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pidfile.h - interact with pidfiles
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Copyright (c) 1995 Martin Schulze <Martin.Schulze@Linux.DE>
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This file is part of the sysklogd package, a kernel and system log daemon.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
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* Reads the specified pidfile and returns the read pid.
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* 0 is returned if either there's no pidfile, it's empty
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* or no pid can be read.
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int read_pid (char *pidfile);
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* Reads the pid using read_pid and looks up the pid in the process
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* table (using /proc) to determine if the process already exists. If
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* so 1 is returned, otherwise 0.
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int check_pid (char *pidfile);
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* Writes the pid to the specified file. If that fails 0 is
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* returned, otherwise the pid.
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int write_pid (char *pidfile);
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* Remove the the specified file. The result from unlink(2)
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int remove_pid (char *pidfile);
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pidfile.h
