[BUG] open(): Opening with flags O_RDONLY | O_APPEND positions the file pointer at the end of the file

[Christopher Faylor]

On Wed, Jul 10, 2002 at 03:39:43PM +0200, Pavel Tsekov wrote:
>Hello, there :)
>
>Attached is a testcase which displays the problem. On Linux it will
>properly return 13, while on cygwin it returns 0.
>
>I found this while trying to understand why MC doesn't extract
>properly files from say .zip files.
>
>I don't know exactly why they call O_RDONLY combined with O_APPEND but
>I will mail the mc-devel list ASAP.
>
>Still according to the Linux man page and SUSv2, O_APPEND should be
>taken into account only when writing to the file.
>
>Having in mind that fhandler_base::write() calls SetFilePointer
>before each write, I wonder why fhandler_disk_base::open calls
>SetFilePointer when it detects O_APPEND ?

Good question.

We've got your assignment.  Do you want to send a patch for this behavior
to cygwin-patches?

cgf

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