Namespaces
	detail

Classes
class	basic_file_status
	Represents the result of a call to directory_iterator::status(). More...

class	directory_entry
	directory_entry - A single entry in a directory. More...

class	directory_iterator
	directory_iterator - Iterates through the entries in path. More...

class	file_status
	Represents the result of a call to sys::fs::status(). More...

class	mapped_file_region
	This class represents a memory mapped file. More...

class	recursive_directory_iterator
	recursive_directory_iterator - Same as directory_iterator except for it recurses down into child directories. More...

struct	space_info
	space_info - Self explanatory. More...

class	TempFile
	Represents a temporary file. More...

class	UniqueID

Typedefs
using	file_t = int

Enumerations
enum	file_type { file_type::status_error, file_type::file_not_found, file_type::regular_file, file_type::directory_file, file_type::symlink_file, file_type::block_file, file_type::character_file, file_type::fifo_file, file_type::socket_file, file_type::type_unknown }
	An enumeration for the file system's view of the type. More...

enum	perms { no_perms = 0, owner_read = 0400, owner_write = 0200, owner_exe = 0100, owner_all = owner_read \| owner_write \| owner_exe, group_read = 040, group_write = 020, group_exe = 010, group_all = group_read \| group_write \| group_exe, others_read = 04, others_write = 02, others_exe = 01, others_all = others_read \| others_write \| others_exe, all_read = owner_read \| group_read \| others_read, all_write = owner_write \| group_write \| others_write, all_exe = owner_exe \| group_exe \| others_exe, all_all = owner_all \| group_all \| others_all, set_uid_on_exe = 04000, set_gid_on_exe = 02000, sticky_bit = 01000, all_perms = all_all \| set_uid_on_exe \| set_gid_on_exe \| sticky_bit, perms_not_known = 0xFFFF }

Functions
perms	operator\| (perms l, perms r)

perms	operator & (perms l, perms r)

perms &	operator\|= (perms &l, perms r)

perms &	operator &= (perms &l, perms r)

perms	operator~ (perms x)

static std::error_code	createUniqueFile (const Twine &Model, int &ResultFd, SmallVectorImpl< char > &ResultPath, unsigned Mode, OpenFlags Flags)

static std::error_code	createTemporaryFile (const Twine &Model, int &ResultFD, llvm::SmallVectorImpl< char > &ResultPath, FSEntity Type)

static std::error_code	createTemporaryFile (const Twine &Prefix, StringRef Suffix, int &ResultFD, llvm::SmallVectorImpl< char > &ResultPath, FSEntity Type)

static std::error_code	copy_file_internal (int ReadFD, int WriteFD)

Physical Operators
void	make_absolute (const Twine &current_directory, SmallVectorImpl< char > &path)
	Make path an absolute path. More...

std::error_code	make_absolute (SmallVectorImpl< char > &path)
	Make path an absolute path. More...

std::error_code	create_directories (const Twine &path, bool IgnoreExisting=true, perms Perms=owner_all\|group_all)
	Create all the non-existent directories in path. More...

std::error_code	create_directory (const Twine &path, bool IgnoreExisting=true, perms Perms=owner_all\|group_all)
	Create the directory in path. More...

std::error_code	create_link (const Twine &to, const Twine &from)
	Create a link from from to to. More...

std::error_code	create_hard_link (const Twine &to, const Twine &from)
	Create a hard link from from to to, or return an error. More...

std::error_code	real_path (const Twine &path, SmallVectorImpl< char > &output, bool expand_tilde=false)
	Collapse all . More...

void	expand_tilde (const Twine &path, SmallVectorImpl< char > &output)
	Expands ~ expressions to the user's home directory. More...

std::error_code	current_path (SmallVectorImpl< char > &result)
	Get the current path. More...

std::error_code	set_current_path (const Twine &path)
	Set the current path. More...

std::error_code	remove (const Twine &path, bool IgnoreNonExisting=true)
	Remove path. More...

std::error_code	remove_directories (const Twine &path, bool IgnoreErrors=true)
	Recursively delete a directory. More...

std::error_code	rename (const Twine &from, const Twine &to)
	Rename from to to. More...

std::error_code	copy_file (const Twine &From, const Twine &To)
	Copy the contents of From to To. More...

std::error_code	copy_file (const Twine &From, int ToFD)
	Copy the contents of From to To. More...

std::error_code	resize_file (int FD, uint64_t Size)
	Resize path to size. More...

ErrorOr< MD5::MD5Result >	md5_contents (int FD)
	Compute an MD5 hash of a file's contents. More...

ErrorOr< MD5::MD5Result >	md5_contents (const Twine &Path)
	Version of compute_md5 that doesn't require an open file descriptor. More...

Variables
const file_t	kInvalidFile

Physical Observers
enum	AccessMode { AccessMode::Exist, AccessMode::Write, AccessMode::Execute }

enum	CreationDisposition : unsigned { CD_CreateAlways = 0, CD_CreateNew = 1, CD_OpenExisting = 2, CD_OpenAlways = 3 }

enum	FileAccess : unsigned { FA_Read = 1, FA_Write = 2 }

enum	OpenFlags : unsigned { OF_None = 0, F_None = 0, OF_Text = 1, F_Text = 1, OF_Append = 2, F_Append = 2, OF_Delete = 4, OF_ChildInherit = 8, OF_UpdateAtime = 16 }

bool	exists (const basic_file_status &status)
	Does file exist? More...

std::error_code	access (const Twine &Path, AccessMode Mode)
	Can the file be accessed? More...

bool	exists (const Twine &Path)
	Does file exist? More...

bool	can_execute (const Twine &Path)
	Can we execute this file? More...

bool	can_write (const Twine &Path)
	Can we write this file? More...

bool	equivalent (file_status A, file_status B)
	Do file_status's represent the same thing? More...

std::error_code	equivalent (const Twine &A, const Twine &B, bool &result)
	Do paths represent the same thing? More...

bool	equivalent (const Twine &A, const Twine &B)
	Simpler version of equivalent for clients that don't need to differentiate between an error and false. More...

std::error_code	is_local (const Twine &path, bool &result)
	Is the file mounted on a local filesystem? More...

std::error_code	is_local (int FD, bool &result)
	Version of is_local accepting an open file descriptor. More...

bool	is_local (const Twine &Path)
	Simpler version of is_local for clients that don't need to differentiate between an error and false. More...

bool	is_local (int FD)
	Simpler version of is_local accepting an open file descriptor for clients that don't need to differentiate between an error and false. More...

file_type	get_file_type (const Twine &Path, bool Follow=true)
	Does status represent a directory? More...

bool	is_directory (const basic_file_status &status)
	Does status represent a directory? More...

std::error_code	is_directory (const Twine &path, bool &result)
	Is path a directory? More...

bool	is_directory (const Twine &Path)
	Simpler version of is_directory for clients that don't need to differentiate between an error and false. More...

bool	is_regular_file (const basic_file_status &status)
	Does status represent a regular file? More...

std::error_code	is_regular_file (const Twine &path, bool &result)
	Is path a regular file? More...

bool	is_regular_file (const Twine &Path)
	Simpler version of is_regular_file for clients that don't need to differentiate between an error and false. More...

bool	is_symlink_file (const basic_file_status &status)
	Does status represent a symlink file? More...

std::error_code	is_symlink_file (const Twine &path, bool &result)
	Is path a symlink file? More...

bool	is_symlink_file (const Twine &Path)
	Simpler version of is_symlink_file for clients that don't need to differentiate between an error and false. More...

bool	is_other (const basic_file_status &status)
	Does this status represent something that exists but is not a directory or regular file? More...

std::error_code	is_other (const Twine &path, bool &result)
	Is path something that exists but is not a directory, regular file, or symlink? More...

std::error_code	status (const Twine &path, file_status &result, bool follow=true)
	Get file status as if by POSIX stat(). More...

std::error_code	status (int FD, file_status &Result)
	A version for when a file descriptor is already available. More...

std::error_code	setPermissions (const Twine &Path, perms Permissions)
	Set file permissions. More...

ErrorOr< perms >	getPermissions (const Twine &Path)
	Get file permissions. More...

std::error_code	file_size (const Twine &Path, uint64_t &Result)
	Get file size. More...

std::error_code	setLastAccessAndModificationTime (int FD, TimePoint<> AccessTime, TimePoint<> ModificationTime)
	Set the file modification and access time. More...

std::error_code	setLastAccessAndModificationTime (int FD, TimePoint<> Time)
	Simpler version that sets both file modification and access time to the same time. More...

bool	status_known (const basic_file_status &s)
	Is status available? More...

std::error_code	status_known (const Twine &path, bool &result)
	Is status available? More...

std::error_code	createUniqueFile (const Twine &Model, int &ResultFD, SmallVectorImpl< char > &ResultPath, unsigned Mode=all_read\|all_write)
	Create a uniquely named file. More...

std::error_code	createUniqueFile (const Twine &Model, SmallVectorImpl< char > &ResultPath, unsigned Mode=all_read\|all_write)
	Simpler version for clients that don't want an open file. More...

std::error_code	createTemporaryFile (const Twine &Prefix, StringRef Suffix, int &ResultFD, SmallVectorImpl< char > &ResultPath)
	Create a file in the system temporary directory. More...

std::error_code	createTemporaryFile (const Twine &Prefix, StringRef Suffix, SmallVectorImpl< char > &ResultPath)
	Simpler version for clients that don't want an open file. More...

std::error_code	createUniqueDirectory (const Twine &Prefix, SmallVectorImpl< char > &ResultPath)

std::error_code	getPotentiallyUniqueFileName (const Twine &Model, SmallVectorImpl< char > &ResultPath)
	Get a unique name, not currently exisiting in the filesystem. More...

std::error_code	getPotentiallyUniqueTempFileName (const Twine &Prefix, StringRef Suffix, SmallVectorImpl< char > &ResultPath)
	Get a unique temporary file name, not currently exisiting in the filesystem. More...

OpenFlags	operator\| (OpenFlags A, OpenFlags B)

OpenFlags &	operator\|= (OpenFlags &A, OpenFlags B)

FileAccess	operator\| (FileAccess A, FileAccess B)

FileAccess &	operator\|= (FileAccess &A, FileAccess B)

std::error_code	openFile (const Twine &Name, int &ResultFD, CreationDisposition Disp, FileAccess Access, OpenFlags Flags, unsigned Mode=0666)
	Opens a file with the specified creation disposition, access mode, and flags and returns a file descriptor. More...

Expected< file_t >	openNativeFile (const Twine &Name, CreationDisposition Disp, FileAccess Access, OpenFlags Flags, unsigned Mode=0666)
	Opens a file with the specified creation disposition, access mode, and flags and returns a platform-specific file object. More...

std::error_code	openFileForWrite (const Twine &Name, int &ResultFD, CreationDisposition Disp=CD_CreateAlways, OpenFlags Flags=OF_None, unsigned Mode=0666)
	Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor. More...

Expected< file_t >	openNativeFileForWrite (const Twine &Name, CreationDisposition Disp, OpenFlags Flags, unsigned Mode=0666)
	Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor. More...

std::error_code	openFileForReadWrite (const Twine &Name, int &ResultFD, CreationDisposition Disp, OpenFlags Flags, unsigned Mode=0666)
	Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor. More...

Expected< file_t >	openNativeFileForReadWrite (const Twine &Name, CreationDisposition Disp, OpenFlags Flags, unsigned Mode=0666)
	Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor. More...

std::error_code	openFileForRead (const Twine &Name, int &ResultFD, OpenFlags Flags=OF_None, SmallVectorImpl< char > *RealPath=nullptr)
	Opens the file with the given name in a read-only mode, returning its open file descriptor. More...

Expected< file_t >	openNativeFileForRead (const Twine &Name, OpenFlags Flags=OF_None, SmallVectorImpl< char > *RealPath=nullptr)
	Opens the file with the given name in a read-only mode, returning its open file descriptor. More...

void	closeFile (file_t &F)
	Close the file object. More...

std::error_code	getUniqueID (const Twine Path, UniqueID &Result)

ErrorOr< space_info >	disk_space (const Twine &Path)
	Get disk space usage information. More...

std::string	getMainExecutable (const char argv0, void MainExecAddr)
	Return the path to the main executable, given the value of argv[0] from program startup and the address of main itself. More...

Typedef Documentation

◆ file_t

using llvm::sys::fs::file_t = typedef int

Definition at line 61 of file FileSystem.h.

Enumeration Type Documentation

◆ AccessMode

enum llvm::sys::fs::AccessMode

strong

Enumerator
Exist
Write
Execute

Definition at line 456 of file FileSystem.h.

◆ CreationDisposition

enum llvm::sys::fs::CreationDisposition : unsigned

Enumerator
CD_CreateAlways	CD_CreateAlways - When opening a file: If it already exists, truncate it. If it does not already exist, create a new file.
CD_CreateNew	CD_CreateNew - When opening a file: If it already exists, fail. If it does not already exist, create a new file.
CD_OpenExisting	CD_OpenExisting - When opening a file: If it already exists, open the file with the offset set to 0. If it does not already exist, fail.
CD_OpenAlways	CD_OpenAlways - When opening a file: If it already exists, open the file with the offset set to 0. If it does not already exist, create a new file.

Definition at line 717 of file FileSystem.h.

◆ file_type

enum llvm::sys::fs::file_type

strong

An enumeration for the file system's view of the type.

Enumerator
status_error
file_not_found
regular_file
directory_file
symlink_file
block_file
character_file
fifo_file
socket_file
type_unknown

Definition at line 67 of file FileSystem.h.

◆ FileAccess

enum llvm::sys::fs::FileAccess : unsigned

Enumerator
FA_Read
FA_Write

Definition at line 739 of file FileSystem.h.

◆ OpenFlags

enum llvm::sys::fs::OpenFlags : unsigned

Enumerator
OF_None
F_None
OF_Text	The file should be opened in text mode on platforms that make this distinction.
F_Text
OF_Append	The file should be opened in append mode.
F_Append
OF_Delete	Delete the file on close. Only makes a difference on windows.
OF_ChildInherit	When a child process is launched, this file should remain open in the child process.
OF_UpdateAtime	Force files Atime to be updated on access. Only makes a difference on windows.

Definition at line 744 of file FileSystem.h.

◆ perms

enum llvm::sys::fs::perms

Enumerator
no_perms
owner_read
owner_write
owner_exe
owner_all
group_read
group_write
group_exe
group_all
others_read
others_write
others_exe
others_all
all_read
all_write
all_exe
all_all
set_uid_on_exe
set_gid_on_exe
sticky_bit
all_perms
perms_not_known

Definition at line 87 of file FileSystem.h.

Function Documentation

◆ access()

std::error_code llvm::sys::fs::access	(	const Twine &	Path,
		AccessMode	Mode
	)

Can the file be accessed?

Parameters

Path	Input path.

Returns: errc::success if the path can be accessed, otherwise a platform-specific error_code.

Referenced by can_write(), createUniqueEntity(), llvm::pdb::DIARawSymbol::dump(), exists(), GetSymbolRef(), and llvm::LockFileManager::waitForUnlock().

◆ can_execute()

bool llvm::sys::fs::can_execute ( const Twine & Path )

Can we execute this file?

Parameters

Path	Input path.

Returns: True if we can execute it, false otherwise.

Referenced by exists().

◆ can_write()

bool llvm::sys::fs::can_write ( const Twine & Path )

inline

Can we write this file?

Parameters

Path	Input path.

Returns: True if we can write to it, false otherwise.

Definition at line 483 of file FileSystem.h.

References access(), B, equivalent(), and Write.

◆ closeFile()

void llvm::sys::fs::closeFile ( file_t & F )

Close the file object.

This should be used instead of ::close for portability.

Parameters

F	On input, this is the file to close. On output, the file is set to kInvalidFile.

Referenced by openNativeFileForReadWrite().

◆ copy_file() [1/2]

std::error_code llvm::sys::fs::copy_file	(	const Twine &	From,
		const Twine &	To
	)

Copy the contents of From to To.

Parameters

From	The path to copy from.
To	The path to copy to. This is created.

Definition at line 962 of file Path.cpp.

References CD_CreateAlways, copy_file_internal(), OF_None, openFileForRead(), and openFileForWrite().

Referenced by createOnDiskBuffer(), llvm::sys::fs::file_status::file_status(), and llvm::sys::fs::TempFile::keep().

◆ copy_file() [2/2]

std::error_code llvm::sys::fs::copy_file	(	const Twine &	From,
		int	ToFD
	)

Copy the contents of From to To.

Parameters

From	The path to copy from.
ToFD	The open file descriptor of the destination file.

Definition at line 980 of file Path.cpp.

References copy_file_internal(), OF_None, and openFileForRead().

◆ copy_file_internal()

static std::error_code llvm::sys::fs::copy_file_internal	(	int	ReadFD,
		int	WriteFD
	)

static

Definition at line 938 of file Path.cpp.

References llvm::support::endian::read(), and llvm::support::endian::write().

Referenced by copy_file().

◆ create_directories()

std::error_code llvm::sys::fs::create_directories	(	const Twine &	path,
		bool	IgnoreExisting = `true`,
		perms	Perms = `owner_all \| group_all`
	)

Create all the non-existent directories in path.

Parameters

path	Directories to create.

Returns: errc::success if is_directory(path), otherwise a platform specific error_code. If IgnoreExisting is false, also returns error if the directory already existed.

Definition at line 914 of file Path.cpp.

References create_directory(), llvm::StringRef::empty(), llvm::no_such_file_or_directory, P, llvm::sys::path::parent_path(), and llvm::Twine::toStringRef().

Referenced by llvm::sys::fs::file_status::file_status(), llvm::lto::getThinLTOOutputFile(), llvm::lto::localCache(), and llvm::ThinLTOCodeGenerator::run().

◆ create_directory()

std::error_code llvm::sys::fs::create_directory	(	const Twine &	path,
		bool	IgnoreExisting = `true`,
		perms	Perms = `owner_all\|group_all`
	)

Create the directory in path.

Parameters

path	Directory to create.

Returns: errc::success if is_directory(path), otherwise a platform specific error_code. If IgnoreExisting is false, also returns error if the directory already existed.

Referenced by create_directories(), createUniqueEntity(), and llvm::sys::fs::file_status::file_status().

◆ create_hard_link()

std::error_code llvm::sys::fs::create_hard_link	(	const Twine &	to,
		const Twine &	from
	)

Create a hard link from from to to, or return an error.

Parameters

to	The path to hard link to.
from	The path to hard link from. This is created.

Returns: errc::success if the link was created, otherwise a platform specific error_code.

Referenced by llvm::sys::fs::file_status::file_status().

◆ create_link()

std::error_code llvm::sys::fs::create_link	(	const Twine &	to,
		const Twine &	from
	)

Create a link from from to to.

The link may be a soft or a hard link, depending on the platform. The caller may not assume which one. Currently on windows it creates a hard link since soft links require extra privileges. On unix, it creates a soft link since hard links don't work on SMB file systems.

Parameters

to	The path to hard link to.
from	The path to hard link from. This is created.

Returns: errc::success if the link was created, otherwise a platform specific error_code.

Referenced by llvm::sys::fs::file_status::file_status(), and llvm::LockFileManager::LockFileManager().

◆ createTemporaryFile() [1/4]

static std::error_code llvm::sys::fs::createTemporaryFile	(	const Twine &	Model,
		int &	ResultFD,
		llvm::SmallVectorImpl< char > &	ResultPath,
		FSEntity	Type
	)

static

Definition at line 792 of file Path.cpp.

References assert(), llvm::StringRef::begin(), createUniqueEntity(), llvm::StringRef::find_first_of(), llvm::support::native, llvm::StringRef::npos, owner_read, owner_write, P, and llvm::Twine::toNullTerminatedStringRef().

◆ createTemporaryFile() [2/4]

static std::error_code llvm::sys::fs::createTemporaryFile	(	const Twine &	Prefix,
		StringRef	Suffix,
		int &	ResultFD,
		llvm::SmallVectorImpl< char > &	ResultPath,
		FSEntity	Type
	)

static

Definition at line 804 of file Path.cpp.

References llvm::StringRef::empty().

Referenced by createTemporaryFile(), and getPotentiallyUniqueTempFileName().

◆ createTemporaryFile() [3/4]

std::error_code llvm::sys::fs::createTemporaryFile	(	const Twine &	Prefix,
		StringRef	Suffix,
		int &	ResultFD,
		SmallVectorImpl< char > &	ResultPath
	)

Create a file in the system temporary directory.

The filename is of the form prefix-random_chars.suffix. Since the directory is not know to the caller, Prefix and Suffix cannot have path separators. The files are created with mode 0600.

This should be used for things like a temporary .s that is removed after running the assembler.

Definition at line 811 of file Path.cpp.

References createTemporaryFile(), and FS_File.

Referenced by llvm::createGraphFilename(), printSymbolizedStackTrace(), and llvm::LTOCodeGenerator::writeMergedModules().

◆ createTemporaryFile() [4/4]

std::error_code llvm::sys::fs::createTemporaryFile	(	const Twine &	Prefix,
		StringRef	Suffix,
		SmallVectorImpl< char > &	ResultPath
	)

Simpler version for clients that don't want an open file.

An empty file will still be created.

Definition at line 817 of file Path.cpp.

References createTemporaryFile().

◆ createUniqueDirectory()

std::error_code llvm::sys::fs::createUniqueDirectory	(	const Twine &	Prefix,
		SmallVectorImpl< char > &	ResultPath
	)

Definition at line 831 of file Path.cpp.

References createUniqueEntity(), llvm::NVPTXISD::Dummy, and FS_Dir.

◆ createUniqueFile() [1/3]

static std::error_code llvm::sys::fs::createUniqueFile	(	const Twine &	Model,
		int &	ResultFd,
		SmallVectorImpl< char > &	ResultPath,
		unsigned	Mode,
		OpenFlags	Flags
	)

static

Definition at line 772 of file Path.cpp.

References createUniqueEntity(), and FS_File.

Referenced by llvm::sys::fs::TempFile::create(), and createUniqueFile().

◆ createUniqueFile() [2/3]

std::error_code llvm::sys::fs::createUniqueFile	(	const Twine &	Model,
		int &	ResultFD,
		SmallVectorImpl< char > &	ResultPath,
		unsigned	Mode = `all_read \| all_write`
	)

Create a uniquely named file.

Generates a unique path suitable for a temporary file and then opens it as a file. The name is based on model with '' replaced by a random char in [0-9a-f]. If model is not an absolute path, the temporary file will be created in the current directory.

Example: clang-%%-%%-%%-%%-%%.s => clang-a0-b1-c2-d3-e4.s

This is an atomic operation. Either the file is created and opened, or the file system is left untouched.

The intended use is for files that are to be kept, possibly after renaming them. For example, when running 'clang -c foo.o', the file can be first created as foo-abc123.o and then renamed.

Parameters

Model	Name to base unique path off of.
ResultFD	Set to the opened file's file descriptor.
ResultPath	Set to the opened file's absolute path.

Returns: errc::success if Result{FD,Path} have been successfully set, otherwise a platform-specific error_code.

Definition at line 766 of file Path.cpp.

References createUniqueEntity(), and FS_File.

Referenced by llvm::LockFileManager::LockFileManager().

◆ createUniqueFile() [3/3]

std::error_code llvm::sys::fs::createUniqueFile	(	const Twine &	Model,
		SmallVectorImpl< char > &	ResultPath,
		unsigned	Mode = `all_read \| all_write`
	)

Simpler version for clients that don't want an open file.

An empty file will still be created.

Definition at line 779 of file Path.cpp.

References createUniqueFile().

◆ current_path()

std::error_code llvm::sys::fs::current_path ( SmallVectorImpl< char > & result )

Get the current path.

Parameters

result Holds the current path on return.

Returns: errc::success if the current path has been stored in result, otherwise a platform-specific error_code.

Referenced by ExpandResponseFile(), llvm::sys::fs::file_status::file_status(), make_absolute(), and pathHasTraversal().

◆ disk_space()

ErrorOr<space_info> llvm::sys::fs::disk_space ( const Twine & Path )

Get disk space usage information.

Note: Users must be careful about "Time Of Check, Time Of Use" kind of bug. Note: Windows reports results according to the quota allocated to the user.

Parameters

Path	Input path.

Returns: a space_info structure filled with the capacity, free, and available space on the device Path is on. A platform specific error_code is returned on error.

Referenced by openNativeFileForReadWrite(), and llvm::pruneCache().

◆ equivalent() [1/3]

bool llvm::sys::fs::equivalent	(	file_status	A,
		file_status	B
	)

Do file_status's represent the same thing?

Parameters

A	Input file_status.
B	Input file_status.

assert(status_known(A) || status_known(B));

Returns: True if A and B both represent the same file system entity, false otherwise.

Referenced by can_write(), equivalent(), and llvm::sys::Process::FindInEnvPath().

◆ equivalent() [2/3]

std::error_code llvm::sys::fs::equivalent	(	const Twine &	A,
		const Twine &	B,
		bool &	result
	)

Do paths represent the same thing?

assert(status_known(A) || status_known(B));

Parameters

A	Input path A.
B	Input path B.
result	Set to true if stat(A) and stat(B) have the same device and inode (or equivalent).

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

◆ equivalent() [3/3]

bool llvm::sys::fs::equivalent	(	const Twine &	A,
		const Twine &	B
	)

inline

Simpler version of equivalent for clients that don't need to differentiate between an error and false.

Definition at line 512 of file FileSystem.h.

References equivalent(), and is_local().

◆ exists() [1/2]

bool llvm::sys::fs::exists ( const basic_file_status & status )

Does file exist?

Parameters

status A basic_file_status previously returned from stat.

Returns: True if the file represented by status exists, false if it does not.

Definition at line 1022 of file Path.cpp.

References status_known(), and llvm::sys::fs::basic_file_status::type().

Referenced by llvm::sys::fs::file_status::file_status(), llvm::sys::Process::FindInEnvPath(), findInputFile(), getFilename(), is_other(), llvm::LockFileManager::LockFileManager(), llvm::LockFileManager::waitForUnlock(), and writeGeneratedObject().

◆ exists() [2/2]

bool llvm::sys::fs::exists ( const Twine & Path )

inline

Does file exist?

Parameters

Path	Input path.

Returns: True if it exists, false otherwise.

Definition at line 469 of file FileSystem.h.

References access(), can_execute(), and Exist.

◆ expand_tilde()

void llvm::sys::fs::expand_tilde	(	const Twine &	path,
		SmallVectorImpl< char > &	output
	)

Expands ~ expressions to the user's home directory.

On Unix ~user directories are resolved as well.

Parameters

path	The path to resolve.

Referenced by llvm::sys::fs::file_status::file_status().

◆ file_size()

std::error_code llvm::sys::fs::file_size	(	const Twine &	Path,
		uint64_t &	Result
	)

inline

Get file size.

Parameters

Path	Input path.
Result	Set to the size of the file in Path.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Definition at line 679 of file FileSystem.h.

References llvm::sys::fs::basic_file_status::getSize(), setLastAccessAndModificationTime(), and status().

Referenced by llvm::xray::loadInstrumentationMap(), llvm::xray::loadProfile(), and llvm::xray::loadTraceFile().

◆ get_file_type()

file_type llvm::sys::fs::get_file_type	(	const Twine &	Path,
		bool	Follow = `true`
	)

Does status represent a directory?

Parameters

Path	The path to get the type of.
Follow	For symbolic links, indicates whether to return the file type of the link itself, or of the target.

Returns: A value from the file_type enumeration indicating the type of file.

Definition at line 1030 of file Path.cpp.

References status(), and llvm::sys::fs::basic_file_status::type().

Referenced by is_local().

◆ getMainExecutable()

std::string llvm::sys::fs::getMainExecutable	(	const char *	argv0,
		void *	MainExecAddr
	)

Return the path to the main executable, given the value of argv[0] from program startup and the address of main itself.

In extremis, this function may fail and return an empty path.

Referenced by printSymbolizedStackTrace().

◆ getPermissions()

ErrorOr< perms > llvm::sys::fs::getPermissions ( const Twine & Path )

Get file permissions.

Parameters

Path	File to get permissions from.

Returns: the permissions if they were successfully retrieved, otherwise a platform-specific error_code.

Note: On Windows, if the file does not have the FILE_ATTRIBUTE_READONLY attribute, all_all will be returned. Otherwise, all_read | all_exe will be returned.

Definition at line 1096 of file Path.cpp.

References Name, llvm::sys::fs::basic_file_status::permissions(), and status().

Referenced by is_symlink_file().

◆ getPotentiallyUniqueFileName()

std::error_code llvm::sys::fs::getPotentiallyUniqueFileName	(	const Twine &	Model,
		SmallVectorImpl< char > &	ResultPath
	)

Get a unique name, not currently exisiting in the filesystem.

Subject to race conditions, prefer to use createUniqueFile instead.

Similar to createUniqueFile, but instead of creating a file only checks if it exists. This function is subject to race conditions, if you want to use the returned name to actually create a file, use createUniqueFile instead.

Definition at line 839 of file Path.cpp.

References createUniqueEntity(), llvm::NVPTXISD::Dummy, and FS_Name.

◆ getPotentiallyUniqueTempFileName()

std::error_code llvm::sys::fs::getPotentiallyUniqueTempFileName	(	const Twine &	Prefix,
		StringRef	Suffix,
		SmallVectorImpl< char > &	ResultPath
	)

Get a unique temporary file name, not currently exisiting in the filesystem.

Subject to race conditions, prefer to use createTemporaryFile instead.

Similar to createTemporaryFile, but instead of creating a file only checks if it exists. This function is subject to race conditions, if you want to use the returned name to actually create a file, use createTemporaryFile instead.

Definition at line 846 of file Path.cpp.

References createTemporaryFile(), llvm::NVPTXISD::Dummy, and FS_Name.

◆ getUniqueID()

std::error_code llvm::sys::fs::getUniqueID	(	const Twine	Path,
		UniqueID &	Result
	)

Definition at line 757 of file Path.cpp.

References llvm::sys::fs::file_status::getUniqueID(), and status().

Referenced by llvm::sys::fs::file_status::file_status(), and openNativeFileForReadWrite().

◆ is_directory() [1/3]

bool llvm::sys::fs::is_directory ( const basic_file_status & status )

Does status represent a directory?

Parameters

status A basic_file_status previously returned from status.

Returns: status.type() == file_type::directory_file.

Definition at line 1037 of file Path.cpp.

References llvm::sys::fs::basic_file_status::type().

Referenced by is_directory(), is_local(), is_other(), llvm::pruneCache(), and llvm::ThinLTOCodeGenerator::run().

◆ is_directory() [2/3]

std::error_code llvm::sys::fs::is_directory	(	const Twine &	path,
		bool &	result
	)

Is path a directory?

Parameters

path	Input path.
result	Set to true if path is a directory (after following symlinks, false if it is not. Undefined otherwise.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Definition at line 1041 of file Path.cpp.

References is_directory(), and status().

◆ is_directory() [3/3]

bool llvm::sys::fs::is_directory ( const Twine & Path )

inline

Simpler version of is_directory for clients that don't need to differentiate between an error and false.

Definition at line 568 of file FileSystem.h.

References is_directory(), and is_regular_file().

◆ is_local() [1/4]

std::error_code llvm::sys::fs::is_local	(	const Twine &	path,
		bool &	result
	)

Is the file mounted on a local filesystem?

Parameters

path	Input path.
result	Set to true if path is on fixed media such as a hard disk, false if it is not.

Returns: errc::success if result has been successfully set, otherwise a platform specific error_code.

Referenced by equivalent(), is_local(), and pathHasTraversal().

◆ is_local() [2/4]

std::error_code llvm::sys::fs::is_local	(	int	FD,
		bool &	result
	)

Version of is_local accepting an open file descriptor.

◆ is_local() [3/4]

bool llvm::sys::fs::is_local ( const Twine & Path )

inline

Simpler version of is_local for clients that don't need to differentiate between an error and false.

Definition at line 531 of file FileSystem.h.

References is_local().

◆ is_local() [4/4]

bool llvm::sys::fs::is_local ( int FD )

inline

Simpler version of is_local accepting an open file descriptor for clients that don't need to differentiate between an error and false.

Definition at line 538 of file FileSystem.h.

References get_file_type(), is_directory(), and is_local().

◆ is_other() [1/2]

bool llvm::sys::fs::is_other ( const basic_file_status & status )

Does this status represent something that exists but is not a directory or regular file?

Parameters

status A basic_file_status previously returned from status.

Returns: exists(s) && !is_regular_file(s) && !is_directory(s)

Definition at line 1073 of file Path.cpp.

References exists(), is_directory(), and is_regular_file().

Referenced by is_other(), and is_symlink_file().

◆ is_other() [2/2]

std::error_code llvm::sys::fs::is_other	(	const Twine &	path,
		bool &	result
	)

Is path something that exists but is not a directory, regular file, or symlink?

Parameters

path	Input path.
result	Set to true if path exists, but is not a directory, regular file, or a symlink, false if it does not. Undefined otherwise.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Definition at line 1079 of file Path.cpp.

References is_other(), and status().

◆ is_regular_file() [1/3]

bool llvm::sys::fs::is_regular_file ( const basic_file_status & status )

Does status represent a regular file?

Parameters

status A basic_file_status previously returned from status.

Returns: status_known(status) && status.type() == file_type::regular_file.

Definition at line 1049 of file Path.cpp.

References llvm::sys::fs::basic_file_status::type().

Referenced by findSrcDirMap(), is_directory(), is_other(), and is_regular_file().

◆ is_regular_file() [2/3]

std::error_code llvm::sys::fs::is_regular_file	(	const Twine &	path,
		bool &	result
	)

Is path a regular file?

Parameters

path	Input path.
result	Set to true if path is a regular file (after following symlinks), false if it is not. Undefined otherwise.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Definition at line 1053 of file Path.cpp.

References is_regular_file(), and status().

◆ is_regular_file() [3/3]

bool llvm::sys::fs::is_regular_file ( const Twine & Path )

inline

Simpler version of is_regular_file for clients that don't need to differentiate between an error and false.

Definition at line 590 of file FileSystem.h.

References is_regular_file(), and is_symlink_file().

◆ is_symlink_file() [1/3]

bool llvm::sys::fs::is_symlink_file ( const basic_file_status & status )

Does status represent a symlink file?

Parameters

status A basic_file_status previously returned from status.

Returns: status_known(status) && status.type() == file_type::symlink_file.

Definition at line 1061 of file Path.cpp.

References llvm::sys::fs::basic_file_status::type().

Referenced by is_regular_file(), and is_symlink_file().

◆ is_symlink_file() [2/3]

std::error_code llvm::sys::fs::is_symlink_file	(	const Twine &	path,
		bool &	result
	)

Is path a symlink file?

Parameters

path	Input path.
result	Set to true if path is a symlink file, false if it is not. Undefined otherwise.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Definition at line 1065 of file Path.cpp.

References is_symlink_file(), and status().

◆ is_symlink_file() [3/3]

bool llvm::sys::fs::is_symlink_file ( const Twine & Path )

inline

Simpler version of is_symlink_file for clients that don't need to differentiate between an error and false.

Definition at line 614 of file FileSystem.h.

References getPermissions(), is_other(), is_symlink_file(), setPermissions(), and status().

◆ make_absolute() [1/2]

void llvm::sys::fs::make_absolute	(	const Twine &	current_directory,
		SmallVectorImpl< char > &	path
	)

Make path an absolute path.

Makes path absolute using the current_directory if it is not already. An empty path will result in the current_directory.

/absolute/path => /absolute/path relative/../path => <current-directory>/relative/../path

Parameters

path	A path that is modified to be an absolute path.

Definition at line 852 of file Path.cpp.

References llvm::sys::path::append(), llvm::StringRef::begin(), llvm::SmallVectorTemplateCommon< T, typename >::data(), llvm::StringRef::end(), llvm::sys::path::has_root_directory(), llvm::sys::path::has_root_name(), llvm_unreachable, llvm::support::native, llvm::sys::path::relative_path(), llvm::sys::path::root_directory(), llvm::sys::path::root_name(), llvm::SmallVectorBase::size(), llvm::SmallVectorImpl< T >::swap(), and llvm::Twine::toVector().

Referenced by llvm::vfs::RedirectingFileSystem::create(), llvm::sys::fs::file_status::file_status(), findSrcDirMap(), llvm::LockFileManager::LockFileManager(), make_absolute(), and llvm::vfs::FileSystem::makeAbsolute().

◆ make_absolute() [2/2]

std::error_code llvm::sys::fs::make_absolute ( SmallVectorImpl< char > & path )

Make path an absolute path.

Makes path absolute using the current directory if it is not already. An empty path will result in the current directory.

/absolute/path => /absolute/path relative/../path => <current-directory>/relative/../path

Parameters

path	A path that is modified to be an absolute path.

Returns: errc::success if path has been made absolute, otherwise a platform-specific error_code.

Definition at line 902 of file Path.cpp.

References current_path(), llvm::sys::path::is_absolute(), and make_absolute().

◆ md5_contents() [1/2]

ErrorOr< MD5::MD5Result > llvm::sys::fs::md5_contents ( int FD )

Compute an MD5 hash of a file's contents.

Parameters

FD	Input file descriptor.

Returns: An MD5Result with the hash computed, if successful, otherwise a std::error_code.

Definition at line 992 of file Path.cpp.

References llvm::MD5::final(), llvm::makeArrayRef(), llvm::support::endian::read(), and llvm::MD5::update().

Referenced by llvm::sys::fs::file_status::file_status(), and md5_contents().

◆ md5_contents() [2/2]

ErrorOr< MD5::MD5Result > llvm::sys::fs::md5_contents ( const Twine & Path )

Version of compute_md5 that doesn't require an open file descriptor.

Definition at line 1012 of file Path.cpp.

References md5_contents(), OF_None, and openFileForRead().

◆ openFile()

std::error_code llvm::sys::fs::openFile	(	const Twine &	Name,
		int &	ResultFD,
		CreationDisposition	Disp,
		FileAccess	Access,
		OpenFlags	Flags,
		unsigned	Mode = `0666`
	)

Opens a file with the specified creation disposition, access mode, and flags and returns a file descriptor.

The caller is responsible for closing the file descriptor once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
ResultFD	If the file could be opened successfully, its descriptor is stored in this location. Otherwise, this is set to -1.
Disp	Value specifying the existing-file behavior.
Access	Value specifying whether to open the file in read, write, or read-write mode.
Flags	Additional flags.
Mode	The access permissions of the file, represented in octal.

Returns: errc::success if Name has been opened, otherwise a platform-specific error_code.

Referenced by openFileForReadWrite(), openFileForWrite(), and operator|=().

◆ openFileForRead()

std::error_code llvm::sys::fs::openFileForRead	(	const Twine &	Name,
		int &	ResultFD,
		OpenFlags	Flags = `OF_None`,
		SmallVectorImpl< char > *	RealPath = `nullptr`
	)

Opens the file with the given name in a read-only mode, returning its open file descriptor.

The caller is responsible for closing the file descriptor once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
ResultFD	If the file could be opened successfully, its descriptor is stored in this location. Otherwise, this is set to -1.
RealPath	If nonnull, extra work is done to determine the real path of the opened file, and that path is stored in this location.

Returns: errc::success if Name has been opened, otherwise a platform-specific error_code.

Referenced by copy_file(), llvm::vfs::FileSystem::getBufferForFile(), llvm::NewArchiveMember::getFile(), llvm::MemoryBuffer::getFileAsStream(), getFileAux(), llvm::xray::loadInstrumentationMap(), llvm::xray::loadProfile(), llvm::xray::loadTraceFile(), llvm::lto::localCache(), md5_contents(), openNativeFileForReadWrite(), pathHasTraversal(), and llvm::vfs::InMemoryFileSystem::useNormalizedPaths().

◆ openFileForReadWrite()

std::error_code llvm::sys::fs::openFileForReadWrite	(	const Twine &	Name,
		int &	ResultFD,
		CreationDisposition	Disp,
		OpenFlags	Flags,
		unsigned	Mode = `0666`
	)

inline

Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor.

If the file does not exist, it is created.

The caller is responsible for closing the file descriptor once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
ResultFD	If the file could be opened successfully, its descriptor is stored in this location. Otherwise, this is set to -1.
Flags	Additional flags used to determine whether the file should be opened in, for example, read-write or in write-only mode.
Mode	The access permissions of the file, represented in octal.

Returns: errc::success if Name has been opened, otherwise a platform-specific error_code.

Definition at line 992 of file FileSystem.h.

References FA_Read, FA_Write, and openFile().

Referenced by createUniqueEntity(), getFD(), and getReadWriteFile().

◆ openFileForWrite()

std::error_code llvm::sys::fs::openFileForWrite	(	const Twine &	Name,
		int &	ResultFD,
		CreationDisposition	Disp = `CD_CreateAlways`,
		OpenFlags	Flags = `OF_None`,
		unsigned	Mode = `0666`
	)

inline

Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor.

If the file does not exist, it is created.

The caller is responsible for closing the file descriptor once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
ResultFD	If the file could be opened successfully, its descriptor is stored in this location. Otherwise, this is set to -1.
Flags	Additional flags used to determine whether the file should be opened in, for example, read-write or in write-only mode.
Mode	The access permissions of the file, represented in octal.

Returns: errc::success if Name has been opened, otherwise a platform-specific error_code.

Definition at line 951 of file FileSystem.h.

References FA_Write, and openFile().

Referenced by copy_file(), llvm::TarWriter::create(), getFD(), and llvm::WriteGraph().

◆ openNativeFile()

Expected<file_t> llvm::sys::fs::openNativeFile	(	const Twine &	Name,
		CreationDisposition	Disp,
		FileAccess	Access,
		OpenFlags	Flags,
		unsigned	Mode = `0666`
	)

Opens a file with the specified creation disposition, access mode, and flags and returns a platform-specific file object.

The caller is responsible for closing the file object once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
Disp	Value specifying the existing-file behavior.
Access	Value specifying whether to open the file in read, write, or read-write mode.
Flags	Additional flags.
Mode	The access permissions of the file, represented in octal.

Returns: errc::success if Name has been opened, otherwise a platform-specific error_code.

Referenced by openNativeFileForReadWrite(), openNativeFileForWrite(), and operator|=().

◆ openNativeFileForRead()

Expected<file_t> llvm::sys::fs::openNativeFileForRead	(	const Twine &	Name,
		OpenFlags	Flags = `OF_None`,
		SmallVectorImpl< char > *	RealPath = `nullptr`
	)

Opens the file with the given name in a read-only mode, returning its open file descriptor.

The caller is responsible for closing the freeing the file once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
RealPath	If nonnull, extra work is done to determine the real path of the opened file, and that path is stored in this location.

Returns: a platform-specific file descriptor if Name has been opened, otherwise an error object.

Referenced by openNativeFileForReadWrite().

◆ openNativeFileForReadWrite()

Expected<file_t> llvm::sys::fs::openNativeFileForReadWrite	(	const Twine &	Name,
		CreationDisposition	Disp,
		OpenFlags	Flags,
		unsigned	Mode = `0666`
	)

inline

Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor.

If the file does not exist, it is created.

The caller is responsible for closing the freeing the file once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
Flags	Additional flags used to determine whether the file should be opened in, for example, read-write or in write-only mode.
Mode	The access permissions of the file, represented in octal.

Returns: a platform-specific file descriptor if Name has been opened, otherwise an error object.

Definition at line 1012 of file FileSystem.h.

References closeFile(), disk_space(), F(), FA_Read, FA_Write, getUniqueID(), OF_None, openFileForRead(), openNativeFile(), and openNativeFileForRead().

◆ openNativeFileForWrite()

Expected<file_t> llvm::sys::fs::openNativeFileForWrite	(	const Twine &	Name,
		CreationDisposition	Disp,
		OpenFlags	Flags,
		unsigned	Mode = `0666`
	)

inline

Opens the file with the given name in a write-only or read-write mode, returning its open file descriptor.

If the file does not exist, it is created.

The caller is responsible for closing the freeing the file once they are finished with it.

Parameters

Name	The path of the file to open, relative or absolute.
Flags	Additional flags used to determine whether the file should be opened in, for example, read-write or in write-only mode.
Mode	The access permissions of the file, represented in octal.

Returns: a platform-specific file descriptor if Name has been opened, otherwise an error object.

Definition at line 970 of file FileSystem.h.

References FA_Write, and openNativeFile().

◆ operator &()

perms llvm::sys::fs::operator&	(	perms	l,
		perms	r
	)

inline

Definition at line 117 of file FileSystem.h.

◆ operator &=()

perms& llvm::sys::fs::operator&=	(	perms &	l,
		perms	r
	)

inline

Definition at line 125 of file FileSystem.h.

◆ operator|() [1/3]

perms llvm::sys::fs::operator\|	(	perms	l,
		perms	r
	)

inline

Definition at line 113 of file FileSystem.h.

◆ operator|() [2/3]

OpenFlags llvm::sys::fs::operator\|	(	OpenFlags	A,
		OpenFlags	B
	)

inline

Definition at line 879 of file FileSystem.h.

◆ operator|() [3/3]

FileAccess llvm::sys::fs::operator\|	(	FileAccess	A,
		FileAccess	B
	)

inline

Definition at line 888 of file FileSystem.h.

◆ operator|=() [1/3]

perms& llvm::sys::fs::operator\|=	(	perms &	l,
		perms	r
	)

inline

Definition at line 121 of file FileSystem.h.

◆ operator|=() [2/3]

OpenFlags& llvm::sys::fs::operator\|=	(	OpenFlags &	A,
		OpenFlags	B
	)

inline

Definition at line 883 of file FileSystem.h.

References B.

◆ operator|=() [3/3]

FileAccess& llvm::sys::fs::operator\|=	(	FileAccess &	A,
		FileAccess	B
	)

inline

Definition at line 892 of file FileSystem.h.

References B, Name, openFile(), and openNativeFile().

◆ operator~()

perms llvm::sys::fs::operator~ ( perms x )

inline

Definition at line 129 of file FileSystem.h.

◆ real_path()

std::error_code llvm::sys::fs::real_path	(	const Twine &	path,
		SmallVectorImpl< char > &	output,
		bool	expand_tilde = `false`
	)

Collapse all .

and .. patterns, resolve all symlinks, and optionally expand ~ expressions to the user's home directory.

Parameters

path	The path to resolve.
output	The location to store the resolved path.
expand_tilde	If true, resolves ~ expressions to the user's home directory.

Referenced by llvm::sys::fs::file_status::file_status(), and pathHasTraversal().

◆ remove()

std::error_code llvm::sys::fs::remove	(	const Twine &	path,
		bool	IgnoreNonExisting = `true`
	)

Remove path.

Equivalent to POSIX remove().

Parameters

path	Input path.

Returns: errc::success if path has been removed or didn't exist, otherwise a platform-specific error code. If IgnoreNonExisting is false, also returns error if the file didn't exist.

Referenced by llvm::LTOCodeGenerator::compileOptimized(), llvm::MachineRegisterInfo::disableCalleeSavedRegister(), llvm::sys::fs::TempFile::discard(), EliminateBlockCases(), ExecGraphViewer(), llvm::DomTreeBuilder::SemiNCAInfo< DomTreeT >::ChildrenGetter< Inverse >::Get(), getHostID(), isDebug(), isFuncOrderCorrect(), isTerminalReg(), llvm::LockFileManager::LockFileManager(), llvm::LPPassManager::markLoopAsDeleted(), llvm::pruneCache(), llvm::simple_ilist< MachineInstr, Options... >::remove(), RemoveFromWorklist(), llvm::SelectionDAGISel::SelectCodeCommon(), llvm::FileRemover::setFile(), llvm::UnrollLoop(), llvm::LockFileManager::unsafeRemoveLockFile(), writeGeneratedObject(), llvm::LTOCodeGenerator::writeMergedModules(), llvm::FileRemover::~FileRemover(), and llvm::LockFileManager::~LockFileManager().

◆ remove_directories()

std::error_code llvm::sys::fs::remove_directories	(	const Twine &	path,
		bool	IgnoreErrors = `true`
	)

Recursively delete a directory.

Parameters

path	Input path.

Returns: errc::success if path has been removed or didn't exist, otherwise a platform-specific error code.

Referenced by llvm::sys::fs::file_status::file_status().

◆ rename()

std::error_code llvm::sys::fs::rename	(	const Twine &	from,
		const Twine &	to
	)

Rename from to to.

Files are renamed as if by POSIX rename(), except that on Windows there may be a short interval of time during which the destination file does not exist.

Parameters

from	The path to rename from.
to	The path to rename to. This is created.

Referenced by llvm::sys::fs::file_status::file_status().

◆ resize_file()

std::error_code llvm::sys::fs::resize_file	(	int	FD,
		uint64_t	Size
	)

Resize path to size.

File is resized as if by POSIX truncate().

Parameters

FD	Input file descriptor.
Size	Size to resize to.

Returns: errc::success if path has been resized to size, otherwise a platform-specific error_code.

Referenced by createOnDiskBuffer(), and llvm::sys::fs::file_status::file_status().

◆ set_current_path()

std::error_code llvm::sys::fs::set_current_path ( const Twine & path )

Set the current path.

Parameters

path	The path to set.

Returns: errc::success if the current path was successfully set, otherwise a platform-specific error_code.

Referenced by llvm::sys::fs::file_status::file_status(), and pathHasTraversal().

◆ setLastAccessAndModificationTime() [1/2]

std::error_code llvm::sys::fs::setLastAccessAndModificationTime	(	int	FD,
		TimePoint<>	AccessTime,
		TimePoint<>	ModificationTime
	)

Set the file modification and access time.

Returns: errc::success if the file times were successfully set, otherwise a platform-specific error_code or errc::function_not_supported on platforms where the functionality isn't available.

Referenced by file_size(), and setLastAccessAndModificationTime().

◆ setLastAccessAndModificationTime() [2/2]

std::error_code llvm::sys::fs::setLastAccessAndModificationTime	(	int	FD,
		TimePoint<>	Time
	)

inline

Simpler version that sets both file modification and access time to the same time.

Definition at line 698 of file FileSystem.h.

References setLastAccessAndModificationTime(), and status_known().

◆ setPermissions()

std::error_code llvm::sys::fs::setPermissions	(	const Twine &	Path,
		perms	Permissions
	)

Set file permissions.

Parameters

Path	File to set permissions on.
Permissions	New file permissions.

Returns: errc::success if the permissions were successfully set, otherwise a platform-specific error_code.

Note: On Windows, all permissions except *_write are ignored. Using any of owner_write, group_write, or all_write will make the file writable. Otherwise, the file will be marked as read-only.

Referenced by is_symlink_file().

◆ status() [1/2]

std::error_code llvm::sys::fs::status	(	const Twine &	path,
		file_status &	result,
		bool	follow = `true`
	)

Get file status as if by POSIX stat().

Parameters

path	Input path.
result	Set to the file status.
follow	When true, follows symlinks. Otherwise, the symlink itself is statted.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Referenced by llvm::canConstantFoldCallTo(), llvm::detail::IEEEFloat::convertFromSignExtendedInteger(), llvm::APFloat::convertToInteger(), llvm::FileOutputBuffer::create(), DecodeJMPL(), DecodeMem(), DecodeReturn(), DecodeSWAP(), DecodeTRAP(), llvm::symbolize::LLVMSymbolizer::DemangleName(), llvm::vfs::FileSystem::exists(), file_size(), llvm::sys::fs::file_status::file_status(), get_file_type(), llvm::NewArchiveMember::getFile(), llvm::vfs::File::getName(), getOpenFileImpl(), getPermissions(), getReadWriteFile(), getUniqueID(), is_directory(), is_other(), is_regular_file(), is_symlink_file(), llvm::sys::fs::directory_entry::path(), pathHasTraversal(), llvm::pruneCache(), llvm::raw_fd_ostream::raw_fd_ostream(), shouldUseMmap(), llvm::sys::fs::directory_entry::type(), llvm::vfs::InMemoryFileSystem::useNormalizedPaths(), and llvm::detail::IEEEFloat::~IEEEFloat().

◆ status() [2/2]

std::error_code llvm::sys::fs::status	(	int	FD,
		file_status &	Result
	)

A version for when a file descriptor is already available.

◆ status_known() [1/2]

bool llvm::sys::fs::status_known ( const basic_file_status & s )

Is status available?

Parameters

s	Input file status.

Returns: True if status() != status_error.

Definition at line 1026 of file Path.cpp.

References llvm::sys::fs::basic_file_status::type().

Referenced by exists(), and setLastAccessAndModificationTime().

◆ status_known() [2/2]

std::error_code llvm::sys::fs::status_known	(	const Twine &	path,
		bool &	result
	)

Is status available?

Parameters

path	Input path.
result	Set to true if status() != status_error.

Returns: errc::success if result has been successfully set, otherwise a platform-specific error_code.

Variable Documentation

◆ kInvalidFile

const file_t llvm::sys::fs::kInvalidFile

Namespaces

Classes

Typedefs

Enumerations

Functions

Variables

Physical Observers

Typedef Documentation

◆ file_t

Enumeration Type Documentation

◆ AccessMode

◆ CreationDisposition

◆ file_type

◆ FileAccess

◆ OpenFlags

◆ perms

Function Documentation

◆ access()

◆ can_execute()

◆ can_write()

◆ closeFile()

◆ copy_file() [1/2]

◆ copy_file() [2/2]

◆ copy_file_internal()

◆ create_directories()

◆ create_directory()

◆ create_hard_link()

◆ create_link()

◆ createTemporaryFile() [1/4]

◆ createTemporaryFile() [2/4]

◆ createTemporaryFile() [3/4]

◆ createTemporaryFile() [4/4]

◆ createUniqueDirectory()

◆ createUniqueFile() [1/3]

◆ createUniqueFile() [2/3]

◆ createUniqueFile() [3/3]

◆ current_path()

◆ disk_space()

◆ equivalent() [1/3]

◆ equivalent() [2/3]

◆ equivalent() [3/3]

◆ exists() [1/2]

◆ exists() [2/2]

◆ expand_tilde()

◆ file_size()

◆ get_file_type()

◆ getMainExecutable()

◆ getPermissions()

◆ getPotentiallyUniqueFileName()

◆ getPotentiallyUniqueTempFileName()

◆ getUniqueID()

◆ is_directory() [1/3]

◆ is_directory() [2/3]

◆ is_directory() [3/3]

◆ is_local() [1/4]

◆ is_local() [2/4]

◆ is_local() [3/4]

◆ is_local() [4/4]

◆ is_other() [1/2]

◆ is_other() [2/2]

◆ is_regular_file() [1/3]

◆ is_regular_file() [2/3]

◆ is_regular_file() [3/3]

◆ is_symlink_file() [1/3]

◆ is_symlink_file() [2/3]

◆ is_symlink_file() [3/3]

◆ make_absolute() [1/2]

◆ make_absolute() [2/2]

◆ md5_contents() [1/2]

◆ md5_contents() [2/2]

◆ openFile()

◆ openFileForRead()

◆ openFileForReadWrite()

◆ openFileForWrite()

◆ openNativeFile()

◆ openNativeFileForRead()

◆ openNativeFileForReadWrite()

◆ openNativeFileForWrite()

◆ operator &()

◆ operator &=()