io_uring_prep_fallocate(3) — Linux manual page


io_uring_prep_fallocate(3)   liburing Manual  io_uring_prep_fallocate(3)

NAME         top

       io_uring_prep_fallocate - prepare a fallocate request

SYNOPSIS         top

       #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         top

       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         top


ERRORS         top

       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

SEE ALSO         top

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

COLOPHON         top

       This page is part of the liburing (A library for io_uring)
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       was obtained from the project's upstream Git repository
       ⟨⟩ on 2023-12-22.  (At that
       time, the date of the most recent commit that was found in the
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liburing-2.2                 March 13, 2022   io_uring_prep_fallocate(3)

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