C > Gnu-Linux sample source codes

 Some cd-rom functions

Some cd-rom functions #include <stdio.h> #include <fcntl.h> #include <stdlib.h> #include <unistd.h> #include <sys/ioctl.h> #include <linux/cdrom.h> /* // close */ int cdr_close(char *dev) { int fd; if((fd = open(dev, O_RDONLY|O_NONBLOCK)) == -1) return -1; else if(ioctl(fd, CDROMCLOSETRAY) == -1) return -1; else close(fd); return 0; } /* // eject */ int cdr_eject(char *dev) { int fd; if((fd = open(dev, O_RDONLY|O_NONBLOCK)) == -1) return -1; else if(ioctl(fd, CDROMEJECT) == -1) return -1; else close(fd); return 0; } /* // lock // - if lock == 1, lock // - if lock == 0, unlock */ int cdlock(char *dev, int lock) { int fd; if((fd = open(dev, O_RDONLY|O_NONBLOCK)) == -1) return -1; else if(ioctl(fd, CDROM_LOCKDOOR, lock) == -1) return -1; else close(fd); return 0; }



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