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cd_ptrec(3)
NAME
  cd_ptrec, cd_cptrec - Reads the Path Table Record from the CD-ROM Path
  Table

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

SYNOPSIS
  #include <sys/cdrom.h>

  int cd_ptrec (
	  char *path,
	  struct iso9660_ptrec *ptrec );

  int cd_cptrec (
	  char *path,
	  char *addr );

PARAMETERS
  *path

      Points to a file or directory within the CD-ROM File System hierarchy.

  *ptrec

      Points to the iso9660_ptrec structure that holds the contents of the
      Path Table Record associated with the file or directory pointed to by
      *path.  The iso9660_ptrec structure is defined in cdfs/xcdr.h, an
      include file that is called into sys/cdrom.h

  *addr

      Specifies the address to which the function cd_cptrec copies the
      complete Path Table Record that is recorded on the CD-ROM.

DESCRIPTION
  The cd_ptrec routine fills the *ptrec structure with the contents of the
  Path Table Record associated with the directory that is pointed to by
  *path.

  The cd_cptrec function copies the complete Path Table Record that is
  recorded on the CD-ROM to the address pointed to by *addr.  The user must
  allocate {CD_MAXPTRECL} bytes for the Path Table Record.  The variable
  {CD_MAXPTRECL} 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:

  [EACCES]  Search permission is denied for a directory in *path or read
	    permission is denied for the named directory.

  [EFAULT]  The address of *path or *addr 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.

	    [DIGITAL]  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.

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