/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause) */ /* This file defines the kernel interface of FUSE Copyright (C) 2001-2008 Miklos Szeredi <[email protected]> This program can be distributed under the terms of the GNU GPL. See the file COPYING. This -- and only this -- header file may also be distributed under the terms of the BSD Licence as follows: Copyright (C) 2001-2007 Miklos Szeredi. All rights reserved. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /* * This file defines the kernel interface of FUSE * * 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 * - add lock_owner field to fuse_setattr_in, fuse_read_in and fuse_write_in * - add blksize field to fuse_attr * - add file flags field to fuse_read_in and fuse_write_in * - Add ATIME_NOW and MTIME_NOW flags to fuse_setattr_in * * 7.10 * - add nonseekable open flag * * 7.11 * - add IOCTL message * - add unsolicited notification support * - add POLL message and NOTIFY_POLL notification * * 7.12 * - add umask flag to input argument of create, mknod and mkdir * - add notification messages for invalidation of inodes and * directory entries * * 7.13 * - make max number of background requests and congestion threshold * tunables * * 7.14 * - add splice support to fuse device * * 7.15 * - add store notify * - add retrieve notify * * 7.16 * - add BATCH_FORGET request * - FUSE_IOCTL_UNRESTRICTED shall now return with array of 'struct * fuse_ioctl_iovec' instead of ambiguous 'struct iovec' * - add FUSE_IOCTL_32BIT flag * * 7.17 * - add FUSE_FLOCK_LOCKS and FUSE_RELEASE_FLOCK_UNLOCK * * 7.18 * - add FUSE_IOCTL_DIR flag * - add FUSE_NOTIFY_DELETE * * 7.19 * - add FUSE_FALLOCATE * * 7.20 * - add FUSE_AUTO_INVAL_DATA * * 7.21 * - add FUSE_READDIRPLUS * - send the requested events in POLL request * * 7.22 * - add FUSE_ASYNC_DIO * * 7.23 * - add FUSE_WRITEBACK_CACHE * - add time_gran to fuse_init_out * - add reserved space to fuse_init_out * - add FATTR_CTIME * - add ctime and ctimensec to fuse_setattr_in * - add FUSE_RENAME2 request * - add FUSE_NO_OPEN_SUPPORT flag * * 7.24 * - add FUSE_LSEEK for SEEK_HOLE and SEEK_DATA support * * 7.25 * - add FUSE_PARALLEL_DIROPS * * 7.26 * - add FUSE_HANDLE_KILLPRIV * - add FUSE_POSIX_ACL * * 7.27 * - add FUSE_ABORT_ERROR * * 7.28 * - add FUSE_COPY_FILE_RANGE * - add FOPEN_CACHE_DIR * - add FUSE_MAX_PAGES, add max_pages to init_out * - add FUSE_CACHE_SYMLINKS * * 7.29 * - add FUSE_NO_OPENDIR_SUPPORT flag * * 7.30 * - add FUSE_EXPLICIT_INVAL_DATA * - add FUSE_IOCTL_COMPAT_X32 * * 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 * * 7.32 * - add flags to fuse_attr, add FUSE_ATTR_SUBMOUNT, add FUSE_SUBMOUNTS * * 7.33 * - add FUSE_HANDLE_KILLPRIV_V2, FUSE_WRITE_KILL_SUIDGID, FATTR_KILL_SUIDGID * - add FUSE_OPEN_KILL_SUIDGID * - extend fuse_setxattr_in, add FUSE_SETXATTR_EXT * - add FUSE_SETXATTR_ACL_KILL_SGID * * 7.34 * - add FUSE_SYNCFS * * 7.35 * - add FOPEN_NOFLUSH * * 7.36 * - extend fuse_init_in with reserved fields, add FUSE_INIT_EXT init flag * - add flags2 to fuse_init_in and fuse_init_out * - add FUSE_SECURITY_CTX init flag * - add security context to create, mkdir, symlink, and mknod requests * - add FUSE_HAS_INODE_DAX, FUSE_ATTR_DAX * * 7.37 * - add FUSE_TMPFILE * * 7.38 * - add FUSE_EXPIRE_ONLY flag to fuse_notify_inval_entry * - add FOPEN_PARALLEL_DIRECT_WRITES * - add total_extlen to fuse_in_header * - add FUSE_MAX_NR_SECCTX * - add extension header * - add FUSE_EXT_GROUPS * - add FUSE_CREATE_SUPP_GROUP * - add FUSE_HAS_EXPIRE_ONLY * * 7.39 * - add FUSE_DIRECT_IO_ALLOW_MMAP * - add FUSE_STATX and related structures * * 7.40 * - add max_stack_depth to fuse_init_out, add FUSE_PASSTHROUGH init flag * - 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 */ #ifndef _LINUX_FUSE_H #define _LINUX_FUSE_H #ifdef __KERNEL__ #include <linux/types.h> #else #include <stdint.h> #endif /* * Version negotiation: * * Both the kernel and userspace send the version they support in the * INIT request and reply respectively. * * If the major versions match then both shall use the smallest * of the two minor versions for communication. * * If the kernel supports a larger major version, then userspace shall * reply with the major version it supports, ignore the rest of the * INIT message and expect a new INIT message from the kernel with a * matching major version. * * If the library supports a larger major version, then it shall fall * back to the major protocol version sent by the kernel for * communication and reply with that major version (and an arbitrary * supported minor version). */ /** Version number of this interface */ #define FUSE_KERNEL_VERSION … /** Minor version number of this interface */ #define FUSE_KERNEL_MINOR_VERSION … /** The node ID of the root inode */ #define FUSE_ROOT_ID … /* Make sure all structures are padded to 64bit boundary, so 32bit userspace works under 64bit kernels */ struct fuse_attr { … }; /* * The following structures are bit-for-bit compatible with the statx(2) ABI in * Linux. */ struct fuse_sx_time { … }; struct fuse_statx { … }; struct fuse_kstatfs { … }; struct fuse_file_lock { … }; /** * Bitmasks for fuse_setattr_in.valid */ #define FATTR_MODE … #define FATTR_UID … #define FATTR_GID … #define FATTR_SIZE … #define FATTR_ATIME … #define FATTR_MTIME … #define FATTR_FH … #define FATTR_ATIME_NOW … #define FATTR_MTIME_NOW … #define FATTR_LOCKOWNER … #define FATTR_CTIME … #define FATTR_KILL_SUIDGID … /** * Flags returned by the OPEN request * * FOPEN_DIRECT_IO: bypass page cache for this open file * FOPEN_KEEP_CACHE: don't invalidate the data cache on open * FOPEN_NONSEEKABLE: the file is not seekable * FOPEN_CACHE_DIR: allow caching this directory * FOPEN_STREAM: the file is stream-like (no file position at all) * FOPEN_NOFLUSH: don't flush data cache on close (unless FUSE_WRITEBACK_CACHE) * FOPEN_PARALLEL_DIRECT_WRITES: Allow concurrent direct writes on the same inode * FOPEN_PASSTHROUGH: passthrough read/write io for this open file */ #define FOPEN_DIRECT_IO … #define FOPEN_KEEP_CACHE … #define FOPEN_NONSEEKABLE … #define FOPEN_CACHE_DIR … #define FOPEN_STREAM … #define FOPEN_NOFLUSH … #define FOPEN_PARALLEL_DIRECT_WRITES … #define FOPEN_PASSTHROUGH … /** * INIT request/reply flags * * FUSE_ASYNC_READ: asynchronous read requests * FUSE_POSIX_LOCKS: remote locking for POSIX file locks * FUSE_FILE_OPS: kernel sends file handle for fstat, etc... (not yet supported) * FUSE_ATOMIC_O_TRUNC: handles the O_TRUNC open flag in the filesystem * FUSE_EXPORT_SUPPORT: filesystem handles lookups of "." and ".." * FUSE_BIG_WRITES: filesystem can handle write size larger than 4kB * FUSE_DONT_MASK: don't apply umask to file mode on create operations * FUSE_SPLICE_WRITE: kernel supports splice write on the device * FUSE_SPLICE_MOVE: kernel supports splice move on the device * FUSE_SPLICE_READ: kernel supports splice read on the device * FUSE_FLOCK_LOCKS: remote locking for BSD style file locks * FUSE_HAS_IOCTL_DIR: kernel supports ioctl on directories * FUSE_AUTO_INVAL_DATA: automatically invalidate cached pages * FUSE_DO_READDIRPLUS: do READDIRPLUS (READDIR+LOOKUP in one) * FUSE_READDIRPLUS_AUTO: adaptive readdirplus * FUSE_ASYNC_DIO: asynchronous direct I/O submission * FUSE_WRITEBACK_CACHE: use writeback cache for buffered writes * FUSE_NO_OPEN_SUPPORT: kernel supports zero-message opens * FUSE_PARALLEL_DIROPS: allow parallel lookups and readdir * FUSE_HANDLE_KILLPRIV: fs handles killing suid/sgid/cap on write/chown/trunc * FUSE_POSIX_ACL: filesystem supports posix acls * FUSE_ABORT_ERROR: reading the device after abort returns ECONNABORTED * FUSE_MAX_PAGES: init_out.max_pages contains the max number of req pages * 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: init_out.map_alignment contains log2(byte alignment) for * foffset and moffset fields in struct * fuse_setupmapping_out and fuse_removemapping_one. * FUSE_SUBMOUNTS: kernel supports auto-mounting directory submounts * FUSE_HANDLE_KILLPRIV_V2: fs kills suid/sgid/cap on write/chown/trunc. * Upon write/truncate suid/sgid is only killed if caller * does not have CAP_FSETID. Additionally upon * write/truncate sgid is killed only if file has group * execute permission. (Same as Linux VFS behavior). * FUSE_SETXATTR_EXT: Server supports extended struct fuse_setxattr_in * FUSE_INIT_EXT: extended fuse_init_in request * FUSE_INIT_RESERVED: reserved, do not use * FUSE_SECURITY_CTX: add security context to create, mkdir, symlink, and * mknod * FUSE_HAS_INODE_DAX: use per inode DAX * FUSE_CREATE_SUPP_GROUP: add supplementary group info to create, mkdir, * symlink and mknod (single group that matches parent) * FUSE_HAS_EXPIRE_ONLY: kernel supports expiry-only entry invalidation * FUSE_DIRECT_IO_ALLOW_MMAP: allow shared mmap in FOPEN_DIRECT_IO mode. * 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 */ #define FUSE_ASYNC_READ … #define FUSE_POSIX_LOCKS … #define FUSE_FILE_OPS … #define FUSE_ATOMIC_O_TRUNC … #define FUSE_EXPORT_SUPPORT … #define FUSE_BIG_WRITES … #define FUSE_DONT_MASK … #define FUSE_SPLICE_WRITE … #define FUSE_SPLICE_MOVE … #define FUSE_SPLICE_READ … #define FUSE_FLOCK_LOCKS … #define FUSE_HAS_IOCTL_DIR … #define FUSE_AUTO_INVAL_DATA … #define FUSE_DO_READDIRPLUS … #define FUSE_READDIRPLUS_AUTO … #define FUSE_ASYNC_DIO … #define FUSE_WRITEBACK_CACHE … #define FUSE_NO_OPEN_SUPPORT … #define FUSE_PARALLEL_DIROPS … #define FUSE_HANDLE_KILLPRIV … #define FUSE_POSIX_ACL … #define FUSE_ABORT_ERROR … #define FUSE_MAX_PAGES … #define FUSE_CACHE_SYMLINKS … #define FUSE_NO_OPENDIR_SUPPORT … #define FUSE_EXPLICIT_INVAL_DATA … #define FUSE_MAP_ALIGNMENT … #define FUSE_SUBMOUNTS … #define FUSE_HANDLE_KILLPRIV_V2 … #define FUSE_SETXATTR_EXT … #define FUSE_INIT_EXT … #define FUSE_INIT_RESERVED … /* bits 32..63 get shifted down 32 bits into the flags2 field */ #define FUSE_SECURITY_CTX … #define FUSE_HAS_INODE_DAX … #define FUSE_CREATE_SUPP_GROUP … #define FUSE_HAS_EXPIRE_ONLY … #define FUSE_DIRECT_IO_ALLOW_MMAP … #define FUSE_PASSTHROUGH … #define FUSE_NO_EXPORT_SUPPORT … #define FUSE_HAS_RESEND … /* Obsolete alias for FUSE_DIRECT_IO_ALLOW_MMAP */ #define FUSE_DIRECT_IO_RELAX … #define FUSE_ALLOW_IDMAP … /** * CUSE INIT request/reply flags * * CUSE_UNRESTRICTED_IOCTL: use unrestricted ioctl */ #define CUSE_UNRESTRICTED_IOCTL … /** * Release flags */ #define FUSE_RELEASE_FLUSH … #define FUSE_RELEASE_FLOCK_UNLOCK … /** * Getattr flags */ #define FUSE_GETATTR_FH … /** * Lock flags */ #define FUSE_LK_FLOCK … /** * WRITE flags * * FUSE_WRITE_CACHE: delayed write from page cache, file handle is guessed * FUSE_WRITE_LOCKOWNER: lock_owner field is valid * FUSE_WRITE_KILL_SUIDGID: kill suid and sgid bits */ #define FUSE_WRITE_CACHE … #define FUSE_WRITE_LOCKOWNER … #define FUSE_WRITE_KILL_SUIDGID … /* Obsolete alias; this flag implies killing suid/sgid only. */ #define FUSE_WRITE_KILL_PRIV … /** * Read flags */ #define FUSE_READ_LOCKOWNER … /** * Ioctl flags * * FUSE_IOCTL_COMPAT: 32bit compat ioctl on 64bit machine * FUSE_IOCTL_UNRESTRICTED: not restricted to well-formed ioctls, retry allowed * FUSE_IOCTL_RETRY: retry with new iovecs * FUSE_IOCTL_32BIT: 32bit ioctl * FUSE_IOCTL_DIR: is a directory * FUSE_IOCTL_COMPAT_X32: x32 compat ioctl on 64bit machine (64bit time_t) * * FUSE_IOCTL_MAX_IOV: maximum of in_iovecs + out_iovecs */ #define FUSE_IOCTL_COMPAT … #define FUSE_IOCTL_UNRESTRICTED … #define FUSE_IOCTL_RETRY … #define FUSE_IOCTL_32BIT … #define FUSE_IOCTL_DIR … #define FUSE_IOCTL_COMPAT_X32 … #define FUSE_IOCTL_MAX_IOV … /** * Poll flags * * FUSE_POLL_SCHEDULE_NOTIFY: request poll notify */ #define FUSE_POLL_SCHEDULE_NOTIFY … /** * Fsync flags * * FUSE_FSYNC_FDATASYNC: Sync data only, not metadata */ #define FUSE_FSYNC_FDATASYNC … /** * fuse_attr flags * * FUSE_ATTR_SUBMOUNT: Object is a submount root * FUSE_ATTR_DAX: Enable DAX for this file in per inode DAX mode */ #define FUSE_ATTR_SUBMOUNT … #define FUSE_ATTR_DAX … /** * Open flags * FUSE_OPEN_KILL_SUIDGID: Kill suid and sgid if executable */ #define FUSE_OPEN_KILL_SUIDGID … /** * setxattr flags * FUSE_SETXATTR_ACL_KILL_SGID: Clear SGID when system.posix_acl_access is set */ #define FUSE_SETXATTR_ACL_KILL_SGID … /** * notify_inval_entry flags * FUSE_EXPIRE_ONLY */ #define FUSE_EXPIRE_ONLY … /** * extension type * FUSE_MAX_NR_SECCTX: maximum value of &fuse_secctx_header.nr_secctx * FUSE_EXT_GROUPS: &fuse_supp_groups extension */ enum fuse_ext_type { … }; enum fuse_opcode { … }; enum fuse_notify_code { … }; /* The read buffer is required to be at least 8k, but may be much larger */ #define FUSE_MIN_READ_BUFFER … #define FUSE_COMPAT_ENTRY_OUT_SIZE … struct fuse_entry_out { … }; struct fuse_forget_in { … }; struct fuse_forget_one { … }; struct fuse_batch_forget_in { … }; struct fuse_getattr_in { … }; #define FUSE_COMPAT_ATTR_OUT_SIZE … struct fuse_attr_out { … }; struct fuse_statx_in { … }; struct fuse_statx_out { … }; #define FUSE_COMPAT_MKNOD_IN_SIZE … struct fuse_mknod_in { … }; struct fuse_mkdir_in { … }; struct fuse_rename_in { … }; struct fuse_rename2_in { … }; struct fuse_link_in { … }; struct fuse_setattr_in { … }; struct fuse_open_in { … }; struct fuse_create_in { … }; struct fuse_open_out { … }; struct fuse_release_in { … }; struct fuse_flush_in { … }; struct fuse_read_in { … }; #define FUSE_COMPAT_WRITE_IN_SIZE … struct fuse_write_in { … }; struct fuse_write_out { … }; #define FUSE_COMPAT_STATFS_SIZE … struct fuse_statfs_out { … }; struct fuse_fsync_in { … }; #define FUSE_COMPAT_SETXATTR_IN_SIZE … struct fuse_setxattr_in { … }; struct fuse_getxattr_in { … }; struct fuse_getxattr_out { … }; struct fuse_lk_in { … }; struct fuse_lk_out { … }; struct fuse_access_in { … }; struct fuse_init_in { … }; #define FUSE_COMPAT_INIT_OUT_SIZE … #define FUSE_COMPAT_22_INIT_OUT_SIZE … struct fuse_init_out { … }; #define CUSE_INIT_INFO_MAX … struct cuse_init_in { … }; struct cuse_init_out { … }; struct fuse_interrupt_in { … }; struct fuse_bmap_in { … }; struct fuse_bmap_out { … }; struct fuse_ioctl_in { … }; struct fuse_ioctl_iovec { … }; struct fuse_ioctl_out { … }; struct fuse_poll_in { … }; struct fuse_poll_out { … }; struct fuse_notify_poll_wakeup_out { … }; struct fuse_fallocate_in { … }; /** * FUSE request unique ID flag * * Indicates whether this is a resend request. The receiver should handle this * request accordingly. */ #define FUSE_UNIQUE_RESEND … /** * 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 … struct fuse_in_header { … }; struct fuse_out_header { … }; struct fuse_dirent { … }; /* Align variable length records to 64bit boundary */ #define FUSE_REC_ALIGN(x) … #define FUSE_NAME_OFFSET … #define FUSE_DIRENT_ALIGN(x) … #define FUSE_DIRENT_SIZE(d) … struct fuse_direntplus { … }; #define FUSE_NAME_OFFSET_DIRENTPLUS … #define FUSE_DIRENTPLUS_SIZE(d) … struct fuse_notify_inval_inode_out { … }; struct fuse_notify_inval_entry_out { … }; struct fuse_notify_delete_out { … }; struct fuse_notify_store_out { … }; struct fuse_notify_retrieve_out { … }; /* Matches the size of fuse_write_in */ struct fuse_notify_retrieve_in { … }; struct fuse_backing_map { … }; /* Device ioctls: */ #define FUSE_DEV_IOC_MAGIC … #define FUSE_DEV_IOC_CLONE … #define FUSE_DEV_IOC_BACKING_OPEN … #define FUSE_DEV_IOC_BACKING_CLOSE … struct fuse_lseek_in { … }; struct fuse_lseek_out { … }; struct fuse_copy_file_range_in { … }; #define FUSE_SETUPMAPPING_FLAG_WRITE … #define FUSE_SETUPMAPPING_FLAG_READ … struct fuse_setupmapping_in { … }; struct fuse_removemapping_in { … }; struct fuse_removemapping_one { … }; #define FUSE_REMOVEMAPPING_MAX_ENTRY … struct fuse_syncfs_in { … }; /* * For each security context, send fuse_secctx with size of security context * fuse_secctx will be followed by security context name and this in turn * will be followed by actual context label. * fuse_secctx, name, context */ struct fuse_secctx { … }; /* * Contains the information about how many fuse_secctx structures are being * sent and what's the total size of all security contexts (including * size of fuse_secctx_header). * */ struct fuse_secctx_header { … }; /** * struct fuse_ext_header - extension header * @size: total size of this extension including this header * @type: type of extension * * This is made compatible with fuse_secctx_header by using type values > * FUSE_MAX_NR_SECCTX */ struct fuse_ext_header { … }; /** * struct fuse_supp_groups - Supplementary group extension * @nr_groups: number of supplementary groups * @groups: flexible array of group IDs */ struct fuse_supp_groups { … }; #endif /* _LINUX_FUSE_H */
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