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UDSRemoteStore: Support the 'root' store parameter

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Useful when we're using a daemon with a chroot store, e.g.

  $ NIX_DAEMON_SOCKET_PATH=/tmp/chroot/nix/var/nix/daemon-socket/socket nix-daemon --store /tmp/chroot

Then the client can now connect with

  $ nix build --store unix:///tmp/chroot/nix/var/nix/daemon-socket/socket?root=/tmp/chroot nixpkgs#hello
This commit is contained in:
Eelco Dolstra 2021-06-18 17:04:11 +02:00
parent e6150de90d
commit 4202a3bc4e
7 changed files with 16 additions and 21 deletions
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4
src/libstore/gc.cc
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@ -775,7 +775,7 @@ void LocalStore::collectGarbage(const GCOptions & options, GCResults & results)
try {
AutoCloseDir dir(opendir(realStoreDir.c_str()));
AutoCloseDir dir(opendir(realStoreDir.get().c_str()));
if (!dir) throw SysError("opening directory '%1%'", realStoreDir);
/* Read the store and immediately delete all paths that
@ -856,7 +856,7 @@ void LocalStore::autoGC(bool sync)
return std::stoll(readFile(*fakeFreeSpaceFile));
struct statvfs st;
if (statvfs(realStoreDir.c_str(), &st))
if (statvfs(realStoreDir.get().c_str(), &st))
throw SysError("getting filesystem info about '%s'", realStoreDir);
return (uint64_t) st.f_bavail * st.f_frsize;