mirror of git://git.gnupg.org/gnupg.git
88 lines
1.9 KiB
C
88 lines
1.9 KiB
C
/* dotlock.c - Command to handle dotlock.
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* Copyright (C) 2023 g10 Code GmbH
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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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* SPDX-License-Identifier: GPL-3.0-or-later
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*/
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#include <config.h>
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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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#ifdef HAVE_W32_SYSTEM
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# include "windows.h"
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#else
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#include <sys/random.h>
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#endif
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#include "dotlock.h"
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static void
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lock (const char *fname)
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{
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dotlock_t h;
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unsigned int flags = DOTLOCK_FLAG_LOCK_BY_PARENT;
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h = dotlock_create (fname, flags);
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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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if (dotlock_take (h, 0))
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die ("error taking lock");
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}
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static void
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unlock (const char *fname, long timeout)
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{
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dotlock_t h;
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unsigned int flags = (DOTLOCK_FLAG_LOCK_BY_PARENT
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| DOTLOCK_FLAG_READONLY);
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h = dotlock_create (fname, flags);
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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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dotlock_destroy (h);
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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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fname = argv[argc-1];
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if ()
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lock (fname);
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else
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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"
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End:
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*/
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