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authorRob Landley <rob@landley.net>2013-07-11 18:02:54 -0500
committerRob Landley <rob@landley.net>2013-07-11 18:02:54 -0500
commit4ae257edfb0ce0252906130dad151a2fbcac2e62 (patch)
tree2d0579222c22a95fecf07d63f880c9af56e3db06 /toys/other
parenta2168e74516c41a6c6f0a22f9bffce4578c9c546 (diff)
downloadtoybox-4ae257edfb0ce0252906130dad151a2fbcac2e62.tar.gz
Eject, by Kyungwan Han.
Diffstat (limited to 'toys/other')
-rw-r--r--toys/other/eject.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/toys/other/eject.c b/toys/other/eject.c
new file mode 100644
index 00000000..279f7a31
--- /dev/null
+++ b/toys/other/eject.c
@@ -0,0 +1,89 @@
+/* eject.c - eject device.
+ *
+ * Copyright 2012 Harvind Singh <harvindsingh1981@gmail.com>
+ * Copyright 2013 Kyungwan Han <asura321@gamil.com>
+ * Not in SUSv4.
+
+USE_EJECT(NEWTOY(eject, ">1stT[!tT]", TOYFLAG_USR|TOYFLAG_BIN))
+
+config EJECT
+ bool "eject"
+ default y
+ help
+ usage: eject [-s] [-t] [-T] [...]
+
+ Eject DEVICE or default /dev/cdrom
+
+ -s SCSI device
+ -t Close tray
+ -T Open/close tray (toggle).
+*/
+
+#define FOR_eject
+#include "toys.h"
+#include <scsi/sg.h>
+#include <scsi/scsi.h>
+
+#define CDROM_DRIVE_STATUS 0x5326 //Get tray position, etc.
+#define CDROM_CLOSE_TRAY 0x5319 //Pendant of CDROM_EJECT.
+#define CDROM_EJECT 0x5309 //Ejects the cdrom media.
+#define DRIVE_NOT_READY 3 //Drive is busy.
+
+/*
+ * Remove SCSI Device.
+ */
+static void remove_scsi(int dscptr)
+{
+ char sg_driver_cmd[3][6] = {
+ { ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0 }, //allow medium removal
+ { START_STOP, 0, 0, 0, 1, 0 }, //start the motor
+ { START_STOP, 0, 0, 0, 2, 0 } //eject the media
+ };
+
+ unsigned i;
+ unsigned char buffer1[32],buffer2[2];
+ sg_io_hdr_t in_out_header;
+
+ if ((ioctl(dscptr, SG_GET_VERSION_NUM, &i) < 0) || (i < 30000))
+ error_exit("not a sg device or old sg driver");
+
+ memset(&in_out_header, 0, sizeof(sg_io_hdr_t));
+ in_out_header.interface_id = 'S';
+ in_out_header.cmd_len = 6;
+ in_out_header.mx_sb_len = sizeof(buffer1);
+ in_out_header.dxfer_direction = SG_DXFER_NONE;
+ in_out_header.dxferp = buffer2;
+ in_out_header.sbp = buffer1;
+ in_out_header.timeout = 2000;
+
+ for (i = 0; i < 3; i++) {
+ in_out_header.cmdp = (void *)sg_driver_cmd[i];
+ xioctl(dscptr, SG_IO, (void *)&in_out_header);
+ }
+ /* force kernel to reread partition table when new disc is inserted */
+ ioctl(dscptr, BLKRRPART);
+}
+
+/*
+ * eject main function.
+ */
+void eject_main(void)
+{
+ int fd, out = 0, rc = 0;
+ char *device_name;
+ if (!toys.optc) device_name = "/dev/cdrom";
+ else device_name = toys.optargs[0];
+
+ fd = xopen(device_name, O_RDONLY | O_NONBLOCK);
+ if (!toys.optflags) xioctl(fd, CDROM_EJECT, &out);
+ else if (toys.optflags & FLAG_s) remove_scsi(fd);
+ else {
+ if (toys.optflags & FLAG_T || toys.optflags & FLAG_t) {
+ rc = ioctl(fd, CDROM_DRIVE_STATUS, &out);
+ if (toys.optflags & FLAG_t || rc == 2) //CDS_TRAY_OPEN = 2
+ xioctl(fd, CDROM_CLOSE_TRAY, &out);
+ else xioctl(fd, CDROM_EJECT, &out);
+ }
+ }
+ xclose(fd);
+}