diff options
Diffstat (limited to 'src/nix-daemon')
| -rw-r--r-- | src/nix-daemon/nix-daemon.cc | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/src/nix-daemon/nix-daemon.cc b/src/nix-daemon/nix-daemon.cc index e68d1b1be..bcb86cbce 100644 --- a/src/nix-daemon/nix-daemon.cc +++ b/src/nix-daemon/nix-daemon.cc @@ -36,7 +36,7 @@ using namespace nix::daemon; #define SPLICE_F_MOVE 0 static ssize_t splice(int fd_in, void *off_in, int fd_out, void *off_out, size_t len, unsigned int flags) { - /* We ignore most parameters, we just have them for conformance with the linux syscall */ + // We ignore most parameters, we just have them for conformance with the linux syscall std::vector<char> buf(8192); auto read_count = read(fd_in, buf.data(), buf.size()); if (read_count == -1) @@ -57,7 +57,7 @@ static void sigChldHandler(int sigNo) { // Ensure we don't modify errno of whatever we've interrupted auto saved_errno = errno; - /* Reap all dead children. */ + // Reap all dead children. while (waitpid(-1, 0, WNOHANG) > 0) ; errno = saved_errno; } @@ -106,7 +106,7 @@ struct PeerInfo }; -/* Get the identity of the caller, if possible. */ +// Get the identity of the caller, if possible. static PeerInfo getPeerInfo(int remote) { PeerInfo peer = { false, 0, false, 0, false, 0 }; @@ -154,13 +154,12 @@ static void daemonLoop(char * * argv) if (chdir("/") == -1) throw SysError("cannot change current directory"); - /* Get rid of children automatically; don't let them become - zombies. */ + // Get rid of children automatically; don't let them become zombies. setSigChldAction(true); AutoCloseFD fdSocket; - /* Handle socket-based activation by systemd. */ + // Handle socket-based activation by systemd. auto listenFds = getEnv("LISTEN_FDS"); if (listenFds) { if (getEnv("LISTEN_PID") != std::to_string(getpid()) || listenFds != "1") @@ -169,17 +168,17 @@ static void daemonLoop(char * * argv) closeOnExec(fdSocket.get()); } - /* Otherwise, create and bind to a Unix domain socket. */ + // Otherwise, create and bind to a Unix domain socket. else { createDirs(dirOf(settings.nixDaemonSocketFile)); fdSocket = createUnixDomainSocket(settings.nixDaemonSocketFile, 0666); } - /* Loop accepting connections. */ + // Loop accepting connections. while (1) { try { - /* Accept a connection. */ + // Accept a connection. struct sockaddr_un remoteAddr; socklen_t remoteAddrLen = sizeof(remoteAddr); @@ -209,13 +208,13 @@ static void daemonLoop(char * * argv) trusted = Trusted; if ((!trusted && !matchUser(user, group, allowedUsers)) || group == settings.buildUsersGroup) - throw Error(format("user '%1%' is not allowed to connect to the Nix daemon") % user); + throw Error("user '%1%' is not allowed to connect to the Nix daemon", user); printInfo(format((string) "accepted connection from pid %1%, user %2%" + (trusted ? " (trusted)" : "")) % (peer.pidKnown ? std::to_string(peer.pid) : "<unknown>") % (peer.uidKnown ? user : "<unknown>")); - /* Fork a child to handle the connection. */ + // Fork a child to handle the connection. ProcessOptions options; options.errorPrefix = "unexpected Nix daemon error: "; options.dieWithParent = false; @@ -224,20 +223,20 @@ static void daemonLoop(char * * argv) startProcess([&]() { fdSocket = -1; - /* Background the daemon. */ + // Background the daemon. if (setsid() == -1) - throw SysError(format("creating a new session")); + throw SysError("creating a new session"); - /* Restore normal handling of SIGCHLD. */ + // Restore normal handling of SIGCHLD. setSigChldAction(false); - /* For debugging, stuff the pid into argv[1]. */ + // For debugging, stuff the pid into argv[1]. if (peer.pidKnown && argv[1]) { string processName = std::to_string(peer.pid); strncpy(argv[1], processName.c_str(), strlen(argv[1])); } - /* Handle the connection. */ + // Handle the connection. FdSource from(remote.get()); FdSink to(remote.get()); processConnection(openUncachedStore(), from, to, trusted, NotRecursive, user, peer.uid); @@ -247,8 +246,11 @@ static void daemonLoop(char * * argv) } catch (Interrupted & e) { return; - } catch (Error & e) { - printError(format("error processing connection: %1%") % e.msg()); + } catch (Error & error) { + ErrorInfo ei = error.info(); + ei.hint = std::optional(hintfmt("error processing connection: %1%", + (error.info().hint.has_value() ? error.info().hint->str() : ""))); + logError(ei); } } } @@ -261,7 +263,7 @@ static int _main(int argc, char * * argv) parseCmdLine(argc, argv, [&](Strings::iterator & arg, const Strings::iterator & end) { if (*arg == "--daemon") - ; /* ignored for backwards compatibility */ + ; // ignored for backwards compatibility else if (*arg == "--help") showManPage("nix-daemon"); else if (*arg == "--version") @@ -276,7 +278,7 @@ static int _main(int argc, char * * argv) if (stdio) { if (getStoreType() == tDaemon) { - /* Forward on this connection to the real daemon */ + // Forward on this connection to the real daemon auto socketPath = settings.nixDaemonSocketFile; auto s = socket(PF_UNIX, SOCK_STREAM, 0); if (s == -1) @@ -284,17 +286,17 @@ static int _main(int argc, char * * argv) auto socketDir = dirOf(socketPath); if (chdir(socketDir.c_str()) == -1) - throw SysError(format("changing to socket directory '%1%'") % socketDir); + throw SysError("changing to socket directory '%1%'", socketDir); auto socketName = std::string(baseNameOf(socketPath)); auto addr = sockaddr_un{}; addr.sun_family = AF_UNIX; if (socketName.size() + 1 >= sizeof(addr.sun_path)) - throw Error(format("socket name %1% is too long") % socketName); + throw Error("socket name %1% is too long", socketName); strcpy(addr.sun_path, socketName.c_str()); if (connect(s, (struct sockaddr *) &addr, sizeof(addr)) == -1) - throw SysError(format("cannot connect to daemon at %1%") % socketPath); + throw SysError("cannot connect to daemon at %1%", socketPath); auto nfds = (s > STDIN_FILENO ? s : STDIN_FILENO) + 1; while (true) { |