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/*
* Copyright (c) 1995 Silicon Graphics, Inc. All Rights Reserved.
* Copyright (c) 2009 Aconex. All Rights Reserved.
*
* 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.
*/
#include "pmcd.h"
#ifdef IS_MINGW
void
StartDaemon(int argc, char **argv)
{
PROCESS_INFORMATION piProcInfo;
STARTUPINFO siStartInfo;
LPTSTR cmdline = NULL;
int i, sz = 3; /* -f\0 */
for (i = 0; i < argc; i++)
sz += strlen(argv[i]) + 1;
if ((cmdline = malloc(sz)) == NULL) {
__pmNotifyErr(LOG_ERR, "StartDaemon: no memory");
exit(1);
}
for (sz = i = 0; i < argc; i++)
sz += sprintf(cmdline, "%s ", argv[i]);
sprintf(cmdline + sz, "-f");
ZeroMemory(&piProcInfo, sizeof(PROCESS_INFORMATION));
ZeroMemory(&siStartInfo, sizeof(STARTUPINFO));
siStartInfo.cb = sizeof(STARTUPINFO);
if (0 == CreateProcess(
NULL, cmdline,
NULL, NULL, /* process and thread attributes */
FALSE, /* inherit handles */
CREATE_NEW_PROCESS_GROUP | CREATE_NO_WINDOW | DETACHED_PROCESS,
NULL, /* environment (from parent) */
NULL, /* current directory */
&siStartInfo, /* STARTUPINFO pointer */
&piProcInfo)) { /* receives PROCESS_INFORMATION */
__pmNotifyErr(LOG_ERR, "StartDaemon: CreateProcess");
/* but keep going */
}
else {
/* parent, let her exit, but avoid ugly "Log finished" messages */
fclose(stderr);
exit(0);
}
}
#else
/* Based on Stevens (Unix Network Programming, p.83) */
void
StartDaemon(int argc, char **argv)
{
pid_t childpid;
(void)argc; (void)argv;
#if defined(HAVE_TERMIO_SIGNALS)
signal(SIGTTOU, SIG_IGN);
signal(SIGTTIN, SIG_IGN);
signal(SIGTSTP, SIG_IGN);
#endif
if ((childpid = fork()) < 0)
__pmNotifyErr(LOG_ERR, "StartDaemon: fork");
/* but keep going */
else if (childpid > 0) {
/* parent, let her exit, but avoid ugly "Log finished" messages */
fclose(stderr);
exit(0);
}
/* not a process group leader, lose controlling tty */
if (setsid() == -1)
__pmNotifyErr(LOG_WARNING, "StartDaemon: setsid");
/* but keep going */
close(0);
/* don't close other fd's -- we know that only good ones are open! */
/* don't chdir("/") -- we still need to open pmcd.log */
}
#endif
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