NAME

       dpns_creat - create a new DPNS file or reset it in the name server

SYNOPSIS

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

       int dpns_creat (const char *path, mode_t mode)

       int dpns_creatx (const char *path, mode_t mode, struct dpns_fileid *file_uniqueid)

DESCRIPTION

       dpns_creat creates a new DPNS file or resets it in the name server.

       If the file exists, the length is truncated to 0 and the mode and owner are unchanged.

       If  the  file does not exist yet, an entry is created in the name server database and the file's owner ID
       is set to the effective user ID of the requestor.  The group ID of the file is set to the effective group
       ID of the requestor or is taken from the parent directory if the latter has the S_ISGID bit set.

       The  access  permission  bits for the file are taken from mode, then all bits set in the requestor's file
       mode creation mask are cleared (see dpns_umask(3)).

       dpns_creatx behaves in the same way and returns the file unique id (name server hostname and file id).

       path   specifies the logical pathname relative to the current DPNS directory or the full DPNS pathname.

RETURN VALUE

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

ERRORS

       ENOENT       A component of path prefix does not exist or path is a null pathname.

       EACCES       Search permission is denied on a component of the path prefix or the file does not exist and
                    write permission on the parent directory is denied or the file exists and  write  permission
                    on the file itself is denied.

       EFAULT       path or file_uniqueid is a NULL pointer.

       EEXIST       File exists already and has replicas.

       ENOTDIR      A component of path prefix is not a directory.

       EISDIR       path is an existing directory.

       EINVAL       The fileclass in the parent directory is zero.

       ENOSPC       The name server database is full.

       ENAMETOOLONG The  length  of  path  exceeds  CA_MAXPATHLEN  or  the  length  of  a path component exceeds
                    CA_MAXNAMELEN.

       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_chdir(3), dpns_chmod(3), dpns_stat(3), dpns_statg(3), dpns_umask(3)

AUTHOR

       LCG Grid Deployment Team