/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ /*** This file is part of systemd. Copyright 2011 Lennart Poettering systemd is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. systemd is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with systemd; If not, see <http://www.gnu.org/licenses/>. ***/ #include <fcntl.h> #include <unistd.h> #include <sys/socket.h> #include "journald-server.h" #include "journald-console.h" void server_forward_console( Server *s, int priority, const char *identifier, const char *message, struct ucred *ucred) { struct iovec iovec[4]; char header_pid[16]; int n = 0, fd; char *ident_buf = NULL; const char *tty; assert(s); assert(message); if (LOG_PRI(priority) > s->max_level_console) return; /* First: identifier and PID */ if (ucred) { if (!identifier) { get_process_comm(ucred->pid, &ident_buf); identifier = ident_buf; } snprintf(header_pid, sizeof(header_pid), "[%lu]: ", (unsigned long) ucred->pid); char_array_0(header_pid); if (identifier) IOVEC_SET_STRING(iovec[n++], identifier); IOVEC_SET_STRING(iovec[n++], header_pid); } else if (identifier) { IOVEC_SET_STRING(iovec[n++], identifier); IOVEC_SET_STRING(iovec[n++], ": "); } /* Third: message */ IOVEC_SET_STRING(iovec[n++], message); IOVEC_SET_STRING(iovec[n++], "\n"); tty = s->tty_path ? s->tty_path : "/dev/console"; fd = open_terminal(tty, O_WRONLY|O_NOCTTY|O_CLOEXEC); if (fd < 0) { log_debug("Failed to open %s for logging: %s", tty, strerror(errno)); goto finish; } if (writev(fd, iovec, n) < 0) log_debug("Failed to write to %s for logging: %s", tty, strerror(errno)); close_nointr_nofail(fd); finish: free(ident_buf); }