mirror of
https://github.com/kdave/btrfs-progs
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a62b7854de
All helpers and data structures that are used for device registration. Signed-off-by: David Sterba <dsterba@suse.com>
47 lines
1.2 KiB
C
47 lines
1.2 KiB
C
#ifndef __DEVICE_SCAN_H__
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#define __DEVICE_SCAN_H__
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#include "kerncompat.h"
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#include "ioctl.h"
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#define BTRFS_SCAN_MOUNTED (1ULL << 0)
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#define BTRFS_SCAN_LBLKID (1ULL << 1)
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#define BTRFS_UPDATE_KERNEL 1
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#define BTRFS_ARG_UNKNOWN 0
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#define BTRFS_ARG_MNTPOINT 1
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#define BTRFS_ARG_UUID 2
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#define BTRFS_ARG_BLKDEV 3
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#define BTRFS_ARG_REG 4
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#define SEEN_FSID_HASH_SIZE 256
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struct btrfs_root;
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struct btrfs_trans_handle;
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struct seen_fsid;
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struct DIR;
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struct seen_fsid {
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u8 fsid[BTRFS_FSID_SIZE];
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struct seen_fsid *next;
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DIR *dirstream;
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int fd;
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};
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int btrfs_scan_devices(void);
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int btrfs_register_one_device(const char *fname);
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int btrfs_register_all_devices(void);
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int btrfs_add_to_fsid(struct btrfs_trans_handle *trans,
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struct btrfs_root *root, int fd, const char *path,
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u64 device_total_bytes, u32 io_width, u32 io_align,
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u32 sectorsize);
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int btrfs_device_already_in_root(struct btrfs_root *root, int fd,
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int super_offset);
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int is_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[]);
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int add_seen_fsid(u8 *fsid, struct seen_fsid *seen_fsid_hash[],
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int fd, DIR *dirstream);
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void free_seen_fsid(struct seen_fsid *seen_fsid_hash[]);
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#endif
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