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1 /* eject.c - eject device.
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2 *
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3 * Copyright 2012 Harvind Singh <harvindsingh1981@gmail.com>
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4 * Copyright 2013 Kyungwan Han <asura321@gamil.com>
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5 *
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6 * No standard.
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7
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8 USE_EJECT(NEWTOY(eject, ">1stT[!tT]", TOYFLAG_USR|TOYFLAG_BIN))
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9
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10 config EJECT
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11 bool "eject"
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12 default y
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13 help
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14 usage: eject [-stT] [DEVICE]
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15
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16 Eject DEVICE or default /dev/cdrom
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17
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18 -s SCSI device
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19 -t Close tray
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20 -T Open/close tray (toggle).
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21 */
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22
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23 #define FOR_eject
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24 #include "toys.h"
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25 #include <scsi/sg.h>
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26 #include <scsi/scsi.h>
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27
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28 // The SCSI way of requesting eject
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29 static void remove_scsi(int fd)
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30 {
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31 unsigned i;
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32 sg_io_hdr_t *header = (sg_io_hdr_t *)(toybuf+64);
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33 char sg_driver_cmd[3][6] = {
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34 { ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0 },
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35 { START_STOP, 0, 0, 0, 1, 0 }, //start the motor
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36 { START_STOP, 0, 0, 0, 2, 0 } //eject the media
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37 };
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38
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39 header->interface_id = 'S';
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40 header->cmd_len = 6;
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41 header->mx_sb_len = 32;
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42 header->dxfer_direction = SG_DXFER_NONE;
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43 header->dxferp = toybuf + 32;
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44 header->sbp = (void *)toybuf;
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45 header->timeout = 2000;
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46
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47 for (i = 0; i < 3; i++) {
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48 header->cmdp = (void *)sg_driver_cmd[i];
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49 xioctl(fd, SG_IO, (void *)header);
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50 }
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51
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52 // force kernel to reread partition table when new disc is inserted
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53 ioctl(fd, BLKRRPART);
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54 }
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55
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56 /*
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57 * eject main function.
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58 */
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59 void eject_main(void)
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60 {
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61 int fd, out = 0;
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62 char *device_name = "/dev/cdrom";
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63
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64 if (*toys.optargs) device_name = *toys.optargs;
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65
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66 fd = xopen(device_name, O_RDONLY | O_NONBLOCK);
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67 if (!toys.optflags) xioctl(fd, 0x5309, &out); // CDROM_EJECT
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68 else if (toys.optflags & FLAG_s) remove_scsi(fd);
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69 else {
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70 if ((toys.optflags & FLAG_T) || (toys.optflags & FLAG_t)) {
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71 int rc = ioctl(fd, 0x5326, &out); // CDROM_DRIVE_STATUS
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72 if ((toys.optflags & FLAG_t) || rc == 2) // CDS_TRAY_OPEN
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73 xioctl(fd, 0x5319, &out); // CDROM_CLOSE_TRAY
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74 else xioctl(fd, 0x5309, &out); // CDROM_EJECT
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75 }
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76 }
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77 if (CFG_TOYBOX_FREE) xclose(fd);
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78 }
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