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146 lines
3.1 KiB
C
146 lines
3.1 KiB
C
/* t-dotlock.c - Module test for dotlock.c
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* Copyright (C) 2011 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG 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 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG 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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*
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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, see <https://www.gnu.org/licenses/>.
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*/
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/* Note: This is a standalone test program which does not rely on any
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GnuPG helper files. However, it may also be build as part of the
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GnuPG build system. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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/* Some quick replacements for stuff we usually expect to be defined
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in config.h. Define HAVE_POSIX_SYSTEM for better readability. */
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#if !defined (HAVE_DOSISH_SYSTEM) && defined(_WIN32)
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# define HAVE_DOSISH_SYSTEM 1
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#endif
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#if !defined (HAVE_DOSISH_SYSTEM) && !defined (HAVE_POSIX_SYSTEM)
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# define HAVE_POSIX_SYSTEM 1
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <signal.h>
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#include <unistd.h>
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#include "dotlock.h"
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#define PGM "t-dotlock"
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static volatile int ctrl_c_pending;
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static void
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control_c_handler (int signo)
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{
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(void)signo;
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ctrl_c_pending = 1;
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}
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static void
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die (const char *format, ...)
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{
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va_list arg_ptr;
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va_start (arg_ptr, format);
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fprintf (stderr, PGM "[%lu]: ", (unsigned long)getpid ());
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vfprintf (stderr, format, arg_ptr);
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putc ('\n', stderr);
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va_end (arg_ptr);
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exit (1);
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}
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static void
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inf (const char *format, ...)
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{
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va_list arg_ptr;
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va_start (arg_ptr, format);
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fprintf (stderr, PGM "[%lu]: ", (unsigned long)getpid ());
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vfprintf (stderr, format, arg_ptr);
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putc ('\n', stderr);
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va_end (arg_ptr);
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}
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static void
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lock_and_unlock (const char *fname)
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{
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dotlock_t h;
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h = dotlock_create (fname, 0);
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if (!h)
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die ("error creating lock file for '%s': %s", fname, strerror (errno));
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inf ("lock created");
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while (!ctrl_c_pending)
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{
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if (dotlock_take (h, -1))
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die ("error taking lock");
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inf ("lock taken");
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sleep (1);
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if (dotlock_release (h))
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die ("error releasing lock");
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inf ("lock released");
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sleep (1);
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}
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dotlock_destroy (h);
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inf ("lock destroyed");
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}
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int
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main (int argc, char **argv)
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{
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const char *fname;
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if (argc > 1)
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fname = argv[1];
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else
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fname = "t-dotlock.tmp";
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{
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struct sigaction nact;
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nact.sa_handler = control_c_handler;
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nact.sa_flags = 0;
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sigaction (SIGINT, &nact, NULL);
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}
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dotlock_create (NULL, 0); /* Initialize (optional). */
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lock_and_unlock (fname);
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return 0;
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}
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/*
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Local Variables:
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compile-command: "cc -Wall -O2 -D_FILE_OFFSET_BITS=64 -o t-dotlock t-dotlock.c dotlock.c"
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End:
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*/
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