tclUnixTest.c Go to the documentation of this file. /* * tclUnixTest.c -- * * Contains platform specific test commands for the Unix platform. * * Copyright (c) 1996-1997 Sun Microsystems, Inc. * Copyright (c) 1998 by Scriptics Corporation. * * See the file "license.terms" for information on usage and redistribution of * this file, and for a DISCLAIMER OF ALL WARRANTIES. * * RCS: @(#) $Id: tclUnixTest.c,v 1.26 2007/04/20 06:11:00 kennykb Exp $ */ #include "tclInt.h" /* * The headers are needed for the testalarm command that verifies the use of * SA_RESTART in signal handlers. */ #include <signal.h> #include <sys/resource.h> /* * The following macros convert between TclFile's and fd's. The conversion * simple involves shifting fd's up by one to ensure that no valid fd is ever * the same as NULL. Note that this code is duplicated from tclUnixPipe.c */ #define MakeFile(fd) ((TclFile)INT2PTR(((int)(fd))+1)) #define GetFd(file) (PTR2INT(file)-1) /* * The stuff below is used to keep track of file handlers created and * exercised by the "testfilehandler" command. */ typedef struct Pipe { TclFile readFile; /* File handle for reading from the pipe. * NULL means pipe doesn't exist yet. */ TclFile writeFile; /* File handle for writing from the pipe. */ int readCount; /* Number of times the file handler for this * file has triggered and the file was * readable. */ int writeCount; /* Number of times the file handler for this * file has triggered and the file was * writable. */ } Pipe; #define MAX_PIPES 10 static Pipe testPipes[MAX_PIPES]; /* * The stuff below is used by the testalarm and testgotsig ommands. */ static char *gotsig = "0"; /* * Forward declarations of functions defined later in this file: */ static void TestFileHandlerProc(ClientData clientData, int mask); static int TestfilehandlerCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestfilewaitCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestfindexecutableCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestgetopenfileCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestgetdefencdirCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestsetdefencdirCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); int TclplatformtestInit(Tcl_Interp *interp); static int TestalarmCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static int TestgotsigCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv); static void AlarmHandler(int signum); static int TestchmodCmd(ClientData dummy, Tcl_Interp *interp, int argc, CONST char **argv);  /* *---------------------------------------------------------------------- * * TclplatformtestInit -- * * Defines commands that test platform specific functionality for Unix * platforms. * * Results: * A standard Tcl result. * * Side effects: * Defines new commands. * *---------------------------------------------------------------------- */ int TclplatformtestInit( Tcl_Interp *interp) /* Interpreter to add commands to. */ { Tcl_CreateCommand(interp, "testchmod", TestchmodCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testfilehandler", TestfilehandlerCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testfilewait", TestfilewaitCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testfindexecutable", TestfindexecutableCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testgetopenfile", TestgetopenfileCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testgetdefenc", TestgetdefencdirCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testsetdefenc", TestsetdefencdirCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testalarm", TestalarmCmd, (ClientData) 0, NULL); Tcl_CreateCommand(interp, "testgotsig", TestgotsigCmd, (ClientData) 0, NULL); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestfilehandlerCmd -- * * This function implements the "testfilehandler" command. It is used to * test Tcl_CreateFileHandler, Tcl_DeleteFileHandler, and TclWaitForFile. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestfilehandlerCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { Pipe *pipePtr; int i, mask, timeout; static int initialized = 0; char buffer[4000]; TclFile file; /* * NOTE: When we make this code work on Windows also, the following * variable needs to be made Unix-only. */ if (!initialized) { for (i = 0; i < MAX_PIPES; i++) { testPipes[i].readFile = NULL; } initialized = 1; } if (argc < 2) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " option ... \"", NULL); return TCL_ERROR; } pipePtr = NULL; if (argc >= 3) { if (Tcl_GetInt(interp, argv[2], &i) != TCL_OK) { return TCL_ERROR; } if (i >= MAX_PIPES) { Tcl_AppendResult(interp, "bad index ", argv[2], NULL); return TCL_ERROR; } pipePtr = &testPipes[i]; } if (strcmp(argv[1], "close") == 0) { for (i = 0; i < MAX_PIPES; i++) { if (testPipes[i].readFile != NULL) { TclpCloseFile(testPipes[i].readFile); testPipes[i].readFile = NULL; TclpCloseFile(testPipes[i].writeFile); testPipes[i].writeFile = NULL; } } } else if (strcmp(argv[1], "clear") == 0) { if (argc != 3) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " clear index\"", NULL); return TCL_ERROR; } pipePtr->readCount = pipePtr->writeCount = 0; } else if (strcmp(argv[1], "counts") == 0) { char buf[TCL_INTEGER_SPACE * 2]; if (argc != 3) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " counts index\"", NULL); return TCL_ERROR; } sprintf(buf, "%d %d", pipePtr->readCount, pipePtr->writeCount); Tcl_SetResult(interp, buf, TCL_VOLATILE); } else if (strcmp(argv[1], "create") == 0) { if (argc != 5) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " create index readMode writeMode\"", NULL); return TCL_ERROR; } if (pipePtr->readFile == NULL) { if (!TclpCreatePipe(&pipePtr->readFile, &pipePtr->writeFile)) { Tcl_AppendResult(interp, "couldn't open pipe: ", Tcl_PosixError(interp), NULL); return TCL_ERROR; } #ifdef O_NONBLOCK fcntl(GetFd(pipePtr->readFile), F_SETFL, O_NONBLOCK); fcntl(GetFd(pipePtr->writeFile), F_SETFL, O_NONBLOCK); #else Tcl_SetResult(interp, "can't make pipes non-blocking", TCL_STATIC); return TCL_ERROR; #endif } pipePtr->readCount = 0; pipePtr->writeCount = 0; if (strcmp(argv[3], "readable") == 0) { Tcl_CreateFileHandler(GetFd(pipePtr->readFile), TCL_READABLE, TestFileHandlerProc, (ClientData) pipePtr); } else if (strcmp(argv[3], "off") == 0) { Tcl_DeleteFileHandler(GetFd(pipePtr->readFile)); } else if (strcmp(argv[3], "disabled") == 0) { Tcl_CreateFileHandler(GetFd(pipePtr->readFile), 0, TestFileHandlerProc, (ClientData) pipePtr); } else { Tcl_AppendResult(interp, "bad read mode \"", argv[3], "\"", NULL); return TCL_ERROR; } if (strcmp(argv[4], "writable") == 0) { Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), TCL_WRITABLE, TestFileHandlerProc, (ClientData) pipePtr); } else if (strcmp(argv[4], "off") == 0) { Tcl_DeleteFileHandler(GetFd(pipePtr->writeFile)); } else if (strcmp(argv[4], "disabled") == 0) { Tcl_CreateFileHandler(GetFd(pipePtr->writeFile), 0, TestFileHandlerProc, (ClientData) pipePtr); } else { Tcl_AppendResult(interp, "bad read mode \"", argv[4], "\"", NULL); return TCL_ERROR; } } else if (strcmp(argv[1], "empty") == 0) { if (argc != 3) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " empty index\"", NULL); return TCL_ERROR; } while (read(GetFd(pipePtr->readFile), buffer, 4000) > 0) { /* Empty loop body. */ } } else if (strcmp(argv[1], "fill") == 0) { if (argc != 3) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " fill index\"", NULL); return TCL_ERROR; } memset(buffer, 'a', 4000); while (write(GetFd(pipePtr->writeFile), buffer, 4000) > 0) { /* Empty loop body. */ } } else if (strcmp(argv[1], "fillpartial") == 0) { char buf[TCL_INTEGER_SPACE]; if (argc != 3) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " fillpartial index\"", NULL); return TCL_ERROR; } memset(buffer, 'b', 10); TclFormatInt(buf, write(GetFd(pipePtr->writeFile), buffer, 10)); Tcl_SetResult(interp, buf, TCL_VOLATILE); } else if (strcmp(argv[1], "oneevent") == 0) { Tcl_DoOneEvent(TCL_FILE_EVENTS|TCL_DONT_WAIT); } else if (strcmp(argv[1], "wait") == 0) { if (argc != 5) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " wait index readable|writable timeout\"", NULL); return TCL_ERROR; } if (pipePtr->readFile == NULL) { Tcl_AppendResult(interp, "pipe ", argv[2], " doesn't exist", NULL); return TCL_ERROR; } if (strcmp(argv[3], "readable") == 0) { mask = TCL_READABLE; file = pipePtr->readFile; } else { mask = TCL_WRITABLE; file = pipePtr->writeFile; } if (Tcl_GetInt(interp, argv[4], &timeout) != TCL_OK) { return TCL_ERROR; } i = TclUnixWaitForFile(GetFd(file), mask, timeout); if (i & TCL_READABLE) { Tcl_AppendElement(interp, "readable"); } if (i & TCL_WRITABLE) { Tcl_AppendElement(interp, "writable"); } } else if (strcmp(argv[1], "windowevent") == 0) { Tcl_DoOneEvent(TCL_WINDOW_EVENTS|TCL_DONT_WAIT); } else { Tcl_AppendResult(interp, "bad option \"", argv[1], "\": must be close, clear, counts, create, empty, fill, " "fillpartial, oneevent, wait, or windowevent", NULL); return TCL_ERROR; } return TCL_OK; } static void TestFileHandlerProc( ClientData clientData, /* Points to a Pipe structure. */ int mask) /* Indicates which events happened: * TCL_READABLE or TCL_WRITABLE. */ { Pipe *pipePtr = (Pipe *) clientData; if (mask & TCL_READABLE) { pipePtr->readCount++; } if (mask & TCL_WRITABLE) { pipePtr->writeCount++; } }  /* *---------------------------------------------------------------------- * * TestfilewaitCmd -- * * This function implements the "testfilewait" command. It is used to * test TclUnixWaitForFile. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestfilewaitCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { int mask, result, timeout; Tcl_Channel channel; int fd; ClientData data; if (argc != 4) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " file readable|writable|both timeout\"", NULL); return TCL_ERROR; } channel = Tcl_GetChannel(interp, argv[1], NULL); if (channel == NULL) { return TCL_ERROR; } if (strcmp(argv[2], "readable") == 0) { mask = TCL_READABLE; } else if (strcmp(argv[2], "writable") == 0){ mask = TCL_WRITABLE; } else if (strcmp(argv[2], "both") == 0){ mask = TCL_WRITABLE|TCL_READABLE; } else { Tcl_AppendResult(interp, "bad argument \"", argv[2], "\": must be readable, writable, or both", NULL); return TCL_ERROR; } if (Tcl_GetChannelHandle(channel, (mask & TCL_READABLE) ? TCL_READABLE : TCL_WRITABLE, (ClientData*) &data) != TCL_OK) { Tcl_SetResult(interp, "couldn't get channel file", TCL_STATIC); return TCL_ERROR; } fd = PTR2INT(data); if (Tcl_GetInt(interp, argv[3], &timeout) != TCL_OK) { return TCL_ERROR; } result = TclUnixWaitForFile(fd, mask, timeout); if (result & TCL_READABLE) { Tcl_AppendElement(interp, "readable"); } if (result & TCL_WRITABLE) { Tcl_AppendElement(interp, "writable"); } return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestfindexecutableCmd -- * * This function implements the "testfindexecutable" command. It is used * to test TclpFindExecutable. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestfindexecutableCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { Tcl_Obj *saveName; if (argc != 2) { Tcl_AppendResult(interp, "wrong # arguments: should be \"", argv[0], " argv0\"", NULL); return TCL_ERROR; } saveName = TclGetObjNameOfExecutable(); Tcl_IncrRefCount(saveName); TclpFindExecutable(argv[1]); Tcl_SetObjResult(interp, TclGetObjNameOfExecutable()); TclSetObjNameOfExecutable(saveName, NULL); Tcl_DecrRefCount(saveName); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestgetopenfileCmd -- * * This function implements the "testgetopenfile" command. It is used to * get a FILE * value from a registered channel. * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestgetopenfileCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { ClientData filePtr; if (argc != 3) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " channelName forWriting\"", NULL); return TCL_ERROR; } if (Tcl_GetOpenFile(interp, argv[1], atoi(argv[2]), 1, &filePtr) == TCL_ERROR) { return TCL_ERROR; } if (filePtr == (ClientData) NULL) { Tcl_AppendResult(interp, "Tcl_GetOpenFile succeeded but FILE * NULL!", NULL); return TCL_ERROR; } return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestsetdefencdirCmd -- * * This function implements the "testsetdefenc" command. It is used to * test Tcl_SetDefaultEncodingDir(). * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestsetdefencdirCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { if (argc != 2) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " defaultDir\"", NULL); return TCL_ERROR; } Tcl_SetDefaultEncodingDir(argv[1]); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestgetdefencdirCmd -- * * This function implements the "testgetdefenc" command. It is used to * test Tcl_GetDefaultEncodingDir(). * * Results: * A standard Tcl result. * * Side effects: * None. * *---------------------------------------------------------------------- */ static int TestgetdefencdirCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { if (argc != 1) { Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], NULL); return TCL_ERROR; } Tcl_AppendResult(interp, Tcl_GetDefaultEncodingDir(), NULL); return TCL_OK; }  /* *---------------------------------------------------------------------- * * TestalarmCmd -- * * Test that EINTR is handled correctly by generating and handling a * signal. This requires using the SA_RESTART flag when registering the * signal handler. * * Results: * None. * * Side Effects: * Sets up an signal and async handlers. * *---------------------------------------------------------------------- */ static int TestalarmCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { #ifdef SA_RESTART unsigned int sec; struct sigaction action; if (argc > 1) { Tcl_GetInt(interp, argv[1], (int *)&sec); } else { sec = 1; } /* * Setup the signal handling that automatically retries any interrupted * I/O system calls. */ action.sa_handler = AlarmHandler; memset((void *) &action.sa_mask, 0, sizeof(sigset_t)); action.sa_flags = SA_RESTART; if (sigaction(SIGALRM, &action, NULL) < 0) { Tcl_AppendResult(interp, "sigaction: ", Tcl_PosixError(interp), NULL); return TCL_ERROR; } (void) alarm(sec); return TCL_OK; #else Tcl_AppendResult(interp, "warning: sigaction SA_RESTART not support on this platform", NULL); return TCL_ERROR; #endif }  /* *---------------------------------------------------------------------- * * AlarmHandler -- * * Signal handler for the alarm command. * * Results: * None. * * Side effects: * Calls the Tcl Async handler. * *---------------------------------------------------------------------- */ static void AlarmHandler( int signum) { gotsig = "1"; }  /* *---------------------------------------------------------------------- * * TestgotsigCmd -- * * Verify the signal was handled after the testalarm command. * * Results: * None. * * Side Effects: * Resets the value of gotsig back to '0'. * *---------------------------------------------------------------------- */ static int TestgotsigCmd( ClientData clientData, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { Tcl_AppendResult(interp, gotsig, NULL); gotsig = "0"; return TCL_OK; }  /* *--------------------------------------------------------------------------- * * TestchmodCmd -- * * Implements the "testchmod" cmd. Used when testing "file" command. * The only attribute used by the Windows platform is the user write * flag; if this is not set, the file is made read-only. Otehrwise, the * file is made read-write. * * Results: * A standard Tcl result. * * Side effects: * Changes permissions of specified files. * *--------------------------------------------------------------------------- */ static int TestchmodCmd( ClientData dummy, /* Not used. */ Tcl_Interp *interp, /* Current interpreter. */ int argc, /* Number of arguments. */ CONST char **argv) /* Argument strings. */ { int i, mode; char *rest; if (argc < 2) { usage: Tcl_AppendResult(interp, "wrong # args: should be \"", argv[0], " mode file ?file ...?", NULL); return TCL_ERROR; } mode = (int) strtol(argv[1], &rest, 8); if ((rest == argv[1]) || (*rest != '\0')) { goto usage; } for (i = 2; i < argc; i++) { Tcl_DString buffer; CONST char *translated; translated = Tcl_TranslateFileName(interp, argv[i], &buffer); if (translated == NULL) { return TCL_ERROR; } if (chmod(translated, (unsigned) mode) != 0) { Tcl_AppendResult(interp, translated, ": ", Tcl_PosixError(interp), NULL); return TCL_ERROR; } Tcl_DStringFree(&buffer); } return TCL_OK; }

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