dpns_readdir man page

DPNS_READDIR(3)             DPNS Library Functions             DPNS_READDIR(3)

[1mNAME[0m
      dpns_readdir  -  read DPNS directory opened by [1mdpns_opendir [22min the name
      server

[1mSYNOPSIS[0m
      [1m#include <sys/types.h>[0m
      [1m#include <dirent.h>[0m
      [1m#include "dpns_api.h"[0m

      [1mstruct dirent *dpns_readdir (dpns_DIR *[4m[22mdirp[24m[1m)[0m

[1mDESCRIPTION[0m
      [1mdpns_readdir [22mreads the DPNS directory opened  by  [1mdpns_opendir  [22min  the
      name  server.  This routine returns a pointer to a structure containing
      the current directory entry.  [1mdpns_readdir [22mcaches a variable number  of
      such entries, depending on the filename size, to minimize the number of
      requests to the name server.

      [4mdirp[24m   specifies the pointer value returned by [1mdpns_opendir[22m.

[1mNOTE[0m
      Only the fields d_name, d_reclen and on  some  platforms  d_namlen  are
      filled.

[1mRETURN VALUE[0m
      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, [1mserrno [22mis set appropriately.

      As dpns_readdir returns a null pointer both at the end of the directory
      and on error, an application wishing  to  check  for  error  situations
      should  set  [1mserrno [22mto 0, then call dpns_readdir, then check [1mserrno [22mand
      if it is non-zero, assume an error has occurred.

[1mERRORS[0m
      [1mEBADF        [22mFile descriptor in DIR structure is invalid.

      [1mEFAULT       [4m[22mdirp[24m is a NULL pointer.

      [1mSECOMERR     [22mCommunication error.

      [1mENSNACT      [22mName server is not running or is being shutdown.

[1mSEE ALSO[0m
      [1mdpns_closedir(3)[22m, [1mdpns_opendir(3)[22m, [1mdpns_rewinddir(3)[22m, [1mdirent[0m

[1mAUTHOR[0m
      [1mLCG Grid Deployment [22mTeam

DPNS         $Date: 2011-06-15 09:20:59 +0200 (Wed, 15 Jun 2011)DP$NS_READDIR(3)