diff options
Diffstat (limited to 'include')
-rw-r--r-- | include/fuse_common.h | 7 | ||||
-rw-r--r-- | include/fuse_kernel.h | 96 |
2 files changed, 101 insertions, 2 deletions
diff --git a/include/fuse_common.h b/include/fuse_common.h index 582505f..f1d4b17 100644 --- a/include/fuse_common.h +++ b/include/fuse_common.h @@ -7,7 +7,6 @@ /** @file */ -#include <stdbool.h> #if !defined(FUSE_H_) && !defined(FUSE_LOWLEVEL_H_) #error "Never include <fuse_common.h> directly; use <fuse.h> or <fuse_lowlevel.h> instead." #endif @@ -24,6 +23,7 @@ #include "fuse_opt.h" #include "fuse_log.h" #include <stdint.h> +#include <stdbool.h> #include <sys/types.h> #include <assert.h> @@ -516,6 +516,11 @@ struct fuse_loop_config_v1 { #define FUSE_CAP_NO_EXPORT_SUPPORT (1 << 30) /** + * Indicates support for io-uring between fuse-server and fuse-client + */ +#define FUSE_CAP_OVER_IO_URING (1 << 31) + +/** * Ioctl flags * * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine diff --git a/include/fuse_kernel.h b/include/fuse_kernel.h index d08b99d..5e0eb41 100644 --- a/include/fuse_kernel.h +++ b/include/fuse_kernel.h @@ -217,6 +217,18 @@ * - add backing_id to fuse_open_out, add FOPEN_PASSTHROUGH open flag * - add FUSE_NO_EXPORT_SUPPORT init flag * - add FUSE_NOTIFY_RESEND, add FUSE_HAS_RESEND init flag + * + * 7.41 + * - add FUSE_ALLOW_IDMAP + * 7.42 + * - Add FUSE_OVER_IO_URING and all other io-uring related flags and data + * structures: + * - struct fuse_uring_ent_in_out + * - struct fuse_uring_req_header + * - struct fuse_uring_cmd_req + * - FUSE_URING_IN_OUT_HEADER_SZ + * - FUSE_URING_OP_IN_OUT_SZ + * - enum fuse_uring_cmd */ #ifndef _LINUX_FUSE_H @@ -252,7 +264,7 @@ #define FUSE_KERNEL_VERSION 7 /** Minor version number of this interface */ -#define FUSE_KERNEL_MINOR_VERSION 40 +#define FUSE_KERNEL_MINOR_VERSION 42 /** The node ID of the root inode */ #define FUSE_ROOT_ID 1 @@ -421,6 +433,8 @@ struct fuse_file_lock { * FUSE_NO_EXPORT_SUPPORT: explicitly disable export support * FUSE_HAS_RESEND: kernel supports resending pending requests, and the high bit * of the request ID indicates resend requests + * FUSE_ALLOW_IDMAP: allow creation of idmapped mounts + * FUSE_OVER_IO_URING: Indicate that client supports io-uring */ #define FUSE_ASYNC_READ (1 << 0) #define FUSE_POSIX_LOCKS (1 << 1) @@ -466,6 +480,8 @@ struct fuse_file_lock { /* Obsolete alias for FUSE_DIRECT_IO_ALLOW_MMAP */ #define FUSE_DIRECT_IO_RELAX FUSE_DIRECT_IO_ALLOW_MMAP +#define FUSE_ALLOW_IDMAP (1ULL << 40) +#define FUSE_OVER_IO_URING (1ULL << 41) /** * CUSE INIT request/reply flags @@ -984,6 +1000,21 @@ struct fuse_fallocate_in { */ #define FUSE_UNIQUE_RESEND (1ULL << 63) +/** + * This value will be set by the kernel to + * (struct fuse_in_header).{uid,gid} fields in + * case when: + * - fuse daemon enabled FUSE_ALLOW_IDMAP + * - idmapping information is not available and uid/gid + * can not be mapped in accordance with an idmapping. + * + * Note: an idmapping information always available + * for inode creation operations like: + * FUSE_MKNOD, FUSE_SYMLINK, FUSE_MKDIR, FUSE_TMPFILE, + * FUSE_CREATE and FUSE_RENAME2 (with RENAME_WHITEOUT). + */ +#define FUSE_INVALID_UIDGID ((uint32_t)(-1)) + struct fuse_in_header { uint32_t len; uint32_t opcode; @@ -1186,4 +1217,67 @@ struct fuse_supp_groups { uint32_t groups[]; }; +/** + * Size of the ring buffer header + */ +#define FUSE_URING_IN_OUT_HEADER_SZ 128 +#define FUSE_URING_OP_IN_OUT_SZ 128 + +/* Used as part of the fuse_uring_req_header */ +struct fuse_uring_ent_in_out { + uint64_t flags; + + /* + * commit ID to be used in a reply to a ring request (see also + * struct fuse_uring_cmd_req) + */ + uint64_t commit_id; + + /* size of user payload buffer */ + uint32_t payload_sz; + uint32_t padding; + + uint64_t reserved; +}; + +/** + * Header for all fuse-io-uring requests + */ +struct fuse_uring_req_header { + /* struct fuse_in_header / struct fuse_out_header */ + char in_out[FUSE_URING_IN_OUT_HEADER_SZ]; + + /* per op code header */ + char op_in[FUSE_URING_OP_IN_OUT_SZ]; + + struct fuse_uring_ent_in_out ring_ent_in_out; +}; + +/** + * sqe commands to the kernel + */ +enum fuse_uring_cmd { + FUSE_IO_URING_CMD_INVALID = 0, + + /* register the request buffer and fetch a fuse request */ + FUSE_IO_URING_CMD_REGISTER = 1, + + /* commit fuse request result and fetch next request */ + FUSE_IO_URING_CMD_COMMIT_AND_FETCH = 2, +}; + +/** + * In the 80B command area of the SQE. + */ +struct fuse_uring_cmd_req { + uint64_t flags; + + /* entry identifier for commits */ + uint64_t commit_id; + + /* queue the command is for (queue index) */ + uint16_t qid; + uint8_t padding[6]; +}; + #endif /* _LINUX_FUSE_H */ |