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implement Fsmodule;
include "sys.m";
sys: Sys;
include "draw.m";
include "sh.m";
sh: Sh;
Context: import sh;
include "fslib.m";
fslib: Fslib;
Option, Value, Gatechan, Gatequery, Report, Nilentry: import fslib;
types(): string
{
return "pc-p-P";
}
badmod(p: string)
{
sys->fprint(sys->fildes(2), "fs: query: cannot load %s: %r\n", p);
raise "fail:bad module";
}
init()
{
sys = load Sys Sys->PATH;
fslib = load Fslib Fslib->PATH;
if(fslib == nil)
badmod(Fslib->PATH);
sh = load Sh Sh->PATH;
if(sh == nil)
badmod(Sh->PATH);
}
run(drawctxt: ref Draw->Context, nil: ref Report,
opts: list of Option, args: list of ref Value): ref Value
{
pflag := 0;
for(; opts != nil; opts = tl opts){
o := hd opts;
case o.opt {
'p' =>
pflag = 1;
'P' =>
pflag = 2;
}
}
v := ref Value.P(chan of Gatequery);
spawn querygate(drawctxt, v.i, (hd args).c().i, pflag);
v.i <-= (Nilentry, nil);
return v;
}
querygate(drawctxt: ref Draw->Context, c: Gatechan, cmd: ref Sh->Cmd, pflag: int)
{
sys->pctl(Sys->NEWFD, 0::1::2::nil);
ctxt := Context.new(drawctxt);
<-c;
argv := ref Sh->Listnode(cmd, nil) :: nil;
while((((d, p, nil), reply) := <-c).t0.t0 != nil){
ctxt.set("file", ref Sh->Listnode(nil, p) :: nil);
if(pflag)
setstatenv(ctxt, d, pflag);
err := "";
{
err = ctxt.run(argv, 0);
} exception e {
"fail:*" =>
err = e;
}
reply <-= (err == nil);
}
}
# XXX shouldn't duplicate this...
setenv(ctxt: ref Context, var: string, val: list of string)
{
ctxt.set(var, sh->stringlist2list(val));
}
setstatenv(ctxt: ref Context, dir: ref Sys->Dir, pflag: int)
{
setenv(ctxt, "mode", modes(dir.mode) :: nil);
setenv(ctxt, "uid", dir.uid :: nil);
setenv(ctxt, "mtime", string dir.mtime :: nil);
setenv(ctxt, "length", string dir.length :: nil);
if(pflag > 1){
setenv(ctxt, "name", dir.name :: nil);
setenv(ctxt, "gid", dir.gid :: nil);
setenv(ctxt, "muid", dir.muid :: nil);
setenv(ctxt, "qid", sys->sprint("16r%ubx", dir.qid.path) :: string dir.qid.vers :: nil);
setenv(ctxt, "atime", string dir.atime :: nil);
setenv(ctxt, "dtype", sys->sprint("%c", dir.dtype) :: nil);
setenv(ctxt, "dev", string dir.dev :: nil);
}
}
start(startc: chan of (string, chan of string), name: string): chan of string
{
c := chan of string;
startc <-= (name, c);
return c;
}
mtab := array[] of {
"---", "--x", "-w-", "-wx",
"r--", "r-x", "rw-", "rwx"
};
modes(mode: int): string
{
s: string;
if(mode & Sys->DMDIR)
s = "d";
else if(mode & Sys->DMAPPEND)
s = "a";
else if(mode & Sys->DMAUTH)
s = "A";
else
s = "-";
if(mode & Sys->DMEXCL)
s += "l";
else
s += "-";
s += mtab[(mode>>6)&7]+mtab[(mode>>3)&7]+mtab[mode&7];
return s;
}
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