diff --git a/sys/geom/geom.h b/sys/geom/geom.h index b261693b7e2..9f3c4d98cb4 100644 --- a/sys/geom/geom.h +++ b/sys/geom/geom.h @@ -120,6 +120,15 @@ struct g_class { LIST_HEAD(,g_geom) geom; }; +/* + * The g_geom_alias is a list node for aliases for the geom name + * for device node creation. + */ +struct g_geom_alias { + LIST_ENTRY(g_geom_alias) ga_next; + const char *ga_alias; +}; + #define G_VERSION_00 0x19950323 #define G_VERSION_01 0x20041207 /* add fflag to g_ioctl_t */ #define G_VERSION G_VERSION_01 @@ -150,6 +159,7 @@ struct g_geom { unsigned flags; #define G_GEOM_WITHER 1 #define G_GEOM_VOLATILE_BIO 2 + LIST_HEAD(,g_geom_alias) aliases; }; /* @@ -269,6 +279,7 @@ void g_destroy_provider(struct g_provider *pp); void g_detach(struct g_consumer *cp); void g_error_provider(struct g_provider *pp, int error); struct g_provider *g_provider_by_name(char const *arg); +void g_geom_add_alias(struct g_geom *gp, const char *alias); int g_getattr__(const char *attr, struct g_consumer *cp, void *var, int len); #define g_getattr(a, c, v) g_getattr__((a), (c), (v), sizeof *(v)) int g_handleattr(struct bio *bp, const char *attribute, const void *val, diff --git a/sys/geom/geom_dev.c b/sys/geom/geom_dev.c index c95fc39c191..b99c2872675 100644 --- a/sys/geom/geom_dev.c +++ b/sys/geom/geom_dev.c @@ -315,10 +315,11 @@ static struct g_geom * g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused) { struct g_geom *gp; + struct g_geom_alias *gap; struct g_consumer *cp; struct g_dev_softc *sc; int error; - struct cdev *dev; + struct cdev *dev, *adev; char buf[SPECNAMELEN + 6]; g_trace(G_T_TOPOLOGY, "dev_taste(%s,%s)", mp->name, pp->name); @@ -357,6 +358,23 @@ g_dev_taste(struct g_class *mp, struct g_provider *pp, int insist __unused) g_dev_attrchanged(cp, "GEOM::physpath"); snprintf(buf, sizeof(buf), "cdev=%s", gp->name); devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK); + /* + * Now add all the aliases for this drive + */ + LIST_FOREACH(gap, &pp->geom->aliases, ga_next) { + error = make_dev_alias_p(MAKEDEV_CHECKNAME | MAKEDEV_WAITOK, &adev, dev, + "%s", gap->ga_alias); + if (error) { + printf("%s: make_dev_alias_p() failed (name=%s, error=%d)\n", + __func__, gap->ga_alias, error); + continue; + } + adev->si_flags |= SI_UNMAPPED; + adev->si_iosize_max = dev->si_iosize_max; + adev->si_drv2 = dev->si_drv2; + snprintf(buf, sizeof(buf), "cdev=%s", gap->ga_alias); + devctl_notify_f("GEOM", "DEV", "CREATE", buf, M_WAITOK); + } return (gp); } diff --git a/sys/geom/geom_dump.c b/sys/geom/geom_dump.c index 28649feee2e..4e0b4b4345c 100644 --- a/sys/geom/geom_dump.c +++ b/sys/geom/geom_dump.c @@ -234,6 +234,7 @@ g_conf_geom(struct sbuf *sb, struct g_geom *gp, struct g_provider *pp, struct g_ { struct g_consumer *cp2; struct g_provider *pp2; + struct g_geom_alias *gap; sbuf_printf(sb, " \n", gp); sbuf_printf(sb, " \n", gp->class); @@ -259,6 +260,11 @@ g_conf_geom(struct sbuf *sb, struct g_geom *gp, struct g_provider *pp, struct g_ continue; g_conf_provider(sb, pp2); } + LIST_FOREACH(gap, &gp->aliases, ga_next) { + sbuf_printf(sb, " \n"); + g_conf_printf_escaped(sb, "%s", gap->ga_alias); + sbuf_printf(sb, " \n"); + } sbuf_printf(sb, " \n"); } diff --git a/sys/geom/geom_subr.c b/sys/geom/geom_subr.c index 33416063eec..c22e8e08dee 100644 --- a/sys/geom/geom_subr.c +++ b/sys/geom/geom_subr.c @@ -347,6 +347,7 @@ g_new_geomf(struct g_class *mp, const char *fmt, ...) gp->rank = 1; LIST_INIT(&gp->consumer); LIST_INIT(&gp->provider); + LIST_INIT(&gp->aliases); LIST_INSERT_HEAD(&mp->geom, gp, geom); TAILQ_INSERT_HEAD(&geoms, gp, geoms); strcpy(gp->name, sbuf_data(sb)); @@ -367,6 +368,7 @@ g_new_geomf(struct g_class *mp, const char *fmt, ...) void g_destroy_geom(struct g_geom *gp) { + struct g_geom_alias *gap, *gaptmp; g_topology_assert(); G_VALID_GEOM(gp); @@ -380,6 +382,8 @@ g_destroy_geom(struct g_geom *gp) g_cancel_event(gp); LIST_REMOVE(gp, geom); TAILQ_REMOVE(&geoms, gp, geoms); + LIST_FOREACH_SAFE(gap, &gp->aliases, ga_next, gaptmp) + g_free(gap); g_free(gp->name); g_free(gp); } @@ -1212,6 +1216,18 @@ g_compare_names(const char *namea, const char *nameb) return (0); } +void +g_geom_add_alias(struct g_geom *gp, const char *alias) +{ + struct g_geom_alias *gap; + + gap = (struct g_geom_alias *)g_malloc( + sizeof(struct g_geom_alias) + strlen(alias) + 1, M_WAITOK); + strcpy((char *)(gap + 1), alias); + gap->ga_alias = (const char *)(gap + 1); + LIST_INSERT_HEAD(&gp->aliases, gap, ga_next); +} + #if defined(DIAGNOSTIC) || defined(DDB) /* * This function walks the mesh and returns a non-zero integer if it