From 378c18e5f024ac5a8aef4cb40d7c9aa9633d144c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 16:30:35 +0200 Subject: Adding upstream version 2.38.1. Signed-off-by: Daniel Baumann --- libblkid/src/partitions/ultrix.c | 99 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 libblkid/src/partitions/ultrix.c (limited to 'libblkid/src/partitions/ultrix.c') diff --git a/libblkid/src/partitions/ultrix.c b/libblkid/src/partitions/ultrix.c new file mode 100644 index 0000000..9c060be --- /dev/null +++ b/libblkid/src/partitions/ultrix.c @@ -0,0 +1,99 @@ +/* + * uktrix partition parsing code + * + * Copyright (C) 2010 Karel Zak + * + * This file may be redistributed under the terms of the + * GNU Lesser General Public License. + * + */ +#include +#include +#include +#include + +#include "partitions.h" + +#define ULTRIX_MAXPARTITIONS 8 + +#define ULTRIX_MAGIC 0x032957 +#define ULTRIX_MAGIC_STR "\x02\x29\x57" + +/* sector with partition table */ +#define ULTRIX_SECTOR ((16384 - sizeof(struct ultrix_disklabel)) >> 9) +/* position of partition table within ULTRIX_SECTOR */ +#define ULTRIX_OFFSET (512 - sizeof(struct ultrix_disklabel)) + +struct ultrix_disklabel { + int32_t pt_magic; /* magic no. indicating part. info exits */ + int32_t pt_valid; /* set by driver if pt is current */ + struct pt_info { + int32_t pi_nblocks; /* no. of sectors */ + uint32_t pi_blkoff; /* block offset for start */ + } pt_part[ULTRIX_MAXPARTITIONS]; +} __attribute__((packed)); + + +static int probe_ultrix_pt(blkid_probe pr, + const struct blkid_idmag *mag __attribute__((__unused__))) +{ + unsigned char *data; + struct ultrix_disklabel *l; + blkid_parttable tab = NULL; + blkid_partlist ls; + int i; + + data = blkid_probe_get_sector(pr, ULTRIX_SECTOR); + if (!data) { + if (errno) + return -errno; + goto nothing; + } + + l = (struct ultrix_disklabel *) (data + ULTRIX_OFFSET); + + if (l->pt_magic != ULTRIX_MAGIC || l->pt_valid != 1) + goto nothing; + + if (blkid_probe_set_magic(pr, (ULTRIX_SECTOR << 9) + ULTRIX_OFFSET, + sizeof(ULTRIX_MAGIC_STR) - 1, + (unsigned char *) ULTRIX_MAGIC_STR)) + goto err; + + 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, "ultrix", 0); + if (!tab) + goto err; + + for (i = 0; i < ULTRIX_MAXPARTITIONS; i++) { + if (!l->pt_part[i].pi_nblocks) + blkid_partlist_increment_partno(ls); + else { + if (!blkid_partlist_add_partition(ls, tab, + l->pt_part[i].pi_blkoff, + l->pt_part[i].pi_nblocks)) + goto err; + } + } + + return BLKID_PROBE_OK; +nothing: + return BLKID_PROBE_NONE; +err: + return -ENOMEM; +} + +const struct blkid_idinfo ultrix_pt_idinfo = +{ + .name = "ultrix", + .probefunc = probe_ultrix_pt, + .magics = BLKID_NONE_MAGIC +}; + -- cgit v1.2.3