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OpenSSH 4.8 added POSIX-style renames as a protocol extension [1]. The sftp library supports the extension, on both the client and server side, since version 1.13 [2]. For consistency with the other filesystems, it makes sense to use POSIX renames for sftpfs. The old-style rename does not overwrite existing files, which makes it difficult to implement atomic file writes. [1] https://www.openssh.com/txt/release-4.8 [2] pkg/sftp#384
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OpenSSH 4.8 added POSIX-style renames as a protocol extension [1]. The sftp library supports the extension, on both the client and server side, since version 1.13 [2].
For consistency with the other filesystems, it makes sense to use POSIX renames for sftpfs. The old-style rename does not overwrite existing files, which makes it difficult to implement atomic file writes.
[1] https://www.openssh.com/txt/release-4.8
[2] pkg/sftp#384