766 lines
16 KiB
C
766 lines
16 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* setserial implementation for busybox
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*
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*
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* Copyright (C) 2011 Marek Bečka <yuen@klacno.sk>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this source tree.
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*/
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//config:config SETSERIAL
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//config: bool "setserial (6.6 kb)"
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//config: default y
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//config: select PLATFORM_LINUX
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//config: help
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//config: Retrieve or set Linux serial port.
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//applet:IF_SETSERIAL(APPLET_NOEXEC(setserial, setserial, BB_DIR_BIN, BB_SUID_DROP, setserial))
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//kbuild:lib-$(CONFIG_SETSERIAL) += setserial.o
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#include "libbb.h"
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#include <assert.h>
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#ifndef PORT_UNKNOWN
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# define PORT_UNKNOWN 0
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#endif
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#ifndef PORT_8250
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# define PORT_8250 1
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#endif
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#ifndef PORT_16450
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# define PORT_16450 2
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#endif
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#ifndef PORT_16550
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# define PORT_16550 3
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#endif
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#ifndef PORT_16550A
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# define PORT_16550A 4
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#endif
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#ifndef PORT_CIRRUS
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# define PORT_CIRRUS 5
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#endif
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#ifndef PORT_16650
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# define PORT_16650 6
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#endif
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#ifndef PORT_16650V2
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# define PORT_16650V2 7
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#endif
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#ifndef PORT_16750
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# define PORT_16750 8
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#endif
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#ifndef PORT_STARTECH
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# define PORT_STARTECH 9
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#endif
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#ifndef PORT_16C950
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# define PORT_16C950 10
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#endif
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#ifndef PORT_16654
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# define PORT_16654 11
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#endif
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#ifndef PORT_16850
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# define PORT_16850 12
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#endif
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#ifndef PORT_RSA
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# define PORT_RSA 13
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#endif
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#ifndef PORT_NS16550A
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# define PORT_NS16550A 14
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#endif
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#ifndef PORT_XSCALE
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# define PORT_XSCALE 15
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#endif
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#ifndef PORT_RM9000
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# define PORT_RM9000 16
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#endif
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#ifndef PORT_OCTEON
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# define PORT_OCTEON 17
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#endif
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#ifndef PORT_AR7
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# define PORT_AR7 18
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#endif
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#ifndef PORT_U6_16550A
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# define PORT_U6_16550A 19
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#endif
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#ifndef ASYNCB_HUP_NOTIFY
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# define ASYNCB_HUP_NOTIFY 0
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#endif
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#ifndef ASYNCB_FOURPORT
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# define ASYNCB_FOURPORT 1
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#endif
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#ifndef ASYNCB_SAK
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# define ASYNCB_SAK 2
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#endif
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#ifndef ASYNCB_SPLIT_TERMIOS
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# define ASYNCB_SPLIT_TERMIOS 3
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#endif
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#ifndef ASYNCB_SPD_HI
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# define ASYNCB_SPD_HI 4
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#endif
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#ifndef ASYNCB_SPD_VHI
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# define ASYNCB_SPD_VHI 5
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#endif
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#ifndef ASYNCB_SKIP_TEST
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# define ASYNCB_SKIP_TEST 6
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#endif
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#ifndef ASYNCB_AUTO_IRQ
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# define ASYNCB_AUTO_IRQ 7
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#endif
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#ifndef ASYNCB_SESSION_LOCKOUT
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# define ASYNCB_SESSION_LOCKOUT 8
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#endif
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#ifndef ASYNCB_PGRP_LOCKOUT
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# define ASYNCB_PGRP_LOCKOUT 9
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#endif
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#ifndef ASYNCB_CALLOUT_NOHUP
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# define ASYNCB_CALLOUT_NOHUP 10
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#endif
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#ifndef ASYNCB_SPD_SHI
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# define ASYNCB_SPD_SHI 12
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#endif
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#ifndef ASYNCB_LOW_LATENCY
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# define ASYNCB_LOW_LATENCY 13
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#endif
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#ifndef ASYNCB_BUGGY_UART
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# define ASYNCB_BUGGY_UART 14
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#endif
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#ifndef ASYNC_HUP_NOTIFY
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# define ASYNC_HUP_NOTIFY (1U << ASYNCB_HUP_NOTIFY)
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#endif
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#ifndef ASYNC_FOURPORT
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# define ASYNC_FOURPORT (1U << ASYNCB_FOURPORT)
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#endif
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#ifndef ASYNC_SAK
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# define ASYNC_SAK (1U << ASYNCB_SAK)
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#endif
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#ifndef ASYNC_SPLIT_TERMIOS
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# define ASYNC_SPLIT_TERMIOS (1U << ASYNCB_SPLIT_TERMIOS)
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#endif
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#ifndef ASYNC_SPD_HI
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# define ASYNC_SPD_HI (1U << ASYNCB_SPD_HI)
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#endif
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#ifndef ASYNC_SPD_VHI
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# define ASYNC_SPD_VHI (1U << ASYNCB_SPD_VHI)
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#endif
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#ifndef ASYNC_SKIP_TEST
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# define ASYNC_SKIP_TEST (1U << ASYNCB_SKIP_TEST)
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#endif
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#ifndef ASYNC_AUTO_IRQ
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# define ASYNC_AUTO_IRQ (1U << ASYNCB_AUTO_IRQ)
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#endif
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#ifndef ASYNC_SESSION_LOCKOUT
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# define ASYNC_SESSION_LOCKOUT (1U << ASYNCB_SESSION_LOCKOUT)
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#endif
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#ifndef ASYNC_PGRP_LOCKOUT
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# define ASYNC_PGRP_LOCKOUT (1U << ASYNCB_PGRP_LOCKOUT)
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#endif
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#ifndef ASYNC_CALLOUT_NOHUP
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# define ASYNC_CALLOUT_NOHUP (1U << ASYNCB_CALLOUT_NOHUP)
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#endif
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#ifndef ASYNC_SPD_SHI
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# define ASYNC_SPD_SHI (1U << ASYNCB_SPD_SHI)
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#endif
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#ifndef ASYNC_LOW_LATENCY
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# define ASYNC_LOW_LATENCY (1U << ASYNCB_LOW_LATENCY)
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#endif
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#ifndef ASYNC_BUGGY_UART
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# define ASYNC_BUGGY_UART (1U << ASYNCB_BUGGY_UART)
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#endif
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#ifndef ASYNC_SPD_CUST
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# define ASYNC_SPD_CUST (ASYNC_SPD_HI|ASYNC_SPD_VHI)
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#endif
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#ifndef ASYNC_SPD_WARP
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# define ASYNC_SPD_WARP (ASYNC_SPD_HI|ASYNC_SPD_SHI)
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#endif
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#ifndef ASYNC_SPD_MASK
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# define ASYNC_SPD_MASK (ASYNC_SPD_HI|ASYNC_SPD_VHI|ASYNC_SPD_SHI)
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#endif
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#ifndef ASYNC_CLOSING_WAIT_INF
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# define ASYNC_CLOSING_WAIT_INF 0
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#endif
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#ifndef ASYNC_CLOSING_WAIT_NONE
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# define ASYNC_CLOSING_WAIT_NONE 65535
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#endif
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#ifndef _LINUX_SERIAL_H
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struct serial_struct {
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int type;
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int line;
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unsigned int port;
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int irq;
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int flags;
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int xmit_fifo_size;
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int custom_divisor;
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int baud_base;
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unsigned short close_delay;
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char io_type;
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char reserved_char[1];
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int hub6;
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unsigned short closing_wait; /* time to wait before closing */
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unsigned short closing_wait2; /* no longer used... */
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unsigned char *iomem_base;
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unsigned short iomem_reg_shift;
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unsigned int port_high;
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unsigned long iomap_base; /* cookie passed into ioremap */
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};
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#endif
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//usage:#define setserial_trivial_usage
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//usage: "[-abGvz] { DEVICE [PARAMETER [ARG]]... | -g DEVICE... }"
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//usage:#define setserial_full_usage "\n\n"
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//usage: "Print or set serial port parameters"
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//usage: "\n"
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//usage: "\n"" -a Print all"
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//usage: "\n"" -b Print summary"
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//usage: "\n"" -G Print as setserial PARAMETERs"
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//usage: "\n"" -v Verbose"
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//usage: "\n"" -z Zero out serial flags before setting"
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//usage: "\n"" -g All args are device names"
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//usage: "\n"
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//usage: "\n""PARAMETERs: (* = takes ARG, ^ = can be turned off by preceding ^)"
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//usage: "\n"" *port, *irq, *divisor, *uart, *baud_base, *close_delay, *closing_wait,"
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//usage: "\n"" ^fourport, ^auto_irq, ^skip_test, ^sak, ^session_lockout, ^pgrp_lockout,"
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//usage: "\n"" ^callout_nohup, ^split_termios, ^hup_notify, ^low_latency, autoconfig,"
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//usage: "\n"" spd_normal, spd_hi, spd_vhi, spd_shi, spd_warp, spd_cust"
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//usage: "\n""ARG for uart:"
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//usage: "\n"" unknown, 8250, 16450, 16550, 16550A, Cirrus, 16650, 16650V2, 16750,"
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//usage: "\n"" 16950, 16954, 16654, 16850, RSA, NS16550A, XSCALE, RM9000, OCTEON, AR7,"
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//usage: "\n"" U6_16550A"
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// option string is "bGavzgq". "q" is accepted but ignored.
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#define OPT_PRINT_SUMMARY (1 << 0)
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#define OPT_PRINT_FEDBACK (1 << 1)
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#define OPT_PRINT_ALL (1 << 2)
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#define OPT_VERBOSE (1 << 3)
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#define OPT_ZERO (1 << 4)
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#define OPT_LIST_OF_DEVS (1 << 5)
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/*#define OPT_QUIET (1 << 6)*/
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#define OPT_MODE_MASK \
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(OPT_PRINT_ALL | OPT_PRINT_SUMMARY | OPT_PRINT_FEDBACK)
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enum print_mode
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{
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PRINT_NORMAL = 0,
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PRINT_SUMMARY = (1 << 0),
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PRINT_FEDBACK = (1 << 1),
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PRINT_ALL = (1 << 2),
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};
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#define CTL_SET (1 << 0)
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#define CTL_CONFIG (1 << 1)
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#define CTL_GET (1 << 2)
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#define CTL_CLOSE (1 << 3)
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#define CTL_NODIE (1 << 4)
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static const char serial_types[] ALIGN1 =
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"unknown\0" /* 0 */
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"8250\0" /* 1 */
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"16450\0" /* 2 */
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"16550\0" /* 3 */
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"16550A\0" /* 4 */
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"Cirrus\0" /* 5 */
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"16650\0" /* 6 */
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"16650V2\0" /* 7 */
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"16750\0" /* 8 */
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"16950\0" /* 9 UNIMPLEMENTED: also know as "16950/954" */
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"16954\0" /* 10 */
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"16654\0" /* 11 */
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"16850\0" /* 12 */
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"RSA\0" /* 13 */
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#ifndef SETSERIAL_BASE
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"NS16550A\0" /* 14 */
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"XSCALE\0" /* 15 */
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"RM9000\0" /* 16 */
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"OCTEON\0" /* 17 */
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"AR7\0" /* 18 */
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"U6_16550A\0" /* 19 */
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#endif
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;
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#ifndef SETSERIAL_BASE
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# define MAX_SERIAL_TYPE 19
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#else
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# define MAX_SERIAL_TYPE 13
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#endif
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static const char commands[] ALIGN1 =
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"spd_normal\0"
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"spd_hi\0"
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"spd_vhi\0"
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"spd_shi\0"
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"spd_warp\0"
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"spd_cust\0"
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"sak\0"
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"fourport\0"
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"hup_notify\0"
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"skip_test\0"
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"auto_irq\0"
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"split_termios\0"
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"session_lockout\0"
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"pgrp_lockout\0"
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"callout_nohup\0"
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"low_latency\0"
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"port\0"
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"irq\0"
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"divisor\0"
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"uart\0"
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"baud_base\0"
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"close_delay\0"
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"closing_wait\0"
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"autoconfig\0"
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;
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enum
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{
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CMD_SPD_NORMAL = 0,
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CMD_SPD_HI,
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CMD_SPD_VHI,
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CMD_SPD_SHI,
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CMD_SPD_WARP,
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CMD_SPD_CUST,
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CMD_FLAG_SAK,
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CMD_FLAG_FOURPORT,
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CMD_FLAG_NUP_NOTIFY,
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CMD_FLAG_SKIP_TEST,
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CMD_FLAG_AUTO_IRQ,
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CMD_FLAG_SPLIT_TERMIOS,
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CMD_FLAG_SESSION_LOCKOUT,
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CMD_FLAG_PGRP_LOCKOUT,
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CMD_FLAG_CALLOUT_NOHUP,
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CMD_FLAG_LOW_LATENCY,
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CMD_PORT,
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CMD_IRQ,
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CMD_DIVISOR,
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CMD_UART,
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CMD_BASE,
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CMD_DELAY,
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CMD_WAIT,
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CMD_AUTOCONFIG,
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CMD_FLAG_FIRST = CMD_FLAG_SAK,
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CMD_FLAG_LAST = CMD_FLAG_LOW_LATENCY,
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};
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static bool cmd_noprint(int cmd)
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{
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return (cmd >= CMD_FLAG_SKIP_TEST && cmd <= CMD_FLAG_CALLOUT_NOHUP);
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}
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static bool cmd_is_flag(int cmd)
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{
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return (cmd >= CMD_FLAG_FIRST && cmd <= CMD_FLAG_LAST);
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}
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static bool cmd_needs_arg(int cmd)
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{
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return (cmd >= CMD_PORT && cmd <= CMD_WAIT);
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}
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#define ALL_SPD ( \
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ASYNC_SPD_HI | ASYNC_SPD_VHI | ASYNC_SPD_SHI | \
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ASYNC_SPD_WARP | ASYNC_SPD_CUST \
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)
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#define ALL_FLAGS ( \
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ASYNC_SAK | ASYNC_FOURPORT | ASYNC_HUP_NOTIFY | \
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ASYNC_SKIP_TEST | ASYNC_AUTO_IRQ | ASYNC_SPLIT_TERMIOS | \
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ASYNC_SESSION_LOCKOUT | ASYNC_PGRP_LOCKOUT | ASYNC_CALLOUT_NOHUP | \
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ASYNC_LOW_LATENCY \
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)
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#if (ALL_SPD | ALL_FLAGS) > 0xffff
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# error "Unexpected flags size"
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#endif
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static const uint16_t setbits[CMD_FLAG_LAST + 1] =
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{
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0,
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ASYNC_SPD_HI,
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ASYNC_SPD_VHI,
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ASYNC_SPD_SHI,
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ASYNC_SPD_WARP,
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ASYNC_SPD_CUST,
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ASYNC_SAK,
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ASYNC_FOURPORT,
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ASYNC_HUP_NOTIFY,
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ASYNC_SKIP_TEST,
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ASYNC_AUTO_IRQ,
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ASYNC_SPLIT_TERMIOS,
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ASYNC_SESSION_LOCKOUT,
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ASYNC_PGRP_LOCKOUT,
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ASYNC_CALLOUT_NOHUP,
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ASYNC_LOW_LATENCY
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};
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#define STR_INFINITE "infinite"
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#define STR_NONE "none"
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static const char *uart_type(int type)
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{
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if (type > MAX_SERIAL_TYPE)
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return "undefined";
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return nth_string(serial_types, type);
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}
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/* libbb candidate */
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static int index_in_strings_case_insensitive(const char *strings, const char *key)
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{
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int idx = 0;
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while (*strings) {
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if (strcasecmp(strings, key) == 0) {
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return idx;
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}
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strings += strlen(strings) + 1; /* skip NUL */
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idx++;
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}
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return -1;
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}
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static int uart_id(const char *name)
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{
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return index_in_strings_case_insensitive(serial_types, name);
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}
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static const char *get_spd(int flags, enum print_mode mode)
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{
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int idx;
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switch (flags & ASYNC_SPD_MASK) {
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case ASYNC_SPD_HI:
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idx = CMD_SPD_HI;
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break;
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case ASYNC_SPD_VHI:
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idx = CMD_SPD_VHI;
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break;
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case ASYNC_SPD_SHI:
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idx = CMD_SPD_SHI;
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break;
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case ASYNC_SPD_WARP:
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idx = CMD_SPD_WARP;
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break;
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case ASYNC_SPD_CUST:
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idx = CMD_SPD_CUST;
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break;
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default:
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if (mode < PRINT_FEDBACK)
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return NULL;
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idx = CMD_SPD_NORMAL;
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}
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return nth_string(commands, idx);
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}
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static int get_numeric(const char *arg)
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{
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return bb_strtol(arg, NULL, 0);
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}
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static int get_wait(const char *arg)
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{
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if (strcasecmp(arg, STR_NONE) == 0)
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return ASYNC_CLOSING_WAIT_NONE;
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if (strcasecmp(arg, STR_INFINITE) == 0)
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return ASYNC_CLOSING_WAIT_INF;
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return get_numeric(arg);
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}
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static int get_uart(const char *arg)
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{
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int uart = uart_id(arg);
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if (uart < 0)
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bb_error_msg_and_die("illegal UART type: %s", arg);
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return uart;
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}
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static int serial_open(const char *dev, bool quiet)
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{
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int fd;
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fd = device_open(dev, O_RDWR | O_NONBLOCK);
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if (fd < 0 && !quiet)
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bb_simple_perror_msg(dev);
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return fd;
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}
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static int serial_ctl(int fd, int ops, struct serial_struct *serinfo)
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{
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int ret = 0;
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const char *err;
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if (ops & CTL_SET) {
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ret = ioctl(fd, TIOCSSERIAL, serinfo);
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if (ret < 0) {
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|
err = "can't set serial info";
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (ops & CTL_CONFIG) {
|
|
ret = ioctl(fd, TIOCSERCONFIG);
|
|
if (ret < 0) {
|
|
err = "can't autoconfigure port";
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
if (ops & CTL_GET) {
|
|
ret = ioctl(fd, TIOCGSERIAL, serinfo);
|
|
if (ret < 0) {
|
|
err = "can't get serial info";
|
|
goto fail;
|
|
}
|
|
}
|
|
nodie:
|
|
if (ops & CTL_CLOSE)
|
|
close(fd);
|
|
|
|
return ret;
|
|
fail:
|
|
bb_simple_perror_msg(err);
|
|
if (ops & CTL_NODIE)
|
|
goto nodie;
|
|
exit(EXIT_FAILURE);
|
|
}
|
|
|
|
static void print_flag(const char **prefix, const char *flag)
|
|
{
|
|
printf("%s%s", *prefix, flag);
|
|
*prefix = " ";
|
|
}
|
|
|
|
static void print_serial_flags(int serial_flags, enum print_mode mode,
|
|
const char *prefix, const char *postfix)
|
|
{
|
|
int i;
|
|
const char *spd, *pr;
|
|
|
|
pr = prefix;
|
|
|
|
spd = get_spd(serial_flags, mode);
|
|
if (spd)
|
|
print_flag(&pr, spd);
|
|
|
|
for (i = CMD_FLAG_FIRST; i <= CMD_FLAG_LAST; i++) {
|
|
if ((serial_flags & setbits[i])
|
|
&& (mode > PRINT_SUMMARY || !cmd_noprint(i))
|
|
) {
|
|
print_flag(&pr, nth_string(commands, i));
|
|
}
|
|
}
|
|
|
|
puts(pr == prefix ? "" : postfix);
|
|
}
|
|
|
|
static void print_closing_wait(unsigned int closing_wait)
|
|
{
|
|
switch (closing_wait) {
|
|
case ASYNC_CLOSING_WAIT_NONE:
|
|
puts(STR_NONE);
|
|
break;
|
|
case ASYNC_CLOSING_WAIT_INF:
|
|
puts(STR_INFINITE);
|
|
break;
|
|
default:
|
|
printf("%u\n", closing_wait);
|
|
}
|
|
}
|
|
|
|
static void serial_get(const char *device, enum print_mode mode)
|
|
{
|
|
int fd, ret;
|
|
const char *uart, *prefix, *postfix;
|
|
struct serial_struct serinfo;
|
|
|
|
fd = serial_open(device, /*quiet:*/ mode == PRINT_SUMMARY);
|
|
if (fd < 0)
|
|
return;
|
|
|
|
ret = serial_ctl(fd, CTL_GET | CTL_CLOSE | CTL_NODIE, &serinfo);
|
|
if (ret < 0)
|
|
return;
|
|
|
|
uart = uart_type(serinfo.type);
|
|
prefix = ", Flags: ";
|
|
postfix = "";
|
|
|
|
switch (mode) {
|
|
case PRINT_NORMAL:
|
|
printf("%s, UART: %s, Port: 0x%.4x, IRQ: %d",
|
|
device, uart, serinfo.port, serinfo.irq);
|
|
break;
|
|
case PRINT_SUMMARY:
|
|
if (!serinfo.type)
|
|
return;
|
|
printf("%s at 0x%.4x (irq = %d) is a %s",
|
|
device, serinfo.port, serinfo.irq, uart);
|
|
prefix = " (";
|
|
postfix = ")";
|
|
break;
|
|
case PRINT_FEDBACK:
|
|
printf("%s uart %s port 0x%.4x irq %d baud_base %d", device,
|
|
uart, serinfo.port, serinfo.irq, serinfo.baud_base);
|
|
prefix = " ";
|
|
break;
|
|
case PRINT_ALL:
|
|
printf("%s, Line %d, UART: %s, Port: 0x%.4x, IRQ: %d\n",
|
|
device, serinfo.line, uart, serinfo.port, serinfo.irq);
|
|
printf("\tBaud_base: %d, close_delay: %u, divisor: %d\n",
|
|
serinfo.baud_base, serinfo.close_delay,
|
|
serinfo.custom_divisor);
|
|
printf("\tclosing_wait: ");
|
|
print_closing_wait(serinfo.closing_wait);
|
|
prefix = "\tFlags: ";
|
|
postfix = "\n";
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
|
|
print_serial_flags(serinfo.flags, mode, prefix, postfix);
|
|
}
|
|
|
|
static int find_cmd(const char *cmd)
|
|
{
|
|
int idx;
|
|
|
|
idx = index_in_strings_case_insensitive(commands, cmd);
|
|
if (idx < 0)
|
|
bb_error_msg_and_die("invalid flag: %s", cmd);
|
|
|
|
return idx;
|
|
}
|
|
|
|
static void serial_set(char **arg, int opts)
|
|
{
|
|
struct serial_struct serinfo;
|
|
int fd;
|
|
|
|
fd = serial_open(*arg, /*quiet:*/ false);
|
|
if (fd < 0)
|
|
exit(201);
|
|
|
|
serial_ctl(fd, CTL_GET, &serinfo);
|
|
|
|
if (opts & OPT_ZERO)
|
|
serinfo.flags = 0;
|
|
|
|
while (*++arg) {
|
|
const char *word;
|
|
int invert;
|
|
int cmd;
|
|
|
|
word = *arg;
|
|
invert = (word[0] == '^');
|
|
word += invert;
|
|
|
|
cmd = find_cmd(word);
|
|
|
|
if (cmd_needs_arg(cmd))
|
|
if (*++arg == NULL)
|
|
bb_error_msg_and_die(bb_msg_requires_arg, word);
|
|
|
|
if (invert && !cmd_is_flag(cmd))
|
|
bb_error_msg_and_die("can't invert %s", word);
|
|
|
|
switch (cmd) {
|
|
case CMD_SPD_NORMAL:
|
|
case CMD_SPD_HI:
|
|
case CMD_SPD_VHI:
|
|
case CMD_SPD_SHI:
|
|
case CMD_SPD_WARP:
|
|
case CMD_SPD_CUST:
|
|
serinfo.flags &= ~ASYNC_SPD_MASK;
|
|
/* fallthrough */
|
|
case CMD_FLAG_SAK:
|
|
case CMD_FLAG_FOURPORT:
|
|
case CMD_FLAG_NUP_NOTIFY:
|
|
case CMD_FLAG_SKIP_TEST:
|
|
case CMD_FLAG_AUTO_IRQ:
|
|
case CMD_FLAG_SPLIT_TERMIOS:
|
|
case CMD_FLAG_SESSION_LOCKOUT:
|
|
case CMD_FLAG_PGRP_LOCKOUT:
|
|
case CMD_FLAG_CALLOUT_NOHUP:
|
|
case CMD_FLAG_LOW_LATENCY:
|
|
if (invert)
|
|
serinfo.flags &= ~setbits[cmd];
|
|
else
|
|
serinfo.flags |= setbits[cmd];
|
|
break;
|
|
case CMD_PORT:
|
|
serinfo.port = get_numeric(*arg);
|
|
break;
|
|
case CMD_IRQ:
|
|
serinfo.irq = get_numeric(*arg);
|
|
break;
|
|
case CMD_DIVISOR:
|
|
serinfo.custom_divisor = get_numeric(*arg);
|
|
break;
|
|
case CMD_UART:
|
|
serinfo.type = get_uart(*arg);
|
|
break;
|
|
case CMD_BASE:
|
|
serinfo.baud_base = get_numeric(*arg);
|
|
break;
|
|
case CMD_DELAY:
|
|
serinfo.close_delay = get_numeric(*arg);
|
|
break;
|
|
case CMD_WAIT:
|
|
serinfo.closing_wait = get_wait(*arg);
|
|
break;
|
|
case CMD_AUTOCONFIG:
|
|
serial_ctl(fd, CTL_SET | CTL_CONFIG | CTL_GET, &serinfo);
|
|
break;
|
|
default:
|
|
assert(0);
|
|
}
|
|
}
|
|
|
|
serial_ctl(fd, CTL_SET | CTL_CLOSE, &serinfo);
|
|
}
|
|
|
|
int setserial_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
|
|
int setserial_main(int argc UNUSED_PARAM, char **argv)
|
|
{
|
|
int opts;
|
|
|
|
opt_complementary = "-1:b-aG:G-ab:a-bG";
|
|
opts = getopt32(argv, "bGavzgq");
|
|
argv += optind;
|
|
|
|
if (!argv[1]) /* one arg only? (nothing to change?) */
|
|
opts |= OPT_LIST_OF_DEVS; /* force display */
|
|
|
|
if (!(opts & OPT_LIST_OF_DEVS)) {
|
|
serial_set(argv, opts);
|
|
argv[1] = NULL;
|
|
}
|
|
|
|
/* -v effect: "after setting params, do not be silent, show them" */
|
|
if (opts & (OPT_VERBOSE | OPT_LIST_OF_DEVS)) {
|
|
do {
|
|
serial_get(*argv, opts & OPT_MODE_MASK);
|
|
} while (*++argv);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|