pxfchroot(3F)

NAME
     PXFCHROOT - Changes the root directory to a specified directory

SYNOPSIS
     CHARACTER*n path
     INTEGER ilen, ierror
     CALL PXFCHROOT(path, ilen, ierror)

IMPLEMENTATION
     UNICOS, UNICOS/mk, and IRIX systems

STANDARDS
     IEEE standard interface for FORTRAN 77

DESCRIPTION
     On IRIX systems, this routine is in libfortran.so which is linked by
     default when compiling programs with the MIPSpro 7 Fortran 90 compiler
     or when compiling programs with the -craylibs option to the MIPSpro
     F77 compiler.

     The PXFCHROOT subroutine uses the chroot(2) system call to change the
     root directory to the specified directory.

     When using the CF90 compiler or MIPSpro 7 Fortran 90 compiler on
     UNICOS, UNICOS/mk, or IRIX systems, all arguments must be of default
     kind unless documented otherwise.  On UNICOS and UNICOS/mk, default
     kind is KIND=8 for integer, real, complex, and logical arguments; on
     IRIX, the default kind is KIND=4.

     The following is a list of valid arguments for this subroutine:

     path      Input character variable or array element containing the
               name of a file.

     ilen      Input integer variable containing the length of path in
               characters.  If ilen is zero, all trailing blanks are
               removed before calling chroot().

     ierror    Output integer variable that contains zero if the root
               directory was changed to the directory specified by path or
               nonzero if the root directory was not changed.

     In addition to the errors returned by the chroot(2) system call,
     PXFCHROOT may return the following errors:

     EINVAL    If ilen is less than 0 or if ilen is greater than LEN(path)

     ENOMEM    If PXFCHROOT is unable to obtain memory to copy path

EXAMPLES
          program test
          character*(12) path
          integer ilen, ierr
          path = '/dir/test'
          ilen = 0
          call pxfchroot(path,ilen,ierr)
          if (ierr.ne.0) then
              print *,'FAIL: error from pxfchroot = ',ierr
          else
              print *,'PASS: No error from pxfchroot'
          endif
          end

SEE ALSO
     chroot(2)

     Application Programmer's Library Reference Manual for the printed
     version of this man page.