NAME

cd_nmconv - Sets or gets CD-ROM file name conversions

LIBRARY

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

SYNOPSIS

#include <sys/cdrom.h> int cd_nmconv (
char ∗path,
int ∗cmd,
int ∗flag );

PARAMETERS

∗path

Points to a mount-point of a CD-ROM file system. 

∗cmd

Can be set to either {CD_SETNMCONV} to set or {CD_GETNMCONV} to get the name conversion for file names on a mounted CD-ROM. 

∗flag

Used in conjunction with ∗cmd, and can be one of the following:

{CD_NOCONV}

No conversion.  This is the default when the CD-ROM is first mounted. 

{CD_LOWER}

File or directory names on the CD-ROM File System are converted to lowercase when represented in the XSI file hierarchy.  In addition, if a file or directory name contains no File Name Extension, SEPARATOR 1, a dot (.), is not represented in the XSI file hierarchy. 

{CD_NOVERSION}

The version number and SEPARATOR 2, a semi-colon (;), of a file or directory name on the CD-ROM File System are not represented in the XSI file hierarchy. 

Note that {CD_LOWER} and {CD_NOVERSION} may be bitwise-inclusive OR-ed. 

DESCRIPTION

The cd_nmconv routine sets of gets the name conversion ∗flag for file names on a mounted CD-ROM. 

RESTRICTIONS

Setting a file name conversion is restricted to users with the appropriate privileges.  This function is intended to be used to set a file name conversion only directly after the CD-ROM is mounted and before its files and directories are accessed.  Attempting to use this function to set a file name conversion after files or directories on the CD-ROM have been accessed may produce unpredictable results. 

RETURN VALUES

If successful, the value zero is returned. 
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 permission is denied on the mount-point. 

[EFAULT]The address of ∗flag or ∗path is invalid. 

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

[EINVAL]The argument ∗path does not point to a mount-point of a CDROM File System. 
The value of ∗cmd or ∗flag is invalid. 

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

[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. 

[EPERM]The user does not have the appropriate privileges to set values. 

RELATED INFORMATION

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