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/* SPDX-FileCopyrightText: 2009-2023 Greenbone AG
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/**
* @file
* @brief PID-file management.
*/
#include "pidfile.h"
#include <errno.h> /* for errno */
#include <glib.h> /* for g_free, gchar */
#include <glib/gstdio.h> /* for g_unlink, g_fopen */
#include <libgen.h> /* for libgen */
#include <stdio.h> /* for fclose, FILE */
#include <stdlib.h> /* for atoi */
#include <string.h> /* for strerror */
#include <unistd.h> /* for getpid */
#undef G_LOG_DOMAIN
/**
* @brief GLib log domain.
*/
#define G_LOG_DOMAIN "libgvm base"
/**
* @brief Create a PID-file.
*
* A standard PID file will be created for the
* given path.
*
* @param[in] pid_file_path The full path of the pid file. E.g.
* "/tmp/service1.pid"
*
* @return 0 for success, anything else indicates an error.
*/
int
pidfile_create (gchar *pid_file_path)
{
FILE *pidfile;
gchar *copy, *dir;
if (pid_file_path == NULL)
return -1;
copy = g_strdup (pid_file_path);
dir = dirname (copy);
/* Ensure directory exists. */
if (g_mkdir_with_parents (dir, 0755)) /* "rwxr-xr-x" */
{
g_free (copy);
g_warning ("Failed to create PID file directory %s: %s", dir,
strerror (errno));
return 1;
}
g_free (copy);
/* Create file. */
pidfile = g_fopen (pid_file_path, "w");
if (pidfile == NULL)
{
g_critical ("%s: failed to open pidfile %s: %s\n", __func__,
pid_file_path, strerror (errno));
return 1;
}
else
{
g_fprintf (pidfile, "%d\n", getpid ());
fclose (pidfile);
}
return 0;
}
/**
* @brief Remove PID file.
*
* @param[in] pid_file_path The full path of the pid file. E.g.
* "/tmp/service1.pid"
*/
void
pidfile_remove (gchar *pid_file_path)
{
gchar *pidfile_contents;
if (g_file_get_contents (pid_file_path, &pidfile_contents, NULL, NULL))
{
int pid = atoi (pidfile_contents);
if (pid == getpid ())
{
g_unlink (pid_file_path);
}
g_free (pidfile_contents);
}
}
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