scsi-disk: let the user customize vendor and product name

This patch adds two new properties vendor and product to SCSI disks.
These options let the user customize the inquiry data returned by the
disk.
Signed-off-by: NYan Vugenfirer <yan@ravellosystems.com>
Signed-off-by: NDmitry Fleytman <dmitry.fleytman@ravellosystems.com>
[ Use vendor and product property names, avoid "if" statements. - PB ]
Signed-off-by: NPaolo Bonzini <pbonzini@redhat.com>

hw/scsi-disk.c

@@ -72,6 +72,8 @@ struct SCSIDiskState
     QEMUBH *bh;
     char *version;
     char *serial;
+    char *vendor;
+    char *product;
     bool tray_open;
     bool tray_locked;
 };
@@ -669,12 +671,10 @@ static int scsi_disk_emulate_inquiry(SCSIRequest *req, uint8_t *outbuf)
 
     outbuf[0] = s->qdev.type & 0x1f;
     outbuf[1] = (s->features & (1 << SCSI_DISK_F_REMOVABLE)) ? 0x80 : 0;
-    if (s->qdev.type == TYPE_ROM) {
-        memcpy(&outbuf[16], "QEMU CD-ROM     ", 16);
-    } else {
-        memcpy(&outbuf[16], "QEMU HARDDISK   ", 16);
-    }
-    memcpy(&outbuf[8], "QEMU    ", 8);
+
+    strpadcpy((char *) &outbuf[16], 16, s->product, ' ');
+    strpadcpy((char *) &outbuf[8], 8, s->vendor, ' ');
+
     memset(&outbuf[32], 0, 4);
     memcpy(&outbuf[32], s->version, MIN(4, strlen(s->version)));
     /*
@@ -1757,6 +1757,9 @@ static int scsi_initfn(SCSIDevice *dev)
     if (!s->version) {
         s->version = g_strdup(qemu_get_version());
     }
+    if (!s->vendor) {
+        s->vendor = g_strdup("QEMU");
+    }
 
     if (bdrv_is_sg(s->qdev.conf.bs)) {
         error_report("unwanted /dev/sg*");
@@ -1778,6 +1781,9 @@ static int scsi_hd_initfn(SCSIDevice *dev)
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
     s->qdev.blocksize = s->qdev.conf.logical_block_size;
     s->qdev.type = TYPE_DISK;
+    if (!s->product) {
+        s->product = g_strdup("QEMU HARDDISK");
+    }
     return scsi_initfn(&s->qdev);
 }
 
@@ -1787,6 +1793,9 @@ static int scsi_cd_initfn(SCSIDevice *dev)
     s->qdev.blocksize = 2048;
     s->qdev.type = TYPE_ROM;
     s->features |= 1 << SCSI_DISK_F_REMOVABLE;
+    if (!s->product) {
+        s->product = g_strdup("QEMU CD-ROM");
+    }
     return scsi_initfn(&s->qdev);
 }
 
@@ -1954,10 +1963,12 @@ static SCSIRequest *scsi_block_new_request(SCSIDevice *d, uint32_t tag,
 }
 #endif
 
-#define DEFINE_SCSI_DISK_PROPERTIES()                           \
-    DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf),          \
-    DEFINE_PROP_STRING("ver",  SCSIDiskState, version),         \
-    DEFINE_PROP_STRING("serial",  SCSIDiskState, serial)
+#define DEFINE_SCSI_DISK_PROPERTIES()                                \
+    DEFINE_BLOCK_PROPERTIES(SCSIDiskState, qdev.conf),               \
+    DEFINE_PROP_STRING("ver", SCSIDiskState, version),               \
+    DEFINE_PROP_STRING("serial", SCSIDiskState, serial),             \
+    DEFINE_PROP_STRING("vendor", SCSIDiskState, vendor),             \
+    DEFINE_PROP_STRING("product", SCSIDiskState, product)
 
 static Property scsi_hd_properties[] = {
     DEFINE_SCSI_DISK_PROPERTIES(),