diff options
Diffstat (limited to 'drivers/virt')
| -rw-r--r-- | drivers/virt/vboxguest/vboxguest_core.c | 4 | ||||
| -rw-r--r-- | drivers/virt/vboxguest/vboxguest_core.h | 15 | ||||
| -rw-r--r-- | drivers/virt/vboxguest/vboxguest_linux.c | 3 |
3 files changed, 20 insertions, 2 deletions
diff --git a/drivers/virt/vboxguest/vboxguest_core.c b/drivers/virt/vboxguest/vboxguest_core.c index b690a8a4bf9e..8fab04e76c14 100644 --- a/drivers/virt/vboxguest/vboxguest_core.c +++ b/drivers/virt/vboxguest/vboxguest_core.c @@ -1520,7 +1520,8 @@ int vbg_core_ioctl(struct vbg_session *session, unsigned int req, void *data) /* For VMMDEV_REQUEST hdr->type != VBG_IOCTL_HDR_TYPE_DEFAULT */ if (req_no_size == VBG_IOCTL_VMMDEV_REQUEST(0) || - req == VBG_IOCTL_VMMDEV_REQUEST_BIG) + req == VBG_IOCTL_VMMDEV_REQUEST_BIG || + req == VBG_IOCTL_VMMDEV_REQUEST_BIG_ALT) return vbg_ioctl_vmmrequest(gdev, session, data); if (hdr->type != VBG_IOCTL_HDR_TYPE_DEFAULT) @@ -1558,6 +1559,7 @@ int vbg_core_ioctl(struct vbg_session *session, unsigned int req, void *data) case VBG_IOCTL_HGCM_CALL(0): return vbg_ioctl_hgcm_call(gdev, session, f32bit, data); case VBG_IOCTL_LOG(0): + case VBG_IOCTL_LOG_ALT(0): return vbg_ioctl_log(data); } diff --git a/drivers/virt/vboxguest/vboxguest_core.h b/drivers/virt/vboxguest/vboxguest_core.h index 4188c12b839f..77c3a9c8255d 100644 --- a/drivers/virt/vboxguest/vboxguest_core.h +++ b/drivers/virt/vboxguest/vboxguest_core.h @@ -15,6 +15,21 @@ #include <linux/vboxguest.h> #include "vmmdev.h" +/* + * The mainline kernel version (this version) of the vboxguest module + * contained a bug where it defined VBGL_IOCTL_VMMDEV_REQUEST_BIG and + * VBGL_IOCTL_LOG using _IOC(_IOC_READ | _IOC_WRITE, 'V', ...) instead + * of _IO(V, ...) as the out of tree VirtualBox upstream version does. + * + * These _ALT definitions keep compatibility with the wrong defines the + * mainline kernel version used for a while. + * Note the VirtualBox userspace bits have always been built against + * VirtualBox upstream's headers, so this is likely not necessary. But + * we must never break our ABI so we keep these around to be 100% sure. + */ +#define VBG_IOCTL_VMMDEV_REQUEST_BIG_ALT _IOC(_IOC_READ | _IOC_WRITE, 'V', 3, 0) +#define VBG_IOCTL_LOG_ALT(s) _IOC(_IOC_READ | _IOC_WRITE, 'V', 9, s) + struct vbg_session; /** VBox guest memory balloon. */ diff --git a/drivers/virt/vboxguest/vboxguest_linux.c b/drivers/virt/vboxguest/vboxguest_linux.c index 6e8c0f1c1056..32c2c52f7e84 100644 --- a/drivers/virt/vboxguest/vboxguest_linux.c +++ b/drivers/virt/vboxguest/vboxguest_linux.c @@ -131,7 +131,8 @@ static long vbg_misc_device_ioctl(struct file *filp, unsigned int req, * the need for a bounce-buffer and another copy later on. */ is_vmmdev_req = (req & ~IOCSIZE_MASK) == VBG_IOCTL_VMMDEV_REQUEST(0) || - req == VBG_IOCTL_VMMDEV_REQUEST_BIG; + req == VBG_IOCTL_VMMDEV_REQUEST_BIG || + req == VBG_IOCTL_VMMDEV_REQUEST_BIG_ALT; if (is_vmmdev_req) buf = vbg_req_alloc(size, VBG_IOCTL_HDR_TYPE_DEFAULT, |