| 1 | /* $NetBSD: linux_termios.c,v 1.37 2013/12/27 16:58:50 njoly Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1995, 1998, 2008 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Frank van der Linden and Eric Haszlakiewicz. |
| 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 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #include <sys/cdefs.h> |
| 33 | __KERNEL_RCSID(0, "$NetBSD: linux_termios.c,v 1.37 2013/12/27 16:58:50 njoly Exp $" ); |
| 34 | |
| 35 | #if defined(_KERNEL_OPT) |
| 36 | #include "opt_ptm.h" |
| 37 | #endif |
| 38 | |
| 39 | #include <sys/param.h> |
| 40 | #include <sys/proc.h> |
| 41 | #include <sys/systm.h> |
| 42 | #include <sys/file.h> |
| 43 | #include <sys/filedesc.h> |
| 44 | #include <sys/ioctl.h> |
| 45 | #include <sys/mount.h> |
| 46 | #include <sys/termios.h> |
| 47 | #include <sys/kernel.h> |
| 48 | |
| 49 | #include <sys/syscallargs.h> |
| 50 | |
| 51 | #include <compat/linux/common/linux_types.h> |
| 52 | #include <compat/linux/common/linux_ioctl.h> |
| 53 | #include <compat/linux/common/linux_signal.h> |
| 54 | #include <compat/linux/common/linux_util.h> |
| 55 | #include <compat/linux/common/linux_termios.h> |
| 56 | #include <compat/linux/common/linux_ipc.h> |
| 57 | #include <compat/linux/common/linux_sem.h> |
| 58 | |
| 59 | #include <compat/linux/linux_syscallargs.h> |
| 60 | |
| 61 | #ifdef DEBUG_LINUX |
| 62 | #define DPRINTF(a) uprintf a |
| 63 | #else |
| 64 | #define DPRINTF(a) |
| 65 | #endif |
| 66 | |
| 67 | int |
| 68 | linux_ioctl_termios(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval) |
| 69 | { |
| 70 | /* { |
| 71 | syscallarg(int) fd; |
| 72 | syscallarg(u_long) com; |
| 73 | syscallarg(void *) data; |
| 74 | } */ |
| 75 | file_t *fp; |
| 76 | u_long com; |
| 77 | struct linux_termio tmplt; |
| 78 | struct linux_termios tmplts; |
| 79 | struct termios tmpbts; |
| 80 | int idat; |
| 81 | struct sys_ioctl_args ia; |
| 82 | int error; |
| 83 | char tioclinux; |
| 84 | int (*bsdioctl)(file_t *, u_long, void *); |
| 85 | |
| 86 | if ((fp = fd_getfile(SCARG(uap, fd))) == NULL) |
| 87 | return (EBADF); |
| 88 | |
| 89 | if ((fp->f_flag & (FREAD | FWRITE)) == 0) { |
| 90 | error = EBADF; |
| 91 | goto out; |
| 92 | } |
| 93 | |
| 94 | bsdioctl = fp->f_ops->fo_ioctl; |
| 95 | com = SCARG(uap, com); |
| 96 | retval[0] = 0; |
| 97 | |
| 98 | switch (com) { |
| 99 | case LINUX_TCGETS: |
| 100 | error = (*bsdioctl)(fp, TIOCGETA, &tmpbts); |
| 101 | if (error) |
| 102 | goto out; |
| 103 | bsd_termios_to_linux_termios(&tmpbts, &tmplts); |
| 104 | error = copyout(&tmplts, SCARG(uap, data), sizeof tmplts); |
| 105 | goto out; |
| 106 | case LINUX_TCSETS: |
| 107 | case LINUX_TCSETSW: |
| 108 | case LINUX_TCSETSF: |
| 109 | /* |
| 110 | * First fill in all fields, so that we keep the current |
| 111 | * values for fields that Linux doesn't know about. |
| 112 | */ |
| 113 | error = (*bsdioctl)(fp, TIOCGETA, &tmpbts); |
| 114 | if (error) |
| 115 | goto out; |
| 116 | error = copyin(SCARG(uap, data), &tmplts, sizeof tmplts); |
| 117 | if (error) |
| 118 | goto out; |
| 119 | linux_termios_to_bsd_termios(&tmplts, &tmpbts); |
| 120 | switch (com) { |
| 121 | case LINUX_TCSETS: |
| 122 | com = TIOCSETA; |
| 123 | break; |
| 124 | case LINUX_TCSETSW: |
| 125 | com = TIOCSETAW; |
| 126 | break; |
| 127 | case LINUX_TCSETSF: |
| 128 | com = TIOCSETAF; |
| 129 | break; |
| 130 | } |
| 131 | error = (*bsdioctl)(fp, com, &tmpbts); |
| 132 | goto out; |
| 133 | case LINUX_TCGETA: |
| 134 | error = (*bsdioctl)(fp, TIOCGETA, &tmpbts); |
| 135 | if (error) |
| 136 | goto out; |
| 137 | bsd_termios_to_linux_termio(&tmpbts, &tmplt); |
| 138 | error = copyout(&tmplt, SCARG(uap, data), sizeof tmplt); |
| 139 | goto out; |
| 140 | case LINUX_TCSETA: |
| 141 | case LINUX_TCSETAW: |
| 142 | case LINUX_TCSETAF: |
| 143 | /* |
| 144 | * First fill in all fields, so that we keep the current |
| 145 | * values for fields that Linux doesn't know about. |
| 146 | */ |
| 147 | error = (*bsdioctl)(fp, TIOCGETA, &tmpbts); |
| 148 | if (error) |
| 149 | goto out; |
| 150 | error = copyin(SCARG(uap, data), &tmplt, sizeof tmplt); |
| 151 | if (error) |
| 152 | goto out; |
| 153 | linux_termio_to_bsd_termios(&tmplt, &tmpbts); |
| 154 | switch (com) { |
| 155 | case LINUX_TCSETA: |
| 156 | com = TIOCSETA; |
| 157 | break; |
| 158 | case LINUX_TCSETAW: |
| 159 | com = TIOCSETAW; |
| 160 | break; |
| 161 | case LINUX_TCSETAF: |
| 162 | com = TIOCSETAF; |
| 163 | break; |
| 164 | } |
| 165 | error = (*bsdioctl)(fp, com, &tmpbts); |
| 166 | goto out; |
| 167 | case LINUX_TCFLSH: |
| 168 | switch((u_long)SCARG(uap, data)) { |
| 169 | case 0: |
| 170 | idat = FREAD; |
| 171 | break; |
| 172 | case 1: |
| 173 | idat = FWRITE; |
| 174 | break; |
| 175 | case 2: |
| 176 | idat = 0; |
| 177 | break; |
| 178 | default: |
| 179 | error = EINVAL; |
| 180 | goto out; |
| 181 | } |
| 182 | error = (*bsdioctl)(fp, TIOCFLUSH, &idat); |
| 183 | goto out; |
| 184 | case LINUX_TIOCGETD: |
| 185 | error = (*bsdioctl)(fp, TIOCGETD, &idat); |
| 186 | if (error) |
| 187 | goto out; |
| 188 | switch (idat) { |
| 189 | case TTYDISC: |
| 190 | idat = LINUX_N_TTY; |
| 191 | break; |
| 192 | case SLIPDISC: |
| 193 | idat = LINUX_N_SLIP; |
| 194 | break; |
| 195 | case PPPDISC: |
| 196 | idat = LINUX_N_PPP; |
| 197 | break; |
| 198 | case STRIPDISC: |
| 199 | idat = LINUX_N_STRIP; |
| 200 | break; |
| 201 | /* |
| 202 | * Linux does not have the tablet line discipline. |
| 203 | */ |
| 204 | case TABLDISC: |
| 205 | default: |
| 206 | idat = -1; /* XXX What should this be? */ |
| 207 | break; |
| 208 | } |
| 209 | error = copyout(&idat, SCARG(uap, data), sizeof idat); |
| 210 | goto out; |
| 211 | case LINUX_TIOCSETD: |
| 212 | error = copyin(SCARG(uap, data), &idat, sizeof idat); |
| 213 | if (error) |
| 214 | goto out; |
| 215 | switch (idat) { |
| 216 | case LINUX_N_TTY: |
| 217 | idat = TTYDISC; |
| 218 | break; |
| 219 | case LINUX_N_SLIP: |
| 220 | idat = SLIPDISC; |
| 221 | break; |
| 222 | case LINUX_N_PPP: |
| 223 | idat = PPPDISC; |
| 224 | break; |
| 225 | case LINUX_N_STRIP: |
| 226 | idat = STRIPDISC; |
| 227 | break; |
| 228 | /* |
| 229 | * We can't handle the mouse line discipline Linux has. |
| 230 | */ |
| 231 | case LINUX_N_MOUSE: |
| 232 | case LINUX_N_AX25: |
| 233 | case LINUX_N_X25: |
| 234 | case LINUX_N_6PACK: |
| 235 | default: |
| 236 | error = EINVAL; |
| 237 | goto out; |
| 238 | } |
| 239 | error = (*bsdioctl)(fp, TIOCSETD, &idat); |
| 240 | goto out; |
| 241 | case LINUX_TIOCLINUX: |
| 242 | error = copyin(SCARG(uap, data), &tioclinux, sizeof tioclinux); |
| 243 | if (error != 0) |
| 244 | goto out; |
| 245 | switch (tioclinux) { |
| 246 | case LINUX_TIOCLINUX_KERNMSG: |
| 247 | /* |
| 248 | * XXX needed to not fail for some things. Could |
| 249 | * try to use TIOCCONS, but the char argument |
| 250 | * specifies the VT #, not an fd. |
| 251 | */ |
| 252 | error = 0; |
| 253 | goto out; |
| 254 | case LINUX_TIOCLINUX_COPY: |
| 255 | case LINUX_TIOCLINUX_PASTE: |
| 256 | case LINUX_TIOCLINUX_UNBLANK: |
| 257 | case LINUX_TIOCLINUX_LOADLUT: |
| 258 | case LINUX_TIOCLINUX_READSHIFT: |
| 259 | case LINUX_TIOCLINUX_READMOUSE: |
| 260 | case LINUX_TIOCLINUX_VESABLANK: |
| 261 | case LINUX_TIOCLINUX_CURCONS: /* could use VT_GETACTIVE */ |
| 262 | error = EINVAL; |
| 263 | goto out; |
| 264 | } |
| 265 | break; |
| 266 | case LINUX_TIOCGWINSZ: |
| 267 | SCARG(&ia, com) = TIOCGWINSZ; |
| 268 | break; |
| 269 | case LINUX_TIOCSWINSZ: |
| 270 | SCARG(&ia, com) = TIOCSWINSZ; |
| 271 | break; |
| 272 | case LINUX_TIOCGPGRP: |
| 273 | SCARG(&ia, com) = TIOCGPGRP; |
| 274 | break; |
| 275 | case LINUX_TIOCSPGRP: |
| 276 | SCARG(&ia, com) = TIOCSPGRP; |
| 277 | break; |
| 278 | case LINUX_FIONREAD: |
| 279 | SCARG(&ia, com) = FIONREAD; |
| 280 | break; |
| 281 | case LINUX_FIONBIO: |
| 282 | SCARG(&ia, com) = FIONBIO; |
| 283 | break; |
| 284 | case LINUX_FIOASYNC: |
| 285 | SCARG(&ia, com) = FIOASYNC; |
| 286 | break; |
| 287 | case LINUX_TIOCEXCL: |
| 288 | SCARG(&ia, com) = TIOCEXCL; |
| 289 | break; |
| 290 | case LINUX_TIOCNXCL: |
| 291 | SCARG(&ia, com) = TIOCNXCL; |
| 292 | break; |
| 293 | case LINUX_TIOCCONS: |
| 294 | SCARG(&ia, com) = TIOCCONS; |
| 295 | break; |
| 296 | case LINUX_TIOCNOTTY: |
| 297 | SCARG(&ia, com) = TIOCNOTTY; |
| 298 | break; |
| 299 | case LINUX_TCSBRK: |
| 300 | idat = (u_long)SCARG(uap, data); |
| 301 | if (idat != 0) |
| 302 | SCARG(&ia, com) = TIOCDRAIN; |
| 303 | else { |
| 304 | if ((error = (*bsdioctl)(fp, TIOCSBRK, NULL)) != 0) |
| 305 | goto out; |
| 306 | error = tsleep(&idat, PZERO | PCATCH, "linux_tcsbrk" , hz / 4); |
| 307 | if (error == EINTR || error == ERESTART) { |
| 308 | (void)(*bsdioctl)(fp, TIOCCBRK, NULL); |
| 309 | error = EINTR; |
| 310 | } else |
| 311 | error = (*bsdioctl)(fp, TIOCCBRK, NULL); |
| 312 | goto out; |
| 313 | } |
| 314 | break; |
| 315 | case LINUX_TIOCMGET: |
| 316 | SCARG(&ia, com) = TIOCMGET; |
| 317 | break; |
| 318 | case LINUX_TIOCMSET: |
| 319 | SCARG(&ia, com) = TIOCMSET; |
| 320 | break; |
| 321 | case LINUX_TIOCMBIC: |
| 322 | SCARG(&ia, com) = TIOCMBIC; |
| 323 | break; |
| 324 | case LINUX_TIOCMBIS: |
| 325 | SCARG(&ia, com) = TIOCMBIS; |
| 326 | break; |
| 327 | #ifdef LINUX_TIOCGPTN |
| 328 | case LINUX_TIOCGPTN: |
| 329 | #ifndef NO_DEV_PTM |
| 330 | { |
| 331 | struct ptmget ptm; |
| 332 | |
| 333 | error = (*bsdioctl)(fp, TIOCPTSNAME, &ptm); |
| 334 | if (error != 0) |
| 335 | goto out; |
| 336 | error = copyout(&ptm.sfd, SCARG(uap, data), |
| 337 | sizeof(ptm.sfd)); |
| 338 | goto out; |
| 339 | } |
| 340 | #endif /* NO_DEV_PTM */ |
| 341 | #endif /* LINUX_TIOCGPTN */ |
| 342 | #ifdef LINUX_TIOCSPTLCK |
| 343 | case LINUX_TIOCSPTLCK: |
| 344 | fd_putfile(SCARG(uap, fd)); |
| 345 | error = copyin(SCARG(uap, data), &idat, sizeof(idat)); |
| 346 | if (error) |
| 347 | return error; |
| 348 | DPRINTF(("TIOCSPTLCK %d\n" , idat)); |
| 349 | return 0; |
| 350 | #endif |
| 351 | case LINUX_TCXONC: |
| 352 | idat = (u_long)SCARG(uap, data); |
| 353 | switch (idat) { |
| 354 | case LINUX_TCOOFF: |
| 355 | SCARG(&ia, com) = TIOCSTOP; |
| 356 | break; |
| 357 | case LINUX_TCOON: |
| 358 | SCARG(&ia, com) = TIOCSTART; |
| 359 | break; |
| 360 | case LINUX_TCIOFF: |
| 361 | case LINUX_TCION: |
| 362 | default: |
| 363 | error = EINVAL; |
| 364 | goto out; |
| 365 | } |
| 366 | break; |
| 367 | default: |
| 368 | error = EINVAL; |
| 369 | goto out; |
| 370 | } |
| 371 | |
| 372 | SCARG(&ia, fd) = SCARG(uap, fd); |
| 373 | SCARG(&ia, data) = SCARG(uap, data); |
| 374 | error = sys_ioctl(curlwp, &ia, retval); |
| 375 | out: |
| 376 | fd_putfile(SCARG(uap, fd)); |
| 377 | return error; |
| 378 | } |
| 379 | |