anonymous_namespace{ext4_recovery.cpp} Namespace Reference

Classes
struct	ExportRange
struct	Ext4Inode
struct	ExtentRef
struct	JournalDirentCandidate
class	Ext4RecoveryImpl

Functions
uint16_t	le16 (const unsigned char *p)
uint32_t	le32 (const unsigned char *p)
uint64_t	le64 (const unsigned char *p)
uint32_t	be32 (const unsigned char *p)
std::string	sanitize_path_component (const std::string &in)
template<typename ReadFn>
bool	write_ranges_to_file (ReadFn &&read_fn, const std::vector< ExportRange > &ranges, const fs::path &out_path, uint64_t expected_size, std::string &error)

Function Documentation

be32()

uint32_t anonymous_namespace{ext4_recovery.cpp}::be32

(

const unsigned char *

p

)

Definition at line 40 of file ext4_recovery.cpp.

                                      {
    return (static_cast<uint32_t>(p[0]) << 24) |
           (static_cast<uint32_t>(p[1]) << 16) |
           (static_cast<uint32_t>(p[2]) << 8) |
           static_cast<uint32_t>(p[3]);
}

References be32().

Referenced by be32(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::build_journal_replay_map(), and anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::export_journal().

le16()

uint16_t anonymous_namespace{ext4_recovery.cpp}::le16

(

const unsigned char *

p

)

Definition at line 19 of file ext4_recovery.cpp.

                                      {
    return static_cast<uint16_t>(p[0]) | (static_cast<uint16_t>(p[1]) << 8);
}

References le16().

Referenced by anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::collect_extents_from_node(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::find_inline_xattr_system_data(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::inode_extents(), le16(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::load_superblock(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::read_inode(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::recover_directory(), and anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::scan_journal_dirents().

le32()

uint32_t anonymous_namespace{ext4_recovery.cpp}::le32

(

const unsigned char *

p

)

Definition at line 23 of file ext4_recovery.cpp.

                                      {
    return static_cast<uint32_t>(p[0]) |
           (static_cast<uint32_t>(p[1]) << 8) |
           (static_cast<uint32_t>(p[2]) << 16) |
           (static_cast<uint32_t>(p[3]) << 24);
}

References le32().

Referenced by anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::collect_extents_from_node(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::find_inline_xattr_system_data(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::inode_block_map_classic(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::inode_extents(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::inode_marked_allocated(), le32(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::load_superblock(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::read_inode(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::read_u32_block(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::recover_directory(), and anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::scan_journal_dirents().

le64()

uint64_t anonymous_namespace{ext4_recovery.cpp}::le64

(

const unsigned char *

p

)

Definition at line 30 of file ext4_recovery.cpp.

                                      {
    return static_cast<uint64_t>(p[0]) |
           (static_cast<uint64_t>(p[1]) << 8) |
           (static_cast<uint64_t>(p[2]) << 16) |
           (static_cast<uint64_t>(p[3]) << 24) |
           (static_cast<uint64_t>(p[4]) << 32) |
           (static_cast<uint64_t>(p[5]) << 40) |
           (static_cast<uint64_t>(p[6]) << 48) |
           (static_cast<uint64_t>(p[7]) << 56);
}

References le64().

Referenced by le64().

sanitize_path_component()

std::string anonymous_namespace{ext4_recovery.cpp}::sanitize_path_component ( const std::string & in )

inline

Definition at line 51 of file ext4_recovery.cpp.

                                                              {
    return text_utils::sanitize_component(in);
}

References text_utils::sanitize_component(), and sanitize_path_component().

Referenced by anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::export_file(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::export_journal(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::recover_directory(), and sanitize_path_component().

write_ranges_to_file()

template<typename ReadFn>

bool anonymous_namespace{ext4_recovery.cpp}::write_ranges_to_file	(	ReadFn &&	read_fn,
		const std::vector< ExportRange > &	ranges,
		const fs::path &	out_path,
		uint64_t	expected_size,
		std::string &	error )

Definition at line 66 of file ext4_recovery.cpp.

                                            {
    std::ofstream out(out_path, std::ios::binary);
    if (!out) {
        error = trs("Unable to create output file") + std::string(": ") + out_path.string();
        return false;
    }
    std::vector<unsigned char> buffer(1024 * 1024);
    uint64_t written = 0;
    for (const auto& r : ranges) {
        uint64_t remaining = r.length;
        uint64_t cursor = r.offset;
        while (remaining > 0 && written < expected_size) {
            const uint64_t allowed = std::min<uint64_t>(remaining, expected_size - written);
            const size_t chunk = static_cast<size_t>(std::min<uint64_t>(buffer.size(), allowed));
            if (r.zero_fill) {
                std::fill(buffer.begin(), buffer.begin() + chunk, 0u);
            } else if (!read_fn(cursor, buffer.data(), chunk)) {
                error = trs("Read error while exporting recovered file");
                return false;
            }
            out.write(reinterpret_cast<const char*>(buffer.data()), static_cast<std::streamsize>(chunk));
            if (!out) {
                error = trs("Write error while exporting recovered file");
                return false;
            }
            cursor += chunk;
            remaining -= chunk;
            written += chunk;
        }
        if (written >= expected_size) break;
    }
    return true;
}

References trs(), and write_ranges_to_file().

Referenced by anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::export_file(), anonymous_namespace{ext4_recovery.cpp}::Ext4RecoveryImpl::export_journal(), and write_ranges_to_file().