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freebsd-dev/sys/i386/ibcs2/ibcs2_util.h

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Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
/*
* Copyright (c) 1994 Christos Zoulas
* Copyright (c) 1995 Frank van der Linden
* Copyright (c) 1995 Scott Bartram
* 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.
* 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.
*
* from: svr4_util.h,v 1.5 1994/11/18 02:54:31 christos Exp
* from: linux_util.h,v 1.2 1995/03/05 23:23:50 fvdl Exp
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
*
* $FreeBSD$
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
*/
/*
* This file is pretty much the same as Christos' svr4_util.h
* (for now).
*/
#ifndef _IBCS2_UTIL_H_
#define _IBCS2_UTIL_H_
Added an XXX comment.
1997-08-25 22:02:22 +00:00
/*
* XXX the inlines have obnoxious prerequisites, only some of which are
* included here.
*/
Remove old files no longer needed. Add new files created for emulator. Modify NetBSD import to work with FreeBSD and add new features and code. The complete emulator is essentially a combination of work/code implemented by Sean Eric Fagan, Soren Schmidt, Scott Bartram, and myself, Steven Wallace. Features of this new emulator system include: o "clean" code, including strict prototyping. o Auto-generation of ibcs2 system calls, xenix system calls, isc system calls. Generation includes system tables, structure definitions, and prototyping of function calls. o ibcs2 emulator does not rely on any COMPAT_43 system calls. o embedded socksys support o ibcs2 msgsys, semsys, shmsys calls supported if supported in kernel o alternate /emul/ibcs2 namespace searched first for files in ibcs2 system. Usefull to keep sysv libraries, binaries in /emul/ibcs2. o many other finer details and functions fixed or implemented.
1995-10-10 07:59:30 +00:00
#include <vm/vm.h>
Untangled the vm.h include file spaghetti.
1995-12-07 12:48:31 +00:00
#include <vm/pmap.h>
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
#include <machine/vmparam.h>
#include <sys/exec.h>
Mega-commit for Linux emulator update.. This has been stress tested under netscape-2.0 for Linux running all the Java stuff. The scrollbars are now working, at least on my machine. (whew! :-) I'm uncomfortable with the size of this commit, but it's too inter-dependant to easily seperate out. The main changes: COMPAT_LINUX is *GONE*. Most of the code has been moved out of the i386 machine dependent section into the linux emulator itself. The int 0x80 syscall code was almost identical to the lcall 7,0 code and a minor tweak allows them to both be used with the same C code. All kernels can now just modload the lkm and it'll DTRT without having to rebuild the kernel first. Like IBCS2, you can statically compile it in with "options LINUX". A pile of new syscalls implemented, including getdents(), llseek(), readv(), writev(), msync(), personality(). The Linux-ELF libraries want to use some of these. linux_select() now obeys Linux semantics, ie: returns the time remaining of the timeout value rather than leaving it the original value. Quite a few bugs removed, including incorrect arguments being used in syscalls.. eg: mixups between passing the sigset as an int, vs passing it as a pointer and doing a copyin(), missing return values, unhandled cases, SIOC* ioctls, etc. The build for the code has changed. i386/conf/files now knows how to build linux_genassym and generate linux_assym.h on the fly. Supporting changes elsewhere in the kernel: The user-mode signal trampoline has moved from the U area to immediately below the top of the stack (below PS_STRINGS). This allows the different binary emulations to have their own signal trampoline code (which gets rid of the hardwired syscall 103 (sigreturn on BSD, syslog on Linux)) and so that the emulator can provide the exact "struct sigcontext *" argument to the program's signal handlers. The sigstack's "ss_flags" now uses SS_DISABLE and SS_ONSTACK flags, which have the same values as the re-used SA_DISABLE and SA_ONSTACK which are intended for sigaction only. This enables the support of a SA_RESETHAND flag to sigaction to implement the gross SYSV and Linux SA_ONESHOT signal semantics where the signal handler is reset when it's triggered. makesyscalls.sh no longer appends the struct sysentvec on the end of the generated init_sysent.c code. It's a lot saner to have it in a seperate file rather than trying to update the structure inside the awk script. :-) At exec time, the dozen bytes or so of signal trampoline code are copied to the top of the user's stack, rather than obtaining the trampoline code the old way by getting a clone of the parent's user area. This allows Linux and native binaries to freely exec each other without getting trampolines mixed up.
1996-03-02 19:38:20 +00:00
#include <sys/sysent.h>
#include <sys/proc.h>
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
Remove old files no longer needed. Add new files created for emulator. Modify NetBSD import to work with FreeBSD and add new features and code. The complete emulator is essentially a combination of work/code implemented by Sean Eric Fagan, Soren Schmidt, Scott Bartram, and myself, Steven Wallace. Features of this new emulator system include: o "clean" code, including strict prototyping. o Auto-generation of ibcs2 system calls, xenix system calls, isc system calls. Generation includes system tables, structure definitions, and prototyping of function calls. o ibcs2 emulator does not rely on any COMPAT_43 system calls. o embedded socksys support o ibcs2 msgsys, semsys, shmsys calls supported if supported in kernel o alternate /emul/ibcs2 namespace searched first for files in ibcs2 system. Usefull to keep sysv libraries, binaries in /emul/ibcs2. o many other finer details and functions fixed or implemented.
1995-10-10 07:59:30 +00:00
static __inline caddr_t stackgap_init(void);
static __inline void *stackgap_alloc(caddr_t *, size_t);
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
static __inline caddr_t
stackgap_init()
{
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
#define szsigcode (*(curthread->td_proc->p_sysent->sv_szsigcode))
Removed the cast to a pointer in the definition of PS_STRINGS and adjusted related casts to match (only in the kernel in this commit). The pointer was only wanted in one place in kern_exec.c. Applications should use the kern.ps_strings sysctl instead of PS_STRINGS, so they shouldn't notice this change.
1998-12-16 16:28:58 +00:00
return (caddr_t)(PS_STRINGS - szsigcode - SPARE_USRSPACE);
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
}
static __inline void *
stackgap_alloc(sgp, sz)
caddr_t *sgp;
size_t sz;
{
void *p = (void *) *sgp;
Fix a multitude of security bugs in the iBCS2 emulator: - Return NULL instead of returning memory outside of the stackgap in stackgap_alloc() (FreeBSD-SA-00:42.linux) - Check for stackgap_alloc() returning NULL in ibcs2_emul_find(); other calls to stackgap_alloc() have not been changed since they are small fixed-size allocations. - Replace use of strcpy() with strlcpy() in exec_coff_imgact() to avoid buffer overflow - Use strlcat() instead of strcat() to avoid a one byte buffer overflow in ibcs2_setipdomainname() - Use copyinstr() instead of copyin() in ibcs2_setipdomainname() to ensure that the string is null-terminated - Avoid integer overflow in ibcs2_setgroups() and ibcs2_setgroups() by checking that gidsetsize argument is non-negative and no larger than NGROUPS_MAX. - Range-check signal numbers in ibcs2_wait(), ibcs2_sigaction(), ibcs2_sigsys() and ibcs2_kill() to avoid accessing array past the end (or before the start)
2003-10-12 04:25:26 +00:00
sz = ALIGN(sz);
if (*sgp + sz > (caddr_t)(PS_STRINGS - szsigcode))
return NULL;
*sgp += sz;
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
return p;
}
#ifdef DEBUG_IBCS2
#define DPRINTF(a) printf a;
#else
#define DPRINTF(a)
#endif
extern const char ibcs2_emul_path[];
Remove __P.
2002-03-20 05:48:58 +00:00
int ibcs2_emul_find(struct thread *, caddr_t *, const char *, char *,
char **, int);
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
#define CHECKALTEXIST(p, sgp, path) \
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 0)
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
#define CHECKALTCREAT(p, sgp, path) \
KSE Milestone 2 Note ALL MODULES MUST BE RECOMPILED make the kernel aware that there are smaller units of scheduling than the process. (but only allow one thread per process at this time). This is functionally equivalent to teh previousl -current except that there is a thread associated with each process. Sorry john! (your next MFC will be a doosie!) Reviewed by: peter@freebsd.org, dillon@freebsd.org X-MFC after: ha ha ha ha
2001-09-12 08:38:13 +00:00
ibcs2_emul_find(td, sgp, ibcs2_emul_path, path, &(path), 1)
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
Added a missing prototype.
1996-12-18 19:14:35 +00:00
#ifdef SPX_HACK
Remove __P.
2002-03-20 05:48:58 +00:00
int spx_open(struct thread *td, void *uap);
Added a missing prototype.
1996-12-18 19:14:35 +00:00
#endif
Import of original NetBSD's ibcs2 emulator sources by Scott Bartram, which is used as a basis for a more complete and cleaner ibcs2 emulator. (snapshot about May 1995 with a few files from September 1995) Some files and code from old emulator still remains. New files, features, and changes have been implemented by myself, which will be shown in following commits.
1995-10-10 07:27:24 +00:00
#endif /* !_IBCS2_UTIL_H_ */
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