NAME
dpns_listreplica - list replica entries for a given file
SYNOPSIS
#include <sys/types.h>
#include "dpns_api.h"
struct dpns_filereplica *dpns_listreplica (const char *path, const char
*guid, int flags, dpns_list *listp)
DESCRIPTION
dpns_listreplica lists replica entries for a given file. This routine
returns a pointer to a structure containing the current replica entry.
struct dpns_filereplica {
u_signed64 fileid;
u_signed64 nbaccesses;
time_t atime; /* last access to replica */
time_t ptime; /* replica pin time */
char status;
char f_type; /* ’V’ for Volatile, ’P’ for Permanent */
char poolname[CA_MAXPOOLNAMELEN+1];
char host[CA_MAXHOSTNAMELEN+1];
char fs[80];
char sfn[CA_MAXSFNLEN+1];
};
path specifies the logical pathname.
guid specifies the Grid Unique IDentifier.
flags may be one of the following constant:
CNS_LIST_BEGIN
the first call must have this flag set to allocate
buffers and initialize pointers.
CNS_LIST_CONTINUE
all the following calls must have this flag set.
CNS_LIST_END
final call to terminate the list and free resources.
RETURN VALUE
This routine returns a pointer to a structure containing the current
replica entry if the operation was successful or NULL if all entries
have been returned or if the operation failed. In the latter case,
serrno is set appropriately.
EXAMPLES
A C program listing the replicas fo a given sfn could look like:
int flags;
dpns_list list;
struct dpns_filereplica *lp;
flags = CNS_LIST_BEGIN;
while ((lp = dpns_listreplica (sfn, NULL, flags, &list)) != NULL) {
flags = CNS_LIST_CONTINUE;
/* process the entry */
.....
}
(void) dpns_listreplica (sfn, NULL, CNS_LIST_END, &list);
ERRORS
ENOENT The named file does not exist.
EACCES Search permission is denied on a component of the parent
directory.
ENOMEM Memory could not be allocated for the output buffer.
EFAULT path and guid are NULL pointers or listp is a NULL
pointer.
ENOTDIR A component of path prefix is not a directory.
EINVAL The length of guid exceeds CA_MAXGUIDLEN.
ENAMETOOLONG The length of path exceeds CA_MAXPATHNAMELEN.
SENOSHOST Host unknown.
SENOSSERV Service unknown.
SECOMERR Communication error.
ENSNACT Name server is not running or is being shutdown.
SEE ALSO
Castor_limits(4), dpns_addreplica(3)