file-descriptor.hh File Reference

#include "lix/libutil/error.hh"
#include "lix/libutil/generator.hh"

Go to the source code of this file.

Classes
class	nix::AutoCloseFD
class	nix::Pipe

Functions
std::string	nix::readLine (int fd)
void	nix::writeLine (int fd, std::string s)
std::string	nix::readFile (int fd)
void	nix::readFull (int fd, char *buf, size_t count)
void	nix::writeFull (int fd, std::string_view s, bool allowInterrupts)
std::string	nix::drainFD (int fd, bool block, const size_t reserveSize)
std::string	nix::guessOrInventPathFromFD (int fd)
Generator< Bytes >	nix::drainFDSource (int fd, bool block)
void	nix::closeExtraFDs ()
void	nix::closeOnExec (int fd)
	nix::MakeError (EndOfFile, Error)

Function Documentation

closeExtraFDs()

void nix::closeExtraFDs

(

)

Close all file descriptors except stdio fds (ie 0, 1, 2). Good practice in child processes.

closeOnExec()

void nix::closeOnExec

(

int

fd

)

Set the close-on-exec flag for the given file descriptor.

drainFD()

std::string nix::drainFD	(	int	fd,
		bool	block = true,
		const size_t	reserveSize = 0 )

Read a file descriptor until EOF occurs.

readFile()

std::string nix::readFile

(

int

fd

)

Read the contents of a file into a string.

readFull()

void nix::readFull	(	int	fd,
		char *	buf,
		size_t	count )

Wrappers arount read()/write() that read/write exactly the requested number of bytes.

readLine()

std::string nix::readLine

(

int

fd

)

Read a line from a file descriptor.

writeLine()

void nix::writeLine	(	int	fd,
		std::string	s )

Write a line to a file descriptor.