a53cab2c6c
Append '__' prefix to the tag of struct oflock, and put it under BSD namespace. Structure is needed both by libc and kernel, thus cannot be hidden under #ifdef _KERNEL. Move a set of non-standard F_* and O_* constants into BSD namespace. SUSv4 explicitely allows implemenation to pollute F_* and O_* names after fcntl.h is included, but it costs us nothing to adhere to the specification if exact POSIX compliance level is requested by user code. Change some spaces after #define to tabs. Noted by and discussed with: bde MFC after: 1 week
90 lines
2.7 KiB
C
90 lines
2.7 KiB
C
/*-
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* Copyright (c) 2008 Isilon Inc http://www.isilon.com/
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* Authors: Doug Rabson <dfr@rabson.org>
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* Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <fcntl.h>
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#include <stdarg.h>
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#include <sys/types.h>
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#include <sys/syscall.h>
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#include "libc_private.h"
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__weak_reference(__fcntl_compat, fcntl);
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int
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__fcntl_compat(int fd, int cmd, ...)
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{
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va_list args;
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long arg;
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struct __oflock ofl;
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struct flock *flp;
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int res;
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va_start(args, cmd);
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arg = va_arg(args, long);
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va_end(args);
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if (__getosreldate() >= 800028) {
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return (__sys_fcntl(fd, cmd, arg));
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} else {
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if (cmd == F_GETLK || cmd == F_SETLK || cmd == F_SETLKW) {
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/*
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* Convert new-style struct flock (which
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* includes l_sysid) to old-style.
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*/
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flp = (struct flock *) (uintptr_t) arg;
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ofl.l_start = flp->l_start;
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ofl.l_len = flp->l_len;
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ofl.l_pid = flp->l_pid;
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ofl.l_type = flp->l_type;
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ofl.l_whence = flp->l_whence;
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switch (cmd) {
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case F_GETLK:
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res = __sys_fcntl(fd, F_OGETLK, &ofl);
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if (res >= 0) {
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flp->l_start = ofl.l_start;
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flp->l_len = ofl.l_len;
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flp->l_pid = ofl.l_pid;
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flp->l_type = ofl.l_type;
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flp->l_whence = ofl.l_whence;
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flp->l_sysid = 0;
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}
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return (res);
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case F_SETLK:
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return (__sys_fcntl(fd, F_OSETLK, &ofl));
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case F_SETLKW:
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return (__sys_fcntl(fd, F_OSETLKW, &ofl));
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}
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}
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return (__sys_fcntl(fd, cmd, arg));
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}
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}
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