Article View: comp.bugs.sys5
Article #145AT&T system V fdopen mode checking
From: Hae Hirdler
Date: Fri, 01 Dec 1989 02:56
Date: Fri, 01 Dec 1989 02:56
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The man page on the fdopen states that "the type of the stream must
agree with the mode of the open file." But, when a file is open()'ed
( fd= open (filename, oflag) ), and fdopen()'ed for a stream
( fptr= fdopen (fd, mode) ), it allows this open file to be opened for
any type of a stream regardless of the type of oflag already open()'ed.
For example, fd= open(filename, O_RDONLY); fptr= fdopen(filename, "w")
will return a NON_NULL fptr value instead of NULL.
The semantics of the man page on the fdopen seems to indicate that
this should not be allowed. (return NULL)
Is this a known bug? or what?
- Hae Hirdler
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!wuarchive!texbell!texsun!letni!lawnet!mbf!hae From: hae@mbf.UUCP (Hae Hirdler) Newsgroups: comp.bugs.sys5 Subject: AT&T system V fdopen mode checking Message-ID: <713@mbf.UUCP> Date: 1 Dec 89 02:56:26 GMT Organization: MAI Basic Four, Inc., Tustin, CA Lines: 15