Module rustix::io

I/O operations.

Modules

epoll

epoll support.

Structs

DupFlags

O_* constants for use with dup2.

Error

The error type for rustix APIs.

EventfdFlags

The EFD_* flags accepted by eventfd.

IoSlice

A buffer type used with Write::write_vectored.

IoSliceMut

A buffer type used with Read::read_vectored.

MapFlags

MAP_* flags for use with mmap.

MlockFlags

MLOCK_* flags for use with mlock_with.

MprotectFlags

PROT_* flags for use with mprotect.

MremapFlags

MREMAP_* flags for use with mremap.

MsyncFlags

MS_* flags for use with msync.

OwnedFd

A wrapper around io_lifetimes::OwnedFd which closes the file descriptor using rustix’s own close rather than libc’s close.

PipeFlags

O_* constants for use with pipe_with.

PollFd

struct pollfd—File descriptor and flags for use with poll.

PollFlags

POLL* flags for use with poll.

ProtFlags

PROT_* flags for use with mmap.

ReadWriteFlags

RWF_* constants for use with preadv2 and pwritev2.

UserfaultfdFlags

The O_* flags accepted by userfaultfd.

Enums

Advice

POSIX_MADV_* constants for use with madvise.

SeekFrom

Enumeration of possible methods to seek within an I/O object.

Constants

ICANON

ICANON

PIPE_BUF

PIPE_BUF—The maximum length at which writes to a pipe are atomic.

Functions

close^⚠

close(raw_fd)—Closes a RawFd directly.

dup

dup(fd)—Creates a new OwnedFd instance that shares the same underlying file description as fd.

dup2

dup2(fd, new)—Creates a new OwnedFd instance that shares the same underlying file description as the existing OwnedFd instance, closing new and reusing its file descriptor.

dup3

dup3(fd, new, flags)—Creates a new OwnedFd instance that shares the same underlying file description as the existing OwnedFd instance, closing new and reusing its file descriptor, with flags.

eventfd

eventfd(initval, flags)—Creates a file descriptor for event notification.

ioctl_blkpbszget

ioctl(fd, BLKPBSZGET)—Returns the physical block size of a block device.

ioctl_blksszget

ioctl(fd, BLKSSZGET)—Returns the logical block size of a block device.

ioctl_fionbio

ioctl(fd, FIONBIO, &value)—Enables or disables non-blocking mode.

ioctl_fionread

ioctl(fd, FIONREAD)—Returns the number of bytes ready to be read.

ioctl_tcgets

ioctl(fd, TCGETS)—Get terminal attributes.

ioctl_tiocexcl

ioctl(fd, TIOCEXCL)—Enables exclusive mode on a terminal.

ioctl_tiocgwinsz

ioctl(fd, TIOCGWINSZ)—Get the current terminal window size.

ioctl_tiocnxcl

ioctl(fd, TIOCNXCL)—Disables exclusive mode on a terminal.

is_read_write

Returns a pair of booleans indicating whether the file descriptor is readable and/or writable, respectively.

isatty

isatty(fd)—Tests whether a file descriptor refers to a terminal.

madvise^⚠

posix_madvise(addr, len, advice)—Declares an expected access pattern for a memory-mapped file.

mlock^⚠

mlock(ptr, len)—Lock memory into RAM.

mlock_with^⚠

mlock2(ptr, len, flags)—Lock memory into RAM, with flags.

mmap^⚠

mmap(ptr, len, prot, flags, fd, offset)—Create a file-backed memory mapping.

mmap_anonymous^⚠

mmap(ptr, len, prot, MAP_ANONYMOUS | flags, -1, 0)—Create an anonymous memory mapping.

mprotect^⚠

mprotect(ptr, len, flags)

mremap^⚠

mremap(old_address, old_size, new_size, flags)—Resize, modify, and/or move a memory mapping.

mremap_fixed^⚠

mremap(old_address, old_size, new_size, MREMAP_FIXED | flags)—Resize, modify, and/or move a memory mapping to a specific address.

msync^⚠

msync(addr, len, flags)—Declares an expected access pattern for a memory-mapped file.

munlock^⚠

munlock(ptr, len)—Unlock memory.

munmap^⚠

munmap(ptr, len)

pipe

pipe()—Creates a pipe.

pipe_with

pipe2(flags)—Creates a pipe, with flags.

poll

poll(self.fds, timeout)

pread

pread(fd, buf, offset)—Reads from a file at a given position.

preadv

preadv(fd, bufs, offset)—Reads from a file at a given position into multiple buffers.

preadv2

preadv2(fd, bufs, offset, flags)—Reads data, with several options.

proc_self_fdprocfs

Returns a handle to Linux’s /proc/self/fd directory.

proc_self_fdinfo_fdprocfs

Returns a handle to a Linux /proc/self/fdinfo/<fd> file.

proc_self_mapsprocfs

Returns a handle to a Linux /proc/self/maps file.

proc_self_pagemapprocfs

Returns a handle to a Linux /proc/self/pagemap file.

pwrite

pwrite(fd, bufs)—Writes to a file at a given position.

pwritev

pwritev(fd, bufs, offset)—Writes to a file at a given position from multiple buffers.

pwritev2

pwritev2(fd, bufs, offset, flags)—Writes data, with several options.

read

read(fd, buf)—Reads from a stream.

readv

readv(fd, bufs)—Reads from a stream into multiple buffers.

stderr^⚠

STDERR_FILENO—Standard error, borrowed.

stdin^⚠

STDIN_FILENO—Standard input, borrowed.

stdout^⚠

STDOUT_FILENO—Standard output, borrowed.

take_stderr^⚠

STDERR_FILENO—Standard error, owned.

take_stdin^⚠

STDIN_FILENO—Standard input, owned.

take_stdout^⚠

STDOUT_FILENO—Standard output, owned.

ttynameprocfs

ttyname_r(fd)

userfaultfd^⚠

userfaultfd(flags)

with_retrying

Call f until it either succeeds or fails other than Error::INTR.

write

write(fd, buf)—Writes to a stream.

writev

writev(fd, bufs)—Writes to a stream from multiple buffers.

Type Definitions

Result

A specialized Result type for rustix APIs.

Tcflag

tcflag_t—A type for the flags fields of Termios.

Termios

struct termios for use with ioctl_tcgets.

Winsize

struct winsize for use with ioctl_tiocgwinsz.