lfc_readdirg man page

LFC_READDIRG(3) LFC Library Functions LFC_READDIRG(3)

[1mNAME[0m
lfc_readdirg - read LFC directory opened by [1mlfc_opendir [22min the name
server

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

[1mstruct lfc_direnstatg *lfc_readdirg (lfc_DIR *[4m[22mdirp[24m[1m)[0m

[1mDESCRIPTION[0m
[1mlfc_readdirg [22mreads the LFC directory opened by [1mlfc_opendir [22min 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 */
};

[1mlfc_readdirg [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 [1mlfc_opendir[22m.

[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 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 [1mserrno [22mto 0, then call lfc_readdirg, 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
[1mlfc_closedir(3)[22m, [1mlfc_opendirg(3)[22m, [1mlfc_rewinddir(3)[0m

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

LFC $Date: 2011-06-15 09:20:59 +0200 (Wed, 15 Jun 2011)LF$C_READDIRG(3)

Referenced By

lfc_closedir(3), lfc_opendir(3), lfc_rewinddir(3).