[Xen-changelog] [qemu-upstream-unstable] block: Make essential BlockDriver objects public

[patchbot@xxxxxxx]

commit 7e213f853551c6d528af9f7bddb3ab1b7b03903f
Author:     Max Reitz <mreitz@xxxxxxxxxx>
AuthorDate: Tue Dec 2 18:32:41 2014 +0100
Commit:     Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
CommitDate: Sun Feb 22 12:03:18 2015 -0600

    block: Make essential BlockDriver objects public
    
    There are some block drivers which are essential to QEMU and may not be
    removed: These are raw, file and qcow2 (as the default non-raw format).
    Make their BlockDriver objects public so they can be directly referenced
    throughout the block layer without needing to call bdrv_find_format()
    and having to deal with an error at runtime, while the real problem
    occurred during linking (where raw, file or qcow2 were not linked into
    qemu).
    
    Cc: qemu-stable@xxxxxxxxxx
    Signed-off-by: Max Reitz <mreitz@xxxxxxxxxx>
    Signed-off-by: Kevin Wolf <kwolf@xxxxxxxxxx>
    (cherry picked from commit 5f535a941e52229d81e55603eb69b2bd449b937a)
    Signed-off-by: Michael Roth <mdroth@xxxxxxxxxxxxxxxxxx>
---
 block/qcow2.c             |    2 +-
 block/raw-posix.c         |    2 +-
 block/raw-win32.c         |    2 +-
 block/raw_bsd.c           |    2 +-
 include/block/block_int.h |    8 ++++++++
 5 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/block/qcow2.c b/block/qcow2.c
index d120494..48aca2a 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -2847,7 +2847,7 @@ static QemuOptsList qcow2_create_opts = {
     }
 };
 
-static BlockDriver bdrv_qcow2 = {
+BlockDriver bdrv_qcow2 = {
     .format_name        = "qcow2",
     .instance_size      = sizeof(BDRVQcowState),
     .bdrv_probe         = qcow2_probe,
diff --git a/block/raw-posix.c b/block/raw-posix.c
index b1af77e..d8bbed0 100644
--- a/block/raw-posix.c
+++ b/block/raw-posix.c
@@ -1684,7 +1684,7 @@ static QemuOptsList raw_create_opts = {
     }
 };
 
-static BlockDriver bdrv_file = {
+BlockDriver bdrv_file = {
     .format_name = "file",
     .protocol_name = "file",
     .instance_size = sizeof(BDRVRawState),
diff --git a/block/raw-win32.c b/block/raw-win32.c
index 7b58881..06243d7 100644
--- a/block/raw-win32.c
+++ b/block/raw-win32.c
@@ -540,7 +540,7 @@ static QemuOptsList raw_create_opts = {
     }
 };
 
-static BlockDriver bdrv_file = {
+BlockDriver bdrv_file = {
     .format_name       = "file",
     .protocol_name     = "file",
     .instance_size     = sizeof(BDRVRawState),
diff --git a/block/raw_bsd.c b/block/raw_bsd.c
index 401b967..ea2b864 100644
--- a/block/raw_bsd.c
+++ b/block/raw_bsd.c
@@ -173,7 +173,7 @@ static int raw_probe(const uint8_t *buf, int buf_size, 
const char *filename)
     return 1;
 }
 
-static BlockDriver bdrv_raw = {
+BlockDriver bdrv_raw = {
     .format_name          = "raw",
     .bdrv_probe           = &raw_probe,
     .bdrv_reopen_prepare  = &raw_reopen_prepare,
diff --git a/include/block/block_int.h b/include/block/block_int.h
index a1c17b9..2ae82c5 100644
--- a/include/block/block_int.h
+++ b/include/block/block_int.h
@@ -411,6 +411,14 @@ struct BlockDriverState {
     Error *backing_blocker;
 };
 
+
+/* Essential block drivers which must always be statically linked into qemu, 
and
+ * which therefore can be accessed without using bdrv_find_format() */
+extern BlockDriver bdrv_file;
+extern BlockDriver bdrv_raw;
+extern BlockDriver bdrv_qcow2;
+
+
 int get_tmp_filename(char *filename, int size);
 
 void bdrv_set_io_limits(BlockDriverState *bs,
--
generated by git-patchbot for /home/xen/git/qemu-upstream-unstable.git

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