Date: Mon, 26 Jun 1995 08:48:59 +0200 (MET DST) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-current@FreeBSD.org (FreeBSD-current users) Subject: Re: kern/562: netscape (bsdi executable) can't do a uname (fix provided) Message-ID: <199506260648.IAA22112@uriah.heep.sax.de> In-Reply-To: <199506251830.LAA00912@freefall.cdrom.com> from "peter@haywire.dialix.com" at Jun 25, 95 11:30:01 am
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Can any brave soul who's actually got Netscape 1.1 try this?
As peter@haywire.dialix.com wrote:
>
>
> >Number: 562
> >Category: kern
> >Synopsis: netscape (bsdi executable) can't do a uname (fix provided)
> >Confidential: no
> >Severity: non-critical
> >Priority: low
> >Responsible: freebsd-bugs (FreeBSD bugs mailing list)
> >State: open
> >Class: change-request
> >Submitter-Id: current-users
> >Arrival-Date: Sun Jun 25 11:30:00 1995
> >Originator: Peter Wemm
> >Organization:
> DIALix Services
> >Release: FreeBSD 2.0-BUILT-19950625 i386
> >Environment:
>
> FreeBSD-current
> FreeBSD jhome.DIALix.COM 2.0-BUILT-19950625 FreeBSD 2.0-BUILT-19950625 #4: Sun Jun 25 22:05:25 WST 1995 pwroot@jhome.DIALix.COM:/usr/src/sys/compile/JHOME i386
>
> >Description:
>
> Netscape 1.1N does a uname() at startup to discover the Host OS type.
> This information is presented to every server that it connects to, and
> is probably logged for statistics, at least on home.netscape.com.
>
> The problem is, that it identifies itself as (while running on FreeBSD) as
> something like this:
>
> GET / HTTP/1.0
> User-Agent: Mozilla/1.1N (X11; I; BSD/386 uname failed)
> Accept: */*
> Accept: image/gif
> Accept: image/x-xbitmap
> Accept: image/jpeg
>
> This does not do much to help convince Netscape to support FreeBSD in the
> future.... :-)
>
> After applying this patch, it identifies itself like this: (Thanks to
> Gary Palmer for the idea on how to see this info)
>
> GET / HTTP/1.0
> User-Agent: Mozilla/1.1N (X11; I; FreeBSD 2.0-BUILT-1995060 i386)
> Accept: */*
> Accept: image/gif
> Accept: image/x-xbitmap
> Accept: image/jpeg
>
> (BTW: FreeBSD-current is still "2.0-built-nnnnn"????)
>
> Also, when starting up netscape, there is a very annoying printf
> "uname() failed; can't tell what system we're running on"
>
> >How-To-Repeat:
>
> Run netscape...
>
> >Fix:
>
> Apply this patch to /usr/src/sys/kern/kern_sysctl.c and make sure
> COMPAT_43 is defined (netscape is a 4.3BSD-net2 binary, so it should
> have COMPAT_43 defined anyway)
>
> Apologies for the ugly code here..
>
> -Peter
>
> *** kern_sysctl-dist.c Tue May 30 18:58:22 1995
> --- kern_sysctl.c Mon Jun 26 02:01:21 1995
> ***************
> *** 767,772 ****
> --- 767,818 ----
> #define KINFO_LOADAVG (5<<8)
> #define KINFO_CLOCKRATE (6<<8)
>
> + /* Non-standard BSDI extension - only present on their 4.3 net-2 releases */
> + #define KINFO_BSDI_SYSINFO (101<<8)
> +
> + /*
> + * XXX this is bloat, but I hope it's better here than on the potentially
> + * limited kernel stack... -Peter
> + */
> +
> + struct {
> + char *bsdi_machine; /* "i386" on BSD/386 */
> + char *pad0;
> + long pad1;
> + long pad2;
> + long pad3;
> + u_long pad4;
> + u_long pad5;
> + u_long pad6;
> +
> + char *bsdi_ostype; /* "BSD/386" on BSD/386 */
> + char *bsdi_osrelease; /* "1.1" on BSD/386 */
> + long pad7;
> + long pad8;
> + char *pad9;
> +
> + long pad10;
> + long pad11;
> + int pad12;
> + long pad13;
> + quad_t pad14;
> + long pad15;
> +
> + struct timeval pad16;
> + /* we dont set this, because BSDI's uname used gethostname() instead */
> + char *bsdi_hostname; /* hostname on BSD/386 */
> +
> + /* the actual string data is appended here */
> +
> + } bsdi_si;
> + /*
> + * this data is appended to the end of the bsdi_si structure during copyout.
> + * The "char *" offsets are relative to the base of the bsdi_si struct.
> + * This contains "FreeBSD\02.0-BUILT-nnnnnn\0i386\0", and these strings
> + * should not exceed the length of the buffer here... (or else!! :-)
> + */
> + char bsdi_strings[80]; /* It had better be less than this! */
> +
> struct getkerninfo_args {
> int op;
> char *where;
> ***************
> *** 829,834 ****
> --- 875,937 ----
> name[0] = KERN_CLOCKRATE;
> error = kern_sysctl(name, 1, uap->where, &size, NULL, 0, p);
> break;
> +
> + case KINFO_BSDI_SYSINFO: {
> + /*
> + * this is pretty crude, but it's just enough for uname()
> + * from BSDI's 1.x libc to work.
> + */
> +
> + u_int needed;
> + u_int left;
> + char *s;
> +
> + bzero((char *)&bsdi_si, sizeof(bsdi_si));
> + bzero(bsdi_strings, sizeof(bsdi_strings));
> +
> + s = bsdi_strings;
> +
> + bsdi_si.bsdi_ostype = ((char *)(s - bsdi_strings)) + sizeof(bsdi_si);
> + strcpy(s, ostype);
> + s += strlen(s) + 1;
> +
> + bsdi_si.bsdi_osrelease = ((char *)(s - bsdi_strings)) + sizeof(bsdi_si);
> + strcpy(s, osrelease);
> + s += strlen(s) + 1;
> +
> + bsdi_si.bsdi_machine = ((char *)(s - bsdi_strings)) + sizeof(bsdi_si);
> + strcpy(s, machine);
> + s += strlen(s) + 1;
> +
> + needed = sizeof(bsdi_si) + (s - bsdi_strings);
> +
> + if (uap->where == NULL) {
> + /* process is asking how much buffer to supply.. */
> + size = needed;
> + error = 0;
> + break;
> + }
> +
> + /* if too much buffer supplied, trim it down */
> + if (size > needed)
> + size = needed;
> +
> + /* how much of the buffer is remaining */
> + left = size;
> +
> + if ((error = copyout((char *)&bsdi_si, uap->where, left)) != 0)
> + break;
> +
> + /* is there any point in continuing? */
> + if (left > sizeof(bsdi_si))
> + left -= sizeof(bsdi_si);
> + else
> + break;
> +
> + error = copyout(&bsdi_strings, uap->where + sizeof(bsdi_si),
> + left);
> + break;
> + }
>
> default:
> return (EOPNOTSUPP);
> >Audit-Trail:
> >Unformatted:
>
>
>
--
cheers, J"org
joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/
Never trust an operating system you don't have sources for. ;-)
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