Expose stripe offset and stripe size through libgeom and geom(8) userland

utilities.

Reviewed by:	pjd, mav (earlier version)

lib/libgeom/geom_util.c

@@ -113,6 +113,32 @@ g_sectorsize(int fd)
 	return ((ssize_t)sectorsize);
 }
 
+/*
+ * Return stripe size of the given provider.
+ */
+off_t
+g_stripesize(int fd)
+{
+	off_t stripesize;
+
+	if (g_ioctl_arg(fd, DIOCGSTRIPESIZE, &stripesize) == -1)
+		return (-1);
+	return (stripesize);
+}
+
+/*
+ * Return stripe size of the given provider.
+ */
+off_t
+g_stripeoffset(int fd)
+{
+	off_t stripeoffset;
+
+	if (g_ioctl_arg(fd, DIOCGSTRIPEOFFSET, &stripeoffset) == -1)
+		return (-1);
+	return (stripeoffset);
+}
+
 /*
  * Return the correct provider name.
  */

lib/libgeom/geom_xml2tree.c

@@ -230,6 +230,16 @@ EndElement(void *userData, const char *name)
 		free(p);
 		return;
 	}
+	if (!strcmp(name, "stripesize") && mt->provider != NULL) {
+		mt->provider->lg_stripesize = strtoumax(p, NULL, 0);
+		free(p);
+		return;
+	}
+	if (!strcmp(name, "stripeoffset") && mt->provider != NULL) {
+		mt->provider->lg_stripeoffset = strtoumax(p, NULL, 0);
+		free(p);
+		return;
+	}
 
 	if (!strcmp(name, "config")) {
 		mt->config = NULL;

lib/libgeom/libgeom.3

@@ -28,7 +28,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd September 8, 2008
+.Dd January 16, 2010
 .Dt LIBGEOM 3
 .Os
 .Sh NAME
@@ -50,6 +50,8 @@
 .Nm g_close ,
 .Nm g_mediasize ,
 .Nm g_sectorsize ,
+.Nm g_stripeoffset ,
+.Nm g_stripesize ,
 .Nm g_flush ,
 .Nm g_delete ,
 .Nm g_device_path ,
@@ -101,6 +103,10 @@
 .Fn g_mediasize "int fd"
 .Ft ssize_t
 .Fn g_sectorsize "int fd"
+.Ft ssize_t
+.Fn g_stripeoffset "int fd"
+.Ft ssize_t
+.Fn g_stripesize "int fd"
 .Ft int
 .Fn g_flush "int fd"
 .Ft int
@@ -297,6 +303,14 @@ The
 function returns sector size of the given provider.
 .Pp
 The
+.Fn g_stripeoffset
+function returns stripe size of the given provider.
+.Pp
+The
+.Fn g_stripesize
+function returns stripe size of the given provider.
+.Pp
+The
 .Fn g_flush
 function sends
 .Dv BIO_FLUSH

lib/libgeom/libgeom.h

@@ -123,6 +123,8 @@ struct gprovider {
 	char			*lg_mode;
 	off_t			lg_mediasize;
 	u_int			lg_sectorsize;
+	off_t			lg_stripeoffset;
+	off_t			lg_stripesize;
 	struct gconf		lg_config;
 };
 
@@ -149,6 +151,8 @@ int g_open(const char *, int);
 int g_close(int);
 off_t g_mediasize(int);
 ssize_t g_sectorsize(int);
+off_t g_stripeoffset(int);
+off_t g_stripesize(int);
 int g_flush(int);
 int g_delete(int, off_t, off_t);
 int g_get_ident(int, char *, size_t);

sbin/geom/core/geom.c

@@ -772,6 +772,10 @@ list_one_provider(struct gprovider *pp, const char *prefix)
 	printf("%sMediasize: %jd (%s)\n", prefix, (intmax_t)pp->lg_mediasize,
 	    buf);
 	printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize);
+	if (pp->lg_stripesize > 0) {
+		printf("%sStripesize: %ju\n", prefix, pp->lg_stripesize);
+		printf("%sStripeoffset: %ju\n", prefix, pp->lg_stripeoffset);
+	}
 	printf("%sMode: %s\n", prefix, pp->lg_mode);
 	LIST_FOREACH(conf, &pp->lg_config, lg_config) {
 		printf("%s%s: %s\n", prefix, conf->lg_name, conf->lg_val);
@@ -796,6 +800,10 @@ list_one_consumer(struct gconsumer *cp, const char *prefix)
 		printf("%sMediasize: %jd (%s)\n", prefix,
 		    (intmax_t)pp->lg_mediasize, buf);
 		printf("%sSectorsize: %u\n", prefix, pp->lg_sectorsize);
+		if (pp->lg_stripesize > 0) {
+			printf("%sStripesize: %ju\n", prefix, pp->lg_stripesize);
+			printf("%sStripeoffset: %ju\n", prefix, pp->lg_stripeoffset);
+		}
 		printf("%sMode: %s\n", prefix, cp->lg_mode);
 	}
 	LIST_FOREACH(conf, &cp->lg_config, lg_config) {

sys/geom/geom_dump.c

@@ -185,6 +185,10 @@ g_conf_provider(struct sbuf *sb, struct g_provider *pp)
 	sbuf_printf(sb, "\t  <mediasize>%jd</mediasize>\n",
 	    (intmax_t)pp->mediasize);
 	sbuf_printf(sb, "\t  <sectorsize>%u</sectorsize>\n", pp->sectorsize);
+	if (pp->stripesize > 0) {
+		sbuf_printf(sb, "\t  <stripesize>%u</stripesize>\n", pp->stripesize);
+		sbuf_printf(sb, "\t  <stripeoffset>%u</stripeoffset>\n", pp->stripeoffset);
+	}
 	if (pp->geom->flags & G_GEOM_WITHER)
 		;
 	else if (pp->geom->dumpconf != NULL) {