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/*
** Copyright 2003 Double Precision, Inc.
** See COPYING for distribution information.
*/
#include "config.h"
#include "maildirwatch.h"
#include "maildircreate.h"
#include "liblock/config.h"
#include "liblock/liblock.h"
#include "liblock/mail.h"
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
#include <errno.h>
/*
** Courier-IMAP compatible maildir lock.
*/
char *maildir_lock(const char *dir, struct maildirwatch *w,
int *tryAnyway)
{
struct maildir_tmpcreate_info createInfo;
char *tmpname;
char *newname;
int rc;
*tryAnyway=0;
maildir_tmpcreate_init(&createInfo);
createInfo.maildir=dir;
createInfo.uniq="courierlock";
createInfo.hostname=getenv("HOSTNAME");
createInfo.doordie=1;
if ((rc=maildir_tmpcreate_fd(&createInfo)) < 0)
return NULL;
close(rc);
tmpname=createInfo.tmpname;
newname=createInfo.newname;
createInfo.tmpname=NULL;
createInfo.newname=NULL;
maildir_tmpcreate_free(&createInfo);
/* HACK: newname now contains: ".../new/filename" */
strcpy(strrchr(newname, '/')-3, WATCHDOTLOCK);
while (ll_dotlock(newname, tmpname, 120) < 0)
{
if (errno == EEXIST)
{
if (w == NULL || maildirwatch_unlock(w, 120) < 0)
sleep(1);
continue;
}
if (errno == EAGAIN)
{
unlink(newname);
sleep(5);
continue;
}
free(newname);
newname=NULL;
*tryAnyway=1;
break;
}
free(tmpname);
return newname;
}
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