02-26-2007
Thanks. That's close, but the filesize check needs to check if the size is 0 or >6
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LEARN ABOUT DEBIAN
dpns_readdirxr
DPNS_READDIRXR(3) DPNS Library Functions DPNS_READDIRXR(3)
NAME
dpns_readdirxr - read DPNS directory opened by dpns_opendir in the name server
SYNOPSIS
#include <sys/types.h>
#include "dpns_api.h"
struct dpns_direnrep *dpns_readdirxr (dpns_DIR *dirp, char *se)
DESCRIPTION
dpns_readdirxr reads the DPNS directory opened by dpns_opendir in the name server. This routine returns a pointer to a structure contain-
ing the current directory entry (basename, guid and filesize) and the replica information.
struct dpns_rep_info {
u_signed64 fileid;
char status;
char *host;
char *sfn;
};
struct dpns_direnrep {
u_signed64 fileid;
char guid[CA_MAXGUIDLEN+1];
mode_t filemode;
u_signed64 filesize;
int nbreplicas;
struct dpns_rep_info *rep; /* array of replica info structures */
unsigned short d_reclen; /* length of this entry */
char d_name[1]; /* basename in variable length */
};
dpns_readdirxr 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 dpns_opendir.
se allows to restrict the replica entries to a given SE.
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 dpns_readdirxr returns a null pointer both at the end of the directory and on error, an application wishing to check for error situa-
tions should set serrno to 0, then call dpns_readdirxr, then check serrno and if it is non-zero, assume an error has occurred.
ERRORS
EBADF File descriptor in DIR structure is invalid.
ENOMEM Memory could not be allocated for unmarshalling the reply.
EFAULT dirp is a NULL pointer.
EINVAL The length of se exceeds CA_MAXHOSTNAMELEN.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.
SEE ALSO
dpns_closedir(3), dpns_opendir(3), dpns_rewinddir(3)
AUTHOR
LCG Grid Deployment Team
DPNS
$Date$ DPNS_READDIRXR(3)