io_uring_prep_ftruncate(3)      liburing Manual     io_uring_prep_ftruncate(3)

NAME
       io_uring_prep_ftruncate - prepare an ftruncate request

SYNOPSIS
       #include <liburing.h>

       void io_uring_prep_ftruncate(struct io_uring_sqe *sqe,
                                    int fd,
                                    loff_t len);

DESCRIPTION
       The io_uring_prep_ftruncate(3) function prepares an ftruncate request.
       The submission queue entry sqe is setup to use the file descriptor fd
       that should get truncated to the length indicated by the len argument.

       Applications must define _GNU_SOURCE to obtain the definition of this
       helper, as loff_t will not be defined without it.


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), ftruncate(2),

liburing-2.6                   January 23, 2024     io_uring_prep_ftruncate(3)