diff options
Diffstat (limited to 'sys/kern/subr_disk.c')
| -rw-r--r-- | sys/kern/subr_disk.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/sys/kern/subr_disk.c b/sys/kern/subr_disk.c index abaacf364d1..fbdf1a78d30 100644 --- a/sys/kern/subr_disk.c +++ b/sys/kern/subr_disk.c @@ -1,4 +1,4 @@ -/* $OpenBSD: subr_disk.c,v 1.108 2010/09/08 14:47:12 jsing Exp $ */ +/* $OpenBSD: subr_disk.c,v 1.109 2010/09/08 15:16:22 jsing Exp $ */ /* $NetBSD: subr_disk.c,v 1.17 1996/03/16 23:17:08 christos Exp $ */ /* @@ -1394,3 +1394,28 @@ disk_map(char *path, char *mappath, int size, int flags) return 0; } + +/* + * Lookup a disk device and verify that it has completed attaching. + */ +struct device * +disk_lookup(struct cfdriver *cd, int unit) +{ + struct device *dv; + struct disk *dk; + + dv = device_lookup(cd, unit); + if (dv == NULL) + return (NULL); + + TAILQ_FOREACH(dk, &disklist, dk_link) + if (dk->dk_device == dv) + break; + + if (dk == NULL) { + device_unref(dv); + return (NULL); + } + + return (dv); +} |