cd_type(3) Library Functions Manual cd_type(3)
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
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: 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. The address of *path is invalid. A signal was caught
during execution of the function. The argument *path points to a file or directory that is not within the CD-ROM file hierarchy.
{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. 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. The system file table is full.
A component of *path does not exist, or the *path argument points to an empty string. A component of the *path prefix is not a
directory. 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.
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cd_type(3)
