[Qemu-devel] [PATCH v5] block/raw-posix.c: Fixes raw_getlength() on Mac OS X so that it reports the correct length of a real CD

[Programmingkid]

Allows for using real cdrom disc in QEMU under Mac OS X.

This command was used to see if this patch worked:
./qemu-system-i386 -drive if=none,id=drive0,file=/dev/null,format=raw

Signed-off-by: John Arbuckle <programmingk...@gmail.com>

---
Replaced -errno with 0 for ioctl() failure return value.
"make check" now passes with this patch.


 block/raw-posix.c |   18 +++++++++++++++++-
 configure         |    2 +-
 2 files changed, 18 insertions(+), 2 deletions(-)

diff --git a/block/raw-posix.c b/block/raw-posix.c
index e51293a..16fa0a4 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1312,7 +1312,23 @@ again:
         if (size == 0)
 #endif
 #if defined(__APPLE__) && defined(__MACH__)
-        size = LLONG_MAX;
+    {
+        uint64_t sectors = 0;
+        uint32_t sector_size = 0;
+
+        /* Query the number of sectors on the disk */
+        ret = ioctl(fd, DKIOCGETBLOCKCOUNT, &sectors);
+        if (ret == -1) {
+            return 0;
+        }
+
+        /* Query the size of each sector */
+        ret = ioctl(fd, DKIOCGETBLOCKSIZE, &sector_size);
+        if (ret == -1) {
+            return 0;
+        }
+        size = sectors * sector_size;
+    }
 #else
         size = lseek(fd, 0LL, SEEK_END);
         if (size < 0) {
diff --git a/configure b/configure
index cae588c..32d3d3f 100755
--- a/configure
+++ b/configure
@@ -611,7 +611,7 @@ Darwin)
   cocoa="yes"
   audio_drv_list="coreaudio"
   audio_possible_drivers="coreaudio sdl fmod"
-  LDFLAGS="-framework CoreFoundation -framework IOKit $LDFLAGS"
+  LDFLAGS="-framework CoreFoundation -framework IOKit -framework 
ApplicationServices $LDFLAGS"
   libs_softmmu="-F/System/Library/Frameworks -framework Cocoa -framework IOKit 
$libs_softmmu"
   # Disable attempts to use ObjectiveC features in os/object.h since they
   # won't work when we're compiling with gcc as a C compiler.
-- 
1.7.5.4