Copy from https://gitlab.com/virtio-fs/qemu
@21336c0f3d05a97f5c409bbc894c19d87259655c.
Signed-off-by: Fotis Xenakis <fo...@windowslive.com>
---
fs/virtiofs/fuse_kernel.h | 88 +++++++++++++++++++++++++++++++++++----
1 file changed, 81 insertions(+), 7 deletions(-)
diff --git a/fs/virtiofs/fuse_kernel.h b/fs/virtiofs/fuse_kernel.h
index 018a00a2..26e7de1b 100644
--- a/fs/virtiofs/fuse_kernel.h
+++ b/fs/virtiofs/fuse_kernel.h
@@ -38,6 +38,43 @@
*
* Protocol changelog:
*
+ * 7.1:
+ * - add the following messages:
+ * FUSE_SETATTR, FUSE_SYMLINK, FUSE_MKNOD, FUSE_MKDIR, FUSE_UNLINK,
+ * FUSE_RMDIR, FUSE_RENAME, FUSE_LINK, FUSE_OPEN, FUSE_READ, FUSE_WRITE,
+ * FUSE_RELEASE, FUSE_FSYNC, FUSE_FLUSH, FUSE_SETXATTR, FUSE_GETXATTR,
+ * FUSE_LISTXATTR, FUSE_REMOVEXATTR, FUSE_OPENDIR, FUSE_READDIR,
+ * FUSE_RELEASEDIR
+ * - add padding to messages to accommodate 32-bit servers on 64-bit kernels
+ *
+ * 7.2:
+ * - add FOPEN_DIRECT_IO and FOPEN_KEEP_CACHE flags
+ * - add FUSE_FSYNCDIR message
+ *
+ * 7.3:
+ * - add FUSE_ACCESS message
+ * - add FUSE_CREATE message
+ * - add filehandle to fuse_setattr_in
+ *
+ * 7.4:
+ * - add frsize to fuse_kstatfs
+ * - clean up request size limit checking
+ *
+ * 7.5:
+ * - add flags and max_write to fuse_init_out
+ *
+ * 7.6:
+ * - add max_readahead to fuse_init_in and fuse_init_out
+ *
+ * 7.7:
+ * - add FUSE_INTERRUPT message
+ * - add POSIX file lock support
+ *
+ * 7.8:
+ * - add lock_owner and flags fields to fuse_release_in
+ * - add FUSE_BMAP message
+ * - add FUSE_DESTROY message
+ *
* 7.9:
* - new fuse_getattr_in input argument of GETATTR
* - add lk_flags in fuse_lk_in
@@ -133,16 +170,14 @@
*
* 7.31
* - add FUSE_WRITE_KILL_PRIV flag
+ * - add FUSE_SETUPMAPPING and FUSE_REMOVEMAPPING
+ * - add map_alignment to fuse_init_out, add FUSE_MAP_ALIGNMENT flag
*/
#ifndef _LINUX_FUSE_H
#define _LINUX_FUSE_H
-#ifdef __KERNEL__
-#include <linux/types.h>
-#else
#include <stdint.h>
-#endif
/*
* Version negotiation:
@@ -274,6 +309,7 @@ struct fuse_file_lock {
* FUSE_CACHE_SYMLINKS: cache READLINK responses
* FUSE_NO_OPENDIR_SUPPORT: kernel supports zero-message opendir
* FUSE_EXPLICIT_INVAL_DATA: only invalidate cached pages on explicit request
+ * FUSE_MAP_ALIGNMENT: map_alignment field is valid
*/
#define FUSE_ASYNC_READ (1 << 0)
#define FUSE_POSIX_LOCKS (1 << 1)
@@ -301,6 +337,7 @@ struct fuse_file_lock {
#define FUSE_CACHE_SYMLINKS (1 << 23)
#define FUSE_NO_OPENDIR_SUPPORT (1 << 24)
#define FUSE_EXPLICIT_INVAL_DATA (1 << 25)
+#define FUSE_MAP_ALIGNMENT (1 << 26)
/**
* CUSE INIT request/reply flags
@@ -422,9 +459,15 @@ enum fuse_opcode {
FUSE_RENAME2 = 45,
FUSE_LSEEK = 46,
FUSE_COPY_FILE_RANGE = 47,
+ FUSE_SETUPMAPPING = 48,
+ FUSE_REMOVEMAPPING = 49,
/* CUSE specific operations */
- CUSE_INIT = 4096
+ CUSE_INIT = 4096,
+
+ /* Reserved opcodes: helpful to detect structure endian-ness */
+ CUSE_INIT_BSWAP_RESERVED = 1048576, /* CUSE_INIT << 8 */
+ FUSE_INIT_BSWAP_RESERVED = 436207616, /* FUSE_INIT << 24 */
};
enum fuse_notify_code {
@@ -434,7 +477,7 @@ enum fuse_notify_code {
FUSE_NOTIFY_STORE = 4,
FUSE_NOTIFY_RETRIEVE = 5,
FUSE_NOTIFY_DELETE = 6,
- FUSE_NOTIFY_CODE_MAX
+ FUSE_NOTIFY_CODE_MAX,
};
/* The read buffer is required to be at least 8k, but may be much larger */
@@ -453,6 +496,11 @@ struct fuse_entry_out {
struct fuse_attr attr;
};
+struct fuse_entryver_out {
+ uint64_t version_index;
+ int64_t initial_version;
+};
+
struct fuse_forget_in {
uint64_t nlookup;
};
@@ -652,7 +700,7 @@ struct fuse_init_out {
uint32_t max_write;
uint32_t time_gran;
uint16_t max_pages;
- uint16_t padding;
+ uint16_t map_alignment;
uint32_t unused[8];
};
@@ -845,4 +893,30 @@ struct fuse_copy_file_range_in {
uint64_t flags;
};
+#define FUSE_SETUPMAPPING_FLAG_WRITE (1ull << 0)
+struct fuse_setupmapping_in {
+ /* An already open handle */
+ uint64_t fh;
+ /* Offset into the file to start the mapping */
+ uint64_t foffset;
+ /* Length of mapping required */
+ uint64_t len;
+ /* Flags, FUSE_SETUPMAPPING_FLAG_* */
+ uint64_t flags;
+ /* memory offset in to dax window */
+ uint64_t moffset;
+};
+
+struct fuse_removemapping_in {
+ /* number of fuse_removemapping_one follows */
+ uint32_t count;
+};
+
+struct fuse_removemapping_one {
+ /* Offset into the dax to start the unmapping */
+ uint64_t moffset;
+ /* Length of mapping required */
+ uint64_t len;
+};
+
#endif /* _LINUX_FUSE_H */
--
2.26.2
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