diff options
Diffstat (limited to 'tcl8.6/unix/tclUnixFile.c')
| -rw-r--r-- | tcl8.6/unix/tclUnixFile.c | 1243 |
1 files changed, 0 insertions, 1243 deletions
diff --git a/tcl8.6/unix/tclUnixFile.c b/tcl8.6/unix/tclUnixFile.c deleted file mode 100644 index 7ffbf8d..0000000 --- a/tcl8.6/unix/tclUnixFile.c +++ /dev/null @@ -1,1243 +0,0 @@ -/* - * tclUnixFile.c -- - * - * This file contains wrappers around UNIX file handling functions. - * These wrappers mask differences between Windows and UNIX. - * - * Copyright (c) 1995-1998 Sun Microsystems, Inc. - * - * See the file "license.terms" for information on usage and redistribution - * of this file, and for a DISCLAIMER OF ALL WARRANTIES. - */ - -#include "tclInt.h" -#include "tclFileSystem.h" - -static int NativeMatchType(Tcl_Interp *interp, const char* nativeEntry, - const char* nativeName, Tcl_GlobTypeData *types); - -/* - *--------------------------------------------------------------------------- - * - * TclpFindExecutable -- - * - * This function computes the absolute path name of the current - * application, given its argv[0] value. For Cygwin, argv[0] is - * ignored and the path is determined the same as under win32. - * - * Results: - * None. - * - * Side effects: - * The computed path name is stored as a ProcessGlobalValue. - * - *--------------------------------------------------------------------------- - */ - -void -TclpFindExecutable( - const char *argv0) /* The value of the application's argv[0] - * (native). */ -{ - Tcl_Encoding encoding; -#ifdef __CYGWIN__ - int length; - char buf[PATH_MAX * 2]; - char name[PATH_MAX * TCL_UTF_MAX + 1]; - GetModuleFileNameW(NULL, buf, PATH_MAX); - cygwin_conv_path(3, buf, name, PATH_MAX); - length = strlen(name); - if ((length > 4) && !strcasecmp(name + length - 4, ".exe")) { - /* Strip '.exe' part. */ - length -= 4; - } - encoding = Tcl_GetEncoding(NULL, NULL); - TclSetObjNameOfExecutable( - Tcl_NewStringObj(name, length), encoding); -#else - const char *name, *p; - Tcl_StatBuf statBuf; - Tcl_DString buffer, nameString, cwd, utfName; - - if (argv0 == NULL) { - return; - } - Tcl_DStringInit(&buffer); - - name = argv0; - for (p = name; *p != '\0'; p++) { - if (*p == '/') { - /* - * The name contains a slash, so use the name directly without - * doing a path search. - */ - - goto gotName; - } - } - - p = getenv("PATH"); /* INTL: Native. */ - if (p == NULL) { - /* - * There's no PATH environment variable; use the default that is used - * by sh. - */ - - p = ":/bin:/usr/bin"; - } else if (*p == '\0') { - /* - * An empty path is equivalent to ".". - */ - - p = "./"; - } - - /* - * Search through all the directories named in the PATH variable to see if - * argv[0] is in one of them. If so, use that file name. - */ - - while (1) { - while (TclIsSpaceProc(*p)) { - p++; - } - name = p; - while ((*p != ':') && (*p != 0)) { - p++; - } - TclDStringClear(&buffer); - if (p != name) { - Tcl_DStringAppend(&buffer, name, p - name); - if (p[-1] != '/') { - TclDStringAppendLiteral(&buffer, "/"); - } - } - name = Tcl_DStringAppend(&buffer, argv0, -1); - - /* - * INTL: The following calls to access() and stat() should not be - * converted to Tclp routines because they need to operate on native - * strings directly. - */ - - if ((access(name, X_OK) == 0) /* INTL: Native. */ - && (TclOSstat(name, &statBuf) == 0) /* INTL: Native. */ - && S_ISREG(statBuf.st_mode)) { - goto gotName; - } - if (*p == '\0') { - break; - } else if (*(p+1) == 0) { - p = "./"; - } else { - p++; - } - } - TclSetObjNameOfExecutable(Tcl_NewObj(), NULL); - goto done; - - /* - * If the name starts with "/" then just store it - */ - - gotName: -#ifdef DJGPP - if (name[1] == ':') -#else - if (name[0] == '/') -#endif - { - encoding = Tcl_GetEncoding(NULL, NULL); - Tcl_ExternalToUtfDString(encoding, name, -1, &utfName); - TclSetObjNameOfExecutable( - Tcl_NewStringObj(Tcl_DStringValue(&utfName), -1), encoding); - Tcl_DStringFree(&utfName); - goto done; - } - - if (TclpGetCwd(NULL, &cwd) == NULL) { - TclSetObjNameOfExecutable(Tcl_NewObj(), NULL); - goto done; - } - - /* - * The name is relative to the current working directory. First strip off - * a leading "./", if any, then add the full path name of the current - * working directory. - */ - - if ((name[0] == '.') && (name[1] == '/')) { - name += 2; - } - - Tcl_DStringInit(&nameString); - Tcl_DStringAppend(&nameString, name, -1); - - Tcl_DStringFree(&buffer); - Tcl_UtfToExternalDString(NULL, Tcl_DStringValue(&cwd), - Tcl_DStringLength(&cwd), &buffer); - if (Tcl_DStringValue(&cwd)[Tcl_DStringLength(&cwd) -1] != '/') { - TclDStringAppendLiteral(&buffer, "/"); - } - Tcl_DStringFree(&cwd); - TclDStringAppendDString(&buffer, &nameString); - Tcl_DStringFree(&nameString); - - encoding = Tcl_GetEncoding(NULL, NULL); - Tcl_ExternalToUtfDString(encoding, Tcl_DStringValue(&buffer), -1, - &utfName); - TclSetObjNameOfExecutable( - Tcl_NewStringObj(Tcl_DStringValue(&utfName), -1), encoding); - Tcl_DStringFree(&utfName); - - done: - Tcl_DStringFree(&buffer); -#endif -} - -/* - *---------------------------------------------------------------------- - * - * TclpMatchInDirectory -- - * - * This routine is used by the globbing code to search a directory for - * all files which match a given pattern. - * - * Results: - * The return value is a standard Tcl result indicating whether an error - * occurred in globbing. Errors are left in interp, good results are - * [lappend]ed to resultPtr (which must be a valid object). - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -int -TclpMatchInDirectory( - Tcl_Interp *interp, /* Interpreter to receive errors. */ - Tcl_Obj *resultPtr, /* List object to lappend results. */ - Tcl_Obj *pathPtr, /* Contains path to directory to search. */ - const char *pattern, /* Pattern to match against. */ - Tcl_GlobTypeData *types) /* Object containing list of acceptable types. - * May be NULL. In particular the directory - * flag is very important. */ -{ - const char *native; - Tcl_Obj *fileNamePtr; - int matchResult = 0; - - if (types != NULL && types->type == TCL_GLOB_TYPE_MOUNT) { - /* - * The native filesystem never adds mounts. - */ - - return TCL_OK; - } - - fileNamePtr = Tcl_FSGetTranslatedPath(interp, pathPtr); - if (fileNamePtr == NULL) { - return TCL_ERROR; - } - - if (pattern == NULL || (*pattern == '\0')) { - /* - * Match a file directly. - */ - - Tcl_Obj *tailPtr; - const char *nativeTail; - - native = Tcl_FSGetNativePath(pathPtr); - tailPtr = TclPathPart(interp, pathPtr, TCL_PATH_TAIL); - nativeTail = Tcl_FSGetNativePath(tailPtr); - matchResult = NativeMatchType(interp, native, nativeTail, types); - if (matchResult == 1) { - Tcl_ListObjAppendElement(interp, resultPtr, pathPtr); - } - Tcl_DecrRefCount(tailPtr); - Tcl_DecrRefCount(fileNamePtr); - } else { - DIR *d; - Tcl_DirEntry *entryPtr; - const char *dirName; - int dirLength, nativeDirLen; - int matchHidden, matchHiddenPat; - Tcl_StatBuf statBuf; - Tcl_DString ds; /* native encoding of dir */ - Tcl_DString dsOrig; /* utf-8 encoding of dir */ - - Tcl_DStringInit(&dsOrig); - dirName = Tcl_GetStringFromObj(fileNamePtr, &dirLength); - Tcl_DStringAppend(&dsOrig, dirName, dirLength); - - /* - * Make sure that the directory part of the name really is a - * directory. If the directory name is "", use the name "." instead, - * because some UNIX systems don't treat "" like "." automatically. - * Keep the "" for use in generating file names, otherwise "glob - * foo.c" would return "./foo.c". - */ - - if (dirLength == 0) { - dirName = "."; - } else { - dirName = Tcl_DStringValue(&dsOrig); - - /* - * Make sure we have a trailing directory delimiter. - */ - - if (dirName[dirLength-1] != '/') { - dirName = TclDStringAppendLiteral(&dsOrig, "/"); - dirLength++; - } - } - - /* - * Now open the directory for reading and iterate over the contents. - */ - - native = Tcl_UtfToExternalDString(NULL, dirName, -1, &ds); - - if ((TclOSstat(native, &statBuf) != 0) /* INTL: Native. */ - || !S_ISDIR(statBuf.st_mode)) { - Tcl_DStringFree(&dsOrig); - Tcl_DStringFree(&ds); - Tcl_DecrRefCount(fileNamePtr); - return TCL_OK; - } - - d = opendir(native); /* INTL: Native. */ - if (d == NULL) { - Tcl_DStringFree(&ds); - if (interp != NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "couldn't read directory \"%s\": %s", - Tcl_DStringValue(&dsOrig), Tcl_PosixError(interp))); - } - Tcl_DStringFree(&dsOrig); - Tcl_DecrRefCount(fileNamePtr); - return TCL_ERROR; - } - - nativeDirLen = Tcl_DStringLength(&ds); - - /* - * Check to see if -type or the pattern requests hidden files. - */ - - matchHiddenPat = (pattern[0] == '.') - || ((pattern[0] == '\\') && (pattern[1] == '.')); - matchHidden = matchHiddenPat - || (types && (types->perm & TCL_GLOB_PERM_HIDDEN)); - while ((entryPtr = TclOSreaddir(d)) != NULL) { /* INTL: Native. */ - Tcl_DString utfDs; - const char *utfname; - - /* - * Skip this file if it doesn't agree with the hidden parameters - * requested by the user (via -type or pattern). - */ - - if (*entryPtr->d_name == '.') { - if (!matchHidden) { - continue; - } - } else { -#ifdef MAC_OSX_TCL - if (matchHiddenPat) { - continue; - } - /* Also need to check HFS hidden flag in TclMacOSXMatchType. */ -#else - if (matchHidden) { - continue; - } -#endif - } - - /* - * Now check to see if the file matches, according to both type - * and pattern. If so, add the file to the result. - */ - - utfname = Tcl_ExternalToUtfDString(NULL, entryPtr->d_name, -1, - &utfDs); - if (Tcl_StringCaseMatch(utfname, pattern, 0)) { - int typeOk = 1; - - if (types != NULL) { - Tcl_DStringSetLength(&ds, nativeDirLen); - native = Tcl_DStringAppend(&ds, entryPtr->d_name, -1); - matchResult = NativeMatchType(interp, native, - entryPtr->d_name, types); - typeOk = (matchResult == 1); - } - if (typeOk) { - Tcl_ListObjAppendElement(interp, resultPtr, - TclNewFSPathObj(pathPtr, utfname, - Tcl_DStringLength(&utfDs))); - } - } - Tcl_DStringFree(&utfDs); - if (matchResult < 0) { - break; - } - } - - closedir(d); - Tcl_DStringFree(&ds); - Tcl_DStringFree(&dsOrig); - Tcl_DecrRefCount(fileNamePtr); - } - if (matchResult < 0) { - return TCL_ERROR; - } - return TCL_OK; -} - -/* - *---------------------------------------------------------------------- - * - * NativeMatchType -- - * - * This routine is used by the globbing code to check if a file matches a - * given type description. - * - * Results: - * The return value is 1, 0 or -1 indicating whether the file matches the - * given criteria, does not match them, or an error occurred (in which - * case an error is left in interp). - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -static int -NativeMatchType( - Tcl_Interp *interp, /* Interpreter to receive errors. */ - const char *nativeEntry, /* Native path to check. */ - const char *nativeName, /* Native filename to check. */ - Tcl_GlobTypeData *types) /* Type description to match against. */ -{ - Tcl_StatBuf buf; - - if (types == NULL) { - /* - * Simply check for the file's existence, but do it with lstat, in - * case it is a link to a file which doesn't exist (since that case - * would not show up if we used 'access' or 'stat') - */ - - if (TclOSlstat(nativeEntry, &buf) != 0) { - return 0; - } - return 1; - } - - if (types->perm != 0) { - if (TclOSstat(nativeEntry, &buf) != 0) { - /* - * Either the file has disappeared between the 'readdir' call and - * the 'stat' call, or the file is a link to a file which doesn't - * exist (which we could ascertain with lstat), or there is some - * other strange problem. In all these cases, we define this to - * mean the file does not match any defined permission, and - * therefore it is not added to the list of files to return. - */ - - return 0; - } - - /* - * readonly means that there are NO write permissions (even for user), - * but execute is OK for anybody OR that the user immutable flag is - * set (where supported). - */ - - if (((types->perm & TCL_GLOB_PERM_RONLY) && -#if defined(HAVE_CHFLAGS) && defined(UF_IMMUTABLE) - !(buf.st_flags & UF_IMMUTABLE) && -#endif - (buf.st_mode & (S_IWOTH|S_IWGRP|S_IWUSR))) || - ((types->perm & TCL_GLOB_PERM_R) && - (access(nativeEntry, R_OK) != 0)) || - ((types->perm & TCL_GLOB_PERM_W) && - (access(nativeEntry, W_OK) != 0)) || - ((types->perm & TCL_GLOB_PERM_X) && - (access(nativeEntry, X_OK) != 0)) -#ifndef MAC_OSX_TCL - || ((types->perm & TCL_GLOB_PERM_HIDDEN) && - (*nativeName != '.')) -#endif /* MAC_OSX_TCL */ - ) { - return 0; - } - } - if (types->type != 0) { - if (types->perm == 0) { - /* - * We haven't yet done a stat on the file. - */ - - if (TclOSstat(nativeEntry, &buf) != 0) { - /* - * Posix error occurred. The only ok case is if this is a link - * to a nonexistent file, and the user did 'glob -l'. So we - * check that here: - */ - - if ((types->type & TCL_GLOB_TYPE_LINK) - && (TclOSlstat(nativeEntry, &buf) == 0) - && S_ISLNK(buf.st_mode)) { - return 1; - } - return 0; - } - } - - /* - * In order bcdpsfl as in 'find -t' - */ - - if ( ((types->type & TCL_GLOB_TYPE_BLOCK)&& S_ISBLK(buf.st_mode)) || - ((types->type & TCL_GLOB_TYPE_CHAR) && S_ISCHR(buf.st_mode)) || - ((types->type & TCL_GLOB_TYPE_DIR) && S_ISDIR(buf.st_mode)) || - ((types->type & TCL_GLOB_TYPE_PIPE) && S_ISFIFO(buf.st_mode))|| -#ifdef S_ISSOCK - ((types->type & TCL_GLOB_TYPE_SOCK) && S_ISSOCK(buf.st_mode))|| -#endif /* S_ISSOCK */ - ((types->type & TCL_GLOB_TYPE_FILE) && S_ISREG(buf.st_mode))) { - /* - * Do nothing - this file is ok. - */ - } else { -#ifdef S_ISLNK - if ((types->type & TCL_GLOB_TYPE_LINK) - && (TclOSlstat(nativeEntry, &buf) == 0) - && S_ISLNK(buf.st_mode)) { - goto filetypeOK; - } -#endif /* S_ISLNK */ - return 0; - } - } - filetypeOK: - - /* - * If we're on OSX, we also have to worry about matching the file creator - * code (if specified). Do that now. - */ - -#ifdef MAC_OSX_TCL - if (types->macType != NULL || types->macCreator != NULL || - (types->perm & TCL_GLOB_PERM_HIDDEN)) { - int matchResult; - - if (types->perm == 0 && types->type == 0) { - /* - * We haven't yet done a stat on the file. - */ - - if (TclOSstat(nativeEntry, &buf) != 0) { - return 0; - } - } - - matchResult = TclMacOSXMatchType(interp, nativeEntry, nativeName, - &buf, types); - if (matchResult != 1) { - return matchResult; - } - } -#endif /* MAC_OSX_TCL */ - - return 1; -} - -/* - *--------------------------------------------------------------------------- - * - * TclpGetUserHome -- - * - * This function takes the specified user name and finds their home - * directory. - * - * Results: - * The result is a pointer to a string specifying the user's home - * directory, or NULL if the user's home directory could not be - * determined. Storage for the result string is allocated in bufferPtr; - * the caller must call Tcl_DStringFree() when the result is no longer - * needed. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -const char * -TclpGetUserHome( - const char *name, /* User name for desired home directory. */ - Tcl_DString *bufferPtr) /* Uninitialized or free DString filled with - * name of user's home directory. */ -{ - struct passwd *pwPtr; - Tcl_DString ds; - const char *native = Tcl_UtfToExternalDString(NULL, name, -1, &ds); - - pwPtr = TclpGetPwNam(native); /* INTL: Native. */ - Tcl_DStringFree(&ds); - - if (pwPtr == NULL) { - return NULL; - } - Tcl_ExternalToUtfDString(NULL, pwPtr->pw_dir, -1, bufferPtr); - return Tcl_DStringValue(bufferPtr); -} - -/* - *--------------------------------------------------------------------------- - * - * TclpObjAccess -- - * - * This function replaces the library version of access(). - * - * Results: - * See access() documentation. - * - * Side effects: - * See access() documentation. - * - *--------------------------------------------------------------------------- - */ - -int -TclpObjAccess( - Tcl_Obj *pathPtr, /* Path of file to access */ - int mode) /* Permission setting. */ -{ - const char *path = Tcl_FSGetNativePath(pathPtr); - - if (path == NULL) { - return -1; - } - return access(path, mode); -} - -/* - *--------------------------------------------------------------------------- - * - * TclpObjChdir -- - * - * This function replaces the library version of chdir(). - * - * Results: - * See chdir() documentation. - * - * Side effects: - * See chdir() documentation. - * - *--------------------------------------------------------------------------- - */ - -int -TclpObjChdir( - Tcl_Obj *pathPtr) /* Path to new working directory */ -{ - const char *path = Tcl_FSGetNativePath(pathPtr); - - if (path == NULL) { - return -1; - } - return chdir(path); -} - -/* - *---------------------------------------------------------------------- - * - * TclpObjLstat -- - * - * This function replaces the library version of lstat(). - * - * Results: - * See lstat() documentation. - * - * Side effects: - * See lstat() documentation. - * - *---------------------------------------------------------------------- - */ - -int -TclpObjLstat( - Tcl_Obj *pathPtr, /* Path of file to stat */ - Tcl_StatBuf *bufPtr) /* Filled with results of stat call. */ -{ - return TclOSlstat(Tcl_FSGetNativePath(pathPtr), bufPtr); -} - -/* - *--------------------------------------------------------------------------- - * - * TclpGetNativeCwd -- - * - * This function replaces the library version of getcwd(). - * - * Results: - * The input and output are filesystem paths in native form. The result - * is either the given clientData, if the working directory hasn't - * changed, or a new clientData (owned by our caller), giving the new - * native path, or NULL if the current directory could not be determined. - * If NULL is returned, the caller can examine the standard posix error - * codes to determine the cause of the problem. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -ClientData -TclpGetNativeCwd( - ClientData clientData) -{ - char buffer[MAXPATHLEN+1]; - -#ifdef USEGETWD - if (getwd(buffer) == NULL) { /* INTL: Native. */ - return NULL; - } -#else - if (getcwd(buffer, MAXPATHLEN+1) == NULL) { /* INTL: Native. */ - return NULL; - } -#endif /* USEGETWD */ - - if ((clientData == NULL) || strcmp(buffer, (const char *) clientData)) { - char *newCd = ckalloc(strlen(buffer) + 1); - - strcpy(newCd, buffer); - return newCd; - } - - /* - * No change to pwd. - */ - - return clientData; -} - -/* - *--------------------------------------------------------------------------- - * - * TclpGetCwd -- - * - * This function replaces the library version of getcwd(). (Obsolete - * function, only retained for old extensions which may call it - * directly). - * - * Results: - * The result is a pointer to a string specifying the current directory, - * or NULL if the current directory could not be determined. If NULL is - * returned, an error message is left in the interp's result. Storage for - * the result string is allocated in bufferPtr; the caller must call - * Tcl_DStringFree() when the result is no longer needed. - * - * Side effects: - * None. - * - *---------------------------------------------------------------------- - */ - -const char * -TclpGetCwd( - Tcl_Interp *interp, /* If non-NULL, used for error reporting. */ - Tcl_DString *bufferPtr) /* Uninitialized or free DString filled with - * name of current directory. */ -{ - char buffer[MAXPATHLEN+1]; - -#ifdef USEGETWD - if (getwd(buffer) == NULL) /* INTL: Native. */ -#else - if (getcwd(buffer, MAXPATHLEN+1) == NULL) /* INTL: Native. */ -#endif /* USEGETWD */ - { - if (interp != NULL) { - Tcl_SetObjResult(interp, Tcl_ObjPrintf( - "error getting working directory name: %s", - Tcl_PosixError(interp))); - } - return NULL; - } - return Tcl_ExternalToUtfDString(NULL, buffer, -1, bufferPtr); -} - -/* - *--------------------------------------------------------------------------- - * - * TclpReadlink -- - * - * This function replaces the library version of readlink(). - * - * Results: - * The result is a pointer to a string specifying the contents of the - * symbolic link given by 'path', or NULL if the symbolic link could not - * be read. Storage for the result string is allocated in bufferPtr; the - * caller must call Tcl_DStringFree() when the result is no longer - * needed. - * - * Side effects: - * See readlink() documentation. - * - *--------------------------------------------------------------------------- - */ - -char * -TclpReadlink( - const char *path, /* Path of file to readlink (UTF-8). */ - Tcl_DString *linkPtr) /* Uninitialized or free DString filled with - * contents of link (UTF-8). */ -{ -#ifndef DJGPP - char link[MAXPATHLEN]; - int length; - const char *native; - Tcl_DString ds; - - native = Tcl_UtfToExternalDString(NULL, path, -1, &ds); - length = readlink(native, link, sizeof(link)); /* INTL: Native. */ - Tcl_DStringFree(&ds); - - if (length < 0) { - return NULL; - } - - Tcl_ExternalToUtfDString(NULL, link, length, linkPtr); - return Tcl_DStringValue(linkPtr); -#else - return NULL; -#endif /* !DJGPP */ -} - -/* - *---------------------------------------------------------------------- - * - * TclpObjStat -- - * - * This function replaces the library version of stat(). - * - * Results: - * See stat() documentation. - * - * Side effects: - * See stat() documentation. - * - *---------------------------------------------------------------------- - */ - -int -TclpObjStat( - Tcl_Obj *pathPtr, /* Path of file to stat */ - Tcl_StatBuf *bufPtr) /* Filled with results of stat call. */ -{ - const char *path = Tcl_FSGetNativePath(pathPtr); - - if (path == NULL) { - return -1; - } - return TclOSstat(path, bufPtr); -} - -#ifdef S_IFLNK - -Tcl_Obj * -TclpObjLink( - Tcl_Obj *pathPtr, - Tcl_Obj *toPtr, - int linkAction) -{ - if (toPtr != NULL) { - const char *src = Tcl_FSGetNativePath(pathPtr); - const char *target = NULL; - - if (src == NULL) { - return NULL; - } - - /* - * If we're making a symbolic link and the path is relative, then we - * must check whether it exists _relative_ to the directory in which - * the src is found (not relative to the current cwd which is just not - * relevant in this case). - * - * If we're making a hard link, then a relative path is just converted - * to absolute relative to the cwd. - */ - - if ((linkAction & TCL_CREATE_SYMBOLIC_LINK) - && (Tcl_FSGetPathType(toPtr) == TCL_PATH_RELATIVE)) { - Tcl_Obj *dirPtr, *absPtr; - - dirPtr = TclPathPart(NULL, pathPtr, TCL_PATH_DIRNAME); - if (dirPtr == NULL) { - return NULL; - } - absPtr = Tcl_FSJoinToPath(dirPtr, 1, &toPtr); - Tcl_IncrRefCount(absPtr); - if (Tcl_FSAccess(absPtr, F_OK) == -1) { - Tcl_DecrRefCount(absPtr); - Tcl_DecrRefCount(dirPtr); - - /* - * Target doesn't exist. - */ - - errno = ENOENT; - return NULL; - } - - /* - * Target exists; we'll construct the relative path we want below. - */ - - Tcl_DecrRefCount(absPtr); - Tcl_DecrRefCount(dirPtr); - } else { - target = Tcl_FSGetNativePath(toPtr); - if (target == NULL) { - return NULL; - } - if (access(target, F_OK) == -1) { - /* - * Target doesn't exist. - */ - - errno = ENOENT; - return NULL; - } - } - - if (access(src, F_OK) != -1) { - /* - * Src exists. - */ - - errno = EEXIST; - return NULL; - } - - /* - * Check symbolic link flag first, since we prefer to create these. - */ - - if (linkAction & TCL_CREATE_SYMBOLIC_LINK) { - int targetLen; - Tcl_DString ds; - Tcl_Obj *transPtr; - - /* - * Now we don't want to link to the absolute, normalized path. - * Relative links are quite acceptable (but links to ~user are not - * -- these must be expanded first). - */ - - transPtr = Tcl_FSGetTranslatedPath(NULL, toPtr); - if (transPtr == NULL) { - return NULL; - } - target = Tcl_GetStringFromObj(transPtr, &targetLen); - target = Tcl_UtfToExternalDString(NULL, target, targetLen, &ds); - Tcl_DecrRefCount(transPtr); - - if (symlink(target, src) != 0) { - toPtr = NULL; - } - Tcl_DStringFree(&ds); - } else if (linkAction & TCL_CREATE_HARD_LINK) { - if (link(target, src) != 0) { - return NULL; - } - } else { - errno = ENODEV; - return NULL; - } - return toPtr; - } else { - Tcl_Obj *linkPtr = NULL; - - char link[MAXPATHLEN]; - int length; - Tcl_DString ds; - Tcl_Obj *transPtr; - - transPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr); - if (transPtr == NULL) { - return NULL; - } - Tcl_DecrRefCount(transPtr); - - length = readlink(Tcl_FSGetNativePath(pathPtr), link, sizeof(link)); - if (length < 0) { - return NULL; - } - - Tcl_ExternalToUtfDString(NULL, link, length, &ds); - linkPtr = TclDStringToObj(&ds); - Tcl_IncrRefCount(linkPtr); - return linkPtr; - } -} -#endif /* S_IFLNK */ - -/* - *--------------------------------------------------------------------------- - * - * TclpFilesystemPathType -- - * - * This function is part of the native filesystem support, and returns - * the path type of the given path. Right now it simply returns NULL. In - * the future it could return specific path types, like 'nfs', 'samba', - * 'FAT32', etc. - * - * Results: - * NULL at present. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -Tcl_Obj * -TclpFilesystemPathType( - Tcl_Obj *pathPtr) -{ - /* - * All native paths are of the same type. - */ - - return NULL; -} - -/* - *--------------------------------------------------------------------------- - * - * TclpNativeToNormalized -- - * - * Convert native format to a normalized path object, with refCount of - * zero. - * - * Currently assumes all native paths are actually normalized already, so - * if the path given is not normalized this will actually just convert to - * a valid string path, but not necessarily a normalized one. - * - * Results: - * A valid normalized path. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -Tcl_Obj * -TclpNativeToNormalized( - ClientData clientData) -{ - Tcl_DString ds; - - Tcl_ExternalToUtfDString(NULL, (const char *) clientData, -1, &ds); - return TclDStringToObj(&ds); -} - -/* - *--------------------------------------------------------------------------- - * - * TclNativeCreateNativeRep -- - * - * Create a native representation for the given path. - * - * Results: - * The nativePath representation. - * - * Side effects: - * Memory will be allocated. The path may need to be normalized. - * - *--------------------------------------------------------------------------- - */ - -ClientData -TclNativeCreateNativeRep( - Tcl_Obj *pathPtr) -{ - char *nativePathPtr; - const char *str; - Tcl_DString ds; - Tcl_Obj *validPathPtr; - int len; - - if (TclFSCwdIsNative()) { - /* - * The cwd is native, which means we can use the translated path - * without worrying about normalization (this will also usually be - * shorter so the utf-to-external conversion will be somewhat faster). - */ - - validPathPtr = Tcl_FSGetTranslatedPath(NULL, pathPtr); - if (validPathPtr == NULL) { - return NULL; - } - } else { - /* - * Make sure the normalized path is set. - */ - - validPathPtr = Tcl_FSGetNormalizedPath(NULL, pathPtr); - if (validPathPtr == NULL) { - return NULL; - } - Tcl_IncrRefCount(validPathPtr); - } - - str = Tcl_GetStringFromObj(validPathPtr, &len); - Tcl_UtfToExternalDString(NULL, str, len, &ds); - len = Tcl_DStringLength(&ds) + sizeof(char); - if (strlen(Tcl_DStringValue(&ds)) < len - sizeof(char)) { - /* See bug [3118489]: NUL in filenames */ - Tcl_DecrRefCount(validPathPtr); - Tcl_DStringFree(&ds); - return NULL; - } - Tcl_DecrRefCount(validPathPtr); - nativePathPtr = ckalloc(len); - memcpy(nativePathPtr, Tcl_DStringValue(&ds), (size_t) len); - - Tcl_DStringFree(&ds); - return nativePathPtr; -} - -/* - *--------------------------------------------------------------------------- - * - * TclNativeDupInternalRep -- - * - * Duplicate the native representation. - * - * Results: - * The copied native representation, or NULL if it is not possible to - * copy the representation. - * - * Side effects: - * Memory will be allocated for the copy. - * - *--------------------------------------------------------------------------- - */ - -ClientData -TclNativeDupInternalRep( - ClientData clientData) -{ - char *copy; - size_t len; - - if (clientData == NULL) { - return NULL; - } - - /* - * ASCII representation when running on Unix. - */ - - len = (strlen((const char*) clientData) + 1) * sizeof(char); - - copy = ckalloc(len); - memcpy(copy, clientData, len); - return copy; -} - -/* - *--------------------------------------------------------------------------- - * - * TclpUtime -- - * - * Set the modification date for a file. - * - * Results: - * 0 on success, -1 on error. - * - * Side effects: - * None. - * - *--------------------------------------------------------------------------- - */ - -int -TclpUtime( - Tcl_Obj *pathPtr, /* File to modify */ - struct utimbuf *tval) /* New modification date structure */ -{ - return utime(Tcl_FSGetNativePath(pathPtr), tval); -} - -#ifdef __CYGWIN__ - -int -TclOSstat( - const char *name, - void *cygstat) -{ - struct stat buf; - Tcl_StatBuf *statBuf = cygstat; - int result = stat(name, &buf); - - statBuf->st_mode = buf.st_mode; - statBuf->st_ino = buf.st_ino; - statBuf->st_dev = buf.st_dev; - statBuf->st_rdev = buf.st_rdev; - statBuf->st_nlink = buf.st_nlink; - statBuf->st_uid = buf.st_uid; - statBuf->st_gid = buf.st_gid; - statBuf->st_size = buf.st_size; - statBuf->st_atime = buf.st_atime; - statBuf->st_mtime = buf.st_mtime; - statBuf->st_ctime = buf.st_ctime; - return result; -} - -int -TclOSlstat( - const char *name, - void *cygstat) -{ - struct stat buf; - Tcl_StatBuf *statBuf = cygstat; - int result = lstat(name, &buf); - - statBuf->st_mode = buf.st_mode; - statBuf->st_ino = buf.st_ino; - statBuf->st_dev = buf.st_dev; - statBuf->st_rdev = buf.st_rdev; - statBuf->st_nlink = buf.st_nlink; - statBuf->st_uid = buf.st_uid; - statBuf->st_gid = buf.st_gid; - statBuf->st_size = buf.st_size; - statBuf->st_atime = buf.st_atime; - statBuf->st_mtime = buf.st_mtime; - statBuf->st_ctime = buf.st_ctime; - return result; -} -#endif /* CYGWIN */ - -/* - * Local Variables: - * mode: c - * c-basic-offset: 4 - * fill-column: 78 - * End: - */ |