linux_cdrom.c

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    1 /*      $NetBSD: linux_cdrom.c,v 1.28 2021/09/07 11:43:04 riastradh Exp $ */
    2 
    3 /*
    4  * Copyright (c) 1997, 2008 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * Redistribution and use in source and binary forms, with or without
    8  * modification, are permitted provided that the following conditions
    9  * are met:
   10  * 1. Redistributions of source code must retain the above copyright
   11  *    notice, this list of conditions and the following disclaimer.
   12  * 2. Redistributions in binary form must reproduce the above copyright
   13  *    notice, this list of conditions and the following disclaimer in the
   14  *    documentation and/or other materials provided with the distribution.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   26  * POSSIBILITY OF SUCH DAMAGE.
   27  */
   28 
   29 #include <sys/cdefs.h>
   30 __KERNEL_RCSID(0, "$NetBSD: linux_cdrom.c,v 1.28 2021/09/07 11:43:04 riastradh Exp $");
   31 
   32 #include <sys/param.h>
   33 #include <sys/systm.h>
   34 #include <sys/ioctl.h>
   35 #include <sys/file.h>
   36 #include <sys/filedesc.h>
   37 #include <sys/mount.h>
   38 #include <sys/proc.h>
   39 #include <sys/cdio.h>
   40 #include <sys/dvdio.h>
   41 #include <sys/malloc.h>
   42 
   43 #include <sys/syscallargs.h>
   44 
   45 #include <compat/linux/common/linux_types.h>
   46 #include <compat/linux/common/linux_ioctl.h>
   47 #include <compat/linux/common/linux_signal.h>
   48 #include <compat/linux/common/linux_util.h>
   49 #include <compat/linux/common/linux_ipc.h>
   50 #include <compat/linux/common/linux_sem.h>
   51 #include <compat/linux/common/linux_cdrom.h>
   52 
   53 #include <compat/linux/linux_syscallargs.h>
   54 
   55 static int bsd_to_linux_msf_lba(unsigned address_format, union msf_lba *bml,
   56                                 union linux_cdrom_addr *llml);
   57 
   58 #if DEBUG_LINUX
   59 #define DPRINTF(x) uprintf x
   60 #else
   61 #define DPRINTF(x)
   62 #endif
   63 
   64 /*
   65  * XXX from dev/scsipi/cd.c
   66  */
   67 #define MAXTRACK 99
   68 
   69 static int
   70 bsd_to_linux_msf_lba(unsigned address_format, union msf_lba *bml,
   71                       union linux_cdrom_addr *llml)
   72 {
   73         switch (address_format) {
   74         case CD_LBA_FORMAT:
   75                 llml->lba = bml->lba;
   76                 break;
   77         case CD_MSF_FORMAT:
   78                 llml->msf.minute = bml->msf.minute;
   79                 llml->msf.second = bml->msf.second;
   80                 llml->msf.frame = bml->msf.frame;
   81                 break;
   82         default:
   83                 return -1;
   84         }
   85         return 0;
   86 }
   87 
   88 int
   89 linux_ioctl_cdrom(struct lwp *l, const struct linux_sys_ioctl_args *uap, register_t *retval)
   90 {
   91         /* {
   92                 syscallarg(int) fd;
   93                 syscallarg(u_long) com;
   94                 syscallarg(void *) data;
   95         } */
   96         int error, idata;
   97         u_long com, ncom;
   98         file_t *fp;
   99         int (*ioctlf)(file_t *, u_long, void *);
  100 
  101         union { 
  102                 struct linux_cdrom_blk ll_blk;
  103                 struct linux_cdrom_msf ll_msf;
  104                 struct linux_cdrom_ti ll_ti;
  105                 struct linux_cdrom_tochdr ll_tochdr;
  106                 struct linux_cdrom_tocentry ll_tocentry;
  107                 struct linux_cdrom_subchnl ll_subchnl;
  108                 struct linux_cdrom_volctrl ll_volctrl;
  109                 struct linux_cdrom_multisession ll_session;
  110                 dvd_struct ll_ds;
  111                 dvd_authinfo ll_dai;
  112         } *u1;
  113 
  114 #define l_blk u1->ll_blk
  115 #define l_msf u1->ll_msf
  116 #define l_ti u1->ll_ti
  117 #define l_tochdr u1->ll_tochdr
  118 #define l_tocentry u1->ll_tocentry
  119 #define l_subchnl u1->ll_subchnl
  120 #define l_volctrl u1->ll_volctrl
  121 #define l_session u1->ll_session
  122 #define ds u1->ll_ds
  123 #define dai u1->ll_dai
  124 
  125         union {
  126                 struct ioc_play_blocks tt_blocks;
  127                 struct ioc_play_msf tt_msf;
  128                 struct ioc_play_track tt_track;
  129                 struct ioc_toc_header tt_header;
  130                 struct ioc_read_toc_entry_buf tt_toc_entry;
  131                 struct ioc_read_subchannel_buf tt_subchannel;
  132                 struct ioc_vol tt_vol;
  133         } *u2;
  134 
  135 #define t_blocks u2->tt_blocks
  136 #define t_msf u2->tt_msf
  137 #define t_track u2->tt_track
  138 #define t_header u2->tt_header
  139 #define t_toc_entry u2->tt_toc_entry
  140 #define t_subchannel u2->tt_subchannel
  141 #define t_vol u2->tt_vol
  142 
  143         struct cd_toc_entry *entry;
  144 
  145         if ((fp = fd_getfile(SCARG(uap, fd))) == NULL)
  146                 return (EBADF);
  147 
  148         com = SCARG(uap, com);
  149         ioctlf = fp->f_ops->fo_ioctl;
  150         retval[0] = error = 0;
  151 
  152         u1 = malloc(sizeof(*u1), M_TEMP, M_WAITOK);
  153         u2 = malloc(sizeof(*u2), M_TEMP, M_WAITOK);
  154 
  155         switch(com) {
  156         case LINUX_CDROMPLAYMSF:
  157                 error = copyin(SCARG(uap, data), &l_msf, sizeof l_msf);
  158                 if (error)
  159                         break;
  160 
  161                 t_msf.start_m = l_msf.cdmsf_min0;
  162                 t_msf.start_s = l_msf.cdmsf_sec0;
  163                 t_msf.start_f = l_msf.cdmsf_frame0;
  164                 t_msf.end_m = l_msf.cdmsf_min1;
  165                 t_msf.end_s = l_msf.cdmsf_sec1;
  166                 t_msf.end_f = l_msf.cdmsf_frame1;
  167 
  168                 error = ioctlf(fp, CDIOCPLAYMSF, &t_msf);
  169                 break;
  170 
  171         case LINUX_CDROMPLAYTRKIND:
  172                 error = copyin(SCARG(uap, data), &l_ti, sizeof l_ti);
  173                 if (error)
  174                         break;
  175 
  176                 t_track.start_track = l_ti.cdti_trk0;
  177                 t_track.start_index = l_ti.cdti_ind0;
  178                 t_track.end_track = l_ti.cdti_trk1;
  179                 t_track.end_index = l_ti.cdti_ind1;
  180 
  181                 error = ioctlf(fp, CDIOCPLAYTRACKS, &t_track);
  182                 break;
  183 
  184         case LINUX_CDROMREADTOCHDR:
  185                 error = ioctlf(fp, CDIOREADTOCHEADER, &t_header);
  186                 if (error)
  187                         break;
  188 
  189                 memset(&l_tochdr, 0, sizeof(l_tochdr));
  190                 l_tochdr.cdth_trk0 = t_header.starting_track;
  191                 l_tochdr.cdth_trk1 = t_header.ending_track;
  192 
  193                 error = copyout(&l_tochdr, SCARG(uap, data), sizeof l_tochdr);
  194                 break;
  195 
  196         case LINUX_CDROMREADTOCENTRY:
  197                 error = copyin(SCARG(uap, data), &l_tocentry,
  198                                sizeof l_tocentry);
  199                 if (error)
  200                         break;
  201 
  202                 t_toc_entry.req.address_format = l_tocentry.cdte_format;
  203                 t_toc_entry.req.starting_track = l_tocentry.cdte_track;
  204                 t_toc_entry.req.data_len = sizeof *entry;
  205                 t_toc_entry.req.data = NULL;
  206 
  207                 error = ioctlf(fp, CDIOREADTOCENTRIES_BUF, &t_toc_entry);
  208                 if (error)
  209                         break;
  210 
  211                 l_tocentry.cdte_adr = t_toc_entry.entry[0].addr_type;
  212                 l_tocentry.cdte_ctrl = t_toc_entry.entry[0].control;
  213                 if (bsd_to_linux_msf_lba(t_toc_entry.entry[0].addr_type,
  214                     &t_toc_entry.entry[0].addr, &l_tocentry.cdte_addr) < 0) {
  215                         DPRINTF(("linux_ioctl: unknown format msf/lba\n"));
  216                         error = EINVAL;
  217                         break;
  218                 }
  219 
  220                 error = copyout(&l_tocentry, SCARG(uap, data),
  221                                sizeof l_tocentry);
  222                 break;
  223 
  224         case LINUX_CDROMVOLCTRL:
  225                 error = copyin(SCARG(uap, data), &l_volctrl, sizeof l_volctrl);
  226                 if (error)
  227                         break;
  228 
  229                 t_vol.vol[0] = l_volctrl.channel0;
  230                 t_vol.vol[1] = l_volctrl.channel1;
  231                 t_vol.vol[2] = l_volctrl.channel2;
  232                 t_vol.vol[3] = l_volctrl.channel3;
  233 
  234                 error = ioctlf(fp, CDIOCSETVOL, &t_vol);
  235                 break;
  236 
  237         case LINUX_CDROMVOLREAD:
  238                 error = ioctlf(fp, CDIOCGETVOL, &t_vol);
  239                 if (error)
  240                         break;
  241 
  242                 memset(&l_volctrl, 0, sizeof(l_volctrl));
  243                 l_volctrl.channel0 = t_vol.vol[0];
  244                 l_volctrl.channel1 = t_vol.vol[1];
  245                 l_volctrl.channel2 = t_vol.vol[2];
  246                 l_volctrl.channel3 = t_vol.vol[3];
  247 
  248                 error = copyout(&l_volctrl, SCARG(uap, data), sizeof l_volctrl);
  249                 break;
  250 
  251         case LINUX_CDROMSUBCHNL:
  252                 error = copyin(SCARG(uap, data), &l_subchnl, sizeof l_subchnl);
  253                 if (error)
  254                         break;
  255 
  256                 t_subchannel.req.address_format = CD_MSF_FORMAT;
  257                 t_subchannel.req.track = 0;
  258                 t_subchannel.req.data_format = l_subchnl.cdsc_format;
  259                 t_subchannel.req.data_len = sizeof t_subchannel.info;
  260                 t_subchannel.req.data = NULL;
  261                 DPRINTF(("linux_ioctl: CDROMSUBCHNL %d %d\n",
  262                          l_subchnl.cdsc_format, l_subchnl.cdsc_trk));
  263 
  264                 error = ioctlf(fp, CDIOCREADSUBCHANNEL_BUF, &t_subchannel);
  265                 if (error)
  266                         break;
  267 
  268                 l_subchnl.cdsc_audiostatus = t_subchannel.info.header.audio_status;
  269                 l_subchnl.cdsc_adr = t_subchannel.info.what.position.addr_type;
  270                 l_subchnl.cdsc_ctrl = t_subchannel.info.what.position.control;
  271                 l_subchnl.cdsc_ind = t_subchannel.info.what.position.index_number;
  272 
  273                 DPRINTF(("linux_ioctl: CDIOCREADSUBCHANNEL %d %d %d\n",
  274                         t_subchannel.info.header.audio_status,
  275                         t_subchannel.info.header.data_len[0],
  276                         t_subchannel.info.header.data_len[1]));
  277                 DPRINTF(("(more) %d %d %d %d %d\n",
  278                         t_subchannel.info.what.position.data_format,
  279                         t_subchannel.info.what.position.control,
  280                         t_subchannel.info.what.position.addr_type,
  281                         t_subchannel.info.what.position.track_number,
  282                         t_subchannel.info.what.position.index_number));
  283 
  284                 if (bsd_to_linux_msf_lba(t_subchannel.req.address_format,
  285                                      &t_subchannel.info.what.position.absaddr,
  286                                      &l_subchnl.cdsc_absaddr) < 0 ||
  287                     bsd_to_linux_msf_lba(t_subchannel.req.address_format,
  288                                      &t_subchannel.info.what.position.reladdr,
  289                                      &l_subchnl.cdsc_reladdr) < 0) {
  290                         DPRINTF(("linux_ioctl: unknown format msf/lba\n"));
  291                         error = EINVAL;
  292                         break;
  293                 }
  294 
  295                 error = copyout(&l_subchnl, SCARG(uap, data), sizeof l_subchnl);
  296                 break;
  297 
  298         case LINUX_CDROMPLAYBLK:
  299                 error = copyin(SCARG(uap, data), &l_blk, sizeof l_blk);
  300                 if (error)
  301                         break;
  302 
  303                 t_blocks.blk = l_blk.from;
  304                 t_blocks.len = l_blk.len;
  305 
  306                 error = ioctlf(fp, CDIOCPLAYBLOCKS, &t_blocks);
  307                 break;
  308 
  309         case LINUX_CDROMEJECT_SW:
  310                 error = copyin(SCARG(uap, data), &idata, sizeof idata);
  311                 if (error)
  312                         break;
  313 
  314                 if (idata == 1)
  315                         ncom = CDIOCALLOW;
  316                 else
  317                         ncom = CDIOCPREVENT;
  318                 error = ioctlf(fp, ncom, NULL);
  319                 break;
  320 
  321         case LINUX_CDROMPAUSE:
  322                 error = ioctlf(fp, CDIOCPAUSE, NULL);
  323                 break;
  324 
  325         case LINUX_CDROMRESUME:
  326                 error = ioctlf(fp, CDIOCRESUME, NULL);
  327                 break;
  328 
  329         case LINUX_CDROMSTOP:
  330                 error = ioctlf(fp, CDIOCSTOP, NULL);
  331                 break;
  332 
  333         case LINUX_CDROMSTART:
  334                 error = ioctlf(fp, CDIOCSTART, NULL);
  335                 break;
  336 
  337         case LINUX_CDROMEJECT:
  338                 error = ioctlf(fp, CDIOCEJECT, NULL);
  339                 break;
  340 
  341         case LINUX_CDROMRESET:
  342                 error = ioctlf(fp, CDIOCRESET, NULL);
  343                 break;
  344 
  345         case LINUX_CDROMMULTISESSION:
  346                 error = copyin(SCARG(uap, data), &l_session, sizeof l_session);
  347                 if (error)
  348                         break;
  349 
  350                 error = ioctlf(fp, CDIOREADTOCHEADER, &t_header);
  351                 if (error)
  352                         break;
  353 
  354                 t_toc_entry.req.address_format = l_session.addr_format;
  355                 t_toc_entry.req.starting_track = 0;
  356                 t_toc_entry.req.data_len = sizeof t_toc_entry.entry;
  357                 t_toc_entry.req.data = NULL;
  358 
  359                 error = ioctlf(fp, CDIOREADTOCENTRIES_BUF, &t_toc_entry);
  360                 if (error)
  361                         break;
  362 
  363                 if (bsd_to_linux_msf_lba(l_session.addr_format,
  364                     &t_toc_entry.entry[0].addr, &l_session.addr) < 0) {
  365                         error = EINVAL;
  366                         break;
  367                 }
  368 
  369                 l_session.xa_flag =
  370                     t_header.starting_track != t_header.ending_track;
  371 
  372                 error = copyout(&l_session, SCARG(uap, data), sizeof l_session);
  373                 break;
  374 
  375         case LINUX_CDROMCLOSETRAY:
  376                 error = ioctlf(fp, CDIOCCLOSE, NULL);
  377                 break;
  378 
  379         case LINUX_CDROM_LOCKDOOR:
  380                 ncom = SCARG(uap, data) != 0 ? CDIOCPREVENT : CDIOCALLOW;
  381                 error = ioctlf(fp, ncom, NULL);
  382                 break;
  383 
  384         case LINUX_CDROM_SET_OPTIONS:
  385         case LINUX_CDROM_CLEAR_OPTIONS:
  386                 /* whatever you say */
  387                 break;
  388 
  389         case LINUX_CDROM_DEBUG:
  390                 ncom = SCARG(uap, data) != 0 ? CDIOCSETDEBUG : CDIOCCLRDEBUG;
  391                 error = ioctlf(fp, ncom, NULL);
  392                 break;
  393 
  394         case LINUX_CDROM_SELECT_SPEED:
  395         case LINUX_CDROM_SELECT_DISC:
  396         case LINUX_CDROM_MEDIA_CHANGED:
  397         case LINUX_CDROM_DRIVE_STATUS:
  398         case LINUX_CDROM_DISC_STATUS:
  399         case LINUX_CDROM_CHANGER_NSLOTS:
  400         case LINUX_CDROM_GET_CAPABILITY:
  401                 error = ENOSYS;
  402                 break;
  403 
  404         case LINUX_DVD_READ_STRUCT:
  405                 error = copyin(SCARG(uap, data), &ds, sizeof ds);
  406                 if (error)
  407                         break;
  408                 error = ioctlf(fp, DVD_READ_STRUCT, &ds);
  409                 if (error)
  410                         break;
  411                 error = copyout(&ds, SCARG(uap, data), sizeof ds);
  412                 break;
  413 
  414         case LINUX_DVD_WRITE_STRUCT:
  415                 error = copyin(SCARG(uap, data), &ds, sizeof ds);
  416                 if (error)
  417                         break;
  418                 error = ioctlf(fp, DVD_WRITE_STRUCT, &ds);
  419                 if (error)
  420                         break;
  421                 error = copyout(&ds, SCARG(uap, data), sizeof ds);
  422                 break;
  423 
  424         case LINUX_DVD_AUTH:
  425                 error = copyin(SCARG(uap, data), &dai, sizeof dai);
  426                 if (error)
  427                         break;
  428                 error = ioctlf(fp, DVD_AUTH, &dai);
  429                 if (error)
  430                         break;
  431                 error = copyout(&dai, SCARG(uap, data), sizeof dai);
  432                 break;
  433 
  434 
  435         default:
  436                 DPRINTF(("linux_ioctl: unimplemented ioctl %08lx\n", com));
  437                 error = EINVAL;
  438         }
  439 
  440         fd_putfile(SCARG(uap, fd));
  441         free(u1, M_TEMP);
  442         free(u2, M_TEMP);
  443         return error;
  444 }
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FreeBSD/Linux Kernel Cross Reference sys/compat/linux/common/linux_cdrom.c

FreeBSD/Linux Kernel Cross Reference
sys/compat/linux/common/linux_cdrom.c
