cd_xar(3) [osf1 man page]

cd_xar(3)						     Library Functions Manual							 cd_xar(3)

NAME

       cd_xar, cd_cxar - Reads the Extended Attribute Record for a CD-ROM file or directory from the CD-ROM

LIBRARY

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

SYNOPSIS

       #include  <sys/cdrom.h>	int cd_xar (	  char *path,	   int fsec,	  struct iso9660_xar *xar,	int applen,	 int esclen ); int
       cd_cxar (      char *path,      int fsec,      char *addr,      int xarlen );

PARAMETERS

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

	      Specifies the File Section of the file or directory pointed to by *path, with the numbering beginning at one.  If fsec is set to -1,
	      the last File Section of the named file or the only File Section of the named directory is assumed.

	      Points  to  the  iso9660_xar  structure  that  holds  the Extended Attribute Record (XAR) information.  The iso9660_xar structure is
	      defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h

	      Used in conjunction with esclen, determines how many bytes will be copied to the address specified  by  the  *xar  structure  member
	      app_use.

	      Used  in	conjunction  with  applen,  determines how many bytes will be copied to the address specified by the *xar structure member
	      esc_seq.

	      Specifies the address where the function cd_cxar copies the XAR that is recorded on the CD-ROM.

	      Determines if part or all of the XAR will be read.

DESCRIPTION

       The cd_xar routine fills the *xar structure with the contents of the Extended Attribute Record (XAR) that is associated with  the  file	or
       directory pointed to by *path.

       The  total  number  of  logical	blocks	of an XAR can be obtained by calling the cd_drec function.  The Logical Block Size in bytes can be
       obtained by calling the cd_pvd function.  The length of the fixed part of the XAR is given by {CD_XARFIXL}.  The variable  {CD_XARFIXL}	is
       defined in cdfs/xcdr.h, an include file that is called into sys/cdrom.h.

       The cd_cxar function copies the XAR as recorded on the CD-ROM to the address pointed to by *addr.

RETURN VALUES

       If successful, the routines return the following values:

       The cd_xar function returns the number of bytes copied for the variable part of the XAR.

       The cd_cxar function returns the number of bytes copied.
       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 or directory
       pointed to by *path.  The address of *path or *addr 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 value of fsec or xarlen is invalid.	{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.
	      The Volume containing the File Section indicated by fsec is not mounted.	A component of *path does not exist, or the *path argument
	      points to an empty string.
	      The File Section indicated by fsec has no XAR.  A component of the *path prefix is not a directory.  The CD-ROM is not in the drive,
	      or a read error occurred.

RELATED INFORMATION

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

       Functions: cd_drec(3)

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																	 cd_xar(3)