man dpns_statg (3): get information about a DPNS file or directory in the name server

SYNOPSIS

#include <sys/types.h>
#include "dpns_api.h"

int dpns_statg (const char *path, const char *guid, struct dpns_filestatg *statbuf)

int dpns_statr (const char *sfn, struct dpns_filestatg *statbuf)

dpns_statg gets information about a DPNS file or directory, having the given GUID, in the name server.

dpns_statr retrieves information about the given replica.

The file can be specified by path name or by guid. If both are given, they must point at the same file.

guid: specifies the Grid Unique IDentifier.
path: specifies the logical pathname relative to the current DPNS directory or the full DPNS pathname.
sfn: is either the Site URL or the Physical File Name for the replica.

The structure pointed to by statbuf contains the following members:

: u_signed64     fileid;                 /* entry unique identifier */

char           guid[CA_MAXGUIDLEN+1]   /* GUID */

mode_t         filemode;               /* see below */

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;              /* 1--> experiment, 2 --> user */

char           status;                 /* '-' --> online, 'm' --> migrated */

char           csumtype[3];

char           csumvalue[33];

filemode is constructed by OR'ing the bits defined in <sys/stat.h> under Unix or "statbits.h" under Windows/NT:

: S_IFLNK        0xA000           symbolic link

S_IFREG        0x8000           regular file

S_IFDIR        0x4000           directory

S_ISUID        0004000          set user ID on execution

S_ISGID        0002000          set group ID on execution

S_ISVTX        0001000          sticky bit

S_IRUSR        0000400          read by owner

S_IWUSR        0000200          write by owner

S_IXUSR        0000100          execute/search by owner

S_IRGRP        0000040          read by group

S_IWGRP        0000020          write by group

S_IXGRP        0000010          execute/search by group

S_IROTH        0000004          read by others

S_IWOTH        0000002          write by others

S_IXOTH        0000001          execute/search by others

This routine returns 0 if the operation was successful or -1 if the operation failed. In the latter case, serrno is set appropriately.

ENOENT: The named file/directory does not exist or is a null pathname.
EACCES: Search permission is denied on a component of the path prefix.
EFAULT: path or statbuf is a NULL pointer.
EINVAL: The length of the guid component exceeds CA_MAXGUIDLEN or path and guid are both given and they point at a different file.
ENOTDIR: A component of path prefix is not a directory.
ENAMETOOLONG: The length of path exceeds CA_MAXPATHLEN or the length of a path component exceeds CA_MAXNAMELEN or the length of the sfn exceeds CA_MAXSFNLEN.
SENOSHOST: Host unknown.
SENOSSERV: Service unknown.
SECOMERR: Communication error.
ENSNACT: Name server is not running or is being shutdown.

LCG Grid Deployment Team