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

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/* -> /*- for license, add FreeBSD tag
2005-01-06 23:22:04 +00:00
/*-
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.c,v 1.5 1995/01/22 23:44:50 christos Exp
*/
Use __FBSDID().
2003-06-02 06:48:51 +00:00
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
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
#include <sys/param.h>
#include <sys/systm.h>
- Implement ibcs2_emul_find() using kern_alternate_path(). This changes the semantics in that the returned filename to use is now a kernel pointer rather than a user space pointer. This required changing the arguments to the CHECKALT*() macros some and changing the various system calls that used pathnames to use the kern_foo() functions that can accept kernel space filename pointers instead of calling the system call directly. - Use kern_open(), kern_access(), kern_execve(), kern_mkfifo(), kern_mknod(), kern_setitimer(), kern_getrusage(), kern_utimes(), kern_unlink(), kern_chdir(), kern_chmod(), kern_chown(), kern_symlink(), kern_readlink(), kern_select(), kern_statfs(), kern_fstatfs(), kern_stat(), kern_lstat(), kern_fstat(). - Drop the unused 'uap' argument from spx_open(). - Replace a stale duplication of vn_access() in xenix_access() lacking recent additions such as MAC checks, etc. with a call to kern_access().
2005-02-07 22:02:18 +00:00
#include <sys/syscallsubr.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
#include <i386/ibcs2/ibcs2_util.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
Introduce NDFREE (and remove VOP_ABORTOP)
1999-12-15 23:02:35 +00:00
Change alternate space base name from /emul/ibcs2 to /compat/ibcs2, in line with linux alt space of /compat/linux. This was pointed out by Stefan Esser. In cheching alt space for libraries in imgact_coff.c, use const ibcs2_emul_path instead of its own local string. Also do a proper malloc of temp name according to MAXPATHLEN.
1995-10-10 17:33:19 +00:00
const char ibcs2_emul_path[] = "/compat/ibcs2";
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
/*
* Search an alternate path before passing pathname arguments on
Fix typo: seperate -> separate. Seperate does not exist in the english language.
2001-02-06 11:21:58 +00:00
* to system calls. Useful for keeping a separate 'emulation tree'.
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
*
* If cflag is set, we check if an attempt can be made to create
* the named file, i.e. we check if the directory it should
* be in exists.
*/
int
- Implement ibcs2_emul_find() using kern_alternate_path(). This changes the semantics in that the returned filename to use is now a kernel pointer rather than a user space pointer. This required changing the arguments to the CHECKALT*() macros some and changing the various system calls that used pathnames to use the kern_foo() functions that can accept kernel space filename pointers instead of calling the system call directly. - Use kern_open(), kern_access(), kern_execve(), kern_mkfifo(), kern_mknod(), kern_setitimer(), kern_getrusage(), kern_utimes(), kern_unlink(), kern_chdir(), kern_chmod(), kern_chown(), kern_symlink(), kern_readlink(), kern_select(), kern_statfs(), kern_fstatfs(), kern_stat(), kern_lstat(), kern_fstat(). - Drop the unused 'uap' argument from spx_open(). - Replace a stale duplication of vn_access() in xenix_access() lacking recent additions such as MAC checks, etc. with a call to kern_access().
2005-02-07 22:02:18 +00:00
ibcs2_emul_find(struct thread *td, char *path, enum uio_seg pathseg,
char **pbuf, int cflag)
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
{
- Implement ibcs2_emul_find() using kern_alternate_path(). This changes the semantics in that the returned filename to use is now a kernel pointer rather than a user space pointer. This required changing the arguments to the CHECKALT*() macros some and changing the various system calls that used pathnames to use the kern_foo() functions that can accept kernel space filename pointers instead of calling the system call directly. - Use kern_open(), kern_access(), kern_execve(), kern_mkfifo(), kern_mknod(), kern_setitimer(), kern_getrusage(), kern_utimes(), kern_unlink(), kern_chdir(), kern_chmod(), kern_chown(), kern_symlink(), kern_readlink(), kern_select(), kern_statfs(), kern_fstatfs(), kern_stat(), kern_lstat(), kern_fstat(). - Drop the unused 'uap' argument from spx_open(). - Replace a stale duplication of vn_access() in xenix_access() lacking recent additions such as MAC checks, etc. with a call to kern_access().
2005-02-07 22:02:18 +00:00
return (kern_alternate_path(td, ibcs2_emul_path, path, pathseg, pbuf,
cflag));
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
}
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