1 /*- 2 * Copyright (c) 2008 Isilon Inc http://www.isilon.com/ 3 * Authors: Doug Rabson <dfr@rabson.org> 4 * Developed with Red Inc: Alfred Perlstein <alfred@freebsd.org> 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 __FBSDID("$FreeBSD$"); 30 31 #include <fcntl.h> 32 #include <stdarg.h> 33 #include <sys/types.h> 34 #include <sys/syscall.h> 35 #include "libc_private.h" 36 37 int 38 fcntl(int fd, int cmd, ...) 39 { 40 va_list args; 41 long arg; 42 struct oflock ofl; 43 struct flock *flp; 44 int res; 45 46 va_start(args, cmd); 47 arg = va_arg(args, long); 48 va_end(args); 49 50 if (__getosreldate() >= 800028) { 51 return (__sys_fcntl(fd, cmd, arg)); 52 } else { 53 if (cmd == F_GETLK || cmd == F_SETLK || cmd == F_SETLKW) { 54 /* 55 * Convert new-style struct flock (which 56 * includes l_sysid) to old-style. 57 */ 58 flp = (struct flock *) (uintptr_t) arg; 59 ofl.l_start = flp->l_start; 60 ofl.l_len = flp->l_len; 61 ofl.l_pid = flp->l_pid; 62 ofl.l_type = flp->l_type; 63 ofl.l_whence = flp->l_whence; 64 65 switch (cmd) { 66 case F_GETLK: 67 res = __sys_fcntl(fd, F_OGETLK, &ofl); 68 if (res >= 0) { 69 flp->l_start = ofl.l_start; 70 flp->l_len = ofl.l_len; 71 flp->l_pid = ofl.l_pid; 72 flp->l_type = ofl.l_type; 73 flp->l_whence = ofl.l_whence; 74 flp->l_sysid = 0; 75 } 76 return (res); 77 78 case F_SETLK: 79 return (__sys_fcntl(fd, F_OSETLK, &ofl)); 80 81 case F_SETLKW: 82 return (__sys_fcntl(fd, F_OSETLKW, &ofl)); 83 } 84 } 85 return (__sys_fcntl(fd, cmd, arg)); 86 } 87 } 88