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void(* fuse_lowlevel_ops::open)(fuse_req_t req, fuse_ino_t ino, struct fuse_file_info *fi)

Open a file

Open flags (with the exception of O_CREAT, O_EXCL, O_NOCTTY and O_TRUNC) are available in fi->flags.

Filesystem may store an arbitrary file handle (pointer, index, etc) in fi->fh, and use this in other all other file operations (read, write, flush, release, fsync).

Filesystem may also implement stateless file I/O and not store anything in fi->fh.

There are also some flags (direct_io, keep_cache) which the filesystem may set in fi, to change the way the file is opened. See fuse_file_info structure in <fuse_common.h> for more details.

Valid replies: fuse_reply_open fuse_reply_err

req request handle
ino the inode number
fi file information

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