cd_pvd(3)						     Library Functions Manual							 cd_pvd(3)

NAME

       cd_pvd, cd_cpvd - Reads the Primary Volume Descriptor from 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_pvd (	char *path,	 struct iso9660_pvd *pvd ); int cd_cpvd (      char *path,	char *addr );

PARAMETERS

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

	      Points to the iso9660_pvd structure that holds the contents of the Primary Volume  Descriptor  from  the	CD-ROM.   The  iso9660_pvd
	      structure is defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h

	      Points to the address to which the Primary Volume Descriptor on the CD-ROM is copied.

DESCRIPTION

       The  function cd_pvd fills the *pvd structure with the contents of the Primary Volume Descriptor from the CD-ROM.  To execute this function
       successfully, the user must have read or execute permission for the file or directory pointed to by *path

       The function cd_cpvd copies the complete Primary Volume Descriptor that is recorded on the CD-ROM to the address pointed to by *addr.   The
       user  must  allocate  {CD_PVDLEN}  bytes for the Primary Volume Descriptor.  The variable {CD_PVDLEN} is defined in cdfs/xcdr.h, an include
       file that is called into sys/cdrom.h.

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 for the  file,  directory,	or
       block  special  file  pointed to by *path.  The address of *path or *pvd 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.
       The named file is a block special file and the CD-ROM is not recorded according to the ISO 9660 standard.  {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 file does not exist.

RELATED INFORMATION

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

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																	 cd_pvd(3)