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cd_pvd(3)
NAME
  cd_pvd, cd_cpvd - reads the Primary Volume Descriptor from a CD-ROM

SYNOPSIS
  #include <sys/cdrom.h>

  int cd_pvd(
	  char *path,
	  struct iso9660_pvd *pvd );

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

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

PARAMETERS
  *path
      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.

  *pvd
      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

  *addr
      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:

  [EACCES]
      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.

  [EFAULT]
      The address of *path or *pvd 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. The named file is a block special file and the
      CD-ROM is not recorded according to the ISO 9660 standard.

  [EMFILE]
      {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.

  [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. The named file
      is a block-special file and the device associated with the file does
      not exist.

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

Index for Section 3

Alphabetical listing for C

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