pidfile.h File Reference

PID-file management. More...

#include <glib.h>

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Functions
int	pidfile_create (gchar *)
	Create a PID-file. More...
void	pidfile_remove (gchar *)
	Remove PID file. More...

Detailed Description

PID-file management.

Definition in file pidfile.h.

Function Documentation

pidfile_create()

int pidfile_create

(

gchar *

pid_file_path

)

Create a PID-file.

A standard PID file will be created for the given path.

Parameters

[in]

pid_file_path

The full path of the pid file. E.g. "/tmp/service1.pid"

Returns

0 for success, anything else indicates an error.

Definition at line 40 of file pidfile.c.

{
  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;
}

pidfile_remove()

void pidfile_remove

(

gchar *

pid_file_path

)

Remove PID file.

Parameters

[in]

pid_file_path

The full path of the pid file. E.g. "/tmp/service1.pid"

Definition at line 87 of file pidfile.c.

{
  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);
    }
}