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- /*
- * tclMacFile.c --
- *
- * This file implements the channel drivers for Macintosh
- * files. It also comtains Macintosh version of other Tcl
- * functions that deal with the file system.
- *
- * Copyright (c) 1995-1997 Sun Microsystems, Inc.
- *
- * See the file "license.terms" for information on usage and redistribution
- * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
- *
- * SCCS: @(#) tclMacFile.c 1.57 97/04/23 16:23:05
- */
-
- /*
- * Note: This code eventually needs to support async I/O. In doing this
- * we will need to keep track of all current async I/O. If exit to shell
- * is called - we shouldn't exit until all asyc I/O completes.
- */
-
- #include "tclInt.h"
- #include "tclPort.h"
- #include "tclMacInt.h"
- #include <Aliases.h>
- #include <Errors.h>
- #include <Processes.h>
- #include <Strings.h>
- #include <Types.h>
- #include <MoreFiles.h>
- #include <MoreFilesExtras.h>
- #include <FSpCompat.h>
-
- /*
- * Static variables used by the TclMacStat function.
- */
- static int initalized = false;
- static long gmt_offset;
-
- /*
- * The variable below caches the name of the current working directory
- * in order to avoid repeated calls to getcwd. The string is malloc-ed.
- * NULL means the cache needs to be refreshed.
- */
-
- static char *currentDir = NULL;
-
- /*
- *----------------------------------------------------------------------
- *
- * TclChdir --
- *
- * Change the current working directory.
- *
- * Results:
- * The result is a standard Tcl result. If an error occurs and
- * interp isn't NULL, an error message is left in interp->result.
- *
- * Side effects:
- * The working directory for this application is changed. Also
- * the cache maintained used by TclGetCwd is deallocated and
- * set to NULL.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclChdir(
- Tcl_Interp *interp, /* If non NULL, used for error reporting. */
- char *dirName) /* Path to new working directory. */
- {
- FSSpec spec;
- OSErr err;
- Boolean isFolder;
- long dirID;
-
- if (currentDir != NULL) {
- ckfree(currentDir);
- currentDir = NULL;
- }
-
- err = FSpLocationFromPath(strlen(dirName), dirName, &spec);
- if (err != noErr) {
- errno = ENOENT;
- goto chdirError;
- }
-
- err = FSpGetDirectoryID(&spec, &dirID, &isFolder);
- if (err != noErr) {
- errno = ENOENT;
- goto chdirError;
- }
-
- if (isFolder != true) {
- errno = ENOTDIR;
- goto chdirError;
- }
-
- err = FSpSetDefaultDir(&spec);
- if (err != noErr) {
- switch (err) {
- case afpAccessDenied:
- errno = EACCES;
- break;
- default:
- errno = ENOENT;
- }
- goto chdirError;
- }
-
- return TCL_OK;
- chdirError:
- if (interp != NULL) {
- Tcl_AppendResult(interp, "couldn't change working directory to \"",
- dirName, "\": ", Tcl_PosixError(interp), (char *) NULL);
- }
- return TCL_ERROR;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclGetCwd --
- *
- * Return the path name of the current working directory.
- *
- * Results:
- * The result is the full path name of the current working
- * directory, or NULL if an error occurred while figuring it
- * out. If an error occurs and interp isn't NULL, an error
- * message is left in interp->result.
- *
- * Side effects:
- * The path name is cached to avoid having to recompute it
- * on future calls; if it is already cached, the cached
- * value is returned.
- *
- *----------------------------------------------------------------------
- */
-
- char *
- TclGetCwd(
- Tcl_Interp *interp) /* If non NULL, used for error reporting. */
- {
- FSSpec theSpec;
- int length;
- Handle pathHandle = NULL;
-
- if (currentDir == NULL) {
- if (FSpGetDefaultDir(&theSpec) != noErr) {
- if (interp != NULL) {
- interp->result = "error getting working directory name";
- }
- return NULL;
- }
- if (FSpPathFromLocation(&theSpec, &length, &pathHandle) != noErr) {
- if (interp != NULL) {
- interp->result = "error getting working directory name";
- }
- return NULL;
- }
- HLock(pathHandle);
- currentDir = (char *) ckalloc((unsigned) (length + 1));
- strcpy(currentDir, *pathHandle);
- HUnlock(pathHandle);
- DisposeHandle(pathHandle);
- }
- return currentDir;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * Tcl_WaitPid --
- *
- * Fakes a call to wait pid.
- *
- * Results:
- * Always returns -1.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- Tcl_Pid
- Tcl_WaitPid(
- Tcl_Pid pid,
- int *statPtr,
- int options)
- {
- return (Tcl_Pid) -1;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * Tcl_FindExecutable --
- *
- * This procedure computes the absolute path name of the current
- * application, given its argv[0] value. However, this
- * implementation doesn't use of need the argv[0] value. NULL
- * may be passed in its place.
- *
- * Results:
- * None.
- *
- * Side effects:
- * The variable tclExecutableName gets filled in with the file
- * name for the application, if we figured it out. If we couldn't
- * figure it out, Tcl_FindExecutable is set to NULL.
- *
- *----------------------------------------------------------------------
- */
-
- void
- Tcl_FindExecutable(
- char *argv0) /* The value of the application's argv[0]. */
- {
- ProcessSerialNumber psn;
- ProcessInfoRec info;
- Str63 appName;
- FSSpec fileSpec;
- int pathLength;
- Handle pathName = NULL;
- OSErr err;
-
- GetCurrentProcess(&psn);
- info.processInfoLength = sizeof(ProcessInfoRec);
- info.processName = appName;
- info.processAppSpec = &fileSpec;
- GetProcessInformation(&psn, &info);
-
- if (tclExecutableName != NULL) {
- ckfree(tclExecutableName);
- tclExecutableName = NULL;
- }
-
- err = FSpPathFromLocation(&fileSpec, &pathLength, &pathName);
-
- tclExecutableName = (char *) ckalloc((unsigned) pathLength + 1);
- HLock(pathName);
- strcpy(tclExecutableName, *pathName);
- HUnlock(pathName);
- DisposeHandle(pathName);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclGetUserHome --
- *
- * This function takes the passed in user name and finds the
- * corresponding home directory specified in the password file.
- *
- * Results:
- * On a Macintosh we always return a NULL.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- char *
- TclGetUserHome(
- char *name, /* User name to use to find home directory. */
- Tcl_DString *bufferPtr) /* May be used to hold result. Must not hold
- * anything at the time of the call, and need
- * not even be initialized. */
- {
- return NULL;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMatchFiles --
- *
- * This routine is used by the globbing code to search a
- * directory for all files which match a given pattern.
- *
- * Results:
- * If the tail argument is NULL, then the matching files are
- * added to the interp->result. Otherwise, TclDoGlob is called
- * recursively for each matching subdirectory. The return value
- * is a standard Tcl result indicating whether an error occurred
- * in globbing.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------- */
-
- int
- TclMatchFiles(
- Tcl_Interp *interp, /* Interpreter to receive results. */
- char *separators, /* Directory separators to pass to TclDoGlob. */
- Tcl_DString *dirPtr, /* Contains path to directory to search. */
- char *pattern, /* Pattern to match against. */
- char *tail) /* Pointer to end of pattern. Tail must
- * point to a location in pattern. */
- {
- char *dirName, *patternEnd = tail;
- char savedChar;
- int result = TCL_OK;
- int baseLength = Tcl_DStringLength(dirPtr);
- CInfoPBRec pb;
- OSErr err;
- FSSpec dirSpec;
- Boolean isDirectory;
- long dirID;
- short itemIndex;
- Str255 fileName;
-
-
- /*
- * Make sure that the directory part of the name really is a
- * directory.
- */
-
- dirName = dirPtr->string;
- FSpLocationFromPath(strlen(dirName), dirName, &dirSpec);
- err = FSpGetDirectoryID(&dirSpec, &dirID, &isDirectory);
- if ((err != noErr) || !isDirectory) {
- return TCL_OK;
- }
-
- /*
- * Now open the directory for reading and iterate over the contents.
- */
-
- pb.hFileInfo.ioVRefNum = dirSpec.vRefNum;
- pb.hFileInfo.ioDirID = dirID;
- pb.hFileInfo.ioNamePtr = (StringPtr) fileName;
- pb.hFileInfo.ioFDirIndex = itemIndex = 1;
-
- /*
- * Clean up the end of the pattern and the tail pointer. Leave
- * the tail pointing to the first character after the path separator
- * following the pattern, or NULL. Also, ensure that the pattern
- * is null-terminated.
- */
-
- if (*tail == '\\') {
- tail++;
- }
- if (*tail == '\0') {
- tail = NULL;
- } else {
- tail++;
- }
- savedChar = *patternEnd;
- *patternEnd = '\0';
-
- while (1) {
- pb.hFileInfo.ioFDirIndex = itemIndex;
- pb.hFileInfo.ioDirID = dirID;
- err = PBGetCatInfoSync(&pb);
- if (err != noErr) {
- break;
- }
-
- /*
- * Now check to see if the file matches. If there are more
- * characters to be processed, then ensure matching files are
- * directories before calling TclDoGlob. Otherwise, just add
- * the file to the result.
- */
-
- p2cstr(fileName);
- if (Tcl_StringMatch((char *) fileName, pattern)) {
- Tcl_DStringSetLength(dirPtr, baseLength);
- Tcl_DStringAppend(dirPtr, (char *) fileName, -1);
- if (tail == NULL) {
- if ((dirPtr->length > 1) &&
- (strchr(dirPtr->string+1, ':') == NULL)) {
- Tcl_AppendElement(interp, dirPtr->string+1);
- } else {
- Tcl_AppendElement(interp, dirPtr->string);
- }
- } else if ((pb.hFileInfo.ioFlAttrib & ioDirMask) != 0) {
- Tcl_DStringAppend(dirPtr, ":", 1);
- result = TclDoGlob(interp, separators, dirPtr, tail);
- if (result != TCL_OK) {
- break;
- }
- }
- }
-
- itemIndex++;
- }
- *patternEnd = savedChar;
-
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMacStat --
- *
- * This function replaces the library version of stat. The stat
- * function provided by most Mac compiliers is rather broken and
- * incomplete.
- *
- * Results:
- * See stat documentation.
- *
- * Side effects:
- * See stat documentation.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclMacStat(
- char *path,
- struct stat *buf)
- {
- HFileInfo fpb;
- HVolumeParam vpb;
- OSErr err;
- FSSpec fileSpec;
- Boolean isDirectory;
- long dirID;
-
- err = FSpLocationFromPath(strlen(path), path, &fileSpec);
- if (err != noErr) {
- errno = TclMacOSErrorToPosixError(err);
- return -1;
- }
-
- /*
- * Fill the fpb & vpb struct up with info about file or directory.
- */
-
- FSpGetDirectoryID(&fileSpec, &dirID, &isDirectory);
- vpb.ioVRefNum = fpb.ioVRefNum = fileSpec.vRefNum;
- vpb.ioNamePtr = fpb.ioNamePtr = fileSpec.name;
- if (isDirectory) {
- fpb.ioDirID = fileSpec.parID;
- } else {
- fpb.ioDirID = dirID;
- }
-
- fpb.ioFDirIndex = 0;
- err = PBGetCatInfoSync((CInfoPBPtr)&fpb);
- if (err == noErr) {
- vpb.ioVolIndex = 0;
- err = PBHGetVInfoSync((HParmBlkPtr)&vpb);
- if (err == noErr && buf != NULL) {
- /*
- * Files are always readable by everyone.
- */
-
- buf->st_mode = S_IRUSR | S_IRGRP | S_IROTH;
-
- /*
- * Use the Volume Info & File Info to fill out stat buf.
- */
- if (fpb.ioFlAttrib & 0x10) {
- buf->st_mode |= S_IFDIR;
- buf->st_nlink = 2;
- } else {
- buf->st_nlink = 1;
- if (fpb.ioFlFndrInfo.fdFlags & 0x8000) {
- buf->st_mode |= S_IFLNK;
- } else {
- buf->st_mode |= S_IFREG;
- }
- }
- if ((fpb.ioFlAttrib & 0x10) || (fpb.ioFlFndrInfo.fdType == 'APPL')) {
- /*
- * Directories and applications are executable by everyone.
- */
-
- buf->st_mode |= S_IXUSR | S_IXGRP | S_IXOTH;
- }
- if ((fpb.ioFlAttrib & 0x01) == 0){
- /*
- * If not locked, then everyone has write acces.
- */
-
- buf->st_mode |= S_IWUSR | S_IWGRP | S_IWOTH;
- }
- buf->st_ino = fpb.ioDirID;
- buf->st_dev = fpb.ioVRefNum;
- buf->st_uid = -1;
- buf->st_gid = -1;
- buf->st_rdev = 0;
- buf->st_size = fpb.ioFlLgLen;
- buf->st_blksize = vpb.ioVAlBlkSiz;
- buf->st_blocks = (buf->st_size + buf->st_blksize - 1)
- / buf->st_blksize;
-
- /*
- * The times returned by the Mac file system are in the
- * local time zone. We convert them to GMT so that the
- * epoch starts from GMT. This is also consistant with
- * what is returned from "clock seconds".
- */
- if (initalized == false) {
- MachineLocation loc;
-
- ReadLocation(&loc);
- gmt_offset = loc.u.gmtDelta & 0x00ffffff;
- if (gmt_offset & 0x00800000) {
- gmt_offset = gmt_offset | 0xff000000;
- }
- initalized = true;
- }
- buf->st_atime = buf->st_mtime = fpb.ioFlMdDat - gmt_offset;
- buf->st_ctime = fpb.ioFlCrDat - gmt_offset;
-
- }
- }
-
- if (err != noErr) {
- errno = TclMacOSErrorToPosixError(err);
- }
-
- return (err == noErr ? 0 : -1);
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMacReadlink --
- *
- * This function replaces the library version of readlink.
- *
- * Results:
- * See readlink documentation.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclMacReadlink(
- char *path,
- char *buf,
- int size)
- {
- HFileInfo fpb;
- OSErr err;
- FSSpec fileSpec;
- Boolean isDirectory;
- Boolean wasAlias;
- long dirID;
- char fileName[256];
- char *end;
- Handle theString = NULL;
- int pathSize;
-
- /*
- * Remove ending colons if they exist.
- */
- while ((strlen(path) != 0) && (path[strlen(path) - 1] == ':')) {
- path[strlen(path) - 1] = NULL;
- }
-
- if (strchr(path, ':') == NULL) {
- strcpy(fileName, path);
- path = NULL;
- } else {
- end = strrchr(path, ':') + 1;
- strcpy(fileName, end);
- *end = NULL;
- }
- c2pstr(fileName);
-
- /*
- * Create the file spec for the directory of the file
- * we want to look at.
- */
- if (path != NULL) {
- err = FSpLocationFromPath(strlen(path), path, &fileSpec);
- if (err != noErr) {
- errno = EINVAL;
- return -1;
- }
- } else {
- FSMakeFSSpecCompat(0, 0, NULL, &fileSpec);
- }
-
- /*
- * Fill the fpb struct up with info about file or directory.
- */
- FSpGetDirectoryID(&fileSpec, &dirID, &isDirectory);
- fpb.ioVRefNum = fileSpec.vRefNum;
- fpb.ioDirID = dirID;
- fpb.ioNamePtr = (StringPtr) fileName;
-
- fpb.ioFDirIndex = 0;
- err = PBGetCatInfoSync((CInfoPBPtr)&fpb);
- if (err != noErr) {
- errno = TclMacOSErrorToPosixError(err);
- return -1;
- } else {
- if (fpb.ioFlAttrib & 0x10) {
- errno = EINVAL;
- return -1;
- } else {
- if (fpb.ioFlFndrInfo.fdFlags & 0x8000) {
- /*
- * The file is a link!
- */
- } else {
- errno = EINVAL;
- return -1;
- }
- }
- }
-
- /*
- * If we are here it's really a link - now find out
- * where it points to.
- */
- err = FSMakeFSSpecCompat(fileSpec.vRefNum, dirID, (StringPtr) fileName, &fileSpec);
- if (err == noErr) {
- err = ResolveAliasFile(&fileSpec, true, &isDirectory, &wasAlias);
- }
- if ((err == fnfErr) || wasAlias) {
- err = FSpPathFromLocation(&fileSpec, &pathSize, &theString);
- if ((err != noErr) || (pathSize > size)) {
- DisposeHandle(theString);
- errno = ENAMETOOLONG;
- return -1;
- }
- } else {
- errno = EINVAL;
- return -1;
- }
-
- strncpy(buf, *theString, pathSize);
- DisposeHandle(theString);
-
- return pathSize;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMacAccess --
- *
- * This function replaces the library version of access. The
- * access function provided by most Mac compiliers is rather
- * broken or incomplete.
- *
- * Results:
- * See access documentation.
- *
- * Side effects:
- * See access documentation.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclMacAccess(
- const char *path,
- int mode)
- {
- HFileInfo fpb;
- HVolumeParam vpb;
- OSErr err;
- FSSpec fileSpec;
- Boolean isDirectory;
- long dirID;
- int full_mode = 0;
-
- err = FSpLocationFromPath(strlen(path), (char *) path, &fileSpec);
- if (err != noErr) {
- errno = TclMacOSErrorToPosixError(err);
- return -1;
- }
-
- /*
- * Fill the fpb & vpb struct up with info about file or directory.
- */
- FSpGetDirectoryID(&fileSpec, &dirID, &isDirectory);
- vpb.ioVRefNum = fpb.ioVRefNum = fileSpec.vRefNum;
- vpb.ioNamePtr = fpb.ioNamePtr = fileSpec.name;
- if (isDirectory) {
- fpb.ioDirID = fileSpec.parID;
- } else {
- fpb.ioDirID = dirID;
- }
-
- fpb.ioFDirIndex = 0;
- err = PBGetCatInfoSync((CInfoPBPtr)&fpb);
- if (err == noErr) {
- vpb.ioVolIndex = 0;
- err = PBHGetVInfoSync((HParmBlkPtr)&vpb);
- if (err == noErr) {
- /*
- * Use the Volume Info & File Info to determine
- * access information. If we have got this far
- * we know the directory is searchable or the file
- * exists. (We have F_OK)
- */
-
- /*
- * Check to see if the volume is hardware or
- * software locked. If so we arn't W_OK.
- */
- if (mode & W_OK) {
- if ((vpb.ioVAtrb & 0x0080) || (vpb.ioVAtrb & 0x8000)) {
- errno = EROFS;
- return -1;
- }
- if (fpb.ioFlAttrib & 0x01) {
- errno = EACCES;
- return -1;
- }
- }
-
- /*
- * Directories are always searchable and executable. But only
- * files of type 'APPL' are executable.
- */
- if (!(fpb.ioFlAttrib & 0x10) && (mode & X_OK)
- && (fpb.ioFlFndrInfo.fdType != 'APPL')) {
- return -1;
- }
- }
- }
-
- if (err != noErr) {
- errno = TclMacOSErrorToPosixError(err);
- return -1;
- }
-
- return 0;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMacFOpenHack --
- *
- * This function replaces fopen. It supports paths with alises.
- * Note, remember to undefine the fopen macro!
- *
- * Results:
- * See fopen documentation.
- *
- * Side effects:
- * See fopen documentation.
- *
- *----------------------------------------------------------------------
- */
-
- #undef fopen
- FILE *
- TclMacFOpenHack(
- const char *path,
- const char *mode)
- {
- OSErr err;
- FSSpec fileSpec;
- Handle pathString = NULL;
- int size;
- FILE * f;
-
- err = FSpLocationFromPath(strlen(path), (char *) path, &fileSpec);
- if ((err != noErr) && (err != fnfErr)) {
- return NULL;
- }
- err = FSpPathFromLocation(&fileSpec, &size, &pathString);
- if ((err != noErr) && (err != fnfErr)) {
- return NULL;
- }
-
- HLock(pathString);
- f = fopen(*pathString, mode);
- HUnlock(pathString);
- DisposeHandle(pathString);
- return f;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TclMacOSErrorToPosixError --
- *
- * Given a Macintosh OSErr return the appropiate POSIX error.
- *
- * Results:
- * A Posix error.
- *
- * Side effects:
- * None.
- *
- *----------------------------------------------------------------------
- */
-
- int
- TclMacOSErrorToPosixError(
- int error) /* A Macintosh error. */
- {
- switch (error) {
- case noErr:
- return 0;
- case bdNamErr:
- return ENAMETOOLONG;
- case afpObjectTypeErr:
- return ENOTDIR;
- case fnfErr:
- case dirNFErr:
- return ENOENT;
- case dupFNErr:
- return EEXIST;
- case dirFulErr:
- case dskFulErr:
- return ENOSPC;
- case fBsyErr:
- return EBUSY;
- case tmfoErr:
- return ENFILE;
- case fLckdErr:
- case permErr:
- case afpAccessDenied:
- return EACCES;
- case wPrErr:
- case vLckdErr:
- return EROFS;
- case badMovErr:
- return EINVAL;
- case diffVolErr:
- return EXDEV;
- default:
- return EINVAL;
- }
- }
-