qemu aio: parse aio support from qemu -help

Signed-off-by: NEric Blake <eblake@redhat.com>

src/qemu/qemu_capabilities.c

@@ -809,6 +809,8 @@ qemuCapsComputeCmdFlags(const char *help,
             flags |= QEMUD_CMD_FLAG_DRIVE_FORMAT;
         if (strstr(help, "readonly="))
             flags |= QEMUD_CMD_FLAG_DRIVE_READONLY;
+        if (strstr(help, "aio=threads|native"))
+            flags |= QEMUD_CMD_FLAG_DRIVE_AIO;
     }
     if ((p = strstr(help, "-vga")) && !strstr(help, "-std-vga")) {
         const char *nl = strstr(p, "\n");

src/qemu/qemu_capabilities.h

 /*
  * qemu_capabilities.h: QEMU capabilities generation
  *
- * Copyright (C) 2006-2007, 2009-2010 Red Hat, Inc.
+ * Copyright (C) 2006-2011 Red Hat, Inc.
  * Copyright (C) 2006 Daniel P. Berrange
  *
  * This library is free software; you can redistribute it and/or
@@ -85,6 +85,7 @@ enum qemuCapsFlags {
     QEMUD_CMD_FLAG_MIGRATE_QEMU_FD = (1LL << 48), /* -incoming fd:n */
     QEMUD_CMD_FLAG_BOOTINDEX     = (1LL << 49), /* -device bootindex property */
     QEMUD_CMD_FLAG_HDA_DUPLEX    = (1LL << 50), /* -device hda-duplex */
+    QEMUD_CMD_FLAG_DRIVE_AIO     = (1LL << 51), /* -drive aio= supported */
 };
 
 virCapsPtr qemuCapsInit(virCapsPtr old_caps);

tests/qemuhelptest.c

@@ -309,7 +309,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_NAME_PROCESS |
             QEMUD_CMD_FLAG_SMBIOS_TYPE |
             QEMUD_CMD_FLAG_VGA_NONE |
-            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD,
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
+            QEMUD_CMD_FLAG_DRIVE_AIO,
             12001, 0,  0);
     DO_TEST("qemu-kvm-0.12.1.2-rhel60",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -349,7 +350,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_VGA_QXL |
             QEMUD_CMD_FLAG_SPICE |
             QEMUD_CMD_FLAG_VGA_NONE |
-            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD,
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
+            QEMUD_CMD_FLAG_DRIVE_AIO,
             12001, 1,  0);
     DO_TEST("qemu-kvm-0.12.3",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -386,7 +388,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_NAME_PROCESS |
             QEMUD_CMD_FLAG_SMBIOS_TYPE |
             QEMUD_CMD_FLAG_VGA_NONE |
-            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD,
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
+            QEMUD_CMD_FLAG_DRIVE_AIO,
             12003, 1,  0);
     DO_TEST("qemu-kvm-0.13.0",
             QEMUD_CMD_FLAG_VNC_COLON |
@@ -431,7 +434,8 @@ mymain(int argc, char **argv)
             QEMUD_CMD_FLAG_SMBIOS_TYPE |
             QEMUD_CMD_FLAG_SPICE |
             QEMUD_CMD_FLAG_VGA_NONE |
-            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD,
+            QEMUD_CMD_FLAG_MIGRATE_QEMU_FD |
+            QEMUD_CMD_FLAG_DRIVE_AIO,
             13000, 1,  0);
 
     return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;