summaryrefslogtreecommitdiffstats
path: root/usr.bin/strip/strip.c
diff options
context:
space:
mode:
Diffstat (limited to 'usr.bin/strip/strip.c')
-rw-r--r--usr.bin/strip/strip.c266
1 files changed, 0 insertions, 266 deletions
diff --git a/usr.bin/strip/strip.c b/usr.bin/strip/strip.c
deleted file mode 100644
index 0169aa8..0000000
--- a/usr.bin/strip/strip.c
+++ /dev/null
@@ -1,266 +0,0 @@
-/*
- * 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 const char copyright[] =
-"@(#) Copyright (c) 1988, 1993\n\
- The Regents of the University of California. All rights reserved.\n";
-#endif /* not lint */
-
-#ifndef lint
-#if 0
-static char sccsid[] = "@(#)strip.c 8.1 (Berkeley) 6/6/93";
-#endif
-static const char rcsid[] =
- "$FreeBSD$";
-#endif /* not lint */
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-
-#include <a.out.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-typedef struct exec EXEC;
-typedef struct nlist NLIST;
-
-#define strx n_un.n_strx
-
-void s_stab(const char *, int, EXEC *);
-void s_sym(const char *, int, EXEC *);
-static void usage(void);
-
-int xflag = 0;
-int err_val = 0;
-
-int
-main(argc, argv)
- int argc;
- char *argv[];
-{
- register int fd, nb;
- EXEC head;
- void (*sfcn)(const char *, int, EXEC *);
- int ch;
- char *fn;
-
- sfcn = s_sym;
- while ((ch = getopt(argc, argv, "dx")) != -1)
- switch(ch) {
- case 'x':
- xflag = 1;
- /*FALLTHROUGH*/
- case 'd':
- sfcn = s_stab;
- break;
- case '?':
- default:
- usage();
- }
- argc -= optind;
- argv += optind;
-
- while ((fn = *argv++) != NULL) {
- if ((fd = open(fn, O_RDWR)) < 0 ||
- (nb = read(fd, &head, sizeof(EXEC))) == -1) {
- warn("%s", fn);
- err_val = 1;
- if (fd >= 0 && close(fd)) {
- warn("%s", fn);
- err_val = 1;
- }
- continue;
- }
- if (nb != sizeof(EXEC) || N_BADMAG(head)) {
- warnx("%s: %s", fn, strerror(EFTYPE));
- err_val = 1;
- if (close(fd)) {
- warn("%s", fn);
- err_val = 1;
- }
- continue;
- }
- sfcn(fn, fd, &head);
- if (close(fd)) {
- warn("%s", fn);
- err_val = 1;
- }
- }
- exit(err_val);
-}
-
-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)) {
- warn("%s", fn);
- err_val = 1;
- }
-}
-
-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) {
- warn("%s", fn);
- err_val = 1;
- return;
- }
-
- /* Check size. */
- if (sb.st_size > SIZE_T_MAX) {
- warnx("%s: %s", fn, strerror(EFBIG));
- err_val = 1;
- 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 *)MAP_FAILED) {
- warn("%s", fn);
- err_val = 1;
- 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((size_t)*(u_long *)strbase)) == NULL) {
- warn(NULL);
- err_val = 1;
- munmap((caddr_t)ep, sb.st_size);
- return;
- }
- 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;
- if (xflag &&
- (!(sym->n_type & N_EXT) ||
- (sym->n_type & ~N_EXT) == N_FN ||
- strcmp(p, "gcc_compiled.") == 0 ||
- strcmp(p, "gcc2_compiled.") == 0 ||
- strcmp(p, "___gnu_compiled_c") == 0))
- continue;
- 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)) {
- warn("%s", fn);
- err_val = 1;
- }
- munmap((caddr_t)ep, (size_t)sb.st_size);
-}
-
-static void
-usage()
-{
- (void)fprintf(stderr, "usage: strip [-dx] file ...\n");
- exit(1);
-}
OpenPOWER on IntegriCloud