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https://github.com/privatevoid-net/nix-super.git
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04170d06bf
There is a long-standing race condition when copying a closure to a remote machine, particularly affecting build-remote.pl: the client first asks the remote machine which paths it already has, then copies over the missing paths. If the garbage collector kicks in on the remote machine between the first and second step, the already-present paths may be deleted. The missing paths may then refer to deleted paths, causing nix-copy-closure to fail. The client now performs both steps using a single remote Nix call (using ‘nix-store --serve’), locking all paths in the closure while querying. I changed the --serve protocol a bit (getting rid of QueryCommand), so this breaks the SSH substituter from older versions. But it was marked experimental anyway. Fixes #141.
20 lines
365 B
C++
20 lines
365 B
C++
#pragma once
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namespace nix {
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#define SERVE_MAGIC_1 0x390c9deb
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#define SERVE_MAGIC_2 0x5452eecb
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#define SERVE_PROTOCOL_VERSION 0x200
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#define GET_PROTOCOL_MAJOR(x) ((x) & 0xff00)
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#define GET_PROTOCOL_MINOR(x) ((x) & 0x00ff)
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typedef enum {
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cmdQueryValidPaths = 1,
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cmdQueryPathInfos = 2,
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cmdDumpStorePath = 3,
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cmdImportPaths = 4,
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} ServeCommand;
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}
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