NAME

       rfio_chmod, rfio_fchmod - change access mode of a directory/file

SYNOPSIS

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

       int rfio_chmod (const char *path, mode_t mode);
       int rfio_fchmod (int s, mode_t mode);

DESCRIPTION

       rfio_chmod sets the access permission portion of the mode of a directory/file to the bit pattern in mode.

       rfio_fchmod is identical to rfio_chmod but works on the file descriptor s returned by rfio_open.

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

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

              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

       The effective user ID of the process must match the owner of the file or be super-user.  If  a  directory
       is writable and has the sticky bit set, files/directories within that directory can be removed or renamed
       only if:

              the effective user ID of the requestor matches the owner ID of the file or

              the effective user ID of the requestor matches the owner ID of the directory or

              the file is writable by the requestor or

              the requestor is super-user.

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

       EPERM        The effective user ID does not match the owner of the file and is not super-user.

       ENOENT       The named file/directory does not exist or is a null pathname.

       EBADF        s is not a valid file descriptor.

       EACCES       Search  permission  is  denied  on a component of the path prefix or write permission on the
                    file itself is denied.

       EFAULT       path is a NULL pointer.

       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.

       SENOSHOST    Host unknown.

       SENOSSERV    Service unknown.

       SECOMERR     Communication error.

SEE ALSO

       Castor_limits(4)

AUTHOR

       LCG Grid Deployment Team