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NetBSD/sys/compat/freebsd/freebsd_exec.c

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many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
/* $NetBSD: freebsd_exec.c,v 1.37 2010/07/07 01:30:32 chs Exp $ */
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
/*
* Copyright (c) 1993, 1994 Christopher G. Demetriou
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Christopher G. Demetriou.
* 4. 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.
*/
add RCSIDs (including regeneration of files as appropriate)
2001-11-13 05:07:52 +03:00
#include <sys/cdefs.h>
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
__KERNEL_RCSID(0, "$NetBSD: freebsd_exec.c,v 1.37 2010/07/07 01:30:32 chs 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
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
#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>
compat code reorg.
2005-09-13 05:42:32 +04:00
#include <compat/sys/signal.h>
#include <compat/sys/signalvar.h>
split aout and elf32 specific code to separate files emul_freebsd: add emul flags EMUL_HAS_SYS___syscall|EMUL_GETPID_PASS_PPID|EMUL_GETID_PASS_EID
2000-12-01 22:13:47 +03:00
#include <compat/freebsd/freebsd_syscall.h>
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
#include <compat/freebsd/freebsd_exec.h>
SA_SIGINFO changes
2003-09-07 02:09:20 +04:00
#include <compat/freebsd/freebsd_signal.h>
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
#include <compat/common/compat_util.h>
PR/6962: Paul Shupak: ELF Freebsd support
1999-02-09 23:17:50 +03:00
compat code reorg.
2005-09-13 05:42:32 +04:00
#include <machine/freebsd_machdep.h>
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
extern struct sysent freebsd_sysent[];
change the type of *syscallnames[] array to 'const char * const foo[]'
2000-11-14 00:32:15 +03:00
extern const char * const freebsd_syscallnames[];
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
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_freebsd_object;
define syscall again.
2005-07-10 08:23:30 +04:00
#ifndef __HAVE_SYSCALL_INTERN
void syscall(void);
#endif
Make the emulations, exec formats, coredump, NFS, and the NFS server into modules. By and large this commit: - shuffles header files and ifdefs - splits code out where necessary to be modular - adds module glue for each of the components - adds/replaces hooks for things that can be installed at runtime
2008-11-19 21:35:57 +03:00
struct emul emul_freebsd = {
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_name = "freebsd",
.e_path = "/emul/freebsd",
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
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_flags = EMUL_HAS_SYS___syscall,
.e_errno = NULL,
.e_nosys = FREEBSD_SYS_syscall,
.e_nsysent = FREEBSD_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
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_sysent = freebsd_sysent,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#ifdef SYSCALL_DEBUG
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_syscallnames = freebsd_syscallnames,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#else
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_syscallnames = NULL,
only include emulation syscallnames with SYSCALL_DEBUG, it's not used otherwise
2004-09-12 14:38:25 +04:00
#endif
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_sendsig = freebsd_sendsig,
.e_trapsignal = trapsignal,
.e_tracesig = NULL,
.e_sigcode = freebsd_sigcode,
.e_esigcode = freebsd_esigcode,
.e_sigobject = &emul_freebsd_object,
.e_setregs = freebsd_setregs,
.e_proc_exec = NULL,
.e_proc_fork = NULL,
.e_proc_exit = NULL,
.e_lwp_fork = NULL,
.e_lwp_exit = 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
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_syscall_intern = freebsd_syscall_intern,
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
#else
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_syscall_intern = syscall,
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
many changes for COMPAT_LINUX: - update the linux syscall table for each platform. - support new-style (NPTL) linux pthreads on all platforms. clone() with CLONE_THREAD uses 1 process with many LWPs instead of separate processes. - move the contents of sys__lwp_setprivate() into a new lwp_setprivate() and use that everywhere. - update linux_release[] and linux32_release[] to "2.6.18". - adjust placement of emul fork/exec/exit hooks as needed and adjust other emul code to match. - convert all struct emul definitions to use named initializers. - change the pid allocator to allow multiple pids to refer to the same proc. - remove a few fields from struct proc that are no longer needed. - disable the non-functional "vdso" code in linux32/amd64, glibc works fine without it. - fix a race in the futex code where we could miss a wakeup after a requeue operation. - redo futex locking to be a little more efficient.
2010-07-07 05:30:32 +04:00
.e_sysctlovly = NULL,
.e_fault = NULL,
.e_vm_default_addr = uvm_default_mapaddr,
.e_usertrap = NULL,
.e_sa = NULL,
.e_ucsize = 0,
.e_startlwp = NULL
FreeBSD binary compatibility module, from Noriyuki Soda.
1995-10-10 04:19:24 +03:00
};