* Copyright (C) 2004 Peter Willis <psyphreak@phreaker.net>
* Copyright (C) 2005 Tito Ragusa <farmatito@tiscali.it>
*
- * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
+ * Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/*
* Most of the dirty work blatantly ripped off from cat.c =)
*/
+//usage:#define eject_trivial_usage
+//usage: "[-t] [-T] [DEVICE]"
+//usage:#define eject_full_usage "\n\n"
+//usage: "Eject DEVICE or default /dev/cdrom\n"
+//usage: IF_FEATURE_EJECT_SCSI(
+//usage: "\n -s SCSI device"
+//usage: )
+//usage: "\n -t Close tray"
+//usage: "\n -T Open/close tray (toggle)"
+
+#include <sys/mount.h>
#include "libbb.h"
+/* Must be after libbb.h: they need size_t */
+#include "fix_u32.h"
+#include <scsi/sg.h>
+#include <scsi/scsi.h>
/* various defines swiped from linux/cdrom.h */
#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
/* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
#define CDS_TRAY_OPEN 2
-#define FLAG_CLOSE 1
-#define FLAG_SMART 2
-
+#define dev_fd 3
/* Code taken from the original eject (http://eject.sourceforge.net/),
* refactored it a bit for busybox (ne-bb@nicoerfurth.de) */
-#define FLAG_SCSI 4
-#include <scsi/sg.h>
-#include <scsi/scsi.h>
-static void eject_scsi(const int fd, const char * const dev)
+static void eject_scsi(const char *dev)
{
- int i;
- unsigned char sense_buffer[32];
- unsigned char inqBuff[2];
- sg_io_hdr_t io_hdr;
- char sg_commands[3][6] = {
- {ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0},
- {START_STOP, 0, 0, 0, 1, 0},
- {START_STOP, 0, 0, 0, 2, 0}
- };
-
- if ((ioctl(fd, SG_GET_VERSION_NUM, &i) < 0) || (i < 30000))
- bb_error_msg_and_die("not an sg device or old sg driver");
-
- memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
- io_hdr.interface_id = 'S';
- io_hdr.cmd_len = 6;
- io_hdr.mx_sb_len = sizeof(sense_buffer);
- io_hdr.dxfer_direction = SG_DXFER_NONE;
- /* io_hdr.dxfer_len = 0; */
- io_hdr.dxferp = inqBuff;
- io_hdr.sbp = sense_buffer;
- io_hdr.timeout = 2000;
-
- for (i=0; i < 3; i++) {
- io_hdr.cmdp = sg_commands[i];
- ioctl_or_perror_and_die(fd, SG_IO, (void *)&io_hdr, "%s", dev);
- }
-
- /* force kernel to reread partition table when new disc inserted */
- ioctl(fd, BLKRRPART);
+ static const char sg_commands[3][6] = {
+ { ALLOW_MEDIUM_REMOVAL, 0, 0, 0, 0, 0 },
+ { START_STOP, 0, 0, 0, 1, 0 },
+ { START_STOP, 0, 0, 0, 2, 0 }
+ };
+
+ unsigned i;
+ unsigned char sense_buffer[32];
+ unsigned char inqBuff[2];
+ sg_io_hdr_t io_hdr;
+
+ if ((ioctl(dev_fd, SG_GET_VERSION_NUM, &i) < 0) || (i < 30000))
+ bb_error_msg_and_die("not a sg device or old sg driver");
+
+ memset(&io_hdr, 0, sizeof(sg_io_hdr_t));
+ io_hdr.interface_id = 'S';
+ io_hdr.cmd_len = 6;
+ io_hdr.mx_sb_len = sizeof(sense_buffer);
+ io_hdr.dxfer_direction = SG_DXFER_NONE;
+ /* io_hdr.dxfer_len = 0; */
+ io_hdr.dxferp = inqBuff;
+ io_hdr.sbp = sense_buffer;
+ io_hdr.timeout = 2000;
+
+ for (i = 0; i < 3; i++) {
+ io_hdr.cmdp = (void *)sg_commands[i];
+ ioctl_or_perror_and_die(dev_fd, SG_IO, (void *)&io_hdr, "%s", dev);
+ }
+
+ /* force kernel to reread partition table when new disc is inserted */
+ ioctl(dev_fd, BLKRRPART);
}
-static void eject_cdrom(const int fd, const unsigned long flags,
- const char * const dev)
+#define FLAG_CLOSE 1
+#define FLAG_SMART 2
+#define FLAG_SCSI 4
+
+static void eject_cdrom(unsigned flags, const char *dev)
{
int cmd = CDROMEJECT;
if (flags & FLAG_CLOSE
- || (flags & FLAG_SMART && ioctl(fd, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN))
+ || ((flags & FLAG_SMART) && ioctl(dev_fd, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN)
+ ) {
cmd = CDROMCLOSETRAY;
+ }
- return ioctl_or_perror_and_die(fd, cmd, NULL, "%s", dev);
+ ioctl_or_perror_and_die(dev_fd, cmd, NULL, "%s", dev);
}
int eject_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int eject_main(int argc, char **argv)
+int eject_main(int argc UNUSED_PARAM, char **argv)
{
- unsigned long flags;
+ unsigned flags;
const char *device;
- int dev;
opt_complementary = "?1:t--T:T--t";
- flags = getopt32(argv, "tT" USE_FEATURE_EJECT_SCSI("s"));
+ flags = getopt32(argv, "tT" IF_FEATURE_EJECT_SCSI("s"));
device = argv[optind] ? argv[optind] : "/dev/cdrom";
/* We used to do "umount <device>" here, but it was buggy
This works equally well (or better):
#!/bin/sh
umount /dev/cdrom
- eject
+ eject /dev/cdrom
*/
- dev = xopen(device, O_RDONLY|O_NONBLOCK);
+ xmove_fd(xopen_nonblocking(device), dev_fd);
if (ENABLE_FEATURE_EJECT_SCSI && (flags & FLAG_SCSI))
- eject_scsi(dev, device);
+ eject_scsi(device);
else
- eject_cdrom(dev, flags, device);
+ eject_cdrom(flags, device);
if (ENABLE_FEATURE_CLEAN_UP)
- close(dev);
+ close(dev_fd);
return EXIT_SUCCESS;
}
projects / platform / upstream / busybox.git / blobdiff