BSD 4.4 Lite Usr.bin Sources

3 files changed, 339 insertions, 0 deletions

diff --git a/usr.bin/strip/Makefile b/usr.bin/strip/Makefile
new file mode 100644
index 0000000..aedea50
--- /dev/null
+++ b/usr.bin/strip/Makefile
@@ -0,0 +1,11 @@
+#	@(#)Makefile	8.1 (Berkeley) 6/6/93
+
+PROG=	strip
+
+install: maninstall
+	install -c -o ${BINOWN} -g ${BINOWN} -m ${BINMODE} strip \
+	    ${DESTDIR}${BINDIR}
+	./strip ${DESTDIR}${BINDIR}/strip
+	rm -f ./strip
+
+.include <bsd.prog.mk>
diff --git a/usr.bin/strip/strip.1 b/usr.bin/strip/strip.1
new file mode 100644
index 0000000..b131004
--- /dev/null
+++ b/usr.bin/strip/strip.1
@@ -0,0 +1,69 @@
+.\" Copyright (c) 1989, 1990, 1993
+.\"	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.
+.\"
+.\"     @(#)strip.1	8.1 (Berkeley) 6/6/93
+.\"
+.Dd June 6, 1993
+.Dt STRIP 1
+.Os
+.Sh NAME
+.Nm strip
+.Nd remove unnecessary information from executable files
+.Sh SYNOPSIS
+.Nm strip
+.Op Fl d
+.Ar file ...
+.Sh DESCRIPTION
+The
+.Nm strip
+utility
+deletes the relocation information and symbol table used by
+assemblers, loaders and debuggers.
+This significantly
+decreases the size of the installed binaries and saves disk space.
+.Pp
+The options are as follows:
+.Bl -tag -width Ds
+.It Fl d
+Delete only debugging and empty symbols.
+.El
+.Pp
+.Nm Strip
+exits 0 on success and 1 if an error occurred.
+.Sh SEE ALSO
+.Xr cc 1 ,
+.Xr ld 1 ,
+.Xr stab 5
+.Sh HISTORY
+A
+.Nm
+command appeared in
+.At v6 .
diff --git a/usr.bin/strip/strip.c b/usr.bin/strip/strip.c
new file mode 100644
index 0000000..9de05f7
--- /dev/null
+++ b/usr.bin/strip/strip.c
@@ -0,0 +1,259 @@
+/*
+ * Copyright (c) 1988, 1993
+ *	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 copyright[] =
+"@(#) Copyright (c) 1988, 1993\n\
+	The Regents of the University of California.  All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)strip.c	8.1 (Berkeley) 6/6/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/mman.h>
+
+#include <limits.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <a.out.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+typedef struct exec EXEC;
+typedef struct nlist NLIST;
+
+#define	strx	n_un.n_strx
+
+void err __P((int, const char *fmt, ...));
+void s_stab __P((const char *, int, EXEC *));
+void s_sym __P((const char *, int, EXEC *));
+void usage __P((void));
+
+int eval;
+
+int
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	register int fd, nb;
+	EXEC head;
+	void (*sfcn)__P((const char *, int, EXEC *));
+	int ch;
+	char *fn;
+
+	sfcn = s_sym;
+	while ((ch = getopt(argc, argv, "d")) != EOF)
+		switch(ch) {
+		case 'd':
+			sfcn = s_stab;
+			break;
+		case '?':
+		default:
+			usage();
+		}
+	argc -= optind;
+	argv += optind;
+
+	while (fn = *argv++) {
+		if ((fd = open(fn, O_RDWR)) < 0 ||
+		    (nb = read(fd, &head, sizeof(EXEC))) == -1) {
+			err(0, "%s: %s", fn, strerror(errno));
+			continue;
+		}
+		if (nb != sizeof(EXEC) || N_BADMAG(head)) {
+			err(0, "%s: %s", fn, strerror(EFTYPE));
+			continue;
+		}
+		sfcn(fn, fd, &head);
+		if (close(fd))
+			err(0, "%s: %s", fn, strerror(errno));
+	}
+	exit(eval);
+}
+
+void
+s_sym(fn, fd, ep)
+	const char *fn;
+	int fd;
+	register EXEC *ep;
+{
+	register off_t fsize;
+
+	/* If no symbols or data/text relocation info, quit. */
+	if (!ep->a_syms && !ep->a_trsize && !ep->a_drsize)
+		return;
+
+	/*
+	 * New file size is the header plus text and data segments.
+	 */
+	fsize = N_DATOFF(*ep) + ep->a_data;
+
+	/* Set symbol size and relocation info values to 0. */
+	ep->a_syms = ep->a_trsize = ep->a_drsize = 0;
+
+	/* Rewrite the header and truncate the file. */
+	if (lseek(fd, (off_t)0, SEEK_SET) == -1 ||
+	    write(fd, ep, sizeof(EXEC)) != sizeof(EXEC) ||
+	    ftruncate(fd, fsize))
+		err(0, "%s: %s", fn, strerror(errno)); 
+}
+
+void
+s_stab(fn, fd, ep)
+	const char *fn;
+	int fd;
+	EXEC *ep;
+{
+	register int cnt, len;
+	register char *nstr, *nstrbase, *p, *strbase;
+	register NLIST *sym, *nsym;
+	struct stat sb;
+	NLIST *symbase;
+
+	/* Quit if no symbols. */
+	if (ep->a_syms == 0)
+		return;
+
+	/* Stat the file. */
+	if (fstat(fd, &sb) < 0) {
+		err(0, "%s: %s", fn, strerror(errno));
+		return;
+	}
+
+	/* Check size. */
+	if (sb.st_size > SIZE_T_MAX) {
+		err(0, "%s: %s", fn, strerror(EFBIG));
+		return;
+	}
+
+	/* Map the file. */
+	if ((ep = (EXEC *)mmap(NULL, (size_t)sb.st_size,
+	    PROT_READ | PROT_WRITE, MAP_SHARED, fd, (off_t)0)) == (EXEC *)-1) {
+		err(0, "%s: %s", fn, strerror(errno));
+		return;
+	}
+
+	/*
+	 * Initialize old and new symbol pointers.  They both point to the
+	 * beginning of the symbol table in memory, since we're deleting
+	 * entries.
+	 */
+	sym = nsym = symbase = (NLIST *)((char *)ep + N_SYMOFF(*ep));
+
+	/*
+	 * Allocate space for the new string table, initialize old and
+	 * new string pointers.  Handle the extra long at the beginning
+	 * of the string table.
+	 */
+	strbase = (char *)ep + N_STROFF(*ep);
+	if ((nstrbase = malloc((u_int)*(u_long *)strbase)) == NULL)
+		err(1, "%s", strerror(errno));
+	nstr = nstrbase + sizeof(u_long);
+
+	/*
+	 * Read through the symbol table.  For each non-debugging symbol,
+	 * copy it and save its string in the new string table.  Keep
+	 * track of the number of symbols.
+	 */
+	for (cnt = ep->a_syms / sizeof(NLIST); cnt--; ++sym)
+		if (!(sym->n_type & N_STAB) && sym->strx) {
+			*nsym = *sym;
+			nsym->strx = nstr - nstrbase;
+			p = strbase + sym->strx;
+			len = strlen(p) + 1;
+			bcopy(p, nstr, len);
+			nstr += len;
+			++nsym;
+		}
+
+	/* Fill in new symbol table size. */
+	ep->a_syms = (nsym - symbase) * sizeof(NLIST);
+
+	/* Fill in the new size of the string table. */
+	*(u_long *)nstrbase = len = nstr - nstrbase;
+
+	/*
+	 * Copy the new string table into place.  Nsym should be pointing
+	 * at the address past the last symbol entry.
+	 */
+	bcopy(nstrbase, (void *)nsym, len);
+
+	/* Truncate to the current length. */
+	if (ftruncate(fd, (char *)nsym + len - (char *)ep))
+		err(0, "%s: %s", fn, strerror(errno));
+	munmap((caddr_t)ep, (size_t)sb.st_size);
+}
+
+void
+usage()
+{
+	(void)fprintf(stderr, "usage: strip [-d] file ...\n");
+	exit(1);
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if __STDC__
+err(int fatal, const char *fmt, ...)
+#else
+err(fatal, fmt, va_alist)
+	int fatal;
+	char *fmt;
+        va_dcl
+#endif
+{
+	va_list ap;
+#if __STDC__
+	va_start(ap, fmt);
+#else
+	va_start(ap);
+#endif
+	(void)fprintf(stderr, "strip: ");
+	(void)vfprintf(stderr, fmt, ap);
+	va_end(ap);
+	(void)fprintf(stderr, "\n");
+	if (fatal)
+		exit(1);
+	eval = 1;
+}