static vdev_t *
vdev_lookup_by_path(vdev_t *vd, const char *name)
{
vdev_t *mvd;
int c;
char pathbuf[MAXPATHLEN];
char *lookup_name;
int err = 0;
if (!vd) return NULL;
// Check both strings are valid
if (name && *name &&
vd->vdev_path && vd->vdev_path[0]) {
int off;
struct vnode *vp;
lookup_name = vd->vdev_path;
// We need to resolve symlinks here to get the final source name
dprintf("ZFS: Looking up '%s'\n", vd->vdev_path);
if ((err = vnode_lookup(vd->vdev_path, 0,
&vp, vfs_context_current())) == 0) {
int len = MAXPATHLEN;
if ((err = vn_getpath(vp, pathbuf, &len)) == 0) {
dprintf("ZFS: '%s' resolved name is '%s'\n",
vd->vdev_path, pathbuf);
lookup_name = pathbuf;
}
vnode_put(vp);
}
if (err) dprintf("ZFS: Lookup failed %d\n", err);
// Skip /dev/ or not?
strncmp("/dev/", lookup_name, 5) == 0 ? off=5 : off=0;
dprintf("ZFS: vdev '%s' == '%s' ?\n", name,
&lookup_name[off]);
if (!strcmp(name, &lookup_name[off])) return vd;
}
for (c = 0; c < vd->vdev_children; c++)
if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], name)) !=
NULL)
return (mvd);
return (NULL);
}
static vdev_t *
vdev_lookup_by_path(vdev_t *vd, const char *name)
{
vdev_t *mvd;
int c;
char *lookup_name;
vdev_disk_t *dvd = NULL;
if (!vd) return NULL;
dvd = (vdev_disk_t *)vd->vdev_tsd;
// Check both strings are valid
if (name && *name && dvd &&
vd->vdev_path && vd->vdev_path[0]) {
int off;
// Try normal path "vdev_path" or the readlink resolved
lookup_name = vd->vdev_path;
// Skip /dev/ or not?
strncmp("/dev/", lookup_name, 5) == 0 ? off=5 : off=0;
dprintf("ZFS: vdev '%s' == '%s' ?\n", name,
&lookup_name[off]);
if (!strcmp(name, &lookup_name[off])) return vd;
lookup_name = dvd->vd_readlinkname;
// Skip /dev/ or not?
strncmp("/dev/", lookup_name, 5) == 0 ? off=5 : off=0;
dprintf("ZFS: vdev '%s' == '%s' ?\n", name,
&lookup_name[off]);
if (!strcmp(name, &lookup_name[off])) return vd;
}
for (c = 0; c < vd->vdev_children; c++)
if ((mvd = vdev_lookup_by_path(vd->vdev_child[c], name)) !=
NULL)
return (mvd);
return (NULL);
}
/*
* Callback for device termination events, ie, disks removed.
*/
bool IOkit_disk_removed_callback(void* target,
void* refCon,
IOService* newService,
IONotifier* notifier)
{
OSObject *prop = 0;
OSString* bsdnameosstr = 0;
prop = newService->getProperty(kIOBSDNameKey, gIOServicePlane,
kIORegistryIterateRecursively);
if (prop) {
spa_t *spa = NULL;
bsdnameosstr = OSDynamicCast(OSString, prop);
printf("ZFS: Device removal detected: '%s'\n",
bsdnameosstr->getCStringNoCopy());
for (spa = spa_next(NULL);
spa != NULL; spa = spa_next(spa)) {
vdev_t *vd;
dprintf("ZFS: Scanning pool '%s'\n", spa_name(spa));
vd = vdev_lookup_by_path(spa->spa_root_vdev,
bsdnameosstr->getCStringNoCopy());
if (vd && vd->vdev_path) {
printf("ZFS: Device '%s' removal requested\n",
vd->vdev_path);
(void) thread_create(NULL, 0, vdev_close_thread,
vd, 0, &p0,
TS_RUN, minclsyspri);
vd->vdev_remove_wanted = B_TRUE;
spa_async_request(spa, SPA_ASYNC_REMOVE);
break;
}
} // for all spa
} // if has BSDname
return true;
}
