[Bug 3431] scp truncates file when copying file over itself

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3431

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |3418
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Damien Miller <djm at mindrot.org> ---
This fix has been committed and will be in OpenSSH 9.1, due in a few
months.

commit 56a0697fe079ff3e1ba30a2d5c26b5e45f7b71f8 (HEAD -> master,
origin/master, origin/HEAD)
Author: djm at openbsd.org <djm at openbsd.org>
Date:   Fri May 13 06:31:50 2022 +0000

    upstream: arrange for scp, when in sftp mode, to not ftruncate(3)
files

    early

    previous behavious of unconditionally truncating the destination
file
    would cause "scp ~/foo localhost:" and "scp localhost:foo ~/" to
    delete all the contents of their destination.

    spotted by solene@ sthen@, also bz3431; ok dtucker@

    OpenBSD-Commit-ID: ca39fdd39e0ec1466b9666f15cbcfddea6aaa179


Referenced Bugs:

https://bugzilla.mindrot.org/show_bug.cgi?id=3418
[Bug 3418] tracking bug for openssh-9.1
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