From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001 From: Joseph Hunkeler Date: Wed, 8 Jul 2015 20:46:52 -0400 Subject: Initial commit --- sys/fio/aread.x | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) create mode 100644 sys/fio/aread.x (limited to 'sys/fio/aread.x') diff --git a/sys/fio/aread.x b/sys/fio/aread.x new file mode 100644 index 00000000..a57c92c9 --- /dev/null +++ b/sys/fio/aread.x @@ -0,0 +1,24 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include + +# AREAD -- Asychronous block read from a binary file. Reads can only +# start at a character offset which is an integral multiple of the file +# block size. + +procedure aread (fd, buffer, maxchars, char_offset) + +int fd # FIO file descriptor +int maxchars # maximum number of chars to be read +char buffer[ARB] # buffer into which data is to be read +long char_offset # one-indexed char offset in file + +int maxbytes +long byte_offset + +begin + maxbytes = maxchars * SZB_CHAR + byte_offset = (char_offset-1) * SZB_CHAR + 1 + + call areadb (fd, buffer, maxbytes, byte_offset) +end -- cgit