vol: avoid query for parent id when deleting disk header
[openafs.git] / src / cf / pio.m4
1 AC_DEFUN([OPENAFS_PIO_CHECKS],[
2 case $AFS_SYSNAME in
3 *hp_ux* | *hpux*)
4    AC_MSG_WARN([Some versions of HP-UX have a buggy positional I/O implementation. Forcing no positional I/O.])
5    ;;
6 *)
7    AC_MSG_CHECKING([for positional I/O])
8    if test "$ac_cv_func_pread" = "yes" && \
9            test "$ac_cv_func_pwrite" = "yes"; then
10       AC_DEFINE(HAVE_PIO, 1, [define if you have pread() and pwrite()])
11       AC_MSG_RESULT(yes)
12    else
13      AC_MSG_RESULT(no)
14    fi
15    AC_MSG_CHECKING([for vectored positional I/O])
16    AS_IF([test "$ac_cv_func_preadv" = "yes" -a \
17                "$ac_cv_func_pwritev" = "yes" -a \
18            "$ac_cv_func_preadv64" = "yes" -a \
19            "$ac_cv_func_pwritev64" = "yes"],
20      [AC_DEFINE(HAVE_PIOV, 1, [define if you have preadv() and pwritev()])
21         AC_MSG_RESULT(yes)],
22      [AC_MSG_RESULT(no)])
23    ;;
24 esac
25 ])