Re: PATCH: file:close() return-value for pipes
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- Subject: Re: PATCH: file:close() return-value for pipes
- From: David Favro <lua@...>
- Date: 2011年2月12日 09:11:22 -0500
Enhanced test program to exercise more cases including death by signal for
both the child process and the shell/exec'd-command.
==== 5.2.0-alpha first patch output: ====
Lua version: Lua 5.2
sh: foobarbaz: not found
cmd: foobarbaz
rc1: 127
rc2: e
cmd: cat>/dev/null
rc1: 0
rc2: e
cmd: exit 3
rc1: 3
rc2: e
cmd: kill -HUP $$
rc1: 1
rc2: s
Hangup
cmd: sh -c 'kill -HUP $$'
rc1: 129
rc2: e
==== 5.2.0-alpha second patch output: ====
Lua version: Lua 5.2
sh: foobarbaz: not found
cmd: foobarbaz
rc1: 127
rc2: nil
cmd: cat>/dev/null
rc1: 0
rc2: nil
cmd: exit 3
rc1: 3
rc2: nil
cmd: kill -HUP $$
rc1: nil
rc2: 1
Hangup
cmd: sh -c 'kill -HUP $$'
rc1: 129
rc2: nil
==== 5.2.0-alpha unpatched output: ====
Lua version: Lua 5.2
sh: foobarbaz: not found
cmd: foobarbaz
rc1: 32512
rc2: nil
cmd: cat>/dev/null
rc1: 0
rc2: nil
cmd: exit 3
rc1: 768
rc2: nil
cmd: kill -HUP $$
rc1: 1
rc2: nil
Hangup
cmd: sh -c 'kill -HUP $$'
rc1: 33024
rc2: nil
==== 5.1 output: ====
Lua version: Lua 5.1
sh: foobarbaz: not found
cmd: foobarbaz
rc1: true
rc2: nil
cmd: cat>/dev/null
rc1: true
rc2: nil
cmd: exit 3
rc1: true
rc2: nil
cmd: kill -HUP $$
rc1: true
rc2: nil
Hangup
cmd: sh -c 'kill -HUP $$'
rc1: true
rc2: nil
-- Test the behavior of file:close() on pipes.
-- This may only work on POSIX systems.
local cmds =
{
"foobarbaz" , -- No such command
"cat>/dev/null" , -- Normal exit
"exit 3" , -- Non-zero exit
"kill -HUP $$" , -- shell or exec'd command dies with signal
"sh -c 'kill -HUP $$'" , -- subprocess dies with signal
};
function debug_out( val )
if type(val) == "boolean" then -- Lua 5.1 returned boolean
val = val and "true" or "false";
else
val = val or "nil";
end
return val;
end
io.write( "\nLua version: ", _VERSION, "\n\n" );
for _, cmd in ipairs(cmds)
do
local file = assert( io.popen( cmd, "w" ) );
file:write( "Hello.\n" );
local rc1, rc2 = file:close();
io.write( "cmd: ", cmd,
"\n rc1: ", debug_out(rc1),
"\n rc2: ", debug_out(rc2), "\n\n" );
end