Hardware: Added system slot provider

New providers:
 * LMI_SystemSlotProvider
 * LMI_SystemSlotContainerProvider

5 files changed, 832 insertions, 0 deletions

diff --git a/src/hardware/LMI_Hardware.h b/src/hardware/LMI_Hardware.h
index bb070f3..81881f5 100644
--- a/src/hardware/LMI_Hardware.h
+++ b/src/hardware/LMI_Hardware.h
@@ -35,5 +35,6 @@
 #define MEMORY_SLOT_CLASS_NAME "MemorySlot"
 #define MEMORY_PHYS_PKG_CLASS_NAME "MemoryPhysicalPackage"
 #define PORT_PHYS_CONN_CLASS_NAME "PortPhysicalConnector"
+#define SYSTEM_SLOT_CLASS_NAME "SystemSlot"
 
 #endif /* LMI_HARDWARE_H_ */
diff --git a/src/hardware/LMI_SystemSlotContainerProvider.c b/src/hardware/LMI_SystemSlotContainerProvider.c
new file mode 100644
index 0000000..c752fbe
--- /dev/null
+++ b/src/hardware/LMI_SystemSlotContainerProvider.c
@@ -0,0 +1,270 @@
+/*
+ * Copyright (C) 2013 Red Hat, Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Authors: Peter Schiffer <pschiffe@redhat.com>
+ */
+
+#include <konkret/konkret.h>
+#include "LMI_SystemSlotContainer.h"
+#include "LMI_Hardware.h"
+#include "globals.h"
+#include "dmidecode.h"
+
+static const CMPIBroker* _cb;
+
+static void LMI_SystemSlotContainerInitialize()
+{
+}
+
+static CMPIStatus LMI_SystemSlotContainerCleanup( 
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc, 
+    CMPIBoolean term)
+{
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotContainerEnumInstanceNames( 
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop)
+{
+    return KDefaultEnumerateInstanceNames(
+        _cb, mi, cc, cr, cop);
+}
+
+static CMPIStatus LMI_SystemSlotContainerEnumInstances( 
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc, 
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop, 
+    const char** properties) 
+{
+    LMI_SystemSlotContainer lmi_slot_container;
+    LMI_SystemSlotRef lmi_slot;
+    LMI_ChassisRef lmi_chassis;
+    const char *ns = KNameSpace(cop);
+    unsigned i;
+    DmiChassis dmi_chassis;
+    DmiSystemSlot *dmi_slots = NULL;
+    unsigned dmi_slots_nb = 0;
+
+    if (dmi_get_chassis(&dmi_chassis) != 0) {
+        goto done;
+    }
+    if (dmi_get_system_slots(&dmi_slots, &dmi_slots_nb) != 0 || dmi_slots_nb < 1) {
+        goto done;
+    }
+
+    LMI_ChassisRef_Init(&lmi_chassis, _cb, ns);
+    LMI_ChassisRef_Set_CreationClassName(&lmi_chassis,
+            ORGID "_" CHASSIS_CLASS_NAME);
+    if (strcmp(dmi_chassis.serial_number, "Not Specified") == 0) {
+        LMI_ChassisRef_Set_Tag(&lmi_chassis, "0");
+    } else {
+        LMI_ChassisRef_Set_Tag(&lmi_chassis, dmi_chassis.serial_number);
+    }
+
+    for (i = 0; i < dmi_slots_nb; i++) {
+        LMI_SystemSlotContainer_Init(&lmi_slot_container, _cb, ns);
+
+        LMI_SystemSlotRef_Init(&lmi_slot, _cb, ns);
+        LMI_SystemSlotRef_Set_CreationClassName(&lmi_slot,
+                ORGID "_" SYSTEM_SLOT_CLASS_NAME);
+        LMI_SystemSlotRef_Set_Tag(&lmi_slot, dmi_slots[i].name);
+
+        LMI_SystemSlotContainer_Set_GroupComponent(
+                &lmi_slot_container, &lmi_chassis);
+        LMI_SystemSlotContainer_Set_PartComponent(
+                &lmi_slot_container, &lmi_slot);
+
+        KReturnInstance(cr, lmi_slot_container);
+    }
+
+done:
+    dmi_free_chassis(&dmi_chassis);
+    dmi_free_system_slots(&dmi_slots, &dmi_slots_nb);
+
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotContainerGetInstance( 
+    CMPIInstanceMI* mi, 
+    const CMPIContext* cc,
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop, 
+    const char** properties) 
+{
+    return KDefaultGetInstance(
+        _cb, mi, cc, cr, cop, properties);
+}
+
+static CMPIStatus LMI_SystemSlotContainerCreateInstance( 
+    CMPIInstanceMI* mi, 
+    const CMPIContext* cc, 
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop, 
+    const CMPIInstance* ci) 
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotContainerModifyInstance( 
+    CMPIInstanceMI* mi, 
+    const CMPIContext* cc, 
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop,
+    const CMPIInstance* ci, 
+    const char**properties) 
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotContainerDeleteInstance( 
+    CMPIInstanceMI* mi, 
+    const CMPIContext* cc, 
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop) 
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotContainerExecQuery(
+    CMPIInstanceMI* mi, 
+    const CMPIContext* cc, 
+    const CMPIResult* cr, 
+    const CMPIObjectPath* cop, 
+    const char* lang, 
+    const char* query) 
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotContainerAssociationCleanup( 
+    CMPIAssociationMI* mi,
+    const CMPIContext* cc, 
+    CMPIBoolean term) 
+{
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotContainerAssociators(
+    CMPIAssociationMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* assocClass,
+    const char* resultClass,
+    const char* role,
+    const char* resultRole,
+    const char** properties)
+{
+    return KDefaultAssociators(
+        _cb,
+        mi,
+        cc,
+        cr,
+        cop,
+        LMI_SystemSlotContainer_ClassName,
+        assocClass,
+        resultClass,
+        role,
+        resultRole,
+        properties);
+}
+
+static CMPIStatus LMI_SystemSlotContainerAssociatorNames(
+    CMPIAssociationMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* assocClass,
+    const char* resultClass,
+    const char* role,
+    const char* resultRole)
+{
+    return KDefaultAssociatorNames(
+        _cb,
+        mi,
+        cc,
+        cr,
+        cop,
+        LMI_SystemSlotContainer_ClassName,
+        assocClass,
+        resultClass,
+        role,
+        resultRole);
+}
+
+static CMPIStatus LMI_SystemSlotContainerReferences(
+    CMPIAssociationMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* assocClass,
+    const char* role,
+    const char** properties)
+{
+    return KDefaultReferences(
+        _cb,
+        mi,
+        cc,
+        cr,
+        cop,
+        LMI_SystemSlotContainer_ClassName,
+        assocClass,
+        role,
+        properties);
+}
+
+static CMPIStatus LMI_SystemSlotContainerReferenceNames(
+    CMPIAssociationMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* assocClass,
+    const char* role)
+{
+    return KDefaultReferenceNames(
+        _cb,
+        mi,
+        cc,
+        cr,
+        cop,
+        LMI_SystemSlotContainer_ClassName,
+        assocClass,
+        role);
+}
+
+CMInstanceMIStub( 
+    LMI_SystemSlotContainer,
+    LMI_SystemSlotContainer,
+    _cb,
+    LMI_SystemSlotContainerInitialize())
+
+CMAssociationMIStub( 
+    LMI_SystemSlotContainer,
+    LMI_SystemSlotContainer,
+    _cb,
+    LMI_SystemSlotContainerInitialize())
+
+KONKRET_REGISTRATION(
+    "root/cimv2",
+    "LMI_SystemSlotContainer",
+    "LMI_SystemSlotContainer",
+    "instance association")
diff --git a/src/hardware/LMI_SystemSlotProvider.c b/src/hardware/LMI_SystemSlotProvider.c
new file mode 100644
index 0000000..3feba71
--- /dev/null
+++ b/src/hardware/LMI_SystemSlotProvider.c
@@ -0,0 +1,325 @@
+/*
+ * Copyright (C) 2013 Red Hat, Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * Authors: Peter Schiffer <pschiffe@redhat.com>
+ */
+
+#include <konkret/konkret.h>
+#include "LMI_SystemSlot.h"
+#include "LMI_Hardware.h"
+#include "globals.h"
+#include "dmidecode.h"
+
+CMPIUint16 get_connectorlayout_slot(const char *dmi_val);
+CMPIUint16 get_maxlinkwidth(const char *dmi_val);
+
+static const CMPIBroker* _cb = NULL;
+
+static void LMI_SystemSlotInitialize()
+{
+}
+
+static CMPIStatus LMI_SystemSlotCleanup(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    CMPIBoolean term)
+{
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotEnumInstanceNames(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop)
+{
+    return KDefaultEnumerateInstanceNames(
+        _cb, mi, cc, cr, cop);
+}
+
+static CMPIStatus LMI_SystemSlotEnumInstances(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char** properties)
+{
+    LMI_SystemSlot lmi_slot;
+    const char *ns = KNameSpace(cop);
+    CMPIUint16 conn_layout, maxlinkwidth;
+    char instance_id[INSTANCE_ID_LEN];
+    unsigned i;
+    DmiSystemSlot *dmi_slots = NULL;
+    unsigned dmi_slots_nb = 0;
+
+    if (dmi_get_system_slots(&dmi_slots, &dmi_slots_nb) != 0 || dmi_slots_nb < 1) {
+        goto done;
+    }
+
+    for (i = 0; i < dmi_slots_nb; i++) {
+        LMI_SystemSlot_Init(&lmi_slot, _cb, ns);
+
+        LMI_SystemSlot_Set_CreationClassName(&lmi_slot,
+                ORGID "_" SYSTEM_SLOT_CLASS_NAME);
+        LMI_SystemSlot_Set_Caption(&lmi_slot, "System Slot");
+        LMI_SystemSlot_Set_Description(&lmi_slot,
+                "This object represents one system slot.");
+        LMI_SystemSlot_Set_ConnectorGender(&lmi_slot,
+                LMI_SystemSlot_ConnectorGender_Female);
+
+        snprintf(instance_id, INSTANCE_ID_LEN,
+                ORGID ":" ORGID "_" SYSTEM_SLOT_CLASS_NAME ":%s",
+                dmi_slots[i].name);
+        conn_layout = get_connectorlayout_slot(dmi_slots[i].type);
+        maxlinkwidth = get_maxlinkwidth(dmi_slots[i].link_width);
+
+        LMI_SystemSlot_Set_Tag(&lmi_slot, dmi_slots[i].name);
+        LMI_SystemSlot_Set_Number(&lmi_slot, dmi_slots[i].number);
+        LMI_SystemSlot_Set_ConnectorLayout(&lmi_slot, conn_layout);
+        LMI_SystemSlot_Set_ElementName(&lmi_slot, dmi_slots[i].name);
+        LMI_SystemSlot_Set_Name(&lmi_slot, dmi_slots[i].name);
+        LMI_SystemSlot_Set_InstanceID(&lmi_slot, instance_id);
+
+        if (conn_layout == LMI_SystemSlot_ConnectorLayout_Other) {
+            if (strcmp(dmi_slots[i].type, "Other") != 0) {
+                LMI_SystemSlot_Set_ConnectorDescription(&lmi_slot,
+                        dmi_slots[i].type);
+            } else {
+                LMI_SystemSlot_Set_ConnectorDescription(&lmi_slot,
+                        dmi_slots[i].name);
+            }
+        }
+        if (dmi_slots[i].data_width) {
+            LMI_SystemSlot_Set_MaxDataWidth(&lmi_slot, dmi_slots[i].data_width);
+        }
+        if (maxlinkwidth) {
+            LMI_SystemSlot_Set_MaxLinkWidth(&lmi_slot, maxlinkwidth);
+        }
+        if (dmi_slots[i].supports_hotplug) {
+            LMI_SystemSlot_Set_SupportsHotPlug(&lmi_slot,
+                    dmi_slots[i].supports_hotplug);
+        }
+
+        KReturnInstance(cr, lmi_slot);
+    }
+
+done:
+    dmi_free_system_slots(&dmi_slots, &dmi_slots_nb);
+
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotGetInstance(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char** properties)
+{
+    return KDefaultGetInstance(
+        _cb, mi, cc, cr, cop, properties);
+}
+
+static CMPIStatus LMI_SystemSlotCreateInstance(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const CMPIInstance* ci)
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotModifyInstance(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const CMPIInstance* ci,
+    const char** properties)
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotDeleteInstance(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop)
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+static CMPIStatus LMI_SystemSlotExecQuery(
+    CMPIInstanceMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* lang,
+    const char* query)
+{
+    CMReturn(CMPI_RC_ERR_NOT_SUPPORTED);
+}
+
+CMInstanceMIStub(
+    LMI_SystemSlot,
+    LMI_SystemSlot,
+    _cb,
+    LMI_SystemSlotInitialize())
+
+static CMPIStatus LMI_SystemSlotMethodCleanup(
+    CMPIMethodMI* mi,
+    const CMPIContext* cc,
+    CMPIBoolean term)
+{
+    CMReturn(CMPI_RC_OK);
+}
+
+static CMPIStatus LMI_SystemSlotInvokeMethod(
+    CMPIMethodMI* mi,
+    const CMPIContext* cc,
+    const CMPIResult* cr,
+    const CMPIObjectPath* cop,
+    const char* meth,
+    const CMPIArgs* in,
+    CMPIArgs* out)
+{
+    return LMI_SystemSlot_DispatchMethod(
+        _cb, mi, cc, cr, cop, meth, in, out);
+}
+
+/*
+ * Get max link width according to the dmidecode.
+ * @param dmi_val from dmidecode
+ * @return CIM id of max link width
+ */
+CMPIUint16 get_maxlinkwidth(const char *dmi_val)
+{
+    if (!dmi_val || !strlen(dmi_val)) {
+        return 0; /* Unknown */
+    }
+
+    static struct {
+        CMPIUint16 cim_val;     /* CIM value */
+        char *dmi_val;          /* dmidecode value */
+    } values[] = {
+        {0, "Unknown"},
+        {2, "x1"},
+        {3, "x2"},
+        {4, "x4"},
+        {5, "x8"},
+        {6, "x12"},
+        {7, "x16"},
+        {8, "x32"},
+    };
+
+    size_t i, val_length = sizeof(values) / sizeof(values[0]);
+
+    for (i = 0; i < val_length; i++) {
+        if (strcmp(dmi_val, values[i].dmi_val) == 0) {
+            return values[i].cim_val;
+        }
+    }
+
+    return 0; /* Unknown */
+}
+
+/*
+ * Get connector layout for slot according to the dmidecode.
+ * @param dmi_val from dmidecode
+ * @return CIM id of connector layout
+ */
+CMPIUint16 get_connectorlayout_slot(const char *dmi_val)
+{
+    if (!dmi_val || !strlen(dmi_val)) {
+        return 0; /* Unknown */
+    }
+
+    static struct {
+        CMPIUint16 cim_val;     /* CIM value */
+        char *dmi_val;          /* dmidecode value */
+    } values[] = {
+        {0,  "Unknown"},
+        {1,  "Other"},
+        /*
+        {2,  "RS232"},
+        {3,  "BNC"},
+        {4,  "RJ11"},
+        {5,  "RJ45"},
+        {6,  "DB9"},
+        {7,  "Slot"},
+        {8,  "SCSI High Density"},
+        {9,  "SCSI Low Density"},
+        {10, "Ribbon"},
+        {11, "AUI"},
+        {12, "Fiber SC"},
+        {13, "Fiber ST"},
+        {14, "FDDI-MIC"},
+        {15, "Fiber-RTMJ"},
+        */
+        {16, "PCI"},
+        {17, "PCI-X"},
+        {18, "PCI Express"},
+        {18, "PCI Express 2"},
+        {18, "PCI Express 3"},
+        {19, "PCI Express x1"},
+        {19, "PCI Express 2 x1"},
+        {19, "PCI Express 3 x1"},
+        {20, "PCI Express x2"},
+        {20, "PCI Express 2 x2"},
+        {20, "PCI Express 3 x2"},
+        {21, "PCI Express x4"},
+        {21, "PCI Express 2 x4"},
+        {21, "PCI Express 3 x4"},
+        {22, "PCI Express x8"},
+        {22, "PCI Express 2 x8"},
+        {22, "PCI Express 3 x8"},
+        {23, "PCI Express x16"},
+        {23, "PCI Express 2 x16"},
+        {23, "PCI Express 3 x16"},
+        /*
+        {24, "PCI Express x32"},
+        {24, "PCI Express 2 x32"},
+        {24, "PCI Express 3 x32"},
+        {25, "PCI Express x64"},
+        {25, "PCI Express 2 x64"},
+        {25, "PCI Express 3 x64"},
+        */
+    };
+
+    size_t i, val_length = sizeof(values) / sizeof(values[0]);
+
+    for (i = 0; i < val_length; i++) {
+        if (strcmp(dmi_val, values[i].dmi_val) == 0) {
+            return values[i].cim_val;
+        }
+    }
+
+    return 1; /* Other */
+}
+
+CMMethodMIStub(
+    LMI_SystemSlot,
+    LMI_SystemSlot,
+    _cb,
+    LMI_SystemSlotInitialize())
+
+KONKRET_REGISTRATION(
+    "root/cimv2",
+    "LMI_SystemSlot",
+    "LMI_SystemSlot",
+    "instance method")
diff --git a/src/hardware/dmidecode.c b/src/hardware/dmidecode.c
index cbee376..f29596f 100644
--- a/src/hardware/dmidecode.c
+++ b/src/hardware/dmidecode.c
@@ -1649,3 +1649,213 @@ void dmi_free_ports(DmiPort **ports, unsigned *ports_nb)
     *ports_nb = 0;
     *ports = NULL;
 }
+
+
+/******************************************************************************
+ * DmiSystemSlot
+ */
+
+/*
+ * Initialize DmiSystemSlot attributes.
+ * @param slot
+ */
+void init_dmislot_struct(DmiSystemSlot *slot)
+{
+    slot->name = NULL;
+    slot->number = 0;
+    slot->type = NULL;
+    slot->data_width = 0;
+    slot->link_width = NULL;
+    slot->supports_hotplug = 0;
+}
+
+/*
+ * Check attributes of slot structure and fill in defaults if needed.
+ * @param slot
+ * @return 0 if success, negative value otherwise
+ */
+short check_dmislot_attributes(DmiSystemSlot *slot)
+{
+    short ret = -1;
+
+    if (!slot->name) {
+        if (!(slot->name = strdup("System slot"))) {
+            ret = -2;
+            goto done;
+        }
+    }
+    if (!slot->type) {
+        if (!(slot->type = strdup("Unknown"))) {
+            ret = -3;
+            goto done;
+        }
+    }
+    if (!slot->link_width) {
+        if (!(slot->link_width = strdup("Unknown"))) {
+            ret = -4;
+            goto done;
+        }
+    }
+
+    ret = 0;
+
+done:
+    if (ret != 0) {
+        warn("Failed to allocate memory.");
+    }
+
+    return ret;
+}
+
+short dmi_get_system_slots(DmiSystemSlot **slots, unsigned *slots_nb)
+{
+    short ret = -1;
+    int curr_slot = -1;
+    unsigned i, buffer_size = 0;
+    char **buffer = NULL, *buf;
+
+    *slots_nb = 0;
+
+    /* get dmidecode output */
+    if (run_command("dmidecode -t 9", &buffer, &buffer_size) != 0) {
+        ret = -2;
+        goto done;
+    }
+
+    /* count slots */
+    for (i = 0; i < buffer_size; i++) {
+        if (strncmp(buffer[i], "Handle 0x", 9) == 0) {
+            (*slots_nb)++;
+        }
+    }
+
+    /* if no slot was found */
+    if (*slots_nb < 1) {
+        warn("Dmidecode didn't recognize any system slot.");
+        ret = -3;
+        goto done;
+    }
+
+    /* allocate memory for slots */
+    *slots = (DmiSystemSlot *)calloc(*slots_nb, sizeof(DmiSystemSlot));
+    if (!(*slots)) {
+        warn("Failed to allocate memory.");
+        ret = -4;
+        goto done;
+    }
+
+    /* parse information about slots */
+    for (i = 0; i < buffer_size; i++) {
+        if (strncmp(buffer[i], "Handle 0x", 9) == 0) {
+            curr_slot++;
+            init_dmislot_struct(&(*slots)[curr_slot]);
+            (*slots)[curr_slot].number = curr_slot;
+            continue;
+        }
+        /* ignore first useless lines */
+        if (curr_slot < 0) {
+            continue;
+        }
+        /* Name */
+        buf = copy_string_part_after_delim(buffer[i], "Designation: ");
+        if (buf) {
+            (*slots)[curr_slot].name = buf;
+            buf = NULL;
+            continue;
+        }
+        /* Type, data width, link width */
+        buf = copy_string_part_after_delim(buffer[i], "Type: ");
+        if (buf) {
+            char **exploded_buf = NULL;
+            unsigned j, exploded_buf_size = 0, from = 0;
+
+            /* Dmi type consists of 2 information. First is data width (NUM-bit)
+               or link width (xNUM) or nothing, second is slot type. */
+            if (explode(buf, NULL, &exploded_buf, &exploded_buf_size) != 0) {
+                ret = -5;
+                goto done;
+            }
+            if (exploded_buf_size < 1) {
+                continue;
+            }
+
+            if (exploded_buf[0][0] == 'x') {
+                (*slots)[curr_slot].link_width = strdup(exploded_buf[0]);
+                if (!(*slots)[curr_slot].link_width) {
+                    free_2d_buffer(&exploded_buf, &exploded_buf_size);
+                    warn("Failed to allocate memory.");
+                    ret = -6;
+                    goto done;
+                }
+                from = 1;
+            } else if (strstr(exploded_buf[0], "-bit")) {
+                sscanf(buf, "%u-bit ", &(*slots)[curr_slot].data_width);
+                from = 1;
+            }
+
+            for (j = from; j < exploded_buf_size; j++) {
+                /* If type is not NULL, we need to add space before another string. */
+                if (!(*slots)[curr_slot].type) {
+                    (*slots)[curr_slot].type = append_str(
+                            (*slots)[curr_slot].type, exploded_buf[j], NULL);
+                } else {
+                    (*slots)[curr_slot].type = append_str(
+                            (*slots)[curr_slot].type, " ", exploded_buf[j], NULL);
+                }
+                /* If type is NULL here, append_str failed. */
+                if (!(*slots)[curr_slot].type) {
+                    free_2d_buffer(&exploded_buf, &exploded_buf_size);
+                    ret = -7;
+                    goto done;
+                }
+            }
+
+            free_2d_buffer(&exploded_buf, &exploded_buf_size);
+            free(buf);
+            buf = NULL;
+            continue;
+        }
+        if (strcmp(buffer[i], "Hot-plug devices are supported") == 0) {
+            (*slots)[curr_slot].supports_hotplug = 1;
+        }
+    }
+
+    /* fill in default attributes if needed */
+    for (i = 0; i < *slots_nb; i++) {
+        if (check_dmislot_attributes(&(*slots)[i]) != 0) {
+            ret = -8;
+            goto done;
+        }
+    }
+
+    ret = 0;
+
+done:
+    free_2d_buffer(&buffer, &buffer_size);
+
+    if (ret != 0) {
+        dmi_free_system_slots(slots, slots_nb);
+    }
+
+    return ret;
+}
+
+void dmi_free_system_slots(DmiSystemSlot **slots, unsigned *slots_nb)
+{
+    unsigned i;
+
+    if (*slots_nb > 0) {
+        for (i = 0; i < *slots_nb; i++) {
+            free((*slots)[i].name);
+            (*slots)[i].name = NULL;
+            free((*slots)[i].type);
+            (*slots)[i].type = NULL;
+            free((*slots)[i].link_width);
+            (*slots)[i].link_width = NULL;
+        }
+        free(*slots);
+    }
+
+    *slots_nb = 0;
+    *slots = NULL;
+}
diff --git a/src/hardware/dmidecode.h b/src/hardware/dmidecode.h
index 5423c93..76627af 100644
--- a/src/hardware/dmidecode.h
+++ b/src/hardware/dmidecode.h
@@ -125,6 +125,16 @@ typedef struct _DmiPort {
     char *port_type;                /* Port Type */
 } DmiPort;
 
+/* System Slot from dmidecode. */
+typedef struct _DmiSystemSlot {
+    char *name;                     /* Name */
+    unsigned number;                /* Slot number */
+    char *type;                     /* Slot type */
+    unsigned data_width;            /* Data width */
+    char *link_width;               /* Link width */
+    short supports_hotplug;         /* Supports slot hotplug? */
+} DmiSystemSlot;
+
 /*
  * Get array of processors according to the dmidecode program.
  * @param cpu array of cpus, this function will allocate necessary memory,
@@ -215,5 +225,21 @@ short dmi_get_ports(DmiPort **ports, unsigned *ports_nb);
  */
 void dmi_free_ports(DmiPort **ports, unsigned *ports_nb);
 
+/*
+ * Get array of system slots according to the dmidecode program.
+ * @param slots array of slots, this function will allocate necessary memory,
+ *      but caller is responsible for freeing it
+ * @param slots_nb number of slots
+ * @return 0 if success, negative value otherwise
+ */
+short dmi_get_system_slots(DmiSystemSlot **slots, unsigned *slots_nb);
+
+/*
+ * Free array of slot structures.
+ * @param slots array of slots
+ * @param slots_nb number of slots
+ */
+void dmi_free_system_slots(DmiSystemSlot **slots, unsigned *slots_nb);
+
 
 #endif /* DMIDECODE_H_ */