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| author | pjd <pjd@FreeBSD.org> | 2007-05-05 16:35:22 +0000 |
|---|---|---|
| committer | pjd <pjd@FreeBSD.org> | 2007-05-05 16:35:22 +0000 |
| commit | 835266e08861e25f33237e630f3095cc6ee3ee79 (patch) | |
| tree | 798a84202a3b98f800224e5bfca306eec30270fd /sys/geom/geom_io.c | |
| parent | ddfa2416f5fd67d07e1e660be1dbdc2e15598197 (diff) | |
| download | FreeBSD-src-835266e08861e25f33237e630f3095cc6ee3ee79.zip FreeBSD-src-835266e08861e25f33237e630f3095cc6ee3ee79.tar.gz | |
Implement g_delete_data() similar to g_read_data() and g_write_data().
OK'ed by: phk
Diffstat (limited to 'sys/geom/geom_io.c')
| -rw-r--r-- | sys/geom/geom_io.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/sys/geom/geom_io.c b/sys/geom/geom_io.c index beb74fe..a69d764 100644 --- a/sys/geom/geom_io.c +++ b/sys/geom/geom_io.c @@ -646,6 +646,28 @@ g_write_data(struct g_consumer *cp, off_t offset, void *ptr, off_t length) return (error); } +int +g_delete_data(struct g_consumer *cp, off_t offset, off_t length) +{ + struct bio *bp; + int error; + + KASSERT(length > 0 && length >= cp->provider->sectorsize && + length <= MAXPHYS, ("g_delete_data(): invalid length %jd", + (intmax_t)length)); + + bp = g_alloc_bio(); + bp->bio_cmd = BIO_DELETE; + bp->bio_done = NULL; + bp->bio_offset = offset; + bp->bio_length = length; + bp->bio_data = NULL; + g_io_request(bp, cp); + error = biowait(bp, "gdelete"); + g_destroy_bio(bp); + return (error); +} + void g_print_bio(struct bio *bp) { |
