/usr/include/nih/signal.h is in libnih-dev 1.0.3-4ubuntu9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright © 2009 Scott James Remnant <scott@netsplit.com>.
* Copyright © 2009 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef NIH_SIGNAL_H
#define NIH_SIGNAL_H
#include <nih/macros.h>
#include <nih/list.h>
#include <signal.h>
/**
* NihSignalHandler:
* @data: pointer given with handler,
* @signal: signal watch structure.
*
* A signal handler is called whenever the signal has been raised, it
* is passed the NihSignal structure rather than the actual signal so that
* it can be removed if desired.
**/
typedef struct nih_signal NihSignal;
typedef void (*NihSignalHandler) (void *data, NihSignal *signal);
/**
* NihSignal:
* @entry: list header,
* @signum: signal to catch,
* @handler: function called when caught,
* @data: pointer passed to @handler.
*
* This structure contains information about a function that should be
* called whenever a particular signal is raised. The calling is done
* inside the main loop rather than inside the signal handler, so the
* function is free to do whatever it wishes.
*
* The callback can be removed by using nih_list_remove() as they are
* held in a list internally.
**/
struct nih_signal {
NihList entry;
int signum;
NihSignalHandler handler;
void *data;
};
NIH_BEGIN_EXTERN
extern NihList *nih_signals;
void nih_signal_init (void);
int nih_signal_set_handler (int signum, void (*handler)(int));
int nih_signal_set_default (int signum);
int nih_signal_set_ignore (int signum);
void nih_signal_reset (void);
NihSignal * nih_signal_add_handler (const void *parent, int signum,
NihSignalHandler handler, void *data)
__attribute__ ((warn_unused_result, malloc));
void nih_signal_handler (int signum);
void nih_signal_poll (void);
const char *nih_signal_to_name (int signum);
int nih_signal_from_name (const char *signame);
NIH_END_EXTERN
#endif /* NIH_SIGNAL_H */
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