- don't use managed mappings/backing objects for wired memory allocations.
save some resources like pv_entry. also fix (most of) PR/27030.
- simplify kernel memory management API.
- simplify pmap bootstrap of some ports.
- some related cleanups.
* 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.
OID 0. Only OID 0.3 is implemented for now, it 0.3 is the equivalent of
NetBSD's sysctlgetmibinfo().
This includes a new sysctl kern.osreldate with the value __NetBSD_Version__
for kernels with COMPAT_FREEBSD.
Both of these are used by 3ware's FreeBSD tw_cli, which seems to work now.
of the generic (NetBSD specific) sendsig().
We can only work with ...sigcontext for now anyway; the
versioning stuff in sendsig() isn't helpful for osf1 emul.
instead of the compat16_ thing.
This saves 2 pointless copyout/copyin cycles to/from
the "stackgap" buffer, and it gets us a step closer
to a COMPAT_OSF! which works w/o COMPAT_16.
This still doesn't support SA_SIGINFO because the old
COMPAT_16 signal trampoline is used.
1. make fileops const
2. add 2 new negative errno's to `officially' support the cloning hack:
- EDUPFD (used to overload ENODEV)
- EMOVEFD (used to overload ENXIO)
3. Created an fdclone() function to encapsulate the operations needed for
EMOVEFD, and made all cloners use it.
4. Centralize the local noop/badop fileops functions to:
fnullop_fcntl, fnullop_poll, fnullop_kqfilter, fbadop_stat
do { ... } while(/*CONSTCOND*/0)
so that they can be used unadorned in if/else blocks, etc. This means
that you now *have* to put a ; at the end of the "call" to these
macros.
supported options can't get out of sync. This add support for the
linux __WCLONE and __WALL options (NetBSD version: WALTSIG and WALLSIG)
Add a diagnostic check to see if the one unhandled option (__WNOTHREAD) is
specified.
This should prevent linux processes from losing their children and creating
tons of zombie processes.
a proclist and call the specified function for each of them.
primarily to fix a procfs locking problem, but i think that it's useful for
others as well.
while i'm here, introduce PROCLIST_FOREACH macro, which is similar to
LIST_FOREACH but skips marker entries which are used by proclist_foreach_call.
segment should succeed even if the segment would be marked removed; use this
to implement the Linux-compatible semantics of shmat(2)
this fixes the old Linux VMware3 graphics problem with local display,
and possibly other local Linux X clients using MIT-SHM
for Linux-compatible shmat() behaviour - shmat() for the removed shared memory
segment must work from all callers, the shared memory id could be passed e.g.
to native X server via MIT-SHM
temporarily remove the functionality, the Linux-compatible semantics
will be reimplemented differently
provide f_frsize. It cannot be actually used to GNU C statvfs() bug
in f_frsize != f_bsize case, so just keep pretending we don't support it.
Update comments and explain the situation in detail there.
explicit size types - the structure definition is actually identical
on currently support COMPAT_LINUX archs, so no point to have 6 copies of it
in the tree
- filesystem size is expressed in number of fragments, not blocks;
this fixes computed filesystem sizes for Linux df(1) and other Linux
binaries using statfs(2) for filesystems, which use different value
for frament and block, such as FFS
- use FS f_namemax instead of always using MAXNAMLEN
- print the socketcall type
- special case socket(2) call, it's also the only one with first argument
not being a socket descriptor
- only dump the relevant part of linux_socketcall_dummy_args, instead
of always the whole structure
grow-down auto extend segment) by allocating segment sized at
current stack size limit, and offsetting requested/returned address
as required
due to how normal virtual memory management work, allocating the
full sized stack memory segment up-front actually requires exactly same
amount of VA space and physical memory as the Linux 'grow' scheme and the
'grow' scheme is quite a lot more difficult to use in applications correctly,
so it's not very apparent why Linux introduced this feature at all
this fixes Thomas Klausner's Heroes3 crash, and might also
fix PR 26687 by Jan Schaumann
sys/kern/exec_aout.c back in *1995*, apparently the line from my
license notice:
* must display the following acknowledgement:
was accidentally dropped. This mistake was propagated into
hpux_exec_aout.c when it was split out of hpux_exec.c.
(Thanks to hubertf for noticing!)
* Rather than using mnt_maxsymlinklen to indicate that a file systems returns
d_type fields(!), add a new internal flag, IMNT_DTYPE.
Add 3 new elements to ufsmount:
* um_maxsymlinklen, replaces mnt_maxsymlinklen (which never should have existed
in the first place).
* um_dirblksiz, which tracks the current directory block size, eliminating the
FS-specific checks littered throughout the code. This may be used later to
make the block size variable.
* um_maxfilesize, which is the maximum file size, possibly adjusted lower due
to implementation issues.
Sync some bug fixes from FFS into ext2fs, particularly:
* ffs_lookup.c 1.21, 1.28, 1.33, 1.48
* ffs_inode.c 1.43, 1.44, 1.45, 1.66, 1.67
* ffs_vnops.c 1.84, 1.85, 1.86
Clean up some crappy pointer frobnication.
rather than EPERM; to emulate this properly, translate the error to EISDIR
if the target patch exists and points to a directory
this fixes the 'ant clean' problem reported by Marc Recht on current-users@
with SuSE 9.1 libraries
share same 'break' value used for brk()/sbrk(), otherwise application SIGSEGVs
quickly once different threads try to adjust data segment size
this fixes linux Mozilla crashes with SuSE 9.1 libraries, and possibly
other linux applications using real threads
connect madvise(2) and mincore(2) - apparently the newer Linux libs
don't stub it anymore, so allow the application to take advantage
of them
the Linux calls appear to be compatible in the flag values and semantics,
so a wrapper is not necessary
don't stub it anymore, so allow the application to take advantage
of them
the Linux calls appear to be compatible in the flag values and semantics,
so a wrapper is not necessary
itself needs to be translated. It means that we must translate it in
every system call using it: recvfrom, sendto, connect, accept, bind,
getpeername, getsockname.
library call). Programs such as ifconfig or XFree86 4.4 XDarwin use it.
The emulation is not complete, as ifconfig is not able to display inet6
addresses correctly.
This areas is called the comm pages. It is used to provide fast access to
several data and functions.
The comm pages are mapped starting at 0xffff800 (address chosed so that
absolute branch can be used, so it can be accessed even when dynamic linking
is not ready). NetBSD has the user stack here, so we need to provide a
Darwin-specific stack setup routine which sets the top of the stack at
0xbfff0000.
This implementation is not complete but it does enough to get MacOS X.3
starting again (static binaries run, dynamic binaries still have an issue).
in the comm pages functions, we only implement bcopy, pthread_self and
memcpy.
TODO:
- clean up the powerpc specific code from MD parts
- for now we map only one page to avoid a crash, we want two pages.
- write all the comm functions.
fhstatvfs1 and getvfsstat)
o Move the statfs family out of netbsd32_fs.c and netbsd32_netbsd.c to
netbsd_compat_20.c, compiled with COMPAT_20
Reviewed by christos@.
native version does non executable mappings on the stack. This is a
showstopper for Linux binaries.
To fix that we supply a copy f the native stack setup function for Linux
binaries, with the executable bit set.
otherwise, linux_syscall() returns garbage, at least on i386.
(it returns native_to_linux_errno[EPASSTHROUGH] where EPASSTHROUGH == -4.)
i choose EINVAL rather than ENOTTY, because linux's pipe returns it
and i think that it's a common case.
- Not enabled by default. Needs kernel option FFS_SNAPSHOT.
- Change parameters of ffs_blkfree.
- Let the copy-on-write functions return an error so spec_strategy
may fail if the copy-on-write fails.
- Change genfs_*lock*() to use vp->v_vnlock instead of &vp->v_lock.
- Add flag B_METAONLY to VOP_BALLOC to return indirect block buffer.
- Add a function ffs_checkfreefile needed for snapshot creation.
- Add special handling of snapshot files:
Snapshots may not be opened for writing and the attributes are read-only.
Use the mtime as the time this snapshot was taken.
Deny mtime updates for snapshot files.
- Add function transferlockers to transfer any waiting processes from
one lock to another.
- Add vfsop VFS_SNAPSHOT to take a snapshot and make it accessible through
a vnode.
- Add snapshot support to ls, fsck_ffs and dump.
Welcome to 2.0F.
Approved by: Jason R. Thorpe <thorpej@netbsd.org>
Add a new explicit `struct proc *p' argument to socreate(), sosend().
Use that argument instead of curproc. Follow-on changes to pass that
argument to socreate(), sosend(), and (*so->so_send)() calls.
These changes reviewed and independently recoded by Matt Thomas.
Changes to soreceive() and (*dom->dom_exernalize() from Matt Thomas:
pass soreceive()'s struct uio* uio->uio_procp to unp_externalize().
Eliminate curproc from unp_externalize. Also, now soreceive() uses
its uio->uio_procp value, pass that same value downward to
((pr->pru_usrreq)() calls for consistency, instead of (struct proc * )0.
Similar changes in sys/nfs to eliminate (most) uses of curproc,
either via the req-> r_procp field of a struct nfsreq *req argument,
or by passing down new explicit struct proc * arguments.
Reviewed by: Matt Thomas, posted to tech-kern.
NB: The (*pr->pru_usrreq)() change should be tested on more (all!) protocols.
and tweak lkminit_*.c (where applicable) to call them, and to call
sysctl_teardown() when being unloaded.
This consists of (1) making setup functions not be static when being
compiled as lkms (change to sys/sysctl.h), (2) making prototypes
visible for the various setup functions in header files (changes to
various header files), and (3) making simple "load" and "unload"
functions in the actual lkminit stuff.
linux_sysctl.c also needs its root exposed (ie, made not static) for
this (when built as an lkm).
hostid of the machine rather than always getting "0". Tested with
hostid(1) from solaris-2.8 and with lmhostid (part of FlexLM) for solaris.
Approved by atatat@.
from here: set p_execsw to the new thing, and call
the new emulation's syscall_intern()
XXX there are more differences to kern_exec.c, sa/ras
related afaics, this is harmliss for now since
netbsd32 doesn't support multithreaded programs yet --
one day one execve() implementation should be shared
by native and netbsd32 code.
PR#23470, with minor updates by me. This is only the syscall support
from that PR, for now.
Changes: port over fix from FreeBSD for multicast address generation.
Changed bcopy to memcpy. For now, #ifdef notyet the portions of
kern_uuid.c that are meant to be used by (currently nonexistent) other
things in the kernel. Added syscall to COMPAT_FREEBSD as well, though
that's currently not useful, as any program new enough to use this call
also uses other syscalls we don't (yet) emulate.
- delete ktrsyscall32()
- add a check #ifdef _LP64 to do the conversion if P_32 is set to the
standard ktrsyscall()
- add a couple of similar _LP64/P_32 checks to the systrace code.
this should get systrace working for 32 bit apps as well as complete
ktrace support for "trace_enter/trace_exit" using platforms such as amd64.
XXX: systrace isn't supported on sparc64 currently... (it doesn't use
trace_enter/trace_exit, or have it's own calls to systrace_xxx()...)
the main purpose of this function is to adjust the "argsize" value of
the ktrace syscall record, otherwise userland will see N/2 (rounded
down) arguments instead of N.
raised the exception, don't release the lock, this causes a crash (the lock
shall be released by the process that took it). Wakeup the thread instead,
it will release the lock itself.
emul.darwin.init.pid instead of emul.darwin.init_pid, and so on.
This breaks backward compatibility with the pre-dynamic sysctl(8) for
emul.darwin, but it has never been available in a formal release, so
it should be alright.
remote process. This new implementation also passes all the test programs
I've written so far.
- When exceptions come from traps, no UNIX signal should evet be sent.
- Add a lock to ensure a debugger handles only one exception at a time
- Use a structure to hold flavor and behavior in exception ports, instead
of stuffing the two argument into an int.
- Implement new Mach services: thread_suspend, thread_resume and thread_abort
- Implement Darwin's ptrace PT_ATTACHEXC and PT_THUPDATE commands
- Handle NULL second argument correctly in sigprocmask.
- One mistake in the last commit (darwin_tracesig prototype)
fvdl