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https://github.com/linux-apfs/apfsprogs.git
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Ernesto A. Fernández
b9efac41c4
Now that I've actually implemented snapshots in the driver, I can see that the way extent reference counting is handled in the fsck makes no sense at all. Update extents mean that the number of references can be different for each block of a physical extent. So now, the extents listed in the table will get split when it becomes necessary, and each fraction will have its own refcnt. Signed-off-by: Ernesto A. Fernández <ernesto@corellium.com>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
/*
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* Copyright (C) 2019 Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
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*
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* Definitions that make it easier to reuse code from the kernel module.
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*/
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#ifndef _TYPES_H
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#define _TYPES_H
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#define __CHECK_ENDIAN__ /* Required by linux/types.h when running sparse */
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#include <linux/types.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <sys/types.h>
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#define EAGAIN 1
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#define ENODATA 2
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#define ENOMEM 3
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#define EINVAL 4
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#define __packed __attribute__((packed))
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#ifdef __CHECKER__
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#define __force __attribute__((force))
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#else /* __CHECKER */
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#define __force
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#endif /* __CHECKER__ */
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#define likely(x) __builtin_expect(!!(x), 1)
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typedef uint8_t u8;
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typedef uint16_t u16;
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typedef uint32_t u32;
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typedef uint64_t u64;
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#define cpu_to_le16(x) ((__force __le16)(u16)(x))
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#define le16_to_cpu(x) ((__force u16)(__le16)(x))
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#define cpu_to_le32(x) ((__force __le32)(u32)(x))
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#define le32_to_cpu(x) ((__force u32)(__le32)(x))
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#define cpu_to_le64(x) ((__force __le64)(u64)(x))
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#define le64_to_cpu(x) ((__force u64)(__le64)(x))
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static inline uint32_t be32_to_cpu(__be32 in)
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{
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uint32_t out = 0;
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uint8_t *in_p = (uint8_t *)∈
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uint8_t *out_p = (uint8_t *)&out;
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out_p[0] = in_p[3];
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out_p[1] = in_p[2];
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out_p[2] = in_p[1];
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out_p[3] = in_p[0];
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return out;
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}
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#define DIV_ROUND_UP(n, d) (((n) + (d) - 1) / (d))
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#define __ROUND_MASK(x, y) ((__typeof__(x))((y)-1))
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#define ROUND_UP(x, y) ((((x)-1) | __ROUND_MASK(x, y))+1)
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#define MIN(X, Y) ((X) <= (Y) ? (X) : (Y))
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#define NSEC_PER_SEC 1000000000L
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typedef u32 unicode_t;
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#endif /* _TYPES_H */
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