CHMOD(2)                 DOMAIN/IX SYS5                  CHMOD(2)



NAME
     chmod - change mode of file

USAGE
     int chmod (path, mode)
     char *path;
     int mode;


DESCRIPTION
     Path points to the pathname of a file.  Chmod sets the
     access permissions of the file's mode according to the bit
     pattern defined in mode.

     Access permission bits are interpreted as follows:

       04000     Set user ID on execution.
       02000     Set group ID on execution.
       00400     Read by owner.
       00200     Write by owner.
       00100     Execute (search if a directory) by owner.
       00070     Read, write, and execute (search) by group.
       00007     Read, write, and execute (search) by others.

     Chmod will fail unless the process's effective user ID is
     either that of the file's owner or that of the super-user.

     If the effective user ID of the process is not super-user
     and the effective group ID of the process does not match the
     group ID of the file, mode bit 02000 (set group ID on execu-
     tion) is cleared.

RETURN VALUE
     A successful call returns zero.  A failed call returns -1
     and sets errno as indicated below.

ERRORS
     Chmod fails and the file mode remains the same if one or
     more of the following is true:

     [ENOTDIR] A component of the path prefix is not a directory.

     [ENOENT]  The file named does not exist.

     [EACCES]  Search permission is denied on a component of the
               path prefix.

     [EPERM]   The effective user ID does not match the file
               owner's and the effective user ID is not super-
               user.



Printed 12/4/86                                           CHMOD-1

CHMOD(2)                 DOMAIN/IX SYS5                  CHMOD(2)



     [EROFS]   The file named resides on a read-only file system.

     [EFAULT]  Path points outside the allocated address space of
               the process.

RELATED INFORMATION
     chown(2), mknod(2)














































CHMOD-2                                           Printed 12/4/86