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[Qemu-devel] [PATCH 1/2] linux-user: Add loop control ioctls
From: |
Peter Maydell |
Subject: |
[Qemu-devel] [PATCH 1/2] linux-user: Add loop control ioctls |
Date: |
Mon, 4 Jul 2016 17:06:17 +0100 |
Add support for the /dev/loop-control ioctls:
LOOP_CTL_ADD
LOOP_CTL_REMOVE
LOOP_CTL_GET_FREE
Signed-off-by: Peter Maydell <address@hidden>
---
linux-user/ioctls.h | 4 ++++
linux-user/linux_loop.h | 11 ++++++++++-
linux-user/syscall_defs.h | 4 ++++
3 files changed, 18 insertions(+), 1 deletion(-)
diff --git a/linux-user/ioctls.h b/linux-user/ioctls.h
index 804f099..72cd32a 100644
--- a/linux-user/ioctls.h
+++ b/linux-user/ioctls.h
@@ -356,6 +356,10 @@
IOCTL(LOOP_GET_STATUS64, IOC_W, MK_PTR(MK_STRUCT(STRUCT_loop_info64)))
IOCTL(LOOP_CHANGE_FD, 0, TYPE_INT)
+ IOCTL(LOOP_CTL_ADD, 0, TYPE_INT)
+ IOCTL(LOOP_CTL_REMOVE, 0, TYPE_INT)
+ IOCTL(LOOP_CTL_GET_FREE, 0, TYPE_NULL)
+
IOCTL(MTIOCTOP, IOC_W, MK_PTR(MK_STRUCT(STRUCT_mtop)))
IOCTL(MTIOCGET, IOC_R, MK_PTR(MK_STRUCT(STRUCT_mtget)))
IOCTL(MTIOCPOS, IOC_R, MK_PTR(MK_STRUCT(STRUCT_mtpos)))
diff --git a/linux-user/linux_loop.h b/linux-user/linux_loop.h
index 8974caa..fd7608b 100644
--- a/linux-user/linux_loop.h
+++ b/linux-user/linux_loop.h
@@ -1,4 +1,6 @@
-/* Copied from 2.6.25 kernel headers to avoid problems on older hosts. */
+/* Copied from 2.6.25 kernel headers to avoid problems on older hosts,
+ * and subsequently updated to match newer additions to the API.
+ */
#ifndef _LINUX_LOOP_H
#define _LINUX_LOOP_H
@@ -91,5 +93,12 @@ struct loop_info64 {
#define LOOP_SET_STATUS64 0x4C04
#define LOOP_GET_STATUS64 0x4C05
#define LOOP_CHANGE_FD 0x4C06
+#define LOOP_SET_CAPACITY 0x4C07
+#define LOOP_SET_DIRECT_IO 0x4C08
+
+/* /dev/loop-control interface */
+#define LOOP_CTL_ADD 0x4C80
+#define LOOP_CTL_REMOVE 0x4C81
+#define LOOP_CTL_GET_FREE 0x4C82
#endif
diff --git a/linux-user/syscall_defs.h b/linux-user/syscall_defs.h
index 6650e26..0591abc 100644
--- a/linux-user/syscall_defs.h
+++ b/linux-user/syscall_defs.h
@@ -1129,6 +1129,10 @@ struct target_pollfd {
#define TARGET_LOOP_GET_STATUS64 0x4C05
#define TARGET_LOOP_CHANGE_FD 0x4C06
+#define TARGET_LOOP_CTL_ADD 0x4C80
+#define TARGET_LOOP_CTL_REMOVE 0x4C81
+#define TARGET_LOOP_CTL_GET_FREE 0x4C82
+
/* fb ioctls */
#define TARGET_FBIOGET_VSCREENINFO 0x4600
#define TARGET_FBIOPUT_VSCREENINFO 0x4601
--
1.9.1