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* When NIX_REMOTE=daemon, connect to /nix/var/nix/daemon.socket

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instead of forking a worker.
This commit is contained in:
Eelco Dolstra 2006-12-04 14:21:39 +00:00
parent f5f0cf423f
commit 4740baf3a6
3 changed files with 37 additions and 8 deletions
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36
src/libstore/remote-store.cc
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@ -8,6 +8,7 @@
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <iostream>
@ -27,11 +28,14 @@ RemoteStore::RemoteStore()
else if (remoteMode == "daemon")
/* Connect to a daemon that does the privileged work for
us. */
;
connectToDaemon();
else
throw Error(format("invalid setting for NIX_REMOTE, `%1%'")
% remoteMode);
from.fd = fdSocket;
to.fd = fdSocket;
/* Send the magic greeting, check for the reply. */
try {
@ -52,7 +56,7 @@ void RemoteStore::forkSlave()
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sockets) == -1)
throw SysError("cannot create sockets");
fdSelf = sockets[0];
fdSocket = sockets[0];
AutoCloseFD fdChild = sockets[1];
/* Start the worker. */
@ -80,7 +84,7 @@ void RemoteStore::forkSlave()
if (dup2(fdChild, STDIN_FILENO) == -1)
throw SysError("dupping read side");
close(fdSelf);
close(fdSocket);
close(fdChild);
int fdDebug = open("/tmp/worker-log", O_WRONLY | O_CREAT | O_TRUNC, 0644);
@ -104,16 +108,34 @@ void RemoteStore::forkSlave()
fdChild.close();
from.fd = fdSelf;
to.fd = fdSelf;
}
void RemoteStore::connectToDaemon()
{
fdSocket = socket(PF_UNIX, SOCK_STREAM, 0);
if (fdSocket == -1)
throw SysError("cannot create Unix domain socket");
string socketPath = nixStateDir + DEFAULT_SOCKET_PATH;
struct sockaddr_un addr;
addr.sun_family = AF_UNIX;
if (socketPath.size() >= sizeof(addr.sun_path))
throw Error(format("socket path `%1%' is too long") % socketPath);
strcpy(addr.sun_path, socketPath.c_str());
if (connect(fdSocket, (struct sockaddr *) &addr, sizeof(addr)) == -1)
throw SysError(format("cannot connect to daemon at `%1%'") % socketPath);
}
RemoteStore::~RemoteStore()
{
try {
fdSelf.close();
child.wait(true);
fdSocket.close();
if (child != -1)
child.wait(true);
} catch (Error & e) {
printMsg(lvlError, format("error (ignored): %1%") % e.msg());
}