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authorValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
committerValentin Popov <valentin@popov.link>2024-07-19 15:37:58 +0300
commita990de90fe41456a23e58bd087d2f107d321f3a1 (patch)
tree15afc392522a9e85dc3332235e311b7d39352ea9 /vendor/object/src/read/elf/section.rs
parent3d48cd3f81164bbfc1a755dc1d4a9a02f98c8ddd (diff)
downloadfparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.tar.xz
fparkan-a990de90fe41456a23e58bd087d2f107d321f3a1.zip
Deleted vendor folder
Diffstat (limited to 'vendor/object/src/read/elf/section.rs')
-rw-r--r--vendor/object/src/read/elf/section.rs1150
1 files changed, 0 insertions, 1150 deletions
diff --git a/vendor/object/src/read/elf/section.rs b/vendor/object/src/read/elf/section.rs
deleted file mode 100644
index 2b5ae01..0000000
--- a/vendor/object/src/read/elf/section.rs
+++ /dev/null
@@ -1,1150 +0,0 @@
-use core::fmt::Debug;
-use core::{iter, mem, slice, str};
-
-use crate::elf;
-use crate::endian::{self, Endianness, U32Bytes};
-use crate::pod::Pod;
-use crate::read::{
- self, Bytes, CompressedData, CompressedFileRange, CompressionFormat, Error, ObjectSection,
- ReadError, ReadRef, SectionFlags, SectionIndex, SectionKind, StringTable,
-};
-
-use super::{
- AttributesSection, CompressionHeader, ElfFile, ElfSectionRelocationIterator, FileHeader,
- GnuHashTable, HashTable, NoteIterator, RelocationSections, SymbolTable, VerdefIterator,
- VerneedIterator, VersionTable,
-};
-
-/// The table of section headers in an ELF file.
-///
-/// Also includes the string table used for the section names.
-///
-/// Returned by [`FileHeader::sections`].
-#[derive(Debug, Default, Clone, Copy)]
-pub struct SectionTable<'data, Elf: FileHeader, R = &'data [u8]>
-where
- R: ReadRef<'data>,
-{
- sections: &'data [Elf::SectionHeader],
- strings: StringTable<'data, R>,
-}
-
-impl<'data, Elf: FileHeader, R: ReadRef<'data>> SectionTable<'data, Elf, R> {
- /// Create a new section table.
- #[inline]
- pub fn new(sections: &'data [Elf::SectionHeader], strings: StringTable<'data, R>) -> Self {
- SectionTable { sections, strings }
- }
-
- /// Iterate over the section headers.
- #[inline]
- pub fn iter(&self) -> slice::Iter<'data, Elf::SectionHeader> {
- self.sections.iter()
- }
-
- /// Return true if the section table is empty.
- #[inline]
- pub fn is_empty(&self) -> bool {
- self.sections.is_empty()
- }
-
- /// The number of section headers.
- #[inline]
- pub fn len(&self) -> usize {
- self.sections.len()
- }
-
- /// Return the section header at the given index.
- pub fn section(&self, index: SectionIndex) -> read::Result<&'data Elf::SectionHeader> {
- self.sections
- .get(index.0)
- .read_error("Invalid ELF section index")
- }
-
- /// Return the section header with the given name.
- ///
- /// Ignores sections with invalid names.
- pub fn section_by_name(
- &self,
- endian: Elf::Endian,
- name: &[u8],
- ) -> Option<(usize, &'data Elf::SectionHeader)> {
- self.sections
- .iter()
- .enumerate()
- .find(|(_, section)| self.section_name(endian, section) == Ok(name))
- }
-
- /// Return the section name for the given section header.
- pub fn section_name(
- &self,
- endian: Elf::Endian,
- section: &'data Elf::SectionHeader,
- ) -> read::Result<&'data [u8]> {
- section.name(endian, self.strings)
- }
-
- /// Return the string table at the given section index.
- ///
- /// Returns an error if the section is not a string table.
- #[inline]
- pub fn strings(
- &self,
- endian: Elf::Endian,
- data: R,
- index: SectionIndex,
- ) -> read::Result<StringTable<'data, R>> {
- self.section(index)?
- .strings(endian, data)?
- .read_error("Invalid ELF string section type")
- }
-
- /// Return the symbol table of the given section type.
- ///
- /// Returns an empty symbol table if the symbol table does not exist.
- #[inline]
- pub fn symbols(
- &self,
- endian: Elf::Endian,
- data: R,
- sh_type: u32,
- ) -> read::Result<SymbolTable<'data, Elf, R>> {
- debug_assert!(sh_type == elf::SHT_DYNSYM || sh_type == elf::SHT_SYMTAB);
-
- let (index, section) = match self
- .iter()
- .enumerate()
- .find(|s| s.1.sh_type(endian) == sh_type)
- {
- Some(s) => s,
- None => return Ok(SymbolTable::default()),
- };
-
- SymbolTable::parse(endian, data, self, SectionIndex(index), section)
- }
-
- /// Return the symbol table at the given section index.
- ///
- /// Returns an error if the section is not a symbol table.
- #[inline]
- pub fn symbol_table_by_index(
- &self,
- endian: Elf::Endian,
- data: R,
- index: SectionIndex,
- ) -> read::Result<SymbolTable<'data, Elf, R>> {
- let section = self.section(index)?;
- match section.sh_type(endian) {
- elf::SHT_DYNSYM | elf::SHT_SYMTAB => {}
- _ => return Err(Error("Invalid ELF symbol table section type")),
- }
- SymbolTable::parse(endian, data, self, index, section)
- }
-
- /// Create a mapping from section index to associated relocation sections.
- #[inline]
- pub fn relocation_sections(
- &self,
- endian: Elf::Endian,
- symbol_section: SectionIndex,
- ) -> read::Result<RelocationSections> {
- RelocationSections::parse(endian, self, symbol_section)
- }
-
- /// Return the contents of a dynamic section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if there is no `SHT_DYNAMIC` section.
- /// Returns `Err` for invalid values.
- pub fn dynamic(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [Elf::Dyn], SectionIndex)>> {
- for section in self.sections {
- if let Some(dynamic) = section.dynamic(endian, data)? {
- return Ok(Some(dynamic));
- }
- }
- Ok(None)
- }
-
- /// Return the header of a SysV hash section.
- ///
- /// Returns `Ok(None)` if there is no SysV GNU hash section.
- /// Returns `Err` for invalid values.
- pub fn hash_header(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<&'data elf::HashHeader<Elf::Endian>>> {
- for section in self.sections {
- if let Some(hash) = section.hash_header(endian, data)? {
- return Ok(Some(hash));
- }
- }
- Ok(None)
- }
-
- /// Return the contents of a SysV hash section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if there is no SysV hash section.
- /// Returns `Err` for invalid values.
- pub fn hash(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(HashTable<'data, Elf>, SectionIndex)>> {
- for section in self.sections {
- if let Some(hash) = section.hash(endian, data)? {
- return Ok(Some(hash));
- }
- }
- Ok(None)
- }
-
- /// Return the header of a GNU hash section.
- ///
- /// Returns `Ok(None)` if there is no GNU hash section.
- /// Returns `Err` for invalid values.
- pub fn gnu_hash_header(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<&'data elf::GnuHashHeader<Elf::Endian>>> {
- for section in self.sections {
- if let Some(hash) = section.gnu_hash_header(endian, data)? {
- return Ok(Some(hash));
- }
- }
- Ok(None)
- }
-
- /// Return the contents of a GNU hash section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if there is no GNU hash section.
- /// Returns `Err` for invalid values.
- pub fn gnu_hash(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(GnuHashTable<'data, Elf>, SectionIndex)>> {
- for section in self.sections {
- if let Some(hash) = section.gnu_hash(endian, data)? {
- return Ok(Some(hash));
- }
- }
- Ok(None)
- }
-
- /// Return the contents of a `SHT_GNU_VERSYM` section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if there is no `SHT_GNU_VERSYM` section.
- /// Returns `Err` for invalid values.
- pub fn gnu_versym(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [elf::Versym<Elf::Endian>], SectionIndex)>> {
- for section in self.sections {
- if let Some(syms) = section.gnu_versym(endian, data)? {
- return Ok(Some(syms));
- }
- }
- Ok(None)
- }
-
- /// Return the contents of a `SHT_GNU_VERDEF` section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if there is no `SHT_GNU_VERDEF` section.
- /// Returns `Err` for invalid values.
- pub fn gnu_verdef(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(VerdefIterator<'data, Elf>, SectionIndex)>> {
- for section in self.sections {
- if let Some(defs) = section.gnu_verdef(endian, data)? {
- return Ok(Some(defs));
- }
- }
- Ok(None)
- }
-
- /// Return the contents of a `SHT_GNU_VERNEED` section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if there is no `SHT_GNU_VERNEED` section.
- /// Returns `Err` for invalid values.
- pub fn gnu_verneed(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<(VerneedIterator<'data, Elf>, SectionIndex)>> {
- for section in self.sections {
- if let Some(needs) = section.gnu_verneed(endian, data)? {
- return Ok(Some(needs));
- }
- }
- Ok(None)
- }
-
- /// Returns the symbol version table.
- ///
- /// Returns `Ok(None)` if there is no `SHT_GNU_VERSYM` section.
- /// Returns `Err` for invalid values.
- pub fn versions(
- &self,
- endian: Elf::Endian,
- data: R,
- ) -> read::Result<Option<VersionTable<'data, Elf>>> {
- let (versyms, link) = match self.gnu_versym(endian, data)? {
- Some(val) => val,
- None => return Ok(None),
- };
- let strings = self.symbol_table_by_index(endian, data, link)?.strings();
- // TODO: check links?
- let verdefs = self.gnu_verdef(endian, data)?.map(|x| x.0);
- let verneeds = self.gnu_verneed(endian, data)?.map(|x| x.0);
- VersionTable::parse(endian, versyms, verdefs, verneeds, strings).map(Some)
- }
-}
-
-/// An iterator for the sections in an [`ElfFile32`](super::ElfFile32).
-pub type ElfSectionIterator32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
- ElfSectionIterator<'data, 'file, elf::FileHeader32<Endian>, R>;
-/// An iterator for the sections in an [`ElfFile64`](super::ElfFile64).
-pub type ElfSectionIterator64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
- ElfSectionIterator<'data, 'file, elf::FileHeader64<Endian>, R>;
-
-/// An iterator for the sections in an [`ElfFile`].
-#[derive(Debug)]
-pub struct ElfSectionIterator<'data, 'file, Elf, R = &'data [u8]>
-where
- Elf: FileHeader,
- R: ReadRef<'data>,
-{
- pub(super) file: &'file ElfFile<'data, Elf, R>,
- pub(super) iter: iter::Enumerate<slice::Iter<'data, Elf::SectionHeader>>,
-}
-
-impl<'data, 'file, Elf, R> Iterator for ElfSectionIterator<'data, 'file, Elf, R>
-where
- Elf: FileHeader,
- R: ReadRef<'data>,
-{
- type Item = ElfSection<'data, 'file, Elf, R>;
-
- fn next(&mut self) -> Option<Self::Item> {
- self.iter.next().map(|(index, section)| ElfSection {
- index: SectionIndex(index),
- file: self.file,
- section,
- })
- }
-}
-
-/// A section in an [`ElfFile32`](super::ElfFile32).
-pub type ElfSection32<'data, 'file, Endian = Endianness, R = &'data [u8]> =
- ElfSection<'data, 'file, elf::FileHeader32<Endian>, R>;
-/// A section in an [`ElfFile64`](super::ElfFile64).
-pub type ElfSection64<'data, 'file, Endian = Endianness, R = &'data [u8]> =
- ElfSection<'data, 'file, elf::FileHeader64<Endian>, R>;
-
-/// A section in an [`ElfFile`].
-///
-/// Most functionality is provided by the [`ObjectSection`] trait implementation.
-#[derive(Debug)]
-pub struct ElfSection<'data, 'file, Elf, R = &'data [u8]>
-where
- Elf: FileHeader,
- R: ReadRef<'data>,
-{
- pub(super) file: &'file ElfFile<'data, Elf, R>,
- pub(super) index: SectionIndex,
- pub(super) section: &'data Elf::SectionHeader,
-}
-
-impl<'data, 'file, Elf: FileHeader, R: ReadRef<'data>> ElfSection<'data, 'file, Elf, R> {
- fn bytes(&self) -> read::Result<&'data [u8]> {
- self.section
- .data(self.file.endian, self.file.data)
- .read_error("Invalid ELF section size or offset")
- }
-
- fn maybe_compressed(&self) -> read::Result<Option<CompressedFileRange>> {
- let endian = self.file.endian;
- if let Some((header, offset, compressed_size)) =
- self.section.compression(endian, self.file.data)?
- {
- let format = match header.ch_type(endian) {
- elf::ELFCOMPRESS_ZLIB => CompressionFormat::Zlib,
- elf::ELFCOMPRESS_ZSTD => CompressionFormat::Zstandard,
- _ => return Err(Error("Unsupported ELF compression type")),
- };
- let uncompressed_size = header.ch_size(endian).into();
- Ok(Some(CompressedFileRange {
- format,
- offset,
- compressed_size,
- uncompressed_size,
- }))
- } else {
- Ok(None)
- }
- }
-
- /// Try GNU-style "ZLIB" header decompression.
- fn maybe_compressed_gnu(&self) -> read::Result<Option<CompressedFileRange>> {
- let name = match self.name() {
- Ok(name) => name,
- // I think it's ok to ignore this error?
- Err(_) => return Ok(None),
- };
- if !name.starts_with(".zdebug_") {
- return Ok(None);
- }
- let (section_offset, section_size) = self
- .section
- .file_range(self.file.endian)
- .read_error("Invalid ELF GNU compressed section type")?;
- let mut offset = section_offset;
- let data = self.file.data;
- // Assume ZLIB-style uncompressed data is no more than 4GB to avoid accidentally
- // huge allocations. This also reduces the chance of accidentally matching on a
- // .debug_str that happens to start with "ZLIB".
- if data
- .read_bytes(&mut offset, 8)
- .read_error("ELF GNU compressed section is too short")?
- != b"ZLIB\0\0\0\0"
- {
- return Err(Error("Invalid ELF GNU compressed section header"));
- }
- let uncompressed_size = data
- .read::<U32Bytes<_>>(&mut offset)
- .read_error("ELF GNU compressed section is too short")?
- .get(endian::BigEndian)
- .into();
- let compressed_size = section_size
- .checked_sub(offset - section_offset)
- .read_error("ELF GNU compressed section is too short")?;
- Ok(Some(CompressedFileRange {
- format: CompressionFormat::Zlib,
- offset,
- compressed_size,
- uncompressed_size,
- }))
- }
-}
-
-impl<'data, 'file, Elf, R> read::private::Sealed for ElfSection<'data, 'file, Elf, R>
-where
- Elf: FileHeader,
- R: ReadRef<'data>,
-{
-}
-
-impl<'data, 'file, Elf, R> ObjectSection<'data> for ElfSection<'data, 'file, Elf, R>
-where
- Elf: FileHeader,
- R: ReadRef<'data>,
-{
- type RelocationIterator = ElfSectionRelocationIterator<'data, 'file, Elf, R>;
-
- #[inline]
- fn index(&self) -> SectionIndex {
- self.index
- }
-
- #[inline]
- fn address(&self) -> u64 {
- self.section.sh_addr(self.file.endian).into()
- }
-
- #[inline]
- fn size(&self) -> u64 {
- self.section.sh_size(self.file.endian).into()
- }
-
- #[inline]
- fn align(&self) -> u64 {
- self.section.sh_addralign(self.file.endian).into()
- }
-
- #[inline]
- fn file_range(&self) -> Option<(u64, u64)> {
- self.section.file_range(self.file.endian)
- }
-
- #[inline]
- fn data(&self) -> read::Result<&'data [u8]> {
- self.bytes()
- }
-
- fn data_range(&self, address: u64, size: u64) -> read::Result<Option<&'data [u8]>> {
- Ok(read::util::data_range(
- self.bytes()?,
- self.address(),
- address,
- size,
- ))
- }
-
- fn compressed_file_range(&self) -> read::Result<CompressedFileRange> {
- Ok(if let Some(data) = self.maybe_compressed()? {
- data
- } else if let Some(data) = self.maybe_compressed_gnu()? {
- data
- } else {
- CompressedFileRange::none(self.file_range())
- })
- }
-
- fn compressed_data(&self) -> read::Result<CompressedData<'data>> {
- self.compressed_file_range()?.data(self.file.data)
- }
-
- fn name_bytes(&self) -> read::Result<&[u8]> {
- self.file
- .sections
- .section_name(self.file.endian, self.section)
- }
-
- fn name(&self) -> read::Result<&str> {
- let name = self.name_bytes()?;
- str::from_utf8(name)
- .ok()
- .read_error("Non UTF-8 ELF section name")
- }
-
- #[inline]
- fn segment_name_bytes(&self) -> read::Result<Option<&[u8]>> {
- Ok(None)
- }
-
- #[inline]
- fn segment_name(&self) -> read::Result<Option<&str>> {
- Ok(None)
- }
-
- fn kind(&self) -> SectionKind {
- let flags = self.section.sh_flags(self.file.endian).into();
- let sh_type = self.section.sh_type(self.file.endian);
- match sh_type {
- elf::SHT_PROGBITS => {
- if flags & u64::from(elf::SHF_ALLOC) != 0 {
- if flags & u64::from(elf::SHF_EXECINSTR) != 0 {
- SectionKind::Text
- } else if flags & u64::from(elf::SHF_TLS) != 0 {
- SectionKind::Tls
- } else if flags & u64::from(elf::SHF_WRITE) != 0 {
- SectionKind::Data
- } else if flags & u64::from(elf::SHF_STRINGS) != 0 {
- SectionKind::ReadOnlyString
- } else {
- SectionKind::ReadOnlyData
- }
- } else if flags & u64::from(elf::SHF_STRINGS) != 0 {
- SectionKind::OtherString
- } else {
- SectionKind::Other
- }
- }
- elf::SHT_NOBITS => {
- if flags & u64::from(elf::SHF_TLS) != 0 {
- SectionKind::UninitializedTls
- } else {
- SectionKind::UninitializedData
- }
- }
- elf::SHT_NOTE => SectionKind::Note,
- elf::SHT_NULL
- | elf::SHT_SYMTAB
- | elf::SHT_STRTAB
- | elf::SHT_RELA
- | elf::SHT_HASH
- | elf::SHT_DYNAMIC
- | elf::SHT_REL
- | elf::SHT_DYNSYM
- | elf::SHT_GROUP => SectionKind::Metadata,
- _ => SectionKind::Elf(sh_type),
- }
- }
-
- fn relocations(&self) -> ElfSectionRelocationIterator<'data, 'file, Elf, R> {
- ElfSectionRelocationIterator {
- section_index: self.index,
- file: self.file,
- relocations: None,
- }
- }
-
- fn flags(&self) -> SectionFlags {
- SectionFlags::Elf {
- sh_flags: self.section.sh_flags(self.file.endian).into(),
- }
- }
-}
-
-/// A trait for generic access to [`elf::SectionHeader32`] and [`elf::SectionHeader64`].
-#[allow(missing_docs)]
-pub trait SectionHeader: Debug + Pod {
- type Elf: FileHeader<SectionHeader = Self, Endian = Self::Endian, Word = Self::Word>;
- type Word: Into<u64>;
- type Endian: endian::Endian;
-
- fn sh_name(&self, endian: Self::Endian) -> u32;
- fn sh_type(&self, endian: Self::Endian) -> u32;
- fn sh_flags(&self, endian: Self::Endian) -> Self::Word;
- fn sh_addr(&self, endian: Self::Endian) -> Self::Word;
- fn sh_offset(&self, endian: Self::Endian) -> Self::Word;
- fn sh_size(&self, endian: Self::Endian) -> Self::Word;
- fn sh_link(&self, endian: Self::Endian) -> u32;
- fn sh_info(&self, endian: Self::Endian) -> u32;
- fn sh_addralign(&self, endian: Self::Endian) -> Self::Word;
- fn sh_entsize(&self, endian: Self::Endian) -> Self::Word;
-
- /// Parse the section name from the string table.
- fn name<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- strings: StringTable<'data, R>,
- ) -> read::Result<&'data [u8]> {
- strings
- .get(self.sh_name(endian))
- .read_error("Invalid ELF section name offset")
- }
-
- /// Return the offset and size of the section in the file.
- ///
- /// Returns `None` for sections that have no data in the file.
- fn file_range(&self, endian: Self::Endian) -> Option<(u64, u64)> {
- if self.sh_type(endian) == elf::SHT_NOBITS {
- None
- } else {
- Some((self.sh_offset(endian).into(), self.sh_size(endian).into()))
- }
- }
-
- /// Return the section data.
- ///
- /// Returns `Ok(&[])` if the section has no data.
- /// Returns `Err` for invalid values.
- fn data<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<&'data [u8]> {
- if let Some((offset, size)) = self.file_range(endian) {
- data.read_bytes_at(offset, size)
- .read_error("Invalid ELF section size or offset")
- } else {
- Ok(&[])
- }
- }
-
- /// Return the section data as a slice of the given type.
- ///
- /// Allows padding at the end of the data.
- /// Returns `Ok(&[])` if the section has no data.
- /// Returns `Err` for invalid values, including bad alignment.
- fn data_as_array<'data, T: Pod, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<&'data [T]> {
- let mut data = self.data(endian, data).map(Bytes)?;
- data.read_slice(data.len() / mem::size_of::<T>())
- .read_error("Invalid ELF section size or offset")
- }
-
- /// Return the strings in the section.
- ///
- /// Returns `Ok(None)` if the section does not contain strings.
- /// Returns `Err` for invalid values.
- fn strings<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<StringTable<'data, R>>> {
- if self.sh_type(endian) != elf::SHT_STRTAB {
- return Ok(None);
- }
- let str_offset = self.sh_offset(endian).into();
- let str_size = self.sh_size(endian).into();
- let str_end = str_offset
- .checked_add(str_size)
- .read_error("Invalid ELF string section offset or size")?;
- Ok(Some(StringTable::new(data, str_offset, str_end)))
- }
-
- /// Return the symbols in the section.
- ///
- /// Also finds the linked string table in `sections`.
- ///
- /// `section_index` must be the 0-based index of this section, and is used
- /// to find the corresponding extended section index table in `sections`.
- ///
- /// Returns `Ok(None)` if the section does not contain symbols.
- /// Returns `Err` for invalid values.
- fn symbols<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- sections: &SectionTable<'data, Self::Elf, R>,
- section_index: SectionIndex,
- ) -> read::Result<Option<SymbolTable<'data, Self::Elf, R>>> {
- let sh_type = self.sh_type(endian);
- if sh_type != elf::SHT_SYMTAB && sh_type != elf::SHT_DYNSYM {
- return Ok(None);
- }
- SymbolTable::parse(endian, data, sections, section_index, self).map(Some)
- }
-
- /// Return the `Elf::Rel` entries in the section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if the section does not contain relocations.
- /// Returns `Err` for invalid values.
- fn rel<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [<Self::Elf as FileHeader>::Rel], SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_REL {
- return Ok(None);
- }
- let rel = self
- .data_as_array(endian, data)
- .read_error("Invalid ELF relocation section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((rel, link)))
- }
-
- /// Return the `Elf::Rela` entries in the section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if the section does not contain relocations.
- /// Returns `Err` for invalid values.
- fn rela<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [<Self::Elf as FileHeader>::Rela], SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_RELA {
- return Ok(None);
- }
- let rela = self
- .data_as_array(endian, data)
- .read_error("Invalid ELF relocation section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((rela, link)))
- }
-
- /// Return entries in a dynamic section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if the section type is not `SHT_DYNAMIC`.
- /// Returns `Err` for invalid values.
- fn dynamic<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [<Self::Elf as FileHeader>::Dyn], SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_DYNAMIC {
- return Ok(None);
- }
- let dynamic = self
- .data_as_array(endian, data)
- .read_error("Invalid ELF dynamic section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((dynamic, link)))
- }
-
- /// Return a note iterator for the section data.
- ///
- /// Returns `Ok(None)` if the section does not contain notes.
- /// Returns `Err` for invalid values.
- fn notes<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<NoteIterator<'data, Self::Elf>>> {
- if self.sh_type(endian) != elf::SHT_NOTE {
- return Ok(None);
- }
- let data = self
- .data(endian, data)
- .read_error("Invalid ELF note section offset or size")?;
- let notes = NoteIterator::new(endian, self.sh_addralign(endian), data)?;
- Ok(Some(notes))
- }
-
- /// Return the contents of a group section.
- ///
- /// The first value is a `GRP_*` value, and the remaining values
- /// are section indices.
- ///
- /// Returns `Ok(None)` if the section does not define a group.
- /// Returns `Err` for invalid values.
- fn group<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(u32, &'data [U32Bytes<Self::Endian>])>> {
- if self.sh_type(endian) != elf::SHT_GROUP {
- return Ok(None);
- }
- let mut data = self
- .data(endian, data)
- .read_error("Invalid ELF group section offset or size")
- .map(Bytes)?;
- let flag = data
- .read::<U32Bytes<_>>()
- .read_error("Invalid ELF group section offset or size")?
- .get(endian);
- let count = data.len() / mem::size_of::<U32Bytes<Self::Endian>>();
- let sections = data
- .read_slice(count)
- .read_error("Invalid ELF group section offset or size")?;
- Ok(Some((flag, sections)))
- }
-
- /// Return the header of a SysV hash section.
- ///
- /// Returns `Ok(None)` if the section does not contain a SysV hash.
- /// Returns `Err` for invalid values.
- fn hash_header<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<&'data elf::HashHeader<Self::Endian>>> {
- if self.sh_type(endian) != elf::SHT_HASH {
- return Ok(None);
- }
- let data = self
- .data(endian, data)
- .read_error("Invalid ELF hash section offset or size")?;
- let header = data
- .read_at::<elf::HashHeader<Self::Endian>>(0)
- .read_error("Invalid hash header")?;
- Ok(Some(header))
- }
-
- /// Return the contents of a SysV hash section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if the section does not contain a SysV hash.
- /// Returns `Err` for invalid values.
- fn hash<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(HashTable<'data, Self::Elf>, SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_HASH {
- return Ok(None);
- }
- let data = self
- .data(endian, data)
- .read_error("Invalid ELF hash section offset or size")?;
- let hash = HashTable::parse(endian, data)?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((hash, link)))
- }
-
- /// Return the header of a GNU hash section.
- ///
- /// Returns `Ok(None)` if the section does not contain a GNU hash.
- /// Returns `Err` for invalid values.
- fn gnu_hash_header<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<&'data elf::GnuHashHeader<Self::Endian>>> {
- if self.sh_type(endian) != elf::SHT_GNU_HASH {
- return Ok(None);
- }
- let data = self
- .data(endian, data)
- .read_error("Invalid ELF GNU hash section offset or size")?;
- let header = data
- .read_at::<elf::GnuHashHeader<Self::Endian>>(0)
- .read_error("Invalid GNU hash header")?;
- Ok(Some(header))
- }
-
- /// Return the contents of a GNU hash section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if the section does not contain a GNU hash.
- /// Returns `Err` for invalid values.
- fn gnu_hash<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(GnuHashTable<'data, Self::Elf>, SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_GNU_HASH {
- return Ok(None);
- }
- let data = self
- .data(endian, data)
- .read_error("Invalid ELF GNU hash section offset or size")?;
- let hash = GnuHashTable::parse(endian, data)?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((hash, link)))
- }
-
- /// Return the contents of a `SHT_GNU_VERSYM` section.
- ///
- /// Also returns the linked symbol table index.
- ///
- /// Returns `Ok(None)` if the section type is not `SHT_GNU_VERSYM`.
- /// Returns `Err` for invalid values.
- fn gnu_versym<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(&'data [elf::Versym<Self::Endian>], SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_GNU_VERSYM {
- return Ok(None);
- }
- let versym = self
- .data_as_array(endian, data)
- .read_error("Invalid ELF GNU versym section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((versym, link)))
- }
-
- /// Return an iterator for the entries of a `SHT_GNU_VERDEF` section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if the section type is not `SHT_GNU_VERDEF`.
- /// Returns `Err` for invalid values.
- fn gnu_verdef<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(VerdefIterator<'data, Self::Elf>, SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_GNU_VERDEF {
- return Ok(None);
- }
- let verdef = self
- .data(endian, data)
- .read_error("Invalid ELF GNU verdef section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((VerdefIterator::new(endian, verdef), link)))
- }
-
- /// Return an iterator for the entries of a `SHT_GNU_VERNEED` section.
- ///
- /// Also returns the linked string table index.
- ///
- /// Returns `Ok(None)` if the section type is not `SHT_GNU_VERNEED`.
- /// Returns `Err` for invalid values.
- fn gnu_verneed<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<(VerneedIterator<'data, Self::Elf>, SectionIndex)>> {
- if self.sh_type(endian) != elf::SHT_GNU_VERNEED {
- return Ok(None);
- }
- let verneed = self
- .data(endian, data)
- .read_error("Invalid ELF GNU verneed section offset or size")?;
- let link = SectionIndex(self.sh_link(endian) as usize);
- Ok(Some((VerneedIterator::new(endian, verneed), link)))
- }
-
- /// Return the contents of a `SHT_GNU_ATTRIBUTES` section.
- ///
- /// Returns `Ok(None)` if the section type is not `SHT_GNU_ATTRIBUTES`.
- /// Returns `Err` for invalid values.
- fn gnu_attributes<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<Option<AttributesSection<'data, Self::Elf>>> {
- if self.sh_type(endian) != elf::SHT_GNU_ATTRIBUTES {
- return Ok(None);
- }
- self.attributes(endian, data).map(Some)
- }
-
- /// Parse the contents of the section as attributes.
- ///
- /// This function does not check whether section type corresponds
- /// to a section that contains attributes.
- ///
- /// Returns `Err` for invalid values.
- fn attributes<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<AttributesSection<'data, Self::Elf>> {
- let data = self.data(endian, data)?;
- AttributesSection::new(endian, data)
- }
-
- /// Parse the compression header if present.
- ///
- /// Returns the header, and the offset and size of the compressed section data
- /// in the file.
- ///
- /// Returns `Ok(None)` if the section flags do not have `SHF_COMPRESSED`.
- /// Returns `Err` for invalid values.
- fn compression<'data, R: ReadRef<'data>>(
- &self,
- endian: Self::Endian,
- data: R,
- ) -> read::Result<
- Option<(
- &'data <Self::Elf as FileHeader>::CompressionHeader,
- u64,
- u64,
- )>,
- > {
- if (self.sh_flags(endian).into() & u64::from(elf::SHF_COMPRESSED)) == 0 {
- return Ok(None);
- }
- let (section_offset, section_size) = self
- .file_range(endian)
- .read_error("Invalid ELF compressed section type")?;
- let mut offset = section_offset;
- let header = data
- .read::<<Self::Elf as FileHeader>::CompressionHeader>(&mut offset)
- .read_error("Invalid ELF compressed section offset")?;
- let compressed_size = section_size
- .checked_sub(offset - section_offset)
- .read_error("Invalid ELF compressed section size")?;
- Ok(Some((header, offset, compressed_size)))
- }
-}
-
-impl<Endian: endian::Endian> SectionHeader for elf::SectionHeader32<Endian> {
- type Elf = elf::FileHeader32<Endian>;
- type Word = u32;
- type Endian = Endian;
-
- #[inline]
- fn sh_name(&self, endian: Self::Endian) -> u32 {
- self.sh_name.get(endian)
- }
-
- #[inline]
- fn sh_type(&self, endian: Self::Endian) -> u32 {
- self.sh_type.get(endian)
- }
-
- #[inline]
- fn sh_flags(&self, endian: Self::Endian) -> Self::Word {
- self.sh_flags.get(endian)
- }
-
- #[inline]
- fn sh_addr(&self, endian: Self::Endian) -> Self::Word {
- self.sh_addr.get(endian)
- }
-
- #[inline]
- fn sh_offset(&self, endian: Self::Endian) -> Self::Word {
- self.sh_offset.get(endian)
- }
-
- #[inline]
- fn sh_size(&self, endian: Self::Endian) -> Self::Word {
- self.sh_size.get(endian)
- }
-
- #[inline]
- fn sh_link(&self, endian: Self::Endian) -> u32 {
- self.sh_link.get(endian)
- }
-
- #[inline]
- fn sh_info(&self, endian: Self::Endian) -> u32 {
- self.sh_info.get(endian)
- }
-
- #[inline]
- fn sh_addralign(&self, endian: Self::Endian) -> Self::Word {
- self.sh_addralign.get(endian)
- }
-
- #[inline]
- fn sh_entsize(&self, endian: Self::Endian) -> Self::Word {
- self.sh_entsize.get(endian)
- }
-}
-
-impl<Endian: endian::Endian> SectionHeader for elf::SectionHeader64<Endian> {
- type Word = u64;
- type Endian = Endian;
- type Elf = elf::FileHeader64<Endian>;
-
- #[inline]
- fn sh_name(&self, endian: Self::Endian) -> u32 {
- self.sh_name.get(endian)
- }
-
- #[inline]
- fn sh_type(&self, endian: Self::Endian) -> u32 {
- self.sh_type.get(endian)
- }
-
- #[inline]
- fn sh_flags(&self, endian: Self::Endian) -> Self::Word {
- self.sh_flags.get(endian)
- }
-
- #[inline]
- fn sh_addr(&self, endian: Self::Endian) -> Self::Word {
- self.sh_addr.get(endian)
- }
-
- #[inline]
- fn sh_offset(&self, endian: Self::Endian) -> Self::Word {
- self.sh_offset.get(endian)
- }
-
- #[inline]
- fn sh_size(&self, endian: Self::Endian) -> Self::Word {
- self.sh_size.get(endian)
- }
-
- #[inline]
- fn sh_link(&self, endian: Self::Endian) -> u32 {
- self.sh_link.get(endian)
- }
-
- #[inline]
- fn sh_info(&self, endian: Self::Endian) -> u32 {
- self.sh_info.get(endian)
- }
-
- #[inline]
- fn sh_addralign(&self, endian: Self::Endian) -> Self::Word {
- self.sh_addralign.get(endian)
- }
-
- #[inline]
- fn sh_entsize(&self, endian: Self::Endian) -> Self::Word {
- self.sh_entsize.get(endian)
- }
-}