plucky (3) io_uring_prep_symlinkat.3.gz

NAME

       io_uring_prep_symlinkat - prepare a symlinkat request

SYNOPSIS

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

       void io_uring_prep_symlinkat(struct io_uring_sqe *sqe,
                                    const char *target,
                                    int newdirfd,
                                    const char *linkpath);

       void io_uring_prep_symlink(struct io_uring_sqe *sqe,
                                  const char *target,
                                  const char *linkpath);

DESCRIPTION

       The  io_uring_prep_symlinkat(3)  function prepares a symlinkat request. The submission queue entry sqe is
       setup to symlink the target path pointed to by target to the new destination indicated  by  newdirfd  and
       linkpath.

       The io_uring_prep_symlink(3) function prepares a symlink request. The submission queue entry sqe is setup
       to symlink the target path pointed to by target to the new destination indicated by linkpath relative  to
       the  current working directory. This function prepares an async symlink(2) request. See that man page for
       details.

       These functions prepare an async symlinkat(2) or symlink(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), symlinkat(2), symlink(2)