anonymous_namespace{signature_scanner.cpp} Namespace Reference

Functions
uint64_t	adaptive_stride (uint64_t disk_size)
bool	is_ntfs (const std::array< unsigned char, 512 > &b)
bool	is_fat32 (const std::array< unsigned char, 512 > &b)
bool	is_exfat (const std::array< unsigned char, 512 > &b)
bool	looks_ext4 (DiskReader &reader, uint64_t offset)
bool	looks_btrfs (DiskReader &reader, uint64_t offset)

Variables
constexpr uint64_t	MiB = 1024ull * 1024ull
constexpr uint64_t	GiB = 1024ull * 1024ull * 1024ull

Function Documentation

adaptive_stride()

uint64_t anonymous_namespace{signature_scanner.cpp}::adaptive_stride

(

uint64_t

disk_size

)

Definition at line 11 of file signature_scanner.cpp.

                                             {
    if (disk_size <= 64ull * GiB) return MiB;
    if (disk_size <= 512ull * GiB) return 4ull * MiB;
    if (disk_size <= 2ull * 1024ull * GiB) return 16ull * MiB;
    return 32ull * MiB;
}

References adaptive_stride(), GiB, and MiB.

Referenced by adaptive_stride().

is_exfat()

bool anonymous_namespace{signature_scanner.cpp}::is_exfat

(

const std::array< unsigned char, 512 > &

b

)

Definition at line 26 of file signature_scanner.cpp.

                                                     {
    return std::string(reinterpret_cast<const char*>(b.data() + 3), 8) == "EXFAT   ";
}

References is_exfat().

Referenced by is_exfat().

is_fat32()

bool anonymous_namespace{signature_scanner.cpp}::is_fat32

(

const std::array< unsigned char, 512 > &

b

)

Definition at line 22 of file signature_scanner.cpp.

                                                     {
    return std::string(reinterpret_cast<const char*>(b.data() + 82), 8) == "FAT32   ";
}

References is_fat32().

Referenced by is_fat32().

is_ntfs()

bool anonymous_namespace{signature_scanner.cpp}::is_ntfs

(

const std::array< unsigned char, 512 > &

b

)

Definition at line 18 of file signature_scanner.cpp.

                                                    {
    return std::string(reinterpret_cast<const char*>(b.data() + 3), 8) == "NTFS    ";
}

References is_ntfs().

Referenced by is_ntfs().

looks_btrfs()

bool anonymous_namespace{signature_scanner.cpp}::looks_btrfs	(	DiskReader &	reader,
		uint64_t	offset )

Definition at line 35 of file signature_scanner.cpp.

                                                      {
    std::array<char, 8> sig{};
    return reader.read_at(offset + 0x10040, sig.data(), sig.size()) && std::string(sig.data(), sig.size()) == "_BHRfS_M";
}

References looks_btrfs(), and DiskReader::read_at().

Referenced by looks_btrfs().

looks_ext4()

bool anonymous_namespace{signature_scanner.cpp}::looks_ext4	(	DiskReader &	reader,
		uint64_t	offset )

Definition at line 30 of file signature_scanner.cpp.

                                                     {
    std::array<unsigned char, 2> sig{};
    return reader.read_at(offset + 1024 + 56, sig.data(), sig.size()) && sig[0] == 0x53 && sig[1] == 0xEF;
}

References looks_ext4(), and DiskReader::read_at().

Referenced by looks_ext4().

Variable Documentation

GiB

uint64_t anonymous_namespace{signature_scanner.cpp}::GiB = 1024ull * 1024ull * 1024ull

constexpr

Definition at line 9 of file signature_scanner.cpp.

Referenced by adaptive_stride().

MiB

uint64_t anonymous_namespace{signature_scanner.cpp}::MiB = 1024ull * 1024ull

constexpr

Definition at line 8 of file signature_scanner.cpp.

Referenced by adaptive_stride().