shithub: npe

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fix up unsetenv

--- a/libnpe/setenv.c

+++ b/libnpe/setenv.c

@@ -17,5 +17,12 @@

 int

 unsetenv(char *name)

 {

-	return remove(name);

+	char ename[100];

+	if(name[0]=='\0' || strcmp(name, ".")==0 || strcmp(name, "..")==0 || strchr(name, '/')!=nil

+	|| strlen(name) >= sizeof(ename)-5){

+		werrstr("bad env name: %s", name);

+		return -1;

+	}

+	snprint(ename, sizeof(ename), "/env/%s", name);

+	return remove(ename);

 }

-- 

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