diff options
Diffstat (limited to 'unix/tclUnixChan.c')
| -rw-r--r-- | unix/tclUnixChan.c | 2538 |
1 files changed, 1905 insertions, 633 deletions
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c index b05a9f2..7018e15 100644 --- a/unix/tclUnixChan.c +++ b/unix/tclUnixChan.c @@ -1,8 +1,8 @@ -/* +/* * tclUnixChan.c * - * Common channel driver for Unix channels based on files, command pipes - * and TCP sockets. + * Common channel driver for Unix channels based on files, command + * pipes and TCP sockets. * * Copyright (c) 1995-1997 Sun Microsystems, Inc. * Copyright (c) 1998-1999 by Scriptics Corporation. @@ -12,16 +12,35 @@ */ #include "tclInt.h" /* Internal definitions for Tcl. */ +#include "tclPort.h" /* Portability features for Tcl. */ #include "tclIO.h" /* To get Channel type declaration. */ -#define SUPPORTS_TTY +/* + * sys/ioctl.h has already been included by tclPort.h. Including termios.h + * or termio.h causes a bunch of warning messages because some duplicate + * (but not contradictory) #defines exist in termios.h and/or termio.h + */ +#undef NL0 +#undef NL1 +#undef CR0 +#undef CR1 +#undef CR2 +#undef CR3 +#undef TAB0 +#undef TAB1 +#undef TAB2 +#undef XTABS +#undef BS0 +#undef BS1 +#undef FF0 +#undef FF1 +#undef ECHO +#undef NOFLSH +#undef TOSTOP +#undef FLUSHO +#undef PENDIN -#undef DIRECT_BAUD -#ifdef B4800 -# if (B4800 == 4800) -# define DIRECT_BAUD -# endif /* B4800 == 4800 */ -#endif /* B4800 */ +#define SUPPORTS_TTY #ifdef USE_TERMIOS # include <termios.h> @@ -36,7 +55,22 @@ # define SETIOSTATE(fd, statePtr) tcsetattr((fd), TCSADRAIN, (statePtr)) # define GETCONTROL(fd, intPtr) ioctl((fd), TIOCMGET, (intPtr)) # define SETCONTROL(fd, intPtr) ioctl((fd), TIOCMSET, (intPtr)) - + /* + * TIP #35 introduced a different on exit flush/close behavior that + * doesn't work correctly with standard channels on all systems. + * The problem is tcflush throws away waiting channel data. This may + * be necessary for true serial channels that may block, but isn't + * correct in the standard case. This might be replaced with tcdrain + * instead, but that can block. For now, we revert to making this do + * nothing, and TtyOutputProc being the same old FileOutputProc. + * -- hobbs [Bug #525783] + */ +# define BAD_TIP35_FLUSH 0 +# if BAD_TIP35_FLUSH +# define TTYFLUSH(fd) tcflush((fd), TCIOFLUSH); +# else +# define TTYFLUSH(fd) +# endif /* BAD_TIP35_FLUSH */ # ifdef FIONREAD # define GETREADQUEUE(fd, int) ioctl((fd), FIONREAD, &(int)) # elif defined(FIORDCHK) @@ -46,12 +80,10 @@ # define GETWRITEQUEUE(fd, int) ioctl((fd), TIOCOUTQ, &(int)) # endif /* TIOCOUTQ */ # if defined(TIOCSBRK) && defined(TIOCCBRK) - /* - * Can't use ?: operator below because that messes up types on either Linux or - * Solaris (the two are mutually exclusive!) + * Can't use ?: operator below because that messes up types on either + * Linux or Solaris (the two are mutually exclusive!) */ - # define SETBREAK(fd, flag) \ if (flag) { \ ioctl((fd), TIOCSBRK, NULL); \ @@ -87,15 +119,6 @@ #endif /* !USE_TERMIOS */ /* - * Helper macros to make parts of this file clearer. The macros do exactly - * what they say on the tin. :-) They also only ever refer to their arguments - * once, and so can be used without regard to side effects. - */ - -#define SET_BITS(var, bits) ((var) |= (bits)) -#define CLEAR_BITS(var, bits) ((var) &= ~(bits)) - -/* * This structure describes per-instance state of a file based channel. */ @@ -105,6 +128,10 @@ typedef struct FileState { int validMask; /* OR'ed combination of TCL_READABLE, * TCL_WRITABLE, or TCL_EXCEPTION: indicates * which operations are valid on the file. */ +#ifdef DEPRECATED + struct FileState *nextPtr; /* Pointer to next file in list of all + * file channels. */ +#endif /* DEPRECATED */ } FileState; #ifdef SUPPORTS_TTY @@ -115,15 +142,17 @@ typedef struct FileState { */ typedef struct TtyState { - FileState fs; /* Per-instance state of the file descriptor. - * Must be the first field. */ - IOSTATE savedState; /* Initial state of device. Used to reset + FileState fs; /* Per-instance state of the file + * descriptor. Must be the first field. */ + int stateUpdated; /* Flag to say if the state has been + * modified and needs resetting. */ + IOSTATE savedState; /* Initial state of device. Used to reset * state when device closed. */ } TtyState; /* - * The following structure is used to set or get the serial port attributes in - * a platform-independant manner. + * The following structure is used to set or get the serial port + * attributes in a platform-independant manner. */ typedef struct TtyAttrs { @@ -136,59 +165,152 @@ typedef struct TtyAttrs { #endif /* !SUPPORTS_TTY */ #define UNSUPPORTED_OPTION(detail) \ - if (interp) { \ - Tcl_AppendResult(interp, (detail), \ - " not supported for this platform", NULL); \ - Tcl_SetErrorCode(interp, "TCL", "UNSUPPORTED", NULL); \ - } + if (interp) { \ + Tcl_AppendResult(interp, (detail), \ + " not supported for this platform", (char *) NULL); \ + } + +#ifdef DEPRECATED +typedef struct ThreadSpecificData { + /* + * List of all file channels currently open. This is per thread and is + * used to match up fd's to channels, which rarely occurs. + */ + + FileState *firstFilePtr; +} ThreadSpecificData; + +static Tcl_ThreadDataKey dataKey; +#endif /* DEPRECATED */ + +/* + * This structure describes per-instance state of a tcp based channel. + */ + +typedef struct TcpState { + Tcl_Channel channel; /* Channel associated with this file. */ + int fd; /* The socket itself. */ + int flags; /* ORed combination of the bitfields + * defined below. */ + Tcl_TcpAcceptProc *acceptProc; + /* Proc to call on accept. */ + ClientData acceptProcData; /* The data for the accept proc. */ +} TcpState; + +/* + * These bits may be ORed together into the "flags" field of a TcpState + * structure. + */ + +#define TCP_ASYNC_SOCKET (1<<0) /* Asynchronous socket. */ +#define TCP_ASYNC_CONNECT (1<<1) /* Async connect in progress. */ + +/* + * The following defines the maximum length of the listen queue. This is + * the number of outstanding yet-to-be-serviced requests for a connection + * on a server socket, more than this number of outstanding requests and + * the connection request will fail. + */ + +#ifndef SOMAXCONN +# define SOMAXCONN 100 +#endif /* SOMAXCONN */ + +#if (SOMAXCONN < 100) +# undef SOMAXCONN +# define SOMAXCONN 100 +#endif /* SOMAXCONN < 100 */ + +/* + * The following defines how much buffer space the kernel should maintain + * for a socket. + */ + +#define SOCKET_BUFSIZE 4096 /* * Static routines for this file: */ -static int FileBlockModeProc(ClientData instanceData, int mode); -static int FileCloseProc(ClientData instanceData, - Tcl_Interp *interp); -static int FileGetHandleProc(ClientData instanceData, - int direction, ClientData *handlePtr); -static int FileInputProc(ClientData instanceData, char *buf, - int toRead, int *errorCode); -static int FileOutputProc(ClientData instanceData, - const char *buf, int toWrite, int *errorCode); -static int FileSeekProc(ClientData instanceData, long offset, - int mode, int *errorCode); -static int FileTruncateProc(ClientData instanceData, - Tcl_WideInt length); -static Tcl_WideInt FileWideSeekProc(ClientData instanceData, - Tcl_WideInt offset, int mode, int *errorCode); -static void FileWatchProc(ClientData instanceData, int mask); +static TcpState * CreateSocket _ANSI_ARGS_((Tcl_Interp *interp, + int port, CONST char *host, int server, + CONST char *myaddr, int myport, int async)); +static int CreateSocketAddress _ANSI_ARGS_( + (struct sockaddr_in *sockaddrPtr, + CONST char *host, int port)); +static int FileBlockModeProc _ANSI_ARGS_(( + ClientData instanceData, int mode)); +static int FileCloseProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp)); +static int FileGetHandleProc _ANSI_ARGS_((ClientData instanceData, + int direction, ClientData *handlePtr)); +static int FileInputProc _ANSI_ARGS_((ClientData instanceData, + char *buf, int toRead, int *errorCode)); +static int FileOutputProc _ANSI_ARGS_(( + ClientData instanceData, CONST char *buf, + int toWrite, int *errorCode)); +static int FileSeekProc _ANSI_ARGS_((ClientData instanceData, + long offset, int mode, int *errorCode)); +#ifdef DEPRECATED +static void FileThreadActionProc _ANSI_ARGS_ (( + ClientData instanceData, int action)); +#endif +static Tcl_WideInt FileWideSeekProc _ANSI_ARGS_((ClientData instanceData, + Tcl_WideInt offset, int mode, int *errorCode)); +static void FileWatchProc _ANSI_ARGS_((ClientData instanceData, + int mask)); +static void TcpAccept _ANSI_ARGS_((ClientData data, int mask)); +static int TcpBlockModeProc _ANSI_ARGS_((ClientData data, + int mode)); +static int TcpCloseProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp)); +static int TcpGetHandleProc _ANSI_ARGS_((ClientData instanceData, + int direction, ClientData *handlePtr)); +static int TcpGetOptionProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp, CONST char *optionName, + Tcl_DString *dsPtr)); +static int TcpInputProc _ANSI_ARGS_((ClientData instanceData, + char *buf, int toRead, int *errorCode)); +static int TcpOutputProc _ANSI_ARGS_((ClientData instanceData, + CONST char *buf, int toWrite, int *errorCode)); +static void TcpWatchProc _ANSI_ARGS_((ClientData instanceData, + int mask)); #ifdef SUPPORTS_TTY -static void TtyGetAttributes(int fd, TtyAttrs *ttyPtr); -static int TtyGetOptionProc(ClientData instanceData, - Tcl_Interp *interp, const char *optionName, - Tcl_DString *dsPtr); -#ifndef DIRECT_BAUD -static int TtyGetBaud(unsigned long speed); -static unsigned long TtyGetSpeed(int baud); -#endif /* DIRECT_BAUD */ -static FileState * TtyInit(int fd, int initialize); -static void TtyModemStatusStr(int status, Tcl_DString *dsPtr); -static int TtyParseMode(Tcl_Interp *interp, const char *mode, - int *speedPtr, int *parityPtr, int *dataPtr, - int *stopPtr); -static void TtySetAttributes(int fd, TtyAttrs *ttyPtr); -static int TtySetOptionProc(ClientData instanceData, - Tcl_Interp *interp, const char *optionName, - const char *value); +static int TtyCloseProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp)); +static void TtyGetAttributes _ANSI_ARGS_((int fd, + TtyAttrs *ttyPtr)); +static int TtyGetOptionProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp, CONST char *optionName, + Tcl_DString *dsPtr)); +static FileState * TtyInit _ANSI_ARGS_((int fd, int initialize)); +#if BAD_TIP35_FLUSH +static int TtyOutputProc _ANSI_ARGS_((ClientData instanceData, + CONST char *buf, int toWrite, int *errorCode)); +#endif /* BAD_TIP35_FLUSH */ +static int TtyParseMode _ANSI_ARGS_((Tcl_Interp *interp, + CONST char *mode, int *speedPtr, int *parityPtr, + int *dataPtr, int *stopPtr)); +static void TtySetAttributes _ANSI_ARGS_((int fd, + TtyAttrs *ttyPtr)); +static int TtySetOptionProc _ANSI_ARGS_((ClientData instanceData, + Tcl_Interp *interp, CONST char *optionName, + CONST char *value)); #endif /* SUPPORTS_TTY */ +static int WaitForConnect _ANSI_ARGS_((TcpState *statePtr, + int *errorCodePtr)); +static Tcl_Channel MakeTcpClientChannelMode _ANSI_ARGS_( + (ClientData tcpSocket, + int mode)); + /* * This structure describes the channel type structure for file based IO: */ -static const Tcl_ChannelType fileChannelType = { +static Tcl_ChannelType fileChannelType = { "file", /* Type name. */ - TCL_CHANNEL_VERSION_5, /* v5 channel */ + TCL_CHANNEL_VERSION_4, /* v4 channel */ FileCloseProc, /* Close proc. */ FileInputProc, /* Input proc. */ FileOutputProc, /* Output proc. */ @@ -202,8 +324,11 @@ static const Tcl_ChannelType fileChannelType = { NULL, /* flush proc. */ NULL, /* handler proc. */ FileWideSeekProc, /* wide seek proc. */ +#ifdef DEPRECATED + FileThreadActionProc, /* thread actions */ +#else NULL, - FileTruncateProc /* truncate proc. */ +#endif }; #ifdef SUPPORTS_TTY @@ -212,12 +337,16 @@ static const Tcl_ChannelType fileChannelType = { * Note that this type is a subclass of the "file" type. */ -static const Tcl_ChannelType ttyChannelType = { +static Tcl_ChannelType ttyChannelType = { "tty", /* Type name. */ - TCL_CHANNEL_VERSION_5, /* v5 channel */ - FileCloseProc, /* Close proc. */ + TCL_CHANNEL_VERSION_4, /* v4 channel */ + TtyCloseProc, /* Close proc. */ FileInputProc, /* Input proc. */ +#if BAD_TIP35_FLUSH + TtyOutputProc, /* Output proc. */ +#else /* !BAD_TIP35_FLUSH */ FileOutputProc, /* Output proc. */ +#endif /* BAD_TIP35_FLUSH */ NULL, /* Seek proc. */ TtySetOptionProc, /* Set option proc. */ TtyGetOptionProc, /* Get option proc. */ @@ -229,17 +358,41 @@ static const Tcl_ChannelType ttyChannelType = { NULL, /* handler proc. */ NULL, /* wide seek proc. */ NULL, /* thread action proc. */ - NULL /* truncate proc. */ }; #endif /* SUPPORTS_TTY */ + +/* + * This structure describes the channel type structure for TCP socket + * based IO: + */ + +static Tcl_ChannelType tcpChannelType = { + "tcp", /* Type name. */ + TCL_CHANNEL_VERSION_4, /* v4 channel */ + TcpCloseProc, /* Close proc. */ + TcpInputProc, /* Input proc. */ + TcpOutputProc, /* Output proc. */ + NULL, /* Seek proc. */ + NULL, /* Set option proc. */ + TcpGetOptionProc, /* Get option proc. */ + TcpWatchProc, /* Initialize notifier. */ + TcpGetHandleProc, /* Get OS handles out of channel. */ + NULL, /* close2proc. */ + TcpBlockModeProc, /* Set blocking or non-blocking mode.*/ + NULL, /* flush proc. */ + NULL, /* handler proc. */ + NULL, /* wide seek proc. */ + NULL, /* thread action proc. */ +}; + /* *---------------------------------------------------------------------- * * FileBlockModeProc -- * - * Helper function to set blocking and nonblocking modes on a file based - * channel. Invoked by generic IO level code. + * Helper procedure to set blocking and nonblocking modes on a + * file based channel. Invoked by generic IO level code. * * Results: * 0 if successful, errno when failed. @@ -252,17 +405,36 @@ static const Tcl_ChannelType ttyChannelType = { /* ARGSUSED */ static int -FileBlockModeProc( - ClientData instanceData, /* File state. */ - int mode) /* The mode to set. Can be TCL_MODE_BLOCKING - * or TCL_MODE_NONBLOCKING. */ +FileBlockModeProc(instanceData, mode) + ClientData instanceData; /* File state. */ + int mode; /* The mode to set. Can be one of + * TCL_MODE_BLOCKING or + * TCL_MODE_NONBLOCKING. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; + int curStatus; - if (TclUnixSetBlockingMode(fsPtr->fd, mode) < 0) { +#ifndef USE_FIONBIO + curStatus = fcntl(fsPtr->fd, F_GETFL); + if (mode == TCL_MODE_BLOCKING) { + curStatus &= (~(O_NONBLOCK)); + } else { + curStatus |= O_NONBLOCK; + } + if (fcntl(fsPtr->fd, F_SETFL, curStatus) < 0) { return errno; } - + curStatus = fcntl(fsPtr->fd, F_GETFL); +#else /* USE_FIONBIO */ + if (mode == TCL_MODE_BLOCKING) { + curStatus = 0; + } else { + curStatus = 1; + } + if (ioctl(fsPtr->fd, (int) FIONBIO, &curStatus) < 0) { + return errno; + } +#endif /* !USE_FIONBIO */ return 0; } @@ -271,8 +443,8 @@ FileBlockModeProc( * * FileInputProc -- * - * This function is invoked from the generic IO level to read input from - * a file based channel. + * This procedure is invoked from the generic IO level to read + * input from a file based channel. * * Results: * The number of bytes read is returned or -1 on error. An output @@ -285,16 +457,16 @@ FileBlockModeProc( */ static int -FileInputProc( - ClientData instanceData, /* File state. */ - char *buf, /* Where to store data read. */ - int toRead, /* How much space is available in the - * buffer? */ - int *errorCodePtr) /* Where to store error code. */ +FileInputProc(instanceData, buf, toRead, errorCodePtr) + ClientData instanceData; /* File state. */ + char *buf; /* Where to store data read. */ + int toRead; /* How much space is available + * in the buffer? */ + int *errorCodePtr; /* Where to store error code. */ { - FileState *fsPtr = instanceData; - int bytesRead; /* How many bytes were actually read from the - * input device? */ + FileState *fsPtr = (FileState *) instanceData; + int bytesRead; /* How many bytes were actually + * read from the input device? */ *errorCodePtr = 0; @@ -318,12 +490,13 @@ FileInputProc( * * FileOutputProc-- * - * This function is invoked from the generic IO level to write output to - * a file channel. + * This procedure is invoked from the generic IO level to write + * output to a file channel. * * Results: - * The number of bytes written is returned or -1 on error. An output - * argument contains a POSIX error code if an error occurred, or zero. + * The number of bytes written is returned or -1 on error. An + * output argument contains a POSIX error code if an error occurred, + * or zero. * * Side effects: * Writes output on the output device of the channel. @@ -332,21 +505,22 @@ FileInputProc( */ static int -FileOutputProc( - ClientData instanceData, /* File state. */ - const char *buf, /* The data buffer. */ - int toWrite, /* How many bytes to write? */ - int *errorCodePtr) /* Where to store error code. */ +FileOutputProc(instanceData, buf, toWrite, errorCodePtr) + ClientData instanceData; /* File state. */ + CONST char *buf; /* The data buffer. */ + int toWrite; /* How many bytes to write? */ + int *errorCodePtr; /* Where to store error code. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; int written; *errorCodePtr = 0; if (toWrite == 0) { /* - * SF Tcl Bug 465765. Do not try to write nothing into a file. STREAM - * based implementations will considers this as EOF (if there is a + * SF Tcl Bug 465765. + * Do not try to write nothing into a file. STREAM based + * implementations will considers this as EOF (if there is a * pipe behind the file). */ @@ -365,7 +539,7 @@ FileOutputProc( * * FileCloseProc -- * - * This function is called from the generic IO level to perform + * This procedure is called from the generic IO level to perform * channel-type-specific cleanup when a file based channel is closed. * * Results: @@ -378,13 +552,16 @@ FileOutputProc( */ static int -FileCloseProc( - ClientData instanceData, /* File state. */ - Tcl_Interp *interp) /* For error reporting - unused. */ +FileCloseProc(instanceData, interp) + ClientData instanceData; /* File state. */ + Tcl_Interp *interp; /* For error reporting - unused. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; int errorCode = 0; - +#ifdef DEPRECATED + FileState **nextPtrPtr; + ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); +#endif /* DEPRECATED */ Tcl_DeleteFileHandler(fsPtr->fd); /* @@ -397,7 +574,7 @@ FileCloseProc( errorCode = errno; } } - ckfree(fsPtr); + ckfree((char *) fsPtr); return errorCode; } @@ -406,51 +583,49 @@ FileCloseProc( * * FileSeekProc -- * - * This function is called by the generic IO level to move the access - * point in a file based channel. + * This procedure is called by the generic IO level to move the + * access point in a file based channel. * * Results: - * -1 if failed, the new position if successful. An output argument - * contains the POSIX error code if an error occurred, or zero. + * -1 if failed, the new position if successful. An output + * argument contains the POSIX error code if an error occurred, + * or zero. * * Side effects: - * Moves the location at which the channel will be accessed in future - * operations. + * Moves the location at which the channel will be accessed in + * future operations. * *---------------------------------------------------------------------- */ static int -FileSeekProc( - ClientData instanceData, /* File state. */ - long offset, /* Offset to seek to. */ - int mode, /* Relative to where should we seek? Can be +FileSeekProc(instanceData, offset, mode, errorCodePtr) + ClientData instanceData; /* File state. */ + long offset; /* Offset to seek to. */ + int mode; /* Relative to where should we seek? Can be * one of SEEK_START, SEEK_SET or SEEK_END. */ - int *errorCodePtr) /* To store error code. */ + int *errorCodePtr; /* To store error code. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; Tcl_WideInt oldLoc, newLoc; /* * Save our current place in case we need to roll-back the seek. */ - oldLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) 0, SEEK_CUR); if (oldLoc == Tcl_LongAsWide(-1)) { /* - * Bad things are happening. Error out... + * Bad things are happening. Error out... */ - *errorCodePtr = errno; return -1; } - + newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode); - + /* * Check for expressability in our return type, and roll-back otherwise. */ - if (newLoc > Tcl_LongAsWide(INT_MAX)) { *errorCodePtr = EOVERFLOW; TclOSseek(fsPtr->fd, (Tcl_SeekOffset) oldLoc, SEEK_SET); @@ -466,30 +641,31 @@ FileSeekProc( * * FileWideSeekProc -- * - * This function is called by the generic IO level to move the access - * point in a file based channel, with offsets expressed as wide - * integers. + * This procedure is called by the generic IO level to move the + * access point in a file based channel, with offsets expressed + * as wide integers. * * Results: - * -1 if failed, the new position if successful. An output argument - * contains the POSIX error code if an error occurred, or zero. + * -1 if failed, the new position if successful. An output + * argument contains the POSIX error code if an error occurred, + * or zero. * * Side effects: - * Moves the location at which the channel will be accessed in future - * operations. + * Moves the location at which the channel will be accessed in + * future operations. * *---------------------------------------------------------------------- */ static Tcl_WideInt -FileWideSeekProc( - ClientData instanceData, /* File state. */ - Tcl_WideInt offset, /* Offset to seek to. */ - int mode, /* Relative to where should we seek? Can be +FileWideSeekProc(instanceData, offset, mode, errorCodePtr) + ClientData instanceData; /* File state. */ + Tcl_WideInt offset; /* Offset to seek to. */ + int mode; /* Relative to where should we seek? Can be * one of SEEK_START, SEEK_CUR or SEEK_END. */ - int *errorCodePtr) /* To store error code. */ + int *errorCodePtr; /* To store error code. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; Tcl_WideInt newLoc; newLoc = TclOSseek(fsPtr->fd, (Tcl_SeekOffset) offset, mode); @@ -516,24 +692,25 @@ FileWideSeekProc( */ static void -FileWatchProc( - ClientData instanceData, /* The file state. */ - int mask) /* Events of interest; an OR-ed combination of - * TCL_READABLE, TCL_WRITABLE and - * TCL_EXCEPTION. */ +FileWatchProc(instanceData, mask) + ClientData instanceData; /* The file state. */ + int mask; /* Events of interest; an OR-ed + * combination of TCL_READABLE, + * TCL_WRITABLE and TCL_EXCEPTION. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; /* - * Make sure we only register for events that are valid on this file. Note - * that we are passing Tcl_NotifyChannel directly to Tcl_CreateFileHandler - * with the channel pointer as the client data. + * Make sure we only register for events that are valid on this file. + * Note that we are passing Tcl_NotifyChannel directly to + * Tcl_CreateFileHandler with the channel pointer as the client data. */ mask &= fsPtr->validMask; if (mask) { Tcl_CreateFileHandler(fsPtr->fd, mask, - (Tcl_FileProc *) Tcl_NotifyChannel, fsPtr->channel); + (Tcl_FileProc *) Tcl_NotifyChannel, + (ClientData) fsPtr->channel); } else { Tcl_DeleteFileHandler(fsPtr->fd); } @@ -544,12 +721,12 @@ FileWatchProc( * * FileGetHandleProc -- * - * Called from Tcl_GetChannelHandle to retrieve OS handles from a file - * based channel. + * Called from Tcl_GetChannelHandle to retrieve OS handles from + * a file based channel. * * Results: - * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if there is no - * handle for the specified direction. + * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if + * there is no handle for the specified direction. * * Side effects: * None. @@ -558,36 +735,122 @@ FileWatchProc( */ static int -FileGetHandleProc( - ClientData instanceData, /* The file state. */ - int direction, /* TCL_READABLE or TCL_WRITABLE */ - ClientData *handlePtr) /* Where to store the handle. */ +FileGetHandleProc(instanceData, direction, handlePtr) + ClientData instanceData; /* The file state. */ + int direction; /* TCL_READABLE or TCL_WRITABLE */ + ClientData *handlePtr; /* Where to store the handle. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; if (direction & fsPtr->validMask) { - *handlePtr = INT2PTR(fsPtr->fd); + *handlePtr = (ClientData) fsPtr->fd; return TCL_OK; + } else { + return TCL_ERROR; } - return TCL_ERROR; } + +#ifdef SUPPORTS_TTY + +/* + *---------------------------------------------------------------------- + * + * TtyCloseProc -- + * + * This procedure is called from the generic IO level to perform + * channel-type-specific cleanup when a tty based channel is closed. + * + * Results: + * 0 if successful, errno if failed. + * + * Side effects: + * Closes the device of the channel. + * + *---------------------------------------------------------------------- + */ +static int +TtyCloseProc(instanceData, interp) + ClientData instanceData; /* Tty state. */ + Tcl_Interp *interp; /* For error reporting - unused. */ +{ +#if BAD_TIP35_FLUSH + TtyState *ttyPtr = (TtyState *) instanceData; +#endif /* BAD_TIP35_FLUSH */ +#ifdef TTYFLUSH + TTYFLUSH(ttyPtr->fs.fd); +#endif /* TTYFLUSH */ +#if 0 + /* + * TIP#35 agreed to remove the unsave so that TCL could be used as a + * simple stty. + * It would be cleaner to remove all the stuff related to + * TtyState.stateUpdated + * TtyState.savedState + * Then the structure TtyState would be the same as FileState. + * IMO this cleanup could better be done for the final 8.4 release + * after nobody complained about the missing unsave. -- schroedter + */ + if (ttyPtr->stateUpdated) { + SETIOSTATE(ttyPtr->fs.fd, &ttyPtr->savedState); + } +#endif + return FileCloseProc(instanceData, interp); +} + +/* + *---------------------------------------------------------------------- + * + * TtyOutputProc-- + * + * This procedure is invoked from the generic IO level to write + * output to a TTY channel. + * + * Results: + * The number of bytes written is returned or -1 on error. An + * output argument contains a POSIX error code if an error occurred, + * or zero. + * + * Side effects: + * Writes output on the output device of the channel + * if the channel is not designated to be closed. + * + *---------------------------------------------------------------------- + */ + +#if BAD_TIP35_FLUSH +static int +TtyOutputProc(instanceData, buf, toWrite, errorCodePtr) + ClientData instanceData; /* File state. */ + CONST char *buf; /* The data buffer. */ + int toWrite; /* How many bytes to write? */ + int *errorCodePtr; /* Where to store error code. */ +{ + if (TclInExit()) { + /* + * Do not write data during Tcl exit. + * Serial port may block preventing Tcl from exit. + */ + return toWrite; + } else { + return FileOutputProc(instanceData, buf, toWrite, errorCodePtr); + } +} +#endif /* BAD_TIP35_FLUSH */ -#ifdef SUPPORTS_TTY #ifdef USE_TERMIOS /* *---------------------------------------------------------------------- * * TtyModemStatusStr -- * - * Converts a RS232 modem status list of readable flags + * Converts a RS232 modem status list of readable flags * *---------------------------------------------------------------------- */ - static void -TtyModemStatusStr( - int status, /* RS232 modem status */ - Tcl_DString *dsPtr) /* Where to store string */ +TtyModemStatusStr(status, dsPtr) + int status; /* RS232 modem status */ + Tcl_DString *dsPtr; /* Where to store string */ { #ifdef TIOCM_CTS Tcl_DStringAppendElement(dsPtr, "CTS"); @@ -620,25 +883,25 @@ TtyModemStatusStr( * interp is not NULL. * * Side effects: - * May modify an option on a device. Sets Error message if needed (by - * calling Tcl_BadChannelOption). + * May modify an option on a device. + * Sets Error message if needed (by calling Tcl_BadChannelOption). * *---------------------------------------------------------------------- */ -static int -TtySetOptionProc( - ClientData instanceData, /* File state. */ - Tcl_Interp *interp, /* For error reporting - can be NULL. */ - const char *optionName, /* Which option to set? */ - const char *value) /* New value for option. */ +static int +TtySetOptionProc(instanceData, interp, optionName, value) + ClientData instanceData; /* File state. */ + Tcl_Interp *interp; /* For error reporting - can be NULL. */ + CONST char *optionName; /* Which option to set? */ + CONST char *value; /* New value for option. */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; unsigned int len, vlen; TtyAttrs tty; #ifdef USE_TERMIOS int flag, control, argc; - const char **argv; + CONST char **argv; IOSTATE iostate; #endif /* USE_TERMIOS */ @@ -648,18 +911,17 @@ TtySetOptionProc( /* * Option -mode baud,parity,databits,stopbits */ - if ((len > 2) && (strncmp(optionName, "-mode", len) == 0)) { if (TtyParseMode(interp, value, &tty.baud, &tty.parity, &tty.data, &tty.stop) != TCL_OK) { return TCL_ERROR; } - /* - * system calls results should be checked there. - dl + * system calls results should be checked there. -- dl */ TtySetAttributes(fsPtr->fd, &tty); + ((TtyState *) fsPtr)->stateUpdated = 1; return TCL_OK; } @@ -668,26 +930,23 @@ TtySetOptionProc( /* * Option -handshake none|xonxoff|rtscts|dtrdsr */ - if ((len > 1) && (strncmp(optionName, "-handshake", len) == 0)) { /* - * Reset all handshake options. DTR and RTS are ON by default. + * Reset all handshake options + * DTR and RTS are ON by default */ - GETIOSTATE(fsPtr->fd, &iostate); - CLEAR_BITS(iostate.c_iflag, IXON | IXOFF | IXANY); + iostate.c_iflag &= ~(IXON | IXOFF | IXANY); #ifdef CRTSCTS - CLEAR_BITS(iostate.c_cflag, CRTSCTS); + iostate.c_cflag &= ~CRTSCTS; #endif /* CRTSCTS */ if (strncasecmp(value, "NONE", vlen) == 0) { - /* - * Leave all handshake options disabled. - */ + /* leave all handshake options disabled */ } else if (strncasecmp(value, "XONXOFF", vlen) == 0) { - SET_BITS(iostate.c_iflag, IXON | IXOFF | IXANY); + iostate.c_iflag |= (IXON | IXOFF | IXANY); } else if (strncasecmp(value, "RTSCTS", vlen) == 0) { #ifdef CRTSCTS - SET_BITS(iostate.c_cflag, CRTSCTS); + iostate.c_cflag |= CRTSCTS; #else /* !CRTSTS */ UNSUPPORTED_OPTION("-handshake RTSCTS"); return TCL_ERROR; @@ -697,11 +956,9 @@ TtySetOptionProc( return TCL_ERROR; } else { if (interp) { - Tcl_AppendResult(interp, "bad value for -handshake: " + Tcl_AppendResult(interp, "bad value for -handshake: ", "must be one of xonxoff, rtscts, dtrdsr or none", - NULL); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", - "VALUE", NULL); + (char *) NULL); } return TCL_ERROR; } @@ -712,42 +969,31 @@ TtySetOptionProc( /* * Option -xchar {\x11 \x13} */ - if ((len > 1) && (strncmp(optionName, "-xchar", len) == 0)) { - Tcl_DString ds; - + GETIOSTATE(fsPtr->fd, &iostate); if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) { return TCL_ERROR; - } else if (argc != 2) { + } + if (argc == 2) { + iostate.c_cc[VSTART] = argv[0][0]; + iostate.c_cc[VSTOP] = argv[1][0]; + } else { if (interp) { - Tcl_AppendResult(interp, "bad value for -xchar: " - "should be a list of two elements", NULL); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", - "VALUE", NULL); + Tcl_AppendResult(interp, + "bad value for -xchar: should be a list of two elements", + (char *) NULL); } - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; } - - GETIOSTATE(fsPtr->fd, &iostate); - - Tcl_UtfToExternalDString(NULL, argv[0], -1, &ds); - iostate.c_cc[VSTART] = *(const cc_t *) Tcl_DStringValue(&ds); - Tcl_DStringSetLength(&ds, 0); - - Tcl_UtfToExternalDString(NULL, argv[1], -1, &ds); - iostate.c_cc[VSTOP] = *(const cc_t *) Tcl_DStringValue(&ds); - Tcl_DStringFree(&ds); - ckfree(argv); - SETIOSTATE(fsPtr->fd, &iostate); + ckfree((char *) argv); return TCL_OK; } /* * Option -timeout msec */ - if ((len > 2) && (strncmp(optionName, "-timeout", len) == 0)) { int msec; @@ -755,8 +1001,8 @@ TtySetOptionProc( if (Tcl_GetInt(interp, value, &msec) != TCL_OK) { return TCL_ERROR; } - iostate.c_cc[VMIN] = 0; - iostate.c_cc[VTIME] = (msec==0) ? 0 : (msec<100) ? 1 : (msec+50)/100; + iostate.c_cc[VMIN] = 0; + iostate.c_cc[VTIME] = (msec == 0) ? 0 : (msec < 100) ? 1 : (msec+50)/100; SETIOSTATE(fsPtr->fd, &iostate); return TCL_OK; } @@ -764,52 +1010,49 @@ TtySetOptionProc( /* * Option -ttycontrol {DTR 1 RTS 0 BREAK 0} */ - if ((len > 4) && (strncmp(optionName, "-ttycontrol", len) == 0)) { int i; - if (Tcl_SplitList(interp, value, &argc, &argv) == TCL_ERROR) { return TCL_ERROR; } if ((argc % 2) == 1) { if (interp) { - Tcl_AppendResult(interp, "bad value for -ttycontrol: " - "should be a list of signal,value pairs", NULL); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", - "VALUE", NULL); + Tcl_AppendResult(interp, + "bad value for -ttycontrol: should be a list of", + "signal,value pairs", (char *) NULL); } - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; } GETCONTROL(fsPtr->fd, &control); for (i = 0; i < argc-1; i += 2) { if (Tcl_GetBoolean(interp, argv[i+1], &flag) == TCL_ERROR) { - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; } if (strncasecmp(argv[i], "DTR", strlen(argv[i])) == 0) { #ifdef TIOCM_DTR if (flag) { - SET_BITS(control, TIOCM_DTR); + control |= TIOCM_DTR; } else { - CLEAR_BITS(control, TIOCM_DTR); + control &= ~TIOCM_DTR; } #else /* !TIOCM_DTR */ UNSUPPORTED_OPTION("-ttycontrol DTR"); - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; #endif /* TIOCM_DTR */ } else if (strncasecmp(argv[i], "RTS", strlen(argv[i])) == 0) { #ifdef TIOCM_RTS if (flag) { - SET_BITS(control, TIOCM_RTS); + control |= TIOCM_RTS; } else { - CLEAR_BITS(control, TIOCM_RTS); + control &= ~TIOCM_RTS; } #else /* !TIOCM_RTS*/ UNSUPPORTED_OPTION("-ttycontrol RTS"); - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; #endif /* TIOCM_RTS*/ } else if (strncasecmp(argv[i], "BREAK", strlen(argv[i])) == 0) { @@ -817,29 +1060,27 @@ TtySetOptionProc( SETBREAK(fsPtr->fd, flag); #else /* !SETBREAK */ UNSUPPORTED_OPTION("-ttycontrol BREAK"); - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; #endif /* SETBREAK */ } else { if (interp) { Tcl_AppendResult(interp, "bad signal \"", argv[i], - "\" for -ttycontrol: must be " - "DTR, RTS or BREAK", NULL); - Tcl_SetErrorCode(interp, "TCL", "OPERATION", "FCONFIGURE", - "VALUE", NULL); + "\" for -ttycontrol: must be ", + "DTR, RTS or BREAK", (char *) NULL); } - ckfree(argv); + ckfree((char *) argv); return TCL_ERROR; } } /* -ttycontrol options loop */ SETCONTROL(fsPtr->fd, &control); - ckfree(argv); + ckfree((char *) argv); return TCL_OK; } return Tcl_BadChannelOption(interp, optionName, - "mode handshake timeout ttycontrol xchar"); + "mode handshake timeout ttycontrol xchar "); #else /* !USE_TERMIOS */ return Tcl_BadChannelOption(interp, optionName, "mode"); @@ -851,34 +1092,35 @@ TtySetOptionProc( * * TtyGetOptionProc -- * - * Gets a mode associated with an IO channel. If the optionName arg is - * non-NULL, retrieves the value of that option. If the optionName arg is - * NULL, retrieves a list of alternating option names and values for the - * given channel. + * Gets a mode associated with an IO channel. If the optionName arg + * is non NULL, retrieves the value of that option. If the optionName + * arg is NULL, retrieves a list of alternating option names and + * values for the given channel. * * Results: - * A standard Tcl result. Also sets the supplied DString to the string - * value of the option(s) returned. + * A standard Tcl result. Also sets the supplied DString to the + * string value of the option(s) returned. * * Side effects: - * The string returned by this function is in static storage and may be - * reused at any time subsequent to the call. Sets error message if - * needed (by calling Tcl_BadChannelOption). + * The string returned by this function is in static storage and + * may be reused at any time subsequent to the call. + * Sets Error message if needed (by calling Tcl_BadChannelOption). * *---------------------------------------------------------------------- */ -static int -TtyGetOptionProc( - ClientData instanceData, /* File state. */ - Tcl_Interp *interp, /* For error reporting - can be NULL. */ - const char *optionName, /* Option to get. */ - Tcl_DString *dsPtr) /* Where to store value(s). */ +static int +TtyGetOptionProc(instanceData, interp, optionName, dsPtr) + ClientData instanceData; /* File state. */ + Tcl_Interp *interp; /* For error reporting - can be NULL. */ + CONST char *optionName; /* Option to get. */ + Tcl_DString *dsPtr; /* Where to store value(s). */ { - FileState *fsPtr = instanceData; + FileState *fsPtr = (FileState *) instanceData; unsigned int len; - char buf[3*TCL_INTEGER_SPACE + 16]; - int valid = 0; /* Flag if valid option parsed. */ + char buf[3 * TCL_INTEGER_SPACE + 16]; + TtyAttrs tty; + int valid = 0; /* flag if valid option parsed */ if (optionName == NULL) { len = 0; @@ -889,8 +1131,6 @@ TtyGetOptionProc( Tcl_DStringAppendElement(dsPtr, "-mode"); } if (len==0 || (len>2 && strncmp(optionName, "-mode", len)==0)) { - TtyAttrs tty; - valid = 1; TtyGetAttributes(fsPtr->fd, &tty); sprintf(buf, "%d,%c,%d,%d", tty.baud, tty.parity, tty.data, tty.stop); @@ -899,42 +1139,34 @@ TtyGetOptionProc( #ifdef USE_TERMIOS /* - * Get option -xchar + * get option -xchar */ - if (len == 0) { Tcl_DStringAppendElement(dsPtr, "-xchar"); Tcl_DStringStartSublist(dsPtr); } if (len==0 || (len>1 && strncmp(optionName, "-xchar", len)==0)) { IOSTATE iostate; - Tcl_DString ds; - valid = 1; - GETIOSTATE(fsPtr->fd, &iostate); - Tcl_DStringInit(&ds); - - Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTART], 1, &ds); - Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); - Tcl_DStringSetLength(&ds, 0); - Tcl_ExternalToUtfDString(NULL, (char *) &iostate.c_cc[VSTOP], 1, &ds); - Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); - Tcl_DStringFree(&ds); + GETIOSTATE(fsPtr->fd, &iostate); + sprintf(buf, "%c", iostate.c_cc[VSTART]); + Tcl_DStringAppendElement(dsPtr, buf); + sprintf(buf, "%c", iostate.c_cc[VSTOP]); + Tcl_DStringAppendElement(dsPtr, buf); } if (len == 0) { Tcl_DStringEndSublist(dsPtr); } /* - * Get option -queue - * Option is readonly and returned by [fconfigure chan -queue] but not - * returned by unnamed [fconfigure chan]. + * get option -queue + * option is readonly and returned by [fconfigure chan -queue] + * but not returned by unnamed [fconfigure chan] */ - if ((len > 1) && (strncmp(optionName, "-queue", len) == 0)) { - int inQueue=0, outQueue=0, inBuffered, outBuffered; - + int inQueue=0, outQueue=0; + int inBuffered, outBuffered; valid = 1; #ifdef GETREADQUEUE GETREADQUEUE(fsPtr->fd, inQueue); @@ -942,7 +1174,7 @@ TtyGetOptionProc( #ifdef GETWRITEQUEUE GETWRITEQUEUE(fsPtr->fd, outQueue); #endif /* GETWRITEQUEUE */ - inBuffered = Tcl_InputBuffered(fsPtr->channel); + inBuffered = Tcl_InputBuffered(fsPtr->channel); outBuffered = Tcl_OutputBuffered(fsPtr->channel); sprintf(buf, "%d", inBuffered+inQueue); @@ -952,14 +1184,12 @@ TtyGetOptionProc( } /* - * Get option -ttystatus - * Option is readonly and returned by [fconfigure chan -ttystatus] but not - * returned by unnamed [fconfigure chan]. + * get option -ttystatus + * option is readonly and returned by [fconfigure chan -ttystatus] + * but not returned by unnamed [fconfigure chan] */ - if ((len > 4) && (strncmp(optionName, "-ttystatus", len) == 0)) { int status; - valid = 1; GETCONTROL(fsPtr->fd, &status); TtyModemStatusStr(status, dsPtr); @@ -968,20 +1198,29 @@ TtyGetOptionProc( if (valid) { return TCL_OK; - } - return Tcl_BadChannelOption(interp, optionName, "mode" + } else { + return Tcl_BadChannelOption(interp, optionName, #ifdef USE_TERMIOS - " queue ttystatus xchar" + "mode queue ttystatus xchar"); +#else /* !USE_TERMIOS */ + "mode"); #endif /* USE_TERMIOS */ - ); + } } +#undef DIRECT_BAUD +#ifdef B4800 +# if (B4800 == 4800) +# define DIRECT_BAUD +# endif /* B4800 == 4800 */ +#endif /* B4800 */ + #ifdef DIRECT_BAUD -# define TtyGetSpeed(baud) ((unsigned) (baud)) -# define TtyGetBaud(speed) ((int) (speed)) +# define TtyGetSpeed(baud) ((unsigned) (baud)) +# define TtyGetBaud(speed) ((int) (speed)) #else /* !DIRECT_BAUD */ -static const struct {int baud; unsigned long speed;} speeds[] = { +static CONST struct {int baud; unsigned long speed;} speeds[] = { #ifdef B0 {0, B0}, #endif @@ -1077,9 +1316,9 @@ static const struct {int baud; unsigned long speed;} speeds[] = { * * TtyGetSpeed -- * - * Given a baud rate, get the mask value that should be stored in the - * termios, termio, or sgttyb structure in order to select that baud - * rate. + * Given a baud rate, get the mask value that should be stored in + * the termios, termio, or sgttyb structure in order to select that + * baud rate. * * Results: * As above. @@ -1091,8 +1330,8 @@ static const struct {int baud; unsigned long speed;} speeds[] = { */ static unsigned long -TtyGetSpeed( - int baud) /* The baud rate to look up. */ +TtyGetSpeed(baud) + int baud; /* The baud rate to look up. */ { int bestIdx, bestDiff, i, diff; @@ -1101,8 +1340,8 @@ TtyGetSpeed( /* * If the baud rate does not correspond to one of the known mask values, - * choose the mask value whose baud rate is closest to the specified baud - * rate. + * choose the mask value whose baud rate is closest to the specified + * baud rate. */ for (i = 0; speeds[i].baud >= 0; i++) { @@ -1123,11 +1362,11 @@ TtyGetSpeed( * * TtyGetBaud -- * - * Given a speed mask value from a termios, termio, or sgttyb structure, - * get the baus rate that corresponds to that mask value. + * Given a speed mask value from a termios, termio, or sgttyb + * structure, get the baus rate that corresponds to that mask value. * * Results: - * As above. If the mask value was not recognized, 0 is returned. + * As above. If the mask value was not recognized, 0 is returned. * * Side effects: * None. @@ -1136,8 +1375,8 @@ TtyGetSpeed( */ static int -TtyGetBaud( - unsigned long speed) /* Speed mask value to look up. */ +TtyGetBaud(speed) + unsigned long speed; /* Speed mask value to look up. */ { int i; @@ -1148,7 +1387,9 @@ TtyGetBaud( } return 0; } + #endif /* !DIRECT_BAUD */ + /* *--------------------------------------------------------------------------- @@ -1167,10 +1408,10 @@ TtyGetBaud( */ static void -TtyGetAttributes( - int fd, /* Open file descriptor for serial port to be - * queried. */ - TtyAttrs *ttyPtr) /* Buffer filled with serial port +TtyGetAttributes(fd, ttyPtr) + int fd; /* Open file descriptor for serial port to + * be queried. */ + TtyAttrs *ttyPtr; /* Buffer filled with serial port * attributes. */ { IOSTATE iostate; @@ -1184,17 +1425,17 @@ TtyGetAttributes( parity = 'n'; #ifdef PAREXT switch ((int) (iostate.c_cflag & (PARENB | PARODD | PAREXT))) { - case PARENB : parity = 'e'; break; - case PARENB | PARODD : parity = 'o'; break; - case PARENB | PAREXT : parity = 's'; break; - case PARENB | PARODD | PAREXT : parity = 'm'; break; + case PARENB : parity = 'e'; break; + case PARENB | PARODD : parity = 'o'; break; + case PARENB | PAREXT : parity = 's'; break; + case PARENB | PARODD | PAREXT : parity = 'm'; break; } #else /* !PAREXT */ switch ((int) (iostate.c_cflag & (PARENB | PARODD))) { - case PARENB : parity = 'e'; break; - case PARENB | PARODD : parity = 'o'; break; + case PARENB : parity = 'e'; break; + case PARENB | PARODD : parity = 'o'; break; } -#endif /* PAREXT */ +#endif /* !PAREXT */ data = iostate.c_cflag & CSIZE; data = (data == CS5) ? 5 : (data == CS6) ? 6 : (data == CS7) ? 7 : 8; @@ -1207,10 +1448,10 @@ TtyGetAttributes( parity = 'n'; switch (iostate.c_cflag & (PARENB | PARODD | PAREXT)) { - case PARENB : parity = 'e'; break; - case PARENB | PARODD : parity = 'o'; break; - case PARENB | PAREXT : parity = 's'; break; - case PARENB | PARODD | PAREXT : parity = 'm'; break; + case PARENB : parity = 'e'; break; + case PARENB | PARODD : parity = 'o'; break; + case PARENB | PAREXT : parity = 's'; break; + case PARENB | PARODD | PAREXT : parity = 'm'; break; } data = iostate.c_cflag & CSIZE; @@ -1245,7 +1486,7 @@ TtyGetAttributes( * * TtySetAttributes -- * - * Set the current attributes of the specified serial device. + * Set the current attributes of the specified serial device. * * Results: * None. @@ -1257,11 +1498,11 @@ TtyGetAttributes( */ static void -TtySetAttributes( - int fd, /* Open file descriptor for serial port to be - * modified. */ - TtyAttrs *ttyPtr) /* Buffer containing new attributes for serial - * port. */ +TtySetAttributes(fd, ttyPtr) + int fd; /* Open file descriptor for serial port to + * be modified. */ + TtyAttrs *ttyPtr; /* Buffer containing new attributes for + * serial port. */ { IOSTATE iostate; @@ -1275,28 +1516,25 @@ TtySetAttributes( flag = 0; parity = ttyPtr->parity; if (parity != 'n') { - SET_BITS(flag, PARENB); + flag |= PARENB; #ifdef PAREXT - CLEAR_BITS(iostate.c_cflag, PAREXT); + iostate.c_cflag &= ~PAREXT; if ((parity == 'm') || (parity == 's')) { - SET_BITS(flag, PAREXT); + flag |= PAREXT; } #endif /* PAREXT */ if ((parity == 'm') || (parity == 'o')) { - SET_BITS(flag, PARODD); + flag |= PARODD; } } data = ttyPtr->data; - SET_BITS(flag, - (data == 5) ? CS5 : - (data == 6) ? CS6 : - (data == 7) ? CS7 : CS8); + flag |= (data == 5) ? CS5 : (data == 6) ? CS6 : (data == 7) ? CS7 : CS8; if (ttyPtr->stop == 2) { - SET_BITS(flag, CSTOPB); + flag |= CSTOPB; } - CLEAR_BITS(iostate.c_cflag, PARENB | PARODD | CSIZE | CSTOPB); - SET_BITS(iostate.c_cflag, flag); + iostate.c_cflag &= ~(PARENB | PARODD | CSIZE | CSTOPB); + iostate.c_cflag |= flag; #endif /* USE_TERMIOS */ @@ -1304,31 +1542,28 @@ TtySetAttributes( int parity, data, flag; GETIOSTATE(fd, &iostate); - CLEAR_BITS(iostate.c_cflag, CBAUD); - SET_BITS(iostate.c_cflag, TtyGetSpeed(ttyPtr->baud)); + iostate.c_cflag &= ~CBAUD; + iostate.c_cflag |= TtyGetSpeed(ttyPtr->baud); flag = 0; parity = ttyPtr->parity; if (parity != 'n') { - SET_BITS(flag, PARENB); + flag |= PARENB; if ((parity == 'm') || (parity == 's')) { - SET_BITS(flag, PAREXT); + flag |= PAREXT; } if ((parity == 'm') || (parity == 'o')) { - SET_BITS(flag, PARODD); + flag |= PARODD; } } data = ttyPtr->data; - SET_BITS(flag, - (data == 5) ? CS5 : - (data == 6) ? CS6 : - (data == 7) ? CS7 : CS8); + flag |= (data == 5) ? CS5 : (data == 6) ? CS6 : (data == 7) ? CS7 : CS8; if (ttyPtr->stop == 2) { - SET_BITS(flag, CSTOPB); + flag |= CSTOPB; } - CLEAR_BITS(iostate.c_cflag, PARENB | PARODD | PAREXT | CSIZE | CSTOPB); - SET_BITS(iostate.c_cflag, flag); + iostate.c_cflag &= ~(PARENB | PARODD | PAREXT | CSIZE | CSTOPB); + iostate.c_cflag |= flag; #endif /* USE_TERMIO */ @@ -1341,11 +1576,11 @@ TtySetAttributes( parity = ttyPtr->parity; if (parity == 'e') { - CLEAR_BITS(iostate.sg_flags, ODDP); - SET_BITS(iostate.sg_flags, EVENP); + iostate.sg_flags &= ~ODDP; + iostate.sg_flags |= EVENP; } else if (parity == 'o') { - CLEAR_BITS(iostate.sg_flags, EVENP); - SET_BITS(iostate.sg_flags, ODDP); + iostate.sg_flags &= ~EVENP; + iostate.sg_flags |= ODDP; } #endif /* USE_SGTTY */ @@ -1357,13 +1592,13 @@ TtySetAttributes( * * TtyParseMode -- * - * Parse the "-mode" argument to the fconfigure command. The argument is - * of the form baud,parity,data,stop. + * Parse the "-mode" argument to the fconfigure command. The argument + * is of the form baud,parity,data,stop. * * Results: - * The return value is TCL_OK if the argument was successfully parsed, - * TCL_ERROR otherwise. If TCL_ERROR is returned, an error message is - * left in the interp's result (if interp is non-NULL). + * The return value is TCL_OK if the argument was successfully + * parsed, TCL_ERROR otherwise. If TCL_ERROR is returned, an + * error message is left in the interp's result (if interp is non-NULL). * * Side effects: * None. @@ -1372,17 +1607,17 @@ TtySetAttributes( */ static int -TtyParseMode( - Tcl_Interp *interp, /* If non-NULL, interp for error return. */ - const char *mode, /* Mode string to be parsed. */ - int *speedPtr, /* Filled with baud rate from mode string. */ - int *parityPtr, /* Filled with parity from mode string. */ - int *dataPtr, /* Filled with data bits from mode string. */ - int *stopPtr) /* Filled with stop bits from mode string. */ +TtyParseMode(interp, mode, speedPtr, parityPtr, dataPtr, stopPtr) + Tcl_Interp *interp; /* If non-NULL, interp for error return. */ + CONST char *mode; /* Mode string to be parsed. */ + int *speedPtr; /* Filled with baud rate from mode string. */ + int *parityPtr; /* Filled with parity from mode string. */ + int *dataPtr; /* Filled with data bits from mode string. */ + int *stopPtr; /* Filled with stop bits from mode string. */ { int i, end; char parity; - static const char *bad = "bad value for -mode"; + static char *bad = "bad value for -mode"; i = sscanf(mode, "%d,%c,%d,%d%n", speedPtr, &parity, dataPtr, stopPtr, &end); @@ -1390,36 +1625,29 @@ TtyParseMode( if (interp != NULL) { Tcl_AppendResult(interp, bad, ": should be baud,parity,data,stop", NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } - /* - * Only allow setting mark/space parity on platforms that support it Make - * sure to allow for the case where strchr is a macro. [Bug: 5089] - * - * We cannot if/else/endif the strchr arguments, it has to be the whole - * function. On AIX this function is apparently a macro, and macros do - * not allow pre-processor directives in their arguments. + * Only allow setting mark/space parity on platforms that support it + * Make sure to allow for the case where strchr is a macro. + * [Bug: 5089] */ - if ( #if defined(PAREXT) || defined(USE_TERMIO) - strchr("noems", parity) + strchr("noems", parity) == NULL #else - strchr("noe", parity) + strchr("noe", parity) == NULL #endif /* PAREXT|USE_TERMIO */ - == NULL) { + ) { if (interp != NULL) { - Tcl_AppendResult(interp, bad, " parity: should be ", + Tcl_AppendResult(interp, bad, #if defined(PAREXT) || defined(USE_TERMIO) - "n, o, e, m, or s", + " parity: should be n, o, e, m, or s", #else - "n, o, or e", + " parity: should be n, o, or e", #endif /* PAREXT|USE_TERMIO */ NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } @@ -1428,14 +1656,12 @@ TtyParseMode( if (interp != NULL) { Tcl_AppendResult(interp, bad, " data: should be 5, 6, 7, or 8", NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } if ((*stopPtr < 0) || (*stopPtr > 2)) { if (interp != NULL) { Tcl_AppendResult(interp, bad, " stop: should be 1 or 2", NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "SERIALMODE", NULL); } return TCL_ERROR; } @@ -1447,68 +1673,70 @@ TtyParseMode( * * TtyInit -- * - * Given file descriptor that refers to a serial port, initialize the - * serial port to a set of sane values so that Tcl can talk to a device - * located on the serial port. Note that no initialization happens if the - * initialize flag is not set; this is necessary for the correct handling - * of UNIX console TTYs at startup. + * Given file descriptor that refers to a serial port, + * initialize the serial port to a set of sane values so that + * Tcl can talk to a device located on the serial port. + * Note that no initialization happens if the initialize flag + * is not set; this is necessary for the correct handling of + * UNIX console TTYs at startup. * * Results: - * A pointer to a FileState suitable for use with Tcl_CreateChannel and - * the ttyChannelType structure. + * A pointer to a FileState suitable for use with Tcl_CreateChannel + * and the ttyChannelType structure. * * Side effects: - * Serial device initialized to non-blocking raw mode, similar to sockets - * (if initialize flag is non-zero.) All other modes can be simulated on - * top of this in Tcl. + * Serial device initialized to non-blocking raw mode, similar to + * sockets (if initialize flag is non-zero.) All other modes can + * be simulated on top of this in Tcl. * *--------------------------------------------------------------------------- */ static FileState * -TtyInit( - int fd, /* Open file descriptor for serial port to be - * initialized. */ - int initialize) +TtyInit(fd, initialize) + int fd; /* Open file descriptor for serial port to + * be initialized. */ + int initialize; { - TtyState *ttyPtr = ckalloc(sizeof(TtyState)); - int stateUpdated = 0; + TtyState *ttyPtr; + ttyPtr = (TtyState *) ckalloc((unsigned) sizeof(TtyState)); GETIOSTATE(fd, &ttyPtr->savedState); + ttyPtr->stateUpdated = 0; if (initialize) { IOSTATE iostate = ttyPtr->savedState; #if defined(USE_TERMIOS) || defined(USE_TERMIO) - if (iostate.c_iflag != IGNBRK - || iostate.c_oflag != 0 - || iostate.c_lflag != 0 - || iostate.c_cflag & CREAD - || iostate.c_cc[VMIN] != 1 - || iostate.c_cc[VTIME] != 0) { - stateUpdated = 1; + if (iostate.c_iflag != IGNBRK || + iostate.c_oflag != 0 || + iostate.c_lflag != 0 || + iostate.c_cflag & CREAD || + iostate.c_cc[VMIN] != 1 || + iostate.c_cc[VTIME] != 0) { + ttyPtr->stateUpdated = 1; } iostate.c_iflag = IGNBRK; iostate.c_oflag = 0; iostate.c_lflag = 0; - SET_BITS(iostate.c_cflag, CREAD); + iostate.c_cflag |= CREAD; iostate.c_cc[VMIN] = 1; iostate.c_cc[VTIME] = 0; #endif /* USE_TERMIOS|USE_TERMIO */ #ifdef USE_SGTTY - if ((iostate.sg_flags & (EVENP | ODDP)) - || !(iostate.sg_flags & RAW)) { + if ((iostate.sg_flags & (EVENP | ODDP)) || + !(iostate.sg_flags & RAW)) { ttyPtr->stateUpdated = 1; } - iostate.sg_flags &= EVENP | ODDP; - SET_BITS(iostate.sg_flags, RAW); + iostate.sg_flags &= (EVENP | ODDP); + iostate.sg_flags |= RAW; #endif /* USE_SGTTY */ /* - * Only update if we're changing anything to avoid possible blocking. + * Only update if we're changing anything to avoid possible + * blocking. */ - - if (stateUpdated) { + if (ttyPtr->stateUpdated) { SETIOSTATE(fd, &iostate); } } @@ -1525,66 +1753,71 @@ TtyInit( * Open an file based channel on Unix systems. * * Results: - * The new channel or NULL. If NULL, the output argument errorCodePtr is - * set to a POSIX error and an error message is left in the interp's - * result if interp is not NULL. + * The new channel or NULL. If NULL, the output argument + * errorCodePtr is set to a POSIX error and an error message is + * left in the interp's result if interp is not NULL. * * Side effects: - * May open the channel and may cause creation of a file on the file - * system. + * May open the channel and may cause creation of a file on the + * file system. * *---------------------------------------------------------------------- */ Tcl_Channel -TclpOpenFileChannel( - Tcl_Interp *interp, /* Interpreter for error reporting; can be - * NULL. */ - Tcl_Obj *pathPtr, /* Name of file to open. */ - int mode, /* POSIX open mode. */ - int permissions) /* If the open involves creating a file, with - * what modes to create it? */ +TclpOpenFileChannel(interp, pathPtr, mode, permissions) + Tcl_Interp *interp; /* Interpreter for error reporting; + * can be NULL. */ + Tcl_Obj *pathPtr; /* Name of file to open. */ + int mode; /* POSIX open mode. */ + int permissions; /* If the open involves creating a + * file, with what modes to create + * it? */ { int fd, channelPermissions; FileState *fsPtr; - const char *native, *translation; + CONST char *native, *translation; char channelName[16 + TCL_INTEGER_SPACE]; - const Tcl_ChannelType *channelTypePtr; + Tcl_ChannelType *channelTypePtr; +#ifdef SUPPORTS_TTY + int ctl_tty; +#endif /* SUPPORTS_TTY */ +#ifdef DEPRECATED + ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); +#endif /* DEPRECATED */ switch (mode & (O_RDONLY | O_WRONLY | O_RDWR)) { - case O_RDONLY: - channelPermissions = TCL_READABLE; - break; - case O_WRONLY: - channelPermissions = TCL_WRITABLE; - break; - case O_RDWR: - channelPermissions = (TCL_READABLE | TCL_WRITABLE); - break; - default: - /* - * This may occurr if modeString was "", for example. - */ - - Tcl_Panic("TclpOpenFileChannel: invalid mode value"); - return NULL; + case O_RDONLY: + channelPermissions = TCL_READABLE; + break; + case O_WRONLY: + channelPermissions = TCL_WRITABLE; + break; + case O_RDWR: + channelPermissions = (TCL_READABLE | TCL_WRITABLE); + break; + default: + /* + * This may occurr if modeString was "", for example. + */ + panic("TclpOpenFileChannel: invalid mode value"); + return NULL; } native = Tcl_FSGetNativePath(pathPtr); if (native == NULL) { return NULL; } - -#ifdef DJGPP - SET_BITS(mode, O_BINARY); -#endif - fd = TclOSopen(native, mode, permissions); +#ifdef SUPPORTS_TTY + ctl_tty = (strcmp (native, "/dev/tty") == 0); +#endif /* SUPPORTS_TTY */ if (fd < 0) { - if (interp != NULL) { - Tcl_AppendResult(interp, "couldn't open \"", TclGetString(pathPtr), - "\": ", Tcl_PosixError(interp), NULL); + if (interp != (Tcl_Interp *) NULL) { + Tcl_AppendResult(interp, "couldn't open \"", + Tcl_GetString(pathPtr), "\": ", + Tcl_PosixError(interp), (char *) NULL); } return NULL; } @@ -1599,45 +1832,48 @@ TclpOpenFileChannel( sprintf(channelName, "file%d", fd); #ifdef SUPPORTS_TTY - if (strcmp(native, "/dev/tty") != 0 && isatty(fd)) { + if (!ctl_tty && isatty(fd)) { /* - * Initialize the serial port to a set of sane parameters. Especially - * important if the remote device is set to echo and the serial port - * driver was also set to echo -- as soon as a char were sent to the - * serial port, the remote device would echo it, then the serial - * driver would echo it back to the device, etc. - * - * Note that we do not do this if we're dealing with /dev/tty itself, - * as that tends to cause Bad Things To Happen when you're working - * interactively. Strictly a better check would be to see if the FD - * being set up is a device and has the same major/minor as the - * initial std FDs (beware reopening!) but that's nearly as messy. + * Initialize the serial port to a set of sane parameters. + * Especially important if the remote device is set to echo and + * the serial port driver was also set to echo -- as soon as a char + * were sent to the serial port, the remote device would echo it, + * then the serial driver would echo it back to the device, etc. */ translation = "auto crlf"; channelTypePtr = &ttyChannelType; fsPtr = TtyInit(fd, 1); - } else + } else #endif /* SUPPORTS_TTY */ { translation = NULL; channelTypePtr = &fileChannelType; - fsPtr = ckalloc(sizeof(FileState)); + fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); } +#ifdef DEPRECATED + if (channelTypePtr == &fileChannelType) { + /* TIP #218. Removed the code inserting the new structure + * into the global list. This is now handled in the thread + * action callbacks, and only there. + */ + fsPtr->nextPtr = NULL; + } +#endif /* DEPRECATED */ fsPtr->validMask = channelPermissions | TCL_EXCEPTION; fsPtr->fd = fd; fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, - fsPtr, channelPermissions); + (ClientData) fsPtr, channelPermissions); if (translation != NULL) { /* - * Gotcha. Most modems need a "\r" at the end of the command sequence. - * If you just send "at\n", the modem will not respond with "OK" - * because it never got a "\r" to actually invoke the command. So, by - * default, newlines are translated to "\r\n" on output to avoid "bug" - * reports that the serial port isn't working. + * Gotcha. Most modems need a "\r" at the end of the command + * sequence. If you just send "at\n", the modem will not respond + * with "OK" because it never got a "\r" to actually invoke the + * command. So, by default, newlines are translated to "\r\n" on + * output to avoid "bug" reports that the serial port isn't working. */ if (Tcl_SetChannelOption(interp, fsPtr->channel, "-translation", @@ -1667,15 +1903,18 @@ TclpOpenFileChannel( */ Tcl_Channel -Tcl_MakeFileChannel( - ClientData handle, /* OS level handle. */ - int mode) /* ORed combination of TCL_READABLE and +Tcl_MakeFileChannel(handle, mode) + ClientData handle; /* OS level handle. */ + int mode; /* ORed combination of TCL_READABLE and * TCL_WRITABLE to indicate file mode. */ { FileState *fsPtr; char channelName[16 + TCL_INTEGER_SPACE]; - int fd = PTR2INT(handle); - const Tcl_ChannelType *channelTypePtr; + int fd = (int) handle; + Tcl_ChannelType *channelTypePtr; +#ifdef DEPRECATED + ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); +#endif /* DEPRECATED */ struct sockaddr sockaddr; socklen_t sockaddrLen = sizeof(sockaddr); @@ -1683,6 +1922,21 @@ Tcl_MakeFileChannel( return NULL; } + + /* + * Look to see if a channel with this fd and the same mode already exists. + * If the fd is used, but the mode doesn't match, return NULL. + */ + +#ifdef DEPRECATED + for (fsPtr = tsdPtr->firstFilePtr; fsPtr != NULL; fsPtr = fsPtr->nextPtr) { + if (fsPtr->fd == fd) { + return ((mode|TCL_EXCEPTION) == fsPtr->validMask) ? + fsPtr->channel : NULL; + } + } +#endif /* DEPRECATED */ + sockaddr.sa_family = AF_UNSPEC; #ifdef SUPPORTS_TTY @@ -1692,20 +1946,26 @@ Tcl_MakeFileChannel( sprintf(channelName, "serial%d", fd); } else #endif /* SUPPORTS_TTY */ - if ((getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0) - && (sockaddrLen > 0) - && (sockaddr.sa_family == AF_INET || sockaddr.sa_family == AF_INET6)) { - return TclpMakeTcpClientChannelMode(INT2PTR(fd), mode); + if (getsockname(fd, (struct sockaddr *)&sockaddr, &sockaddrLen) == 0 + && sockaddrLen > 0 + && sockaddr.sa_family == AF_INET) { + return MakeTcpClientChannelMode((ClientData) fd, mode); } else { - channelTypePtr = &fileChannelType; - fsPtr = ckalloc(sizeof(FileState)); - sprintf(channelName, "file%d", fd); + channelTypePtr = &fileChannelType; + fsPtr = (FileState *) ckalloc((unsigned) sizeof(FileState)); + sprintf(channelName, "file%d", fd); } +#ifdef DEPRECATED + if (channelTypePtr == &fileChannelType) { + fsPtr->nextPtr = tsdPtr->firstFilePtr; + tsdPtr->firstFilePtr = fsPtr; + } +#endif /* DEPRECATED */ fsPtr->fd = fd; fsPtr->validMask = mode | TCL_EXCEPTION; fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName, - fsPtr, mode); + (ClientData) fsPtr, mode); return fsPtr->channel; } @@ -1713,73 +1973,1077 @@ Tcl_MakeFileChannel( /* *---------------------------------------------------------------------- * + * TcpBlockModeProc -- + * + * This procedure is invoked by the generic IO level to set blocking + * and nonblocking mode on a TCP socket based channel. + * + * Results: + * 0 if successful, errno when failed. + * + * Side effects: + * Sets the device into blocking or nonblocking mode. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +static int +TcpBlockModeProc(instanceData, mode) + ClientData instanceData; /* Socket state. */ + int mode; /* The mode to set. Can be one of + * TCL_MODE_BLOCKING or + * TCL_MODE_NONBLOCKING. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + int setting; + +#ifndef USE_FIONBIO + setting = fcntl(statePtr->fd, F_GETFL); + if (mode == TCL_MODE_BLOCKING) { + statePtr->flags &= (~(TCP_ASYNC_SOCKET)); + setting &= (~(O_NONBLOCK)); + } else { + statePtr->flags |= TCP_ASYNC_SOCKET; + setting |= O_NONBLOCK; + } + if (fcntl(statePtr->fd, F_SETFL, setting) < 0) { + return errno; + } +#else /* USE_FIONBIO */ + if (mode == TCL_MODE_BLOCKING) { + statePtr->flags &= (~(TCP_ASYNC_SOCKET)); + setting = 0; + if (ioctl(statePtr->fd, (int) FIONBIO, &setting) == -1) { + return errno; + } + } else { + statePtr->flags |= TCP_ASYNC_SOCKET; + setting = 1; + if (ioctl(statePtr->fd, (int) FIONBIO, &setting) == -1) { + return errno; + } + } +#endif /* !USE_FIONBIO */ + + return 0; +} + +/* + *---------------------------------------------------------------------- + * + * WaitForConnect -- + * + * Waits for a connection on an asynchronously opened socket to + * be completed. + * + * Results: + * None. + * + * Side effects: + * The socket is connected after this function returns. + * + *---------------------------------------------------------------------- + */ + +static int +WaitForConnect(statePtr, errorCodePtr) + TcpState *statePtr; /* State of the socket. */ + int *errorCodePtr; /* Where to store errors? */ +{ + int timeOut; /* How long to wait. */ + int state; /* Of calling TclWaitForFile. */ + int flags; /* fcntl flags for the socket. */ + + /* + * If an asynchronous connect is in progress, attempt to wait for it + * to complete before reading. + */ + + if (statePtr->flags & TCP_ASYNC_CONNECT) { + if (statePtr->flags & TCP_ASYNC_SOCKET) { + timeOut = 0; + } else { + timeOut = -1; + } + errno = 0; + state = TclUnixWaitForFile(statePtr->fd, + TCL_WRITABLE | TCL_EXCEPTION, timeOut); + if (!(statePtr->flags & TCP_ASYNC_SOCKET)) { +#ifndef USE_FIONBIO + flags = fcntl(statePtr->fd, F_GETFL); + flags &= (~(O_NONBLOCK)); + (void) fcntl(statePtr->fd, F_SETFL, flags); +#else /* USE_FIONBIO */ + flags = 0; + (void) ioctl(statePtr->fd, FIONBIO, &flags); +#endif /* !USE_FIONBIO */ + } + if (state & TCL_EXCEPTION) { + return -1; + } + if (state & TCL_WRITABLE) { + statePtr->flags &= (~(TCP_ASYNC_CONNECT)); + } else if (timeOut == 0) { + *errorCodePtr = errno = EWOULDBLOCK; + return -1; + } + } + return 0; +} + +/* + *---------------------------------------------------------------------- + * + * TcpInputProc -- + * + * This procedure is invoked by the generic IO level to read input + * from a TCP socket based channel. + * + * NOTE: We cannot share code with FilePipeInputProc because here + * we must use recv to obtain the input from the channel, not read. + * + * Results: + * The number of bytes read is returned or -1 on error. An output + * argument contains the POSIX error code on error, or zero if no + * error occurred. + * + * Side effects: + * Reads input from the input device of the channel. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +static int +TcpInputProc(instanceData, buf, bufSize, errorCodePtr) + ClientData instanceData; /* Socket state. */ + char *buf; /* Where to store data read. */ + int bufSize; /* How much space is available + * in the buffer? */ + int *errorCodePtr; /* Where to store error code. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + int bytesRead, state; + + *errorCodePtr = 0; + state = WaitForConnect(statePtr, errorCodePtr); + if (state != 0) { + return -1; + } + bytesRead = recv(statePtr->fd, buf, (size_t) bufSize, 0); + if (bytesRead > -1) { + return bytesRead; + } + if (errno == ECONNRESET) { + /* + * Turn ECONNRESET into a soft EOF condition. + */ + + return 0; + } + *errorCodePtr = errno; + return -1; +} + +/* + *---------------------------------------------------------------------- + * + * TcpOutputProc -- + * + * This procedure is invoked by the generic IO level to write output + * to a TCP socket based channel. + * + * NOTE: We cannot share code with FilePipeOutputProc because here + * we must use send, not write, to get reliable error reporting. + * + * Results: + * The number of bytes written is returned. An output argument is + * set to a POSIX error code if an error occurred, or zero. + * + * Side effects: + * Writes output on the output device of the channel. + * + *---------------------------------------------------------------------- + */ + +static int +TcpOutputProc(instanceData, buf, toWrite, errorCodePtr) + ClientData instanceData; /* Socket state. */ + CONST char *buf; /* The data buffer. */ + int toWrite; /* How many bytes to write? */ + int *errorCodePtr; /* Where to store error code. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + int written; + int state; /* Of waiting for connection. */ + + *errorCodePtr = 0; + state = WaitForConnect(statePtr, errorCodePtr); + if (state != 0) { + return -1; + } + written = send(statePtr->fd, buf, (size_t) toWrite, 0); + if (written > -1) { + return written; + } + *errorCodePtr = errno; + return -1; +} + +/* + *---------------------------------------------------------------------- + * + * TcpCloseProc -- + * + * This procedure is invoked by the generic IO level to perform + * channel-type-specific cleanup when a TCP socket based channel + * is closed. + * + * Results: + * 0 if successful, the value of errno if failed. + * + * Side effects: + * Closes the socket of the channel. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +static int +TcpCloseProc(instanceData, interp) + ClientData instanceData; /* The socket to close. */ + Tcl_Interp *interp; /* For error reporting - unused. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + int errorCode = 0; + + /* + * Delete a file handler that may be active for this socket if this + * is a server socket - the file handler was created automatically + * by Tcl as part of the mechanism to accept new client connections. + * Channel handlers are already deleted in the generic IO channel + * closing code that called this function, so we do not have to + * delete them here. + */ + + Tcl_DeleteFileHandler(statePtr->fd); + + if (close(statePtr->fd) < 0) { + errorCode = errno; + } + ckfree((char *) statePtr); + + return errorCode; +} + +/* + *---------------------------------------------------------------------- + * + * TcpGetOptionProc -- + * + * Computes an option value for a TCP socket based channel, or a + * list of all options and their values. + * + * Note: This code is based on code contributed by John Haxby. + * + * Results: + * A standard Tcl result. The value of the specified option or a + * list of all options and their values is returned in the + * supplied DString. Sets Error message if needed. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +static int +TcpGetOptionProc(instanceData, interp, optionName, dsPtr) + ClientData instanceData; /* Socket state. */ + Tcl_Interp *interp; /* For error reporting - can be NULL. */ + CONST char *optionName; /* Name of the option to + * retrieve the value for, or + * NULL to get all options and + * their values. */ + Tcl_DString *dsPtr; /* Where to store the computed + * value; initialized by caller. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + struct sockaddr_in sockname; + struct sockaddr_in peername; + struct hostent *hostEntPtr; + socklen_t size = sizeof(struct sockaddr_in); + size_t len = 0; + char buf[TCL_INTEGER_SPACE]; + + if (optionName != (char *) NULL) { + len = strlen(optionName); + } + + if ((len > 1) && (optionName[1] == 'e') && + (strncmp(optionName, "-error", len) == 0)) { + socklen_t optlen = sizeof(int); + int err, ret; + + ret = getsockopt(statePtr->fd, SOL_SOCKET, SO_ERROR, + (char *)&err, &optlen); + if (ret < 0) { + err = errno; + } + if (err != 0) { + Tcl_DStringAppend(dsPtr, Tcl_ErrnoMsg(err), -1); + } + return TCL_OK; + } + + if ((len == 0) || + ((len > 1) && (optionName[1] == 'p') && + (strncmp(optionName, "-peername", len) == 0))) { + if (getpeername(statePtr->fd, (struct sockaddr *) &peername, + &size) >= 0) { + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-peername"); + Tcl_DStringStartSublist(dsPtr); + } + Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); + hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ + (char *) &peername.sin_addr, + sizeof(peername.sin_addr), AF_INET); + if (hostEntPtr != (struct hostent *) NULL) { + Tcl_DString ds; + + Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); + Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); + Tcl_DStringFree(&ds); + } else { + Tcl_DStringAppendElement(dsPtr, inet_ntoa(peername.sin_addr)); + } + TclFormatInt(buf, ntohs(peername.sin_port)); + Tcl_DStringAppendElement(dsPtr, buf); + if (len == 0) { + Tcl_DStringEndSublist(dsPtr); + } else { + return TCL_OK; + } + } else { + /* + * getpeername failed - but if we were asked for all the options + * (len==0), don't flag an error at that point because it could + * be an fconfigure request on a server socket. (which have + * no peer). same must be done on win&mac. + */ + + if (len) { + if (interp) { + Tcl_AppendResult(interp, "can't get peername: ", + Tcl_PosixError(interp), (char *) NULL); + } + return TCL_ERROR; + } + } + } + + if ((len == 0) || + ((len > 1) && (optionName[1] == 's') && + (strncmp(optionName, "-sockname", len) == 0))) { + if (getsockname(statePtr->fd, (struct sockaddr *) &sockname, + &size) >= 0) { + if (len == 0) { + Tcl_DStringAppendElement(dsPtr, "-sockname"); + Tcl_DStringStartSublist(dsPtr); + } + Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); + if (sockname.sin_addr.s_addr == INADDR_ANY) { + /* + * We don't want to resolve INADDR_ANY; it can sometimes cause + * problems (and never has a name). + */ + + hostEntPtr = NULL; + } else { + hostEntPtr = TclpGetHostByAddr( /* INTL: Native. */ + (char *) &sockname.sin_addr, + sizeof(sockname.sin_addr), AF_INET); + } + if (hostEntPtr != (struct hostent *) NULL) { + Tcl_DString ds; + + Tcl_ExternalToUtfDString(NULL, hostEntPtr->h_name, -1, &ds); + Tcl_DStringAppendElement(dsPtr, Tcl_DStringValue(&ds)); + Tcl_DStringFree(&ds); + } else { + Tcl_DStringAppendElement(dsPtr, inet_ntoa(sockname.sin_addr)); + } + TclFormatInt(buf, ntohs(sockname.sin_port)); + Tcl_DStringAppendElement(dsPtr, buf); + if (len == 0) { + Tcl_DStringEndSublist(dsPtr); + } else { + return TCL_OK; + } + } else { + if (interp) { + Tcl_AppendResult(interp, "can't get sockname: ", + Tcl_PosixError(interp), (char *) NULL); + } + return TCL_ERROR; + } + } + + if (len > 0) { + return Tcl_BadChannelOption(interp, optionName, "peername sockname"); + } + + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * TcpWatchProc -- + * + * Initialize the notifier to watch the fd from this channel. + * + * Results: + * None. + * + * Side effects: + * Sets up the notifier so that a future event on the channel will + * be seen by Tcl. + * + *---------------------------------------------------------------------- + */ + +static void +TcpWatchProc(instanceData, mask) + ClientData instanceData; /* The socket state. */ + int mask; /* Events of interest; an OR-ed + * combination of TCL_READABLE, + * TCL_WRITABLE and TCL_EXCEPTION. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + + /* + * Make sure we don't mess with server sockets since they will never + * be readable or writable at the Tcl level. This keeps Tcl scripts + * from interfering with the -accept behavior. + */ + + if (!statePtr->acceptProc) { + if (mask) { + Tcl_CreateFileHandler(statePtr->fd, mask, + (Tcl_FileProc *) Tcl_NotifyChannel, + (ClientData) statePtr->channel); + } else { + Tcl_DeleteFileHandler(statePtr->fd); + } + } +} + +/* + *---------------------------------------------------------------------- + * + * TcpGetHandleProc -- + * + * Called from Tcl_GetChannelHandle to retrieve OS handles from inside + * a TCP socket based channel. + * + * Results: + * Returns TCL_OK with the fd in handlePtr, or TCL_ERROR if + * there is no handle for the specified direction. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +static int +TcpGetHandleProc(instanceData, direction, handlePtr) + ClientData instanceData; /* The socket state. */ + int direction; /* Not used. */ + ClientData *handlePtr; /* Where to store the handle. */ +{ + TcpState *statePtr = (TcpState *) instanceData; + + *handlePtr = (ClientData)statePtr->fd; + return TCL_OK; +} + +/* + *---------------------------------------------------------------------- + * + * CreateSocket -- + * + * This function opens a new socket in client or server mode + * and initializes the TcpState structure. + * + * Results: + * Returns a new TcpState, or NULL with an error in the interp's + * result, if interp is not NULL. + * + * Side effects: + * Opens a socket. + * + *---------------------------------------------------------------------- + */ + +static TcpState * +CreateSocket(interp, port, host, server, myaddr, myport, async) + Tcl_Interp *interp; /* For error reporting; can be NULL. */ + int port; /* Port number to open. */ + CONST char *host; /* Name of host on which to open port. + * NULL implies INADDR_ANY */ + int server; /* 1 if socket should be a server socket, + * else 0 for a client socket. */ + CONST char *myaddr; /* Optional client-side address */ + int myport; /* Optional client-side port */ + int async; /* If nonzero and creating a client socket, + * attempt to do an async connect. Otherwise + * do a synchronous connect or bind. */ +{ + int status, sock, asyncConnect, curState, origState; + struct sockaddr_in sockaddr; /* socket address */ + struct sockaddr_in mysockaddr; /* Socket address for client */ + TcpState *statePtr; + + sock = -1; + origState = 0; + if (! CreateSocketAddress(&sockaddr, host, port)) { + goto addressError; + } + if ((myaddr != NULL || myport != 0) && + ! CreateSocketAddress(&mysockaddr, myaddr, myport)) { + goto addressError; + } + + sock = socket(AF_INET, SOCK_STREAM, 0); + if (sock < 0) { + goto addressError; + } + + /* + * Set the close-on-exec flag so that the socket will not get + * inherited by child processes. + */ + + fcntl(sock, F_SETFD, FD_CLOEXEC); + + /* + * Set kernel space buffering + */ + + TclSockMinimumBuffers(sock, SOCKET_BUFSIZE); + + asyncConnect = 0; + status = 0; + if (server) { + /* + * Set up to reuse server addresses automatically and bind to the + * specified port. + */ + + status = 1; + (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &status, + sizeof(status)); + status = bind(sock, (struct sockaddr *) &sockaddr, + sizeof(struct sockaddr)); + if (status != -1) { + status = listen(sock, SOMAXCONN); + } + } else { + if (myaddr != NULL || myport != 0) { + curState = 1; + (void) setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, + (char *) &curState, sizeof(curState)); + status = bind(sock, (struct sockaddr *) &mysockaddr, + sizeof(struct sockaddr)); + if (status < 0) { + goto bindError; + } + } + + /* + * Attempt to connect. The connect may fail at present with an + * EINPROGRESS but at a later time it will complete. The caller + * will set up a file handler on the socket if she is interested in + * being informed when the connect completes. + */ + + if (async) { +#ifndef USE_FIONBIO + origState = fcntl(sock, F_GETFL); + curState = origState | O_NONBLOCK; + status = fcntl(sock, F_SETFL, curState); +#else /* USE_FIONBIO */ + curState = 1; + status = ioctl(sock, FIONBIO, &curState); +#endif /* !USE_FIONBIO */ + } else { + status = 0; + } + if (status > -1) { + status = connect(sock, (struct sockaddr *) &sockaddr, + sizeof(sockaddr)); + if (status < 0) { + if (errno == EINPROGRESS) { + asyncConnect = 1; + status = 0; + } + } else { + /* + * Here we are if the connect succeeds. In case of an + * asynchronous connect we have to reset the channel to + * blocking mode. This appears to happen not very often, + * but e.g. on a HP 9000/800 under HP-UX B.11.00 we enter + * this stage. [Bug: 4388] + */ + if (async) { +#ifndef USE_FIONBIO + origState = fcntl(sock, F_GETFL); + curState = origState & ~(O_NONBLOCK); + status = fcntl(sock, F_SETFL, curState); +#else /* USE_FIONBIO */ + curState = 0; + status = ioctl(sock, FIONBIO, &curState); +#endif /* !USE_FIONBIO */ + } + } + } + } + +bindError: + if (status < 0) { + if (interp != NULL) { + Tcl_AppendResult(interp, "couldn't open socket: ", + Tcl_PosixError(interp), (char *) NULL); + } + if (sock != -1) { + close(sock); + } + return NULL; + } + + /* + * Allocate a new TcpState for this socket. + */ + + statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); + statePtr->flags = 0; + if (asyncConnect) { + statePtr->flags = TCP_ASYNC_CONNECT; + } + statePtr->fd = sock; + + return statePtr; + +addressError: + if (sock != -1) { + close(sock); + } + if (interp != NULL) { + Tcl_AppendResult(interp, "couldn't open socket: ", + Tcl_PosixError(interp), (char *) NULL); + } + return NULL; +} + +/* + *---------------------------------------------------------------------- + * + * CreateSocketAddress -- + * + * This function initializes a sockaddr structure for a host and port. + * + * Results: + * 1 if the host was valid, 0 if the host could not be converted to + * an IP address. + * + * Side effects: + * Fills in the *sockaddrPtr structure. + * + *---------------------------------------------------------------------- + */ + +static int +CreateSocketAddress(sockaddrPtr, host, port) + struct sockaddr_in *sockaddrPtr; /* Socket address */ + CONST char *host; /* Host. NULL implies INADDR_ANY */ + int port; /* Port number */ +{ + struct hostent *hostent; /* Host database entry */ + struct in_addr addr; /* For 64/32 bit madness */ + + (void) memset((VOID *) sockaddrPtr, '\0', sizeof(struct sockaddr_in)); + sockaddrPtr->sin_family = AF_INET; + sockaddrPtr->sin_port = htons((unsigned short) (port & 0xFFFF)); + if (host == NULL) { + addr.s_addr = INADDR_ANY; + } else { + Tcl_DString ds; + CONST char *native; + + if (host == NULL) { + native = NULL; + } else { + native = Tcl_UtfToExternalDString(NULL, host, -1, &ds); + } + addr.s_addr = inet_addr(native); /* INTL: Native. */ + /* + * This is 0xFFFFFFFF to ensure that it compares as a 32bit -1 + * on either 32 or 64 bits systems. + */ + if (addr.s_addr == 0xFFFFFFFF) { + hostent = TclpGetHostByName(native); /* INTL: Native. */ + if (hostent != (struct hostent *) NULL) { + memcpy((VOID *) &addr, + (VOID *) hostent->h_addr_list[0], + (size_t) hostent->h_length); + } else { +#ifdef EHOSTUNREACH + errno = EHOSTUNREACH; +#else /* !EHOSTUNREACH */ +#ifdef ENXIO + errno = ENXIO; +#endif /* ENXIO */ +#endif /* EHOSTUNREACH */ + if (native != NULL) { + Tcl_DStringFree(&ds); + } + return 0; /* error */ + } + } + if (native != NULL) { + Tcl_DStringFree(&ds); + } + } + + /* + * NOTE: On 64 bit machines the assignment below is rumored to not + * do the right thing. Please report errors related to this if you + * observe incorrect behavior on 64 bit machines such as DEC Alphas. + * Should we modify this code to do an explicit memcpy? + */ + + sockaddrPtr->sin_addr.s_addr = addr.s_addr; + return 1; /* Success. */ +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_OpenTcpClient -- + * + * Opens a TCP client socket and creates a channel around it. + * + * Results: + * The channel or NULL if failed. An error message is returned + * in the interpreter on failure. + * + * Side effects: + * Opens a client socket and creates a new channel. + * + *---------------------------------------------------------------------- + */ + +Tcl_Channel +Tcl_OpenTcpClient(interp, port, host, myaddr, myport, async) + Tcl_Interp *interp; /* For error reporting; can be NULL. */ + int port; /* Port number to open. */ + CONST char *host; /* Host on which to open port. */ + CONST char *myaddr; /* Client-side address */ + int myport; /* Client-side port */ + int async; /* If nonzero, attempt to do an + * asynchronous connect. Otherwise + * we do a blocking connect. */ +{ + TcpState *statePtr; + char channelName[16 + TCL_INTEGER_SPACE]; + + /* + * Create a new client socket and wrap it in a channel. + */ + + statePtr = CreateSocket(interp, port, host, 0, myaddr, myport, async); + if (statePtr == NULL) { + return NULL; + } + + statePtr->acceptProc = NULL; + statePtr->acceptProcData = (ClientData) NULL; + + sprintf(channelName, "sock%d", statePtr->fd); + + statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, + (ClientData) statePtr, (TCL_READABLE | TCL_WRITABLE)); + if (Tcl_SetChannelOption(interp, statePtr->channel, "-translation", + "auto crlf") == TCL_ERROR) { + Tcl_Close((Tcl_Interp *) NULL, statePtr->channel); + return NULL; + } + return statePtr->channel; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_MakeTcpClientChannel -- + * + * Creates a Tcl_Channel from an existing client TCP socket. + * + * Results: + * The Tcl_Channel wrapped around the preexisting TCP socket. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +Tcl_Channel +Tcl_MakeTcpClientChannel(sock) + ClientData sock; /* The socket to wrap up into a channel. */ +{ + return MakeTcpClientChannelMode(sock, (TCL_READABLE | TCL_WRITABLE)); +} + +/* + *---------------------------------------------------------------------- + * + * MakeTcpClientChannelMode -- + * + * Creates a Tcl_Channel from an existing client TCP socket + * with given mode. + * + * Results: + * The Tcl_Channel wrapped around the preexisting TCP socket. + * + * Side effects: + * None. + * + *---------------------------------------------------------------------- + */ + +static Tcl_Channel +MakeTcpClientChannelMode(sock, mode) + ClientData sock; /* The socket to wrap up into a channel. */ + int mode; /* ORed combination of TCL_READABLE and + * TCL_WRITABLE to indicate file mode. */ +{ + TcpState *statePtr; + char channelName[16 + TCL_INTEGER_SPACE]; + + statePtr = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); + statePtr->fd = (int) sock; + statePtr->flags = 0; + statePtr->acceptProc = NULL; + statePtr->acceptProcData = (ClientData) NULL; + + sprintf(channelName, "sock%d", statePtr->fd); + + statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, + (ClientData) statePtr, mode); + if (Tcl_SetChannelOption((Tcl_Interp *) NULL, statePtr->channel, + "-translation", "auto crlf") == TCL_ERROR) { + Tcl_Close((Tcl_Interp *) NULL, statePtr->channel); + return NULL; + } + return statePtr->channel; +} + +/* + *---------------------------------------------------------------------- + * + * Tcl_OpenTcpServer -- + * + * Opens a TCP server socket and creates a channel around it. + * + * Results: + * The channel or NULL if failed. If an error occurred, an + * error message is left in the interp's result if interp is + * not NULL. + * + * Side effects: + * Opens a server socket and creates a new channel. + * + *---------------------------------------------------------------------- + */ + +Tcl_Channel +Tcl_OpenTcpServer(interp, port, myHost, acceptProc, acceptProcData) + Tcl_Interp *interp; /* For error reporting - may be + * NULL. */ + int port; /* Port number to open. */ + CONST char *myHost; /* Name of local host. */ + Tcl_TcpAcceptProc *acceptProc; /* Callback for accepting connections + * from new clients. */ + ClientData acceptProcData; /* Data for the callback. */ +{ + TcpState *statePtr; + char channelName[16 + TCL_INTEGER_SPACE]; + + /* + * Create a new client socket and wrap it in a channel. + */ + + statePtr = CreateSocket(interp, port, myHost, 1, NULL, 0, 0); + if (statePtr == NULL) { + return NULL; + } + + statePtr->acceptProc = acceptProc; + statePtr->acceptProcData = acceptProcData; + + /* + * Set up the callback mechanism for accepting connections + * from new clients. + */ + + Tcl_CreateFileHandler(statePtr->fd, TCL_READABLE, TcpAccept, + (ClientData) statePtr); + sprintf(channelName, "sock%d", statePtr->fd); + statePtr->channel = Tcl_CreateChannel(&tcpChannelType, channelName, + (ClientData) statePtr, 0); + return statePtr->channel; +} + +/* + *---------------------------------------------------------------------- + * + * TcpAccept -- + * Accept a TCP socket connection. This is called by the event loop. + * + * Results: + * None. + * + * Side effects: + * Creates a new connection socket. Calls the registered callback + * for the connection acceptance mechanism. + * + *---------------------------------------------------------------------- + */ + + /* ARGSUSED */ +static void +TcpAccept(data, mask) + ClientData data; /* Callback token. */ + int mask; /* Not used. */ +{ + TcpState *sockState; /* Client data of server socket. */ + int newsock; /* The new client socket */ + TcpState *newSockState; /* State for new socket. */ + struct sockaddr_in addr; /* The remote address */ + socklen_t len; /* For accept interface */ + char channelName[16 + TCL_INTEGER_SPACE]; + + sockState = (TcpState *) data; + + len = sizeof(struct sockaddr_in); + newsock = accept(sockState->fd, (struct sockaddr *) &addr, &len); + if (newsock < 0) { + return; + } + + /* + * Set close-on-exec flag to prevent the newly accepted socket from + * being inherited by child processes. + */ + + (void) fcntl(newsock, F_SETFD, FD_CLOEXEC); + + newSockState = (TcpState *) ckalloc((unsigned) sizeof(TcpState)); + + newSockState->flags = 0; + newSockState->fd = newsock; + newSockState->acceptProc = NULL; + newSockState->acceptProcData = NULL; + + sprintf(channelName, "sock%d", newsock); + newSockState->channel = Tcl_CreateChannel(&tcpChannelType, channelName, + (ClientData) newSockState, (TCL_READABLE | TCL_WRITABLE)); + + Tcl_SetChannelOption(NULL, newSockState->channel, "-translation", + "auto crlf"); + + if (sockState->acceptProc != NULL) { + (*sockState->acceptProc)(sockState->acceptProcData, + newSockState->channel, inet_ntoa(addr.sin_addr), + ntohs(addr.sin_port)); + } +} + +/* + *---------------------------------------------------------------------- + * * TclpGetDefaultStdChannel -- * - * Creates channels for standard input, standard output or standard error - * output if they do not already exist. + * Creates channels for standard input, standard output or standard + * error output if they do not already exist. * * Results: * Returns the specified default standard channel, or NULL. * * Side effects: - * May cause the creation of a standard channel and the underlying file. + * May cause the creation of a standard channel and the underlying + * file. * *---------------------------------------------------------------------- */ Tcl_Channel -TclpGetDefaultStdChannel( - int type) /* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */ +TclpGetDefaultStdChannel(type) + int type; /* One of TCL_STDIN, TCL_STDOUT, TCL_STDERR. */ { Tcl_Channel channel = NULL; int fd = 0; /* Initializations needed to prevent */ int mode = 0; /* compiler warning (used before set). */ - const char *bufMode = NULL; + char *bufMode = NULL; /* * Some #def's to make the code a little clearer! */ - #define ZERO_OFFSET ((Tcl_SeekOffset) 0) #define ERROR_OFFSET ((Tcl_SeekOffset) -1) switch (type) { - case TCL_STDIN: - if ((TclOSseek(0, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) - && (errno == EBADF)) { - return NULL; - } - fd = 0; - mode = TCL_READABLE; - bufMode = "line"; - break; - case TCL_STDOUT: - if ((TclOSseek(1, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) - && (errno == EBADF)) { - return NULL; - } - fd = 1; - mode = TCL_WRITABLE; - bufMode = "line"; - break; - case TCL_STDERR: - if ((TclOSseek(2, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) - && (errno == EBADF)) { - return NULL; - } - fd = 2; - mode = TCL_WRITABLE; - bufMode = "none"; - break; - default: - Tcl_Panic("TclGetDefaultStdChannel: Unexpected channel type"); - break; + case TCL_STDIN: + if ((TclOSseek(0, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) + && (errno == EBADF)) { + return (Tcl_Channel) NULL; + } + fd = 0; + mode = TCL_READABLE; + bufMode = "line"; + break; + case TCL_STDOUT: + if ((TclOSseek(1, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) + && (errno == EBADF)) { + return (Tcl_Channel) NULL; + } + fd = 1; + mode = TCL_WRITABLE; + bufMode = "line"; + break; + case TCL_STDERR: + if ((TclOSseek(2, ZERO_OFFSET, SEEK_CUR) == ERROR_OFFSET) + && (errno == EBADF)) { + return (Tcl_Channel) NULL; + } + fd = 2; + mode = TCL_WRITABLE; + bufMode = "none"; + break; + default: + panic("TclGetDefaultStdChannel: Unexpected channel type"); + break; } #undef ZERO_OFFSET #undef ERROR_OFFSET - channel = Tcl_MakeFileChannel(INT2PTR(fd), mode); + channel = Tcl_MakeFileChannel((ClientData) fd, mode); if (channel == NULL) { return NULL; } @@ -1802,16 +3066,16 @@ TclpGetDefaultStdChannel( * * Tcl_GetOpenFile -- * - * Given a name of a channel registered in the given interpreter, returns - * a FILE * for it. + * Given a name of a channel registered in the given interpreter, + * returns a FILE * for it. * * Results: * A standard Tcl result. If the channel is registered in the given - * interpreter and it is managed by the "file" channel driver, and it is - * open for the requested mode, then the output parameter filePtr is set - * to a FILE * for the underlying file. On error, the filePtr is not set, - * TCL_ERROR is returned and an error message is left in the interp's - * result. + * interpreter and it is managed by the "file" channel driver, and + * it is open for the requested mode, then the output parameter + * filePtr is set to a FILE * for the underlying file. On error, the + * filePtr is not set, TCL_ERROR is returned and an error message is + * left in the interp's result. * * Side effects: * May invoke fdopen to create the FILE * for the requested file. @@ -1820,39 +3084,36 @@ TclpGetDefaultStdChannel( */ int -Tcl_GetOpenFile( - Tcl_Interp *interp, /* Interpreter in which to find file. */ - const char *chanID, /* String that identifies file. */ - int forWriting, /* 1 means the file is going to be used for - * writing, 0 means for reading. */ - int checkUsage, /* 1 means verify that the file was opened in - * a mode that allows the access specified by - * "forWriting". Ignored, we always check that - * the channel is open for the requested - * mode. */ - ClientData *filePtr) /* Store pointer to FILE structure here. */ +Tcl_GetOpenFile(interp, string, forWriting, checkUsage, filePtr) + Tcl_Interp *interp; /* Interpreter in which to find file. */ + CONST char *string; /* String that identifies file. */ + int forWriting; /* 1 means the file is going to be used + * for writing, 0 means for reading. */ + int checkUsage; /* 1 means verify that the file was opened + * in a mode that allows the access specified + * by "forWriting". Ignored, we always + * check that the channel is open for the + * requested mode. */ + ClientData *filePtr; /* Store pointer to FILE structure here. */ { Tcl_Channel chan; - int chanMode, fd; - const Tcl_ChannelType *chanTypePtr; + int chanMode; + Tcl_ChannelType *chanTypePtr; ClientData data; + int fd; FILE *f; - chan = Tcl_GetChannel(interp, chanID, &chanMode); - if (chan == NULL) { + chan = Tcl_GetChannel(interp, string, &chanMode); + if (chan == (Tcl_Channel) NULL) { return TCL_ERROR; } if ((forWriting) && ((chanMode & TCL_WRITABLE) == 0)) { - Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for writing", - NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_WRITABLE", - NULL); + Tcl_AppendResult(interp, + "\"", string, "\" wasn't opened for writing", (char *) NULL); return TCL_ERROR; - } else if ((!forWriting) && ((chanMode & TCL_READABLE) == 0)) { - Tcl_AppendResult(interp, "\"", chanID, "\" wasn't opened for reading", - NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NOT_READABLE", - NULL); + } else if ((!(forWriting)) && ((chanMode & TCL_READABLE) == 0)) { + Tcl_AppendResult(interp, + "\"", string, "\" wasn't opened for reading", (char *) NULL); return TCL_ERROR; } @@ -1867,56 +3128,52 @@ Tcl_GetOpenFile( #ifdef SUPPORTS_TTY || (chanTypePtr == &ttyChannelType) #endif /* SUPPORTS_TTY */ - || (strcmp(chanTypePtr->typeName, "tcp") == 0) + || (chanTypePtr == &tcpChannelType) || (strcmp(chanTypePtr->typeName, "pipe") == 0)) { if (Tcl_GetChannelHandle(chan, - (forWriting ? TCL_WRITABLE : TCL_READABLE), &data) == TCL_OK) { - fd = PTR2INT(data); + (forWriting ? TCL_WRITABLE : TCL_READABLE), + (ClientData*) &data) == TCL_OK) { + fd = (int) data; /* * The call to fdopen below is probably dangerous, since it will - * truncate an existing file if the file is being opened for - * writing.... + * truncate an existing file if the file is being opened + * for writing.... */ f = fdopen(fd, (forWriting ? "w" : "r")); if (f == NULL) { - Tcl_AppendResult(interp, "cannot get a FILE * for \"", chanID, - "\"", NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", - "FILE_FAILURE", NULL); + Tcl_AppendResult(interp, "cannot get a FILE * for \"", string, + "\"", (char *) NULL); return TCL_ERROR; } - *filePtr = f; + *filePtr = (ClientData) f; return TCL_OK; } } - Tcl_AppendResult(interp, "\"", chanID, - "\" cannot be used to get a FILE *", NULL); - Tcl_SetErrorCode(interp, "TCL", "VALUE", "CHANNEL", "NO_DESCRIPTOR", - NULL); - return TCL_ERROR; + Tcl_AppendResult(interp, "\"", string, + "\" cannot be used to get a FILE *", (char *) NULL); + return TCL_ERROR; } -#ifndef HAVE_COREFOUNDATION /* Darwin/Mac OS X CoreFoundation notifier is - * in tclMacOSXNotify.c */ /* *---------------------------------------------------------------------- * * TclUnixWaitForFile -- * - * This function waits synchronously for a file to become readable or - * writable, with an optional timeout. + * This procedure waits synchronously for a file to become readable + * or writable, with an optional timeout. * * Results: * The return value is an OR'ed combination of TCL_READABLE, - * TCL_WRITABLE, and TCL_EXCEPTION, indicating the conditions that are - * present on file at the time of the return. This function will not - * return until either "timeout" milliseconds have elapsed or at least - * one of the conditions given by mask has occurred for file (a return - * value of 0 means that a timeout occurred). No normal events will be - * serviced during the execution of this function. + * TCL_WRITABLE, and TCL_EXCEPTION, indicating the conditions + * that are present on file at the time of the return. This + * procedure will not return until either "timeout" milliseconds + * have elapsed or at least one of the conditions given by mask + * has occurred for file (a return value of 0 means that a timeout + * occurred). No normal events will be serviced during the + * execution of this procedure. * * Side effects: * Time passes. @@ -1925,23 +3182,23 @@ Tcl_GetOpenFile( */ int -TclUnixWaitForFile( - int fd, /* Handle for file on which to wait. */ - int mask, /* What to wait for: OR'ed combination of +TclUnixWaitForFile(fd, mask, timeout) + int fd; /* Handle for file on which to wait. */ + int mask; /* What to wait for: OR'ed combination of * TCL_READABLE, TCL_WRITABLE, and * TCL_EXCEPTION. */ - int timeout) /* Maximum amount of time to wait for one of - * the conditions in mask to occur, in - * milliseconds. A value of 0 means don't wait - * at all, and a value of -1 means wait - * forever. */ + int timeout; /* Maximum amount of time to wait for one + * of the conditions in mask to occur, in + * milliseconds. A value of 0 means don't + * wait at all, and a value of -1 means + * wait forever. */ { Tcl_Time abortTime = {0, 0}, now; /* silence gcc 4 warning */ struct timeval blockTime, *timeoutPtr; int numFound, result = 0; fd_set readableMask; fd_set writableMask; - fd_set exceptionMask; + fd_set exceptionalMask; #ifndef _DARWIN_C_SOURCE /* @@ -1955,8 +3212,8 @@ TclUnixWaitForFile( #endif /* - * If there is a non-zero finite timeout, compute the time when we give - * up. + * If there is a non-zero finite timeout, compute the time when + * we give up. */ if (timeout > 0) { @@ -1982,11 +3239,11 @@ TclUnixWaitForFile( FD_ZERO(&readableMask); FD_ZERO(&writableMask); - FD_ZERO(&exceptionMask); + FD_ZERO(&exceptionalMask); /* - * Loop in a mini-event loop of our own, waiting for either the file to - * become ready or a timeout to occur. + * Loop in a mini-event loop of our own, waiting for either the + * file to become ready or a timeout to occur. */ while (1) { @@ -2007,14 +3264,14 @@ TclUnixWaitForFile( * Setup the select masks for the fd. */ - if (mask & TCL_READABLE) { + if (mask & TCL_READABLE) { FD_SET(fd, &readableMask); } - if (mask & TCL_WRITABLE) { + if (mask & TCL_WRITABLE) { FD_SET(fd, &writableMask); } if (mask & TCL_EXCEPTION) { - FD_SET(fd, &exceptionMask); + FD_SET(fd, &exceptionalMask); } /* @@ -2022,16 +3279,16 @@ TclUnixWaitForFile( */ numFound = select(fd + 1, &readableMask, &writableMask, - &exceptionMask, timeoutPtr); + &exceptionalMask, timeoutPtr); if (numFound == 1) { - if (FD_ISSET(fd, &readableMask)) { - SET_BITS(result, TCL_READABLE); + if (FD_ISSET(fd, &readableMask)) { + result |= TCL_READABLE; } - if (FD_ISSET(fd, &writableMask)) { - SET_BITS(result, TCL_WRITABLE); + if (FD_ISSET(fd, &writableMask)) { + result |= TCL_WRITABLE; } - if (FD_ISSET(fd, &exceptionMask)) { - SET_BITS(result, TCL_EXCEPTION); + if (FD_ISSET(fd, &exceptionalMask)) { + result |= TCL_EXCEPTION; } result &= mask; if (result) { @@ -2051,60 +3308,75 @@ TclUnixWaitForFile( Tcl_GetTime(&now); if ((abortTime.sec < now.sec) - || (abortTime.sec==now.sec && abortTime.usec<=now.usec)) { + || ((abortTime.sec == now.sec) + && (abortTime.usec <= now.usec))) { break; } } return result; } -#endif /* HAVE_COREFOUNDATION */ +#ifdef DEPRECATED /* *---------------------------------------------------------------------- * - * FileTruncateProc -- + * FileThreadActionProc -- * - * Truncates a file to a given length. + * Insert or remove any thread local refs to this channel. * * Results: - * 0 if the operation succeeded, and -1 if it failed (in which case - * *errorCodePtr will be set to errno). + * None. * * Side effects: - * The underlying file is potentially truncated. This can have a wide - * variety of side effects, including moving file pointers that point at - * places later in the file than the truncate point. + * Changes thread local list of valid channels. * *---------------------------------------------------------------------- */ -static int -FileTruncateProc( - ClientData instanceData, - Tcl_WideInt length) +static void +FileThreadActionProc (instanceData, action) + ClientData instanceData; + int action; { - FileState *fsPtr = instanceData; - int result; + ThreadSpecificData *tsdPtr = TCL_TSD_INIT(&dataKey); + FileState *fsPtr = (FileState *) instanceData; -#ifdef HAVE_TYPE_OFF64_T - /* - * We assume this goes with the type for now... - */ + if (action == TCL_CHANNEL_THREAD_INSERT) { + fsPtr->nextPtr = tsdPtr->firstFilePtr; + tsdPtr->firstFilePtr = fsPtr; + } else { + FileState **nextPtrPtr; + int removed = 0; + + for (nextPtrPtr = &(tsdPtr->firstFilePtr); (*nextPtrPtr) != NULL; + nextPtrPtr = &((*nextPtrPtr)->nextPtr)) { + if ((*nextPtrPtr) == fsPtr) { + (*nextPtrPtr) = fsPtr->nextPtr; + removed = 1; + break; + } + } - result = ftruncate64(fsPtr->fd, (off64_t) length); -#else - result = ftruncate(fsPtr->fd, (off_t) length); -#endif - if (result) { - return errno; + /* + * This could happen if the channel was created in one + * thread and then moved to another without updating + * the thread local data in each thread. + */ + + if (!removed) { + panic("file info ptr not on thread channel list"); + } } - return 0; } +#endif /* DEPRECATED */ /* * Local Variables: * mode: c * c-basic-offset: 4 * fill-column: 78 + * tab-width: 8 + * indent-tabs-mode: nil * End: */ + |