NAME

       io_uring_prep_unlinkat - prepare an unlinkat request

SYNOPSIS

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

       void io_uring_prep_unlinkat(struct io_uring_sqe *sqe,
                                   int dirfd,
                                   const char *path,
                                   int flags);

       void io_uring_prep_unlink(struct io_uring_sqe *sqe,
                                 const char *path,
                                 int flags);

DESCRIPTION

       The  io_uring_prep_unlinkat(3) function prepares an unlinkat request. The submission queue
       entry sqe is setup to use the directory file descriptor pointed to by dirfd  to  start  an
       unlinkat operation on the path identified by path and using the flags given in flags.

       The  io_uring_prep_unlink(3)  function  prepares  an  unlink request. The submission queue
       entry sqe is setup to start an unlinkat operation on the path identified by path  relative
       to the current working directory and using the flags given in flags.

       These functions prepare an async unlinkat(2) or unlink(2) request. See those man pages 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.

NOTES

       As with any request that passes in data in a struct, that data must remain valid until the
       request has been successfully submitted. It need not remain valid until completion. Once a
       request  has  been  submitted,  the in-kernel state is stable. Very early kernels (5.4 and
       earlier) required state to be stable until the completion occurred. Applications can  test
       for  this  behavior  by  inspecting  the  IORING_FEAT_SUBMIT_STABLE  flag passed back from
       io_uring_queue_init_params(3).

SEE ALSO

       io_uring_get_sqe(3), io_uring_submit(3), unlinkat(2), unlink(2)