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authorrjohnson <rjohnson>1998-03-26 14:45:59 (GMT)
committerrjohnson <rjohnson>1998-03-26 14:45:59 (GMT)
commit2b5738da524e944cda39e24c0a87b745a43bd8c3 (patch)
tree6e8c9473978f6dab66c601e911721a7bd9d70b1b /mac/tclMacFile.c
parentc6a259aeeca4814a97cf6694814c63e74e4e18fa (diff)
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Initial revision
Diffstat (limited to 'mac/tclMacFile.c')
-rw-r--r--mac/tclMacFile.c840
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diff --git a/mac/tclMacFile.c b/mac/tclMacFile.c
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--- /dev/null
+++ b/mac/tclMacFile.c
@@ -0,0 +1,840 @@
+/*
+ * 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;
+ }
+}