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📄 Makefile(775 B)
📄 Makefile.depend(398 B)
📄 activemap.c(17.58 KB)
📄 activemap.h(2.86 KB)
📄 control.c(14.08 KB)
📄 control.h(1.86 KB)
📄 crc32.c(5.58 KB)
📄 crc32.h(532 B)
📄 ebuf.c(5.95 KB)
📄 ebuf.h(2 KB)
📄 event.c(4.18 KB)
📄 event.h(1.83 KB)
📄 hast.conf.5(11.13 KB)
📄 hast.h(7.98 KB)
📄 hast_checksum.c(4.13 KB)
📄 hast_checksum.h(1.83 KB)
📄 hast_compression.c(6.69 KB)
📄 hast_compression.h(1.85 KB)
📄 hast_proto.c(5.15 KB)
📄 hast_proto.h(1.98 KB)
📄 hastd.8(6.57 KB)
📄 hastd.c(36.46 KB)
📄 hastd.h(2.04 KB)
📄 hooks.c(9.37 KB)
📄 hooks.h(1.88 KB)
📄 lzf.c(11.03 KB)
📄 lzf.h(7.31 KB)
📄 metadata.c(6.43 KB)
📄 metadata.h(1.83 KB)
📄 nv.c(21.83 KB)
📄 nv.h(5.84 KB)
📄 parse.y(22.02 KB)
📄 pjdlog.c(12.97 KB)
📄 pjdlog.h(4.71 KB)
📄 primary.c(67.26 KB)
📄 proto.c(10.66 KB)
📄 proto.h(2.73 KB)
📄 proto_common.c(5.81 KB)
📄 proto_impl.h(3.08 KB)
📄 proto_socketpair.c(5.75 KB)
📄 proto_tcp.c(14.76 KB)
📄 proto_uds.c(8.32 KB)
📄 rangelock.c(3.49 KB)
📄 rangelock.h(1.94 KB)
📄 refcnt.h(1.91 KB)
📄 secondary.c(26.69 KB)
📄 subr.c(7.83 KB)
📄 subr.h(2.09 KB)
📄 synch.h(4.77 KB)
📄 token.l(2.84 KB)

Editing: rangelock.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2010 The FreeBSD Foundation
 * All rights reserved.
 *
 * This software was developed by Pawel Jakub Dawidek under sponsorship from
 * the FreeBSD Foundation.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/queue.h>

#include <stdbool.h>
#include <stdlib.h>
#include <unistd.h>

#include <pjdlog.h>

#include "rangelock.h"

#ifndef	PJDLOG_ASSERT
#include <assert.h>
#define	PJDLOG_ASSERT(...)	assert(__VA_ARGS__)
#endif

#define	RANGELOCKS_MAGIC	0x94310c
struct rangelocks {
	int	 rls_magic;		/* Magic value. */
	TAILQ_HEAD(, rlock) rls_locks;	/* List of locked ranges. */
};

struct rlock {
	off_t	rl_start;
	off_t	rl_end;
	TAILQ_ENTRY(rlock) rl_next;
};

int
rangelock_init(struct rangelocks **rlsp)
{
	struct rangelocks *rls;

PJDLOG_ASSERT(rlsp != NULL);

rls = malloc(sizeof(*rls));
	if (rls == NULL)
		return (-1);

TAILQ_INIT(&rls->rls_locks);

rls->rls_magic = RANGELOCKS_MAGIC;
	*rlsp = rls;

return (0);
}

void
rangelock_free(struct rangelocks *rls)
{
	struct rlock *rl;

PJDLOG_ASSERT(rls->rls_magic == RANGELOCKS_MAGIC);

rls->rls_magic = 0;

while ((rl = TAILQ_FIRST(&rls->rls_locks)) != NULL) {
		TAILQ_REMOVE(&rls->rls_locks, rl, rl_next);
		free(rl);
	}
	free(rls);
}

int
rangelock_add(struct rangelocks *rls, off_t offset, off_t length)
{
	struct rlock *rl;

PJDLOG_ASSERT(rls->rls_magic == RANGELOCKS_MAGIC);

rl = malloc(sizeof(*rl));
	if (rl == NULL)
		return (-1);
	rl->rl_start = offset;
	rl->rl_end = offset + length;
	TAILQ_INSERT_TAIL(&rls->rls_locks, rl, rl_next);
	return (0);
}

void
rangelock_del(struct rangelocks *rls, off_t offset, off_t length)
{
	struct rlock *rl;

PJDLOG_ASSERT(rls->rls_magic == RANGELOCKS_MAGIC);

TAILQ_FOREACH(rl, &rls->rls_locks, rl_next) {
		if (rl->rl_start == offset && rl->rl_end == offset + length)
			break;
	}
	PJDLOG_ASSERT(rl != NULL);
	TAILQ_REMOVE(&rls->rls_locks, rl, rl_next);
	free(rl);
}

bool
rangelock_islocked(struct rangelocks *rls, off_t offset, off_t length)
{
	struct rlock *rl;
	off_t end;

PJDLOG_ASSERT(rls->rls_magic == RANGELOCKS_MAGIC);

end = offset + length;
	TAILQ_FOREACH(rl, &rls->rls_locks, rl_next) {
		if (rl->rl_start < end && rl->rl_end > offset)
			break;
	}
	return (rl != NULL);
}

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Editing: rangelock.c

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