mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-12-06 19:41:15 +01:00
Nick Mathewson
53 lines
1.1 KiB
C
53 lines
1.1 KiB
C
/* Copyright (c) 2003-2004, Roger Dingledine
|
|
* Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
|
|
* Copyright (c) 2007-2020, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
/**
|
|
* \file pidfile.c
|
|
* \brief Record this process's PID to disk.
|
|
**/
|
|
|
|
#include "orconfig.h"
|
|
#include "lib/process/pidfile.h"
|
|
|
|
#include "lib/log/log.h"
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
|
|
/** Write the current process ID, followed by NL, into <b>filename</b>.
|
|
* Return 0 on success, -1 on failure.
|
|
*/
|
|
int
|
|
write_pidfile(const char *filename)
|
|
{
|
|
FILE *pidfile;
|
|
|
|
if ((pidfile = fopen(filename, "w")) == NULL) {
|
|
log_warn(LD_FS, "Unable to open \"%s\" for writing: %s", filename,
|
|
strerror(errno));
|
|
return -1;
|
|
} else {
|
|
#ifdef _WIN32
|
|
int pid = (int)_getpid();
|
|
#else
|
|
int pid = (int)getpid();
|
|
#endif
|
|
int rv = 0;
|
|
if (fprintf(pidfile, "%d\n", pid) < 0)
|
|
rv = -1;
|
|
if (fclose(pidfile) < 0)
|
|
rv = -1;
|
|
return rv;
|
|
}
|
|
}
|