dpns_rename(3) [debian man page]

DPNS_RENAME(3)						      DPNS Library Functions						    DPNS_RENAME(3)

NAME

       dpns_rename - rename a DPNS file or directory in the name server

SYNOPSIS

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

       int dpns_rename (const char *oldpath, const char *newpath)

DESCRIPTION

       dpns_rename renames a DPNS file or directory in the name server.

       oldpath and newpath must be of the same type, i.e. both regular files or both directories.

       If newpath exists already, it will be removed before the rename takes place. If newpath is a directory, it must be empty.

       When renaming a directory, newpath must not be a descendant of oldpath, i.e.  newpath must not contain a path prefix that names oldpath.

       Write  permission  is required on both parents. If oldpath is a directory, write permission is required on it and if newpath is an existing
       directory, write permission is also required on it.

       If any of the parents has the sticky bit S_ISVTX set, either

	      the effective user ID of the requestor must match the owner ID of the file or

	      the effective user ID of the requestor must match the owner ID of the directory or

	      the file must be writable by the requestor or

	      the requestor must have ADMIN privilege in the Cupv database.

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 oldpath prefix does not exist or oldpath or newpath is a null pathname.

       EACCES	    Search permission is denied on a component of the path prefixes or write permission on the parent  directories  is	denied	or
		    oldpath is a directory and write permission is denied on oldpath or newpath.

       EFAULT	    oldpath or newpath is a NULL pointer.

       EEXIST	    newpath is an existing directory and is not empty or newpath is an existing file with replicas.

       ENOTDIR	    A component of the path prefixes is not a directory or oldpath is a directory and newpath is an existing regular file.

       EISDIR	    newpath is a directory while oldpath is a regular file.

       EINVAL	    newpath is a descendant of oldpath.

       ENAMETOOLONG The length of oldpath or newpath 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_unlink(3), Cupvlist(1)

AUTHOR

       LCG Grid Deployment Team

DPNS
							   $Date: 2005/06/30 08:34:03 $ 					    DPNS_RENAME(3)

RFIO_SYMLINK(3) 					      Rfio Library Functions						   RFIO_SYMLINK(3)

NAME

       rfio_symlink - create a symbolic link to a file

SYNOPSIS

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

       int rfio_symlink (const char *oldpath, const char *newpath);
       int rfio_msymlink (const char *oldpath, const char *newpath);
       int rfio_msymlink_reset ();
       int rfio_symend ();

DESCRIPTION

       rfio_symlink creates a symbolic link newpath which contains the string oldpath.

       newpath may point to a non existing file.
       If newpath exists already, it will not be overwritten.
       Write permission is required on newpath parent.

       rfio_msymlink  is  identical  to  rfio_symlink  but  keeps the connection open to the server unless there are more than MAXMCON connections
       already opened. This is useful when issuing a series of symlink calls.  The last rfio_msymlink  call  should  be  followed  by  a  call	to
       rfio_symend.

       rfio_msymlink_reset  is	to be used when your program is forking. In such a case the permanent connections opened with rfio_msymlink become
       shared between the parent and the child. Use rfio_msymlink_reset to perform the necessary reset and close of the socket file descriptor	in
       the parent or the child in order to be sure that only of them will receice an answer from the RFIO daemon.

       See NOTES section below.

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.

NOTES

       Multiple  connections  using rfio_msymlink are thread-safe but not process-wide, therefore a forked child can share file descriptors opened
       with rfio_msymlink by its parent. Use rfio_msymlink_reset in such case.

       Multiple connections behaviour is undefined if you work in a multi-threaded environment and  with  threads  not	created  using	the  LCG's
       Cthread interface.

ERRORS

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

       ENOMEM	    Insufficient memory.

       EACCES	    Search  permission	is  denied  on	a  component  of the newpath prefix or write permission on the newpath parent directory is
		    denied.

       EFAULT	    oldpath or newpath is a NULL pointer.

       EEXIST	    newpath already exists.

       ENOTDIR	    A component of the newpath prefix is not a directory.

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

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

       SEOPNOTSUP   Not supported on Windows.

SEE ALSO

       Castor_limits(4), rfio_readlink(3), rfio_unlink(3), Cthread(3)

AUTHOR

       LCG Grid Deployment Team

LCG
							   $Date: 2005/03/31 13:13:03 $ 					   RFIO_SYMLINK(3)