diff options
Diffstat (limited to 'usr.sbin/ppp/tty.c')
| -rw-r--r-- | usr.sbin/ppp/tty.c | 770 |
1 files changed, 0 insertions, 770 deletions
diff --git a/usr.sbin/ppp/tty.c b/usr.sbin/ppp/tty.c deleted file mode 100644 index ab984cc..0000000 --- a/usr.sbin/ppp/tty.c +++ /dev/null @@ -1,770 +0,0 @@ -/*- - * Copyright (c) 1999 Brian Somers <brian@Awfulhak.org> - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -#include <sys/param.h> -#include <sys/un.h> -#if defined(__OpenBSD__) || defined(__NetBSD__) -#include <sys/ioctl.h> -#endif - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sysexits.h> -#include <sys/uio.h> -#include <termios.h> -#include <ttyent.h> -#include <unistd.h> -#ifndef NONETGRAPH -#include <netgraph.h> -#include <netgraph/ng_async.h> -#include <netgraph/ng_message.h> -#include <netgraph/ng_ppp.h> -#include <netgraph/ng_tty.h> -#endif - -#include "layer.h" -#include "defs.h" -#include "mbuf.h" -#include "log.h" -#include "timer.h" -#include "lqr.h" -#include "hdlc.h" -#include "throughput.h" -#include "fsm.h" -#include "lcp.h" -#include "ccp.h" -#include "link.h" -#include "async.h" -#include "descriptor.h" -#include "physical.h" -#include "mp.h" -#include "chat.h" -#include "auth.h" -#include "chap.h" -#include "cbcp.h" -#include "datalink.h" -#include "main.h" -#include "id.h" -#include "tty.h" - -#if defined(__mac68k__) || defined(__macppc__) -#undef CRTS_IFLOW -#undef CCTS_OFLOW -#define CRTS_IFLOW CDTRCTS -#define CCTS_OFLOW CDTRCTS -#endif - -#define Online(dev) ((dev)->mbits & TIOCM_CD) - -struct ttydevice { - struct device dev; /* What struct physical knows about */ - struct pppTimer Timer; /* CD checks */ - int mbits; /* Current DCD status */ - int carrier_seconds; /* seconds before CD is *required* */ -#ifndef NONETGRAPH - struct { - unsigned speed; /* Pre-line-discipline speed */ - int fd; /* Pre-line-discipline fd */ - int disc; /* Old line-discipline */ - } real; - char hook[sizeof NG_ASYNC_HOOK_SYNC]; /* our ng_socket hook */ - int cs; /* A netgraph control socket (maybe) */ -#endif - struct termios ios; /* To be able to reset from raw mode */ -}; - -#define device2tty(d) ((d)->type == TTY_DEVICE ? (struct ttydevice *)d : NULL) - -unsigned -tty_DeviceSize(void) -{ - return sizeof(struct ttydevice); -} - -/* - * tty_Timeout() watches the DCD signal and mentions it if it's status - * changes. - */ -static void -tty_Timeout(void *data) -{ - struct physical *p = data; - struct ttydevice *dev = device2tty(p->handler); - int ombits, change; - - timer_Stop(&dev->Timer); - dev->Timer.load = SECTICKS; /* Once a second please */ - timer_Start(&dev->Timer); - ombits = dev->mbits; - - if (p->fd >= 0) { - if (ioctl(p->fd, TIOCMGET, &dev->mbits) < 0) { - /* we must be a pty ? */ - if (p->cfg.cd.necessity != CD_DEFAULT) - log_Printf(LogWARN, "%s: Carrier ioctl not supported, " - "using ``set cd off''\n", p->link.name); - timer_Stop(&dev->Timer); - dev->mbits = TIOCM_CD; - return; - } - } else - dev->mbits = 0; - - if (ombits == -1) { - /* First time looking for carrier */ - if (Online(dev)) - log_Printf(LogPHASE, "%s: %s: CD detected\n", p->link.name, p->name.full); - else if (++dev->carrier_seconds >= dev->dev.cd.delay) { - if (dev->dev.cd.necessity == CD_REQUIRED) - log_Printf(LogPHASE, "%s: %s: Required CD not detected\n", - p->link.name, p->name.full); - else { - log_Printf(LogPHASE, "%s: %s doesn't support CD\n", - p->link.name, p->name.full); - dev->mbits = TIOCM_CD; /* Dodgy null-modem cable ? */ - } - timer_Stop(&dev->Timer); - /* tty_AwaitCarrier() will notice */ - } else { - /* Keep waiting */ - log_Printf(LogDEBUG, "%s: %s: Still no carrier (%d/%d)\n", - p->link.name, p->name.full, dev->carrier_seconds, - dev->dev.cd.delay); - dev->mbits = -1; - } - } else { - change = ombits ^ dev->mbits; - if (change & TIOCM_CD) { - if (dev->mbits & TIOCM_CD) - log_Printf(LogDEBUG, "%s: offline -> online\n", p->link.name); - else { - log_Printf(LogDEBUG, "%s: online -> offline\n", p->link.name); - log_Printf(LogPHASE, "%s: Carrier lost\n", p->link.name); - datalink_Down(p->dl, CLOSE_NORMAL); - timer_Stop(&dev->Timer); - } - } else - log_Printf(LogDEBUG, "%s: Still %sline\n", p->link.name, - Online(dev) ? "on" : "off"); - } -} - -static void -tty_StartTimer(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - timer_Stop(&dev->Timer); - dev->Timer.load = SECTICKS; - dev->Timer.func = tty_Timeout; - dev->Timer.name = "tty CD"; - dev->Timer.arg = p; - log_Printf(LogDEBUG, "%s: Using tty_Timeout [%p]\n", - p->link.name, tty_Timeout); - timer_Start(&dev->Timer); -} - -static int -tty_AwaitCarrier(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - if (dev->dev.cd.necessity == CD_NOTREQUIRED || physical_IsSync(p)) - return CARRIER_OK; - - if (dev->mbits == -1) { - if (dev->Timer.state == TIMER_STOPPED) { - dev->carrier_seconds = 0; - tty_StartTimer(p); - } - return CARRIER_PENDING; /* Not yet ! */ - } - - return Online(dev) ? CARRIER_OK : CARRIER_LOST; -} - -#ifdef NONETGRAPH -#define tty_SetAsyncParams NULL -#define tty_Write NULL -#define tty_Read NULL -#else - -static int -isngtty(struct ttydevice *dev) -{ - return dev->real.fd != -1; -} - -static void -tty_SetAsyncParams(struct physical *p, u_int32_t mymap, u_int32_t hismap) -{ - struct ttydevice *dev = device2tty(p->handler); - char asyncpath[NG_PATHSIZ]; - struct ng_async_cfg cfg; - - if (isngtty(dev)) { - /* Configure the async converter node */ - - snprintf(asyncpath, sizeof asyncpath, ".:%s", dev->hook); - memset(&cfg, 0, sizeof cfg); - cfg.enabled = 1; - cfg.accm = mymap | hismap; - cfg.amru = MAX_MTU; - cfg.smru = MAX_MRU; - log_Printf(LogDEBUG, "Configure async node at %s\n", asyncpath); - if (NgSendMsg(dev->cs, asyncpath, NGM_ASYNC_COOKIE, - NGM_ASYNC_CMD_SET_CONFIG, &cfg, sizeof cfg) < 0) - log_Printf(LogWARN, "%s: Can't configure async node at %s\n", - p->link.name, asyncpath); - } else - /* No netgraph node, just config the async layer */ - async_SetLinkParams(&p->async, mymap, hismap); -} - -static int -LoadLineDiscipline(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - u_char rbuf[sizeof(struct ng_mesg) + sizeof(struct nodeinfo)]; - struct ng_mesg *reply; - struct nodeinfo *info; - char ttypath[NG_NODESIZ]; - struct ngm_mkpeer ngm; - struct ngm_connect ngc; - int ldisc, cs, ds, hot; - unsigned speed; - - /* - * Don't use the netgraph line discipline for now. Using it works, but - * carrier cannot be detected via TIOCMGET and the device doesn't become - * selectable with 0 bytes to read when carrier is lost :( - */ - return 0; - - reply = (struct ng_mesg *)rbuf; - info = (struct nodeinfo *)reply->data; - - loadmodules(LOAD_VERBOSLY, "netgraph", "ng_tty", "ng_async", "ng_socket", - NULL); - - /* Get the speed before loading the line discipline */ - speed = physical_GetSpeed(p); - - if (ioctl(p->fd, TIOCGETD, &dev->real.disc) < 0) { - log_Printf(LogDEBUG, "%s: Couldn't get tty line discipline\n", - p->link.name); - return 0; - } - ldisc = NETGRAPHDISC; - if (ID0ioctl(p->fd, TIOCSETD, &ldisc) < 0) { - log_Printf(LogDEBUG, "%s: Couldn't set NETGRAPHDISC line discipline\n", - p->link.name); - return 0; - } - - /* Get the name of the tty node */ - if (ioctl(p->fd, NGIOCGINFO, info) < 0) { - log_Printf(LogWARN, "%s: ioctl(NGIOCGINFO): %s\n", p->link.name, - strerror(errno)); - ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); - return 0; - } - snprintf(ttypath, sizeof ttypath, "%s:", info->name); - - /* Create a socket node for our endpoint (and to send messages via) */ - if (ID0NgMkSockNode(NULL, &cs, &ds) == -1) { - log_Printf(LogWARN, "%s: NgMkSockNode: %s\n", p->link.name, - strerror(errno)); - ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); - return 0; - } - - /* Set the ``hot char'' on the TTY node */ - hot = HDLC_SYN; - log_Printf(LogDEBUG, "%s: Set tty hotchar to 0x%02x\n", p->link.name, hot); - if (NgSendMsg(cs, ttypath, NGM_TTY_COOKIE, - NGM_TTY_SET_HOTCHAR, &hot, sizeof hot) < 0) { - log_Printf(LogWARN, "%s: Can't set hot char\n", p->link.name); - goto failed; - } - - /* Attach an async converter node */ - snprintf(ngm.type, sizeof ngm.type, "%s", NG_ASYNC_NODE_TYPE); - snprintf(ngm.ourhook, sizeof ngm.ourhook, "%s", NG_TTY_HOOK); - snprintf(ngm.peerhook, sizeof ngm.peerhook, "%s", NG_ASYNC_HOOK_ASYNC); - log_Printf(LogDEBUG, "%s: Send mkpeer async:%s to %s:%s\n", p->link.name, - ngm.peerhook, ttypath, ngm.ourhook); - if (NgSendMsg(cs, ttypath, NGM_GENERIC_COOKIE, - NGM_MKPEER, &ngm, sizeof ngm) < 0) { - log_Printf(LogWARN, "%s: Can't create %s node\n", p->link.name, - NG_ASYNC_NODE_TYPE); - goto failed; - } - - /* Connect the async node to our socket */ - snprintf(ngc.path, sizeof ngc.path, "%s%s", ttypath, NG_TTY_HOOK); - snprintf(ngc.peerhook, sizeof ngc.peerhook, "%s", NG_ASYNC_HOOK_SYNC); - memcpy(ngc.ourhook, ngc.peerhook, sizeof ngc.ourhook); - log_Printf(LogDEBUG, "%s: Send connect %s:%s to .:%s\n", p->link.name, - ngc.path, ngc.peerhook, ngc.ourhook); - if (NgSendMsg(cs, ".:", NGM_GENERIC_COOKIE, NGM_CONNECT, - &ngc, sizeof ngc) < 0) { - log_Printf(LogWARN, "%s: Can't connect .:%s -> %s.%s: %s\n", - p->link.name, ngc.ourhook, ngc.path, ngc.peerhook, - strerror(errno)); - goto failed; - } - - /* Get the async node id */ - if (NgSendMsg(cs, ngc.path, NGM_GENERIC_COOKIE, NGM_NODEINFO, NULL, 0) < 0) { - log_Printf(LogWARN, "%s: Can't request async node info at %s: %s\n", - p->link.name, ngc.path, strerror(errno)); - goto failed; - } - if (NgRecvMsg(cs, reply, sizeof rbuf, NULL) < 0) { - log_Printf(LogWARN, "%s: Can't obtain async node info at %s: %s\n", - p->link.name, ngc.path, strerror(errno)); - goto failed; - } - - /* All done, set up our device state */ - snprintf(dev->hook, sizeof dev->hook, "%s", ngc.ourhook); - dev->cs = cs; - dev->real.fd = p->fd; - p->fd = ds; - dev->real.speed = speed; - physical_SetSync(p); - - tty_SetAsyncParams(p, 0xffffffff, 0xffffffff); - physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); - log_Printf(LogPHASE, "%s: Loaded netgraph tty line discipline\n", - p->link.name); - - return 1; - -failed: - ID0ioctl(p->fd, TIOCSETD, &dev->real.disc); - close(ds); - close(cs); - - return 0; -} - -static void -UnloadLineDiscipline(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - if (isngtty(dev)) { - if (!physical_SetSpeed(p, dev->real.speed)) - log_Printf(LogWARN, "Couldn't reset tty speed to %d\n", dev->real.speed); - dev->real.speed = 0; - close(p->fd); - p->fd = dev->real.fd; - dev->real.fd = -1; - close(dev->cs); - dev->cs = -1; - *dev->hook = '\0'; - if (ID0ioctl(p->fd, TIOCSETD, &dev->real.disc) == 0) { - physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); - log_Printf(LogPHASE, "%s: Unloaded netgraph tty line discipline\n", - p->link.name); - } else - log_Printf(LogWARN, "%s: Failed to unload netgraph tty line discipline\n", - p->link.name); - } -} - -static ssize_t -tty_Write(struct physical *p, const void *v, size_t n) -{ - struct ttydevice *dev = device2tty(p->handler); - - if (isngtty(dev)) - return NgSendData(p->fd, dev->hook, v, n) == -1 ? -1 : (ssize_t)n; - else - return write(p->fd, v, n); -} - -static ssize_t -tty_Read(struct physical *p, void *v, size_t n) -{ - struct ttydevice *dev = device2tty(p->handler); - char hook[sizeof NG_ASYNC_HOOK_SYNC]; - - if (isngtty(dev)) - return NgRecvData(p->fd, v, n, hook); - else - return read(p->fd, v, n); -} - -#endif /* NETGRAPH */ - -static int -tty_Raw(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - struct termios ios; - int oldflag; - - log_Printf(LogDEBUG, "%s: Entering tty_Raw\n", p->link.name); - - if (p->type != PHYS_DIRECT && p->fd >= 0 && !Online(dev)) - log_Printf(LogDEBUG, "%s: Raw: descriptor = %d, mbits = %x\n", - p->link.name, p->fd, dev->mbits); - - if (!physical_IsSync(p)) { -#ifndef NONETGRAPH - if (!LoadLineDiscipline(p)) -#endif - { - tcgetattr(p->fd, &ios); - cfmakeraw(&ios); - if (p->cfg.rts_cts) - ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW; - else - ios.c_cflag |= CLOCAL; - - if (p->type != PHYS_DEDICATED) - ios.c_cflag |= HUPCL; - - if (tcsetattr(p->fd, TCSANOW, &ios) == -1) - log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n", - p->link.name); - } - } - - oldflag = fcntl(p->fd, F_GETFL, 0); - if (oldflag < 0) - return 0; - fcntl(p->fd, F_SETFL, oldflag | O_NONBLOCK); - - return 1; -} - -static void -tty_Offline(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - if (p->fd >= 0) { - timer_Stop(&dev->Timer); - dev->mbits &= ~TIOCM_DTR; /* XXX: Hmm, what's this supposed to do ? */ - if (Online(dev)) { - struct termios tio; - - tcgetattr(p->fd, &tio); - if (cfsetspeed(&tio, B0) == -1 || tcsetattr(p->fd, TCSANOW, &tio) == -1) - log_Printf(LogWARN, "%s: Unable to set physical to speed 0\n", - p->link.name); - } - } -} - -static void -tty_Cooked(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - int oldflag; - - tty_Offline(p); /* In case of emergency close()s */ - - tcflush(p->fd, TCIOFLUSH); - - if (!physical_IsSync(p) && tcsetattr(p->fd, TCSAFLUSH, &dev->ios) == -1) - log_Printf(LogWARN, "%s: tcsetattr: Unable to restore device settings\n", - p->link.name); - -#ifndef NONETGRAPH - UnloadLineDiscipline(p); -#endif - - if ((oldflag = fcntl(p->fd, F_GETFL, 0)) != -1) - fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK); -} - -static void -tty_StopTimer(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - timer_Stop(&dev->Timer); -} - -static void -tty_Free(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - - tty_Offline(p); /* In case of emergency close()s */ - free(dev); -} - -static unsigned -tty_Speed(struct physical *p) -{ - struct termios ios; - - if (tcgetattr(p->fd, &ios) == -1) - return 0; - - return SpeedToUnsigned(cfgetispeed(&ios)); -} - -static const char * -tty_OpenInfo(struct physical *p) -{ - struct ttydevice *dev = device2tty(p->handler); - static char buf[13]; - - if (Online(dev)) - strcpy(buf, "with"); - else - strcpy(buf, "no"); - strcat(buf, " carrier"); - - return buf; -} - -static int -tty_Slot(struct physical *p) -{ - struct ttyent *ttyp; - int slot; - - setttyent(); - for (slot = 1; (ttyp = getttyent()); ++slot) - if (!strcmp(ttyp->ty_name, p->name.base)) { - endttyent(); - return slot; - } - - endttyent(); - return -1; -} - -static void -tty_device2iov(struct device *d, struct iovec *iov, int *niov, - int maxiov __unused, -#ifndef NONETGRAPH - int *auxfd, int *nauxfd -#else - int *auxfd __unused, int *nauxfd __unused -#endif - ) -{ - struct ttydevice *dev; - int sz = physical_MaxDeviceSize(); - - iov[*niov].iov_base = d = realloc(d, sz); - if (d == NULL) { - log_Printf(LogALERT, "Failed to allocate memory: %d\n", sz); - AbortProgram(EX_OSERR); - } - iov[*niov].iov_len = sz; - (*niov)++; - - dev = device2tty(d); - -#ifndef NONETGRAPH - if (dev->cs >= 0) { - *auxfd = dev->cs; - (*nauxfd)++; - } -#endif - - if (dev->Timer.state != TIMER_STOPPED) { - timer_Stop(&dev->Timer); - dev->Timer.state = TIMER_RUNNING; - } -} - -static struct device basettydevice = { - TTY_DEVICE, - "tty", - 0, - { CD_VARIABLE, DEF_TTYCDDELAY }, - tty_AwaitCarrier, - NULL, - tty_Raw, - tty_Offline, - tty_Cooked, - tty_SetAsyncParams, - tty_StopTimer, - tty_Free, - tty_Read, - tty_Write, - tty_device2iov, - tty_Speed, - tty_OpenInfo, - tty_Slot -}; - -struct device * -tty_iov2device(int type, struct physical *p, struct iovec *iov, int *niov, - int maxiov __unused, -#ifndef NONETGRAPH - int *auxfd, int *nauxfd -#else - int *auxfd __unused, int *nauxfd __unused -#endif - ) -{ - if (type == TTY_DEVICE) { - struct ttydevice *dev = (struct ttydevice *)iov[(*niov)++].iov_base; - - dev = realloc(dev, sizeof *dev); /* Reduce to the correct size */ - if (dev == NULL) { - log_Printf(LogALERT, "Failed to allocate memory: %d\n", - (int)(sizeof *dev)); - AbortProgram(EX_OSERR); - } - -#ifndef NONETGRAPH - if (*nauxfd) { - dev->cs = *auxfd; - (*nauxfd)--; - } else - dev->cs = -1; -#endif - - /* Refresh function pointers etc */ - memcpy(&dev->dev, &basettydevice, sizeof dev->dev); - - physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); - if (dev->Timer.state != TIMER_STOPPED) { - dev->Timer.state = TIMER_STOPPED; - p->handler = &dev->dev; /* For the benefit of StartTimer */ - tty_StartTimer(p); - } - return &dev->dev; - } - - return NULL; -} - -struct device * -tty_Create(struct physical *p) -{ - struct ttydevice *dev; - struct termios ios; - int oldflag; - - if (p->fd < 0 || !isatty(p->fd)) - /* Don't want this */ - return NULL; - - if (*p->name.full == '\0') { - physical_SetDevice(p, ttyname(p->fd)); - log_Printf(LogDEBUG, "%s: Input is a tty (%s)\n", - p->link.name, p->name.full); - } else - log_Printf(LogDEBUG, "%s: Opened %s\n", p->link.name, p->name.full); - - /* We're gonna return a ttydevice (unless something goes horribly wrong) */ - - if ((dev = malloc(sizeof *dev)) == NULL) { - /* Complete failure - parent doesn't continue trying to ``create'' */ - close(p->fd); - p->fd = -1; - return NULL; - } - - memcpy(&dev->dev, &basettydevice, sizeof dev->dev); - memset(&dev->Timer, '\0', sizeof dev->Timer); - dev->mbits = -1; -#ifndef NONETGRAPH - dev->real.speed = 0; - dev->real.fd = -1; - dev->real.disc = -1; - *dev->hook = '\0'; -#endif - tcgetattr(p->fd, &ios); - dev->ios = ios; - - if (p->cfg.cd.necessity != CD_DEFAULT) - /* Any override is ok for the tty device */ - dev->dev.cd = p->cfg.cd; - - log_Printf(LogDEBUG, "%s: tty_Create: physical (get): fd = %d," - " iflag = %lx, oflag = %lx, cflag = %lx\n", p->link.name, p->fd, - (u_long)ios.c_iflag, (u_long)ios.c_oflag, (u_long)ios.c_cflag); - - cfmakeraw(&ios); - if (p->cfg.rts_cts) - ios.c_cflag |= CLOCAL | CCTS_OFLOW | CRTS_IFLOW; - else { - ios.c_cflag |= CLOCAL; - ios.c_iflag |= IXOFF; - } - ios.c_iflag |= IXON; - if (p->type != PHYS_DEDICATED) - ios.c_cflag |= HUPCL; - - if (p->type != PHYS_DIRECT) { - /* Change tty speed when we're not in -direct mode */ - ios.c_cflag &= ~(CSIZE | PARODD | PARENB); - ios.c_cflag |= p->cfg.parity; - if (cfsetspeed(&ios, UnsignedToSpeed(p->cfg.speed)) == -1) - log_Printf(LogWARN, "%s: %s: Unable to set speed to %d\n", - p->link.name, p->name.full, p->cfg.speed); - } - - if (tcsetattr(p->fd, TCSADRAIN, &ios) == -1) { - log_Printf(LogWARN, "%s: tcsetattr: Failed configuring device\n", - p->link.name); - if (p->type != PHYS_DIRECT && p->cfg.speed > 115200) - log_Printf(LogWARN, "%.*s Perhaps the speed is unsupported\n", - (int)strlen(p->link.name), ""); - } - - log_Printf(LogDEBUG, "%s: physical (put): iflag = %lx, oflag = %lx, " - "cflag = %lx\n", p->link.name, (u_long)ios.c_iflag, - (u_long)ios.c_oflag, (u_long)ios.c_cflag); - - oldflag = fcntl(p->fd, F_GETFL, 0); - if (oldflag < 0) { - /* Complete failure - parent doesn't continue trying to ``create'' */ - - log_Printf(LogWARN, "%s: Open: Cannot get physical flags: %s\n", - p->link.name, strerror(errno)); - tty_Cooked(p); - close(p->fd); - p->fd = -1; - free(dev); - return NULL; - } else - fcntl(p->fd, F_SETFL, oldflag & ~O_NONBLOCK); - - physical_SetupStack(p, dev->dev.name, PHYSICAL_NOFORCE); - - return &dev->dev; -} |
