1 /* eject.c - eject device.
2 *
3 * Copyright 2012 Harvind Singh <harvindsingh1981@gmail.com>
4 * Copyright 2013 Kyungwan Han <asura321@gamil.com>
5 *
6 * No standard.
7
8 USE_EJECT(NEWTOY(eject, ">1stT[!tT]", TOYFLAG_USR|TOYFLAG_BIN))
9
10 config EJECT
11 bool "eject"
12 default y
13 help
14 usage: eject [-stT] [DEVICE]
15
16 Eject DEVICE or default /dev/cdrom
17
18 -s SCSI device
19 -t Close tray
20 -T Open/close tray (toggle).
21 */
22
23 #define FOR_eject
24 #include "toys.h"
25 #include <scsi/sg.h>
26 #include <scsi/scsi.h>
27
28 // The SCSI way of requesting eject
remove_scsi(int fd)29 static void remove_scsi(int fd)
30 {
31 unsigned i;
32 sg_io_hdr_t *header = (sg_io_hdr_t *)(toybuf+64);
33 char sg_driver_cmd[3][6] = {
34 { ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0 },
35 { START_STOP, 0, 0, 0, 1, 0 }, //start the motor
36 { START_STOP, 0, 0, 0, 2, 0 } //eject the media
37 };
38
39 header->interface_id = 'S';
40 header->cmd_len = 6;
41 header->mx_sb_len = 32;
42 header->dxfer_direction = SG_DXFER_NONE;
43 header->dxferp = toybuf + 32;
44 header->sbp = (void *)toybuf;
45 header->timeout = 2000;
46
47 for (i = 0; i < 3; i++) {
48 header->cmdp = (void *)sg_driver_cmd[i];
49 xioctl(fd, SG_IO, (void *)header);
50 }
51
52 // force kernel to reread partition table when new disc is inserted
53 ioctl(fd, BLKRRPART);
54 }
55
56 /*
57 * eject main function.
58 */
eject_main(void)59 void eject_main(void)
60 {
61 int fd, out = 0;
62 char *device_name = "/dev/cdrom";
63
64 if (*toys.optargs) device_name = *toys.optargs;
65
66 fd = xopen(device_name, O_RDONLY | O_NONBLOCK);
67 if (!toys.optflags) xioctl(fd, 0x5309, &out); // CDROM_EJECT
68 else if (toys.optflags & FLAG_s) remove_scsi(fd);
69 else {
70 if ((toys.optflags & FLAG_T) || (toys.optflags & FLAG_t)) {
71 int rc = ioctl(fd, 0x5326, &out); // CDROM_DRIVE_STATUS
72 if ((toys.optflags & FLAG_t) || rc == 2) // CDS_TRAY_OPEN
73 xioctl(fd, 0x5319, &out); // CDROM_CLOSE_TRAY
74 else xioctl(fd, 0x5309, &out); // CDROM_EJECT
75 }
76 }
77 if (CFG_TOYBOX_FREE) xclose(fd);
78 }
79