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/*
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
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
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2010
*/
/**
*
* @file thread.c
* @brief thread stuff...
* @author Simone Fedele
*
*/
#include "sesman.h"
#include <errno.h>
#include <signal.h>
#include <pthread.h>
extern struct config_sesman* g_cfg; /* in sesman.c */
static pthread_t g_thread_sighandler;
//static pthread_t g_thread_updater;
/* a variable to pass the socket of s connection to a thread */
int g_thread_sck;
/******************************************************************************/
int DEFAULT_CC
thread_sighandler_start(void)
{
int ret;
sigset_t sigmask;
sigset_t oldmask;
sigset_t waitmask;
/* mask signals to be able to wait for them... */
sigfillset(&sigmask);
pthread_sigmask(SIG_BLOCK, &sigmask, &oldmask);
/* unblock some signals... */
sigemptyset(&waitmask);
/* it is a good idea not to block SIGILL SIGSEGV */
/* SIGFPE -- see sigaction(2) NOTES */
sigaddset(&waitmask, SIGILL);
sigaddset(&waitmask, SIGSEGV);
sigaddset(&waitmask, SIGFPE);
pthread_sigmask(SIG_UNBLOCK, &waitmask, NULL);
log_message(&(g_cfg->log), LOG_LEVEL_INFO,"starting signal handling thread...");
ret = pthread_create(&g_thread_sighandler, NULL, sig_handler_thread, "");
pthread_detach(g_thread_sighandler);
if (ret == 0)
{
log_message(&(g_cfg->log), LOG_LEVEL_INFO, "signal handler thread started successfully");
return 0;
}
/* if something happened while starting a new thread... */
switch (ret)
{
case EINVAL:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid attributes for signal handling thread (creation returned EINVAL)");
break;
case EAGAIN:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "not enough resources to start signal handling thread (creation returned EAGAIN)");
break;
case EPERM:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid permissions for signal handling thread (creation returned EPERM)");
break;
default:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "unknown error starting signal handling thread");
}
return 1;
}
#ifdef JUST_TO_AVOID_COMPILER_ERRORS
/******************************************************************************/
int DEFAULT_CC
thread_session_update_start(void)
{
int ret;
//starts the session update thread
//that checks for idle time, destroys sessions, ecc...
#warning this thread should always request lock_fork before read or write
#warning (so we can Fork() In Peace)
ret = pthread_create(&g_thread_updater, NULL, , "");
pthread_detach(g_thread_updater);
if (ret==0)
{
log_message(&(g_cfg->log), LOG_LEVEL_INFO, "session update thread started successfully");
return 0;
}
/* if something happened while starting a new thread... */
switch (ret)
{
case EINVAL:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid attributes for session update thread (creation returned EINVAL)");
break;
case EAGAIN:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "not enough resources to start session update thread (creation returned EAGAIN)");
break;
case EPERM:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid permissions for session update thread (creation returned EPERM)");
break;
default:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "unknown error starting session update thread");
}
return 1;
}
#endif
/******************************************************************************/
int DEFAULT_CC
thread_scp_start(int skt)
{
int ret;
pthread_t th;
/* blocking the use of thread_skt */
lock_socket_acquire();
g_thread_sck = skt;
/* start a thread that processes a connection */
ret = pthread_create(&th, NULL, scp_process_start, "");
//ret = pthread_create(&th, NULL, scp_process_start, (void*) (&g_thread_sck));
pthread_detach(th);
if (ret == 0)
{
log_message(&(g_cfg->log), LOG_LEVEL_INFO, "scp thread on sck %d started successfully", skt);
return 0;
}
/* if something happened while starting a new thread... */
switch (ret)
{
case EINVAL:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid attributes for scp thread on sck %d (creation returned EINVAL)", skt);
break;
case EAGAIN:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "not enough resources to start scp thread on sck %d (creation returned EAGAIN)", skt);
break;
case EPERM:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "invalid permissions for scp thread on sck %d (creation returned EPERM)", skt);
break;
default:
log_message(&(g_cfg->log), LOG_LEVEL_ERROR, "unknown error starting scp thread on sck %d");
}
return 1;
}
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