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- /*
- * tclUnixFCmd.c
- *
- * This file implements the unix specific portion of file manipulation
- * subcommands of the "file" command. All filename arguments should
- * already be translated to native format.
- *
- * Copyright (c) 1996-1997 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: @(#) tclUnixFCmd.c 1.29 97/06/16 16:28:25
- *
- * Portions of this code were derived from NetBSD source code which has
- * the following copyright notice:
- *
- * Copyright (c) 1988, 1993, 1994
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #include "tclInt.h"
- #include "tclPort.h"
- #include <utime.h>
- #include <grp.h>
-
- /*
- * The following constants specify the type of callback when
- * TraverseUnixTree() calls the traverseProc()
- */
-
- #define DOTREE_PRED 1 /* pre-order directory */
- #define DOTREE_POSTD 2 /* post-order directory */
- #define DOTREE_F 3 /* regular file */
-
- /*
- * Callbacks for file attributes code.
- */
-
- static int GetGroupAttribute _ANSI_ARGS_((Tcl_Interp *interp,
- int objIndex, char *fileName,
- Tcl_Obj **attributePtrPtr));
- static int GetOwnerAttribute _ANSI_ARGS_((Tcl_Interp *interp,
- int objIndex, char *fileName,
- Tcl_Obj **attributePtrPtr));
- static int GetPermissionsAttribute _ANSI_ARGS_((
- Tcl_Interp *interp, int objIndex, char *fileName,
- Tcl_Obj **attributePtrPtr));
- static int SetGroupAttribute _ANSI_ARGS_((Tcl_Interp *interp,
- int objIndex, char *fileName,
- Tcl_Obj *attributePtr));
- static int SetOwnerAttribute _ANSI_ARGS_((Tcl_Interp *interp,
- int objIndex, char *fileName,
- Tcl_Obj *attributePtr));
- static int SetPermissionsAttribute _ANSI_ARGS_((
- Tcl_Interp *interp, int objIndex, char *fileName,
- Tcl_Obj *attributePtr));
-
- /*
- * Prototype for the TraverseUnixTree callback function.
- */
-
- typedef int (TraversalProc) _ANSI_ARGS_((char *src, char *dst,
- struct stat *sb, int type, Tcl_DString *errorPtr));
-
- /*
- * Constants and variables necessary for file attributes subcommand.
- */
-
- enum {
- UNIX_GROUP_ATTRIBUTE,
- UNIX_OWNER_ATTRIBUTE,
- UNIX_PERMISSIONS_ATTRIBUTE
- };
-
- char *tclpFileAttrStrings[] = {"-group", "-owner", "-permissions",
- (char *) NULL};
- CONST TclFileAttrProcs tclpFileAttrProcs[] = {
- {GetGroupAttribute, SetGroupAttribute},
- {GetOwnerAttribute, SetOwnerAttribute},
- {GetPermissionsAttribute, SetPermissionsAttribute}};
-
- /*
- * Declarations for local procedures defined in this file:
- */
-
- static int CopyFile _ANSI_ARGS_((char *src, char *dst,
- struct stat *srcStatBufPtr));
- static int CopyFileAtts _ANSI_ARGS_((char *src, char *dst,
- struct stat *srcStatBufPtr));
- static int TraversalCopy _ANSI_ARGS_((char *src, char *dst,
- struct stat *sbPtr, int type,
- Tcl_DString *errorPtr));
- static int TraversalDelete _ANSI_ARGS_((char *src, char *dst,
- struct stat *sbPtr, int type,
- Tcl_DString *errorPtr));
- static int TraverseUnixTree _ANSI_ARGS_((
- TraversalProc *traversalProc,
- Tcl_DString *sourcePath, Tcl_DString *destPath,
- Tcl_DString *errorPtr));
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpRenameFile --
- *
- * Changes the name of an existing file or directory, from src to dst.
- * If src and dst refer to the same file or directory, does nothing
- * and returns success. Otherwise if dst already exists, it will be
- * deleted and replaced by src subject to the following conditions:
- * If src is a directory, dst may be an empty directory.
- * If src is a file, dst may be a file.
- * In any other situation where dst already exists, the rename will
- * fail.
- *
- * Results:
- * If the directory was successfully created, returns TCL_OK.
- * Otherwise the return value is TCL_ERROR and errno is set to
- * indicate the error. Some possible values for errno are:
- *
- * EACCES: src or dst parent directory can't be read and/or written.
- * EEXIST: dst is a non-empty directory.
- * EINVAL: src is a root directory or dst is a subdirectory of src.
- * EISDIR: dst is a directory, but src is not.
- * ENOENT: src doesn't exist, or src or dst is "".
- * ENOTDIR: src is a directory, but dst is not.
- * EXDEV: src and dst are on different filesystems.
- *
- * Side effects:
- * The implementation of rename may allow cross-filesystem renames,
- * but the caller should be prepared to emulate it with copy and
- * delete if errno is EXDEV.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpRenameFile(src, dst)
- char *src; /* Pathname of file or dir to be renamed. */
- char *dst; /* New pathname of file or directory. */
- {
- if (rename(src, dst) == 0) {
- return TCL_OK;
- }
- if (errno == ENOTEMPTY) {
- errno = EEXIST;
- }
-
- #ifdef sparc
- /*
- * SunOS 4.1.4 reports overwriting a non-empty directory with a
- * directory as EINVAL instead of EEXIST (first rule out the correct
- * EINVAL result code for moving a directory into itself). Must be
- * conditionally compiled because realpath() is only defined on SunOS.
- */
-
- if (errno == EINVAL) {
- char srcPath[MAXPATHLEN], dstPath[MAXPATHLEN];
- DIR *dirPtr;
- struct dirent *dirEntPtr;
-
- if ((realpath(src, srcPath) != NULL)
- && (realpath(dst, dstPath) != NULL)
- && (strncmp(srcPath, dstPath, strlen(srcPath)) != 0)) {
- dirPtr = opendir(dst);
- if (dirPtr != NULL) {
- while ((dirEntPtr = readdir(dirPtr)) != NULL) {
- if ((strcmp(dirEntPtr->d_name, ".") != 0) &&
- (strcmp(dirEntPtr->d_name, "..") != 0)) {
- errno = EEXIST;
- closedir(dirPtr);
- return TCL_ERROR;
- }
- }
- closedir(dirPtr);
- }
- }
- errno = EINVAL;
- }
- #endif /* sparc */
-
- if (strcmp(src, "/") == 0) {
- /*
- * Alpha reports renaming / as EBUSY and Linux reports it as EACCES,
- * instead of EINVAL.
- */
-
- errno = EINVAL;
- }
-
- /*
- * DEC Alpha OSF1 V3.0 returns EACCES when attempting to move a
- * file across filesystems and the parent directory of that file is
- * not writable. Most other systems return EXDEV. Does nothing to
- * correct this behavior.
- */
-
- return TCL_ERROR;
- }
-
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpCopyFile --
- *
- * Copy a single file (not a directory). If dst already exists and
- * is not a directory, it is removed.
- *
- * Results:
- * If the file was successfully copied, returns TCL_OK. Otherwise
- * the return value is TCL_ERROR and errno is set to indicate the
- * error. Some possible values for errno are:
- *
- * EACCES: src or dst parent directory can't be read and/or written.
- * EISDIR: src or dst is a directory.
- * ENOENT: src doesn't exist. src or dst is "".
- *
- * Side effects:
- * This procedure will also copy symbolic links, block, and
- * character devices, and fifos. For symbolic links, the links
- * themselves will be copied and not what they point to. For the
- * other special file types, the directory entry will be copied and
- * not the contents of the device that it refers to.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpCopyFile(src, dst)
- char *src; /* Pathname of file to be copied. */
- char *dst; /* Pathname of file to copy to. */
- {
- struct stat srcStatBuf, dstStatBuf;
- char link[MAXPATHLEN];
- int length;
-
- /*
- * Have to do a stat() to determine the filetype.
- */
-
- if (lstat(src, &srcStatBuf) != 0) {
- return TCL_ERROR;
- }
- if (S_ISDIR(srcStatBuf.st_mode)) {
- errno = EISDIR;
- return TCL_ERROR;
- }
-
- /*
- * symlink, and some of the other calls will fail if the target
- * exists, so we remove it first
- */
-
- if (lstat(dst, &dstStatBuf) == 0) {
- if (S_ISDIR(dstStatBuf.st_mode)) {
- errno = EISDIR;
- return TCL_ERROR;
- }
- }
- if (unlink(dst) != 0) {
- if (errno != ENOENT) {
- return TCL_ERROR;
- }
- }
-
- switch ((int) (srcStatBuf.st_mode & S_IFMT)) {
- case S_IFLNK:
- length = readlink(src, link, sizeof(link));
- if (length == -1) {
- return TCL_ERROR;
- }
- link[length] = '\0';
- if (symlink(link, dst) < 0) {
- return TCL_ERROR;
- }
- break;
-
- case S_IFBLK:
- case S_IFCHR:
- if (mknod(dst, srcStatBuf.st_mode, srcStatBuf.st_rdev) < 0) {
- return TCL_ERROR;
- }
- return CopyFileAtts(src, dst, &srcStatBuf);
-
- case S_IFIFO:
- if (mkfifo(dst, srcStatBuf.st_mode) < 0) {
- return TCL_ERROR;
- }
- return CopyFileAtts(src, dst, &srcStatBuf);
-
- default:
- return CopyFile(src, dst, &srcStatBuf);
- }
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * CopyFile -
- *
- * Helper function for TclpCopyFile. Copies one regular file,
- * using read() and write().
- *
- * Results:
- * A standard Tcl result.
- *
- * Side effects:
- * A file is copied. Dst will be overwritten if it exists.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- CopyFile(src, dst, srcStatBufPtr)
- char *src; /* Pathname of file to copy. */
- char *dst; /* Pathname of file to create/overwrite. */
- struct stat *srcStatBufPtr; /* Used to determine mode and blocksize */
- {
- int srcFd;
- int dstFd;
- u_int blockSize; /* Optimal I/O blocksize for filesystem */
- char *buffer; /* Data buffer for copy */
- size_t nread;
-
- if ((srcFd = open(src, O_RDONLY, 0)) < 0) {
- return TCL_ERROR;
- }
-
- dstFd = open(dst, O_CREAT | O_TRUNC | O_WRONLY, srcStatBufPtr->st_mode);
- if (dstFd < 0) {
- close(srcFd);
- return TCL_ERROR;
- }
-
- blockSize = srcStatBufPtr->st_blksize;
- buffer = ckalloc(blockSize);
- while (1) {
- nread = read(srcFd, buffer, blockSize);
- if ((nread == -1) || (nread == 0)) {
- break;
- }
- if (write(dstFd, buffer, nread) != nread) {
- nread = (size_t) -1;
- break;
- }
- }
-
- ckfree(buffer);
- close(srcFd);
- if ((close(dstFd) != 0) || (nread == -1)) {
- unlink(dst);
- return TCL_ERROR;
- }
- if (CopyFileAtts(src, dst, srcStatBufPtr) == TCL_ERROR) {
- /*
- * The copy succeeded, but setting the permissions failed, so be in
- * a consistent state, we remove the file that was created by the
- * copy.
- */
-
- unlink(dst);
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpDeleteFile --
- *
- * Removes a single file (not a directory).
- *
- * Results:
- * If the file was successfully deleted, returns TCL_OK. Otherwise
- * the return value is TCL_ERROR and errno is set to indicate the
- * error. Some possible values for errno are:
- *
- * EACCES: a parent directory can't be read and/or written.
- * EISDIR: path is a directory.
- * ENOENT: path doesn't exist or is "".
- *
- * Side effects:
- * The file is deleted, even if it is read-only.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpDeleteFile(path)
- char *path; /* Pathname of file to be removed. */
- {
- if (unlink(path) != 0) {
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpCreateDirectory --
- *
- * Creates the specified directory. All parent directories of the
- * specified directory must already exist. The directory is
- * automatically created with permissions so that user can access
- * the new directory and create new files or subdirectories in it.
- *
- * Results:
- * If the directory was successfully created, returns TCL_OK.
- * Otherwise the return value is TCL_ERROR and errno is set to
- * indicate the error. Some possible values for errno are:
- *
- * EACCES: a parent directory can't be read and/or written.
- * EEXIST: path already exists.
- * ENOENT: a parent directory doesn't exist.
- *
- * Side effects:
- * A directory is created with the current umask, except that
- * permission for u+rwx will always be added.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpCreateDirectory(path)
- char *path; /* Pathname of directory to create. */
- {
- mode_t mode;
-
- mode = umask(0);
- umask(mode);
-
- /*
- * umask return value is actually the inverse of the permissions.
- */
-
- mode = (0777 & ~mode);
-
- if (mkdir(path, mode | S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpCopyDirectory --
- *
- * Recursively copies a directory. The target directory dst must
- * not already exist. Note that this function does not merge two
- * directory hierarchies, even if the target directory is an an
- * empty directory.
- *
- * Results:
- * If the directory was successfully copied, returns TCL_OK.
- * Otherwise the return value is TCL_ERROR, errno is set to indicate
- * the error, and the pathname of the file that caused the error
- * is stored in errorPtr. See TclpCreateDirectory and TclpCopyFile
- * for a description of possible values for errno.
- *
- * Side effects:
- * An exact copy of the directory hierarchy src will be created
- * with the name dst. If an error occurs, the error will
- * be returned immediately, and remaining files will not be
- * processed.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpCopyDirectory(src, dst, errorPtr)
- char *src; /* Pathname of directory to be copied. */
- char *dst; /* Pathname of target directory. */
- Tcl_DString *errorPtr; /* If non-NULL, initialized DString for
- * error reporting. */
- {
- int result;
- Tcl_DString srcBuffer;
- Tcl_DString dstBuffer;
-
- Tcl_DStringInit(&srcBuffer);
- Tcl_DStringInit(&dstBuffer);
- Tcl_DStringAppend(&srcBuffer, src, -1);
- Tcl_DStringAppend(&dstBuffer, dst, -1);
- result = TraverseUnixTree(TraversalCopy, &srcBuffer, &dstBuffer,
- errorPtr);
- Tcl_DStringFree(&srcBuffer);
- Tcl_DStringFree(&dstBuffer);
- return result;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TclpRemoveDirectory --
- *
- * Removes directory (and its contents, if the recursive flag is set).
- *
- * Results:
- * If the directory was successfully removed, returns TCL_OK.
- * Otherwise the return value is TCL_ERROR, errno is set to indicate
- * the error, and the pathname of the file that caused the error
- * is stored in errorPtr. Some possible values for errno are:
- *
- * EACCES: path directory can't be read and/or written.
- * EEXIST: path is a non-empty directory.
- * EINVAL: path is a root directory.
- * ENOENT: path doesn't exist or is "".
- * ENOTDIR: path is not a directory.
- *
- * Side effects:
- * Directory removed. If an error occurs, the error will be returned
- * immediately, and remaining files will not be deleted.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpRemoveDirectory(path, recursive, errorPtr)
- char *path; /* Pathname of directory to be removed. */
- int recursive; /* If non-zero, removes directories that
- * are nonempty. Otherwise, will only remove
- * empty directories. */
- Tcl_DString *errorPtr; /* If non-NULL, initialized DString for
- * error reporting. */
- {
- int result;
- Tcl_DString buffer;
-
- if (rmdir(path) == 0) {
- return TCL_OK;
- }
- if (errno == ENOTEMPTY) {
- errno = EEXIST;
- }
- if ((errno != EEXIST) || (recursive == 0)) {
- if (errorPtr != NULL) {
- Tcl_DStringAppend(errorPtr, path, -1);
- }
- return TCL_ERROR;
- }
-
- /*
- * The directory is nonempty, but the recursive flag has been
- * specified, so we recursively remove all the files in the directory.
- */
-
- Tcl_DStringInit(&buffer);
- Tcl_DStringAppend(&buffer, path, -1);
- result = TraverseUnixTree(TraversalDelete, &buffer, NULL, errorPtr);
- Tcl_DStringFree(&buffer);
- return result;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TraverseUnixTree --
- *
- * Traverse directory tree specified by sourcePtr, calling the function
- * traverseProc for each file and directory encountered. If destPtr
- * is non-null, each of name in the sourcePtr directory is appended to
- * the directory specified by destPtr and passed as the second argument
- * to traverseProc() .
- *
- * Results:
- * Standard Tcl result.
- *
- * Side effects:
- * None caused by TraverseUnixTree, however the user specified
- * traverseProc() may change state. If an error occurs, the error will
- * be returned immediately, and remaining files will not be processed.
- *
- *---------------------------------------------------------------------------
- */
-
- static int
- TraverseUnixTree(traverseProc, sourcePtr, targetPtr, errorPtr)
- TraversalProc *traverseProc;/* Function to call for every file and
- * directory in source hierarchy. */
- Tcl_DString *sourcePtr; /* Pathname of source directory to be
- * traversed. */
- Tcl_DString *targetPtr; /* Pathname of directory to traverse in
- * parallel with source directory. */
- Tcl_DString *errorPtr; /* If non-NULL, an initialized DString for
- * error reporting. */
- {
- struct stat statbuf;
- char *source, *target, *errfile;
- int result, sourceLen;
- int targetLen = 0; /* Initialization needed only to prevent
- * warning in gcc. */
- struct dirent *dirp;
- DIR *dp;
-
- result = TCL_OK;
- source = Tcl_DStringValue(sourcePtr);
- if (targetPtr != NULL) {
- target = Tcl_DStringValue(targetPtr);
- } else {
- target = NULL;
- }
-
- errfile = NULL;
- if (lstat(source, &statbuf) != 0) {
- errfile = source;
- goto end;
- }
- if (!S_ISDIR(statbuf.st_mode)) {
- /*
- * Process the regular file
- */
-
- return (*traverseProc)(source, target, &statbuf, DOTREE_F, errorPtr);
- }
-
- dp = opendir(source);
- if (dp == NULL) {
- /*
- * Can't read directory
- */
-
- errfile = source;
- goto end;
- }
- result = (*traverseProc)(source, target, &statbuf, DOTREE_PRED, errorPtr);
- if (result != TCL_OK) {
- closedir(dp);
- return result;
- }
-
- Tcl_DStringAppend(sourcePtr, "/", 1);
- source = Tcl_DStringValue(sourcePtr);
- sourceLen = Tcl_DStringLength(sourcePtr);
-
- if (targetPtr != NULL) {
- Tcl_DStringAppend(targetPtr, "/", 1);
- target = Tcl_DStringValue(targetPtr);
- targetLen = Tcl_DStringLength(targetPtr);
- }
-
- while ((dirp = readdir(dp)) != NULL) {
- if ((strcmp(dirp->d_name, ".") == 0)
- || (strcmp(dirp->d_name, "..") == 0)) {
- continue;
- }
-
- /*
- * Append name after slash, and recurse on the file.
- */
-
- Tcl_DStringAppend(sourcePtr, dirp->d_name, -1);
- if (targetPtr != NULL) {
- Tcl_DStringAppend(targetPtr, dirp->d_name, -1);
- }
- result = TraverseUnixTree(traverseProc, sourcePtr, targetPtr,
- errorPtr);
- if (result != TCL_OK) {
- break;
- }
-
- /*
- * Remove name after slash.
- */
-
- Tcl_DStringSetLength(sourcePtr, sourceLen);
- if (targetPtr != NULL) {
- Tcl_DStringSetLength(targetPtr, targetLen);
- }
- }
- closedir(dp);
-
- /*
- * Strip off the trailing slash we added
- */
-
- Tcl_DStringSetLength(sourcePtr, sourceLen - 1);
- source = Tcl_DStringValue(sourcePtr);
- if (targetPtr != NULL) {
- Tcl_DStringSetLength(targetPtr, targetLen - 1);
- target = Tcl_DStringValue(targetPtr);
- }
-
- if (result == TCL_OK) {
- /*
- * Call traverseProc() on a directory after visiting all the
- * files in that directory.
- */
-
- result = (*traverseProc)(source, target, &statbuf, DOTREE_POSTD,
- errorPtr);
- }
- end:
- if (errfile != NULL) {
- if (errorPtr != NULL) {
- Tcl_DStringAppend(errorPtr, errfile, -1);
- }
- result = TCL_ERROR;
- }
-
- return result;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * TraversalCopy
- *
- * Called from TraverseUnixTree in order to execute a recursive copy of a
- * directory.
- *
- * Results:
- * Standard Tcl result.
- *
- * Side effects:
- * The file or directory src may be copied to dst, depending on
- * the value of type.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- TraversalCopy(src, dst, sbPtr, type, errorPtr)
- char *src; /* Source pathname to copy. */
- char *dst; /* Destination pathname of copy. */
- struct stat *sbPtr; /* Stat info for file specified by src. */
- int type; /* Reason for call - see TraverseUnixTree(). */
- Tcl_DString *errorPtr; /* If non-NULL, initialized DString for
- * error return. */
- {
- switch (type) {
- case DOTREE_F:
- if (TclpCopyFile(src, dst) == TCL_OK) {
- return TCL_OK;
- }
- break;
-
- case DOTREE_PRED:
- if (TclpCreateDirectory(dst) == TCL_OK) {
- return TCL_OK;
- }
- break;
-
- case DOTREE_POSTD:
- if (CopyFileAtts(src, dst, sbPtr) == TCL_OK) {
- return TCL_OK;
- }
- break;
-
- }
-
- /*
- * There shouldn't be a problem with src, because we already
- * checked it to get here.
- */
-
- if (errorPtr != NULL) {
- Tcl_DStringAppend(errorPtr, dst, -1);
- }
- return TCL_ERROR;
- }
-
- /*
- *---------------------------------------------------------------------------
- *
- * TraversalDelete --
- *
- * Called by procedure TraverseUnixTree for every file and directory
- * that it encounters in a directory hierarchy. This procedure unlinks
- * files, and removes directories after all the containing files
- * have been processed.
- *
- * Results:
- * Standard Tcl result.
- *
- * Side effects:
- * Files or directory specified by src will be deleted.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- TraversalDelete(src, ignore, sbPtr, type, errorPtr)
- char *src; /* Source pathname. */
- char *ignore; /* Destination pathname (not used). */
- struct stat *sbPtr; /* Stat info for file specified by src. */
- int type; /* Reason for call - see TraverseUnixTree(). */
- Tcl_DString *errorPtr; /* If non-NULL, initialized DString for
- * error return. */
- {
- switch (type) {
- case DOTREE_F:
- if (unlink(src) == 0) {
- return TCL_OK;
- }
- break;
-
- case DOTREE_PRED:
- return TCL_OK;
-
- case DOTREE_POSTD:
- if (rmdir(src) == 0) {
- return TCL_OK;
- }
- break;
-
- }
-
- if (errorPtr != NULL) {
- Tcl_DStringAppend(errorPtr, src, -1);
- }
- return TCL_ERROR;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * CopyFileAtts
- *
- * Copy the file attributes such as owner, group, permissions, and
- * modification date from one file to another.
- *
- * Results:
- * Standard Tcl result.
- *
- * Side effects:
- * user id, group id, permission bits, last modification time, and
- * last access time are updated in the new file to reflect the old
- * file.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- CopyFileAtts(src, dst, statBufPtr)
- char *src; /* Path name of source file */
- char *dst; /* Path name of target file */
- struct stat *statBufPtr; /* ptr to stat info for source file */
- {
- struct utimbuf tval;
- mode_t newMode;
-
- newMode = statBufPtr->st_mode
- & (S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO);
-
- /*
- * Note that if you copy a setuid file that is owned by someone
- * else, and you are not root, then the copy will be setuid to you.
- * The most correct implementation would probably be to have the
- * copy not setuid to anyone if the original file was owned by
- * someone else, but this corner case isn't currently handled.
- * It would require another lstat(), or getuid().
- */
-
- if (chmod(dst, newMode)) {
- newMode &= ~(S_ISUID | S_ISGID);
- if (chmod(dst, newMode)) {
- return TCL_ERROR;
- }
- }
-
- tval.actime = statBufPtr->st_atime;
- tval.modtime = statBufPtr->st_mtime;
-
- if (utime(dst, &tval)) {
- return TCL_ERROR;
- }
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetGroupAttribute
- *
- * Gets the group attribute of a file.
- *
- * Results:
- * Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr
- * if there is no error.
- *
- * Side effects:
- * A new object is allocated.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetGroupAttribute(interp, objIndex, fileName, attributePtrPtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj **attributePtrPtr; /* A pointer to return the object with. */
- {
- struct stat statBuf;
- struct group *groupPtr;
-
- if (stat(fileName, &statBuf) != 0) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not stat file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- groupPtr = getgrgid(statBuf.st_gid);
- if (groupPtr == NULL) {
- endgrent();
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not get group for file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- *attributePtrPtr = Tcl_NewStringObj(groupPtr->gr_name, -1);
- endgrent();
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetOwnerAttribute
- *
- * Gets the owner attribute of a file.
- *
- * Results:
- * Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr
- * if there is no error.
- *
- * Side effects:
- * A new object is allocated.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetOwnerAttribute(interp, objIndex, fileName, attributePtrPtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj **attributePtrPtr; /* A pointer to return the object with. */
- {
- struct stat statBuf;
- struct passwd *pwPtr;
-
- if (stat(fileName, &statBuf) != 0) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not stat file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- pwPtr = getpwuid(statBuf.st_uid);
- if (pwPtr == NULL) {
- endpwent();
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not get owner for file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- *attributePtrPtr = Tcl_NewStringObj(pwPtr->pw_name, -1);
- endpwent();
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * GetPermissionsAttribute
- *
- * Gets the group attribute of a file.
- *
- * Results:
- * Standard TCL result. Returns a new Tcl_Obj in attributePtrPtr
- * if there is no error. The object will have ref count 0.
- *
- * Side effects:
- * A new object is allocated.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- GetPermissionsAttribute(interp, objIndex, fileName, attributePtrPtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj **attributePtrPtr; /* A pointer to return the object with. */
- {
- struct stat statBuf;
- char returnString[6];
-
- if (stat(fileName, &statBuf) != 0) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not stat file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- sprintf(returnString, "%0#5lo", (statBuf.st_mode & 0x00007FFF));
-
- *attributePtrPtr = Tcl_NewStringObj(returnString, -1);
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * SetGroupAttribute
- *
- * Sets the file to the given group.
- *
- * Results:
- * Standard TCL result.
- *
- * Side effects:
- * The group of the file is changed.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- SetGroupAttribute(interp, objIndex, fileName, attributePtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj *attributePtr; /* The attribute to set. */
- {
- gid_t groupNumber;
- long placeHolder;
-
- if (Tcl_GetLongFromObj(interp, attributePtr, &placeHolder) != TCL_OK) {
- struct group *groupPtr;
- char *groupString = Tcl_GetStringFromObj(attributePtr, NULL);
-
- Tcl_ResetResult(interp);
- groupPtr = getgrnam(groupString);
- if (groupPtr == NULL) {
- endgrent();
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not set group for file \"", fileName,
- "\": group \"", groupString, "\" does not exist",
- (char *) NULL);
- return TCL_ERROR;
- }
- groupNumber = groupPtr->gr_gid;
- } else {
- groupNumber = (gid_t) placeHolder;
- }
-
- if (chown(fileName, -1, groupNumber) != 0) {
- endgrent();
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not set group for file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
- endgrent();
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * SetOwnerAttribute
- *
- * Sets the file to the given owner.
- *
- * Results:
- * Standard TCL result.
- *
- * Side effects:
- * The group of the file is changed.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- SetOwnerAttribute(interp, objIndex, fileName, attributePtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj *attributePtr; /* The attribute to set. */
- {
- uid_t userNumber;
- long placeHolder;
-
- if (Tcl_GetLongFromObj(interp, attributePtr, &placeHolder) != TCL_OK) {
- struct passwd *pwPtr;
- char *ownerString = Tcl_GetStringFromObj(attributePtr, NULL);
-
- Tcl_ResetResult(interp);
- pwPtr = getpwnam(ownerString);
- if (pwPtr == NULL) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not set owner for file \"", fileName,
- "\": user \"", ownerString, "\" does not exist",
- (char *) NULL);
- return TCL_ERROR;
- }
- userNumber = pwPtr->pw_uid;
- } else {
- userNumber = (uid_t) placeHolder;
- }
-
- if (chown(fileName, userNumber, -1) != 0) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not set owner for file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
-
- return TCL_OK;
- }
-
- /*
- *----------------------------------------------------------------------
- *
- * SetPermissionsAttribute
- *
- * Sets the file to the given group.
- *
- * Results:
- * Standard TCL result.
- *
- * Side effects:
- * The group of the file is changed.
- *
- *----------------------------------------------------------------------
- */
-
- static int
- SetPermissionsAttribute(interp, objIndex, fileName, attributePtr)
- Tcl_Interp *interp; /* The interp we are using for errors. */
- int objIndex; /* The index of the attribute. */
- char *fileName; /* The name of the file. */
- Tcl_Obj *attributePtr; /* The attribute to set. */
- {
- long modeInt;
- mode_t newMode;
-
- /*
- * mode_t is a long under SPARC; an int under SunOS. Since we do not
- * know how big it really is, we get the long and then cast it
- * down to a mode_t.
- */
-
- if (Tcl_GetLongFromObj(interp, attributePtr, &modeInt)
- != TCL_OK) {
- return TCL_ERROR;
- }
-
- newMode = (mode_t) modeInt;
-
- if (chmod(fileName, newMode) != 0) {
- Tcl_AppendStringsToObj(Tcl_GetObjResult(interp),
- "could not set permissions for file \"", fileName, "\": ",
- Tcl_PosixError(interp), (char *) NULL);
- return TCL_ERROR;
- }
- return TCL_OK;
- }
- /*
- *---------------------------------------------------------------------------
- *
- * TclpListVolumes --
- *
- * Lists the currently mounted volumes, which on UNIX is just /.
- *
- * Results:
- * A standard Tcl result. Will always be TCL_OK, since there is no way
- * that this command can fail. Also, the interpreter's result is set to
- * the list of volumes.
- *
- * Side effects:
- * None.
- *
- *---------------------------------------------------------------------------
- */
-
- int
- TclpListVolumes(interp)
- Tcl_Interp *interp; /* Interpreter to which to pass
- * the volume list. */
- {
- Tcl_Obj *resultPtr;
-
- resultPtr = Tcl_GetObjResult(interp);
- Tcl_SetStringObj(resultPtr, "/", 1);
- return TCL_OK;
- }
-
-