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authorbigbiff <bigbiff@teamw.in>2015-01-02 01:44:14 +0100
committerDees Troy <dees_troy@teamw.in>2015-01-05 04:38:42 +0100
commit7b4c7a681cc4c0a53dc8a8baf4853e921cfbf5de (patch)
treefb69cb515cb4ab675d5850684cc402100b7a2a22 /libblkid/md.c
parentcrypto: remove unused libs and clean up makefile (diff)
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Diffstat (limited to 'libblkid/md.c')
-rw-r--r--libblkid/md.c154
1 files changed, 0 insertions, 154 deletions
diff --git a/libblkid/md.c b/libblkid/md.c
deleted file mode 100644
index 5eba94787..000000000
--- a/libblkid/md.c
+++ /dev/null
@@ -1,154 +0,0 @@
-/*
- * Linux Software RAID (md) topology
- * -- this is fallback for old systems where the topology information is not
- * exported by sysfs
- *
- * Copyright (C) 2009 Karel Zak <kzak@redhat.com>
- *
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- *
- */
-#include <errno.h>
-#include <fcntl.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#include "topology.h"
-
-#ifndef MD_MAJOR
-#define MD_MAJOR 9
-#endif
-
-#ifndef _IOT__IOTBASE_uint32_t
-#define _IOT__IOTBASE_uint32_t IOT_SIMPLE(uint32_t)
-#endif
-#define _IOT_md_array_info _IOT (_IOTS(uint32_t), 18, 0, 0, 0, 0)
-#define GET_ARRAY_INFO _IOR (MD_MAJOR, 0x11, struct md_array_info)
-
-struct md_array_info {
- /*
- * Generic constant information
- */
- uint32_t major_version;
- uint32_t minor_version;
- uint32_t patch_version;
- uint32_t ctime;
- uint32_t level;
- uint32_t size;
- uint32_t nr_disks;
- uint32_t raid_disks;
- uint32_t md_minor;
- uint32_t not_persistent;
-
- /*
- * Generic state information
- */
- uint32_t utime; /* 0 Superblock update time */
- uint32_t state; /* 1 State bits (clean, ...) */
- uint32_t active_disks; /* 2 Number of currently active disks */
- uint32_t working_disks; /* 3 Number of working disks */
- uint32_t failed_disks; /* 4 Number of failed disks */
- uint32_t spare_disks; /* 5 Number of spare disks */
-
- /*
- * Personality information
- */
- uint32_t layout; /* 0 the array's physical layout */
- uint32_t chunk_size; /* 1 chunk size in bytes */
-
-};
-
-static int is_md_device(dev_t devno)
-{
- if (major(devno) == MD_MAJOR)
- return 1;
- return blkid_driver_has_major("md", major(devno));
-}
-
-static int probe_md_tp(blkid_probe pr,
- const struct blkid_idmag *mag __attribute__((__unused__)))
-{
- int fd = -1;
- dev_t disk = 0;
- dev_t devno = blkid_probe_get_devno(pr);
- struct md_array_info md;
-
- if (!devno)
- goto nothing; /* probably not a block device */
-
- if (!is_md_device(devno))
- goto nothing;
-
- if (blkid_devno_to_wholedisk(devno, NULL, 0, &disk))
- goto nothing;
-
- if (disk == devno)
- fd = pr->fd;
- else {
- char *diskpath = blkid_devno_to_devname(disk);
-
- if (!diskpath)
- goto nothing;
-
- fd = open(diskpath, O_RDONLY|O_CLOEXEC);
- free(diskpath);
-
- if (fd == -1)
- goto nothing;
- }
-
- memset(&md, 0, sizeof(md));
-
- if (ioctl(fd, GET_ARRAY_INFO, &md))
- goto nothing;
-
- if (fd >= 0 && fd != pr->fd) {
- close(fd);
- fd = -1;
- }
-
- /*
- * Ignore levels we don't want aligned (e.g. linear)
- * and deduct disk(s) from stripe width on RAID4/5/6
- */
- switch (md.level) {
- case 6:
- md.raid_disks--;
- /* fallthrough */
- case 5:
- case 4:
- md.raid_disks--;
- /* fallthrough */
- case 1:
- case 0:
- case 10:
- break;
- default:
- goto nothing;
- }
-
- blkid_topology_set_minimum_io_size(pr, md.chunk_size);
- blkid_topology_set_optimal_io_size(pr, md.chunk_size * md.raid_disks);
-
- return 0;
-
-nothing:
- if (fd >= 0 && fd != pr->fd)
- close(fd);
- return 1;
-}
-
-const struct blkid_idinfo md_tp_idinfo =
-{
- .name = "md",
- .probefunc = probe_md_tp,
- .magics = BLKID_NONE_MAGIC
-};
-