Bug 20643
| Summary: | /usr/bin/kzip is obsolete; remove it? | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Peter Pentchev <roam> |
| Component: | bin | Assignee: | dwmalone |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 4.1-STABLE | ||
| Hardware: | Any | ||
| OS: | Any | ||
|
Description
Peter Pentchev
2000-08-16 13:10:01 UTC
On 16 Aug 2000 09:51:05 GMT, Peter Pentchev wrote:
> >Number: 20643
> >Category: bin
> >Synopsis: /usr/bin/kzip is obsolete; remove it?
Poul-Henning, what do you think about this?
Ciao,
Sheldon.
On Wed, Aug 16, 2000 at 09:51:05AM -0000, Peter Pentchev wrote:
> One of the following:
> - remove /usr/bin/kzip from the build tree (possibly symlink
> /usr/sbin/kgzip to it); or
> - add a big red-letter warning to kzip's manpage that it cannot process
> ELF kernels; and/or
> - add a reference to kgzip in kzip's manpage.
I have some patches to kgzip which allow it to produce a.out executables,
which will properly obsolete kzip. I'll try and clean them up and commit
them. One complication is that it requires an a.out object file, which
I guess could be added to the aout compatibility stuff.
David.
Responsible Changed From-To: freebsd-bugs->dwmalone I have some patches in this area. In message <957.966432802@axl.ops.uunet.co.za>, Sheldon Hearn writes: > > >On 16 Aug 2000 09:51:05 GMT, Peter Pentchev wrote: > >> >Number: 20643 >> >Category: bin >> >Synopsis: /usr/bin/kzip is obsolete; remove it? > >Poul-Henning, what do you think about this? Found this in my mailbox, sorry about the delay. kill it. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. We've been using this patch to kgzip to produce a.out gzipped ELF
kernels. This is very useful, as it means we don't have to reburn
about 40 EPROMS that only know how to load a.out images. It is
based on the code in kzip, which could be completly obsolete if
kgzip had this patch.
Naturally, it requires a.out version of kgzldr.o and the a.out
linker. I've included a uuencoded copy of the loader we've been
using (it's just the regular kgzldr with underscores added in the
necesary places). Maybe this could be added to the a.out compatability
libs?
David.
diff -u -r /usr/src/usr.sbin/kgzip/kgzcmp.c kgzip/kgzcmp.c
--- /usr/src/usr.sbin/kgzip/kgzcmp.c Thu Aug 3 12:57:02 2000
+++ kgzip/kgzcmp.c Fri Aug 4 22:51:35 2000
@@ -42,13 +42,11 @@
#include "elfhdr.h"
#include "kgzip.h"
-#define KGZOFF (sizeof(struct kgz_elfhdr) + sizeof(struct kgz_hdr))
-
#define F_AOUT 1 /* Input format: a.out */
#define F_ELF 2 /* Input format: ELF32 */
static void mk_data(const struct iodesc *i, const struct iodesc *,
- struct kgz_hdr *);
+ struct kgz_hdr *,size_t);
static int ld_elf(const struct iodesc *, const struct iodesc *,
struct kgz_hdr *, const Elf32_Ehdr *);
static int ld_aout(const struct iodesc *, const struct iodesc *,
@@ -72,8 +70,8 @@
kh->ident[1] = KGZ_ID1;
kh->ident[2] = KGZ_ID2;
kh->ident[3] = KGZ_ID3;
- xseek(&ido, KGZOFF);
- mk_data(&idi, &ido, kh);
+ xseek(&ido, sizeof(ehdr) + sizeof(*kh));
+ mk_data(&idi, &ido, kh, sizeof(ehdr) + sizeof(*kh));
kh->dload &= 0xffffff;
kh->entry &= 0xffffff;
xseek(&ido, 0);
@@ -86,12 +84,59 @@
xclose(&idi);
}
+char string_names[] = {"_kgz\0_kgz_ndata\0"};
+
+struct nlist var_names[2] = { /* Symbol table */
+ { { (char*) 4 }, N_EXT|N_TEXT, 0, 0, 0 }, /* _kgz */
+ { { (char*) 9 }, N_EXT|N_TEXT, 0, 0, 0 }, /* _kgz_ndata */
+};
+
+void
+aoutkgzcmp(struct kgz_hdr *kh, const char *f1, const char *f2)
+{
+ struct iodesc idi, ido;
+ struct exec hdr;
+ unsigned long len;
+
+ if ((idi.fd = open(idi.fname = f1, O_RDONLY)) == -1)
+ err(1, "%s", idi.fname);
+ if ((ido.fd = open(ido.fname = f2, O_CREAT | O_TRUNC | O_WRONLY,
+ 0666)) == -1)
+ err(1, "%s", ido.fname);
+ kh->ident[0] = KGZ_ID0;
+ kh->ident[1] = KGZ_ID1;
+ kh->ident[2] = KGZ_ID2;
+ kh->ident[3] = KGZ_ID3;
+ xseek(&ido, sizeof(hdr) + sizeof(*kh));
+ mk_data(&idi, &ido, kh, sizeof(hdr) + sizeof(*kh));
+ kh->dload &= 0xffffff;
+ kh->entry &= 0xffffff;
+ /* Symbol table */
+ var_names[0].n_value = 0; /* At start of text segment */
+ var_names[1].n_value = sizeof(*kh); /* Offset of gzipped data */
+ xwrite (&ido, &var_names, sizeof(var_names));
+ /* String table */
+ len = sizeof(string_names) + sizeof(len);
+ xwrite(&ido, &len, sizeof(len));
+ xwrite(&ido, string_names, sizeof(string_names));
+ /* Go back and write header */
+ xseek(&ido, 0);
+ memset(&hdr, 0, sizeof(hdr));
+ hdr.a_magic = OMAGIC;
+ hdr.a_text = kh->nsize + sizeof(*kh);
+ hdr.a_syms = sizeof(var_names);
+ xwrite(&ido, &hdr, sizeof(hdr));
+ xwrite(&ido, kh, sizeof(*kh));
+ xclose(&ido);
+ xclose(&idi);
+}
+
/*
* Make encoded (compressed) data.
*/
static void
mk_data(const struct iodesc * idi, const struct iodesc * ido,
- struct kgz_hdr * kh)
+ struct kgz_hdr * kh, size_t hdr_off)
{
union {
struct exec ex;
@@ -143,7 +188,7 @@
errx(1, "%s: Invalid format", idi->fname);
if (fstat(ido->fd, &sb))
err(1, "%s", ido->fname);
- kh->nsize = sb.st_size - KGZOFF;
+ kh->nsize = sb.st_size - hdr_off;
}
/*
diff -u -r /usr/src/usr.sbin/kgzip/kgzip.8 kgzip/kgzip.8
--- /usr/src/usr.sbin/kgzip/kgzip.8 Thu Aug 3 12:57:02 2000
+++ kgzip/kgzip.8 Thu Oct 26 20:08:31 2000
@@ -32,7 +32,7 @@
.Nd compress a kernel
.Sh SYNOPSIS
.Nm kgzip
-.Op Fl cv
+.Op Fl acv
.Op Fl l Ar loader
.Op Fl o Ar output
.Ar file
@@ -58,7 +58,8 @@
.El
.Pp
Supported input formats are ELF and a.out ZMAGIC; the output format
-is always ELF. Only 32-bit objects are supported.
+is ELF by default, a.out can be produced.
+Only 32-bit objects are supported.
.Pp
If the
.Ar file
@@ -69,6 +70,13 @@
.Pp
The options are:
.Bl -tag -width Fl
+.It Fl a
+Produce a.out output instead of ELF.
+Note,
+you will need an to specify an a.out version of the loader
+and
+have the a.out linker installed
+for this to be successful.
.It Fl c
Omit the link phase.
.It Fl v
diff -u -r /usr/src/usr.sbin/kgzip/kgzip.c kgzip/kgzip.c
--- /usr/src/usr.sbin/kgzip/kgzip.c Thu Aug 3 12:57:02 2000
+++ kgzip/kgzip.c Thu Oct 26 19:55:22 2000
@@ -64,7 +64,7 @@
static char *fn[FN_CNT];
struct kgz_hdr kh;
const char *output;
- int cflag, vflag, c;
+ int aflag, cflag, vflag, c;
if (getenv("TMPDIR") == NULL)
tname = strdup("/tmp/kgzXXXXXXXXXX");
@@ -73,9 +73,12 @@
errx(1, "Out of memory");
output = NULL;
- cflag = vflag = 0;
- while ((c = getopt(argc, argv, "cvl:o:")) != -1)
+ aflag = cflag = vflag = 0;
+ while ((c = getopt(argc, argv, "acvl:o:")) != -1)
switch (c) {
+ case 'a':
+ aflag = 1;
+ break;
case 'c':
cflag = 1;
break;
@@ -98,10 +101,14 @@
atexit(cleanup);
mk_fn(cflag, *argv, output, fn);
memset(&kh, 0, sizeof(kh));
- if (fn[FN_SRC])
- kgzcmp(&kh, fn[FN_SRC], fn[FN_OBJ]);
+ if (fn[FN_SRC]) {
+ if(aflag)
+ aoutkgzcmp(&kh, fn[FN_SRC], fn[FN_OBJ]);
+ else
+ kgzcmp(&kh, fn[FN_SRC], fn[FN_OBJ]);
+ }
if (!cflag)
- kgzld(&kh, fn[FN_OBJ], fn[FN_KGZ]);
+ kgzld(&kh, fn[FN_OBJ], fn[FN_KGZ], aflag);
if (vflag)
printf("dload=%#x dsize=%#x isize=%#x entry=%#x nsize=%#x\n",
kh.dload, kh.dsize, kh.isize, kh.entry, kh.nsize);
@@ -159,6 +166,6 @@
usage(void)
{
fprintf(stderr,
- "usage: kgzip [-cv] [-l file] [-o filename] file\n");
+ "usage: kgzip [-acv] [-l file] [-o filename] file\n");
exit(1);
}
diff -u -r /usr/src/usr.sbin/kgzip/kgzip.h kgzip/kgzip.h
--- /usr/src/usr.sbin/kgzip/kgzip.h Thu Aug 3 12:57:02 2000
+++ kgzip/kgzip.h Fri Aug 4 21:38:22 2000
@@ -37,7 +37,8 @@
extern const char *loader; /* Default loader */
void kgzcmp(struct kgz_hdr *, const char *, const char *);
-void kgzld(struct kgz_hdr *, const char *, const char *);
+void aoutkgzcmp(struct kgz_hdr *, const char *, const char *);
+void kgzld(struct kgz_hdr *, const char *, const char *,int);
void xclose(const struct iodesc *);
void xcopy(const struct iodesc *, const struct iodesc *, size_t, off_t);
diff -u -r /usr/src/usr.sbin/kgzip/kgzld.c kgzip/kgzld.c
--- /usr/src/usr.sbin/kgzip/kgzld.c Thu Aug 3 12:57:02 2000
+++ kgzip/kgzld.c Fri Aug 4 21:43:34 2000
@@ -47,7 +47,7 @@
* Link KGZ file and loader.
*/
void
-kgzld(struct kgz_hdr * kh, const char *f1, const char *f2)
+kgzld(struct kgz_hdr * kh, const char *f1, const char *f2,int aout)
{
char addr[16];
struct iodesc idi;
@@ -68,7 +68,10 @@
case -1:
err(1, NULL);
case 0:
- execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, NULL);
+ if(aout)
+ execlp("ld", "ld", "-aout", "-Bstatic", "-Z", "-T", addr, "-o", f2, loader, f1, NULL);
+ else
+ execlp("ld", "ld", "-Ttext", addr, "-o", f2, loader, f1, NULL);
warn(NULL);
_exit(1);
default:
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David Malone wrote: > We've been using this patch to kgzip to produce a.out gzipped ELF > kernels. This is very useful, as it means we don't have to reburn > about 40 EPROMS that only know how to load a.out images. It is > based on the code in kzip, which could be completly obsolete if > kgzip had this patch. > > Naturally, it requires a.out version of kgzldr.o and the a.out > linker. I've included a uuencoded copy of the loader we've been > using (it's just the regular kgzldr with underscores added in the > necesary places). Maybe this could be added to the a.out compatability > libs? Just wanted to acknowledge receipt of this. It seems a reasonable idea, but I haven't finished looking at it. That should be sometime later in the week. -- Robert Nordier rnordier@nordier.com rnordier@FreeBSD.org On Thu, 26 Oct 2000 10:39:26 +0200, Poul-Henning Kamp wrote:
> kill it.
Okay, kzip is no more in HEAD and will disappear from RELENG_4 shortly
after 4.2-RELEASE.
Ciao,
Sheldon.
David Malone wrote: > We've been using this patch to kgzip to produce a.out gzipped ELF > kernels. This is very useful, as it means we don't have to reburn > about 40 EPROMS that only know how to load a.out images. It is > based on the code in kzip, which could be completly obsolete if > kgzip had this patch. > > Naturally, it requires a.out version of kgzldr.o and the a.out > linker. I've included a uuencoded copy of the loader we've been > using (it's just the regular kgzldr with underscores added in the > necesary places). Maybe this could be added to the a.out compatability > libs? I've committed changes to kgzip and kgzldr which add a.out support. As you mentioned that the supplied patch was based on kzip, I thought it best just to write the new code from scratch rather than have to address potential copyright issues (adding Linus' name to kgzip for a few lines of code seemed a bit over the top). However, I added in at least one better idea of yours (dispensing with KGZOFF) when I went over the patch afterwards. For kgzldr, there's an m4 function which uses ${OBJFORMAT} to decide whether external identifiers get an underscore, so one can make make OBJFORMAT=aout to get dual versions of kgzldr.o. I haven't done anything about adding kgzldr.o to the compatibility libs: please go ahead with that yourself, if you think it should be done. Robert -- Robert Nordier rnordier@nordier.com rnordier@FreeBSD.org > As you mentioned that the supplied patch was based on kzip, I > thought it best just to write the new code from scratch rather than > have to address potential copyright issues (adding Linus' name to > kgzip for a few lines of code seemed a bit over the top). The kzip I based it on was by phk, so there shouldn't have been a huge problem ;-) > However, > I added in at least one better idea of yours (dispensing with > KGZOFF) when I went over the patch afterwards. Yep - that stuff was a bit icky. Most of the patch was thrown together late one evening; we were our diskless xterms to boot after upgrading to 4.1. David. David Malone wrote: > > As you mentioned that the supplied patch was based on kzip, I > > thought it best just to write the new code from scratch rather than > > have to address potential copyright issues (adding Linus' name to > > kgzip for a few lines of code seemed a bit over the top). > > The kzip I based it on was by phk, so there shouldn't have been > a huge problem ;-) I thought I saw the Torvalds name in there somewhere, but I was probably being over-scrupulous. > > However, > > I added in at least one better idea of yours (dispensing with > > KGZOFF) when I went over the patch afterwards. > > Yep - that stuff was a bit icky. Most of the patch was thrown together > late one evening; we were our diskless xterms to boot after upgrading > to 4.1. Well, thanks for the stuff; I'm glad it's in now, anyway. Robert -- Robert Nordier rnordier@nordier.com rnordier@FreeBSD.org State Changed From-To: open->closed I forgot to close this one after Robert committed the patches. |
