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Diffstat (limited to 'framework/src/suricata/src/util-daemon.c')
| -rw-r--r-- | framework/src/suricata/src/util-daemon.c | 195 |
1 files changed, 0 insertions, 195 deletions
diff --git a/framework/src/suricata/src/util-daemon.c b/framework/src/suricata/src/util-daemon.c deleted file mode 100644 index 2eec7af1..00000000 --- a/framework/src/suricata/src/util-daemon.c +++ /dev/null @@ -1,195 +0,0 @@ -/* Copyright (C) 2007-2010 Open Information Security Foundation - * - * You can copy, redistribute or modify this Program under the terms of - * the GNU General Public License version 2 as published by the Free - * Software Foundation. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -/** - * \file - * - * \author Gerardo Iglesias Galvan <iglesiasg@gmail.com> - * - * Daemonization process - */ - -#include "suricata.h" -#include "suricata-common.h" -#include "runmodes.h" -#include "util-daemon.h" -#include "util-debug.h" -#include "conf.h" - -#ifndef OS_WIN32 - -#include <sys/wait.h> -#include <sys/stat.h> -#include <fcntl.h> - -static volatile sig_atomic_t sigflag = 0; - -/** - * \brief Signal handler used to take the parent process out of stand-by - */ -static void SignalHandlerSigusr1 (int signo) -{ - sigflag = 1; -} - -/** - * \brief Tell the parent process the child is ready - * - * \param pid pid of the parent process to signal - */ -static void TellWaitingParent (pid_t pid) -{ - kill(pid, SIGUSR1); -} - -/** - * \brief Set the parent on stand-by until the child is ready - * - * \param pid pid of the child process to wait - */ -static void WaitForChild (pid_t pid) -{ - int status; - SCLogDebug("Daemon: Parent waiting for child to be ready..."); - /* Wait until child signals is ready */ - while (sigflag == 0) { - if (waitpid(pid, &status, WNOHANG)) { - /* Check if the child is still there, otherwise the parent should exit */ - if (WIFEXITED(status) || WIFSIGNALED(status)) { - SCLogError(SC_ERR_DAEMON, "Child died unexpectedly"); - exit(EXIT_FAILURE); - } - } - /* sigsuspend(); */ - sleep(1); - } -} - -/** - * \brief Close stdin, stdout, stderr.Redirect logging info to syslog - * - */ -static void SetupLogging (void) -{ - /* Redirect stdin, stdout, stderr to /dev/null */ - int fd = open("/dev/null", O_RDWR); - if (fd < 0) - return; - if (dup2(fd, 0) < 0) - return; - if (dup2(fd, 1) < 0) - return; - if (dup2(fd, 2) < 0) - return; - close(fd); -} - -/** - * \brief Daemonize the process - * - */ -void Daemonize (void) -{ - pid_t pid, sid; - - /* Register the signal handler */ - signal(SIGUSR1, SignalHandlerSigusr1); - - /** \todo We should check if wie allow more than 1 instance - to run simultaneously. Maybe change the behaviour - through conf file */ - - /* Creates a new process */ - pid = fork(); - - if (pid < 0) { - /* Fork error */ - SCLogError(SC_ERR_DAEMON, "Error forking the process"); - exit(EXIT_FAILURE); - } else if (pid == 0) { - /* Child continues here */ - char *daemondir; - - umask(027); - - sid = setsid(); - if (sid < 0) { - SCLogError(SC_ERR_DAEMON, "Error creating new session"); - exit(EXIT_FAILURE); - } - - if (ConfGet("daemon-directory", &daemondir) == 1) { - if ((chdir(daemondir)) < 0) { - SCLogError(SC_ERR_DAEMON, "Error changing to working directory"); - exit(EXIT_FAILURE); - } - } -#ifndef OS_WIN32 - else { - if (chdir("/") < 0) { - SCLogError(SC_ERR_DAEMON, "Error changing to working directory '/'"); - } - } -#endif - - SetupLogging(); - - /* Child is ready, tell its parent */ - TellWaitingParent(getppid()); - - /* Daemon is up and running */ - SCLogDebug("Daemon is running"); - return; - } - /* Parent continues here, waiting for child to be ready */ - SCLogDebug("Parent is waiting for child to be ready"); - WaitForChild(pid); - - /* Parent exits */ - SCLogDebug("Child is ready, parent exiting"); - exit(EXIT_SUCCESS); - -} - -#endif /* ifndef OS_WIN32 */ - -/** - * \brief Check for a valid combination daemon/mode - * - * \param daemon daemon on or off - * \param mode selected mode - * - * \retval 1 valid combination - * \retval 0 invalid combination - */ -int CheckValidDaemonModes (int daemon, int mode) -{ - if (daemon) { - switch (mode) { - case RUNMODE_PCAP_FILE: - SCLogError(SC_ERR_INVALID_RUNMODE, "ERROR: pcap offline mode cannot run as daemon"); - return 0; - case RUNMODE_UNITTEST: - SCLogError(SC_ERR_INVALID_RUNMODE, "ERROR: unittests cannot run as daemon"); - return 0; - default: - SCLogDebug("Allowed mode"); - break; - } - } - return 1; -} |