82 lines
1.7 KiB
C++
82 lines
1.7 KiB
C++
/*
|
|
* synergy -- mouse and keyboard sharing utility
|
|
* Copyright (C) 2002 Chris Schoeneman
|
|
*
|
|
* This package is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* found in the file COPYING that should have accompanied this file.
|
|
*
|
|
* This package 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.
|
|
*/
|
|
|
|
#include "CArchDaemonUnix.h"
|
|
#include "XArchUnix.h"
|
|
#include <unistd.h>
|
|
#include <sys/types.h>
|
|
#include <sys/stat.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <cstdlib>
|
|
|
|
//
|
|
// CArchDaemonUnix
|
|
//
|
|
|
|
CArchDaemonUnix::CArchDaemonUnix()
|
|
{
|
|
// do nothing
|
|
}
|
|
|
|
CArchDaemonUnix::~CArchDaemonUnix()
|
|
{
|
|
// do nothing
|
|
}
|
|
|
|
int
|
|
CArchDaemonUnix::daemonize(const char* name, DaemonFunc func)
|
|
{
|
|
int dummy;
|
|
|
|
// fork so shell thinks we're done and so we're not a process
|
|
// group leader
|
|
switch (fork()) {
|
|
case -1:
|
|
// failed
|
|
throw XArchDaemonFailed(new XArchEvalUnix(errno));
|
|
|
|
case 0:
|
|
// child
|
|
break;
|
|
|
|
default:
|
|
// parent exits
|
|
exit(0);
|
|
}
|
|
|
|
// become leader of a new session
|
|
setsid();
|
|
|
|
// chdir to root so we don't keep mounted filesystems points busy
|
|
dummy = chdir("/");
|
|
|
|
// mask off permissions for any but owner
|
|
umask(077);
|
|
|
|
// close open files. we only expect stdin, stdout, stderr to be open.
|
|
close(0);
|
|
close(1);
|
|
close(2);
|
|
|
|
// attach file descriptors 0, 1, 2 to /dev/null so inadvertent use
|
|
// of standard I/O safely goes in the bit bucket.
|
|
open("/dev/null", O_RDONLY);
|
|
open("/dev/null", O_RDWR);
|
|
dummy = dup(1);
|
|
|
|
// invoke function
|
|
return func(1, &name);
|
|
}
|