6a..d3a580f 100644 --- a/src/Virt_VirtualSystemManagementService.c +++ b/src/Virt_VirtualSystemManagementService.c @@ -964,11 +964,13 @@ static const char *net_rasd_to_vdev(CMPIInstance *inst, } static const char *disk_rasd_to_vdev(CMPIInstance *inst, - struct virt_device *dev) + struct virt_device *dev, + char **p_error) { const char *val = NULL; uint16_t type; bool read = false; + int rc; CU_DEBUG("Enter disk_rasd_to_vdev"); if (cu_get_str_prop(inst, "VirtualDevice", &val) != CMPI_RC_OK) @@ -982,8 +984,25 @@ static const char *disk_rasd_to_vdev(CMPIInstance *inst, free(dev->dev.disk.source); dev->dev.disk.source = strdup(val); + if (dev->dev.disk.source == NULL) { + return "dev->dev.disk.source is null!"; + } + dev->dev.disk.disk_type = disk_type_from_file(val); + if ((!XSTREQ(dev->dev.disk.source, "/dev/null")) && + (dev->dev.disk.disk_type == DISK_UNKNOWN)) { + /* on success or fail caller should try free it */ + rc = asprintf(p_error, "Device %s, Address %s, " + "make sure Address can be accessed on host system.", + dev->dev.disk.virtual_dev, dev->dev.disk.source); + if (rc == -1) { + CU_DEBUG("error during recording exception!"); + p_error = NULL; + } + return "Can't get a valid disk type"; + } + if (cu_get_u16_prop(inst, "EmulatedType", &type) != CMPI_RC_OK) type = VIRT_DISK_TYPE_DISK; @@ -1452,10 +1471,11 @@ static const char *input_rasd_to_vdev(CMPIInstance *inst, static const char *_sysvirt_rasd_to_vdev(CMPIInstance *inst, struct virt_device *dev, uint16_t type, - const char *ns) + const char *ns, + char **p_error) { if (type == CIM_RES_TYPE_DISK) { - return disk_rasd_to_vdev(inst, dev); + return disk_rasd_to_vdev(inst, dev, p_error); } else if (type == CIM_RES_TYPE_NET) { return net_rasd_to_vdev(inst, dev, ns); } else if (type == CIM_RES_TYPE_MEM) { @@ -1494,7 +1514,8 @@ static const char *_container_rasd_to_vdev(CMPIInstance *inst, static const char *rasd_to_vdev(CMPIInstance *inst, struct domain *domain, struct virt_device *dev, - const char *ns) + const char *ns, + char **p_error) { uint16_t type; CMPIObjectPath *op; @@ -1516,7 +1537,7 @@ static const char *rasd_to_vdev(CMPIInstance *inst, if (domain->type == DOMAIN_LXC) msg = _container_rasd_to_vdev(inst, dev, type, ns); else - msg = _sysvirt_rasd_to_vdev(inst, dev, type, ns); + msg = _sysvirt_rasd_to_vdev(inst, dev, type, ns, p_error); out: if (msg && op) CU_DEBUG("rasd_to_vdev(%s): %s", CLASSNAME(op), msg); @@ -1560,7 +1581,8 @@ static char *add_device_nodup(struct virt_device *dev, static const char *classify_resources(CMPIArray *resources, const char *ns, - struct domain *domain) + struct domain *domain, + char **p_error) { int i; uint16_t type; @@ -1613,13 +1635,15 @@ static const char *classify_resources(CMPIArray *resources, msg = rasd_to_vdev(inst, domain, &domain->dev_vcpu[0], - ns); + ns, + p_error); } else if (type == CIM_RES_TYPE_MEM) { domain->dev_mem_ct = 1; msg = rasd_to_vdev(inst, domain, &domain->dev_mem[0], - ns); + ns, + p_error); } else if (type == CIM_RES_TYPE_DISK) { struct virt_device dev; int dcount = count + domain->dev_disk_ct; @@ -1628,7 +1652,8 @@ static const char *classify_resources(CMPIArray *resources, msg = rasd_to_vdev(inst, domain, &dev, - ns); + ns, + p_error); if (msg == NULL) msg = add_device_nodup(&dev, domain->dev_disk, @@ -1646,7 +1671,8 @@ static const char *classify_resources(CMPIArray *resources, msg = rasd_to_vdev(inst, domain, &dev, - ns); + ns, + p_error); if (msg == NULL) msg = add_device_nodup(&dev, domain->dev_net, @@ -1676,7 +1702,8 @@ static const char *classify_resources(CMPIArray *resources, msg = rasd_to_vdev(inst, domain, &dev, - ns); + ns, + p_error); if (msg == NULL) msg = add_device_nodup(&dev, domain->dev_graphics, @@ -1687,7 +1714,8 @@ static const char *classify_resources(CMPIArray *resources, msg = rasd_to_vdev(inst, domain, &domain->dev_input[0], - ns); + ns, + p_error); } if (msg != NULL) return msg; @@ -2083,6 +2111,7 @@ static CMPIInstance *create_system(const CMPIContext *context, struct inst_list list; const char *props[] = {NULL}; struct domain *domain = NULL; + char *error_msg = NULL; inst_list_init(&list); @@ -2113,12 +2142,13 @@ static CMPIInstance *create_system(const CMPIContext *context, if (s->rc != CMPI_RC_OK) goto out; - msg = classify_resources(resources, NAMESPACE(ref), domain); + msg = classify_resources(resources, NAMESPACE(ref), domain, &error_msg); if (msg != NULL) { - CU_DEBUG("Failed to classify resources: %s", msg); + CU_DEBUG("Failed to classify resources: %s, %s", + msg, error_msg); cu_statusf(_BROKER, s, CMPI_RC_ERR_FAILED, - "ResourceSettings Error: %s", msg); + "ResourceSettings Error: %s, %s", msg, error_msg); goto out; } @@ -2159,6 +2189,7 @@ static CMPIInstance *create_system(const CMPIContext *context, out: + free(error_msg); cleanup_dominfo(&domain); free(xml); inst_list_free(&list); @@ -2638,6 +2669,7 @@ static CMPIStatus resource_add(struct domain *dominfo, struct virt_device *dev; int *count = NULL; const char *msg = NULL; + char *error_msg = NULL; op = CMGetObjectPath(rasd, &s); if ((op == NULL) || (s.rc != CMPI_RC_OK)) @@ -2677,12 +2709,12 @@ static CMPIStatus resource_add(struct domain *dominfo, dev = &list[*count]; dev->type = type; - msg = rasd_to_vdev(rasd, dominfo, dev, ns); + msg = rasd_to_vdev(rasd, dominfo, dev, ns, &error_msg); if (msg != NULL) { cu_statusf(_BROKER, &s, CMPI_RC_ERR_FAILED, - "Add resource failed: %s", - msg); + "Add resource failed: %s, %s", + msg, error_msg); goto out; } @@ -2702,6 +2734,8 @@ static CMPIStatus resource_add(struct domain *dominfo, (*count)++; out: + free(error_msg); + return s; } @@ -2718,6 +2752,7 @@ static CMPIStatus resource_mod(struct domain *dominfo, int *count; int i; const char *msg = NULL; + char *error_msg = NULL; CU_DEBUG("Enter resource_mod"); if (devid == NULL) { @@ -2749,7 +2784,7 @@ static CMPIStatus resource_mod(struct domain *dominfo, struct virt_device *dev = &list[i]; if (STREQ(dev->id, devid)) { - msg = rasd_to_vdev(rasd, dominfo, dev, ns); + msg = rasd_to_vdev(rasd, dominfo, dev, ns, &error_msg); if (msg != NULL) { cu_statusf(_BROKER, &s, CMPI_RC_ERR_FAILED, @@ -2793,6 +2828,8 @@ static CMPIStatus resource_mod(struct domain *dominfo, } out: + free(error_msg); + return s; } -- 1.7.1