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author | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
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committer | rgrimes <rgrimes@FreeBSD.org> | 1994-05-27 12:33:43 +0000 |
commit | f9ab90d9d6d02989a075d0f0074496d5b1045e4b (patch) | |
tree | add7e996bac5289cdc55e6935750c352505560a9 /usr.bin/strip | |
parent | be22b15ae2ff8d7fe06b6e14fddf0c5b444a95da (diff) | |
download | FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.zip FreeBSD-src-f9ab90d9d6d02989a075d0f0074496d5b1045e4b.tar.gz |
BSD 4.4 Lite Usr.bin Sources
Diffstat (limited to 'usr.bin/strip')
-rw-r--r-- | usr.bin/strip/Makefile | 11 | ||||
-rw-r--r-- | usr.bin/strip/strip.1 | 69 | ||||
-rw-r--r-- | usr.bin/strip/strip.c | 259 |
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; +} |