diff options
Diffstat (limited to 'include/sysemu/block-backend-common.h')
| -rw-r--r-- | include/sysemu/block-backend-common.h | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/include/sysemu/block-backend-common.h b/include/sysemu/block-backend-common.h index 6963bbf45a..2391679c56 100644 --- a/include/sysemu/block-backend-common.h +++ b/include/sysemu/block-backend-common.h @@ -27,6 +27,14 @@ /* Callbacks for block device models */ typedef struct BlockDevOps { + + /* + * Global state (GS) API. These functions run under the BQL. + * + * See include/block/block-global-state.h for more information about + * the GS API. + */ + /* * Runs when virtual media changed (monitor commands eject, change) * Argument load is true on load and false on eject. @@ -44,16 +52,26 @@ typedef struct BlockDevOps { * true, even if they do not support eject requests. */ void (*eject_request_cb)(void *opaque, bool force); - /* - * Is the virtual tray open? - * Device models implement this only when the device has a tray. - */ - bool (*is_tray_open)(void *opaque); + /* * Is the virtual medium locked into the device? * Device models implement this only when device has such a lock. */ bool (*is_medium_locked)(void *opaque); + + /* + * I/O API functions. These functions are thread-safe. + * + * See include/block/block-io.h for more information about + * the I/O API. + */ + + /* + * Is the virtual tray open? + * Device models implement this only when the device has a tray. + */ + bool (*is_tray_open)(void *opaque); + /* * Runs when the size changed (e.g. monitor command block_resize) */ |