minix/commands/aal/archiver.c

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/*
* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
* See the copyright notice in the ACK home directory, in the file "Copyright".
*/
/* ar - archiver Author: Michiel Huisjes */
/* Made into arch/aal by Ceriel Jacobs
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*/
#include <sys/types.h>
#include <fcntl.h>
#include "rd.h"
#include "wr_bytes.h"
#include "wr_long.h"
#include "wr_int2.h"
#include "arch.h"
#include "archiver.h"
#include "print.h"
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static char RcsId[] = "$Header$";
/*
* Usage: [arch|aal] [adprtvx] archive [file] ...
* v: verbose
* x: extract
* a: append
* r: replace (append when not in archive)
* d: delete
* t: print contents of archive
* p: print named files
* l: temporaries in current directory instead of /usr/tmp
* c: don't give "create" message
* u: replace only if dated later than member in archive
#ifdef DISTRIBUTION
* D: make distribution: use distr_time, uid=2, gid=2, mode=0644
#endif
*/
#include <stdlib.h>
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#include <string.h>
#include <stdio.h>
#include <unistd.h>
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#include <sys/types.h>
#include <sys/stat.h>
Build NetBSD libc library in world in ELF mode. 3 sets of libraries are built now: . ack: all libraries that ack can compile (/usr/lib/i386/) . clang+elf: all libraries with minix headers (/usr/lib/) . clang+elf: all libraries with netbsd headers (/usr/netbsd/) Once everything can be compiled with netbsd libraries and headers, the /usr/netbsd hierarchy will be obsolete and its libraries compiled with netbsd headers will be installed in /usr/lib, and its headers in /usr/include. (i.e. minix libc and current minix headers set will be gone.) To use the NetBSD libc system (libraries + headers) before it is the default libc, see: http://wiki.minix3.org/en/DevelopersGuide/UsingNetBSDCode This wiki page also documents the maintenance of the patch files of minix-specific changes to imported NetBSD code. Changes in this commit: . libsys: Add NBSD compilation and create a safe NBSD-based libc. . Port rest of libraries (except libddekit) to new header system. . Enable compilation of libddekit with new headers. . Enable kernel compilation with new headers. . Enable drivers compilation with new headers. . Port legacy commands to new headers and libc. . Port servers to new headers. . Add <sys/sigcontext.h> in compat library. . Remove dependency file in tree. . Enable compilation of common/lib/libc/atomic in libsys . Do not generate RCSID strings in libc. . Temporarily disable zoneinfo as they are incompatible with NetBSD format . obj-nbsd for .gitignore . Procfs: use only integer arithmetic. (Antoine Leca) . Increase ramdisk size to create NBSD-based images. . Remove INCSYMLINKS handling hack. . Add nbsd_include/sys/exec_elf.h . Enable ELF compilation with NBSD libc. . Add 'make nbsdsrc' in tools to download reference NetBSD sources. . Automate minix-port.patch creation. . Avoid using fstavfs() as it is *extremely* slow and unneeded. . Set err() as PRIVATE to avoid name clash with libc. . [NBSD] servers/vm: remove compilation warnings. . u32 is not a long in NBSD headers. . UPDATING info on netbsd hierarchy . commands fixes for netbsd libc
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#ifdef __NBSD_LIBC
#include <sys/time.h>
#endif
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#ifndef S_IREAD
#define S_IREAD S_IRUSR
#endif
#ifndef S_IWRITE
#define S_IWRITE S_IWUSR
#endif
#ifndef S_IEXEC
#define S_IEXEC S_IXUSR
#endif
#include <signal.h>
#include <arch.h>
#ifdef AAL
#include <ranlib.h>
#include <out.h>
#define MAGIC_NUMBER AALMAG
long offset;
struct ranlib *tab;
unsigned int tnum = 0;
char *tstrtab;
unsigned int tssiz = 0;
long time();
unsigned int tabsz, strtabsz;
#else
#define MAGIC_NUMBER ARMAG
#endif
long lseek();
#define odd(nr) (nr & 01)
#define even(nr) (odd(nr) ? nr + 1 : nr)
typedef char BOOL;
#define FALSE 0
#define TRUE 1
#define READ 0
#define APPEND 2
#define CREATE 1
#define MEMBER struct ar_hdr
#define IO_SIZE (10 * 1024)
#define equal(str1, str2) (!strncmp((str1), (str2), 14))
#ifndef S_ISDIR
#define S_ISDIR(m) (m & S_IFDIR) /* is a directory */
#endif
BOOL verbose;
BOOL app_fl;
BOOL ex_fl;
BOOL show_fl;
BOOL pr_fl;
BOOL rep_fl;
BOOL del_fl;
BOOL nocr_fl;
BOOL local_fl;
BOOL update_fl;
#ifdef DISTRIBUTION
BOOL distr_fl;
long distr_time;
#endif
int ar_fd;
char io_buffer[IO_SIZE];
char *progname;
char temp_buf[32];
char *temp_arch = &temp_buf[0];
extern char *mktemp();
extern char *ctime();
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/* Forward declarations. */
static void enter_name(struct outname *namep);
static void do_names(struct outhead *headp);
static void do_object(int f, long size);
static void show(char *s, char *name);
static void write_symdef(void);
static void mwrite(int fd, char *address, int bytes);
static void extract(register MEMBER *member);
static void copy_member(MEMBER *member, int from, int to, int extracting);
static void add(char *name, int fd, char *mess);
static void get(int argc, char *argv[]);
/*VARARGS2*/
void error1(BOOL quit, char *str1)
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{
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fputs(str1,stderr);
if (quit) {
unlink(temp_arch);
_exit(1);
}
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}
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void error2(BOOL quit, char *str1, char *str2)
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{
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fprintf(stderr,str1,str2);
if (quit) {
unlink(temp_arch);
_exit(1);
}
}
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void error3(BOOL quit, char *str1, char *str2, char *str3)
{
fprintf(stderr,str1,str2,str3);
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if (quit) {
unlink(temp_arch);
_exit(1);
}
}
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void usage()
{
error3(TRUE, "usage: %s %s archive [file] ...\n",
progname,
#ifdef AAL
"[acdrtxvlu]"
#else
"[acdprtxvlu]"
#endif
);
}
char *basename(char *path)
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{
register char *ptr = path;
register char *last = NULL;
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while (*ptr != '\0') {
if (*ptr == '/')
last = ptr;
ptr++;
}
if (last == NULL)
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return path;
if (*(last + 1) == '\0') {
*last = '\0';
return basename(path);
}
return last + 1;
}
extern unsigned int rd_unsigned2();
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int open_archive(char *name, int mode)
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{
unsigned short magic = 0;
int fd;
if (mode == CREATE) {
if ((fd = creat(name, 0666)) < 0)
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error2(TRUE, "cannot creat %s\n", name);
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magic = MAGIC_NUMBER;
wr_int2(fd, magic);
return fd;
}
if ((fd = open(name, mode)) < 0) {
if (mode == APPEND) {
close(open_archive(name, CREATE));
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if (!nocr_fl) error3(FALSE, "%s: creating %s\n", progname, name);
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return open_archive(name, APPEND);
}
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error2(TRUE, "cannot open %s\n", name);
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}
lseek(fd, 0L, 0);
magic = rd_unsigned2(fd);
if (magic != AALMAG && magic != ARMAG)
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error2(TRUE, "%s is not in ar format\n", name);
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return fd;
}
#if __STDC__
void catch(int sig)
#else
catch()
#endif
{
unlink(temp_arch);
_exit (2);
}
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int main(int argc, char *argv[])
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{
register char *ptr;
int needs_arg = 0;
progname = argv[0];
if (argc < 3)
usage();
for (ptr = argv[1]; *ptr; ptr++) {
switch (*ptr) {
case 't' :
show_fl = TRUE;
break;
case 'v' :
verbose = TRUE;
break;
case 'x' :
ex_fl = TRUE;
break;
case 'a' :
needs_arg = 1;
app_fl = TRUE;
break;
case 'c' :
nocr_fl = TRUE;
break;
#ifndef AAL
case 'p' :
needs_arg = 1;
pr_fl = TRUE;
break;
#endif
case 'd' :
needs_arg = 1;
del_fl = TRUE;
break;
case 'r' :
needs_arg = 1;
rep_fl = TRUE;
break;
case 'l' :
local_fl = TRUE;
break;
case 'u' :
update_fl = TRUE;
break;
#ifdef DISTRIBUTION
case 'D' :
distr_fl = TRUE;
break;
#endif
default :
usage();
}
}
if (needs_arg && argc <= 3)
usage();
#ifdef DISTRIBUTION
if (distr_fl) {
struct stat statbuf;
stat(progname, &statbuf);
distr_time = statbuf.st_mtime;
}
#endif
if (local_fl) strcpy(temp_arch, "ar.XXXXXX");
else strcpy(temp_arch, "/usr/tmp/ar.XXXXXX");
if (app_fl + ex_fl + del_fl + rep_fl + show_fl + pr_fl != 1)
usage();
if (update_fl && !rep_fl)
usage();
if (rep_fl || del_fl
#ifdef AAL
|| app_fl
#endif
) {
mktemp(temp_arch);
}
#ifdef AAL
tab = (struct ranlib *) malloc(512 * sizeof(struct ranlib));
tstrtab = malloc(4096);
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if (!tab || !tstrtab) error1(TRUE,"Out of core\n");
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tabsz = 512;
strtabsz = 4096;
#endif
signal(SIGINT, catch);
get(argc, argv);
return 0;
}
MEMBER *
get_member()
{
static MEMBER member;
again:
if (rd_arhdr(ar_fd, &member) == 0)
return NULL;
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if (member.ar_size < 0) {
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error1(TRUE, "archive has member with negative size\n");
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}
#ifdef AAL
if (equal(SYMDEF, member.ar_name)) {
lseek(ar_fd, member.ar_size, 1);
goto again;
}
#endif
return &member;
}
char *get_mode();
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static void get(int argc, char *argv[])
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{
register MEMBER *member;
int i = 0;
int temp_fd, read_chars;
ar_fd = open_archive(argv[2], (show_fl || pr_fl || ex_fl) ? READ : APPEND);
if (rep_fl || del_fl
#ifdef AAL
|| app_fl
#endif
)
temp_fd = open_archive(temp_arch, CREATE);
while ((member = get_member()) != NULL) {
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if (argc > 3) {
for (i = 3; i < argc; i++) {
if (equal(basename(argv[i]), member->ar_name))
break;
}
if (i == argc || app_fl) {
if (rep_fl || del_fl
#ifdef AAL
|| app_fl
#endif
) {
#ifdef AAL
if (i != argc) {
print("%s: already in archive\n", argv[i]);
argv[i] = "";
}
#endif
wr_arhdr(temp_fd, member);
copy_member(member, ar_fd, temp_fd, 0);
}
else {
#ifndef AAL
if (app_fl && i != argc) {
print("%s: already in archive\n", argv[i]);
argv[i] = "";
}
#endif
lseek(ar_fd, even(member->ar_size),1);
}
continue;
}
}
if (ex_fl || pr_fl)
extract(member);
else {
if (rep_fl) {
int isold = 0;
if(update_fl) {
struct stat status;
if (stat(argv[i], &status) >= 0) {
if(status.st_mtime <= member->ar_date)
isold = 1;
}
}
if(!isold)
add(argv[i], temp_fd, "r - %s\n");
else {
wr_arhdr(temp_fd, member);
copy_member(member, ar_fd, temp_fd, 0);
if(verbose)
show("r - %s (old)\n", member->ar_name);
}
}
else if (show_fl) {
char buf[sizeof(member->ar_name) + 2];
register char *p = buf, *q = member->ar_name;
while (q <= &member->ar_name[sizeof(member->ar_name)-1] && *q) {
*p++ = *q++;
}
*p++ = '\n';
*p = '\0';
if (verbose) {
char *mode = get_mode(member->ar_mode);
char *date = ctime(&(member->ar_date));
*(date + 16) = '\0';
*(date + 24) = '\0';
print("%s%3u/%u%7ld %s %s %s",
mode,
(unsigned) (member->ar_uid & 0377),
(unsigned) (member->ar_gid & 0377),
member->ar_size,
date+4,
date+20,
buf);
}
else print(buf);
}
else if (del_fl)
show("d - %s\n", member->ar_name);
lseek(ar_fd, even(member->ar_size), 1);
}
argv[i] = "";
}
if (argc > 3) {
for (i = 3; i < argc; i++)
if (argv[i][0] != '\0') {
#ifndef AAL
if (app_fl)
add(argv[i], ar_fd, "a - %s\n");
else
#endif
if (rep_fl
#ifdef AAL
|| app_fl
#endif
)
add(argv[i], temp_fd, "a - %s\n");
else {
print("%s: not found\n", argv[i]);
}
}
}
if (rep_fl || del_fl
#ifdef AAL
|| app_fl
#endif
) {
signal(SIGINT, SIG_IGN);
close(ar_fd);
close(temp_fd);
ar_fd = open_archive(argv[2], CREATE);
temp_fd = open_archive(temp_arch, APPEND);
#ifdef AAL
write_symdef();
#endif
while ((read_chars = read(temp_fd, io_buffer, IO_SIZE)) > 0)
mwrite(ar_fd, io_buffer, read_chars);
close(temp_fd);
unlink(temp_arch);
}
close(ar_fd);
}
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static void add(char *name, int fd, char *mess)
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{
static MEMBER member;
register int read_chars;
struct stat status;
int src_fd;
if (stat(name, &status) < 0) {
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error2(FALSE, "cannot find %s\n", name);
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return;
}
else if (S_ISDIR(status.st_mode)) {
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error2(FALSE, "%s is a directory (ignored)\n", name);
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return;
}
else if ((src_fd = open(name, 0)) < 0) {
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error2(FALSE, "cannot open %s\n", name);
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return;
}
strncpy (member.ar_name, basename (name), sizeof(member.ar_name));
member.ar_uid = status.st_uid;
member.ar_gid = status.st_gid;
member.ar_mode = status.st_mode;
member.ar_date = status.st_mtime;
member.ar_size = status.st_size;
#ifdef DISTRIBUTION
if (distr_fl) {
member.ar_uid = 2;
member.ar_gid = 2;
member.ar_mode = 0644;
member.ar_date = distr_time;
}
#endif
wr_arhdr(fd, &member);
#ifdef AAL
do_object(src_fd, member.ar_size);
lseek(src_fd, 0L, 0);
offset += AR_TOTAL + even(member.ar_size);
#endif
while (status.st_size > 0) {
int x = IO_SIZE;
read_chars = x;
if (status.st_size < x) {
x = status.st_size;
read_chars = x;
status.st_size = 0;
x = even(x);
}
else status.st_size -= x;
if (read(src_fd, io_buffer, read_chars) != read_chars) {
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error2(FALSE,"%s seems to shrink\n", name);
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break;
}
mwrite(fd, io_buffer, x);
}
if (verbose)
show(mess, member.ar_name);
close(src_fd);
}
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static void extract(register MEMBER *member)
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{
int fd = 1;
char buf[sizeof(member->ar_name) + 1];
strncpy(buf, member->ar_name, sizeof(member->ar_name));
buf[sizeof(member->ar_name)] = 0;
if (pr_fl == FALSE && (fd = creat(buf, 0666)) < 0) {
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error2(FALSE, "cannot create %s\n", buf);
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fd = -1;
}
if (verbose) {
if (pr_fl == FALSE) show("x - %s\n", buf);
else show("\n<%s>\n\n", buf);
}
copy_member(member, ar_fd, fd, 1);
if (fd >= 0 && fd != 1)
close(fd);
if (pr_fl == FALSE) chmod(buf, member->ar_mode);
}
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static void copy_member(MEMBER *member, int from, int to, int extracting)
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{
register int rest;
long mem_size = member->ar_size;
BOOL is_odd = odd(mem_size) ? TRUE : FALSE;
#ifdef AAL
if (! extracting) {
long pos = lseek(from, 0L, 1);
do_object(from, mem_size);
offset += AR_TOTAL + even(mem_size);
lseek(from, pos, 0);
}
#endif
do {
rest = mem_size > (long) IO_SIZE ? IO_SIZE : (int) mem_size;
if (read(from, io_buffer, rest) != rest) {
char buf[sizeof(member->ar_name) + 1];
strncpy(buf, member->ar_name, sizeof(member->ar_name));
buf[sizeof(member->ar_name)] = 0;
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error2(TRUE, "read error on %s\n", buf);
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}
if (to >= 0) mwrite(to, io_buffer, rest);
mem_size -= (long) rest;
} while (mem_size > 0L);
if (is_odd) {
lseek(from, 1L, 1);
if (to >= 0 && ! extracting)
lseek(to, 1L, 1);
}
}
char *
get_mode(mode)
register int mode;
{
static char mode_buf[11];
register int tmp = mode;
int i;
mode_buf[9] = ' ';
for (i = 0; i < 3; i++) {
mode_buf[i * 3] = (tmp & S_IREAD) ? 'r' : '-';
mode_buf[i * 3 + 1] = (tmp & S_IWRITE) ? 'w' : '-';
mode_buf[i * 3 + 2] = (tmp & S_IEXEC) ? 'x' : '-';
tmp <<= 3;
}
if (mode & S_ISUID)
mode_buf[2] = 's';
if (mode & S_ISGID)
mode_buf[5] = 's';
return mode_buf;
}
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void wr_fatal()
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{
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error1(TRUE, "write error\n");
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}
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void rd_fatal()
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{
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error1(TRUE, "read error\n");
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}
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static void mwrite(int fd, char *address, int bytes)
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{
if (write(fd, address, bytes) != bytes)
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error1(TRUE, "write error\n");
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}
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static void show(char *s, char *name)
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{
MEMBER x;
char buf[sizeof(x.ar_name)+1];
register char *p = buf, *q = name;
while (q <= &name[sizeof(x.ar_name)-1] && *q) *p++ = *q++;
*p++ = '\0';
print(s, buf);
}
#ifdef AAL
/*
* Write out the ranlib table: first 4 bytes telling how many ranlib structs
* there are, followed by the ranlib structs,
* then 4 bytes giving the size of the string table, followed by the string
* table itself.
*/
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static void write_symdef(void)
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{
register struct ranlib *ran;
register int i;
register long delta;
MEMBER arbuf;
if (odd(tssiz))
tstrtab[tssiz++] = '\0';
for (i = 0; i < sizeof(arbuf.ar_name); i++)
arbuf.ar_name[i] = '\0';
strcpy(arbuf.ar_name, SYMDEF);
arbuf.ar_size = 4 + 2 * 4 * (long)tnum + 4 + (long)tssiz;
time(&arbuf.ar_date);
arbuf.ar_uid = getuid();
arbuf.ar_gid = getgid();
arbuf.ar_mode = 0444;
#ifdef DISTRIBUTION
if (distr_fl) {
arbuf.ar_uid = 2;
arbuf.ar_gid = 2;
arbuf.ar_date = distr_time;
}
#endif
wr_arhdr(ar_fd,&arbuf);
wr_long(ar_fd, (long) tnum);
/*
* Account for the space occupied by the magic number
* and the ranlib table.
*/
delta = 2 + AR_TOTAL + arbuf.ar_size;
for (ran = tab; ran < &tab[tnum]; ran++) {
ran->ran_pos += delta;
}
wr_ranlib(ar_fd, tab, (long) tnum);
wr_long(ar_fd, (long) tssiz);
wr_bytes(ar_fd, tstrtab, (long) tssiz);
}
/*
* Return whether the bytes in `buf' form a good object header.
* The header is put in `headp'.
*/
int
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is_outhead(register struct outhead *headp)
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{
return !BADMAGIC(*headp) && headp->oh_nname != 0;
}
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static void do_object(int f, long size)
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{
struct outhead headbuf;
if (size < SZ_HEAD) {
/* It can't be an object file. */
return;
}
/*
* Read a header to see if it is an object file.
*/
if (! rd_fdopen(f)) {
rd_fatal();
}
rd_ohead(&headbuf);
if (!is_outhead(&headbuf)) {
return;
}
do_names(&headbuf);
}
/*
* First skip the names and read in the string table, then seek back to the
* name table and read and write the names one by one. Update the ranlib table
* accordingly.
*/
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static void do_names(struct outhead *headp)
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{
register char *strings;
register int nnames = headp->oh_nname;
#define NNAMES 100
struct outname namebuf[NNAMES];
long xxx = OFF_CHAR(*headp);
if ( headp->oh_nchar != (unsigned int)headp->oh_nchar ||
(strings = malloc((unsigned int)headp->oh_nchar)) == (char *)0
) {
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error1(TRUE, "string table too big\n");
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}
rd_string(strings, headp->oh_nchar);
while (nnames) {
int i = nnames >= NNAMES ? NNAMES : nnames;
register struct outname *p = namebuf;
nnames -= i;
rd_name(namebuf, i);
while (i--) {
long off = p->on_foff - xxx;
if (p->on_foff == (long)0) {
p++;
continue; /* An unrecognizable name. */
}
p->on_mptr = strings + off;
/*
* Only enter names that are exported and are really
* defined. Also enter common names. Note, that
* this might cause problems when the name is really
* defined in a later file, with a value != 0.
* However, this problem also exists on the Unix
* ranlib archives.
*/
if ( (p->on_type & S_EXT) &&
(p->on_type & S_TYP) != S_UND
)
enter_name(p);
p++;
}
}
free(strings);
}
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static void enter_name(struct outname *namep)
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{
register char *cp;
if (tnum >= tabsz) {
tab = (struct ranlib *)
realloc((char *) tab, (tabsz += 512) * sizeof(struct ranlib));
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if (! tab) error1(TRUE, "Out of core\n");
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}
tab[tnum].ran_off = tssiz;
tab[tnum].ran_pos = offset;
for (cp = namep->on_mptr;; cp++) {
if (tssiz >= strtabsz) {
tstrtab = realloc(tstrtab, (strtabsz += 4096));
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if (! tstrtab) error1(TRUE, "string table overflow\n");
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}
tstrtab[tssiz++] = *cp;
if (!*cp) break;
}
tnum++;
}
#endif /* AAL */