BSD 4.4 Lite bin Sources

5 files changed, 998 insertions, 0 deletions

diff --git a/bin/cp/Makefile b/bin/cp/Makefile
new file mode 100644
index 0000000..ad07b68
--- /dev/null
+++ b/bin/cp/Makefile
@@ -0,0 +1,6 @@
+#	@(#)Makefile	8.1 (Berkeley) 5/31/93
+
+PROG=	cp
+SRCS=	cp.c utils.c
+
+.include <bsd.prog.mk>
diff --git a/bin/cp/cp.1 b/bin/cp/cp.1
new file mode 100644
index 0000000..f04d37b
--- /dev/null
+++ b/bin/cp/cp.1
@@ -0,0 +1,211 @@
+.\" Copyright (c) 1989, 1990, 1993, 1994
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" the Institute of Electrical and Electronics Engineers, Inc.
+.\"
+.\" 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.
+.\"
+.\"	@(#)cp.1	8.3 (Berkeley) 4/18/94
+.\"
+.Dd April 18, 1994
+.Dt CP 1
+.Os BSD 4
+.Sh NAME
+.Nm cp
+.Nd copy files
+.Sh SYNOPSIS
+.Nm cp
+.Oo
+.Fl R
+.Op Fl H | Fl L | Fl P
+.Oc
+.Op Fl fip
+.Ar source_file target_file
+.Nm cp
+.Oo
+.Fl R
+.Op Fl H | Fl L | Fl P
+.Oc
+.Op Fl fip
+.Ar source_file ... target_directory
+.Sh DESCRIPTION
+In the first synopsis form, the
+.Nm cp
+utility copies the contents of the
+.Ar source_file
+to the
+.Ar target_file .
+In the second synopsis form,
+the contents of each named
+.Ar source_file
+is copied to the destination
+.Ar target_directory .
+The names of the files themselves are not changed.
+If
+.Nm cp
+detects an attempt to copy a file to itself, the copy will fail.
+.Pp
+The following options are available:
+.Bl -tag -width flag
+.It Fl H
+If the
+.Fl R
+option is specified, symbolic links on the command line are followed.
+(Symbolic links encountered in the tree traversal are not followed.)
+.It Fl L
+If the
+.Fl R
+option is specified, all symbolic links are followed.
+.It Fl P
+If the
+.Fl R
+option is specified, no symbolic links are followed.
+.It Fl R
+If
+.Ar source_file
+designates a directory,
+.Nm cp
+copies the directory and the entire subtree connected at that point.
+This option also causes symbolic links to be copied, rather than
+indirected through, and for
+.Nm cp
+to create special files rather than copying them as normal files.
+Created directories have the same mode as the corresponding source
+directory, unmodified by the process' umask.
+.It Fl f
+For each existing destination pathname, remove it and
+create a new file, without prompting for confirmation
+regardless of its permissions.
+(The
+.Fl i
+option is ignored if the
+.Fl f
+option is specified.)
+.It Fl i
+Causes
+.Nm cp
+to write a prompt to the standard error output before copying a file
+that would overwrite an existing file.
+If the response from the standard input begins with the character
+.Sq Li y ,
+the file copy is attempted.
+.It Fl p
+Causes
+.Nm cp
+to preserve in the copy as many of the modification time, access time,
+file flags, file mode, user ID, and group ID as allowed by permissions.
+.Pp
+If the user ID and group ID cannot be preserved, no error message
+is displayed and the exit value is not altered.
+.Pp
+If the source file has its set user ID bit on and the user ID cannot
+be preserved, the set user ID bit is not preserved
+in the copy's permissions.
+If the source file has its set group ID bit on and the group ID cannot
+be preserved, the set group ID bit is not preserved
+in the copy's permissions.
+If the source file has both its set user ID and set group ID bits on,
+and either the user ID or group ID cannot be preserved, neither
+the set user ID or set group ID bits are preserved in the copy's
+permissions.
+.El
+.Pp
+For each destination file that already exists, its contents are
+overwritten if permissions allow, but its mode, user ID, and group
+ID are unchanged.
+.Pp
+In the second synopsis form, 
+.Ar target_directory 
+must exist unless there is only one named
+.Ar source_file
+which is a directory and the 
+.Fl R 
+flag is specified.
+.Pp
+If the destination file does not exist, the mode of the source file is
+used as modified by the file mode creation mask
+.Pf ( Ic umask ,
+see
+.Xr csh 1 ) .
+If the source file has its set user ID bit on, that bit is removed
+unless both the source file and the destination file are owned by the
+same user.
+If the source file has its set group ID bit on, that bit is removed
+unless both the source file and the destination file are in the same
+group and the user is a member of that group.
+If both the set user ID and set group ID bits are set, all of the above
+conditions must be fulfilled or both bits are removed.
+.Pp
+Appropriate permissions are required for file creation or overwriting.
+.Pp
+Symbolic links are always followed unless the 
+.Fl R 
+flag is set, in which case symbolic links are not followed, by default.
+The
+.Fl H
+or 
+.Fl L
+flags (in conjunction with the
+.Fl R
+flag) cause symbolic links to be followed as described above.
+The
+.Fl H ,
+.Fl L
+and
+.Fl P
+options are ignored unless the
+.Fl R
+option is specified.
+In addition, these options override each other and the
+command's actions are determined by the last one specified.
+.Pp
+.Nm Cp
+exits 0 on success, >0 if an error occurred.
+.Sh COMPATIBILITY
+Historic versions of the
+.Nm cp
+utility had a
+.Fl r
+option.
+This implementation supports that option, however, its use is strongly
+discouraged, as it does not correctly copy special files, symbolic links
+or fifo's.
+.Sh SEE ALSO
+.Xr mv 1 ,
+.Xr rcp 1 ,
+.Xr umask 2 , 
+.Xr fts 3 ,
+.Xr symlink 7
+.Sh HISTORY
+The
+.Nm cp
+command is expected to be
+.St -p1003.2
+compatible.
diff --git a/bin/cp/cp.c b/bin/cp/cp.c
new file mode 100644
index 0000000..b58bb99
--- /dev/null
+++ b/bin/cp/cp.c
@@ -0,0 +1,441 @@
+/*
+ * Copyright (c) 1988, 1993, 1994
+ *	The Regents of the University of California.  All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * David Hitz of Auspex Systems Inc.
+ *
+ * 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.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1988, 1993, 1994\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)cp.c	8.2 (Berkeley) 4/1/94";
+#endif /* not lint */
+
+/*
+ * Cp copies source files to target files.
+ * 
+ * The global PATH_T structure "to" always contains the path to the
+ * current target file.  Since fts(3) does not change directories,
+ * this path can be either absolute or dot-realative.
+ * 
+ * The basic algorithm is to initialize "to" and use fts(3) to traverse
+ * the file hierarchy rooted in the argument list.  A trivial case is the
+ * case of 'cp file1 file2'.  The more interesting case is the case of
+ * 'cp file1 file2 ... fileN dir' where the hierarchy is traversed and the
+ * path (relative to the root of the traversal) is appended to dir (stored
+ * in "to") to form the final target path.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+
+#include <dirent.h>
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "extern.h"
+
+#define	STRIP_TRAILING_SLASH(p) {					\
+        while ((p).p_end > (p).p_path && (p).p_end[-1] == '/')		\
+                *--(p).p_end = 0;					\
+}
+
+PATH_T to = { to.p_path, "" };
+
+uid_t myuid;
+int Rflag, iflag, pflag, rflag;
+int myumask;
+
+enum op { FILE_TO_FILE, FILE_TO_DIR, DIR_TO_DNE };
+
+int copy __P((char *[], enum op, int));
+int mastercmp __P((const FTSENT **, const FTSENT **));
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	struct stat to_stat, tmp_stat;
+	enum op type;
+	int Hflag, Lflag, Pflag, ch, fts_options, r;
+	char *target;
+
+	Hflag = Lflag = Pflag = Rflag = 0;
+	while ((ch = getopt(argc, argv, "HLPRfipr")) != EOF) 
+		switch (ch) {
+		case 'H':
+			Hflag = 1;
+			Lflag = Pflag = 0;
+			break;
+		case 'L':
+			Lflag = 1;
+			Hflag = Pflag = 0;
+			break;
+		case 'P':
+			Pflag = 1;
+			Hflag = Lflag = 0;
+			break;
+		case 'R':
+			Rflag = 1;
+			break;
+		case 'f':
+			iflag = 0;
+			break;
+		case 'i':
+			iflag = isatty(fileno(stdin));
+			break;
+		case 'p':
+			pflag = 1;
+			break;
+		case 'r':
+			rflag = 1;
+			break;
+		case '?':
+		default:
+			usage();
+			break;
+		}
+	argc -= optind;
+	argv += optind;
+
+	if (argc < 2)
+		usage();
+
+	fts_options = FTS_NOCHDIR | FTS_PHYSICAL;
+	if (rflag) {
+		if (Rflag)
+			errx(1,
+		    "the -R and -r options may not be specified together.");
+		if (Hflag || Lflag || Pflag)
+			errx(1,
+	"the -H, -L, and -P options may not be specified with the -r option.");
+		fts_options &= ~FTS_PHYSICAL;
+		fts_options |= FTS_LOGICAL;
+	}
+	if (Rflag) {
+		if (Hflag)
+			fts_options |= FTS_COMFOLLOW;
+		if (Lflag) {
+			fts_options &= ~FTS_PHYSICAL;
+			fts_options |= FTS_LOGICAL;
+		}
+	} else {
+		fts_options &= ~FTS_PHYSICAL;
+		fts_options |= FTS_LOGICAL;
+	}
+
+	myuid = getuid();
+
+	/* Copy the umask for explicit mode setting. */
+	myumask = umask(0);
+	(void)umask(myumask);
+
+	/* Save the target base in "to". */
+	target = argv[--argc];
+	if (strlen(target) > MAXPATHLEN)
+		errx(1, "%s: name too long", target);
+	(void)strcpy(to.p_path, target);
+	to.p_end = to.p_path + strlen(to.p_path);
+        if (to.p_path == to.p_end) {
+		*to.p_end++ = '.';
+		*to.p_end = 0;
+	}
+        STRIP_TRAILING_SLASH(to);
+	to.target_end = to.p_end;
+
+	/* Set end of argument list for fts(3). */
+	argv[argc] = NULL;     
+	
+	/*
+	 * Cp has two distinct cases:
+	 *
+	 * cp [-R] source target
+	 * cp [-R] source1 ... sourceN directory
+	 *
+	 * In both cases, source can be either a file or a directory.
+	 *
+	 * In (1), the target becomes a copy of the source. That is, if the
+	 * source is a file, the target will be a file, and likewise for
+	 * directories.
+	 *
+	 * In (2), the real target is not directory, but "directory/source".
+	 */
+	r = stat(to.p_path, &to_stat);
+	if (r == -1 && errno != ENOENT)
+		err(1, "%s", to.p_path);
+	if (r == -1 || !S_ISDIR(to_stat.st_mode)) {
+		/*
+		 * Case (1).  Target is not a directory.
+		 */ 
+		if (argc > 1) {
+			usage();
+			exit(1);
+		}
+		/*
+		 * Need to detect the case:
+		 *	cp -R dir foo
+		 * Where dir is a directory and foo does not exist, where
+		 * we want pathname concatenations turned on but not for
+		 * the initial mkdir().
+		 */
+		if (r == -1) {
+			if (rflag || (Rflag && (Lflag || Hflag)))
+				stat(*argv, &tmp_stat);
+			else
+				lstat(*argv, &tmp_stat);
+			
+			if (S_ISDIR(tmp_stat.st_mode) && (Rflag || rflag))
+				type = DIR_TO_DNE;
+			else
+				type = FILE_TO_FILE;
+		} else
+			type = FILE_TO_FILE;
+	} else
+		/*
+		 * Case (2).  Target is a directory.
+		 */
+		type = FILE_TO_DIR;
+
+	exit (copy(argv, type, fts_options));
+}
+
+int
+copy(argv, type, fts_options)
+	char *argv[];
+	enum op type;
+	int fts_options;
+{
+	struct stat to_stat;
+	FTS *ftsp;
+	FTSENT *curr;
+	int base, dne, nlen, rval;
+	char *p;
+
+	if ((ftsp = fts_open(argv, fts_options, mastercmp)) == NULL)
+		err(1, NULL);
+	for (rval = 0; (curr = fts_read(ftsp)) != NULL;) {
+		switch (curr->fts_info) {
+		case FTS_NS:
+		case FTS_ERR:
+			warnx("%s: %s",
+			    curr->fts_path, strerror(curr->fts_errno));
+			rval = 1;
+			continue;
+		case FTS_DC:			/* Warn, continue. */
+			warnx("%s: directory causes a cycle", curr->fts_path);
+			rval = 1;
+			continue;
+		case FTS_DP:			/* Ignore, continue. */
+			continue;
+		}
+
+		/*
+		 * If we are in case (2) or (3) above, we need to append the 
+                 * source name to the target name.  
+                 */
+		if (type != FILE_TO_FILE) {
+			if ((curr->fts_namelen +
+			    to.target_end - to.p_path + 1) > MAXPATHLEN) {
+				warnx("%s/%s: name too long (not copied)", 
+				    to.p_path, curr->fts_name);
+				rval = 1;
+				continue;
+			}
+
+			/*
+			 * Need to remember the roots of traversals to create
+			 * correct pathnames.  If there's a directory being
+			 * copied to a non-existent directory, e.g.
+			 *	cp -R a/dir noexist
+			 * the resulting path name should be noexist/foo, not
+			 * noexist/dir/foo (where foo is a file in dir), which
+			 * is the case where the target exists.
+			 *
+			 * Also, check for "..".  This is for correct path
+			 * concatentation for paths ending in "..", e.g.
+			 *	cp -R .. /tmp
+			 * Paths ending in ".." are changed to ".".  This is
+			 * tricky, but seems the easiest way to fix the problem.
+			 *
+			 * XXX
+			 * Since the first level MUST be FTS_ROOTLEVEL, base
+			 * is always initialized.
+			 */
+			if (curr->fts_level == FTS_ROOTLEVEL)
+				if (type != DIR_TO_DNE) {
+					p = strrchr(curr->fts_path, '/');
+					base = (p == NULL) ? 0 : 
+					    (int)(p - curr->fts_path + 1);
+
+					if (!strcmp(&curr->fts_path[base], 
+					    ".."))
+						base += 1;
+				} else
+					base = curr->fts_pathlen;
+
+			if (to.target_end[-1] != '/') {
+				*to.target_end = '/';
+				*(to.target_end + 1) = 0;
+			}
+			p = &curr->fts_path[base];
+			nlen = curr->fts_pathlen - base;
+
+			(void)strncat(to.target_end + 1, p, nlen);
+			to.p_end = to.target_end + nlen + 1;
+			*to.p_end = 0;
+			STRIP_TRAILING_SLASH(to);
+		}
+
+		/* Not an error but need to remember it happened */
+		if (stat(to.p_path, &to_stat) == -1)
+			dne = 1;
+		else {
+			if (to_stat.st_dev == curr->fts_statp->st_dev &&
+			    to_stat.st_ino == curr->fts_statp->st_ino) {
+				warnx("%s and %s are identical (not copied).",
+				    to.p_path, curr->fts_path);
+				rval = 1;
+				if (S_ISDIR(curr->fts_statp->st_mode))
+					(void)fts_set(ftsp, curr, FTS_SKIP);
+				continue;
+			}
+			dne = 0;
+		}
+
+		switch (curr->fts_statp->st_mode & S_IFMT) {
+		case S_IFLNK:
+			if (copy_link(curr, !dne))
+				rval = 1;
+			break;
+		case S_IFDIR:
+			if (!Rflag && !rflag) {
+				warnx("%s is a directory (not copied).",
+				    curr->fts_path);
+				(void)fts_set(ftsp, curr, FTS_SKIP);
+				rval = 1;
+				break;
+			}
+			/*
+			 * If the directory doesn't exist, create the new
+			 * one with the from file mode plus owner RWX bits,
+			 * modified by the umask.  Trade-off between being
+			 * able to write the directory (if from directory is
+			 * 555) and not causing a permissions race.  If the
+			 * umask blocks owner writes, we fail..
+			 */
+			if (dne) {
+				if (mkdir(to.p_path, 
+				    curr->fts_statp->st_mode | S_IRWXU) < 0)
+					err(1, "%s", to.p_path);
+			} else if (!S_ISDIR(to_stat.st_mode)) {
+				errno = ENOTDIR;
+				err(1, "%s: %s", to.p_path);
+			}
+			/*
+			 * If not -p and directory didn't exist, set it to be
+			 * the same as the from directory, umodified by the 
+                         * umask; arguably wrong, but it's been that way 
+                         * forever.
+			 */
+			if (pflag && setfile(curr->fts_statp, 0))
+				rval = 1;
+			else if (dne)
+				(void)chmod(to.p_path, 
+				    curr->fts_statp->st_mode);
+			break;
+		case S_IFBLK:
+		case S_IFCHR:
+			if (Rflag) {
+				if (copy_special(curr->fts_statp, !dne))
+					rval = 1;
+			} else
+				if (copy_file(curr, dne))
+					rval = 1;
+			break;
+		case S_IFIFO:
+			if (Rflag)
+				if (copy_fifo(curr->fts_statp, !dne))
+					rval = 1;
+			else 
+				if (copy_file(curr, dne))
+					rval = 1;
+			break;
+		default:
+			if (copy_file(curr, dne))
+				rval = 1;
+			break;
+		}
+	}
+	if (errno)
+		err(1, "fts_read");
+	return (rval);
+}
+
+/*
+ * mastercmp --
+ *	The comparison function for the copy order.  The order is to copy
+ *	non-directory files before directory files.  The reason for this
+ *	is because files tend to be in the same cylinder group as their
+ *	parent directory, whereas directories tend not to be.  Copying the
+ *	files first reduces seeking.
+ */
+int
+mastercmp(a, b)
+	const FTSENT **a, **b;
+{
+	int a_info, b_info;
+
+	a_info = (*a)->fts_info;
+	if (a_info == FTS_ERR || a_info == FTS_NS || a_info == FTS_DNR)
+		return (0);
+	b_info = (*b)->fts_info;
+	if (b_info == FTS_ERR || b_info == FTS_NS || b_info == FTS_DNR)
+		return (0);
+	if (a_info == FTS_D)
+		return (-1);
+	if (b_info == FTS_D)
+		return (1);
+	return (0);
+}
diff --git a/bin/cp/extern.h b/bin/cp/extern.h
new file mode 100644
index 0000000..6c7c6e2
--- /dev/null
+++ b/bin/cp/extern.h
@@ -0,0 +1,55 @@
+/*-
+ * Copyright (c) 1991, 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.
+ *
+ *	@(#)extern.h	8.2 (Berkeley) 4/1/94
+ */
+
+typedef struct {
+	char *p_end;			/* pointer to NULL at end of path */
+	char *target_end;               /* pointer to end of target base */
+	char p_path[MAXPATHLEN + 1];	/* pointer to the start of a path */
+} PATH_T;
+
+extern PATH_T to;
+extern uid_t myuid;
+extern int iflag, pflag, myumask;
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+int	copy_fifo __P((struct stat *, int));
+int	copy_file __P((FTSENT *, int));
+int	copy_link __P((FTSENT *, int));
+int	copy_special __P((struct stat *, int));
+int	setfile __P((struct stat *, int));
+void	usage __P((void));
+__END_DECLS
diff --git a/bin/cp/utils.c b/bin/cp/utils.c
new file mode 100644
index 0000000..5a5edcb
--- /dev/null
+++ b/bin/cp/utils.c
@@ -0,0 +1,285 @@
+/*-
+ * Copyright (c) 1991, 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.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)utils.c	8.3 (Berkeley) 4/1/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+#include <sys/time.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <fts.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "extern.h"
+
+int
+copy_file(entp, dne)
+	FTSENT *entp;
+	int dne;
+{
+	static char buf[MAXBSIZE];
+	struct stat to_stat, *fs;
+	int ch, checkch, from_fd, rcount, rval, to_fd, wcount;
+#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
+	char *p;
+#endif
+	
+	if ((from_fd = open(entp->fts_path, O_RDONLY, 0)) == -1) {
+		warn("%s", entp->fts_path);
+		return (1);
+	}
+
+	fs = entp->fts_statp;
+
+	/*
+	 * If the file exists and we're interactive, verify with the user.
+	 * If the file DNE, set the mode to be the from file, minus setuid
+	 * bits, modified by the umask; arguably wrong, but it makes copying
+	 * executables work right and it's been that way forever.  (The
+	 * other choice is 666 or'ed with the execute bits on the from file
+	 * modified by the umask.)
+	 */
+	if (!dne) {
+		if (iflag) {
+			(void)fprintf(stderr, "overwrite %s? ", to.p_path);
+			checkch = ch = getchar();
+			while (ch != '\n' && ch != EOF)
+				ch = getchar();
+			if (checkch != 'y') {
+				(void)close(from_fd);
+				return (0);
+			}
+		}
+		to_fd = open(to.p_path, O_WRONLY | O_TRUNC, 0);
+	} else
+		to_fd = open(to.p_path, O_WRONLY | O_TRUNC | O_CREAT,
+		    fs->st_mode & ~(S_ISUID | S_ISGID));
+
+	if (to_fd == -1) {
+		warn("%s", to.p_path);
+		(void)close(from_fd);
+		return (1);;
+	}
+
+	rval = 0;
+
+	/*
+	 * Mmap and write if less than 8M (the limit is so we don't totally
+	 * trash memory on big files.  This is really a minor hack, but it
+	 * wins some CPU back.
+	 */
+#ifdef VM_AND_BUFFER_CACHE_SYNCHRONIZED
+	if (fs->st_size <= 8 * 1048576) {
+		if ((p = mmap(NULL, (size_t)fs->st_size, PROT_READ,
+		    0, from_fd, (off_t)0)) == (char *)-1) {
+			warn("%s", entp->fts_path);
+			rval = 1;
+		} else {
+			if (write(to_fd, p, fs->st_size) != fs->st_size) {
+				warn("%s", to.p_path);
+				rval = 1;
+			}
+			/* Some systems don't unmap on close(2). */
+			if (munmap(p, fs->st_size) < 0) {
+				warn("%s", entp->fts_path);
+				rval = 1;
+			}
+		}
+	} else
+#endif
+	{
+		while ((rcount = read(from_fd, buf, MAXBSIZE)) > 0) {
+			wcount = write(to_fd, buf, rcount);
+			if (rcount != wcount || wcount == -1) {
+				warn("%s", to.p_path);
+				rval = 1;
+				break;
+			}
+		}
+		if (rcount < 0) {
+			warn("%s", entp->fts_path);
+			rval = 1;
+		}
+	}
+
+	/* If the copy went bad, lose the file. */
+	if (rval == 1) {
+		(void)unlink(to.p_path);
+		(void)close(from_fd);
+		(void)close(to_fd);
+		return (1);
+	}
+
+	if (pflag && setfile(fs, to_fd))
+		rval = 1;
+	/*
+	 * If the source was setuid or setgid, lose the bits unless the
+	 * copy is owned by the same user and group.
+	 */
+#define	RETAINBITS \
+	(S_ISUID | S_ISGID | S_ISVTX | S_IRWXU | S_IRWXG | S_IRWXO)
+	else if (fs->st_mode & (S_ISUID | S_ISGID) && fs->st_uid == myuid)
+		if (fstat(to_fd, &to_stat)) {
+			warn("%s", to.p_path);
+			rval = 1;
+		} else if (fs->st_gid == to_stat.st_gid &&
+		    fchmod(to_fd, fs->st_mode & RETAINBITS & ~myumask)) {
+			warn("%s", to.p_path);
+			rval = 1;
+		}
+	(void)close(from_fd);
+	if (close(to_fd)) {
+		warn("%s", to.p_path);
+		rval = 1;
+	}
+	return (rval);
+}
+
+int
+copy_link(p, exists)
+	FTSENT *p;
+	int exists;
+{
+	int len;
+	char link[MAXPATHLEN];
+
+	if ((len = readlink(p->fts_path, link, sizeof(link))) == -1) {
+		warn("readlink: %s", p->fts_path);
+		return (1);
+	}
+	link[len] = '\0';
+	if (exists && unlink(to.p_path)) {
+		warn("unlink: %s", to.p_path);
+		return (1);
+	}
+	if (symlink(link, to.p_path)) {
+		warn("symlink: %s", link);
+		return (1);
+	}
+	return (0);
+}
+
+int
+copy_fifo(from_stat, exists)
+	struct stat *from_stat;
+	int exists;
+{
+	if (exists && unlink(to.p_path)) {
+		warn("unlink: %s", to.p_path);
+		return (1);
+	}
+	if (mkfifo(to.p_path, from_stat->st_mode)) {
+		warn("mkfifo: %s", to.p_path);
+		return (1);
+	}
+	return (pflag ? setfile(from_stat, 0) : 0);
+}
+
+int
+copy_special(from_stat, exists)
+	struct stat *from_stat;
+	int exists;
+{
+	if (exists && unlink(to.p_path)) {
+		warn("unlink: %s", to.p_path);
+		return (1);
+	}
+	if (mknod(to.p_path, from_stat->st_mode, from_stat->st_rdev)) {
+		warn("mknod: %s", to.p_path);
+		return (1);
+	}
+	return (pflag ? setfile(from_stat, 0) : 0);
+}
+
+
+int
+setfile(fs, fd)
+	register struct stat *fs;
+	int fd;
+{
+	static struct timeval tv[2];
+	int rval;
+
+	rval = 0;
+	fs->st_mode &= S_ISUID | S_ISGID | S_IRWXU | S_IRWXG | S_IRWXO;
+
+	TIMESPEC_TO_TIMEVAL(&tv[0], &fs->st_atimespec);
+	TIMESPEC_TO_TIMEVAL(&tv[1], &fs->st_mtimespec);
+	if (utimes(to.p_path, tv)) {
+		warn("utimes: %s", to.p_path);
+		rval = 1;
+	}
+	/*
+	 * Changing the ownership probably won't succeed, unless we're root
+	 * or POSIX_CHOWN_RESTRICTED is not set.  Set uid/gid before setting
+	 * the mode; current BSD behavior is to remove all setuid bits on
+	 * chown.  If chown fails, lose setuid/setgid bits.
+	 */
+	if (fd ? fchown(fd, fs->st_uid, fs->st_gid) :
+	    chown(to.p_path, fs->st_uid, fs->st_gid)) {
+		if (errno != EPERM) {
+			warn("chown: %s", to.p_path);
+			rval = 1;
+		}
+		fs->st_mode &= ~(S_ISUID | S_ISGID);
+	}
+	if (fd ? fchmod(fd, fs->st_mode) : chmod(to.p_path, fs->st_mode)) {
+		warn("chown: %s", to.p_path);
+		rval = 1;
+	}
+
+	if (fd ?
+	    fchflags(fd, fs->st_flags) : chflags(to.p_path, fs->st_flags)) {
+		warn("chflags: %s", to.p_path);
+		rval = 1;
+	}
+	return (rval);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "%s\n%s\n",
+"usage: cp [-R [-H | -L | -P] [-fip] src target",
+"       cp [-R [-H | -L | -P] [-fip] src1 ... srcN directory");
+	exit(1);
+}