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#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <limits.h>
#include <string.h>
#include <sys/ioctl.h>
#include <linux/cdrom.h>
#include <log/log.h>
#include "cdrom.h"
static int cdrom_open(const char *devpath, const char *loc)
{
int fd;
fd = open(devpath, O_RDONLY | O_NONBLOCK);
if (fd < 0)
pb_log("%s: can't open %s: %s\n", loc, devpath,
strerror(errno));
return fd;
}
void cdrom_init(const char *devpath)
{
int fd, rc;
fd = cdrom_open(devpath, __func__);
if (fd < 0)
return;
/* We disable autoclose so that any attempted mount() operation doesn't
* close the tray, and disable CDO_LOCK to prevent the lock status
* changing on open()/close()
*/
rc = ioctl(fd, CDROM_CLEAR_OPTIONS, CDO_LOCK | CDO_AUTO_CLOSE);
if (rc < 0)
pb_debug("%s: CLEAR CDO_LOCK|CDO_AUTO_CLOSE failed: %s\n",
__func__, strerror(errno));
close(fd);
}
bool cdrom_media_present(const char *devpath)
{
int fd, rc;
fd = cdrom_open(devpath, __func__);
if (fd < 0)
return false;
rc = ioctl(fd, CDROM_DRIVE_STATUS, CDSL_CURRENT);
close(fd);
return rc == CDS_DISC_OK;
}
void cdrom_eject(const char *devpath)
{
int fd, rc;
fd = cdrom_open(devpath, __func__);
if (fd < 0)
return;
/* unlock cdrom device */
rc = ioctl(fd, CDROM_LOCKDOOR, 0);
if (rc < 0)
pb_log("%s: CDROM_LOCKDOOR(unlock) failed: %s\n",
__func__, strerror(errno));
rc = ioctl(fd, CDROMEJECT, 0);
if (rc < 0)
pb_log("%s: CDROM_EJECT failed: %s\n",
__func__, strerror(errno));
close(fd);
}
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