Merge "Introduce API V2 for FUSE_PASSTHROUGH_OPEN" into sc-dev am: 48ea17ee4b
Original change: https://googleplex-android-review.googlesource.com/c/platform/external/libfuse/+/14529475
Change-Id: I4e83cbd647b1fb1484fbe543fab7f83e44b33735
diff --git a/include/fuse_kernel.h b/include/fuse_kernel.h
index 55d8e2c..bd8794e 100644
--- a/include/fuse_kernel.h
+++ b/include/fuse_kernel.h
@@ -836,6 +836,7 @@
#define FUSE_DEV_IOC_CLONE _IOR(229, 0, uint32_t)
#define FUSE_DEV_IOC_PASSTHROUGH_OPEN_V0 _IOW(229, 1, struct fuse_passthrough_out_v0)
#define FUSE_DEV_IOC_PASSTHROUGH_OPEN_V1 _IOW(229, 127, struct fuse_passthrough_out_v0)
+#define FUSE_DEV_IOC_PASSTHROUGH_OPEN_V2 _IOW(229, 126, uint32_t)
struct fuse_lseek_in {
uint64_t fh;
diff --git a/lib/fuse_lowlevel.c b/lib/fuse_lowlevel.c
index baa6d2b..a4a4df0 100644
--- a/lib/fuse_lowlevel.c
+++ b/lib/fuse_lowlevel.c
@@ -463,6 +463,7 @@
FUSE_PASSTHROUGH_API_UNAVAILABLE,
FUSE_PASSTHROUGH_API_V0,
FUSE_PASSTHROUGH_API_V1,
+ FUSE_PASSTHROUGH_API_V2,
FUSE_PASSTHROUGH_API_STABLE,
};
@@ -490,7 +491,14 @@
switch (passthrough_version) {
case FUSE_PASSTHROUGH_API_STABLE:
/* There is not a stable API yet */
- passthrough_version = FUSE_PASSTHROUGH_API_V1;
+ passthrough_version = FUSE_PASSTHROUGH_API_V2;
+ case FUSE_PASSTHROUGH_API_V2: {
+ ret = ioctl(req->se->fd, FUSE_DEV_IOC_PASSTHROUGH_OPEN_V2, &fd);
+ if (ret == -1 && errno == ENOTTY)
+ passthrough_version = FUSE_PASSTHROUGH_API_V1;
+ else
+ break;
+ }
case FUSE_PASSTHROUGH_API_V1: {
struct fuse_passthrough_out_v0 out = {};
out.fd = fd;
