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freebsd/sys/i386/linux/linux_dummy.c

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First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
/*-
* Copyright (c) 1994-1995 S<EFBFBD>ren Schmidt
* 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
* 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 withough 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.
*
$Id$ -> $FreeBSD$
1999-08-28 01:08:13 +00:00
* $FreeBSD$
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/proc.h>
Completed function declarations and added prototypes. Removed some unnecessary #includes. Fixed warnings about nested externs.
1995-11-22 07:43:53 +00:00
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 <i386/linux/linux.h>
#include <i386/linux/linux_proto.h>
First incarnation of our Linux emulator or rather compatibility code. This first shot only incorporaties so much functionality that DOOM can run (the X version), signal handling is VERY weak, so is many other things. But it meets my milestone number one (you guessed it - running DOOM). Uses /compat/linux as prefix for loading shared libs, so it won't conflict with our own libs. Kernel must be compiled with "options COMPAT_LINUX" for this to work.
1995-06-25 17:32:43 +00:00
Major rewrite. The first reason for this rewrite is KNF conformance. The second reason is to avoid redundancy. Each function printed the same string, with only the syscall name being different. The actual printing is now performed by a single function, which gets the syscall name as an argument. The third reason is that of convenience. It's now very easy to add a new dummy implementation. Just add ``DUMMY(foo);'' to the file. It's also a lot easier now to see if a syscall has a dummy implementation or not. The dummies are ordered on syscall number. Please maintain this when adding new dummies (there're 32 candidates at the time of writing :-) Reviewed by: bde
1999-08-15 18:59:44 +00:00
#define DUMMY(s) \
int \
linux_ ## s(struct proc *p, struct linux_ ## s ## _args *args) \
{ \
return (unsupported_msg(p, #s)); \
} \
struct __hack
static int
unsupported_msg(struct proc *p, const char *fname)
{
Fix lingo: 'is not implemented or obsoleted' is not the same as 'is obsoleted or not implemented'.
1999-08-25 13:17:05 +00:00
printf("linux: syscall %s is obsoleted or not implemented (pid=%ld)\n",
Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always know if and when an unimplemented or obsoleted syscall is being used. Make the message more end-user friendly. And as long as we're here, rename some unimplemeted syscalls (linux_phys -> linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86). Change prototype for linux_newuname from `struct linux_newuname_t *' into `struct linux_new_utsname *'. This change is reflected in linux.h and linux_misc.c.
1999-08-25 11:19:03 +00:00
fname, (long)p->p_pid);
Major rewrite. The first reason for this rewrite is KNF conformance. The second reason is to avoid redundancy. Each function printed the same string, with only the syscall name being different. The actual printing is now performed by a single function, which gets the syscall name as an argument. The third reason is that of convenience. It's now very easy to add a new dummy implementation. Just add ``DUMMY(foo);'' to the file. It's also a lot easier now to see if a syscall has a dummy implementation or not. The dummies are ordered on syscall number. Please maintain this when adding new dummies (there're 32 candidates at the time of writing :-) Reviewed by: bde
1999-08-15 18:59:44 +00:00
return (ENOSYS);
}
DUMMY(setup);
DUMMY(break);
DUMMY(stat);
DUMMY(mount);
DUMMY(umount);
DUMMY(stime);
DUMMY(ptrace);
DUMMY(fstat);
DUMMY(stty);
DUMMY(gtty);
DUMMY(ftime);
DUMMY(prof);
Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always know if and when an unimplemented or obsoleted syscall is being used. Make the message more end-user friendly. And as long as we're here, rename some unimplemeted syscalls (linux_phys -> linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86). Change prototype for linux_newuname from `struct linux_newuname_t *' into `struct linux_new_utsname *'. This change is reflected in linux.h and linux_misc.c.
1999-08-25 11:19:03 +00:00
DUMMY(umount2);
Major rewrite. The first reason for this rewrite is KNF conformance. The second reason is to avoid redundancy. Each function printed the same string, with only the syscall name being different. The actual printing is now performed by a single function, which gets the syscall name as an argument. The third reason is that of convenience. It's now very easy to add a new dummy implementation. Just add ``DUMMY(foo);'' to the file. It's also a lot easier now to see if a syscall has a dummy implementation or not. The dummies are ordered on syscall number. Please maintain this when adding new dummies (there're 32 candidates at the time of writing :-) Reviewed by: bde
1999-08-15 18:59:44 +00:00
DUMMY(lock);
DUMMY(mpx);
DUMMY(ulimit);
DUMMY(olduname);
DUMMY(ustat);
DUMMY(ioperm);
DUMMY(ksyslog);
DUMMY(uname);
DUMMY(vhangup);
DUMMY(idle);
Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always know if and when an unimplemented or obsoleted syscall is being used. Make the message more end-user friendly. And as long as we're here, rename some unimplemeted syscalls (linux_phys -> linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86). Change prototype for linux_newuname from `struct linux_newuname_t *' into `struct linux_new_utsname *'. This change is reflected in linux.h and linux_misc.c.
1999-08-25 11:19:03 +00:00
DUMMY(vm86old);
Major rewrite. The first reason for this rewrite is KNF conformance. The second reason is to avoid redundancy. Each function printed the same string, with only the syscall name being different. The actual printing is now performed by a single function, which gets the syscall name as an argument. The third reason is that of convenience. It's now very easy to add a new dummy implementation. Just add ``DUMMY(foo);'' to the file. It's also a lot easier now to see if a syscall has a dummy implementation or not. The dummies are ordered on syscall number. Please maintain this when adding new dummies (there're 32 candidates at the time of writing :-) Reviewed by: bde
1999-08-15 18:59:44 +00:00
DUMMY(swapoff);
DUMMY(sysinfo);
DUMMY(modify_ldt);
DUMMY(adjtimex);
DUMMY(create_module);
DUMMY(init_module);
DUMMY(delete_module);
DUMMY(get_kernel_syms);
DUMMY(quotactl);
DUMMY(bdflush);
Change all UNIMPL syscalls to STD and add them to linux_dummy. Now we always know if and when an unimplemented or obsoleted syscall is being used. Make the message more end-user friendly. And as long as we're here, rename some unimplemeted syscalls (linux_phys -> linux_umount2, linux_vm86 -> linux_vm86old, linux_new_vm86 -> linux_vm86). Change prototype for linux_newuname from `struct linux_newuname_t *' into `struct linux_new_utsname *'. This change is reflected in linux.h and linux_misc.c.
1999-08-25 11:19:03 +00:00
DUMMY(sysfs);
DUMMY(afs_syscall);
DUMMY(setfsuid);
DUMMY(setfsgid);
DUMMY(getsid);
DUMMY(fdatasync);
DUMMY(sysctl);
DUMMY(setresuid);
DUMMY(getresuid);
DUMMY(vm86);
DUMMY(query_module);
DUMMY(nfsservctl);
DUMMY(setresgid);
DUMMY(getresgid);
DUMMY(prctl);
DUMMY(rt_sigreturn);
DUMMY(rt_sigpending);
DUMMY(rt_sigtimedwait);
DUMMY(rt_sigqueueinfo);
DUMMY(rt_sigsuspend);
DUMMY(pread);
DUMMY(pwrite);
DUMMY(capget);
DUMMY(capset);
DUMMY(sigaltstack);
DUMMY(sendfile);
DUMMY(getpmsg);
DUMMY(putpmsg);
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