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-rw-r--r--unix/tclUnixChan.c76
1 files changed, 25 insertions, 51 deletions
diff --git a/unix/tclUnixChan.c b/unix/tclUnixChan.c
index 4c1cb05..3079c7e 100644
--- a/unix/tclUnixChan.c
+++ b/unix/tclUnixChan.c
@@ -73,16 +73,6 @@ typedef struct FileState {
#ifdef SUPPORTS_TTY
/*
- * The following structure describes per-instance state of a tty-based
- * channel.
- */
-
-typedef struct TtyState {
- FileState fs; /* Per-instance state of the file descriptor.
- * Must be the first field. */
-} TtyState;
-
-/*
* The following structure is used to set or get the serial port attributes in
* a platform-independant manner.
*/
@@ -130,7 +120,7 @@ static int TtyGetOptionProc(ClientData instanceData,
Tcl_DString *dsPtr);
static int TtyGetBaud(speed_t speed);
static speed_t TtyGetSpeed(int baud);
-static FileState * TtyInit(int fd, int initialize);
+static void TtyInit(int fd);
static void TtyModemStatusStr(int status, Tcl_DString *dsPtr);
static int TtyParseMode(Tcl_Interp *interp, const char *mode,
TtyAttrs *ttyPtr);
@@ -1282,53 +1272,38 @@ TtyParseMode(
*
* 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.
+ * located on the serial port.
*
* 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.
+ * All other modes can be simulated on top of this in Tcl.
*
*---------------------------------------------------------------------------
*/
-static FileState *
+static void
TtyInit(
- int fd, /* Open file descriptor for serial port to be
- * initialized. */
- int initialize)
+ int fd) /* Open file descriptor for serial port to be initialized. */
{
- TtyState *ttyPtr = ckalloc(sizeof(TtyState));
+ struct termios iostate;
+ tcgetattr(fd, &iostate);
- if (initialize) {
- struct termios iostate;
- tcgetattr(fd, &iostate);
-
- 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)
- {
- 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;
-
- tcsetattr(fd, TCSADRAIN, &iostate);
- }
+ 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)
+ {
+ 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;
+
+ tcsetattr(fd, TCSADRAIN, &iostate);
}
-
- return &ttyPtr->fs;
}
#endif /* SUPPORTS_TTY */
@@ -1432,15 +1407,15 @@ TclpOpenFileChannel(
translation = "auto crlf";
channelTypePtr = &ttyChannelType;
- fsPtr = TtyInit(fd, 1);
+ TtyInit(fd);
} else
#endif /* SUPPORTS_TTY */
{
translation = NULL;
channelTypePtr = &fileChannelType;
- fsPtr = ckalloc(sizeof(FileState));
}
+ fsPtr = ckalloc(sizeof(FileState));
fsPtr->validMask = channelPermissions | TCL_EXCEPTION;
fsPtr->fd = fd;
@@ -1503,7 +1478,6 @@ Tcl_MakeFileChannel(
#ifdef SUPPORTS_TTY
if (isatty(fd)) {
- fsPtr = TtyInit(fd, 0);
channelTypePtr = &ttyChannelType;
sprintf(channelName, "serial%d", fd);
} else
@@ -1514,10 +1488,10 @@ Tcl_MakeFileChannel(
return TclpMakeTcpClientChannelMode(INT2PTR(fd), mode);
} else {
channelTypePtr = &fileChannelType;
- fsPtr = ckalloc(sizeof(FileState));
sprintf(channelName, "file%d", fd);
}
+ fsPtr = ckalloc(sizeof(FileState));
fsPtr->fd = fd;
fsPtr->validMask = mode | TCL_EXCEPTION;
fsPtr->channel = Tcl_CreateChannel(channelTypePtr, channelName,