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NetBSD/sys/compat/svr4/svr4_exec.c

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Merge wrstuden-revivesa into HEAD.
2008-10-15 10:51:17 +04:00
/* $NetBSD: svr4_exec.c,v 1.63 2008/10/15 06:51:20 wrstuden Exp $ */
New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD'
1994-06-29 10:29:24 +04:00
Assign copyrights to TNF; tv has copyrights on the remaining files... It would be nice if he changed them (hint, hint)
1998-09-04 23:54:37 +04:00
/*-
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
* Copyright (c) 1994, 2000 The NetBSD Foundation, Inc.
prelim svr4 stuff from <christos@deshaw.com>
1994-05-22 14:04:26 +04:00
* All rights reserved.
*
Assign copyrights to TNF; tv has copyrights on the remaining files... It would be nice if he changed them (hint, hint)
1998-09-04 23:54:37 +04:00
* This code is derived from software contributed to The NetBSD Foundation
* by Christos Zoulas.
*
prelim svr4 stuff from <christos@deshaw.com>
1994-05-22 14:04:26 +04:00
* 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.
*
Assign copyrights to TNF; tv has copyrights on the remaining files... It would be nice if he changed them (hint, hint)
1998-09-04 23:54:37 +04:00
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``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 FOUNDATION OR CONTRIBUTORS
* 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.
prelim svr4 stuff from <christos@deshaw.com>
1994-05-22 14:04:26 +04:00
*/
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
#include <sys/cdefs.h>
Merge wrstuden-revivesa into HEAD.
2008-10-15 10:51:17 +04:00
__KERNEL_RCSID(0, "$NetBSD: svr4_exec.c,v 1.63 2008/10/15 06:51:20 wrstuden Exp $");
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#if defined(_KERNEL_OPT)
#include "opt_syscall_debug.h"
#endif
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
prelim svr4 stuff from <christos@deshaw.com>
1994-05-22 14:04:26 +04:00
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses. * For sparc64 and amd64, define *SIZ32 VM constants. * Add a new function pointer to struct emul, pointing at a function that will return the default VM map address. The default function is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS macro. This gives emulations control over the default map address, and allows things to be mapped at the right address (in 32bit range) for COMPAT_NETBSD32. * Add code to adjust the data and stack limits when a COMPAT_NETBSD32 or COMPAT_SVR4_32 binary is executed. * Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr instead (emulations might have set it differently) * Since this changes struct emul, bump kernel version to 3.99.2 Tested on amd64, compile-tested on sparc64.
2005-03-26 08:12:34 +03:00
#include <uvm/uvm_extern.h>
Oops; missed a critical #include.
2000-12-09 09:25:03 +03:00
#include <machine/svr4_machdep.h>
Include the right headers to find svr4_sendsig.
1999-01-22 02:16:43 +03:00
#include <compat/svr4/svr4_types.h>
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
#include <compat/svr4/svr4_syscall.h>
add missing include that defined native_to_svr4_errno
1998-10-23 23:36:03 +04:00
#include <compat/svr4/svr4_errno.h>
Include the right headers to find svr4_sendsig.
1999-01-22 02:16:43 +03:00
#include <compat/svr4/svr4_signal.h>
Make the setregs hook emulation-specific, rather than executable format specific. Struct emul has a e_setregs hook back, which points to emulation-specific setregs function. es_setregs of struct execsw now only points to optional executable-specific setup function (this is only used for ECOFF).
2001-09-18 23:36:32 +04:00
#include <compat/svr4/svr4_exec.h>
prelim svr4 stuff from <christos@deshaw.com>
1994-05-22 14:04:26 +04:00
Use compat_util.[ch]
1995-06-25 00:29:17 +04:00
extern char svr4_sigcode[], svr4_esigcode[];
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
extern struct sysent svr4_sysent[];
change the type of *syscallnames[] array to 'const char * const foo[]'
2000-11-14 00:32:15 +03:00
extern const char * const svr4_syscallnames[];
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
#ifndef __HAVE_SYSCALL_INTERN
Remove all the __P
2007-12-04 21:40:07 +03:00
void syscall(void);
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
#endif
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
add support for non-executable mappings (where the hardware allows this) and make the stack and heap non-executable by default. the changes fall into two basic catagories: - pmap and trap-handler changes. these are all MD: = alpha: we already track per-page execute permission with the (software) PG_EXEC bit, so just have the trap handler pay attention to it. = i386: use a new GDT segment for %cs for processes that have no executable mappings above a certain threshold (currently the bottom of the stack). track per-page execute permission with the last unused PTE bit. = powerpc/ibm4xx: just use the hardware exec bit. = powerpc/oea: we already track per-page exec bits, but the hardware only implements non-exec mappings at the segment level. so track the number of executable mappings in each segment and turn on the no-exec segment bit iff the count is 0. adjust the trap handler to deal. = sparc (sun4m): fix our use of the hardware protection bits. fix the trap handler to recognize text faults. = sparc64: split the existing unified TSB into data and instruction TSBs, and only load TTEs into the appropriate TSB(s) for the permissions. fix the trap handler to check for execute permission. = not yet implemented: amd64, hppa, sh5 - changes in all the emulations that put a signal trampoline on the stack. instead, we now put the trampoline into a uvm_aobj and map that into the process separately. originally from openbsd, adapted for netbsd by me.
2003-08-24 21:52:28 +04:00
struct uvm_object *emul_svr4_object;
restructure struct emul and execsw, in preparation to make emulations LKMable: * move all exec-type specific information from struct emul to execsw[] and provide single struct emul per emulation * elf: - kern/exec_elf32.c:probe_funcs[] is gone, execsw[] how has one entry per emulation and contains pointer to respective probe function - interp is allocated via MALLOC() rather than on stack - elf_args structure is allocated via MALLOC() rather than malloc() * ecoff: the per-emulation hooks moved from alpha and mips specific code to OSF1 and Ultrix compat code as appropriate, execsw[] has one entry per emulation supporting ecoff with appropriate probe function * the makecmds/probe functions don't set emulation, pointer to emulation is part of appropriate execsw[] entry * constify couple of structures
2000-11-21 03:37:49 +03:00
const struct emul emul_svr4 = {
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
"svr4",
add e_path (emulation path) to struct emul, which replaces emulation-specific *_emul_path variables change macros CHECK_ALT_{CREAT|EXIST} to use that, 'root' doesn't need to be passed explicitly any more and *_CHECK_ALT_{CREAT|EXIST} are removed change explicit emul_find() calls in probe functions to get the emulation path from the checked exec switch entry's emulation remove no longer needed header files add e_flags and e_syscall to struct emul; these are unsed and empty for now
2000-12-01 15:28:30 +03:00
"/emul/svr4",
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
#ifndef __HAVE_MINIMAL_EMUL
Removed obsoletes EMUL_NO_BSD_ASYNCIO_PIPE and EMUL_NO_SIGIO_ON_READ flags. Async I/O OS specifities should now handled in OS specific code. Linux has been done, but other emulation should be handled. See case LINUX_F_SETFL in sys/compat/linux/common/linux_file.c:linux_sys_fcntl() for more details. The data that has been collected yet: Net Free Open Linux SunOS AIX OSF1 Darwin send SIGIO to write end of pipe Y N N N N N Y Y send SIGIO to read end of pipe Y Y N N N ? Y ? send SIGIO to write end of socket Y Y Y N N Y Y Y send SIGIO to read end of socket Y Y Y Y Y ? Y ?
2001-06-17 02:05:36 +04:00
0,
Rename svr4_error to native_to_svr4_errno.
1998-10-23 08:06:00 +04:00
native_to_svr4_errno,
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
SVR4_SYS_syscall,
set struct emul's nsysent to compat SYS_NSYSENT, not SYS_MAXSYSCALL
2002-11-01 22:26:21 +03:00
SVR4_SYS_NSYSENT,
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
#endif
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
svr4_sysent,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#ifdef SYSCALL_DEBUG
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
svr4_syscallnames,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#else
NULL,
#endif
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
svr4_sendsig,
Add an e_trapsignal member to struct emul, so that emulated processes can send the appropriate signal depending on the trap type.
2001-06-18 06:00:48 +04:00
trapsignal,
Put back Emmanuel's sigfilter hooks, as decided by Core.
2003-12-20 22:01:29 +03:00
NULL,
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
svr4_sigcode,
svr4_esigcode,
add support for non-executable mappings (where the hardware allows this) and make the stack and heap non-executable by default. the changes fall into two basic catagories: - pmap and trap-handler changes. these are all MD: = alpha: we already track per-page execute permission with the (software) PG_EXEC bit, so just have the trap handler pay attention to it. = i386: use a new GDT segment for %cs for processes that have no executable mappings above a certain threshold (currently the bottom of the stack). track per-page execute permission with the last unused PTE bit. = powerpc/ibm4xx: just use the hardware exec bit. = powerpc/oea: we already track per-page exec bits, but the hardware only implements non-exec mappings at the segment level. so track the number of executable mappings in each segment and turn on the no-exec segment bit iff the count is 0. adjust the trap handler to deal. = sparc (sun4m): fix our use of the hardware protection bits. fix the trap handler to recognize text faults. = sparc64: split the existing unified TSB into data and instruction TSBs, and only load TTEs into the appropriate TSB(s) for the permissions. fix the trap handler to check for execute permission. = not yet implemented: amd64, hppa, sh5 - changes in all the emulations that put a signal trampoline on the stack. instead, we now put the trampoline into a uvm_aobj and map that into the process separately. originally from openbsd, adapted for netbsd by me.
2003-08-24 21:52:28 +04:00
&emul_svr4_object,
Make the setregs hook emulation-specific, rather than executable format specific. Struct emul has a e_setregs hook back, which points to emulation-specific setregs function. es_setregs of struct execsw now only points to optional executable-specific setup function (this is only used for ECOFF).
2001-09-18 23:36:32 +04:00
svr4_setregs,
Add hook for a separate svr4_syscall().
2000-12-09 09:20:17 +03:00
NULL,
NULL,
NULL,
Introduce lwp_emuldata and the associated hooks. No hook is provided for the exec case, as the emulation already has the ability to intercept that with the e_proc_exec hook. It is the responsability of the emulation to take appropriaye action about lwp_emuldata in e_proc_exec. Patch reviewed by Christos.
2003-12-20 21:22:16 +03:00
NULL,
NULL,
Introduce 2 new flags in types.h: * __HAVE_SYSCALL_INTERN. If this is defined, e_syscall is replaced by e_syscall_intern, which is called at key places in the kernel. This can be used to set a MD syscall handler pointer. This obsoletes and replaces the *_HAS_SEPARATED_SYSCALL flags. * __HAVE_MINIMAL_EMUL. If this is defined, certain (deprecated) elements in struct emul are omitted.
2000-12-11 08:28:59 +03:00
#ifdef __HAVE_SYSCALL_INTERN
svr4_syscall_intern,
Add hook for a separate svr4_syscall().
2000-12-09 09:20:17 +03:00
#else
always fill in e_syscall in respective emul_*; if the emulation doesn't have it's own separated *_syscall() function, use syscall()
2000-12-09 15:38:23 +03:00
syscall,
Add hook for a separate svr4_syscall().
2000-12-09 09:20:17 +03:00
#endif
- Introduce a e_fault field in struct proc to provide emulation specific memory fault handler. IRIX uses irix_vm_fault, and all other emulation use NULL, which means to use uvm_fault. - While we are there, explicitely set to NULL the uninitialized fields in struct emul: e_fault and e_sysctl on most ports - e_fault is used by the trap handler, for now only on mips. In order to avoid intrusive modifications in UVM, the function pointed by e_fault does not has exactly the same protoype as uvm_fault: int uvm_fault __P((struct vm_map *, vaddr_t, vm_fault_t, vm_prot_t)); int e_fault __P((struct proc *, vaddr_t, vm_fault_t, vm_prot_t)); - In IRIX share groups, all the VM space is shared, except one page. This bounds us to have different VM spaces and synchronize modifications to the VM space accross share group members. We need an IRIX specific hook to the page fault handler in order to propagate VM space modifications caused by page faults.
2002-09-22 01:14:54 +04:00
NULL,
NULL,
Fix some things regarding COMPAT_NETBSD32 and limits/VM addresses. * For sparc64 and amd64, define *SIZ32 VM constants. * Add a new function pointer to struct emul, pointing at a function that will return the default VM map address. The default function is uvm_map_defaultaddr, which just uses the VM_DEFAULT_ADDRESS macro. This gives emulations control over the default map address, and allows things to be mapped at the right address (in 32bit range) for COMPAT_NETBSD32. * Add code to adjust the data and stack limits when a COMPAT_NETBSD32 or COMPAT_SVR4_32 binary is executed. * Don't use USRSTACK in kern_resource.c, use p_vmspace->vm_minsaddr instead (emulations might have set it differently) * Since this changes struct emul, bump kernel version to 3.99.2 Tested on amd64, compile-tested on sparc64.
2005-03-26 08:12:34 +03:00
uvm_default_mapaddr,
add missing initializers
2006-09-03 10:28:16 +04:00
NULL, /* e_usertrap */
Merge wrstuden-revivesa into HEAD.
2008-10-15 10:51:17 +04:00
NULL, /* e_sa */
Merge newlock2 to head.
2007-02-10 00:55:00 +03:00
0, /* e_ucsize */
Introduce a new member to struct emul, e_startlwp, to be used by sys__lwp_create. It allows using the said syscall under COMPAT_NETBSD32. The libpthread regression tests now pass on amd64 and sparc64.
2007-02-19 18:10:02 +03:00
NULL, /* e_startlwp */
- added struct emul to all emulations. - removed all setup functions. - added copyargs() functions where needed.
1995-04-22 23:48:19 +04:00
};