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cd_nmconv

Section: C Library Functions (3)
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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

Points to a mount-point of a CD-ROM file system.
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.
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: Search permission is denied for a directory in *path or read permission is denied on the mount-point. The address of *flag or *path is invalid. A signal was caught during execution of the function. The argument *path does not point to a mount-point of a CDROM File System.
The value of *cmd or *flag is invalid. {OPEN_MAX} file descriptors are currently open in the calling process.

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

RELATED INFORMATION

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

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Index

NAME
LIBRARY
SYNOPSIS
PARAMETERS
DESCRIPTION
RESTRICTIONS
RETURN VALUES
ERRORS
RELATED INFORMATION

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Time: 02:42:35 GMT, October 02, 2010