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Implement CONFIG_GEOM verbs "write label" and "write bootcode".

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This commit is contained in:
phk 2003-04-23 08:23:01 +00:00
parent cc4a9d46fe
commit 15a332bfd6
1 changed files with 83 additions and 0 deletions
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83
sys/geom/geom_sunlabel.c
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@ -147,6 +147,88 @@ g_sunlabel_dumpconf(struct sbuf *sb, const char *indent, struct g_geom *gp, stru
}
}
struct h0h0 {
struct g_geom *gp;
struct g_sunlabel_softc *ms;
u_char *label;
int error;
};
static void
g_sunlabel_callconfig(void *arg, int flag)
{
struct h0h0 *hp;
hp = arg;
hp->error = g_sunlabel_modify(hp->gp, hp->ms, hp->label);
if (!hp->error)
hp->error = g_write_data(LIST_FIRST(&hp->gp->consumer),
0, hp->label, SUN_SIZE);
wakeup(hp);
}
/*
* NB! curthread is user process which GCTL'ed.
*/
static int
g_sunlabel_config(struct gctl_req *req, struct g_geom *gp, const char *verb)
{
u_char *label;
int error, i;
struct h0h0 h0h0;
struct g_slicer *gsp;
struct g_consumer *cp;
g_topology_assert();
cp = LIST_FIRST(&gp->consumer);
gsp = gp->softc;
if (!strcmp(verb, "write label")) {
label = gctl_get_paraml(req, "label", SUN_SIZE);
if (label == NULL)
return (EINVAL);
h0h0.gp = gp;
h0h0.ms = gsp->softc;
h0h0.label = label;
h0h0.error = -1;
/* XXX: Does this reference register with our selfdestruct code ? */
error = g_access_rel(cp, 1, 1, 1);
if (error)
return (error);
error = g_call_me(g_sunlabel_callconfig, &h0h0, gp, NULL);
if (!error) {
g_topology_unlock();
do
tsleep(&h0h0, PRIBIO, "g_sunlabel_config", hz);
while (h0h0.error == -1);
g_topology_lock();
error = h0h0.error;
}
g_access_rel(cp, -1, -1, -1);
g_free(label);
} else if (!strcmp(verb, "write bootcode")) {
label = gctl_get_paraml(req, "bootcode", SUN_BOOTSIZE);
if (label == NULL)
return (EINVAL);
/* XXX: Does this reference register with our selfdestruct code ? */
error = g_access_rel(cp, 1, 1, 1);
if (error)
return (error);
for (i = 0; i < SUN_NPART; i++) {
if (gsp->slices[i].length <= SUN_BOOTSIZE)
continue;
g_write_data(cp,
gsp->slices[i].offset + SUN_SIZE, label + SUN_SIZE,
SUN_BOOTSIZE - SUN_SIZE);
}
g_access_rel(cp, -1, -1, -1);
g_free(label);
} else {
return (gctl_error(req, "Unknown verb parameter"));
}
return (error);
}
static struct g_geom *
g_sunlabel_taste(struct g_class *mp, struct g_provider *pp, int flags)
{
@ -201,6 +283,7 @@ g_sunlabel_taste(struct g_class *mp, struct g_provider *pp, int flags)
static struct g_class g_sunlabel_class = {
.name = SUNLABEL_CLASS_NAME,
.taste = g_sunlabel_taste,
.config_geom = g_sunlabel_config,
G_CLASS_INITIALIZER
};