c460ac3a00
systems where the data/stack/etc limits are too big for a 32 bit process. Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c. Supply an ia32_fixlimits function. Export the clip/default values to sysctl under the compat.ia32 heirarchy. Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max value rather than the sysctl tweakable variable. This allows mmap to place mappings at sensible locations when limits have been reduced. Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same method as mmap(0, ...) now does. Note that we cannot remove all references to the sysctl tweakable maxdsiz etc variables because /etc/login.conf specifies a datasize of 'unlimited'. And that causes exec etc to fail since it can no longer find space to mmap things.
149 lines
4.8 KiB
C
149 lines
4.8 KiB
C
/*-
|
|
* Copyright (c) 1998-1999 Andrew Gallatin
|
|
* All rights reserved.
|
|
*
|
|
* Based heavily on linux_sysvec.c
|
|
* Which is Copyright (c) 1994-1996 Søren Schmidt
|
|
*
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
/* XXX we use functions that might not exist. */
|
|
#include "opt_compat.h"
|
|
|
|
#ifndef COMPAT_43
|
|
#error "Unable to compile Osf1-emulator due to missing COMPAT_43 option!"
|
|
#endif
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/sysent.h>
|
|
#include <sys/imgact.h>
|
|
#include <sys/imgact_aout.h>
|
|
#include <sys/imgact_elf.h>
|
|
#include <sys/malloc.h>
|
|
#include <alpha/osf1/exec_ecoff.h>
|
|
#include <alpha/osf1/osf1_signal.h>
|
|
#include <alpha/osf1/osf1_syscall.h>
|
|
#include <alpha/osf1/osf1_util.h>
|
|
#include <alpha/osf1/osf1.h>
|
|
|
|
MODULE_VERSION(osf1, 1);
|
|
MODULE_DEPEND(osf1, sysvmsg, 1, 1, 1);
|
|
MODULE_DEPEND(osf1, sysvsem, 1, 1, 1);
|
|
MODULE_DEPEND(osf1, sysvshm, 1, 1, 1);
|
|
|
|
int osf1_szsigcode;
|
|
extern char sigcode[];
|
|
static int osf1_freebsd_fixup(long **stack_base, struct image_params *imgp);
|
|
|
|
struct sysentvec osf1_sysvec = {
|
|
OSF1_SYS_MAXSYSCALL,
|
|
osf1_sysent,
|
|
0,
|
|
0,
|
|
NULL,
|
|
0,
|
|
NULL,
|
|
NULL, /* trap-to-signal translation function */
|
|
osf1_freebsd_fixup, /* fixup */
|
|
osf1_sendsig,
|
|
sigcode, /* use generic trampoline */
|
|
&osf1_szsigcode, /* use generic trampoline size */
|
|
NULL, /* prepsyscall */
|
|
"OSF/1 ECOFF",
|
|
NULL, /* we don't have an ECOFF coredump function */
|
|
NULL,
|
|
OSF1_MINSIGSTKSZ,
|
|
PAGE_SIZE,
|
|
VM_MIN_ADDRESS,
|
|
VM_MAXUSER_ADDRESS,
|
|
USRSTACK,
|
|
PS_STRINGS,
|
|
VM_PROT_ALL,
|
|
exec_copyout_strings,
|
|
exec_setregs,
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* Do some magic to setup the stack properly for the osf1 dynamic loader
|
|
* OSF/1 binaries need an auxargs vector describing the name of the
|
|
* executable (must be a full path).
|
|
*
|
|
* If we're executing a dynamic binary, the loader will expect its
|
|
* name, /sbin/loader, to be in the auxargs vectore as well.
|
|
* Bear in mind that when we execute a dynamic binary, we begin by
|
|
* executing the loader. The loader then takes care of mapping
|
|
* executable (which is why it needs the full path)
|
|
* and its requisite shared libs, then it transfers control
|
|
* to the executable after calling set_program_attributes().
|
|
*/
|
|
|
|
#define AUXARGS_ENTRY(pos, id, val) {suword(pos++, id); suword(pos++, val);}
|
|
|
|
static int
|
|
osf1_freebsd_fixup(long **stack_base, struct image_params *imgp)
|
|
{
|
|
char *destp;
|
|
int sz;
|
|
long *pos;
|
|
struct ps_strings *arginfo;
|
|
Osf_Auxargs *args;
|
|
|
|
args = (Osf_Auxargs *)imgp->auxargs;
|
|
pos = *stack_base + (imgp->argc + imgp->envc + 2);
|
|
|
|
arginfo = (struct ps_strings *)PS_STRINGS;
|
|
|
|
sz = *(imgp->proc->p_sysent->sv_szsigcode);
|
|
destp = (caddr_t)arginfo - szsigcode - SPARE_USRSPACE -
|
|
roundup((ARG_MAX - imgp->stringspace), sizeof(char *));
|
|
|
|
destp -= imgp->stringspace;
|
|
|
|
destp -= strlen(args->executable)+2;
|
|
copyout(args->executable, destp, strlen(args->executable)+1);
|
|
|
|
AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
|
|
if (args->loader) {
|
|
/* the loader seems to want the name here, then it overwrites it with
|
|
the FD of the executable. I have NFC what's going on here.. */
|
|
AUXARGS_ENTRY(pos, OSF1_EXEC_NAME, (long)destp);
|
|
destp-= (strlen("/sbin/loader")+1);
|
|
copyout("/sbin/loader", destp, strlen("/sbin/loader")+1);
|
|
AUXARGS_ENTRY(pos, OSF1_LOADER_NAME, (long)destp);
|
|
AUXARGS_ENTRY(pos, OSF1_LOADER_FLAGS, 0);
|
|
}
|
|
free(imgp->auxargs, M_TEMP);
|
|
imgp->auxargs = NULL;
|
|
(*stack_base)--;
|
|
**stack_base = (long)imgp->argc;
|
|
return 0;
|
|
}
|