io_uring_prep_fallocate(3)      liburing Manual     io_uring_prep_fallocate(3)

NAME
       io_uring_prep_fallocate - prepare a fallocate request

SYNOPSIS
       #include <fcntl.h>
       #include <liburing.h>

       void io_uring_prep_fallocate(struct io_uring_sqe *sqe,
                                    int fd,
                                    int mode,
                                    __u64 offset,
                                    __u64 len);

DESCRIPTION
       The io_uring_prep_fallocate(3) function prepares a fallocate request.
       The submission queue entry sqe is setup to use the file descriptor
       pointed to by fd to start a fallocate operation described by mode at
       offset offset and len length in bytes.

       This function prepares an async fallocate(2) request. See that man page
       for details.


RETURN VALUE
       None

ERRORS
       The CQE res field will contain the result of the operation. See the
       related man page for details on possible values. Note that where
       synchronous system calls will return -1 on failure and set errno to the
       actual error value, io_uring never uses errno.  Instead it returns the
       negated errno directly in the CQE res field.

SEE ALSO
       io_uring_get_sqe(3), io_uring_submit(3), fallocate(2)

liburing-2.2                    March 13, 2022      io_uring_prep_fallocate(3)