1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright 2024 Oxide Computer Company 26 */ 27 28 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 29 /* All Rights Reserved */ 30 31 #include "lint.h" 32 #include <sys/param.h> 33 #include <sys/sockio.h> 34 #include <sys/filio.h> 35 #include <sys/file.h> 36 #include <sys/types.h> 37 #include <fcntl.h> 38 #include <signal.h> 39 #include <sys/stat.h> 40 #include <sys/stropts.h> 41 #include <sys/socket.h> 42 #include <sys/stropts.h> 43 #include <sys/stream.h> 44 #include <sys/socketvar.h> 45 #include <sys/syscall.h> 46 #include <errno.h> 47 #include <stdio.h> 48 #include <stdarg.h> 49 #include <unistd.h> 50 #include <string.h> 51 #include <stdlib.h> 52 #include "libc.h" 53 54 #if !defined(_LP64) 55 /* 56 * XXX these hacks are needed for X.25 which assumes that s_fcntl and 57 * s_ioctl exist in the socket library. 58 * There is no need for s_ioctl for other purposes. 59 */ 60 #pragma weak s_fcntl = __fcntl 61 #pragma weak _s_fcntl = __fcntl 62 int 63 s_ioctl(int fd, int cmd, intptr_t arg) 64 { 65 return (ioctl(fd, cmd, arg)); 66 } 67 #endif /* _LP64 */ 68 69 int 70 __fcntl(int fd, int cmd, ...) 71 { 72 int res; 73 int pid; 74 intptr_t arg, arg1 = 0; 75 va_list ap; 76 77 /* 78 * The fcntl(2) entry points are responsible for marshalling arguments 79 * into intptr_t sized objects prior to calling this. The kernel only 80 * works in terms of intptr_t sized arguments; however, some calls (like 81 * F_DUP3FD) are in terms of two int sized arguments. 82 */ 83 va_start(ap, cmd); 84 arg = va_arg(ap, intptr_t); 85 if (cmd == F_DUP3FD) { 86 arg1 = va_arg(ap, intptr_t); 87 } 88 va_end(ap); 89 90 switch (cmd) { 91 case F_SETOWN: 92 pid = (int)arg; 93 return (ioctl(fd, FIOSETOWN, &pid)); 94 95 case F_GETOWN: 96 if (ioctl(fd, FIOGETOWN, &res) < 0) 97 return (-1); 98 return (res); 99 100 default: 101 return (syscall(SYS_fcntl, fd, cmd, arg, arg1)); 102 } 103 } 104