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rc: simplify execfinit() / Xrdfn() using the globber to lookup /env/fn'#'*

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This commit is contained in:
cinap_lenrek 2016-05-16 19:57:53 +02:00
parent ce7f7d3ab9
commit b15430979d
1 changed files with 15 additions and 39 deletions
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54
sys/src/cmd/rc/plan9.c
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@ -152,42 +152,20 @@ Vinit(void)
}
close(dir);
}
int envdir;
void
Xrdfn(void)
{
int f, len;
Dir *e;
char envname[Maxenvname];
static Dir *ent, *allocent;
static int nent;
for(;;){
if(nent == 0){
free(allocent);
nent = dirread(envdir, &allocent);
ent = allocent;
}
if(nent <= 0)
break;
while(nent){
e = ent++;
nent--;
len = e->length;
if(len && strncmp(e->name, "fn#", 3)==0){
snprint(envname, sizeof envname, "/env/%s", e->name);
if((f = open(envname, 0))>=0){
execcmds(openfd(f));
return;
}
}
}
if(runq->argv->words == 0)
poplist();
else {
int f = open(runq->argv->words->word, 0);
popword();
runq->pc--;
if(f>=0) execcmds(openfd(f));
}
close(envdir);
Xreturn();
}
union code rdfns[4];
union code rdfns[8];
void
execfinit(void)
@ -195,17 +173,15 @@ execfinit(void)
static int first = 1;
if(first){
rdfns[0].i = 1;
rdfns[1].f = Xrdfn;
rdfns[2].f = Xjump;
rdfns[3].i = 1;
rdfns[1].f = Xmark;
rdfns[2].f = Xglobs;
rdfns[4].i = Globsize(rdfns[3].s = "/env/fn#\001*");
rdfns[5].f = Xglob;
rdfns[6].f = Xrdfn;
rdfns[7].f = Xreturn;
first = 0;
}
Xpopm();
envdir = open("/env", 0);
if(envdir<0){
pfmt(err, "rc: can't open /env: %r\n");
return;
}
poplist();
start(rdfns, 1, runq->local);
}