debian man page for lfc_readdirg

LFC_READDIRG(3) 					       LFC Library Functions						   LFC_READDIRG(3)

NAME
       lfc_readdirg - read LFC directory opened by lfc_opendir in the name server

SYNOPSIS
       #include <sys/types.h>
       #include "lfc_api.h"

       struct lfc_direnstatg *lfc_readdirg (lfc_DIR *dirp)

DESCRIPTION
       lfc_readdirg  reads  the  LFC directory opened by lfc_opendir in the name server.  This routine returns a pointer to a structure containing
       the current directory entry including the GUID associated.

       struct lfc_direnstatg {
	    u_signed64	   fileid;
	    char      guid[CA_MAXGUIDLEN+1];
	    mode_t	   filemode;
	    int       nlink;	     /* number of files in a directory */
	    uid_t	   uid;
	    gid_t	   gid;
	    u_signed64	   filesize;
	    time_t	   atime;	  /* last access to file */
	    time_t	   mtime;	  /* last file modification */
	    time_t	   ctime;	  /* last metadata modification */
	    short	   fileclass;	  /* not used */
	    char      status;	     /* ' ' --> online, 'm' --> migrated */
	    char      csumtype[3];   /* "CS", "AD" or "MD" */
	    char      csumvalue[33];
	    unsigned short d_reclen; /* length of this entry */
	    char      d_name[1];     /* basename in variable length */
       };

       lfc_readdirg caches a variable number of such entries, depending on the filename size, to minimize the  number  of  requests  to  the  name
       server.

       dirp   specifies the pointer value returned by lfc_opendir.

RETURN VALUE
       This  routine returns a pointer to a structure containing the current directory entry if the operation was successful or NULL if the end of
       the directory was reached or if the operation failed. When the end of the directory is encountered, serrno is not changed. If the operation
       failed, serrno is set appropriately.

       As  lfc_readdirg returns a null pointer both at the end of the directory and on error, an application wishing to check for error situations
       should set serrno to 0, then call lfc_readdirg, then check serrno and if it is non-zero, assume an error has occurred.

ERRORS
       EBADF	    File descriptor in DIR structure is invalid.

       EFAULT	    dirp is a NULL pointer.

       SECOMERR     Communication error.

       ENSNACT	    Name server is not running or is being shutdown.

SEE ALSO
       lfc_closedir(3), lfc_opendirg(3), lfc_rewinddir(3)

AUTHOR
       LCG Grid Deployment Team

LFC
								      $Date$							   LFC_READDIRG(3)