make Knoppix CD-ROM probe happy

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@448 c046a42c-6fe2-441c-8c8c-71466251a162

hw/ide.c

@@ -371,6 +371,17 @@ static void padstr(char *str, const char *src, int len)
     }
 }
 
+static void padstr8(uint8_t *buf, int buf_size, const char *src)
+{
+    int i;
+    for(i = 0; i < buf_size; i++) {
+        if (*src)
+            buf[i] = *src++;
+        else
+            buf[i] = ' ';
+    }
+}
+
 static void ide_identify(IDEState *s)
 {
     uint16_t *p;
@@ -1013,6 +1024,21 @@ static void ide_atapi_cmd(IDEState *s)
         cpu_to_ube32(buf + 4, 2048);
         ide_atapi_cmd_reply(s, 8, 8);
         break;
+    case GPCMD_INQUIRY:
+        max_len = packet[4];
+        buf[0] = 0x05; /* CD-ROM */
+        buf[1] = 0x80; /* removable */
+        buf[2] = 0x00; /* ISO */
+        buf[3] = 0x21; /* ATAPI-2 (XXX: put ATAPI-4 ?) */
+        buf[4] = 31; /* additionnal length */
+        buf[5] = 0; /* reserved */
+        buf[6] = 0; /* reserved */
+        buf[7] = 0; /* reserved */
+        padstr8(buf + 8, 8, "QEMU");
+        padstr8(buf + 16, 16, "QEMU CD-ROM");
+        padstr8(buf + 32, 4, QEMU_VERSION);
+        ide_atapi_cmd_reply(s, 36, max_len);
+        break;
     default:
         error_cmd:
         ide_atapi_cmd_error(s, SENSE_ILLEGAL_REQUEST,