diff options
Diffstat (limited to 'src/nix-worker/nix-worker.cc')
| -rw-r--r-- | src/nix-worker/nix-worker.cc | 21 |
1 files changed, 20 insertions, 1 deletions
diff --git a/src/nix-worker/nix-worker.cc b/src/nix-worker/nix-worker.cc index eaa686667306..7ca54dee99be 100644 --- a/src/nix-worker/nix-worker.cc +++ b/src/nix-worker/nix-worker.cc @@ -753,8 +753,21 @@ static void daemonLoop() throw SysError("accepting connection"); } - printMsg(lvlInfo, format("accepted connection %1%") % remote); + /* Get the identity of the caller, if possible. */ + uid_t clientUid = -1; + pid_t clientPid = -1; + +#if defined(SO_PEERCRED) + ucred cred; + socklen_t credLen = sizeof(cred); + if (getsockopt(remote, SOL_SOCKET, SO_PEERCRED, &cred, &credLen) != -1) { + clientPid = cred.pid; + clientUid = cred.uid; + } +#endif + printMsg(lvlInfo, format("accepted connection from pid %1%, uid %2%") % clientPid % clientUid); + /* Fork a child to handle the connection. */ pid_t child; child = fork(); @@ -774,6 +787,12 @@ static void daemonLoop() /* Restore normal handling of SIGCHLD. */ setSigChldAction(false); + /* For debugging, stuff the pid into argv[1]. */ + if (clientPid != -1 && argvSaved[1]) { + string processName = int2String(clientPid); + strncpy(argvSaved[1], processName.c_str(), strlen(argvSaved[1])); + } + /* Since the daemon can be long-running, the settings may have changed. So force a reload. */ reloadSettings(); |