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/*-
* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
* Authors: Doug Rabson <dfr@rabson.org>
* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
*
* 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 AUTHOR 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 AUTHOR 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 <fcntl.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/syscall.h>
#include "libc_private.h"
#pragma weak fcntl
int
fcntl(int fd, int cmd, ...)
{
va_list args;
long arg;
va_start(args, cmd);
arg = va_arg(args, long);
va_end(args);
return (((int (*)(int, int, ...))
__libc_interposing[INTERPOS_fcntl])(fd, cmd, arg));
}
#ifdef SYSCALL_COMPAT
__weak_reference(__fcntl_compat, __fcntl);
int
__fcntl_compat(int fd, int cmd, ...)
{
va_list args;
long arg;
struct __oflock ofl;
struct flock *flp;
int res;
va_start(args, cmd);
arg = va_arg(args, long);
va_end(args);
if (__getosreldate() >= 800028) {
return (__sys_fcntl(fd, cmd, arg));
} else {
if (cmd == F_GETLK || cmd == F_SETLK || cmd == F_SETLKW) {
/*
* Convert new-style struct flock (which
* includes l_sysid) to old-style.
*/
flp = (struct flock *) (uintptr_t) arg;
ofl.l_start = flp->l_start;
ofl.l_len = flp->l_len;
ofl.l_pid = flp->l_pid;
ofl.l_type = flp->l_type;
ofl.l_whence = flp->l_whence;
switch (cmd) {
case F_GETLK:
res = __sys_fcntl(fd, F_OGETLK, &ofl);
if (res >= 0) {
flp->l_start = ofl.l_start;
flp->l_len = ofl.l_len;
flp->l_pid = ofl.l_pid;
flp->l_type = ofl.l_type;
flp->l_whence = ofl.l_whence;
flp->l_sysid = 0;
}
return (res);
case F_SETLK:
return (__sys_fcntl(fd, F_OSETLK, &ofl));
case F_SETLKW:
return (__sys_fcntl(fd, F_OSETLKW, &ofl));
}
}
return (__sys_fcntl(fd, cmd, arg));
}
}
#else
__weak_reference(__sys_fcntl, __fcntl_compat);
__weak_reference(__sys_fcntl, __fcntl);
#endif
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