Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/compat/svr4_32/svr4_32_ioctl.c
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1 /* $NetBSD: svr4_32_ioctl.c,v 1.8 2003/01/19 16:47:14 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 1994 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: svr4_32_ioctl.c,v 1.8 2003/01/19 16:47:14 thorpej Exp $"); 41 42 #include <sys/param.h> 43 #include <sys/proc.h> 44 #include <sys/systm.h> 45 #include <sys/file.h> 46 #include <sys/filedesc.h> 47 #include <sys/ioctl.h> 48 #include <sys/termios.h> 49 #include <sys/tty.h> 50 #include <sys/socket.h> 51 #include <sys/ioctl.h> 52 #include <sys/mount.h> 53 #include <net/if.h> 54 #include <sys/malloc.h> 55 56 #include <sys/sa.h> 57 #include <sys/syscallargs.h> 58 59 #include <compat/svr4_32/svr4_32_types.h> 60 #include <compat/svr4_32/svr4_32_util.h> 61 #include <compat/svr4_32/svr4_32_signal.h> 62 #include <compat/svr4_32/svr4_32_lwp.h> 63 #include <compat/svr4_32/svr4_32_ucontext.h> 64 #include <compat/svr4_32/svr4_32_syscallargs.h> 65 #include <compat/svr4_32/svr4_32_stropts.h> 66 #include <compat/svr4_32/svr4_32_ioctl.h> 67 #include <compat/svr4_32/svr4_32_termios.h> 68 #include <compat/svr4/svr4_ttold.h> 69 #include <compat/svr4/svr4_filio.h> 70 #include <compat/svr4_32/svr4_32_sockio.h> 71 72 #ifdef DEBUG_SVR4 73 static void svr4_32_decode_cmd __P((netbsd32_u_long, char *, char *, int *, int *)); 74 /* 75 * Decode an ioctl command symbolically 76 */ 77 static void 78 svr4_32_decode_cmd(cmd, dir, c, num, argsiz) 79 netbsd32_u_long cmd; 80 char *dir, *c; 81 int *num, *argsiz; 82 { 83 if (cmd & SVR4_IOC_VOID) 84 *dir++ = 'V'; 85 if (cmd & SVR4_IOC_IN) 86 *dir++ = 'R'; 87 if (cmd & SVR4_IOC_OUT) 88 *dir++ = 'W'; 89 *dir = '\0'; 90 if (cmd & SVR4_IOC_INOUT) 91 *argsiz = (cmd >> 16) & 0xff; 92 else 93 *argsiz = -1; 94 95 *c = (cmd >> 8) & 0xff; 96 *num = cmd & 0xff; 97 } 98 #endif 99 100 int 101 svr4_32_sys_ioctl(l, v, retval) 102 struct lwp *l; 103 void *v; 104 register_t *retval; 105 { 106 struct svr4_32_sys_ioctl_args *uap = v; 107 struct proc *p = l->l_proc; 108 struct file *fp; 109 struct filedesc *fdp; 110 u_long cmd; 111 int (*fun) __P((struct file *, struct lwp *, register_t *, 112 int, u_long, caddr_t)); 113 #ifdef DEBUG_SVR4 114 char dir[4]; 115 char c; 116 int num; 117 int argsiz; 118 119 svr4_32_decode_cmd(SCARG(uap, com), dir, &c, &num, &argsiz); 120 121 uprintf("svr4_32_ioctl(%d, _IO%s(%c, %d, %d), %#x);\n", SCARG(uap, fd), 122 dir, c, num, argsiz, SCARG(uap, data)); 123 #endif 124 fdp = p->p_fd; 125 cmd = SCARG(uap, com); 126 127 if ((fp = fd_getfile(fdp, SCARG(uap, fd))) == NULL) 128 return EBADF; 129 130 if ((fp->f_flag & (FREAD | FWRITE)) == 0) 131 return EBADF; 132 133 switch (cmd & 0xff00) { 134 case SVR4_tIOC: 135 fun = svr4_ttold_ioctl; 136 break; 137 138 case SVR4_TIOC: 139 fun = svr4_32_term_ioctl; 140 break; 141 142 case SVR4_STR: 143 fun = svr4_32_stream_ioctl; 144 break; 145 146 case SVR4_FIOC: 147 fun = svr4_fil_ioctl; 148 break; 149 150 case SVR4_SIOC: 151 fun = svr4_32_sock_ioctl; 152 break; 153 154 case SVR4_XIOC: 155 /* We do not support those */ 156 return EINVAL; 157 158 default: 159 DPRINTF(("Unimplemented ioctl %lx\n", cmd)); 160 return 0; /* XXX: really ENOSYS */ 161 } 162 return (*fun)(fp, l, retval, SCARG(uap, fd), cmd, 163 (caddr_t)(u_long)SCARG(uap, data)); 164 }
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