io_uring_prep_ftruncate - prepare an ftruncate request

       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.

       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.

       io_uring_prep_ftruncate - prepare an ftruncate request

       None

io_uring_get_sqe(3), io_uring_submit(3), ftruncate(2),

liburing-2.6                                    January 23, 2024                      io_uring_prep_ftruncate(3)

#include<liburing.h>voidio_uring_prep_ftruncate(structio_uring_sqe*sqe,intfd,loff_tlen);