20060303

1 files changed, 125 insertions, 0 deletions

diff --git a/os/port/devtest.c b/os/port/devtest.c
new file mode 100644
index 00000000..2c935014
--- /dev/null
+++ b/os/port/devtest.c
@@ -0,0 +1,125 @@
+/*
+ *  Test device
+ */
+#include	"u.h"
+#include	"../port/lib.h"
+#include	"mem.h"
+#include	"dat.h"
+#include	"fns.h"
+#include	"io.h"
+#include	"../port/error.h"
+#include	"libcrypt.h"
+
+#include <kernel.h>
+
+#define	DEBUG	0
+
+extern void _startup(void);
+
+enum{
+	Qdir,
+	Qkt5sum,
+	Qkerndate,
+};
+
+static
+Dirtab testtab[]={
+	".",			{ Qdir, 0, QTDIR},	0,	0555,
+	"kt5sum",		{ Qkt5sum },		0,	0444,
+	"kerndate",	{ Qkerndate },		0,	0444,
+};
+
+
+void ktsum(char *digest)
+{
+	uchar rawdigest[MD5dlen+1];
+	int i;
+	void *start =  _startup;
+	ulong size = (ulong)etext - (ulong) start;
+	md5(start, size, rawdigest, nil);
+	for (i=0; i<MD5dlen; i++)
+		sprint(&digest[2*i], "%2.2x", rawdigest[i]);
+	digest[MD5dlen*2] = 0;
+	strcat(digest, "\n");
+}
+
+static Chan*
+testattach(char *spec)
+{
+	return devattach('Z', spec);
+}
+
+static Walkqid*
+testwalk(Chan *c, Chan *nc, char **name, int nname)
+{
+	return devwalk(c, nc, name, nname, testtab, nelem(testtab), devgen);
+}
+
+static int
+teststat(Chan *c, uchar *db, int n)
+{
+	return devstat(c, db, n, testtab, nelem(testtab), devgen);
+}
+
+static Chan*
+testopen(Chan *c, int omode)
+{
+	return devopen(c, omode, testtab, nelem(testtab), devgen);
+}
+
+static void
+testclose(Chan *)
+{
+}
+
+extern ulong kerndate;
+
+static long
+testread(Chan* c, void* a, long n, vlong offset)
+{
+	char digest[MD5dlen*2+1];
+	switch ((ulong)c->qid.path) {
+	case Qdir:
+		return devdirread(c, a, n, testtab, nelem(testtab), devgen);
+	case Qkt5sum:
+		ktsum(digest);
+		return readstr(offset, a, n, digest);
+	case Qkerndate:
+		sprint(digest, "%ld\n", kerndate);
+		return readstr(offset, a, n, digest);
+	default:
+		n = 0;
+		break;
+	}
+	return n;
+}
+	
+
+static long
+testwrite(Chan*, void*, long, vlong)
+{
+	error(Ebadusefd);
+	return 0;
+}
+
+Dev testdevtab = {
+	'Z',
+	"test",
+
+	devreset,
+	devinit,
+	devshutdown,
+	testattach,
+	testwalk,
+	teststat,
+	testopen,
+	devcreate,
+	testclose,
+	testread,
+	devbread,
+	testwrite,
+	devbwrite,
+	devremove,
+	devwstat,
+};
+