Messages in this thread | | | Subject | O_NONBLOCK, read(), select(), NFS, Ext2, etc. | From | Michael Rothwell <> | Date | 11 Jan 2001 21:34:08 -0500 |
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The man pages for open, read and write say that if a file is opened using the O_NONBLOCK flag, then read() and write() will always return immediately and not block the calling process. This does not appear to be true; but perhaps I am doing something wrong. If I open() a file (on 2.2.18) from a floppy or NFS mount (to test in a slow environment) with O_NONBLOCK|O_RDONLY, read() will still block. If I try to select() on the file descriptor, select() always returns 0.
Is there a way to make open(), read() and write() live up to their manpages?
-M
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