38 lines
761 B
C
38 lines
761 B
C
#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <linux/cdrom.h>
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#include <sys/ioctl.h>
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int main(void)
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{
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// Open cdrom device, it must be opened in non-blocking mode
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int cdfd = open("/dev/cdrom", O_RDONLY | O_NONBLOCK);
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if (cdfd < 0) {
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perror("open");
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return 1;
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}
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int cdrom_stat = ioctl(cdfd, CDROM_DRIVE_STATUS, 0);
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if ((cdrom_stat > -1 && cdrom_stat != CDS_NO_INFO) &&
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cdrom_stat == CDS_TRAY_OPEN) {
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printf("tray is already open\n");
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return 0;
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}
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// Issue eject command
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if (ioctl(cdfd, CDROMEJECT, 0) < 0) {
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if (errno == EBUSY) {
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fputs("either another process is using the drive or the door is locked.\n", stderr);
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return 1;
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}
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perror("ioctl");
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return 1;
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}
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close(cdfd);
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return 0;
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}
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