diff options
| author | Pawel Jakub Dawidek <pjd@FreeBSD.org> | 2005-12-08 23:06:59 +0000 |
|---|---|---|
| committer | Pawel Jakub Dawidek <pjd@FreeBSD.org> | 2005-12-08 23:06:59 +0000 |
| commit | 24e1fdcd1a69eee6390b0cdfa7dfb00d78c5b7bd (patch) | |
| tree | 3eb73d101829707395e3e10ba0b0b85dc18c0e04 /sys/geom/zero | |
| parent | df3d5a19fcb4015fa20b062d1785582e1367f82f (diff) | |
| download | src-24e1fdcd1a69eee6390b0cdfa7dfb00d78c5b7bd.tar.gz src-24e1fdcd1a69eee6390b0cdfa7dfb00d78c5b7bd.zip | |
- Allow to specify the byte which will be used for filling read buffer.
- Improve sysctl description a bit.
Submitted by: Ivan Voras <ivoras@gmail.com>
Notes
Notes:
svn path=/head/; revision=153251
Diffstat (limited to 'sys/geom/zero')
| -rw-r--r-- | sys/geom/zero/g_zero.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/geom/zero/g_zero.c b/sys/geom/zero/g_zero.c index d45837918963..4fd7849ccc95 100644 --- a/sys/geom/zero/g_zero.c +++ b/sys/geom/zero/g_zero.c @@ -42,9 +42,12 @@ SYSCTL_DECL(_kern_geom); SYSCTL_NODE(_kern_geom, OID_AUTO, zero, CTLFLAG_RW, 0, "GEOM_ZERO stuff"); -static u_int g_zero_clear = 1; -SYSCTL_UINT(_kern_geom_zero, OID_AUTO, clear, CTLFLAG_RW, &g_zero_clear, 0, - "Zero-fill bio_data."); +static int g_zero_clear = 1; +SYSCTL_INT(_kern_geom_zero, OID_AUTO, clear, CTLFLAG_RW, &g_zero_clear, 0, + "Clear read data buffer"); +static int g_zero_byte = 0; +SYSCTL_INT(_kern_geom_zero, OID_AUTO, byte, CTLFLAG_RW, &g_zero_byte, 0, + "Byte (octet) value to clear the buffers with"); static void g_zero_start(struct bio *bp) @@ -54,7 +57,7 @@ g_zero_start(struct bio *bp) switch (bp->bio_cmd) { case BIO_READ: if (g_zero_clear) - bzero(bp->bio_data, bp->bio_length); + memset(bp->bio_data, g_zero_byte, bp->bio_length); /* FALLTHROUGH */ case BIO_DELETE: case BIO_WRITE: |