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Index: head/sbin/mdconfig/mdconfig.8
===================================================================
--- head/sbin/mdconfig/mdconfig.8
+++ head/sbin/mdconfig/mdconfig.8
@@ -37,7 +37,7 @@
.\"
.\" $FreeBSD$
.\"
-.Dd October 10, 2015
+.Dd August 28, 2017
.Dt MDCONFIG 8
.Os
.Sh NAME
@@ -55,6 +55,7 @@
.Op Fl u Ar unit
.Op Fl x Ar sectors/track
.Op Fl y Ar heads/cylinder
+.Op Fl L Ar label
.Nm
.Fl d
.Fl u Ar unit
@@ -189,6 +190,12 @@
options can be used to specify a synthetic geometry.
This is useful for constructing bootable images for later download to
other devices.
+.It Fl L Ar label
+Associate a label (arbitrary string) with the new memory disk.
+The label can then be inspected with
+.Bd -literal -offset indent
+.Nm Fl l v
+.Ed
.It Fl o Oo Cm no Oc Ns Ar option
Set or reset options.
.Bl -tag -width indent
Index: head/sbin/mdconfig/mdconfig.c
===================================================================
--- head/sbin/mdconfig/mdconfig.c
+++ head/sbin/mdconfig/mdconfig.c
@@ -79,7 +79,7 @@
fprintf(stderr,
"usage: mdconfig -a -t type [-n] [-o [no]option] ... [-f file]\n"
-" [-s size] [-S sectorsize] [-u unit]\n"
+" [-s size] [-S sectorsize] [-u unit] [-L label]\n"
" [-x sectors/track] [-y heads/cylinder]\n"
" mdconfig -d -u unit [-o [no]force]\n"
" mdconfig -r -u unit -s size [-o [no]force]\n"
@@ -102,15 +102,17 @@
bzero(&mdio, sizeof(mdio));
mdio.md_file = malloc(PATH_MAX);
- if (mdio.md_file == NULL)
+ mdio.md_label = malloc(PATH_MAX);
+ if (mdio.md_file == NULL || mdio.md_label == NULL)
err(1, "could not allocate memory");
vflag = 0;
bzero(mdio.md_file, PATH_MAX);
+ bzero(mdio.md_label, PATH_MAX);
if (argc == 1)
usage();
- while ((ch = getopt(argc, argv, "ab:df:lno:rs:S:t:u:vx:y:")) != -1) {
+ while ((ch = getopt(argc, argv, "ab:df:lno:rs:S:t:u:vx:y:L:")) != -1) {
switch (ch) {
case 'a':
if (action != UNSET && action != ATTACH)
@@ -243,6 +245,9 @@
case 'y':
mdio.md_fwheads = strtoul(optarg, &p, 0);
break;
+ case 'L':
+ strlcpy(mdio.md_label, optarg, PATH_MAX);
+ break;
default:
usage();
}
@@ -422,7 +427,8 @@
struct gclass *gcl;
void *sq;
int retcode, ffound, ufound;
- char *type, *file, *length;
+ char *length;
+ const char *type, *file, *label;
type = file = length = NULL;
@@ -477,10 +483,14 @@
printf("\t%s\t", type);
if (length != NULL)
md_prthumanval(length);
- if (file != NULL) {
- printf("\t%s", file);
- file = NULL;
- }
+ if (file == NULL)
+ file = "-";
+ printf("\t%s", file);
+ file = NULL;
+ label = geom_config_get(gc, "label");
+ if (label == NULL)
+ label = "";
+ printf("\t%s", label);
}
opt |= OPT_DONE;
if ((opt & OPT_LIST) && !(opt & OPT_VERBOSE))
Index: head/sys/dev/md/md.c
===================================================================
--- head/sys/dev/md/md.c
+++ head/sys/dev/md/md.c
@@ -226,6 +226,7 @@
/* MD_VNODE related fields */
struct vnode *vnode;
char file[PATH_MAX];
+ char label[PATH_MAX];
struct ucred *cred;
/* MD_SWAP related fields */
@@ -1645,6 +1646,11 @@
}
if (sc == NULL)
return (error);
+ if (mdio->md_label != NULL)
+ error = copyinstr(mdio->md_label, sc->label,
+ sizeof(sc->label), NULL);
+ if (error != 0)
+ goto err_after_new;
if (mdio->md_options & MD_AUTOUNIT)
mdio->md_unit = sc->unit;
sc->mediasize = mdio->md_mediasize;
@@ -1676,6 +1682,7 @@
error = mdcreate_null(sc, mdio, td);
break;
}
+err_after_new:
if (error != 0) {
mddestroy(sc, td);
return (error);
@@ -1721,6 +1728,11 @@
mdio->md_options = sc->flags;
mdio->md_mediasize = sc->mediasize;
mdio->md_sectorsize = sc->sectorsize;
+ error = 0;
+ if (mdio->md_label != NULL) {
+ error = copyout(sc->label, mdio->md_label,
+ strlen(sc->label) + 1);
+ }
if (sc->type == MD_VNODE ||
(sc->type == MD_PRELOAD && mdio->md_file != NULL))
error = copyout(sc->file, mdio->md_file,
@@ -1873,6 +1885,7 @@
if ((mp->type == MD_VNODE && mp->vnode != NULL) ||
(mp->type == MD_PRELOAD && mp->file[0] != '\0'))
sbuf_printf(sb, " file %s", mp->file);
+ sbuf_printf(sb, " label %s", mp->label);
} else {
sbuf_printf(sb, "%s<unit>%d</unit>\n", indent,
mp->unit);
@@ -1897,6 +1910,9 @@
g_conf_printf_escaped(sb, "%s", mp->file);
sbuf_printf(sb, "</file>\n");
}
+ sbuf_printf(sb, "%s<label>", indent);
+ g_conf_printf_escaped(sb, "%s", mp->label);
+ sbuf_printf(sb, "</label>\n");
}
}
}
Index: head/sys/sys/mdioctl.h
===================================================================
--- head/sys/sys/mdioctl.h
+++ head/sys/sys/mdioctl.h
@@ -49,7 +49,7 @@
* Ioctl definitions for memory disk pseudo-device.
*/
-#define MDNPAD 97
+#define MDNPAD 96
struct md_ioctl {
unsigned md_version; /* Structure layout version */
unsigned md_unit; /* unit number */
@@ -61,6 +61,7 @@
u_int64_t md_base; /* base address */
int md_fwheads; /* firmware heads */
int md_fwsectors; /* firmware sectors */
+ char *md_label; /* label of the device */
int md_pad[MDNPAD]; /* padding for future ideas */
};

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