devela::all

Struct LINUX_IOCTL

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pub struct LINUX_IOCTL;
Available on crate feature linux only.
Expand description

Linux ioctl constants.

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impl LINUX_IOCTL

§Get and set terminal attributes

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pub const TCGETS: c_ulong = 21_505u64

Get the current serial port settings.

Argument: struct termios *argp

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pub const TCSETS: c_ulong = 21_506u64

Set the current serial port settings.

Argument: const struct termios *argp

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pub const TCSETSW: c_ulong = 21_507u64

Allow the output buffer to drain, and set the current serial port settings.

Argument: const struct termios *argp

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pub const TCSETSF: c_ulong = 21_508u64

Allow the output buffer to drain, discard pending input, and set the current serial port settings.

Argument: const struct termios *argp

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pub const TCGETS2: c_ulong = 2_150_388_778u64

Get the current serial port settings. (termios2)

Argument: struct termios2 *argp

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pub const TCSETS2: c_ulong = 1_076_646_955u64

Set the current serial port settings. (termios2)

Argument: const struct termios2 *argp

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pub const TCSETSW2: c_ulong = 1_076_646_956u64

Allow the output buffer to drain, and set the current serial port settings. (termios2)

Argument: const struct termios2 *argp

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pub const TCSETSF2: c_ulong = 1_076_646_957u64

Allow the output buffer to drain, discard pending input, and set the current serial port settings. (termios2)

Argument: const struct termios2 *argp

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pub const TCGETA: c_ulong = 21_509u64

Get the current serial port settings. (termio)

Argument: struct termio *argp

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pub const TCSETA: c_ulong = 21_510u64

Set the current serial port settings. (termio)

Argument: const struct termio *argp

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pub const TCSETAW: c_ulong = 21_511u64

Allow the output buffer to drain, and set the current serial port settings. (termio)

Argument: const struct termio *argp

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pub const TCSETAF: c_ulong = 21_512u64

Allow the output buffer to drain, discard pending input, and set the current serial port settings. (termio)

Argument: const struct termio *argp

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impl LINUX_IOCTL

§Software flow control

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pub const TCXONC: c_ulong = 21_514u64

Equivalent to tcflow(fd, arg).

Argument: int arg

See tcflow(3) for the argument values TCOOFF, TCOON, TCIOFF, TCION.

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pub const TCOOFF: c_int = 0i32

Suspends output.

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pub const TCOON: c_int = 1i32

Resumes suspended output.

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pub const TCIOFF: c_int = 2i32

Sends a STOP character to the terminal, to stop the terminal from sending any further input.

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pub const TCION: c_int = 3i32

Sends a START character to the terminal, to tell the terminal that it can resume sending input.

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impl LINUX_IOCTL

§Exclusive mode

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pub const TIOCEXCL: c_ulong = 21_516u64

Put the terminal into exclusive mode.

No further open(2) operations on the terminal are permitted. (They fail with EBUSY, except for a process with the CAP_SYS_ADMIN capability.)

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pub const TIOCNXCL: c_ulong = 21_517u64

Disable exclusive mode.

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pub const TIOCGEXCL: c_ulong = 2_147_767_360u64

(since Linux 3.8) If the terminal is currently in exclusive mode, place a nonzero value in the location pointed to by argp; otherwise, place zero in *argp.

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impl LINUX_IOCTL

§Faking input

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pub const TIOCSTI: c_ulong = 21_522u64

Insert the given byte in the input queue.

Argument: const char *argp

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impl LINUX_IOCTL

§Get and set window size

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pub const TIOCGWINSZ: c_ulong = 21_523u64

Get window size.

Argument: struct winsize *argp

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pub const TIOCSWINSZ: c_ulong = 21_524u64

Set window size.

Argument: const struct winsize *argp

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impl LINUX_IOCTL

§Modem control

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pub const TIOCMGET: c_ulong = 21_525u64

Get the status of modem bits.

Argument: int *argp

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pub const TIOCMBIS: c_ulong = 21_526u64

Set the indicated modem bits.

Argument: const int *argp

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pub const TIOCMBIC: c_ulong = 21_527u64

Clear the indicated modem bits.

Argument: const int *argp

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pub const TIOCMSET: c_ulong = 21_528u64

Set the status of modem bits.

Argument: const int *argp

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pub const TIOCM_LE: c_int = 1i32

DSR (data set ready/line enable)

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pub const TIOCM_DTR: c_int = 2i32

DTR (data terminal ready)

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pub const TIOCM_RTS: c_int = 4i32

RTS (request to send)

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pub const TIOCM_ST: c_int = 8i32

Secondary TXD (transmit)

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pub const TIOCM_SR: c_int = 16i32

Secondary RXD (receive)

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pub const TIOCM_CTS: c_int = 32i32

CTS (clear to send)

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pub const TIOCM_CAR: c_int = 64i32

DCD (data carrier detect)

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pub const TIOCM_CD: c_int = 64i32

see TIOCM_CAR

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pub const TIOCM_RNG: c_int = 128i32

RNG (ring)

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pub const TIOCM_RI: c_int = 128i32

see TIOCM_RNG

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pub const TIOCM_DSR: c_int = 256i32

DSR (data set ready)

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impl LINUX_IOCTL

§Marking a line as local

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pub const TIOCGSOFTCAR: c_ulong = 21_529u64

(“Get software carrier flag”)

Get the status of the CLOCAL flag in the c_cflag field of the termios structure.

Argument: int *argp

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pub const TIOCSSOFTCAR: c_ulong = 21_530u64

(“Set software carrier flag”)

Set the CLOCAL flag in the termios structure when *argp is nonzero, and clear it otherwise.

Argument: const int *argp

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impl LINUX_IOCTL

§Buffer count and flushing

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pub const FIONREAD: c_ulong = 21_531u64

Get the number of bytes in the input buffer.

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pub const TIOCINQ: c_ulong = 21_531u64

Same as FIONREAD.

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pub const TIOCOUTQ: c_ulong = 21_521u64

Get the number of bytes in the output buffer.

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pub const TCFLSH: c_ulong = 21_515u64

See tcflush(3) for the argument values TCIFLUSH, TCOFLUSH, TCIOFLUSH.

Equivalent to tcflush(fd, arg).

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pub const TIOCSERGETLSR: c_ulong = 21_593u64

Get line status register.

Status register has TIOCSER_TEMT bit set when output buffer is empty and also hardware transmitter is physically empty.

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impl LINUX_IOCTL

§Linux-specific

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pub const TIOCLINUX: c_ulong = 21_532u64

Linux-specific ioctls.

The action of the following ioctls depends on the first byte in the struct pointed to by argp, referred to here as the subcode. These are legal only for the superuser or the owner of the current terminal. Symbolic subcodes are available in <linux/tiocl.h> since Linux 2.5.71.

See https://man7.org/linux/man-pages/man2/ioctl_console.2.html.

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impl LINUX_IOCTL

§Redirecting console output

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pub const TIOCCONS: c_ulong = 21_533u64

Redirect output that would have gone to /dev/console or /dev/tty0 to the given terminal.

Argument: void

If that was a pseudoterminal master, send it to the slave. Before Linux 2.6.10, anybody can do this as long as the output was not redirected yet; since Linux 2.6.10, only a process with the CAP_SYS_ADMIN capability may do this. If output was redirected already, then EBUSY is returned, but redirection can be stopped by using this ioctl with fd pointing at /dev/console or /dev/tty0.

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impl LINUX_IOCTL

§Pseudoterminal ioctls

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pub const TIOCPKT: c_ulong = 21_536u64

Enable (when *argp is nonzero) or disable packet mode.

Argument: const int *argp

Can be applied to the master side of a pseudoterminal only (and will return ENOTTY otherwise).

In packet mode, each subsequent read(2) will return a packet that either contains a single nonzero control byte, or has a single byte containing zero (‘\0’) followed by data written on the slave side of the pseudoterminal.

If the first byte is not TIOCPKT_DATA (0), it is an OR of one or more of the following bits:

  • TIOCPKT_FLUSHREAD The read queue for the terminal is flushed.
  • TIOCPKT_FLUSHWRITE The write queue for the terminal is flushed.
  • TIOCPKT_STOP Output to the terminal is stopped.
  • TIOCPKT_START Output to the terminal is restarted.
  • TIOCPKT_DOSTOP The start and stop characters are ^S/^Q.
  • TIOCPKT_NOSTOP The start and stop characters are not ^S/^Q.
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pub const TIOCSPTLCK: c_ulong = 1_074_025_521u64

Set (if *argp is nonzero) or remove (if *argp is zero) the lock on the pseudoterminal slave device.

Argument: int *argp

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pub const TIOCGPKT: c_ulong = 2_147_767_352u64

Return the current packet mode setting in the integer pointed to by argp.

Argument: const int *argp

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pub const TIOCGPTLCK: c_ulong = 2_147_767_353u64

Place the current lock state of the pseudoterminal slave device in the location pointed to by argp.

Argument: int *argp

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pub const TIOCGPTPEER: c_ulong = 21_569u64

Open and return a new file descriptor that refers to the peer pseudoterminal slave device.

Argument: int flags

Given a file descriptor in fd that refers to a pseudoterminal master, open (with the given open(2)-style flags) and return a new file descriptor that refers to the peer pseudoterminal slave device.

This operation can be performed regardless of whether the pathname of the slave device is accessible through the calling process’s mount namespace.

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impl LINUX_IOCTL

§Controlling terminal

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pub const TIOCSCTTY: c_ulong = 21_518u64

Make the given terminal the controlling terminal of the calling process.

Argument: int arg

The calling process must be a session leader and not have a controlling terminal already. For this case, arg should be specified as zero.

If this terminal is already the controlling terminal of a different session group, then the ioctl fails with EPERM, unless the caller has the CAP_SYS_ADMIN capability and arg equals 1, in which case the terminal is stolen, and all processes that had it as controlling terminal lose it.

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pub const TIOCNOTTY: c_ulong = 21_538u64

Give up this controlling terminal.

Argument: void

If the process was session leader, then send SIGHUP and SIGCONT to the foreground process group and all processes in the current session lose their controlling terminal.

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impl LINUX_IOCTL

§Line discipline

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pub const TIOCSETD: c_ulong = 21_539u64

Get the line discipline of the terminal.

Argument: int *argp

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pub const TIOCGETD: c_ulong = 21_540u64

Set the line discipline of the terminal.

Argument: const int *argp

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impl LINUX_IOCTL

§Sending a break

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pub const TCSBRK: c_ulong = 21_513u64

Equivalent to tcsendbreak(fd, arg).

Argument: int arg

If the terminal is using asynchronous serial data transmission, and arg is zero, then send a break (a stream of zero bits) for between 0.25 and 0.5 seconds. If the terminal is not using asynchronous serial data transmission, then either a break is sent, or the function returns without doing anything. When arg is nonzero, nobody knows what will happen.

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pub const TCSBRKP: c_ulong = 21_541u64

So-called “POSIX version” of TCSBRK.

It treats nonzero arg as a time interval measured in deciseconds, and does nothing when the driver does not support breaks.

Argument: int arg

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pub const TIOCSBRK: c_ulong = 21_543u64

Turn break on, that is, start sending zero bits.

Argument: void

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pub const TIOCCBRK: c_ulong = 21_544u64

Turn break off, that is, stop sending zero bits.

Argument: void

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impl LINUX_IOCTL

§Process group and session ID
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pub const TIOCGSID: c_ulong = 21_545u64

Get the session ID of the given terminal.

Argument: pid_t *argp

This fails with the error ENOTTY if the terminal is not a master pseudoterminal and not our controlling terminal.

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pub const TIOCGPGRP: c_ulong = 21_519u64

Get the process group ID of the foreground process group on this terminal.

Argument: pid_t *argp

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pub const TIOCSPGRP: c_ulong = 21_520u64

Set the foreground process group ID of this terminal.

Argument: const pid_t *argp

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impl LINUX_IOCTL

§Miscellaneous

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pub const FIONBIO: c_ulong = 21_537u64

Set non-blocking I/O mode if the argument is non-zero.

In non-blocking mode, read(2) or write(2) calls return -1 and set errno to EAGAIN immediately when no data is available.

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pub const TIOCGSERIAL: c_ulong = 21_534u64

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pub const TIOCSSERIAL: c_ulong = 21_535u64

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pub const TIOCGRS485: c_ulong = 21_550u64

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pub const TIOCSRS485: c_ulong = 21_551u64

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pub const TIOCGPTN: c_ulong = 2_147_767_344u64

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pub const TIOCGDEV: c_ulong = 2_147_767_346u64

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pub const TCGETX: c_ulong = 21_554u64

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pub const TCSETX: c_ulong = 21_555u64

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pub const TCSETXF: c_ulong = 21_556u64

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pub const TCSETXW: c_ulong = 21_557u64

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pub const TIOCSIG: c_ulong = 1_074_025_526u64

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pub const TIOCVHANGUP: c_ulong = 21_559u64

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pub const FIONCLEX: c_ulong = 21_584u64

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pub const FIOCLEX: c_ulong = 21_585u64

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pub const FIOASYNC: c_ulong = 21_586u64

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pub const TIOCSERCONFIG: c_ulong = 21_587u64

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pub const TIOCSERGWILD: c_ulong = 21_588u64

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pub const TIOCSERSWILD: c_ulong = 21_589u64

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pub const TIOCGLCKTRMIOS: c_ulong = 21_590u64

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pub const TIOCSLCKTRMIOS: c_ulong = 21_591u64

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pub const TIOCSERGSTRUCT: c_ulong = 21_592u64

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pub const TIOCSERGETMULTI: c_ulong = 21_594u64

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pub const TIOCSERSETMULTI: c_ulong = 21_595u64

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pub const TIOCMIWAIT: c_ulong = 21_596u64

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pub const TIOCGICOUNT: c_ulong = 21_597u64

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pub const BLKIOMIN: c_ulong = 4_728u64

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pub const BLKIOOPT: c_ulong = 4_729u64

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pub const BLKSSZGET: c_ulong = 4_712u64

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pub const BLKPBSZGET: c_ulong = 4_731u64

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