nixos/nix
1
1
Fork 0
mirror of https://github.com/NixOS/nix.git synced 2025-11-13 22:12:43 +01:00
Code Activity

Connect/bind Unix domain sockets in a child process

Browse source 
In the child process, we can do a chdir() and avoid the problem of the
path not fitting into sockaddr_un.
This commit is contained in:
Eelco Dolstra 2021-08-24 13:52:55 +02:00
parent 08cc572f89
commit 43d4d75e22
3 changed files with 69 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

11
src/libstore/uds-remote-store.cc
View file

@ -65,16 +65,7 @@ ref<RemoteStore::Connection> UDSRemoteStore::openConnection()
throw SysError("cannot create Unix domain socket");
closeOnExec(conn->fd.get());
string socketPath = path ? *path : settings.nixDaemonSocketFile;
struct sockaddr_un addr;
addr.sun_family = AF_UNIX;
if (socketPath.size() + 1 >= sizeof(addr.sun_path))
throw Error("socket path '%1%' is too long", socketPath);
strcpy(addr.sun_path, socketPath.c_str());
if (::connect(conn->fd.get(), (struct sockaddr *) &addr, sizeof(addr)) == -1)
throw SysError("cannot connect to daemon at '%1%'", socketPath);
nix::connect(conn->fd.get(), path ? *path : settings.nixDaemonSocketFile);
conn->from.fd = conn->fd.get();
conn->to.fd = conn->fd.get();