# Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software
# Foundation, Inc.
#
# This file is part of DejaGnu.
#
# DejaGnu is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# DejaGnu is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with DejaGnu; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

# This file was written by Rob Savoye. (rob@welcomehome.org)

if ![info exists board] {
    error "must set $board before loading unix.exp"
}

# For rcp_download, rsh_exec.
load_lib remote.exp

#
# unix_load -- load the program and execute it
#
# See default.exp for explanation of arguments and results.
#


proc unix_load { dest prog args } {
    global ld_library_path
    set output ""
    set orig_ld_library_path ""

    if { [llength $args] > 0 } {
	set parg [lindex $args 0]
    } else {
	set parg ""
    }

    if { [llength $args] > 1 } {
	set inp [lindex $args 1]
    } else {
	set inp ""
    }

    if ![file exists $prog] then {
	# We call both here because this should never happen.
	perror "$prog does not exist in unix_load."
	verbose -log "$prog does not exist." 3
	return "untested"
    }
    verbose "loading to $dest" 2
    if ![is_remote $dest] {
	if { "$inp" != "" } {
	    set command "$prog $parg < $inp"
	} else {
	    set command "$prog $parg"
	}

        if ![info exists ld_library_path] {
	    set ld_library_path ""
        }

	set orig_ld_library_path "[getenv LD_LIBRARY_PATH]"
	setenv LD_LIBRARY_PATH "$ld_library_path:$orig_ld_library_path"
	setenv SHLIB_PATH "$ld_library_path:$orig_ld_library_path"
	verbose -log "Setting LD_LIBRARY_PATH to $ld_library_path:$orig_ld_library_path" 2

	set id [remote_spawn $dest "$command" "readonly"]
	if { $id < 0 } {
	    set output "remote_spawn failed"
	    set status -1
	} else {
	    set status [remote_wait $dest 300]
	    set output [lindex $status 1]
	    set status [lindex $status 0]
	}
	# Unset them so we don't potentially get hosed when we try to run a
	# non-testcase executable. (Setting LD_LIBRARY_PATH is the wrong
	# fix in the first place; this just tries to minimize the resulting
	# crap.)
	if [info exists ld_library_path] {
	    setenv LD_LIBRARY_PATH $orig_ld_library_path
	    setenv SHLIB_PATH $orig_ld_library_path
	}
    } else {
	set remotefile "/tmp/[file tail $prog].[pid]"
	set remotefile [remote_download $dest $prog $remotefile]
	if { $remotefile == "" } {
	    verbose -log "Download of $prog to [board_info $dest name] failed." 3
	    return [list "unresolved" ""]
	}
	if [board_info $dest exists remote_link] {
	    if [[board_info $dest remote_link] $remotefile] {
		verbose -log "Couldn't do remote link"
		remote_exec $dest "\\rm -f $remotefile"
		return [list "unresolved" ""]
	    }

	    verbose "$prog linked ok" 3
	} else {
	    # rcp's to lynx seem not to get marked executable
	    set status [remote_exec $dest "chmod +x $remotefile"]
	    if { [lindex $status 0] != 0 } {
		remote_file $dest delete ${remotefile}.o $remotefile
		verbose -log "chmod +x of $prog on $dest failed." 3
		return [list "unresolved" ""]
	    }
	}
	set status [remote_exec $dest "$remotefile" $parg $inp]
	remote_file $dest delete $remotefile.o $remotefile
	if { [lindex $status 0] < 0 } {
	    verbose -log "Couldn't execute $prog, [lindex $status 1]" 3
	    return [list "unresolved" ""]
	}
	set output [lindex $status 1]
	set status [lindex $status 0]
    }

    setenv LD_LIBRARY_PATH $orig_ld_library_path
    setenv SHLIB_PATH $orig_ld_library_path

    verbose "Executed $prog, status $status" 2
    if ![string match "" $output] {
	verbose -- "$output" 2
    }
    if { $status == 0 } {
	set result "pass"
    } else {
	set result "fail"
    }
    return [list $result $output]
}

set_board_info protocol  "unix"