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/*
** Copyright 1998 - 2014 Double Precision, Inc. See COPYING for
** distribution information.
*/
#include "liblock.h"
#if USE_FCNTL
#include "lockfcntl.c"
#endif
#if USE_FLOCK
#include "lockflock.c"
#endif
#if USE_LOCKF
#include "locklockf.c"
#endif
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
int main()
{
#define FILENAME "courier-imap.locktest.XXXXXXXXXX"
int fd[2];
pid_t p;
int s;
int f;
char *name;
const char *tmpdir;
if ((tmpdir = (char *)getenv("TMPDIR")) == NULL || !*tmpdir)
tmpdir = "/tmp";
if ((name=malloc(strlen(tmpdir)+sizeof(FILENAME)+1)) == NULL)
{
perror("get filename");
exit(1);
}
(void)sprintf(name, "%s/%s", tmpdir, FILENAME);
signal(SIGCHLD, SIG_DFL);
if (pipe(fd))
{
perror("pipe");
return (1);
}
if ((f=mkstemp(name)) < 0)
{
perror("open");
exit(1);
}
if ((p=fork()) == (pid_t)-1)
{
perror("fork");
return (1);
}
if (p == 0)
{
char c;
close(fd[1]);
read(fd[0], &c, 1);
close(fd[0]);
if ((f=open(name, O_RDWR)) < 0)
{
perror("open");
exit(1);
}
alarm(5);
if (ll_lockfd(f, ll_writelock, 0, 0))
{
close(f);
unlink(name);
exit(0);
}
close(f);
exit(1);
}
if (ll_lockfd(f, ll_writelock, 0, 0))
{
perror("lock");
close(f);
unlink(name);
exit(1);
}
close(fd[1]);
close(fd[0]);
while (wait(&s) != p)
;
if (s == 0)
exit(0);
exit(1);
}
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