diff options
Diffstat (limited to 'lib/libdvd/libdvdcss/src/bsdi_ioctl.c')
| -rw-r--r-- | lib/libdvd/libdvdcss/src/bsdi_ioctl.c | 770 |
1 files changed, 0 insertions, 770 deletions
diff --git a/lib/libdvd/libdvdcss/src/bsdi_ioctl.c b/lib/libdvd/libdvdcss/src/bsdi_ioctl.c deleted file mode 100644 index ef4c56c30e..0000000000 --- a/lib/libdvd/libdvdcss/src/bsdi_ioctl.c +++ /dev/null @@ -1,770 +0,0 @@ -#include "config.h" - -/* - * Hacked version of the linux cdrom.c kernel module - everything except the - * DVD handling ripped out and the rest rewritten to use raw SCSI commands - * on BSD/OS 4.2 (but should work with earlier versions as well). -*/ - -#include <sys/types.h> -#include <stdlib.h> -#include <stdio.h> -#include <errno.h> -#include <unistd.h> -#include <sys/ioctl.h> -#include </sys/dev/scsi/scsi.h> -#include </sys/dev/scsi/scsi_ioctl.h> - -#include "bsdi_dvd.h" - -/* - * Now get rid of the override/intercept macro so we can call the real ioctl() - * routine! -*/ -#undef ioctl - -#define CMD_READ_10 0x28 -#define CMD_READ_TOC_PMA_ATIP 0x43 -#define CMD_READ_CD 0xbe -#define CMD_START_STOP_UNIT 0x1b - -#define CMD_SEND_KEY 0xa3 -#define CMD_REPORT_KEY 0xa4 -#define CMD_READ_DVD_STRUCTURE 0xad - -#define copy_key(dest,src) memcpy((dest), (src), sizeof(dvd_key)) -#define copy_chal(dest,src) memcpy((dest), (src), sizeof(dvd_challenge)) - -/* Define the Cdrom Generic Command structure */ -typedef struct cgc - { - u_char cdb[12]; - u_char *buf; - int buflen; - int rw; - int timeout; - scsi_user_sense_t *sus; - } cgc_t; - -static int scsi_cmd(int, cgc_t *); -static int cdrom_ioctl(int, u_long, void *); -static int cdrom_tray_move(int, int); -static void cdrom_count_tracks(int, tracktype *); -static int dvd_ioctl(int, u_long, void *); -static int debug = 0; - -void dvd_cdrom_debug(int flag) - { - debug = flag; - } - -/* - * This is the published entry point. Actually applications should simply - * include <dvd.h> and not refer to this at all. -*/ -int dvd_cdrom_ioctl(int fd, unsigned long cmd, void *arg) - { - switch (cmd) - { - case DVD_AUTH: - case DVD_READ_STRUCT: - return(dvd_ioctl(fd, cmd, arg)); - case CDROMREADTOCHDR: - case CDROMREADTOCENTRY: - case CDROMEJECT: - case CDROMREADRAW: - case CDROMREADMODE1: - case CDROMREADMODE2: - case CDROMCLOSETRAY: - case CDROM_DRIVE_STATUS: - case CDROM_DISC_STATUS: - return(cdrom_ioctl(fd, cmd, arg)); - default: - return(ioctl(fd, cmd, arg)); - } - } - -static void setup_report_key(cgc_t *cgc, u_int agid, u_int type) - { - - cgc->cdb[0] = CMD_REPORT_KEY; - cgc->cdb[10] = type | (agid << 6); - switch (type) - { - case 0: - case 5: - case 8: - cgc->buflen = 8; - break; - case 1: - cgc->buflen = 16; - break; - case 2: - case 4: - cgc->buflen = 12; - break; - } - cgc->cdb[9] = cgc->buflen; - cgc->rw = SUC_READ;; - } - -static void setup_send_key(cgc_t *cgc, u_int agid, u_int type) - { - - cgc->cdb[0] = CMD_SEND_KEY; - cgc->cdb[10] = type | (agid << 6); - switch (type) - { - case 1: - cgc->buflen = 16; - break; - case 3: - cgc->buflen = 12; - break; - case 6: - cgc->buflen = 8; - break; - } - cgc->cdb[9] = cgc->buflen; - cgc->rw = SUC_WRITE; - } - -static void cgc_init(cgc_t *cgc, void *buf, int len, int type) - { - - memset(cgc, 0, sizeof (*cgc)); - if (buf) - memset(buf, 0, len); - cgc->buf = (u_char *)buf; - cgc->buflen = len; - cgc->rw = type; - cgc->timeout = 5; /* 5 second timeout */ - } - -static int dvd_do_auth(int fd, dvd_authinfo *ai) - { - int ret; - u_char buf[20]; - cgc_t cgc; - rpc_state_t rpc_state; - - memset(buf, 0, sizeof(buf)); - cgc_init(&cgc, buf, 0, SUC_READ); - - switch (ai->type) - { - case DVD_LU_SEND_AGID: /* LU data send */ - setup_report_key(&cgc, ai->lsa.agid, 0); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - ai->lsa.agid = buf[7] >> 6; - break; - case DVD_LU_SEND_KEY1: - setup_report_key(&cgc, ai->lsk.agid, 2); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - copy_key(ai->lsk.key, &buf[4]); - break; - case DVD_LU_SEND_CHALLENGE: - setup_report_key(&cgc, ai->lsc.agid, 1); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - copy_chal(ai->lsc.chal, &buf[4]); - break; - case DVD_LU_SEND_TITLE_KEY: /* Post-auth key */ - setup_report_key(&cgc, ai->lstk.agid, 4); - cgc.cdb[5] = ai->lstk.lba; - cgc.cdb[4] = ai->lstk.lba >> 8; - cgc.cdb[3] = ai->lstk.lba >> 16; - cgc.cdb[2] = ai->lstk.lba >> 24; - if (ret = scsi_cmd(fd, &cgc)) - return ret; - ai->lstk.cpm = (buf[4] >> 7) & 1; - ai->lstk.cp_sec = (buf[4] >> 6) & 1; - ai->lstk.cgms = (buf[4] >> 4) & 3; - copy_key(ai->lstk.title_key, &buf[5]); - break; - case DVD_LU_SEND_ASF: - setup_report_key(&cgc, ai->lsasf.agid, 5); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - ai->lsasf.asf = buf[7] & 1; - break; - case DVD_HOST_SEND_CHALLENGE: /* LU data receive (LU changes state) */ - setup_send_key(&cgc, ai->hsc.agid, 1); - buf[1] = 0xe; - copy_chal(&buf[4], ai->hsc.chal); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - ai->type = DVD_LU_SEND_KEY1; - break; - case DVD_HOST_SEND_KEY2: - setup_send_key(&cgc, ai->hsk.agid, 3); - buf[1] = 0xa; - copy_key(&buf[4], ai->hsk.key); - if (ret = scsi_cmd(fd, &cgc)) - { - ai->type = DVD_AUTH_FAILURE; - return ret; - } - ai->type = DVD_AUTH_ESTABLISHED; - break; - case DVD_INVALIDATE_AGID: - setup_report_key(&cgc, ai->lsa.agid, 0x3f); - if (ret = scsi_cmd(fd, &cgc)) - return ret; - break; - case DVD_LU_SEND_RPC_STATE: /* Get region settings */ - setup_report_key(&cgc, 0, 8); - memset(&rpc_state, 0, sizeof(rpc_state_t)); - cgc.buf = (char *) &rpc_state; - if (ret = scsi_cmd(fd, &cgc)) - { - ai->lrpcs.type = 0; - ai->lrpcs.rpc_scheme = 0; - } - else - { - ai->lrpcs.type = rpc_state.type_code; - ai->lrpcs.vra = rpc_state.vra; - ai->lrpcs.ucca = rpc_state.ucca; - ai->lrpcs.region_mask = rpc_state.region_mask; - ai->lrpcs.rpc_scheme = rpc_state.rpc_scheme; - } - break; - case DVD_HOST_SEND_RPC_STATE: /* Set region settings */ - setup_send_key(&cgc, 0, 6); - buf[1] = 6; - buf[4] = ai->hrpcs.pdrc; - if (ret = scsi_cmd(fd, &cgc)) - return ret; - break; - default: - return EINVAL; - } - return 0; - } - -static int dvd_read_physical(int fd, dvd_struct *s) - { - int ret, i; - u_char buf[4 + 4 * 20], *base; - struct dvd_layer *layer; - cgc_t cgc; - - cgc_init(&cgc, buf, sizeof(buf), SUC_READ); - cgc.cdb[0] = CMD_READ_DVD_STRUCTURE; - cgc.cdb[6] = s->physical.layer_num; - cgc.cdb[7] = s->type; - cgc.cdb[9] = cgc.buflen & 0xff; - - if (ret = scsi_cmd(fd, &cgc)) - return ret; - - base = &buf[4]; - layer = &s->physical.layer[0]; - - /* place the data... really ugly, but at least we won't have to - worry about endianess in userspace or here. */ - for (i = 0; i < 4; ++i, base += 20, ++layer) - { - memset(layer, 0, sizeof(*layer)); - layer->book_version = base[0] & 0xf; - layer->book_type = base[0] >> 4; - layer->min_rate = base[1] & 0xf; - layer->disc_size = base[1] >> 4; - layer->layer_type = base[2] & 0xf; - layer->track_path = (base[2] >> 4) & 1; - layer->nlayers = (base[2] >> 5) & 3; - layer->track_density = base[3] & 0xf; - layer->linear_density = base[3] >> 4; - layer->start_sector = base[5] << 16 | base[6] << 8 | base[7]; - layer->end_sector = base[9] << 16 | base[10] << 8 | base[11]; - layer->end_sector_l0 = base[13] << 16 | base[14] << 8 | base[15]; - layer->bca = base[16] >> 7; - } - return 0; - } - -static int dvd_read_copyright(int fd, dvd_struct *s) - { - int ret; - u_char buf[8]; - cgc_t cgc; - - cgc_init(&cgc, buf, sizeof(buf), SUC_READ); - cgc.cdb[0] = CMD_READ_DVD_STRUCTURE; - cgc.cdb[6] = s->copyright.layer_num; - cgc.cdb[7] = s->type; - cgc.cdb[8] = cgc.buflen >> 8; - cgc.cdb[9] = cgc.buflen & 0xff; - - if (ret = scsi_cmd(fd, &cgc)) - return ret; - s->copyright.cpst = buf[4]; - s->copyright.rmi = buf[5]; - return 0; - } - -static int dvd_read_disckey(int fd, dvd_struct *s) - { - int ret, size; - u_char *buf; - cgc_t cgc; - - size = sizeof(s->disckey.value) + 4; - - if ((buf = (u_char *) malloc(size)) == NULL) - return ENOMEM; - - cgc_init(&cgc, buf, size, SUC_READ); - cgc.cdb[0] = CMD_READ_DVD_STRUCTURE; - cgc.cdb[7] = s->type; - cgc.cdb[8] = size >> 8; - cgc.cdb[9] = size & 0xff; - cgc.cdb[10] = s->disckey.agid << 6; - - if (!(ret = scsi_cmd(fd, &cgc))) - memcpy(s->disckey.value, &buf[4], sizeof(s->disckey.value)); - free(buf); - return ret; - } - -static int dvd_read_bca(int fd, dvd_struct *s) - { - int ret; - u_char buf[4 + 188]; - cgc_t cgc; - - cgc_init(&cgc, buf, sizeof(buf), SUC_READ); - cgc.cdb[0] = CMD_READ_DVD_STRUCTURE; - cgc.cdb[7] = s->type; - cgc.cdb[9] = cgc.buflen = 0xff; - - if (ret = scsi_cmd(fd, &cgc)) - return ret; - s->bca.len = buf[0] << 8 | buf[1]; - if (s->bca.len < 12 || s->bca.len > 188) - return EIO; - memcpy(s->bca.value, &buf[4], s->bca.len); - return 0; - } - -static int dvd_read_manufact(int fd, dvd_struct *s) - { - int ret = 0, size; - u_char *buf; - cgc_t cgc; - - size = sizeof(s->manufact.value) + 4; - - if ((buf = (u_char *) malloc(size)) == NULL) - return ENOMEM; - - cgc_init(&cgc, buf, size, SUC_READ); - cgc.cdb[0] = CMD_READ_DVD_STRUCTURE; - cgc.cdb[7] = s->type; - cgc.cdb[8] = size >> 8; - cgc.cdb[9] = size & 0xff; - - if (ret = scsi_cmd(fd, &cgc)) - { - free(buf); - return ret; - } - s->manufact.len = buf[0] << 8 | buf[1]; - if (s->manufact.len < 0 || s->manufact.len > 2048) - ret = -EIO; - else - memcpy(s->manufact.value, &buf[4], s->manufact.len); - free(buf); - return ret; - } - -static int dvd_read_struct(int fd, dvd_struct *s) - { - switch (s->type) - { - case DVD_STRUCT_PHYSICAL: - return dvd_read_physical(fd, s); - case DVD_STRUCT_COPYRIGHT: - return dvd_read_copyright(fd, s); - case DVD_STRUCT_DISCKEY: - return dvd_read_disckey(fd, s); - case DVD_STRUCT_BCA: - return dvd_read_bca(fd, s); - case DVD_STRUCT_MANUFACT: - return dvd_read_manufact(fd, s); - default: - return EINVAL; - } - } - -static u_char scsi_cdblen[8] = {6, 10, 10, 12, 12, 12, 10, 10}; - -static int scsi_cmd(int fd, cgc_t *cgc) - { - int i, scsistatus, cdblen; - unsigned char *cp; - struct scsi_user_cdb suc; - - /* safety checks */ - if (cgc->rw != SUC_READ && cgc->rw != SUC_WRITE) - return(EINVAL); - - suc.suc_flags = cgc->rw; - cdblen = scsi_cdblen[(cgc->cdb[0] >> 5) & 7]; - suc.suc_cdblen = cdblen; - bcopy(cgc->cdb, suc.suc_cdb, cdblen); - suc.suc_data = cgc->buf; - suc.suc_datalen = cgc->buflen; - suc.suc_timeout = cgc->timeout; - if (ioctl(fd, SCSIRAWCDB, &suc) == -1) - return(errno); - scsistatus = suc.suc_sus.sus_status; - -/* - * If the device returns a scsi sense error and debugging is enabled print - * some hopefully useful information on stderr. -*/ - if (scsistatus && debug) - { - cp = suc.suc_sus.sus_sense; - fprintf(stderr,"scsistatus = %x cdb =", - scsistatus); - for (i = 0; i < cdblen; i++) - fprintf(stderr, " %x", cgc->cdb[i]); - fprintf(stderr, "\nsense ="); - for (i = 0; i < 16; i++) - fprintf(stderr, " %x", cp[i]); - fprintf(stderr, "\n"); - } - if (cgc->sus) - bcopy(&suc.suc_sus, cgc->sus, sizeof (struct scsi_user_sense)); - if (scsistatus) - return(EIO); /* generic i/o error for unsuccessful status */ - return(0); - } - -/* - * The entry point for the DVDioctls for BSD/OS. -*/ -static int dvd_ioctl(int fd, u_long cmd, void *arg) - { - int ret; - - switch (cmd) - { - case DVD_READ_STRUCT: - ret = dvd_read_struct(fd, (dvd_struct *)arg); - if (ret) - errno = ret; - return(ret ? -1 : 0); - case DVD_AUTH: - ret = dvd_do_auth(fd, (dvd_authinfo *)arg); - if (ret) - errno = ret; - return(ret ? -1 : 0); - default: - errno = EINVAL; - return(-1); - } - } - -/* - * The entry point for the CDROMioctls for BSD/OS -*/ -static int cdrom_read_block(int, cgc_t *, int, int, int, int); -static int cdrom_read_cd(int, cgc_t *, int, int, int ); - int cdrom_blocksize(int, int ); - -static inline -int msf_to_lba(char m, char s, char f) -{ - return (((m * CD_SECS) + s) * CD_FRAMES + f) - CD_MSF_OFFSET; -} - -cdrom_ioctl(int fd, u_long cmd, void *arg) - { - int ret; - cgc_t cgc; - - switch (cmd) - { - case CDROMREADRAW: - case CDROMREADMODE1: - case CDROMREADMODE2: - { - struct cdrom_msf *msf; - int blocksize = 0, format = 0, lba; - - switch (cmd) - { - case CDROMREADRAW: - blocksize = CD_FRAMESIZE_RAW; - break; - case CDROMREADMODE1: - blocksize = CD_FRAMESIZE; - format = 2; - break; - case CDROMREADMODE2: - blocksize = CD_FRAMESIZE_RAW0; - break; - } - msf = (struct cdrom_msf *)arg; - lba = msf_to_lba(msf->cdmsf_min0,msf->cdmsf_sec0, - msf->cdmsf_frame0); - ret = EINVAL; - if (lba < 0) - break; - - cgc_init(&cgc, arg, blocksize, SUC_READ); - ret = cdrom_read_block(fd, &cgc, lba, 1, format, blocksize); - if (ret) - { -/* - * SCSI-II devices are not required to support CMD_READ_CD (which specifies - * the blocksize to read) so try switching the block size with a mode select, - * doing the normal read sector command and then changing the sector size back - * to 2048. - * - * If the program dies before changing the blocksize back sdopen() - * in the kernel will fail opens with a message that looks something like: - * - * "sr1: blksize 2336 not multiple of 512: cannot use" - * - * At that point the drive has to be power cycled (or reset in some other way). -*/ - if (ret = cdrom_blocksize(fd, blocksize)) - break; - ret = cdrom_read_cd(fd, &cgc, lba, blocksize, 1); - ret |= cdrom_blocksize(fd, 2048); - } - break; - } - case CDROMREADTOCHDR: - { - struct cdrom_tochdr *tochdr = (struct cdrom_tochdr *) arg; - u_char buffer[12]; - - cgc_init(&cgc, buffer, sizeof (buffer), SUC_READ); - cgc.cdb[0] = CMD_READ_TOC_PMA_ATIP; - cgc.cdb[1] = 0x2; /* MSF */ - cgc.cdb[8] = 12; /* LSB of length */ - - ret = scsi_cmd(fd, &cgc); - if (!ret) - { - tochdr->cdth_trk0 = buffer[2]; - tochdr->cdth_trk1 = buffer[3]; - } - break; - } - case CDROMREADTOCENTRY: - { - struct cdrom_tocentry *tocentry = (struct cdrom_tocentry *) arg; - u_char buffer[12]; - - cgc_init(&cgc, buffer, sizeof (buffer), SUC_READ); - cgc.cdb[0] = CMD_READ_TOC_PMA_ATIP; - cgc.cdb[1] = (tocentry->cdte_format == CDROM_MSF) ? 0x02 : 0; - cgc.cdb[6] = tocentry->cdte_track; - cgc.cdb[8] = 12; /* LSB of length */ - - ret = scsi_cmd(fd, &cgc); - if (ret) - break; - - tocentry->cdte_ctrl = buffer[5] & 0xf; - tocentry->cdte_adr = buffer[5] >> 4; - tocentry->cdte_datamode = (tocentry->cdte_ctrl & 0x04) ? 1 : 0; - if (tocentry->cdte_format == CDROM_MSF) - { - tocentry->cdte_addr.msf.minute = buffer[9]; - tocentry->cdte_addr.msf.second = buffer[10]; - tocentry->cdte_addr.msf.frame = buffer[11]; - } - else - tocentry->cdte_addr.lba = (((((buffer[8] << 8) - + buffer[9]) << 8) - + buffer[10]) << 8) - + buffer[11]; - break; - } - case CDROMEJECT: /* NO-OP for now */ - ret = cdrom_tray_move(fd, 1); - break; - case CDROMCLOSETRAY: - ret = cdrom_tray_move(fd, 0); - break; -/* - * This sucks but emulates the expected behaviour. Instead of the return - * value being the actual status a success/fail indicator should have been - * returned and the 3rd arg to the ioctl should have been an 'int *' to update - * with the actual status. Both the drive and disc status ioctl calls are - * similarily braindamaged. -*/ - case CDROM_DRIVE_STATUS: - return(CDS_NO_INFO); /* XXX */ - case CDROM_DISC_STATUS: - { - tracktype tracks; - int cnt; - - cdrom_count_tracks(fd, &tracks); - if (tracks.error) - return(tracks.error); - if (tracks.audio > 0) - { - cnt = tracks.data + tracks.cdi + tracks.xa; - if (cnt == 0) - return(CDS_AUDIO); - else - return(CDS_MIXED); - } - if (tracks.cdi) - return(CDS_XA_2_2); - if (tracks.xa) - return(CDS_XA_2_1); - if (tracks.data) - return(CDS_DATA_1); - return(CDS_NO_INFO); - } - } - errno = ret; - return(ret ? -1 : 0); - } - -static int cdrom_read_cd(int fd, cgc_t *cgc, int lba, int blocksize, int nblocks) - { - - memset(&cgc->cdb, 0, sizeof(cgc->cdb)); - cgc->cdb[0] = CMD_READ_10; - cgc->cdb[2] = (lba >> 24) & 0xff; - cgc->cdb[3] = (lba >> 16) & 0xff; - cgc->cdb[4] = (lba >> 8) & 0xff; - cgc->cdb[5] = lba & 0xff; - cgc->cdb[6] = (nblocks >> 16) & 0xff; - cgc->cdb[7] = (nblocks >> 8) & 0xff; - cgc->cdb[8] = nblocks & 0xff; - cgc->buflen = blocksize * nblocks; - return(scsi_cmd(fd, cgc)); - } - -static int cdrom_read_block(int fd, cgc_t *cgc, - int lba, int nblocks, int format, int blksize) - { - - memset(&cgc->cdb, 0, sizeof(cgc->cdb)); - cgc->cdb[0] = CMD_READ_CD; - /* expected sector size - cdda,mode1,etc. */ - cgc->cdb[1] = format << 2; - /* starting address */ - cgc->cdb[2] = (lba >> 24) & 0xff; - cgc->cdb[3] = (lba >> 16) & 0xff; - cgc->cdb[4] = (lba >> 8) & 0xff; - cgc->cdb[5] = lba & 0xff; - /* number of blocks */ - cgc->cdb[6] = (nblocks >> 16) & 0xff; - cgc->cdb[7] = (nblocks >> 8) & 0xff; - cgc->cdb[8] = nblocks & 0xff; - cgc->buflen = blksize * nblocks; - - /* set the header info returned */ - switch (blksize) - { - case CD_FRAMESIZE_RAW0: - cgc->cdb[9] = 0x58; - break; - case CD_FRAMESIZE_RAW1: - cgc->cdb[9] = 0x78; - break; - case CD_FRAMESIZE_RAW: - cgc->cdb[9] = 0xf8; - break; - default: - cgc->cdb[9] = 0x10; - } - return(scsi_cmd(fd, cgc)); - } - -static void cdrom_count_tracks(int fd, tracktype *tracks) - { - struct cdrom_tochdr header; - struct cdrom_tocentry entry; - int ret, i; - - memset(tracks, 0, sizeof (*tracks)); - ret = cdrom_ioctl(fd, CDROMREADTOCHDR, &header); -/* - * This whole business is a crock anyhow so we don't bother distinguishing - * between no media, drive not ready, etc and on any error just say we have - * no info. -*/ - if (ret) - { - tracks->error = CDS_NO_INFO; - return; - } - - entry.cdte_format = CDROM_MSF; - for (i = header.cdth_trk0; i <= header.cdth_trk1; i++) - { - entry.cdte_track = i; - if (cdrom_ioctl(fd, CDROMREADTOCENTRY, &entry)) - { - tracks->error = CDS_NO_INFO; - return; - } - if (entry.cdte_ctrl & CDROM_DATA_TRACK) - { - if (entry.cdte_format == 0x10) - tracks->cdi++; - else if (entry.cdte_format == 0x20) - tracks->xa++; - else - tracks->data++; - } - else - tracks->audio++; - } - return; - } - -static int cdrom_tray_move(int fd, int flag) - { - cgc_t cgc; - - cgc_init(&cgc, NULL, 0, SUC_READ); - cgc.cdb[0] = CMD_START_STOP_UNIT; - cgc.cdb[1] = 1; /* immediate */ - cgc.cdb[4] = flag ? 0x2 : 0x3; /* eject : close */ - return(scsi_cmd(fd, &cgc)); - } - -/* - * Required when we need to use READ_10 to issue other than 2048 block - * reads - */ -int cdrom_blocksize(int fd, int size) - { - cgc_t cgc; - struct modesel_head mh; - - memset(&mh, 0, sizeof(mh)); - mh.block_desc_length = 0x08; - mh.block_length_med = (size >> 8) & 0xff; - mh.block_length_lo = size & 0xff; - - memset(&cgc, 0, sizeof(cgc)); - cgc.cdb[0] = 0x15; - cgc.cdb[1] = 1 << 4; - cgc.cdb[4] = 12; - cgc.buflen = sizeof(mh); - cgc.buf = (u_char *) &mh; - cgc.rw = SUC_WRITE; - mh.block_desc_length = 0x08; - mh.block_length_med = (size >> 8) & 0xff; - mh.block_length_lo = size & 0xff; - return(scsi_cmd(fd, &cgc)); - } |