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Add ELF Tool Chain's ar(1) and elfdump(1) to contrib

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ELF Tool Chain built on FreeBSD's ar and elfdump, but has a number of
improvements and enhancements. Bring them into contrib in order to start
integrating into our build.
This commit is contained in:
Ed Maste 2015-07-30 12:41:54 +00:00
commit 3fe401a500
16 changed files with 6788 additions and 0 deletions
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35
contrib/elftoolchain/ar/Makefile Normal file
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# $Id: Makefile 3107 2014-12-20 08:31:58Z kaiwang27 $
TOP= ..
PROG= ar
SRCS= ar.c read.c util.c write.c
LSRC= acplex.l
YSRC= acpyacc.y
WARNS?= 5
DPADD= ${LIBARCHIVE} ${LIBELFTC} ${LIBELF} ${LIBZ}
LDADD= -larchive -lelftc -lelf -lz
CFLAGS+=-I. -I${.CURDIR}
LINKS= ${BINDIR}/ar ${BINDIR}/ranlib
EXTRA_TARGETS= ranlib
CLEANFILES+= ${EXTRA_TARGETS}
MAN= ar.1 ranlib.1 ar.5
all: ${EXTRA_TARGETS}
${EXTRA_TARGETS}: ${PROG}
ln -s ${PROG} ${.TARGET}
.include "${TOP}/mk/elftoolchain.prog.mk"
.if ${OS_HOST} == "OpenBSD"
CFLAGS+= -I/usr/local/include
LDFLAGS+= -L/usr/local/lib
.endif

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contrib/elftoolchain/ar/acplex.l Normal file
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%{
/*-
* Copyright (c) 2008 Kai Wang
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <err.h>
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include "_elftc.h"
ELFTC_VCSID("$Id: acplex.l 3174 2015-03-27 17:13:41Z emaste $");
#include "acpyacc.h"
#define YY_NO_UNPUT
#if !defined(ELFTC_BROKEN_YY_NO_INPUT)
#define YY_NO_INPUT
#endif
int lineno = 1;
int yylex(void);
%}
%option nounput
%option noyywrap
%%
ADDLIB|addlib { return (ADDLIB); }
ADDMOD|addmod { return (ADDMOD); }
CLEAR|clear { return (CLEAR); }
CREATE|create { return (CREATE); }
DELETE|delete { return (DELETE); }
DIRECTORY|directory { return (DIRECTORY); }
END|end { return (END); }
EXTRACT|extract { return (EXTRACT); }
LIST|list { return (LIST); }
OPEN|open { return (OPEN); }
REPLACE|replace { return (REPLACE); }
VERBOSE|verbose { return (VERBOSE); }
SAVE|save { return (SAVE); }
"(" { return (LP); }
")" { return (RP); }
"," { return (COMMA); }
[-_A-Za-z0-9/:$.\\]+ {
yylval.str = strdup(yytext);
if (yylval.str == NULL)
err(EXIT_FAILURE, "strdup failed");
return (FNAME);
}
[ \t] /* whitespace */
"*".* /* comment */
";".* /* comment */
"+\n" { lineno++; /* '+' is line continuation char */ }
"\n" { lineno++; return (EOL); }

658
contrib/elftoolchain/ar/acpyacc.y Normal file
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%{
/*-
* Copyright (c) 2008 Kai Wang
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/mman.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "libelftc.h"
#include "ar.h"
ELFTC_VCSID("$Id");
#define TEMPLATE "arscp.XXXXXXXX"
struct list {
char *str;
struct list *next;
};
extern int yylex(void);
extern int yyparse(void);
static void yyerror(const char *);
static void arscp_addlib(char *archive, struct list *list);
static void arscp_addmod(struct list *list);
static void arscp_clear(void);
static void arscp_create(char *in, char *out);
static void arscp_delete(struct list *list);
static void arscp_dir(char *archive, struct list *list, char *rlt);
static void arscp_end(int eval);
static void arscp_extract(struct list *list);
static void arscp_free_argv(void);
static void arscp_free_mlist(struct list *list);
static void arscp_list(void);
static struct list *arscp_mlist(struct list *list, char *str);
static void arscp_mlist2argv(struct list *list);
static int arscp_mlist_len(struct list *list);
static void arscp_open(char *fname);
static void arscp_prompt(void);
static void arscp_replace(struct list *list);
static void arscp_save(void);
static int arscp_target_exist(void);
extern int lineno;
static struct bsdar *bsdar;
static char *target;
static char *tmpac;
static int interactive;
static int verbose;
%}
%token ADDLIB
%token ADDMOD
%token CLEAR
%token CREATE
%token DELETE
%token DIRECTORY
%token END
%token EXTRACT
%token LIST
%token OPEN
%token REPLACE
%token VERBOSE
%token SAVE
%token LP
%token RP
%token COMMA
%token EOL
%token <str> FNAME
%type <list> mod_list
%union {
char *str;
struct list *list;
}
%%
begin
: { arscp_prompt(); } ar_script
;
ar_script
: cmd_list
|
;
mod_list
: FNAME { $$ = arscp_mlist(NULL, $1); }
| mod_list separator FNAME { $$ = arscp_mlist($1, $3); }
;
separator
: COMMA
|
;
cmd_list
: rawcmd
| cmd_list rawcmd
;
rawcmd
: cmd EOL { arscp_prompt(); }
;
cmd
: addlib_cmd
| addmod_cmd
| clear_cmd
| create_cmd
| delete_cmd
| directory_cmd
| end_cmd
| extract_cmd
| list_cmd
| open_cmd
| replace_cmd
| verbose_cmd
| save_cmd
| invalid_cmd
| empty_cmd
| error
;
addlib_cmd
: ADDLIB FNAME LP mod_list RP { arscp_addlib($2, $4); }
| ADDLIB FNAME { arscp_addlib($2, NULL); }
;
addmod_cmd
: ADDMOD mod_list { arscp_addmod($2); }
;
clear_cmd
: CLEAR { arscp_clear(); }
;
create_cmd
: CREATE FNAME { arscp_create(NULL, $2); }
;
delete_cmd
: DELETE mod_list { arscp_delete($2); }
;
directory_cmd
: DIRECTORY FNAME { arscp_dir($2, NULL, NULL); }
| DIRECTORY FNAME LP mod_list RP { arscp_dir($2, $4, NULL); }
| DIRECTORY FNAME LP mod_list RP FNAME { arscp_dir($2, $4, $6); }
;
end_cmd
: END { arscp_end(EXIT_SUCCESS); }
;
extract_cmd
: EXTRACT mod_list { arscp_extract($2); }
;
list_cmd
: LIST { arscp_list(); }
;
open_cmd
: OPEN FNAME { arscp_open($2); }
;
replace_cmd
: REPLACE mod_list { arscp_replace($2); }
;
save_cmd
: SAVE { arscp_save(); }
;
verbose_cmd
: VERBOSE { verbose = !verbose; }
;
empty_cmd
:
;
invalid_cmd
: FNAME { yyerror(NULL); }
;
%%
/* ARGSUSED */
static void
yyerror(const char *s)
{
(void) s;
printf("Syntax error in archive script, line %d\n", lineno);
}
/*
* The arscp_open() function will first open an archive and check its
* validity. If the archive format is valid, it will call
* arscp_create() to create a temporary copy of the archive.
*/
static void
arscp_open(char *fname)
{
struct archive *a;
struct archive_entry *entry;
int r;
if ((a = archive_read_new()) == NULL)
bsdar_errc(bsdar, 0, "archive_read_new failed");
archive_read_support_format_ar(a);
AC(archive_read_open_filename(a, fname, DEF_BLKSZ));
if ((r = archive_read_next_header(a, &entry)))
bsdar_warnc(bsdar, 0, "%s", archive_error_string(a));
AC(archive_read_close(a));
ACV(archive_read_free(a));
if (r != ARCHIVE_OK)
return;
arscp_create(fname, fname);
}
/*
* Create an archive.
*
* If the parameter 'in' is NULL (the 'CREATE' command), a new empty
* archive will be created. If the parameter 'in' is not NULL (the
* 'OPEN' command), the resulting archive will be a modified version
* of the existing archive.
*/
static void
arscp_create(char *in, char *out)
{
struct archive *a;
int ifd, ofd;
/* Delete the previously created temporary archive, if any. */
if (tmpac) {
if (unlink(tmpac) < 0)
bsdar_errc(bsdar, errno, "unlink failed");
free(tmpac);
}
tmpac = strdup(TEMPLATE);
if (tmpac == NULL)
bsdar_errc(bsdar, errno, "strdup failed");
if ((ofd = mkstemp(tmpac)) < 0)
bsdar_errc(bsdar, errno, "mkstemp failed");
if (in) {
/*
* The 'OPEN' command creates a temporary copy of the
* input archive.
*/
if ((ifd = open(in, O_RDONLY)) < 0 ||
elftc_copyfile(ifd, ofd) < 0) {
bsdar_warnc(bsdar, errno, "'OPEN' failed");
(void) close(ofd);
if (ifd != -1)
(void) close(ifd);
return;
}
(void) close(ifd);
(void) close(ofd);
} else {
/*
* The 'CREATE' command creates an "empty" archive (an
* archive consisting only of the archive header).
*/
if ((a = archive_write_new()) == NULL)
bsdar_errc(bsdar, 0, "archive_write_new failed");
archive_write_set_format_ar_svr4(a);
AC(archive_write_open_fd(a, ofd));
AC(archive_write_close(a));
ACV(archive_write_free(a));
}
/* Override the previous target, if any. */
if (target)
free(target);
target = out;
bsdar->filename = tmpac;
}
/*
* Add all modules of an archive to the current archive. If the
* parameter 'list' is not NULL, only those modules specified by
* 'list' will be added.
*/
static void
arscp_addlib(char *archive, struct list *list)
{
if (!arscp_target_exist())
return;
arscp_mlist2argv(list);
bsdar->addlib = archive;
ar_write_archive(bsdar, 'A');
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* Add modules to the current archive.
*/
static void
arscp_addmod(struct list *list)
{
if (!arscp_target_exist())
return;
arscp_mlist2argv(list);
ar_write_archive(bsdar, 'q');
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* Delete modules from the current archive.
*/
static void
arscp_delete(struct list *list)
{
if (!arscp_target_exist())
return;
arscp_mlist2argv(list);
ar_write_archive(bsdar, 'd');
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* Extract modules from the current archive.
*/
static void
arscp_extract(struct list *list)
{
if (!arscp_target_exist())
return;
arscp_mlist2argv(list);
ar_read_archive(bsdar, 'x');
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* List the contents of an archive (simple mode).
*/
static void
arscp_list(void)
{
if (!arscp_target_exist())
return;
bsdar->argc = 0;
bsdar->argv = NULL;
/* Always verbose. */
bsdar->options |= AR_V;
ar_read_archive(bsdar, 't');
bsdar->options &= ~AR_V;
}
/*
* List the contents of an archive (advanced mode).
*/
static void
arscp_dir(char *archive, struct list *list, char *rlt)
{
FILE *out;
/* If rlt != NULL, redirect the output to it. */
out = NULL;
if (rlt) {
out = bsdar->output;
if ((bsdar->output = fopen(rlt, "w")) == NULL)
bsdar_errc(bsdar, errno, "fopen %s failed", rlt);
}
bsdar->filename = archive;
if (list)
arscp_mlist2argv(list);
else {
bsdar->argc = 0;
bsdar->argv = NULL;
}
if (verbose)
bsdar->options |= AR_V;
ar_read_archive(bsdar, 't');
bsdar->options &= ~AR_V;
if (rlt) {
if (fclose(bsdar->output) == EOF)
bsdar_errc(bsdar, errno, "fclose %s failed", rlt);
bsdar->output = out;
free(rlt);
}
free(archive);
bsdar->filename = tmpac;
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* Replace modules in the current archive.
*/
static void
arscp_replace(struct list *list)
{
if (!arscp_target_exist())
return;
arscp_mlist2argv(list);
ar_write_archive(bsdar, 'r');
arscp_free_argv();
arscp_free_mlist(list);
}
/*
* Rename the temporary archive to the target archive.
*/
static void
arscp_save(void)
{
mode_t mask;
if (target) {
if (rename(tmpac, target) < 0)
bsdar_errc(bsdar, errno, "rename failed");
/*
* Because mkstemp() creates temporary files with mode
* 0600, we set target archive's mode as per the
* process umask.
*/
mask = umask(0);
umask(mask);
if (chmod(target, 0666 & ~mask) < 0)
bsdar_errc(bsdar, errno, "chmod failed");
free(tmpac);
free(target);
tmpac = NULL;
target= NULL;
bsdar->filename = NULL;
} else
bsdar_warnc(bsdar, 0, "no open output archive");
}
/*
* Discard the contents of the current archive. This is achieved by
* invoking the 'CREATE' cmd on the current archive.
*/
static void
arscp_clear(void)
{
char *new_target;
if (target) {
new_target = strdup(target);
if (new_target == NULL)
bsdar_errc(bsdar, errno, "strdup failed");
arscp_create(NULL, new_target);
}
}
/*
* Quit ar(1). Note that the 'END' cmd will not 'SAVE' the current
* archive before exiting.
*/
static void
arscp_end(int eval)
{
if (target)
free(target);
if (tmpac) {
if (unlink(tmpac) == -1)
bsdar_errc(bsdar, errno, "unlink %s failed", tmpac);
free(tmpac);
}
exit(eval);
}
/*
* Check if a target was specified, i.e, whether an 'OPEN' or 'CREATE'
* had been issued by the user.
*/
static int
arscp_target_exist(void)
{
if (target)
return (1);
bsdar_warnc(bsdar, 0, "no open output archive");
return (0);
}
/*
* Construct the list of modules.
*/
static struct list *
arscp_mlist(struct list *list, char *str)
{
struct list *l;
l = malloc(sizeof(*l));
if (l == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
l->str = str;
l->next = list;
return (l);
}
/*
* Calculate the length of an mlist.
*/
static int
arscp_mlist_len(struct list *list)
{
int len;
for(len = 0; list; list = list->next)
len++;
return (len);
}
/*
* Free the space allocated for a module list.
*/
static void
arscp_free_mlist(struct list *list)
{
struct list *l;
/* Note: list->str was freed in arscp_free_argv(). */
for(; list; list = l) {
l = list->next;
free(list);
}
}
/*
* Convert a module list to an 'argv' array.
*/
static void
arscp_mlist2argv(struct list *list)
{
char **argv;
int i, n;
n = arscp_mlist_len(list);
argv = malloc(n * sizeof(*argv));
if (argv == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
/* Note that module names are stored in reverse order. */
for(i = n - 1; i >= 0; i--, list = list->next) {
if (list == NULL)
bsdar_errc(bsdar, errno, "invalid mlist");
argv[i] = list->str;
}
bsdar->argc = n;
bsdar->argv = argv;
}
/*
* Free the space allocated for an argv array and its elements.
*/
static void
arscp_free_argv(void)
{
int i;
for(i = 0; i < bsdar->argc; i++)
free(bsdar->argv[i]);
free(bsdar->argv);
}
/*
* Show a prompt if we are in interactive mode.
*/
static void
arscp_prompt(void)
{
if (interactive) {
printf("AR >");
fflush(stdout);
}
}
/*
* The main function implementing script mode.
*/
void
ar_mode_script(struct bsdar *ar)
{
bsdar = ar;
interactive = isatty(fileno(stdin));
while(yyparse()) {
if (!interactive)
arscp_end(EXIT_FAILURE);
}
/* Script ends without END */
arscp_end(EXIT_SUCCESS);
}

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.\" Copyright (c) 2007,2009-2012 Joseph Koshy. 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.
.\"
.\" This software is provided by Joseph Koshy ``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 Joseph Koshy 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.
.\"
.\" $Id: ar.1 3195 2015-05-12 17:22:19Z emaste $
.\"
.Dd December 10, 2012
.Os
.Dt AR 1
.Sh NAME
.Nm ar
.Nd manage archives
.Sh SYNOPSIS
.Nm
.Fl d
.Op Fl T
.Op Fl f
.Op Fl j
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl m
.Op Fl T
.Op Fl a Ar position-after
.Op Fl b Ar position-before
.Op Fl f
.Op Fl i Ar position-before
.Op Fl j
.Op Fl s | Fl S
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl p
.Op Fl T
.Op Fl f
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl q
.Op Fl T
.Op Fl c
.Op Fl D
.Op Fl f
.Op Fl F Ar flavor | Fl -flavor Ar flavor
.Op Fl s | Fl S
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl r
.Op Fl T
.Op Fl a Ar position-after
.Op Fl b Ar position-before
.Op Fl c
.Op Fl D
.Op Fl f
.Op Fl F Ar flavor | Fl -flavor Ar flavor
.Op Fl i Ar position-before
.Op Fl j
.Op Fl s | Fl S
.Op Fl u
.Op Fl v
.Op Fl z
.Ar archive
.Ar
.Nm
.Fl s
.Op Fl D
.Op Fl j
.Op Fl z
.Ar archive
.Nm
.Fl t
.Op Fl f
.Op Fl T
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl x
.Op Fl C
.Op Fl T
.Op Fl f
.Op Fl o
.Op Fl u
.Op Fl v
.Ar archive
.Op Ar
.Nm
.Fl M
.Nm
.Fl V
.Sh DESCRIPTION
The
.Nm
utility creates and maintains groups of files combined into an
archive.
Once an archive has been created, new files can be added to it, and
existing files can be extracted, deleted or replaced.
.Pp
Files are named in the archive by their last file name component,
so if a file referenced by a path containing a
.Dq /
is archived, it will be named by the last component of the path.
Similarly when matching paths listed on the command line against
file names stored in the archive, only the last component of the
path will be compared.
.Pp
The normal use of
.Nm
is for the creation and maintenance of libraries suitable for use
with the link editor
.Xr ld 1 ,
although it is not restricted to this purpose.
The
.Nm
utility can create and manage an archive symbol table (see
.Xr ar 5 )
used to speed up link editing operations.
If a symbol table is present in an archive, it will be
kept up-to-date by subsequent operations on the archive.
.Sh OPTIONS
The
.Nm
utility supports the following options:
.Bl -tag -width indent
.It Fl a Ar member-after
When used with option
.Fl m
this option specifies that the archive members specified by
arguments
.Ar
are moved to after the archive member named by argument
.Ar member-after .
When used with option
.Fl r
this option specifies that the files specified by arguments
.Ar
are added after the archive member named by argument
.Ar member-after .
.It Fl b Ar member-before
When used with option
.Fl m
this option specifies that the archive members specified by
arguments
.Ar
are moved to before the archive member named by argument
.Ar member-before .
When used with option
.Fl r
this option specifies that the files specified by arguments
.Ar
are added before the archive member named by argument
.Ar member-before .
.It Fl c
Suppress the informational message printed when a new archive is
created using the
.Fl r
and
.Fl q
options.
.It Fl C
Prevent extracted files from replacing like-named files
in the file system.
.It Fl d
Delete the members named by arguments
.Ar
from the archive specified by argument
.Ar archive .
The archive's symbol table, if present, is updated to reflect
the new contents of the archive.
.It Fl D
When used in combination with the
.Fl r
or
.Fl q
option, insert 0's instead of the real mtime, uid and gid values
and 0644 instead of file mode from the members named by arguments
.Ar .
This ensures that checksums on the resulting archives are reproducible
when member contents are identical.
.It Fl f
Synonymous with option
.Fl T .
.It Fl F Ar flavor | Fl -flavor Ar flavor
Create archives with the specified archive format.
Legal values for argument
.Ar flavor
are:
.Bl -tag -width indent -compact
.It Ar bsd
Create BSD format archives.
.It Ar gnu
An alias for
.Ar svr4 .
.It Ar svr4
Create SVR4 format archives.
.El
If this option is not specified,
.Nm
will create archives using the SVR4 format.
.It Fl i Ar member-before
Synonymous with option
.Fl b .
.It Fl j
This option is accepted for compatibility with the
.Tn FreeBSD
version of the
.Nm
utility, but is ignored.
.It Fl l
This option is accepted for compatibility with GNU
.Xr ar 1 ,
but is ignored.
.It Fl m
Move archive members specified by arguments
.Ar
within the archive.
If a position has been specified by one of the
.Fl a ,
.Fl b
or
.Fl i
options, the members are moved to before or after the specified
position.
If no position has been specified, the specified members are moved
to the end of the archive.
If the archive has a symbol table, it is updated to reflect the
new contents of the archive.
.It Fl M
Read and execute MRI librarian commands from standard input.
The commands understood by the
.Nm
utility are described in the section
.Sx "MRI Librarian Commands" .
.It Fl o
Preserve the original modification times of members when extracting
them.
.It Fl p
Write the contents of the specified archive members named by
arguments
.Ar
to standard output.
If no members were specified, the contents of all the files in the
archive are written in the order they appear in the archive.
.It Fl q
Append the files specified by arguments
.Ar
to the archive specified by argument
.Ar archive
without checking if the files already exist in the archive.
The archive symbol table will be updated as needed.
If the file specified by the argument
.Ar archive
does not already exist, a new archive will be created.
.It Fl r
Replace (add) the files specified by arguments
.Ar
in the archive specified by argument
.Ar archive ,
creating the archive if necessary.
Replacing existing members will not change the order of members within
the archive.
If a file named in arguments
.Ar
does not exist, existing members in the archive that match that
name are not changed.
New files are added to the end of the archive unless one of the
positioning options
.Fl a ,
.Fl b
or
.Fl i
is specified.
The archive symbol table, if it exists, is updated to reflect the
new state of the archive.
.It Fl s
Add an archive symbol table (see
.Xr ar 5 )
to the archive specified by argument
.Ar archive .
Invoking
.Nm
with the
.Fl s
option alone is equivalent to invoking
.Xr ranlib 1 .
.It Fl S
Do not generate an archive symbol table.
.It Fl t
For
.Nm ,
list the files specified by arguments
.Ar
in the order in which they appear in the archive, one per line.
If no files are specified, all files in the archive are listed.
.It Fl T
Use only the first fifteen characters of the archive member name or
command line file name argument when naming archive members.
.It Fl u
Conditionally update the archive or extract members.
When used with the
.Fl r
option, files named by arguments
.Ar
will be replaced in the archive if they are newer than their
archived versions.
When used with the
.Fl x
option, the members specified by arguments
.Ar
will be extracted only if they are newer than the corresponding
files in the file system.
.It Fl v
Provide verbose output.
When used with the
.Fl d ,
.Fl m ,
.Fl q
or
.Fl x
options,
.Nm
gives a file-by-file description of the archive modification being
performed, which consists of three white-space separated fields:
the option letter, a dash
.Dq "-" ,
and the file name.
When used with the
.Fl r
option,
.Nm
displays the description as above, but the initial letter is an
.Dq a
if the file is added to the archive, or an
.Dq r
if the file replaces a file already in the archive.
When used with the
.Fl p
option, the name of the file enclosed in
.Dq <
and
.Dq >
characters is written to standard output preceded by a single newline
character and followed by two newline characters.
The contents of the named file follow the file name.
When used with the
.Fl t
option,
.Nm
displays eight whitespace separated fields:
the file permissions as displayed by
.Xr strmode 3 ,
decimal user and group IDs separated by a slash (
.Dq / Ns ) ,
the file size in bytes, the file modification time in
.Xr strftime 3
format
.Dq "%b %e %H:%M %Y" ,
and the name of the file.
.It Fl V
Print a version identifier and exit.
.It Fl x
Extract archive members specified by arguments
.Ar
into the current directory.
If no members have been specified, extract all members of the archive.
If the file corresponding to an extracted member does not exist it
will be created.
If the file corresponding to an extracted member does exist, its owner
and group will not be changed while its contents will be overwritten
and its permissions will set to that entered in the archive.
The file's access and modification time would be that of the time
of extraction unless the
.Fl o
option was specified.
.It Fl z
This option is accepted for compatibility with the
.Tn FreeBSD
version of the
.Nm
utility, but is ignored.
.El
.Ss "MRI Librarian Commands"
If the
.Fl M
option is specified, the
.Nm
utility will read and execute commands from its standard input.
If standard input is a terminal, the
.Nm
utility will display the prompt
.Dq Li "AR >"
before reading a line, and will continue operation even if errors are
encountered.
If standard input is not a terminal, the
.Nm
utility will not display a prompt and will terminate execution on
encountering an error.
.Pp
Each input line contains a single command.
Words in an input line are separated by whitespace characters.
The first word of the line is the command, the remaining words are
the arguments to the command.
The command word may be specified in either case.
Arguments may be separated by commas or blanks.
.Pp
Empty lines are allowed and are ignored.
Long lines are continued by ending them with the
.Dq Li +
character.
.Pp
The
.Dq Li *
and
.Dq Li "\;"
characters start a comment.
Comments extend till the end of the line.
.Pp
When executing an MRI librarian script the
.Nm
utility works on a temporary copy of an archive.
Changes to the copy are made permanent using the
.Ic save
command.
.Pp
Commands understood by the
.Nm
utility are:
.Bl -tag -width indent
.It Ic addlib Ar archive | Ic addlib Ar archive Pq Ar member Oo Li , Ar member Oc Ns ...
Add the contents of the archive named by argument
.Ar archive
to the current archive.
If specific members are named using the arguments
.Ar member ,
then those members are added to the current archive.
If no members are specified, the entire contents of the archive
are added to the current archive.
.It Ic addmod Ar member Oo Li , Ar member Oc Ns ...
Add the files named by arguments
.Ar member
to the current archive.
.It Ic clear
Discard all the contents of the current archive.
.It Ic create Ar archive
Create a new archive named by the argument
.Ar archive ,
and makes it the current archive.
If the named archive already exists, it will be overwritten
when the
.Ic save
command is issued.
.It Ic delete Ar module Oo Li , Ar member Oc Ns ...
Delete the modules named by the arguments
.Ar member
from the current archive.
.It Ic directory Ar archive Po Ar member Oo Li , Ar member Oc Ns ... Pc Op Ar outputfile
List each named module in the archive.
The format of the output depends on the verbosity setting set using
the
.Ic verbose
command.
Output is sent to standard output, or to the file specified by
argument
.Ar outputfile .
.It Ic end
Exit successfully from the
.Nm
utility.
Any unsaved changes to the current archive will be discarded.
.It Ic extract Ar member Oo Li , Ar member Oc Ns ...
Extract the members named by the arguments
.Ar member
from the current archive.
.It Ic list
Display the contents of the current archive in verbose style.
.It Ic open Ar archive
Open the archive named by argument
.Ar archive
and make it the current archive.
.It Ic replace Ar member Oo Li , Ar member Oc Ns ...
Replace named members in the current archive with the files specified
by arguments
.Ar member .
The files must be present in the current directory and the named
modules must already exist in the current archive.
.It Ic save
Commit all changes to the current archive.
.It Ic verbose
Toggle the verbosity of the
.Ic directory
command.
.El
.Sh EXAMPLES
To create a new archive
.Pa ex.a
containing three files
.Pa ex1.o ,
.Pa ex2.o
and
.Pa ex3.o ,
use:
.Dl "ar -rc ex.a ex1.o ex2.o ex3.o"
.Pp
To add an archive symbol table to an existing archive
.Pa ex.a ,
use:
.Dl "ar -s ex.a"
.Pp
To delete file
.Pa ex1.o
from archive
.Pa ex.a ,
use:
.D1 "ar -d ex.a ex1.o"
.Pp
To verbosely list the contents of archive
.Pa ex.a ,
use:
.D1 "ar -tv ex.a"
.Pp
To create a new archive
.Pa ex.a
containing the files
.Pa ex1.o ,
and
.Pa ex2.o ,
using MRI librarian commands, use the following script:
.Bd -literal -offset indent
create ex.a * specify the output archive
addmod ex1.o ex2.o * add modules
save * save pending changes
end * exit the utility
.Ed
.Sh DIAGNOSTICS
.Ex -std
.Sh SEE ALSO
.Xr ld 1 ,
.Xr ranlib 1 ,
.Xr archive 3 ,
.Xr elf 3 ,
.Xr strftime 3 ,
.Xr strmode 3 ,
.Xr ar 5
.Sh STANDARDS COMPLIANCE
The
.Nm
utility's support for the
.Fl a ,
.Fl b ,
.Fl c ,
.Fl i ,
.Fl m ,
.Fl p ,
.Fl q ,
.Fl r ,
.Fl s ,
.Fl t ,
.Fl u ,
.Fl v ,
.Fl C
and
.Fl T
options is believed to be compliant with
.St -p1003.2 .
.Sh HISTORY
An
.Nm
command first appeared in AT&T UNIX Version 1.
In
.Fx 8.0 ,
.An Kai Wang Aq Mt kaiw@FreeBSD.org
reimplemented
.Nm
using the
.Lb libarchive
and the
.Lb libelf .

327
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@ -0,0 +1,327 @@
.\" Copyright (c) 2010 Joseph Koshy. 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $Id: ar.5 3182 2015-04-10 16:08:10Z emaste $
.\"
.Dd November 28, 2010
.Os
.Dt AR 5
.Sh NAME
.Nm ar
.Nd archive file format for
.Xr ar 1
and
.Xr ranlib 1
.Sh SYNOPSIS
.In ar.h
.Sh DESCRIPTION
.Xr ar 1
archives are created and managed by the
.Xr ar 1
and
.Xr ranlib 1
utilities.
These archives are typically used during program development to
hold libraries of program objects.
An
.Xr ar 1
archive is contained in a single operating system file.
.Pp
This manual page documents two variants of the
.Xr ar 1
archive format: the BSD archive format, and the SVR4/GNU archive
format.
.Pp
In both variants the archive file starts with an identifying byte
sequence of the seven ASCII characters
.Sq Li "!<arch>"
followed by a ASCII linefeed character
.Po
see the constant
.Dq ARMAG
in the header file
.In ar.h
.Pc .
.Pp
Archive members follow the initial identifying byte sequence.
Each archive member is prefixed by a fixed size header describing the
file attributes associated with the member.
.Ss "Archive Headers"
An archive header describes the file attributes for the archive member that
follows it.
The
.Xr ar 5
format only supports a limited number of attributes: the file name,
the file creation time stamp, the uid and gid of the creator, the file
mode and the file size.
.Pp
Archive headers are placed at an even byte offset in the archive file.
If the data for an archive member ends at an odd byte offset, then a
padding byte with value 0x0A is used to position the next archive
header on an even byte offset.
.Pp
An archive header comprises the following fixed sized fields:
.Bl -tag -width "Li ar_name"
.It Ar ar_name
(16 bytes) The file name of the archive member.
The format of this field varies between the BSD and SVR4/GNU formats and
is described in more detail in the section
.Sx "Representing File Names"
below.
.It Ar ar_date
(12 bytes) The file modification time for the member in seconds since the
epoch, encoded as a decimal number.
.It Ar ar_uid
(6 bytes) The uid associated with the archive member, encoded as a
decimal number.
.It Ar ar_gid
(6 bytes) The gid associated with the archive member, encoded as a
decimal number.
.It Ar ar_mode
(8 bytes) The file mode for the archive member, encoded as an octal
number.
.It Ar ar_size
(10 bytes) In the SVR4/GNU archive format this field holds the size in
bytes of the archive member, encoded as a decimal number.
In the BSD archive format, for short file names, this field
holds the size in bytes of the archive member, encoded as a decimal
number.
For long file names
.Po
see
.Sx "Representing File Names"
below
.Pc ,
the field contains the combined size of the
archive member and its file name, encoded as a decimal number.
.It Ar ar_fmag
(2 bytes) This field holds 2 bytes with values 0x96 and 0x0A
respectively, marking the end of the header.
.El
.Pp
Unused bytes in the fields of an archive header are set to the value
0x20.
.Ss "Representing File Names"
The BSD and SVR4/GNU variants use different schemes for encoding file
names for members.
.Bl -tag -width "SVR4/GNU"
.It "BSD"
File names that are up to 16 bytes long and which do not contain
embedded spaces are stored directly in the
.Ar ar_name
field of the archive header.
File names that are either longer than 16 bytes or which contain
embedded spaces are stored immediately after the archive header
and the
.Ar ar_name
field of the archive header is set to the string
.Dq "#1/"
followed by a decimal representation of the number of bytes needed for
the file name.
In addition, the
.Ar ar_size
field of the archive header is set to the decimal representation of
the combined sizes of the archive member and the file name.
The file contents of the member follows the file name without further
padding.
.Pp
As an example, if the file name for a member was
.Dq "A B"
and its contents was the string
.Dq "C D" ,
then the
.Ar ar_name
field of the header would contain
.Dq Li "#1/3" ,
the
.Ar ar_size
field of the header would contain
.Dq Li 6 ,
and the bytes immediately following the header would be 0x41, 0x20,
0x42, 0x43, 0x20 and 0x44
.Po
ASCII
.Dq "A BC D"
.Pc .
.It "SVR4/GNU"
File names that are up to 15 characters long are stored directly in the
.Ar ar_name
field of the header, terminated by a
.Dq Li /
character.
.Pp
If the file name is larger than would fit in space for the
.Ar ar_name
field, then the actual file name is kept in the archive
string table
.Po
see
.Sx "Archive String Tables"
below
.Pc ,
and the decimal offset of the file name in the string table is stored
in the
.Ar ar_name
field, prefixed by a
.Dq Li /
character.
.Pp
As an example, if the real file name has been stored at offset 768 in
the archive string table, the
.Ar ar_name
field of the header will contain the string
.Dq /768 .
.El
.Ss "Special Archive Members"
The following archive members are special.
.Bl -tag -width indent
.It Dq Li /
In the SVR4/GNU variant of the archive format, the archive member with
name
.Dq Li /
denotes an archive symbol table.
If present, this member will be the very first member in the
archive.
.It Dq Li //
In the SVR4/GNU variant of the archive format, the archive member with
name
.Dq Li //
denotes the archive string table.
This special member is used to hold filenames that do not fit in the
file name field of the header
.Po
see
.Sx "Representing File Names"
above
.Pc .
If present, this member immediately follows the archive symbol table
if an archive symbol table is present, or is the first member otherwise.
.It Dq Li "__.SYMDEF"
This special member contains the archive symbol table in the BSD
variant of the archive format.
If present, this member will be the very first member in the
archive.
.El
.Ss "Archive String Tables"
An archive string table is used in the SVR4/GNU archive format to hold
file names that are too large to fit into the constraints of the
.Ar ar_name
field of the archive header.
An archive string table contains a sequence of file names.
Each file name in the archive string table is terminated by the
byte sequence 0x2F, 0x0A
.Po
the ASCII string
.Dq "/\en"
.Pc .
No padding is used to separate adjacent file names.
.Ss "Archive Symbol Tables"
Archive symbol tables are used to speed up link editing by providing a
mapping between the program symbols defined in the archive
and the corresponding archive members.
Archive symbol tables are managed by the
.Xr ranlib 1
utility.
.Pp
The format of archive symbol tables is as follows:
.Bl -tag -width "SVR4/GNU"
.It BSD
In the BSD archive format, the archive symbol table comprises
of two parts: a part containing an array of
.Vt "struct ranlib"
descriptors, followed by a part containing a symbol string table.
The sizes and layout of the structures that make up a BSD format
archive symbol table are machine dependent.
.Pp
The part containing
.Vt "struct ranlib"
descriptors begins with a field containing the size in bytes of the
array of
.Vt "struct ranlib"
descriptors encoded as a C
.Vt long
value.
.Pp
The array of
.Vt "struct ranlib"
descriptors follows the size field.
Each
.Vt "struct ranlib"
descriptor describes one symbol.
.Pp
A
.Vt "struct ranlib"
descriptor comprises two fields:
.Bl -tag -width "Ar ran_strx" -compact
.It Ar ran_strx
.Pq C Vt long
This field contains the zero-based offset of the symbol name in the
symbol string table.
.It Ar ran_off
.Pq C Vt long
This field is the file offset to the archive header for the archive
member defining the symbol.
.El
.Pp
The part containing the symbol string table begins with a field
containing the size in bytes of the string table, encoded as a C
.Vt long
value.
This string table follows the size field, and contains
NUL-terminated strings for the symbols in the symbol table.
.It SVR4/GNU
In the SVR4/GNU archive format, the archive symbol table starts with a
4-byte binary value containing the number of entries contained in the
archive symbol table.
This count of entries is stored most significant byte first.
.Pp
Next, there are
.Ar count
4-byte numbers, each stored most significant byte first.
Each number is a binary offset to the archive header for the member in
the archive file for the corresponding symbol table entry.
.Pp
After the binary offset values, there are
.Ar count
NUL-terminated strings in sequence, holding the symbol names for
the corresponding symbol table entries.
.El
.Sh STANDARDS COMPLIANCE
The
.Xr ar 1
archive format is not currently specified by a standard.
.Pp
This manual page documents the
.Xr ar 1
archive formats used by the
.Bx 4.4
and
.Ux SVR4
operating system releases.
.Sh SEE ALSO
.Xr ar 1 ,
.Xr ld 1 ,
.Xr ranlib 1 ,
.Xr elf 3 ,
.Xr elf_getarsym 3 ,
.Xr elf_rand 3

433
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/*-
* Copyright (c) 2007 Kai Wang
* Copyright (c) 2007 Tim Kientzle
* Copyright (c) 2007 Joseph Koshy
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
*/
/*-
* Copyright (c) 1990, 1993, 1994
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Hugh Smith at The University of Guelph.
*
* 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. 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 <sys/queue.h>
#include <sys/types.h>
#include <archive.h>
#include <errno.h>
#include <getopt.h>
#include <libelftc.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include "ar.h"
ELFTC_VCSID("$Id: ar.c 3183 2015-04-10 16:18:42Z emaste $");
enum options
{
OPTION_HELP
};
static struct option longopts[] =
{
{"flavor", required_argument, NULL, 'F'},
{"help", no_argument, NULL, OPTION_HELP},
{"version", no_argument, NULL, 'V'},
{NULL, 0, NULL, 0}
};
static void bsdar_usage(void);
static void ranlib_usage(void);
static void set_mode(struct bsdar *bsdar, char opt);
static void only_mode(struct bsdar *bsdar, const char *opt,
const char *valid_modes);
static void bsdar_version(void);
int
main(int argc, char **argv)
{
struct bsdar *bsdar, bsdar_storage;
char *arcmd, *argv1_saved;
size_t len;
int i, opt;
bsdar = &bsdar_storage;
memset(bsdar, 0, sizeof(*bsdar));
arcmd = argv1_saved = NULL;
bsdar->output = stdout;
if ((bsdar->progname = ELFTC_GETPROGNAME()) == NULL)
bsdar->progname = "ar";
if (elf_version(EV_CURRENT) == EV_NONE)
bsdar_errc(bsdar, 0, "ELF library initialization failed: %s",
elf_errmsg(-1));
/*
* Act like ranlib if our name ends in "ranlib"; this
* accommodates names like "arm-freebsd7.1-ranlib",
* "bsdranlib", etc.
*/
len = strlen(bsdar->progname);
if (len >= strlen("ranlib") &&
strcmp(bsdar->progname + len - strlen("ranlib"), "ranlib") == 0) {
while ((opt = getopt_long(argc, argv, "tDV", longopts,
NULL)) != -1) {
switch(opt) {
case 't':
/* Ignored. */
break;
case 'D':
bsdar->options |= AR_D;
break;
case 'V':
bsdar_version();
break;
case OPTION_HELP:
ranlib_usage();
default:
ranlib_usage();
}
}
argv += optind;
argc -= optind;
if (*argv == NULL)
ranlib_usage();
bsdar->options |= AR_S;
for (;(bsdar->filename = *argv++) != NULL;)
ar_write_archive(bsdar, 's');
exit(EXIT_SUCCESS);
} else {
if (argc < 2)
bsdar_usage();
/*
* Tack on a leading '-', for old-style usage.
*/
if (*argv[1] != '-') {
argv1_saved = argv[1];
len = strlen(argv[1]) + 2;
if ((arcmd = malloc(len)) == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
(void) snprintf(arcmd, len, "-%s", argv[1]);
argv[1] = arcmd;
}
}
while ((opt = getopt_long(argc, argv, "abCcdDfF:ijlMmopqrSsTtuVvxz",
longopts, NULL)) != -1) {
switch(opt) {
case 'a':
bsdar->options |= AR_A;
break;
case 'b':
case 'i':
bsdar->options |= AR_B;
break;
case 'C':
bsdar->options |= AR_CC;
break;
case 'c':
bsdar->options |= AR_C;
break;
case 'd':
set_mode(bsdar, opt);
break;
case 'D':
bsdar->options |= AR_D;
break;
case 'F':
if (!strcasecmp(optarg, "svr4") ||
!strcasecmp(optarg, "gnu"))
bsdar->options &= ~AR_BSD;
else if (!strcasecmp(optarg, "bsd"))
bsdar->options |= AR_BSD;
else
bsdar_usage();
break;
case 'f':
case 'T':
bsdar->options |= AR_TR;
break;
case 'j':
/* ignored */
break;
case 'l':
/* ignored, for GNU ar comptibility */
break;
case 'M':
set_mode(bsdar, opt);
break;
case 'm':
set_mode(bsdar, opt);
break;
case 'o':
bsdar->options |= AR_O;
break;
case 'p':
set_mode(bsdar, opt);
break;
case 'q':
set_mode(bsdar, opt);
break;
case 'r':
set_mode(bsdar, opt);
break;
case 'S':
bsdar->options |= AR_SS;
break;
case 's':
bsdar->options |= AR_S;
break;
case 't':
set_mode(bsdar, opt);
break;
case 'u':
bsdar->options |= AR_U;
break;
case 'V':
bsdar_version();
break;
case 'v':
bsdar->options |= AR_V;
break;
case 'x':
set_mode(bsdar, opt);
break;
case 'z':
/* ignored */
break;
case OPTION_HELP:
bsdar_usage();
default:
bsdar_usage();
}
}
/* Restore argv[1] if we had modified it. */
if (arcmd != NULL) {
argv[1] = argv1_saved;
free(arcmd);
arcmd = argv1_saved = NULL;
}
argv += optind;
argc -= optind;
if (*argv == NULL && bsdar->mode != 'M')
bsdar_usage();
if (bsdar->options & AR_A && bsdar->options & AR_B)
bsdar_errc(bsdar, 0,
"only one of -a and -[bi] options allowed");
if (bsdar->options & AR_J && bsdar->options & AR_Z)
bsdar_errc(bsdar, 0,
"only one of -j and -z options allowed");
if (bsdar->options & AR_S && bsdar->options & AR_SS)
bsdar_errc(bsdar, 0,
"only one of -s and -S options allowed");
if (bsdar->options & (AR_A | AR_B)) {
if (*argv == NULL)
bsdar_errc(bsdar, 0,
"no position operand specified");
if ((bsdar->posarg = basename(*argv)) == NULL)
bsdar_errc(bsdar, errno,
"basename failed");
argc--;
argv++;
}
if (bsdar->options & AR_A)
only_mode(bsdar, "-a", "mqr");
if (bsdar->options & AR_B)
only_mode(bsdar, "-b", "mqr");
if (bsdar->options & AR_C)
only_mode(bsdar, "-c", "qr");
if (bsdar->options & AR_CC)
only_mode(bsdar, "-C", "x");
if (bsdar->options & AR_D)
only_mode(bsdar, "-D", "qr");
if (bsdar->options & AR_O)
only_mode(bsdar, "-o", "x");
if (bsdar->options & AR_SS)
only_mode(bsdar, "-S", "mqr");
if (bsdar->options & AR_U)
only_mode(bsdar, "-u", "qrx");
if (bsdar->mode == 'M') {
ar_mode_script(bsdar);
exit(EXIT_SUCCESS);
}
if ((bsdar->filename = *argv) == NULL)
bsdar_usage();
bsdar->argc = --argc;
bsdar->argv = ++argv;
if ((!bsdar->mode || strchr("ptx", bsdar->mode)) &&
bsdar->options & AR_S) {
ar_write_archive(bsdar, 's');
if (!bsdar->mode)
exit(EXIT_SUCCESS);
}
switch(bsdar->mode) {
case 'd': case 'm': case 'q': case 'r':
ar_write_archive(bsdar, bsdar->mode);
break;
case 'p': case 't': case 'x':
ar_read_archive(bsdar, bsdar->mode);
break;
default:
bsdar_usage();
/* NOTREACHED */
}
for (i = 0; i < bsdar->argc; i++)
if (bsdar->argv[i] != NULL)
bsdar_warnc(bsdar, 0, "%s: not found in archive",
bsdar->argv[i]);
exit(EXIT_SUCCESS);
}
static void
set_mode(struct bsdar *bsdar, char opt)
{
if (bsdar->mode != '\0' && bsdar->mode != opt)
bsdar_errc(bsdar, 0, "Can't specify both -%c and -%c",
opt, bsdar->mode);
bsdar->mode = opt;
}
static void
only_mode(struct bsdar *bsdar, const char *opt, const char *valid_modes)
{
if (strchr(valid_modes, bsdar->mode) == NULL)
bsdar_errc(bsdar, 0, "Option %s is not permitted in mode -%c",
opt, bsdar->mode);
}
#define AR_USAGE_MESSAGE "\
Usage: %s <command> [options] archive file...\n\
Manage archives.\n\n\
Where <command> is one of:\n\
-d Delete members from the archive.\n\
-m Move archive members within the archive.\n\
-p Write the contents of members to standard output.\n\
-q Append files to an archive.\n\
-r Replace (add) files to an archive.\n\
-s Add an archive symbol to an archive.\n\
-t List files in an archive.\n\
-x Extract members from an archive.\n\
-M Execute MRI librarian commands.\n\
-V Print a version identifier and exit.\n\n\
Options:\n\
-a MEMBER Add members after the specified member.\n\
-b MEMBER | -i MEMBER\n\
Add members before the specified member.\n\
-c Do not print a message when creating a new archive.\n\
-f | -T Only use the first fifteen characters of the member name.\n\
-j (This option is accepted, but is ignored).\n\
-l (This option is accepted, but is ignored).\n\
-o Preserve modification times when extracting members.\n\
-u Conditionally update or extract members.\n\
-v Be verbose.\n\
-z (This option is accepted, but is ignored).\n\
-C Do not overwrite existing files in the file system.\n\
-D Use fixed metadata, for consistent archive checksums.\n\
-F FORMAT | --flavor=FORMAT\n\
Create archives with the specified format.\n\
-S Do not generate an archive symbol table.\n"
static void
bsdar_usage(void)
{
(void) fprintf(stderr, AR_USAGE_MESSAGE, ELFTC_GETPROGNAME());
exit(EXIT_FAILURE);
}
#define RANLIB_USAGE_MESSAGE "\
Usage: %s [options] archive...\n\
Update or create archive symbol tables.\n\n\
Options:\n\
-t (This option is accepted, but ignored).\n\
-D Use fixed metadata, for consistent archive checksums.\n\
-V Print a version identifier and exit.\n"
static void
ranlib_usage(void)
{
(void)fprintf(stderr, RANLIB_USAGE_MESSAGE, ELFTC_GETPROGNAME());
exit(EXIT_FAILURE);
}
static void
bsdar_version(void)
{
(void)printf("%s (%s, %s)\n", ELFTC_GETPROGNAME(), archive_version_string(),
elftc_version());
exit(EXIT_SUCCESS);
}

143
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/*-
* Copyright (c) 2007 Kai Wang
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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.
*
* $Id: ar.h 2496 2012-04-24 02:33:40Z jkoshy $
*/
#include <libelf.h>
#include "_elftc.h"
/*
* ar(1) options.
*/
#define AR_A 0x0001 /* position-after */
#define AR_B 0x0002 /* position-before */
#define AR_C 0x0004 /* creating new archive */
#define AR_CC 0x0008 /* do not overwrite when extracting */
#define AR_J 0x0010 /* bzip2 compression */
#define AR_O 0x0020 /* preserve original mtime when extracting */
#define AR_S 0x0040 /* write archive symbol table */
#define AR_SS 0x0080 /* do not write archive symbol table */
#define AR_TR 0x0100 /* only keep first 15 chars for member name */
#define AR_U 0x0200 /* only extract or update newer members.*/
#define AR_V 0x0400 /* verbose mode */
#define AR_Z 0x0800 /* gzip compression */
#define AR_D 0x1000 /* insert dummy mode, mtime, uid and gid */
#define AR_BSD 0x2000 /* use the BSD archive format */
#define DEF_BLKSZ 10240 /* default block size */
/* Special names. */
#define AR_STRINGTAB_NAME_SVR4 "//"
#define AR_SYMTAB_NAME_BSD "__.SYMDEF"
#define AR_SYMTAB_NAME_SVR4 "/"
/*
* Convenient wrapper for general libarchive error handling.
*/
#define AC(CALL) do { \
if ((CALL)) \
bsdar_errc(bsdar, 0, "%s", \
archive_error_string(a)); \
} while (0)
/*
* The 'ACV' wrapper is used for libarchive APIs that changed from
* returning 'void' to returning an 'int' in later versions of libarchive.
*/
#if ARCHIVE_VERSION_NUMBER >= 2000000
#define ACV(CALL) AC(CALL)
#else
#define ACV(CALL) do { \
(CALL); \
} while (0)
#endif
/*
* In-memory representation of archive member(object).
*/
struct ar_obj {
Elf *elf; /* object file descriptor */
char *name; /* member name */
uid_t uid; /* user id */
gid_t gid; /* group id */
mode_t md; /* octal file permissions */
size_t size; /* member size */
time_t mtime; /* modification time */
dev_t dev; /* inode's device */
ino_t ino; /* inode's number */
TAILQ_ENTRY(ar_obj) objs;
};
/*
* Structure encapsulates the "global" data for "ar" program.
*/
struct bsdar {
const char *filename; /* archive name. */
const char *addlib; /* target of ADDLIB. */
const char *posarg; /* position arg for modifiers -a, -b. */
char mode; /* program mode */
int options; /* command line options */
FILE *output; /* default output stream */
const char *progname; /* program name */
int argc;
char **argv;
dev_t ar_dev; /* archive device. */
ino_t ar_ino; /* archive inode. */
/*
* Fields for the archive string table.
*/
char *as; /* buffer for archive string table. */
size_t as_sz; /* current size of as table. */
size_t as_cap; /* capacity of as table buffer. */
/*
* Fields for the archive symbol table.
*/
uint32_t s_cnt; /* current number of symbols. */
uint32_t *s_so; /* symbol offset table. */
size_t s_so_cap; /* capacity of so table buffer. */
char *s_sn; /* symbol name table */
size_t s_sn_cap; /* capacity of sn table buffer. */
size_t s_sn_sz; /* current size of sn table. */
/* Current member's offset (relative to the end of pseudo members.) */
off_t rela_off;
TAILQ_HEAD(, ar_obj) v_obj; /* object(member) list */
};
void ar_mode_script(struct bsdar *ar);
void ar_read_archive(struct bsdar *_ar, int _mode);
void ar_write_archive(struct bsdar *_ar, int _mode);
void bsdar_errc(struct bsdar *, int _code, const char *fmt, ...);
int bsdar_is_pseudomember(struct bsdar *_ar, const char *_name);
const char *bsdar_strmode(mode_t m);
void bsdar_warnc(struct bsdar *, int _code, const char *fmt, ...);

65
contrib/elftoolchain/ar/benchmark/acp.sh Executable file
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#!/bin/sh
# $Id: acp.sh 2086 2011-10-27 05:18:01Z jkoshy $
# This script is adapted from Jan Psota's Tar Comparison Program(TCP).
n=3 # number of repetitions
AR="bsdar gnuar" # ar archivers to compare
test $# -ge 2 || {
echo "usage: $0 source_dir where_to_place_archive [where_to_extract_it]"
exit 0
}
THISDIR=`/bin/pwd`
src=$1
dst=$2/acp.a
ext=${3:-$2}/acptmp
test -e $dst -o -e /tmp/acp \
&& { echo "$dst or /tmp/acp exists, exiting"; exit 1; }
mkdir -p $ext || exit 1
show_result ()
{
awk -vL="`du -k $dst`" '{printf "%s\t%s\t%s\%10.1d KB/s\n",
$1, $3, $5, ($1>0?L/$1:0)}' /tmp/acp | sort | head -n 1
}
test -d $src || { echo "'$src' is not a directory"; exit 1; }
# ar versions
for ar in $AR; do echo -n "$ar: "; $ar -V | head -n 1;
done
echo
echo "best time of $n repetitions"
echo -n " src=$src, "
echo -n "`du -sh $src | awk '{print $1}'`"
echo -n " in "
echo "`find $src | wc -l` files"
echo " archive=$dst, extract to $ext"
echo "program operation real user system speed"
for op in "cru $dst $src/*" "t $dst" "x `basename $dst`"; do
for ar in $AR; do
echo -n "$ar "
echo $op | grep -q ^cr && echo -n "create "
echo $op | grep -q ^t && echo -n "list "
echo $op | grep -q ^x && echo -n "extract "
num=0
while [ $num -lt $n ]; do
echo $op | grep -q ^cr && rm -f $dst
echo $op | grep -q ^x && { rm -rf $ext; mkdir -p $ext
cp $dst $ext; cd $ext; }
sync
time $ar $op > /dev/null 2>> /tmp/acp
echo $op | grep -q ^x && cd $THISDIR
num=`expr $num + 1`
done
show_result
rm -rf /tmp/acp
done
echo
done
rm -rf $ext $dst
rm -f /tmp/acp

9
contrib/elftoolchain/ar/os.Linux.mk Normal file
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.if ${OS_DISTRIBUTION} == "Ubuntu"
.if ${OS_DISTRIBUTION_VERSION} >= 14
# Ubuntu Trusty Tahr and later.
# Use the --nounput option to flex(1), to prevent unused functions from
# being generated.
LFLAGS += --nounput
.endif
.endif

86
contrib/elftoolchain/ar/ranlib.1 Normal file
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.\" Copyright (c) 2007,2009-2012 Joseph Koshy. 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.
.\"
.\" This software is provided by Joseph Koshy ``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 Joseph Koshy 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.
.\"
.\" $Id: ranlib.1 3195 2015-05-12 17:22:19Z emaste $
.\"
.Dd December 9, 2012
.Os
.Dt RANLIB 1
.Sh NAME
.Nm ranlib
.Nd update archive symbol tables
.Sh SYNOPSIS
.Nm
.Op Fl D
.Op Fl t
.Ar archive Ns ...
.Nm
.Fl V
.Sh DESCRIPTION
The
.Nm ranlib
utility is used to update an existing archive symbol table in an
.Xr ar 1
archive, or to add an archive symbol table to an archive lacking one.
.Sh OPTIONS
The
.Nm
utility supports the following options:
.Bl -tag -width indent
.It Fl D
Use zeros for the mtime, uid and gid fields, and use mode 0644 for the
file mode field for all archive member headers.
This ensures that checksums on the resulting archives are reproducible
when member contents are identical.
.It Fl t
This option is accepted, but is ignored.
.It Fl V
Print a version identifier and exit.
.El
.Sh EXAMPLES
To update the archive symbol table for an archive
.Pa lib.a ,
use:
.Dl "ranlib lib.a"
.Sh DIAGNOSTICS
.Ex -std
.Sh SEE ALSO
.Xr ar 1 ,
.Xr ld 1 ,
.Xr archive 3 ,
.Xr elf 3 ,
.Xr ar 5
.Sh HISTORY
The
.Nm
command first appeared in AT&T UNIX Version 7.
.Pp
In
.Fx 8.0 ,
.An Kai Wang Aq Mt kaiw@FreeBSD.org
reimplemented
.Nm
using the
.Lb libarchive
and the
.Lb libelf .

199
contrib/elftoolchain/ar/read.c Normal file
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/*-
* Copyright (c) 2007 Kai Wang
* Copyright (c) 2007 Tim Kientzle
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <assert.h>
#include <errno.h>
#include <libgen.h>
#include <stdio.h>
#include <string.h>
#include "ar.h"
ELFTC_VCSID("$Id: read.c 3180 2015-04-09 15:13:57Z emaste $");
/*
* Handle read modes: 'x', 't' and 'p'.
*/
void
ar_read_archive(struct bsdar *bsdar, int mode)
{
FILE *out;
struct archive *a;
struct archive_entry *entry;
struct stat sb;
struct tm *tp;
const char *bname;
const char *name;
mode_t md;
size_t size;
time_t mtime;
uid_t uid;
gid_t gid;
char **av;
char buf[25];
char find;
int i, flags, r;
assert(mode == 'p' || mode == 't' || mode == 'x');
if ((a = archive_read_new()) == NULL)
bsdar_errc(bsdar, 0, "archive_read_new failed");
archive_read_support_format_ar(a);
AC(archive_read_open_filename(a, bsdar->filename, DEF_BLKSZ));
out = bsdar->output;
for (;;) {
r = archive_read_next_header(a, &entry);
if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
r == ARCHIVE_FATAL)
bsdar_warnc(bsdar, 0, "%s", archive_error_string(a));
if (r == ARCHIVE_EOF || r == ARCHIVE_FATAL)
break;
if (r == ARCHIVE_RETRY) {
bsdar_warnc(bsdar, 0, "Retrying...");
continue;
}
if (archive_format(a) == ARCHIVE_FORMAT_AR_BSD)
bsdar->options |= AR_BSD;
else
bsdar->options &= ~AR_BSD;
if ((name = archive_entry_pathname(entry)) == NULL)
break;
/* Skip pseudo members. */
if (bsdar_is_pseudomember(bsdar, name))
continue;
if (bsdar->argc > 0) {
find = 0;
for(i = 0; i < bsdar->argc; i++) {
av = &bsdar->argv[i];
if (*av == NULL)
continue;
if ((bname = basename(*av)) == NULL)
bsdar_errc(bsdar, errno,
"basename failed");
if (strcmp(bname, name) != 0)
continue;
*av = NULL;
find = 1;
break;
}
if (!find)
continue;
}
if (mode == 't') {
if (bsdar->options & AR_V) {
md = archive_entry_mode(entry);
uid = archive_entry_uid(entry);
gid = archive_entry_gid(entry);
size = archive_entry_size(entry);
mtime = archive_entry_mtime(entry);
(void)fprintf(out, "%s %6d/%-6d %8ju ",
bsdar_strmode(md) + 1, uid, gid,
(uintmax_t)size);
tp = localtime(&mtime);
(void)strftime(buf, sizeof(buf),
"%b %e %H:%M %Y", tp);
(void)fprintf(out, "%s %s", buf, name);
} else
(void)fprintf(out, "%s", name);
r = archive_read_data_skip(a);
if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
r == ARCHIVE_FATAL) {
(void)fprintf(out, "\n");
bsdar_warnc(bsdar, 0, "%s",
archive_error_string(a));
}
if (r == ARCHIVE_FATAL)
break;
(void)fprintf(out, "\n");
} else {
/* mode == 'x' || mode = 'p' */
if (mode == 'p') {
if (bsdar->options & AR_V) {
(void)fprintf(out, "\n<%s>\n\n",
name);
fflush(out);
}
r = archive_read_data_into_fd(a, fileno(out));
} else {
/* mode == 'x' */
if (stat(name, &sb) != 0) {
if (errno != ENOENT) {
bsdar_warnc(bsdar, 0,
"stat %s failed",
bsdar->filename);
continue;
}
} else {
/* stat success, file exist */
if (bsdar->options & AR_CC)
continue;
if (bsdar->options & AR_U &&
archive_entry_mtime(entry) <=
sb.st_mtime)
continue;
}
if (bsdar->options & AR_V)
(void)fprintf(out, "x - %s\n", name);
/* Disallow absolute paths. */
if (name[0] == '/') {
bsdar_warnc(bsdar, 0,
"Absolute path '%s'", name);
continue;
}
/* Basic path security flags. */
flags = ARCHIVE_EXTRACT_SECURE_SYMLINKS |
ARCHIVE_EXTRACT_SECURE_NODOTDOT;
if (bsdar->options & AR_O)
flags |= ARCHIVE_EXTRACT_TIME;
r = archive_read_extract(a, entry, flags);
}
if (r)
bsdar_warnc(bsdar, 0, "%s",
archive_error_string(a));
}
}
AC(archive_read_close(a));
ACV(archive_read_free(a));
}

184
contrib/elftoolchain/ar/util.c Normal file
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/*-
* Copyright (c) 2003-2007 Tim Kientzle
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/queue.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <unistd.h>
#include "ar.h"
ELFTC_VCSID("$Id: util.c 3174 2015-03-27 17:13:41Z emaste $");
static void bsdar_vwarnc(struct bsdar *, int code,
const char *fmt, va_list ap);
static void bsdar_verrc(struct bsdar *bsdar, int code,
const char *fmt, va_list ap);
static void
bsdar_vwarnc(struct bsdar *bsdar, int code, const char *fmt, va_list ap)
{
fprintf(stderr, "%s: warning: ", bsdar->progname);
vfprintf(stderr, fmt, ap);
if (code != 0)
fprintf(stderr, ": %s", strerror(code));
fprintf(stderr, "\n");
}
void
bsdar_warnc(struct bsdar *bsdar, int code, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
bsdar_vwarnc(bsdar, code, fmt, ap);
va_end(ap);
}
static void
bsdar_verrc(struct bsdar *bsdar, int code, const char *fmt, va_list ap)
{
fprintf(stderr, "%s: fatal: ", bsdar->progname);
vfprintf(stderr, fmt, ap);
if (code != 0)
fprintf(stderr, ": %s", strerror(code));
fprintf(stderr, "\n");
}
void
bsdar_errc(struct bsdar *bsdar, int code, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
bsdar_verrc(bsdar, code, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
#define AR_STRMODE_SIZE 12
const char *
bsdar_strmode(mode_t m)
{
static char buf[AR_STRMODE_SIZE];
#if ELFTC_HAVE_STRMODE
/* Use the system's strmode(3). */
strmode(m, buf);
return buf;
#else
char c;
/*
* The first character of the string denotes the type of the
* entry.
*/
if (S_ISBLK(m))
c = 'b';
else if (S_ISCHR(m))
c = 'c';
else if (S_ISDIR(m))
c = 'd';
#if defined(S_ISFIFO)
else if (S_ISFIFO(m))
c = 'p';
#endif
#if defined(S_ISLNK)
else if (S_ISLNK(m))
c = 'l';
#endif
else if (S_ISREG(m))
c = '-';
#if defined(S_ISSOCK)
else if (S_ISSOCK(m))
c = 's';
#endif
else
c = '?';
buf[0] = c;
/* The next 3 characters show permissions for the owner. */
buf[1] = (m & S_IRUSR) ? 'r' : '-';
buf[2] = m & S_IWUSR ? 'w' : '-';
if (m & S_ISUID)
c = (m & S_IXUSR) ? 's' : 'S';
else
c = (m & S_IXUSR) ? 'x' : '-';
buf[3] = c;
/* The next 3 characters describe permissions for the group. */
buf[4] = (m & S_IRGRP) ? 'r' : '-';
buf[5] = m & S_IWGRP ? 'w' : '-';
if (m & S_ISGID)
c = (m & S_IXGRP) ? 's' : 'S';
else
c = (m & S_IXGRP) ? 'x' : '-';
buf[6] = c;
/* The next 3 characters describe permissions for others. */
buf[7] = (m & S_IROTH) ? 'r' : '-';
buf[8] = m & S_IWOTH ? 'w' : '-';
if (m & S_ISVTX) /* sticky bit */
c = (m & S_IXOTH) ? 't' : 'T';
else
c = (m & S_IXOTH) ? 'x' : '-';
buf[9] = c;
/* End the string with a blank and NUL-termination. */
buf[10] = ' ';
buf[11] = '\0';
return buf;
#endif /* !ELTC_HAVE_STRMODE */
}
int
bsdar_is_pseudomember(struct bsdar *bsdar, const char *name)
{
/*
* The "__.SYMDEF" member is special in the BSD format
* variant.
*/
if (bsdar->options & AR_BSD)
return (strcmp(name, AR_SYMTAB_NAME_BSD) == 0);
else
/*
* The names "/ " and "// " are special in the SVR4
* variant.
*/
return (strcmp(name, AR_STRINGTAB_NAME_SVR4) == 0 ||
strcmp(name, AR_SYMTAB_NAME_SVR4) == 0);
}

975
contrib/elftoolchain/ar/write.c Normal file
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@ -0,0 +1,975 @@
/*-
* Copyright (c) 2007 Kai Wang
* 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
* in this position and unchanged.
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``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 AUTHOR(S) 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 <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <gelf.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ar.h"
ELFTC_VCSID("$Id: write.c 3183 2015-04-10 16:18:42Z emaste $");
#define _ARMAG_LEN 8 /* length of the magic string */
#define _ARHDR_LEN 60 /* length of the archive header */
#define _INIT_AS_CAP 128 /* initial archive string table size */
#define _INIT_SYMOFF_CAP (256*(sizeof(uint32_t))) /* initial so table size */
#define _INIT_SYMNAME_CAP 1024 /* initial sn table size */
#define _MAXNAMELEN_SVR4 15 /* max member name length in svr4 variant */
#define _MAXNAMELEN_BSD 16 /* max member name length in bsd variant */
#define _TRUNCATE_LEN 15 /* number of bytes to keep for member name */
static void add_to_ar_str_table(struct bsdar *bsdar, const char *name);
static void add_to_ar_sym_table(struct bsdar *bsdar, const char *name);
static struct ar_obj *create_obj_from_file(struct bsdar *bsdar,
const char *name, time_t mtime);
static void create_symtab_entry(struct bsdar *bsdar, Elf *e);
static void free_obj(struct ar_obj *obj);
static void insert_obj(struct bsdar *bsdar, struct ar_obj *obj,
struct ar_obj *pos);
static void read_objs(struct bsdar *bsdar, const char *archive,
int checkargv);
static void write_cleanup(struct bsdar *bsdar);
static void write_data(struct bsdar *bsdar, struct archive *a,
const void *buf, size_t s);
static void write_objs(struct bsdar *bsdar);
/*
* Create an object from a file, and return the created object
* descriptor. Return NULL if either an error occurs, or if the '-u'
* option was specified and the member is not newer than the existing
* one in the archive.
*/
static struct ar_obj *
create_obj_from_file(struct bsdar *bsdar, const char *name, time_t mtime)
{
struct ar_obj *obj;
struct stat sb;
const char *bname;
char *tmpname;
int fd;
if (name == NULL)
return (NULL);
obj = malloc(sizeof(struct ar_obj));
if (obj == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
obj->elf = NULL;
if ((fd = open(name, O_RDONLY, 0)) < 0) {
bsdar_warnc(bsdar, errno, "can't open file: %s", name);
free(obj);
return (NULL);
}
tmpname = strdup(name);
if ((bname = basename(tmpname)) == NULL)
bsdar_errc(bsdar, errno, "basename failed");
if (bsdar->options & AR_TR && strlen(bname) > _TRUNCATE_LEN) {
if ((obj->name = malloc(_TRUNCATE_LEN + 1)) == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
(void)strncpy(obj->name, bname, _TRUNCATE_LEN);
obj->name[_TRUNCATE_LEN] = '\0';
} else
if ((obj->name = strdup(bname)) == NULL)
bsdar_errc(bsdar, errno, "strdup failed");
free(tmpname);
if (fstat(fd, &sb) < 0) {
bsdar_warnc(bsdar, errno, "can't fstat file: %s", obj->name);
goto giveup;
}
if (!S_ISREG(sb.st_mode)) {
bsdar_warnc(bsdar, 0, "%s is not an ordinary file", obj->name);
goto giveup;
}
if (sb.st_dev == bsdar->ar_dev && sb.st_ino == bsdar->ar_ino) {
bsdar_warnc(bsdar, 0, "cannot add archive \"%s\" to itself",
obj->name);
goto giveup;
}
/*
* If the '-u' option is specified and member is not newer
* than the existing one, we should not replace the member.
* However, if mtime == 0, i.e., if nonexistent members are to
* be forcibly replaced, then the '-u' option is to be ignored.
*/
if (mtime != 0 && bsdar->options & AR_U && sb.st_mtime <= mtime)
goto giveup;
/*
* When the '-D' option is specified, the mtime and UID/GID of
* the member will be set to 0, and the file mode will be set
* to 644. This ensures that checksums will match for two
* archives containing identical content.
*/
if (bsdar->options & AR_D) {
obj->uid = 0;
obj->gid = 0;
obj->mtime = 0;
obj->md = S_IFREG | 0644;
} else {
obj->uid = sb.st_uid;
obj->gid = sb.st_gid;
obj->mtime = sb.st_mtime;
obj->md = sb.st_mode;
}
obj->size = sb.st_size;
obj->dev = sb.st_dev;
obj->ino = sb.st_ino;
if (obj->size == 0) {
return (obj);
}
if ((obj->elf = elf_open(fd)) == NULL) {
bsdar_warnc(bsdar, 0, "file initialization failed for %s: %s",
obj->name, elf_errmsg(-1));
goto giveup;
}
/*
* Read the object fully into memory and close its file
* descriptor.
*/
if (elf_cntl(obj->elf, ELF_C_FDREAD) < 0) {
bsdar_warnc(bsdar, 0, "%s could not be read in: %s",
obj->name, elf_errmsg(-1));
goto giveup;
}
if (close(fd) < 0)
bsdar_errc(bsdar, errno, "close failed: %s",
obj->name);
return (obj);
giveup:
if (obj->elf)
elf_end(obj->elf);
if (close(fd) < 0)
bsdar_errc(bsdar, errno, "close failed: %s",
obj->name);
free(obj->name);
free(obj);
return (NULL);
}
/*
* Free an object and its associated allocations.
*/
static void
free_obj(struct ar_obj *obj)
{
if (obj->elf)
elf_end(obj->elf);
free(obj->name);
free(obj);
}
/*
* Insert an object into a list, either before/after the 'pos' obj or
* at the end of the list.
*/
static void
insert_obj(struct bsdar *bsdar, struct ar_obj *obj, struct ar_obj *pos)
{
if (obj == NULL)
bsdar_errc(bsdar, 0, "try to insert a null obj");
if (pos == NULL || obj == pos)
/*
* If the object to move happens to be the position
* obj, or if there is no position obj, move the
* object to the end.
*/
goto tail;
if (bsdar->options & AR_B) {
TAILQ_INSERT_BEFORE(pos, obj, objs);
return;
}
if (bsdar->options & AR_A) {
TAILQ_INSERT_AFTER(&bsdar->v_obj, pos, obj, objs);
return;
}
tail:
TAILQ_INSERT_TAIL(&bsdar->v_obj, obj, objs);
}
/*
* Read objects from archive into the 'v_obj' list. Note that
* 'checkargv' is set when read_objs() is used to read objects from
* the target of 'ADDLIB' command in ar script mode; in this case the
* 'argv' array specifies the members that 'ADDLIB' is to operate on.
*/
static void
read_objs(struct bsdar *bsdar, const char *archive, int checkargv)
{
struct archive *a;
struct archive_entry *entry;
struct ar_obj *obj;
const char *name;
const char *bname;
char *buff;
char **av;
size_t size;
int i, r, find;
if ((a = archive_read_new()) == NULL)
bsdar_errc(bsdar, 0, "archive_read_new failed");
archive_read_support_format_ar(a);
AC(archive_read_open_filename(a, archive, DEF_BLKSZ));
for (;;) {
r = archive_read_next_header(a, &entry);
if (r == ARCHIVE_FATAL)
bsdar_errc(bsdar, 0, "%s", archive_error_string(a));
if (r == ARCHIVE_EOF)
break;
if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY)
bsdar_warnc(bsdar, 0, "%s", archive_error_string(a));
if (r == ARCHIVE_RETRY) {
bsdar_warnc(bsdar, 0, "Retrying...");
continue;
}
name = archive_entry_pathname(entry);
/*
* Skip pseudo members.
*/
if (bsdar_is_pseudomember(bsdar, name))
continue;
/*
* If 'checkargv' is set, only read those members
* specified in argv.
*/
if (checkargv && bsdar->argc > 0) {
find = 0;
for(i = 0; i < bsdar->argc; i++) {
av = &bsdar->argv[i];
if (*av == NULL)
continue;
if ((bname = basename(*av)) == NULL)
bsdar_errc(bsdar, errno,
"basename failed");
if (strcmp(bname, name) != 0)
continue;
*av = NULL;
find = 1;
break;
}
if (!find)
continue;
}
size = archive_entry_size(entry);
if (size > 0) {
if ((buff = malloc(size)) == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
if (archive_read_data(a, buff, size) != (ssize_t)size) {
bsdar_warnc(bsdar, 0, "%s",
archive_error_string(a));
free(buff);
continue;
}
} else
buff = NULL;
obj = malloc(sizeof(struct ar_obj));
if (obj == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
obj->elf = NULL;
if (buff) {
obj->elf = elf_openmemory(buff, size);
if (obj->elf == NULL) {
bsdar_warnc(bsdar, 0, "elf_openmemory() "
"failed for %s: %s", name,
elf_errmsg(-1));
free(buff);
free(obj);
continue;
}
}
if ((obj->name = strdup(name)) == NULL)
bsdar_errc(bsdar, errno, "strdup failed");
obj->size = size;
obj->uid = archive_entry_uid(entry);
obj->gid = archive_entry_gid(entry);
obj->md = archive_entry_mode(entry);
obj->mtime = archive_entry_mtime(entry);
obj->dev = 0;
obj->ino = 0;
TAILQ_INSERT_TAIL(&bsdar->v_obj, obj, objs);
}
AC(archive_read_close(a));
ACV(archive_read_free(a));
}
/*
* Write an archive.
*/
void
ar_write_archive(struct bsdar *bsdar, int mode)
{
struct ar_obj *nobj, *obj, *obj_temp, *pos;
struct stat sb;
const char *bname;
char **av;
int i;
TAILQ_INIT(&bsdar->v_obj);
nobj = NULL;
pos = NULL;
memset(&sb, 0, sizeof(sb));
assert(mode == 'A' || mode == 'd' || mode == 'm' || mode == 'q' ||
mode == 'r' || mode == 's');
/*
* Test if the specified archive exists, to determine
* whether we are creating a new archive.
*/
if (stat(bsdar->filename, &sb) != 0) {
if (errno != ENOENT) {
bsdar_warnc(bsdar, 0, "stat %s failed",
bsdar->filename);
return;
}
/* We do not create archive in mode 'd', 'm' and 's'. */
if (mode != 'r' && mode != 'q') {
bsdar_warnc(bsdar, 0, "%s: no such file",
bsdar->filename);
return;
}
/* Issue a message if the '-c' option was not specified. */
if (!(bsdar->options & AR_C))
bsdar_warnc(bsdar, 0, "creating %s", bsdar->filename);
goto new_archive;
}
bsdar->ar_dev = sb.st_dev;
bsdar->ar_ino = sb.st_ino;
/*
* First read members from the existing archive.
*/
read_objs(bsdar, bsdar->filename, 0);
/*
* For mode 's', no member will be moved, deleted or replaced.
*/
if (mode == 's')
goto write_objs;
/*
* For mode 'q', we don't need to adjust existing members either.
* Also, -a, -b and -i are ignored in this mode. New members are
* always inserted at tail.
*/
if (mode == 'q')
goto new_archive;
/*
* Mode 'A' adds the contents of another archive to the tail
* of current archive. Note that mode 'A' is a special mode
* for the 'ADDLIB' command in ar's script mode. Currently
* there is no option that invokes this function from ar's
* command line.
*/
if (mode == 'A') {
/*
* Read objects from the target archive of the
* 'ADDLIB' command. If there are members specified in
* 'argv', read those members only, otherwise the
* entire archive will be read.
*/
read_objs(bsdar, bsdar->addlib, 1);
goto write_objs;
}
/*
* Try to find the position member specified by user.
*/
if (bsdar->options & AR_A || bsdar->options & AR_B) {
TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
if (strcmp(obj->name, bsdar->posarg) == 0) {
pos = obj;
break;
}
}
/*
* If we cannot find the position specified by the
* user, silently insert objects at the tail of the
* list.
*/
if (pos == NULL)
bsdar->options &= ~(AR_A | AR_B);
}
for (i = 0; i < bsdar->argc; i++) {
av = &bsdar->argv[i];
TAILQ_FOREACH_SAFE(obj, &bsdar->v_obj, objs, obj_temp) {
if ((bname = basename(*av)) == NULL)
bsdar_errc(bsdar, errno, "basename failed");
if (bsdar->options & AR_TR) {
if (strncmp(bname, obj->name, _TRUNCATE_LEN))
continue;
} else
if (strcmp(bname, obj->name) != 0)
continue;
if (mode == 'r') {
/*
* If the new member should not
* replace the old one, skip it.
*/
nobj = create_obj_from_file(bsdar, *av,
obj->mtime);
if (nobj == NULL)
goto skip_obj;
}
if (bsdar->options & AR_V)
(void)fprintf(bsdar->output, "%c - %s\n",
mode, *av);
TAILQ_REMOVE(&bsdar->v_obj, obj, objs);
if (mode == 'd' || mode == 'r')
free_obj(obj);
if (mode == 'm')
insert_obj(bsdar, obj, pos);
if (mode == 'r')
insert_obj(bsdar, nobj, pos);
skip_obj:
*av = NULL;
break;
}
}
new_archive:
/*
* When operating in mode 'r', directly add the specified
* objects which do not exist in current archive. When
* operating in mode 'q', all objects specified by the command
* line args are appended to the archive, without checking
* existing members in the archive.
*/
for (i = 0; i < bsdar->argc; i++) {
av = &bsdar->argv[i];
if (*av != NULL && (mode == 'r' || mode == 'q')) {
nobj = create_obj_from_file(bsdar, *av, 0);
if (nobj != NULL)
insert_obj(bsdar, nobj, pos);
if (bsdar->options & AR_V && nobj != NULL)
(void)fprintf(bsdar->output, "a - %s\n", *av);
*av = NULL;
}
}
write_objs:
write_objs(bsdar);
write_cleanup(bsdar);
}
/*
* Release memory.
*/
static void
write_cleanup(struct bsdar *bsdar)
{
struct ar_obj *obj, *obj_temp;
TAILQ_FOREACH_SAFE(obj, &bsdar->v_obj, objs, obj_temp) {
TAILQ_REMOVE(&bsdar->v_obj, obj, objs);
free_obj(obj);
}
free(bsdar->as);
free(bsdar->s_so);
free(bsdar->s_sn);
bsdar->as = NULL;
bsdar->s_so = NULL;
bsdar->s_sn = NULL;
}
/*
* Wrapper for archive_write_data().
*/
static void
write_data(struct bsdar *bsdar, struct archive *a, const void *buf, size_t s)
{
if (archive_write_data(a, buf, s) != (ssize_t)s)
bsdar_errc(bsdar, 0, "%s", archive_error_string(a));
}
/*
* Compute the size of the symbol table for an archive.
*/
static size_t
bsdar_symtab_size(struct bsdar *bsdar)
{
size_t sz;
if (bsdar->options & AR_BSD) {
/*
* A BSD style symbol table has two parts.
* Each part is preceded by its size in bytes,
* encoded as a C 'long'. In the first part,
* there are 's_cnt' entries, each entry being
* 2 'long's in size. The second part
* contains a string table.
*/
sz = 2 * sizeof(long) + (bsdar->s_cnt * 2 * sizeof(long)) +
bsdar->s_sn_sz;
} else {
/*
* An SVR4 style symbol table comprises of a 32 bit
* number holding the number of entries, followed by
* that many 32-bit offsets, followed by a string
* table.
*/
sz = sizeof(uint32_t) + bsdar->s_cnt * sizeof(uint32_t) +
bsdar->s_sn_sz;
}
return (sz);
}
static void
write_svr4_symtab_entry(struct bsdar *bsdar, struct archive *a)
{
int nr;
uint32_t i;
/* Translate offsets to big-endian form. */
for (i = 0; i < bsdar->s_cnt; i++)
bsdar->s_so[i] = htobe32(bsdar->s_so[i]);
nr = htobe32(bsdar->s_cnt);
write_data(bsdar, a, &nr, sizeof(uint32_t));
write_data(bsdar, a, bsdar->s_so, sizeof(uint32_t) *
bsdar->s_cnt);
write_data(bsdar, a, bsdar->s_sn, bsdar->s_sn_sz);
}
static void
write_bsd_symtab_entry(struct bsdar *bsdar, struct archive *a)
{
long br_sz, br_off, br_strx;
char *s;
uint32_t i;
/*
* Write out the size in the byte of the array of 'ranlib'
* descriptors to follow.
*/
br_sz = (long) (bsdar->s_cnt * 2 * sizeof(long));
write_data(bsdar, a, &br_sz, sizeof(long));
/*
* Write out the array of 'ranlib' descriptors. Each
* descriptor comprises of (a) an offset into the following
* string table and (b) a file offset to the relevant member.
*/
for (i = 0, s = bsdar->s_sn; i < bsdar->s_cnt; i++) {
br_strx = (long) (s - bsdar->s_sn);
br_off = (long) bsdar->s_so[i];
write_data(bsdar, a, &br_strx, sizeof(long));
write_data(bsdar, a, &br_off, sizeof(long));
/* Find the start of the next symbol in the string table. */
while (*s++ != '\0')
;
}
/*
* Write out the size of the string table as a 'long',
* followed by the string table itself.
*/
br_sz = (long) bsdar->s_sn_sz;
write_data(bsdar, a, &br_sz, sizeof(long));
write_data(bsdar, a, bsdar->s_sn, bsdar->s_sn_sz);
}
/*
* Write the resulting archive members.
*/
static void
write_objs(struct bsdar *bsdar)
{
struct ar_obj *obj;
struct archive *a;
struct archive_entry *entry;
size_t s_sz; /* size of archive symbol table. */
size_t pm_sz; /* size of pseudo members */
size_t namelen; /* size of member name. */
size_t obj_sz; /* size of object + extended header. */
int i;
char *buf;
const char *entry_name;
bsdar->rela_off = 0;
/*
* Create the archive symbol table and the archive string
* table, if needed.
*/
TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
if (!(bsdar->options & AR_SS) && obj->elf != NULL)
create_symtab_entry(bsdar, obj->elf);
obj_sz = 0;
namelen = strlen(obj->name);
if (bsdar->options & AR_BSD) {
/* Account for the space used by the file name. */
if (namelen > _MAXNAMELEN_BSD ||
strchr(obj->name, ' '))
obj_sz += namelen;
} else if (namelen > _MAXNAMELEN_SVR4)
add_to_ar_str_table(bsdar, obj->name);
obj_sz += obj->size; /* add the actual object size */
/* Roundup the final size and add the header length. */
bsdar->rela_off += _ARHDR_LEN + obj_sz + (obj_sz & 1);
}
/*
* Pad the symbol name string table. It is treated specially
* because symbol name table should be padded by a '\0', and
* not '\n' as for normal members. The size of the 'sn' table
* includes the pad byte.
*/
if (bsdar->s_cnt != 0 && bsdar->s_sn_sz % 2 != 0)
bsdar->s_sn[bsdar->s_sn_sz++] = '\0';
/*
* The archive string table is padded by a "\n" like a normal
* member. The difference is that the size of archive string
* table includes the pad byte, while normal members' size
* fields do not.
*/
if (bsdar->as != NULL && bsdar->as_sz % 2 != 0)
bsdar->as[bsdar->as_sz++] = '\n';
/*
* If there is a symbol table, calculate the size of pseudo
* members, and convert previously stored relative offsets to
* absolute ones.
*
* absolute_offset = relative_offset + size_of_pseudo_members)
*/
s_sz = bsdar_symtab_size(bsdar);
if (bsdar->s_cnt != 0) {
pm_sz = _ARMAG_LEN + (_ARHDR_LEN + s_sz);
if (bsdar->as != NULL) /* SVR4 archives only */
pm_sz += _ARHDR_LEN + bsdar->as_sz;
for (i = 0; (size_t) i < bsdar->s_cnt; i++)
bsdar->s_so[i] = bsdar->s_so[i] + pm_sz;
}
if ((a = archive_write_new()) == NULL)
bsdar_errc(bsdar, 0, "archive_write_new failed");
if (bsdar->options & AR_BSD)
archive_write_set_format_ar_bsd(a);
else
archive_write_set_format_ar_svr4(a);
AC(archive_write_open_filename(a, bsdar->filename));
/*
* Write the archive symbol table, if there is one. If
* options '-s' was explicitly specified or if we were invoked
* as 'ranlib', write the symbol table even if it is empty.
*/
if ((bsdar->s_cnt != 0 && !(bsdar->options & AR_SS)) ||
bsdar->options & AR_S) {
if (bsdar->options & AR_BSD)
entry_name = AR_SYMTAB_NAME_BSD;
else
entry_name = AR_SYMTAB_NAME_SVR4;
entry = archive_entry_new();
archive_entry_copy_pathname(entry, entry_name);
if ((bsdar->options & AR_D) == 0)
archive_entry_set_mtime(entry, time(NULL), 0);
archive_entry_set_size(entry, s_sz);
AC(archive_write_header(a, entry));
if (bsdar->options & AR_BSD)
write_bsd_symtab_entry(bsdar, a);
else
write_svr4_symtab_entry(bsdar, a);
archive_entry_free(entry);
}
/* Write the archive string table, if any. */
if (bsdar->as != NULL) {
entry = archive_entry_new();
archive_entry_copy_pathname(entry, AR_STRINGTAB_NAME_SVR4);
archive_entry_set_size(entry, bsdar->as_sz);
AC(archive_write_header(a, entry));
write_data(bsdar, a, bsdar->as, bsdar->as_sz);
archive_entry_free(entry);
}
/* Write normal members. */
TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
if ((buf = elf_rawfile(obj->elf, NULL)) == NULL) {
bsdar_warnc(bsdar, 0, "elf_rawfile() failed: %s",
elf_errmsg(-1));
continue;
}
entry = archive_entry_new();
archive_entry_copy_pathname(entry, obj->name);
archive_entry_set_uid(entry, obj->uid);
archive_entry_set_gid(entry, obj->gid);
archive_entry_set_mode(entry, obj->md);
archive_entry_set_size(entry, obj->size);
archive_entry_set_mtime(entry, obj->mtime, 0);
archive_entry_set_dev(entry, obj->dev);
archive_entry_set_ino(entry, obj->ino);
archive_entry_set_filetype(entry, AE_IFREG);
AC(archive_write_header(a, entry));
write_data(bsdar, a, buf, obj->size);
archive_entry_free(entry);
}
AC(archive_write_close(a));
ACV(archive_write_free(a));
}
/*
* Extract global symbols from ELF binary members.
*/
static void
create_symtab_entry(struct bsdar *bsdar, Elf *e)
{
Elf_Scn *scn;
GElf_Shdr shdr;
GElf_Sym sym;
Elf_Data *data;
char *name;
size_t n, shstrndx;
int elferr, tabndx, len, i;
if (elf_kind(e) != ELF_K_ELF) {
/* Silently a ignore non-ELF member. */
return;
}
if (elf_getshstrndx(e, &shstrndx) == 0) {
bsdar_warnc(bsdar, 0, "elf_getshstrndx failed: %s",
elf_errmsg(-1));
return;
}
tabndx = -1;
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
if (gelf_getshdr(scn, &shdr) != &shdr) {
bsdar_warnc(bsdar, 0,
"elf_getshdr failed: %s", elf_errmsg(-1));
continue;
}
if ((name = elf_strptr(e, shstrndx, shdr.sh_name)) == NULL) {
bsdar_warnc(bsdar, 0,
"elf_strptr failed: %s", elf_errmsg(-1));
continue;
}
if (strcmp(name, ".strtab") == 0) {
tabndx = elf_ndxscn(scn);
break;
}
}
elferr = elf_errno();
if (elferr != 0)
bsdar_warnc(bsdar, 0, "elf_nextscn failed: %s",
elf_errmsg(elferr));
if (tabndx == -1) {
bsdar_warnc(bsdar, 0, "can't find .strtab section");
return;
}
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
if (gelf_getshdr(scn, &shdr) != &shdr) {
bsdar_warnc(bsdar, 0, "elf_getshdr failed: %s",
elf_errmsg(-1));
continue;
}
if (shdr.sh_type != SHT_SYMTAB)
continue;
data = NULL;
n = 0;
while (n < shdr.sh_size &&
(data = elf_getdata(scn, data)) != NULL) {
len = data->d_size / shdr.sh_entsize;
for (i = 0; i < len; i++) {
if (gelf_getsym(data, i, &sym) != &sym) {
bsdar_warnc(bsdar, 0,
"gelf_getsym failed: %s",
elf_errmsg(-1));
continue;
}
/* Keep only global and weak symbols. */
if (GELF_ST_BIND(sym.st_info) != STB_GLOBAL &&
GELF_ST_BIND(sym.st_info) != STB_WEAK)
continue;
/* Keep only defined symbols. */
if (sym.st_shndx == SHN_UNDEF)
continue;
if ((name = elf_strptr(e, tabndx,
sym.st_name)) == NULL) {
bsdar_warnc(bsdar, 0,
"elf_strptr failed: %s",
elf_errmsg(-1));
continue;
}
add_to_ar_sym_table(bsdar, name);
}
}
}
elferr = elf_errno();
if (elferr != 0)
bsdar_warnc(bsdar, 0, "elf_nextscn failed: %s",
elf_errmsg(elferr));
}
/*
* Append to the archive string table buffer.
*/
static void
add_to_ar_str_table(struct bsdar *bsdar, const char *name)
{
if (bsdar->as == NULL) {
bsdar->as_cap = _INIT_AS_CAP;
bsdar->as_sz = 0;
if ((bsdar->as = malloc(bsdar->as_cap)) == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
}
/*
* The space required for holding one member name in the 'as'
* table includes: strlen(name) + (1 for '/') + (1 for '\n') +
* (possibly 1 for padding).
*/
while (bsdar->as_sz + strlen(name) + 3 > bsdar->as_cap) {
bsdar->as_cap *= 2;
bsdar->as = realloc(bsdar->as, bsdar->as_cap);
if (bsdar->as == NULL)
bsdar_errc(bsdar, errno, "realloc failed");
}
strncpy(&bsdar->as[bsdar->as_sz], name, strlen(name));
bsdar->as_sz += strlen(name);
bsdar->as[bsdar->as_sz++] = '/';
bsdar->as[bsdar->as_sz++] = '\n';
}
/*
* Append to the archive symbol table buffer.
*/
static void
add_to_ar_sym_table(struct bsdar *bsdar, const char *name)
{
if (bsdar->s_so == NULL) {
if ((bsdar->s_so = malloc(_INIT_SYMOFF_CAP)) ==
NULL)
bsdar_errc(bsdar, errno, "malloc failed");
bsdar->s_so_cap = _INIT_SYMOFF_CAP;
bsdar->s_cnt = 0;
}
if (bsdar->s_sn == NULL) {
if ((bsdar->s_sn = malloc(_INIT_SYMNAME_CAP)) == NULL)
bsdar_errc(bsdar, errno, "malloc failed");
bsdar->s_sn_cap = _INIT_SYMNAME_CAP;
bsdar->s_sn_sz = 0;
}
if (bsdar->s_cnt * sizeof(uint32_t) >= bsdar->s_so_cap) {
bsdar->s_so_cap *= 2;
bsdar->s_so = realloc(bsdar->s_so, bsdar->s_so_cap);
if (bsdar->s_so == NULL)
bsdar_errc(bsdar, errno, "realloc failed");
}
bsdar->s_so[bsdar->s_cnt] = bsdar->rela_off;
bsdar->s_cnt++;
/*
* The space required for holding one symbol name in the 'sn'
* table includes: strlen(name) + (1 for '\n') + (possibly 1
* for padding).
*/
while (bsdar->s_sn_sz + strlen(name) + 2 > bsdar->s_sn_cap) {
bsdar->s_sn_cap *= 2;
bsdar->s_sn = realloc(bsdar->s_sn, bsdar->s_sn_cap);
if (bsdar->s_sn == NULL)
bsdar_errc(bsdar, errno, "realloc failed");
}
strncpy(&bsdar->s_sn[bsdar->s_sn_sz], name, strlen(name));
bsdar->s_sn_sz += strlen(name);
bsdar->s_sn[bsdar->s_sn_sz++] = '\0';
}

11
contrib/elftoolchain/elfdump/Makefile Normal file
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# $Id: Makefile 2289 2011-12-04 07:11:47Z jkoshy $
TOP= ..
PROG= elfdump
WARNS?= 6
DPADD= ${LIBELFTC} ${LIBELF}
LDADD= -lelftc -lelf
.include "${TOP}/mk/elftoolchain.prog.mk"

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.\" Copyright (c) 2003 David O'Brien
.\" 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.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
.\"
.\" $FreeBSD: src/usr.bin/elfdump/elfdump.1,v 1.6 2005/01/18 13:43:48 ru Exp $
.\" $Id: elfdump.1 3195 2015-05-12 17:22:19Z emaste $
.\"
.Dd August 25, 2011
.Dt ELFDUMP 1
.Os
.Sh NAME
.Nm elfdump
.Nd "display information about"
.Tn ELF
files
.Sh SYNOPSIS
.Nm
.Fl a | cdeGhiknprsv
.Op Fl S
.Op Fl V
.Op Fl N Ar name
.Op Fl w Ar file
.Ar file ...
.Sh DESCRIPTION
The
.Nm
utility
dumps various information about the specified
.Tn ELF
.Ar file .
.Pp
The options are as follows:
.Bl -tag -width ".Fl w Ar file"
.It Fl a
Dump all information.
.It Fl c
Dump shared headers.
.It Fl d
Dump dynamic symbols.
.It Fl e
Dump ELF header.
.It Fl G
Dump the GOT.
.It Fl h
Dump the hash values.
.It Fl i
Dump the dynamic interpreter.
.It Fl k
Dump the ELF checksum.
.It Fl n
Dump note sections.
.It Fl N Ar name
Only dump the section with the specific
.Ar name .
Archive symbol table can be specified with
the special section name ARSYM.
More than one
.Fl N
option may appear.
.It Fl p
Dump the program header.
.It Fl r
Dump relocations.
.It Fl s
Dump the symbol table.
.It Fl S
Output in the Solaris
.Nm
format.
.It Fl v
Dump the symbol-versioning sections.
.It Fl V
Print a version identifier and exit.
.It Fl w Ar file
Write output to a
.Ar file
instead of the standard output.
.El
.Sh EXIT STATUS
.Ex -std
.Sh EXAMPLES
The following is an example of a typical usage
of the
.Nm
command:
.Pp
.Dl "elfdump -a -w output /bin/ls"
.Pp
To dump the content of '.dynsym' symbol table:
.Pp
.Dl "elfdump -s -N .dynsym /bin/ls"
.Pp
To dump the archive symbol table,
but not the symbol tables of archive members:
.Pp
.Dl "elfdump -s -N ARSYM /usr/lib/libelf.a"
.Pp
To dump the content of .got section and
the symbol-versioning sections in Solaris
.Nm
format:
.Pp
.Dl "elfdump -S -Gv /bin/ls"
.Sh SEE ALSO
.Xr objdump 1 ,
.Xr readelf 1 ,
.Xr elf 3
.Rs
.%A "AT&T Unix Systems Labs"
.%T "System V Application Binary Interface"
.%O http://www.sco.com/developers/gabi/
.Re
.Sh HISTORY
The
.Nm
utility first appeared in
.Fx 5.0 .
.Sh AUTHORS
.An -nosplit
The
.Nm
utility
was written by
.An Jake Burkholder Aq Mt jake@FreeBSD.org .
Later it was rewritten based on the
libelf library.
This
manual page was written by
.An David O'Brien Aq Mt obrien@FreeBSD.org .
.Pp
.An Kai Wang Aq Mt kaiw@FreeBSD.org
rewrote it using the
.Lb libelf
and implemented additional functionality.
.Sh BUGS
Does not fully implement the
.Tn ELF
gABI.

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