These two files fell off during my previous commit: put the encoding

decoding functions for struct disklabel in a separate .c file.

1 files changed, 161 insertions, 0 deletions

diff --git a/sys/geom/geom_bsd_enc.c b/sys/geom/geom_bsd_enc.c
new file mode 100644
index 0000000..46415b8
--- /dev/null
+++ b/sys/geom/geom_bsd_enc.c
@@ -0,0 +1,161 @@
+/*-
+ * Copyright (c) 2002 Poul-Henning Kamp
+ * Copyright (c) 2002 Networks Associates Technology, Inc.
+ * All rights reserved.
+ *
+ * This software was developed for the FreeBSD Project by Poul-Henning Kamp
+ * and NAI Labs, the Security Research Division of Network Associates, Inc.
+ * under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
+ * DARPA CHATS research program.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the authors may not be used to endorse or promote
+ *    products derived from this software without specific prior written
+ *    permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ *
+ * Functions to encode and decode struct disklabel and struct partition into
+ * a bytestream of little endianess and correct packing.
+ *
+ * NB!  This file must be usable both in kernel and userland.
+ *
+ */
+
+#include <sys/types.h>
+#include <sys/endian.h>
+#include <sys/disklabel.h>
+#ifdef _KERNEL
+#include <sys/systm.h>
+#endif
+
+void
+bsd_partition_le_dec(u_char *ptr, struct partition *d)
+{
+	d->p_size = le32dec(ptr + 0);
+	d->p_offset = le32dec(ptr + 4);
+	d->p_fsize = le32dec(ptr + 8);
+	d->p_fstype = ptr[12];
+	d->p_frag = ptr[13];
+	d->p_cpg = le16dec(ptr + 14);
+}
+
+void
+bsd_disklabel_le_dec(u_char *ptr, struct disklabel *d)
+{
+	int i;
+
+	d->d_magic = le32dec(ptr + 0);
+	d->d_type = le16dec(ptr + 4);
+	d->d_subtype = le16dec(ptr + 6);
+	bcopy(ptr + 8, d->d_typename, 16);
+	bcopy(ptr + 24, d->d_packname, 16);
+	d->d_secsize = le32dec(ptr + 40);
+	d->d_nsectors = le32dec(ptr + 44);
+	d->d_ntracks = le32dec(ptr + 48);
+	d->d_ncylinders = le32dec(ptr + 52);
+	d->d_secpercyl = le32dec(ptr + 56);
+	d->d_secperunit = le32dec(ptr + 60);
+	d->d_sparespertrack = le16dec(ptr + 64);
+	d->d_sparespercyl = le16dec(ptr + 66);
+	d->d_acylinders = le32dec(ptr + 68);
+	d->d_rpm = le16dec(ptr + 72);
+	d->d_interleave = le16dec(ptr + 74);
+	d->d_trackskew = le16dec(ptr + 76);
+	d->d_cylskew = le16dec(ptr + 78);
+	d->d_headswitch = le32dec(ptr + 80);
+	d->d_trkseek = le32dec(ptr + 84);
+	d->d_flags = le32dec(ptr + 88);
+	d->d_drivedata[0] = le32dec(ptr + 92);
+	d->d_drivedata[1] = le32dec(ptr + 96);
+	d->d_drivedata[2] = le32dec(ptr + 100);
+	d->d_drivedata[3] = le32dec(ptr + 104);
+	d->d_drivedata[4] = le32dec(ptr + 108);
+	d->d_spare[0] = le32dec(ptr + 112);
+	d->d_spare[1] = le32dec(ptr + 116);
+	d->d_spare[2] = le32dec(ptr + 120);
+	d->d_spare[3] = le32dec(ptr + 124);
+	d->d_spare[4] = le32dec(ptr + 128);
+	d->d_magic2 = le32dec(ptr + 132);
+	d->d_checksum = le16dec(ptr + 136);
+	d->d_npartitions = le16dec(ptr + 138);
+	d->d_bbsize = le32dec(ptr + 140);
+	d->d_sbsize = le32dec(ptr + 144);
+	for (i = 0; i < MAXPARTITIONS; i++)
+		bsd_partition_le_dec(ptr + 148 + 16 * i, &d->d_partitions[i]);
+}
+
+void
+bsd_partition_le_enc(u_char *ptr, struct partition *d)
+{
+	le32enc(ptr + 0, d->p_size);
+	le32enc(ptr + 4, d->p_offset);
+	le32enc(ptr + 8, d->p_fsize);
+	ptr[12] = d->p_fstype;
+	ptr[13] = d->p_frag;
+	le16enc(ptr + 14, d->p_cpg);
+}
+
+void
+bsd_disklabel_le_enc(u_char *ptr, struct disklabel *d)
+{
+	int i;
+
+	le32enc(ptr + 0, d->d_magic);
+	le16enc(ptr + 4, d->d_type);
+	le16enc(ptr + 6, d->d_subtype);
+	bcopy(d->d_typename, ptr + 8, 16);
+	bcopy(d->d_packname, ptr + 24, 16);
+	le32enc(ptr + 40, d->d_secsize);
+	le32enc(ptr + 44, d->d_nsectors);
+	le32enc(ptr + 48, d->d_ntracks);
+	le32enc(ptr + 52, d->d_ncylinders);
+	le32enc(ptr + 56, d->d_secpercyl);
+	le32enc(ptr + 60, d->d_secperunit);
+	le16enc(ptr + 64, d->d_sparespertrack);
+	le16enc(ptr + 66, d->d_sparespercyl);
+	le32enc(ptr + 68, d->d_acylinders);
+	le16enc(ptr + 72, d->d_rpm);
+	le16enc(ptr + 74, d->d_interleave);
+	le16enc(ptr + 76, d->d_trackskew);
+	le16enc(ptr + 78, d->d_cylskew);
+	le32enc(ptr + 80, d->d_headswitch);
+	le32enc(ptr + 84, d->d_trkseek);
+	le32enc(ptr + 88, d->d_flags);
+	le32enc(ptr + 92, d->d_drivedata[0]);
+	le32enc(ptr + 96, d->d_drivedata[1]);
+	le32enc(ptr + 100, d->d_drivedata[2]);
+	le32enc(ptr + 104, d->d_drivedata[3]);
+	le32enc(ptr + 108, d->d_drivedata[4]);
+	le32enc(ptr + 112, d->d_spare[0]);
+	le32enc(ptr + 116, d->d_spare[1]);
+	le32enc(ptr + 120, d->d_spare[2]);
+	le32enc(ptr + 124, d->d_spare[3]);
+	le32enc(ptr + 128, d->d_spare[4]);
+	le32enc(ptr + 132, d->d_magic2);
+	le16enc(ptr + 136, d->d_checksum);
+	le16enc(ptr + 138, d->d_npartitions);
+	le32enc(ptr + 140, d->d_bbsize);
+	le32enc(ptr + 144, d->d_sbsize);
+	for (i = 0; i < MAXPARTITIONS; i++)
+		bsd_partition_le_enc(ptr + 148 + 16 * i, &d->d_partitions[i]);
+}