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Handle GEOM::ident attribute by attaching 'sX' string at the end of ident

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received from the underlying provider, where X is pp->index value.

OK'ed by:	phk
This commit is contained in:
Pawel Jakub Dawidek 2007-05-05 17:52:22 +00:00
parent 5e16a4866f
commit a04c28bdd9
1 changed files with 32 additions and 0 deletions
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32
sys/geom/geom_slice.c
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@ -171,6 +171,28 @@ g_slice_finish_hot(struct bio *bp)
return;
}
static void
g_slice_done(struct bio *bp)
{
KASSERT(bp->bio_cmd == BIO_GETATTR &&
strcmp(bp->bio_attribute, "GEOM::ident") == 0,
("bio_cmd=0x%x bio_attribute=%s", bp->bio_cmd, bp->bio_attribute));
if (bp->bio_error == 0 && bp->bio_data[0] != '\0') {
char idx[8];
/* Add index to the ident received. */
snprintf(idx, sizeof(idx), "s%d",
bp->bio_parent->bio_to->index);
if (strlcat(bp->bio_data, idx, bp->bio_length) >=
bp->bio_length) {
bp->bio_error = EFAULT;
}
}
g_std_done(bp);
}
static void
g_slice_start(struct bio *bp)
{
@ -251,6 +273,16 @@ g_slice_start(struct bio *bp)
/* Give the real method a chance to override */
if (gsp->start != NULL && gsp->start(bp))
return;
if (!strcmp("GEOM::ident", bp->bio_attribute)) {
bp2 = g_clone_bio(bp);
if (bp2 == NULL) {
g_io_deliver(bp, ENOMEM);
return;
}
bp2->bio_done = g_slice_done;
g_io_request(bp2, cp);
return;
}
if (!strcmp("GEOM::kerneldump", bp->bio_attribute)) {
struct g_kerneldump *gkd;