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freebsd-dev/sys/alpha/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
/*-
Minimal set of diffs from the i386 bits to the AlphaLinux. (based on a patch to sys/i386/linux/linux_dummy.c by gallatin)
2000-11-01 16:34:16 +00:00
* Copyright (c) 2000 Andrew Gallatin
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
Fix typo in the BSD copyright: s/withough/without/ Spotted and suggested by: des MFC after: 3 weeks
2002-06-02 20:05:59 +00:00
* derived from this software without specific prior written permission
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
*
* 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.
*/
Use __FBSDID().
2003-06-10 17:02:51 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
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
Minimal set of diffs from the i386 bits to the AlphaLinux. (based on a patch to sys/i386/linux/linux_dummy.c by gallatin)
2000-11-01 16:34:16 +00:00
#include <alpha/linux/linux.h>
Don't auto-generate the syscalls.
2000-12-03 01:30:31 +00:00
#include <alpha/linux/linux_proto.h>
use DUMMY macro and support from linux_util.h
2000-11-01 23:13:49 +00:00
#include <compat/linux/linux_util.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
DUMMY(ptrace);
Round of cleanups and enhancements. These include (in random order): o Introduce private types for use in linux syscalls for two reasons: 1. establish type independence for ease in porting and, 2. provide a visual queue as to which syscalls have proper prototypes to further cleanup the i386/alpha split. Linuxulator types are prefixed by 'l_'. void and char have not been "virtualized". o Provide dummy functions for all syscalls and remove dummy functions or implementations of truely obsolete syscalls. o Sanitize the shm*, sem* and msg* syscalls. o Make a first attempt to implement the linux_sysctl syscall. At this time it only returns one MIB (KERN_VERSION), but most importantly, it tells us when we need to add additional sysctls :-) o Bump the kenel version up to 2.4.2 (this is not the same as the KERN_VERSION MIB, BTW). o Implement new syscalls, of which most are specific to i386. Our syscall table is now up to date with Linux 2.4.2. Some highlights: - Implement the 32-bit uid_t and gid_t bases syscalls. - Implement a couple of 64-bit file size/offset bases syscalls. o Fix or improve numerous syscalls and prototypes. o Reduce style(9) violations while I'm here. Especially indentation inconsistencies within the same file are addressed. Re-indenting did not obfuscate actual changes to the extend that it could not be combined. NOTE: I spend some time testing these changes and found that if there were regressions, they were not caused by these changes AFAICT. It was observed that installing a RH 7.1 runtime environment did make matters worse. Hangs and/or reboots have been observed with and without these changes, so when it failed to make life better in cases it doesn't look like it made it worse.
2001-09-08 19:07:04 +00:00
DUMMY(syslog);
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(vhangup);
DUMMY(swapoff);
DUMMY(sysinfo);
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);
Revert implementation of setfsuid and setfsgid due to security issues. Requested by: rwatson Backed by: kris
2000-07-20 05:37:41 +00:00
DUMMY(setfsuid);
DUMMY(setfsgid);
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(query_module);
DUMMY(nfsservctl);
DUMMY(prctl);
DUMMY(rt_sigpending);
DUMMY(rt_sigtimedwait);
DUMMY(rt_sigqueueinfo);
DUMMY(capget);
DUMMY(capset);
DUMMY(sendfile);
Round of cleanups and enhancements. These include (in random order): o Introduce private types for use in linux syscalls for two reasons: 1. establish type independence for ease in porting and, 2. provide a visual queue as to which syscalls have proper prototypes to further cleanup the i386/alpha split. Linuxulator types are prefixed by 'l_'. void and char have not been "virtualized". o Provide dummy functions for all syscalls and remove dummy functions or implementations of truely obsolete syscalls. o Sanitize the shm*, sem* and msg* syscalls. o Make a first attempt to implement the linux_sysctl syscall. At this time it only returns one MIB (KERN_VERSION), but most importantly, it tells us when we need to add additional sysctls :-) o Bump the kenel version up to 2.4.2 (this is not the same as the KERN_VERSION MIB, BTW). o Implement new syscalls, of which most are specific to i386. Our syscall table is now up to date with Linux 2.4.2. Some highlights: - Implement the 32-bit uid_t and gid_t bases syscalls. - Implement a couple of 64-bit file size/offset bases syscalls. o Fix or improve numerous syscalls and prototypes. o Reduce style(9) violations while I'm here. Especially indentation inconsistencies within the same file are addressed. Re-indenting did not obfuscate actual changes to the extend that it could not be combined. NOTE: I spend some time testing these changes and found that if there were regressions, they were not caused by these changes AFAICT. It was observed that installing a RH 7.1 runtime environment did make matters worse. Hangs and/or reboots have been observed with and without these changes, so when it failed to make life better in cases it doesn't look like it made it worse.
2001-09-08 19:07:04 +00:00
DUMMY(getdtablesize);
DUMMY(gethostname);
DUMMY(getpagesize);
DUMMY(mincore);
DUMMY(old_adjtimex);
DUMMY(pciconfig_iobase);
DUMMY(pciconfig_read);
DUMMY(pciconfig_write);
DUMMY(pivot_root);
DUMMY(recvmsg);
DUMMY(sendmsg);
DUMMY(sethae);
DUMMY(sigaltstack);
DUMMY(sigpending);
DUMMY(socketpair);
DUMMY(utimes);
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