NAME

cd_type - Determines the type of file system recorded on a CD-ROM

LIBRARY

Rock Ridge and X/Open Extensions to the CDFS library (libcdrom.so, libcdrom.a)

SYNOPSIS

#include <sys/cdrom.h> int cd_type (
char ∗path );

PARAMETERS

∗path

Points to a pathname naming a file or directory within the CD-ROM File  System hierarchy, or to a pathname naming the block special file for the CD-ROM File System. 

DESCRIPTION

The cd_type routine determines the type of file system recorded on the CD-ROM pointed to by ∗path. 

RETURN VALUES

If successful, the function returns one of the following values, which are defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h:

{CD_ISO9660} CD-ROM is recorded according to ISO 9660. 

{CD_HSG} CD-ROM is recorded according to High Sierra Group. 

{CD_RRIP}  CD-ROM is recorded according to ISO 9660 with the Rock Ridge Extension. 

If unsuccessful, the integer -1 is returned and errno is set to indicate the error. 

ERRORS

The function will fail if:

[EACCES]Search permission is denied for a directory in ∗path or read and execute permission are denied for the named file, or read permission is denied on the block special file pointed to by ∗path. 

[EFAULT]The address of ∗path is invalid. 

[EINTR]A signal was caught during execution of the function. 

[EINVAL]The argument ∗path points to a file or directory that is not within the CD-ROM file hierarchy. 

[EMFILE]{OPEN_MAX} file descriptors are currently open in the calling process. 

[Tru64 UNIX]  Either the OPEN_MAX value or the per-process soft descriptor limit is checked. 

[ENAMETOOLONG]
The length of the ∗path string exceeds {PATH_MAX}, or a pathname component is longer than {NAME_MAX} while {_POSIX_NO_TRUNC} is in effect. 

[ENFILE]The system file table is full. 

[ENOENT]A component of ∗path does not exist, or the ∗path argument points to an empty string. 

[ENOTDIR]A component of the ∗path prefix is not a directory. 

[ENXIO]The CD-ROM is not in the drive, or a read error occurred. 

The named file is a block special file and the device associated with the special file does not exist. 

RELATED INFORMATION

Files: cdfs/xcdr.h, sys/cdrom.h.