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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include "ki.h"
# KFSUBD -- Compute the net pathname of a subdirectory given the net pathname
# of the parent directory and the name of the subdirectory (the logical
# subdirectory names . and .. are supported). If the subdirectory resides on
# the local node we call the local kernel to compute the new directory pathname.
# If the directory resides on a remote node we merely append to the virtual
# pathname, leaving resolution of the final pathname to the remote kernel when
# the file is referenced at runtime.
procedure kfsubd (osdir, maxch, subdir, nchars)
char osdir[maxch] #RW net pathname of directory
int maxch #RO max chars out in osdir string
char subdir[ARB] #RO receives pathname
int nchars #WO receives length of osfn string
int delim, op
char alias[SZ_ALIAS]
int ki_gnode(), gstrcat()
begin
if (ki_gnode (osdir, alias, delim) == LOCAL) {
# Directory is on the local node.
if (osdir[delim+1] == EOS) {
call zfgcwd (osdir[delim+1], maxch - delim, nchars)
if (nchars == ERR)
return
call strupk (osdir[delim+1], osdir[delim+1], maxch-delim)
}
call zfsubd (osdir[delim+1], maxch - delim, subdir, nchars)
if (nchars != ERR)
nchars = nchars + delim
} else {
# File is on a remote node. Do not map the filename; leave that
# to the kernel when the file is referenced at runtime. The OSDIR
# string is assumed to be a concatenatable VFN (with node prefix).
op = gstrcat (subdir, osdir, maxch) + 1
if (op > 1 && osdir[op-1] != '/') {
osdir[op] = '/'
op = op + 1
osdir[op] = EOS
}
nchars = op - 1
}
end
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