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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 14:30:35 +0000
commit378c18e5f024ac5a8aef4cb40d7c9aa9633d144c (patch)
tree44dfb6ca500d32cabd450649b322a42e70a30683 /libblkid/src/partitions/sun.c
parentInitial commit. (diff)
downloadutil-linux-378c18e5f024ac5a8aef4cb40d7c9aa9633d144c.tar.xz
util-linux-378c18e5f024ac5a8aef4cb40d7c9aa9633d144c.zip
Adding upstream version 2.38.1.upstream/2.38.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'libblkid/src/partitions/sun.c')
-rw-r--r--libblkid/src/partitions/sun.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/libblkid/src/partitions/sun.c b/libblkid/src/partitions/sun.c
new file mode 100644
index 0000000..058a663
--- /dev/null
+++ b/libblkid/src/partitions/sun.c
@@ -0,0 +1,125 @@
+/*
+ * sun (solaris-sparc) partition parsing code
+ *
+ * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
+ *
+ * This file may be redistributed under the terms of the
+ * GNU Lesser General Public License.
+ */
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <stddef.h>
+
+#include "pt-sun.h"
+#include "partitions.h"
+
+static int probe_sun_pt(blkid_probe pr,
+ const struct blkid_idmag *mag __attribute__((__unused__)))
+{
+ struct sun_disklabel *l;
+ struct sun_partition *p;
+ blkid_parttable tab = NULL;
+ blkid_partlist ls;
+ uint16_t nparts;
+ uint64_t spc;
+ int i, use_vtoc;
+
+ l = (struct sun_disklabel *) blkid_probe_get_sector(pr, 0);
+ if (!l) {
+ if (errno)
+ return -errno;
+ goto nothing;
+ }
+
+ if (sun_pt_checksum(l)) {
+ DBG(LOWPROBE, ul_debug(
+ "detected corrupted sun disk label -- ignore"));
+ goto nothing;
+ }
+
+ if (blkid_partitions_need_typeonly(pr))
+ /* caller does not ask for details about partitions */
+ return BLKID_PROBE_OK;
+
+ ls = blkid_probe_get_partlist(pr);
+ if (!ls)
+ goto nothing;
+
+ tab = blkid_partlist_new_parttable(ls, "sun", 0);
+ if (!tab)
+ goto err;
+
+ /* sectors per cylinder (partition offset is in cylinders...) */
+ spc = (uint64_t) be16_to_cpu(l->nhead) * be16_to_cpu(l->nsect);
+
+ DBG(LOWPROBE, ul_debug("Sun VTOC sanity=%u version=%u nparts=%u",
+ be32_to_cpu(l->vtoc.sanity),
+ be32_to_cpu(l->vtoc.version),
+ be16_to_cpu(l->vtoc.nparts)));
+
+ /* Check to see if we can use the VTOC table */
+ use_vtoc = ((be32_to_cpu(l->vtoc.sanity) == SUN_VTOC_SANITY) &&
+ (be32_to_cpu(l->vtoc.version) == SUN_VTOC_VERSION) &&
+ (be16_to_cpu(l->vtoc.nparts) <= SUN_MAXPARTITIONS));
+
+ /* Use 8 partition entries if not specified in validated VTOC */
+ nparts = use_vtoc ? be16_to_cpu(l->vtoc.nparts) : SUN_MAXPARTITIONS;
+
+ /*
+ * So that old Linux-Sun partitions continue to work,
+ * allow the VTOC to be used under the additional condition ...
+ */
+ use_vtoc = use_vtoc || !(l->vtoc.sanity || l->vtoc.version || l->vtoc.nparts);
+
+ for (i = 0, p = l->partitions; i < nparts; i++, p++) {
+
+ uint64_t start, size;
+ uint16_t type = 0, flags = 0;
+ blkid_partition par;
+
+ start = be32_to_cpu(p->start_cylinder) * spc;
+ size = be32_to_cpu(p->num_sectors);
+ if (use_vtoc) {
+ type = be16_to_cpu(l->vtoc.infos[i].id);
+ flags = be16_to_cpu(l->vtoc.infos[i].flags);
+ }
+
+ if (type == SUN_TAG_WHOLEDISK || !size) {
+ blkid_partlist_increment_partno(ls);
+ continue;
+ }
+ par = blkid_partlist_add_partition(ls, tab, start, size);
+ if (!par)
+ goto err;
+
+ if (type)
+ blkid_partition_set_type(par, type);
+ if (flags)
+ blkid_partition_set_flags(par, flags);
+ }
+ return BLKID_PROBE_OK;
+
+nothing:
+ return BLKID_PROBE_NONE;
+err:
+ return -ENOMEM;
+}
+
+
+const struct blkid_idinfo sun_pt_idinfo =
+{
+ .name = "sun",
+ .probefunc = probe_sun_pt,
+ .magics =
+ {
+ {
+ .magic = "\xDA\xBE", /* big-endian magic string */
+ .len = 2,
+ .sboff = offsetof(struct sun_disklabel, magic)
+ },
+ { NULL }
+ }
+};
+