arnold@gatech.CSNET (Arnold Robbins) (07/24/85)
Subject: 4.2 BSD <fcntl.h> is incomplete
Index: /usr/include/fcntl.h, /usr/include/sys/file.h
Description:
(This has probably been reported before, and I just haven't
seen it....)
4.2 has the System III/V extended open(2) system call, but
the include file <fcntl.h> is incomplete. In order to fully use
the new open, you have to include <sys/file.h>. The System V
open defines all of O_RDONLY, O_WRONLY, O_RDWR, O_NDELAY, O_APPEND,
O_CREAT, O_TRUNC, and O_EXCL, and 4.2 does have these, but
in <sys/file.h>. The file <fcntl.h> only defines the first 5.
This is an unnecessary portability stumbling block.
Repeat-by:
Try to port a System V program which includes <fcntl.h> and uses
open (file, O_RDWR|O_CREAT, 0666), and watch it die.
Fix:
Add the necessary definitions to <fcntl.h> from <sys/file.h>, or
better yet, change the contents of <fcntl.h> to be
#include <sys/file.h>, or make it a symbolic link to <sys/file.h>.
--
Arnold Robbins
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