gfs_rename - change the name or location of a file
char *gfs_rename (char * gfarm_url_from, char * gfarm_url_to);
gfs_rename renames a file or directory gfarm_url_from to gfarm_url_to.
If gfarm_url_to already exists, it will be replaced. In this case,
when gfarm_url_from is a file gfarm_url_to also must be a file, when
gfarm_url_from is a directory, gfarm_url_to must be a empty directory.
Gfs_rename() can’t rename a directory to a subdirectory of itself.
NULL The function terminated successfully.
Insufficient memory was available.
User authentication failed when connecting to gfmd(8).
The parent directory of gfarm_url_from or gfarm_url_to did not
allow write permission.
A attempt was made to rename the directory gfarm_url_from to a
subdirectory of itself.
gfarm_url_from does not exist.
gfarm_url_to is a existing directory, though gfarm_url_from is
not a directory.
gfarm_url_to is not a directory. though gfarm_url_from is a
Others An error except the above occurred. The reason is shown by its