| 1 |
/* |
| 2 |
pidfile.h - interact with pidfiles |
| 3 |
Copyright (c) 1995 Martin Schulze <Martin.Schulze@Linux.DE> |
| 4 |
|
| 5 |
This file is part of the sysklogd package, a kernel and system log daemon. |
| 6 |
|
| 7 |
This file is part of GVPE. |
| 8 |
|
| 9 |
GVPE is free software; you can redistribute it and/or modify |
| 10 |
it under the terms of the GNU General Public License as published by |
| 11 |
the Free Software Foundation; either version 2 of the License, or |
| 12 |
(at your option) any later version. |
| 13 |
|
| 14 |
This program is distributed in the hope that it will be useful, |
| 15 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 |
GNU General Public License for more details. |
| 18 |
|
| 19 |
You should have received a copy of the GNU General Public License |
| 20 |
along with gvpe; if not, write to the Free Software |
| 21 |
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA. |
| 22 |
*/ |
| 23 |
|
| 24 |
#if __cplusplus |
| 25 |
extern "C" { |
| 26 |
#endif |
| 27 |
|
| 28 |
/* read_pid |
| 29 |
* |
| 30 |
* Reads the specified pidfile and returns the read pid. |
| 31 |
* 0 is returned if either there's no pidfile, it's empty |
| 32 |
* or no pid can be read. |
| 33 |
*/ |
| 34 |
int read_pid (char *pidfile); |
| 35 |
|
| 36 |
/* check_pid |
| 37 |
* |
| 38 |
* Reads the pid using read_pid and looks up the pid in the process |
| 39 |
* table (using /proc) to determine if the process already exists. If |
| 40 |
* so 1 is returned, otherwise 0. |
| 41 |
*/ |
| 42 |
int check_pid (char *pidfile); |
| 43 |
|
| 44 |
/* write_pid |
| 45 |
* |
| 46 |
* Writes the pid to the specified file. If that fails 0 is |
| 47 |
* returned, otherwise the pid. |
| 48 |
*/ |
| 49 |
int write_pid (char *pidfile); |
| 50 |
|
| 51 |
/* remove_pid |
| 52 |
* |
| 53 |
* Remove the the specified file. The result from unlink(2) |
| 54 |
* is returned |
| 55 |
*/ |
| 56 |
int remove_pid (char *pidfile); |
| 57 |
|
| 58 |
#if __cplusplus |
| 59 |
} |
| 60 |
#endif |
