Commit Graph

489 Commits

Author SHA1 Message Date
jhb
d92d6a0f9f Use linux_emul_convpath() rather than linux_emul_find() as
linux_emul_find() is going away.
2005-02-07 18:37:51 +00:00
jhb
2e8b9720fa Use the LCONVPATHEXIST() macro rather than it's exact expansion to be
consistent.
2005-02-07 18:37:13 +00:00
das
89cc41ef8f When running Linux binaries, set up the initial FPU state as Linux
would.

PR:	28966
2005-02-06 17:29:20 +00:00
sobomax
f489acaf0f o Split out kernel part of execve(2) syscall into two parts: one that
copies arguments into the kernel space and one that operates
  completely in the kernel space;

o use kernel-only version of execve(2) to kill another stackgap in
  linuxlator/i386.

Obtained from:  DragonFlyBSD (partially)
MFC after:      2 weeks
2005-01-29 23:12:00 +00:00
sobomax
ef41053770 o Move copyin()/copyout() out of i386_{get,set}_ldt() and
i386_{get,set}_ioperm() and make those APIs visible in the kernel namespace;

o use i386_{get,set}_ldt() and i386_{get,set}_ioperm() instead of sysarch()
  in the linuxlator, which allows to kill another two stackgaps.

MFC after:	2 weeks
2005-01-26 13:59:46 +00:00
imp
8d58b9df12 /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 22:18:23 +00:00
das
7f13dc5af0 Axe the semblance of support for PECOFF and Linux a.out core dumps. 2004-11-27 06:46:45 +00:00
das
8d8b5ace18 Maintain the broken state of backwards compatibilty for a.out (and
PECOFF!) core dumps.  None of the old versions of gdb I tried were
able to read a.out core dumps before or after this change.

Reviewed by:	arch@
2004-11-20 02:32:04 +00:00
das
81fc7cf485 Fix the following race:
1. Process p1 is currently being swapped in.
  2. Process p2 calls linux_ptrace(PTRACE_GETFPXREGS, p1_pid, ...)
  3. After acquiring a reference to FIRST_THREAD_IN_PROC(p1),
     p2 blocks in faultin() while p1 finishes being swapped in.
     This means p2 won't get back the lock on p1 until after p1's
     threads are runnable.
  4. After p1 is swapped in, the first thread in p1 exits.
  5. p2 now uses its dangling reference to p1's first thread.
2004-10-01 05:01:00 +00:00
dfr
abfb7537fa Regen. 2004-09-06 09:33:30 +00:00
dfr
865b03d472 Add a few stub syscalls to get TransGaming's winex a bit closer to
working.
2004-09-06 09:32:59 +00:00
julian
e9d9514975 Give setrunqueue() and sched_add() more of a clue as to
where they are coming from and what is expected from them.

MFC after:	2 days
2004-09-01 02:11:28 +00:00
jhb
325fe79e0c Correct the arguments to kern_sigaltstack() as they were reversed.
PR:		kern/68079
Submitted by:	Georg-W. Koltermann gwk at rahn-koltermann dot de
2004-08-24 20:52:52 +00:00
jhb
ac08ecfc54 Regenerate after fcntl() wrappers were marked MP safe. 2004-08-24 20:24:34 +00:00
jhb
cc23ea84d0 Fix the ABI wrappers to use kern_fcntl() rather than calling fcntl()
directly.  This removes a few more users of the stackgap and also marks
the syscalls using these wrappers MP safe where appropriate.

Tested on:	i386 with linux acroread5
Compiled on:	i386, alpha LINT
2004-08-24 20:21:21 +00:00
tjr
e6930a385c Add a new type, l_uintptr_t, which is an unsigned integer type with the
same width as a pointer under Linux. Add two new macros, PTRIN and PTROUT,
which convert between l_uintptr_t and native pointers.
2004-08-16 07:05:44 +00:00
phk
5c95d686a1 Do a pass over all modules in the kernel and make them return EOPNOTSUPP
for unknown events.

A number of modules return EINVAL in this instance, and I have left
those alone for now and instead taught MOD_QUIESCE to accept this
as "didn't do anything".
2004-07-15 08:26:07 +00:00
stefanf
9dea8aeba1 Consistently use __inline instead of __inline__ as the former is an empty macro
in <sys/cdefs.h> for compilers without support for inline.
2004-07-04 16:11:03 +00:00
obrien
73ce2e712d Add casts so all these quantities are a constant type. 2004-06-24 02:24:39 +00:00
tjr
02a7d287a2 Change the types of vn_rdwr_inchunks()'s len and aresid arguments to
size_t and size_t *, respectively. Update callers for the new interface.
This is a better fix for overflows that occurred when dumping segments
larger than 2GB to core files.
2004-06-05 02:18:28 +00:00
bms
54410035ea Use the BSD madvise() syscall implementation for Linux binary emulation,
instead of treating it as an unimplemented syscall. This appears to make
StarOffice 7.0 Linux binaries work according to submitter; also tested
with nvidia driver by submitter.

Submitted by:	Matthias Schuendehuette
2004-03-28 21:43:27 +00:00
jhb
15596982a5 Regenerate. 2004-03-15 22:44:35 +00:00
jhb
28f51bd3cc - Mark ABI syscalls that call wait4() MP safe as recent changes to
the kernel wait4() made these all panic() implementations otherwise.
- The i386 linux_ptrace() syscall is MP safe.  Alpha was already marked
  MP safe.
2004-03-15 22:43:49 +00:00
jhb
27c73ac133 Regen. 2004-02-04 22:00:44 +00:00
jhb
bb001b4d31 The following compat syscalls are now mpsafe: linux_getrlimit(),
linux_setrlimit(), linux_old_getrlimit(), osf1_getrlimit(),
osf1_setrlimit(), svr4_sys_ulimit(), svr4_sys_setrlimit(),
svr4_sys_getrlimit(), svr4_sys_setrlimit64(), svr4_sys_getrlimit64(),
ibcs2_sysconf(), and ibcs2_ulimit().
2004-02-04 21:57:00 +00:00
jhb
279b2b8278 Locking for the per-process resource limits structure.
- struct plimit includes a mutex to protect a reference count.  The plimit
  structure is treated similarly to struct ucred in that is is always copy
  on write, so having a reference to a structure is sufficient to read from
  it without needing a further lock.
- The proc lock protects the p_limit pointer and must be held while reading
  limits from a process to keep the limit structure from changing out from
  under you while reading from it.
- Various global limits that are ints are not protected by a lock since
  int writes are atomic on all the archs we support and thus a lock
  wouldn't buy us anything.
- All accesses to individual resource limits from a process are abstracted
  behind a simple lim_rlimit(), lim_max(), and lim_cur() API that return
  either an rlimit, or the current or max individual limit of the specified
  resource from a process.
- dosetrlimit() was renamed to kern_setrlimit() to match existing style of
  other similar syscall helper functions.
- The alpha OSF/1 compat layer no longer calls getrlimit() and setrlimit()
  (it didn't used the stackgap when it should have) but uses lim_rlimit()
  and kern_setrlimit() instead.
- The svr4 compat no longer uses the stackgap for resource limits calls,
  but uses lim_rlimit() and kern_setrlimit() instead.
- The ibcs2 compat no longer uses the stackgap for resource limits.  It
  also no longer uses the stackgap for accessing sysctl's for the
  ibcs2_sysconf() syscall but uses kernel_sysctl() instead.  As a result,
  ibcs2_sysconf() no longer needs Giant.
- The p_rlimit macro no longer exists.

Submitted by:	mtm (mostly, I only did a few cleanups and catchups)
Tested on:	i386
Compiled on:	alpha, amd64
2004-02-04 21:52:57 +00:00
davidxu
d72ded3ec8 Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.
2004-01-03 23:31:29 +00:00
davidxu
f39653dda8 Make sigaltstack as per-threaded, because per-process sigaltstack state
is useless for threaded programs, multiple threads can not share same
stack.
The alternative signal stack is private for thread, no lock is needed,
the orignal P_ALTSTACK is now moved into td_pflags and renamed to
TDP_ALTSTACK.
For single thread or Linux clone() based threaded program, there is no
semantic changed, because those programs only have one kernel thread
in every process.

Reviewed by: deischen, dfr
2004-01-03 02:02:26 +00:00
bde
14fc79e77b Sorted includes. Removed duplicates exposed by this. 2003-12-29 06:51:10 +00:00
peter
72906fa267 GC unused 'syshide' override to /dev/null. This was here to disable
the output of the namespc column.  Its functionality was removed some time
ago, but the overrides and the namespc column remained.
2003-12-24 00:32:07 +00:00
peter
66b968e3cb Regen (should be a NOP except for rcsid changes) 2003-12-23 03:55:06 +00:00
peter
1246f19923 GC unused third namespace column. 2003-12-23 03:54:40 +00:00
peter
998b79089f Add an additional field to the elf brandinfo structure to support
quicker exec-time replacement of the elf interpreter on an emulation
environment where an entire /compat/* tree isn't really warranted.
2003-12-23 02:42:39 +00:00
sobomax
a621621dc9 Pull latest changes from OpenBSD:
- improve sysinfo(2) syscall;
- add dummy fadvise64(2) syscall;
- add dummy *xattr(2) family of syscalls;
- add protos for the syscalls 222-225, 238-249 and 253-267;
- add exit_group(2) syscall, which is currently just wired to exit(2).

Obtained from:  OpenBSD
MFC after:      2 weeks
2003-11-16 15:07:10 +00:00
jhb
2be76da54f Regen. 2003-11-07 21:36:35 +00:00
jhb
15178fba7e Sync up MP safe flags with global syscalls.master for the first time. This
includes read(), write(), close(), linux_setuid16(), linux_getuid16(),
linux_pause(), linux_nice(), linux_kill(), dup(), linux_pipe(),
linux_setgid16(), linux_getgid16(), linux_signal(), linux_geteuid16(),
linux_getegid16(), acct(), setpgid(), umask(), dup2(), getppid(),
getpgrp(), setsid(), linux_sigaction(), linux_sgetmask(), linux_ssetmask(),
linux_setreuid16(), linux_setregid16(), linux_sigsuspend(), getrusage(),
gettimeofday(), linux_getgroups16(), linux_setgroups16(), getpriority(),
setpriority(), linux_sigreturn(), linux_clone(), linux_sigprocmask(),
linux_getsid(), mlock(), munlock(), mlockall(), munlockall(),
sched_setparam(), sched_getparam(), linux_sched_setscheduler(),
linux_sched_getscheduler(), linux_sched_get_priority_max(),
linux_sched_get_priority_min(), sched_rr_get_interval(),
linux_setresuid16(), linux_getresuid16(), linux_setresgid16(),
linux_getresgid16(), linux_rt_sigaction(), linux_rt_sigprocmask(),
linux_rt_sigsuspend(), geteuid(), getegid(), setreuid(), setregid(),
linux_getgroups(), linux_setgroups(), setresuid(), getresuid(),
setresgid(), getresgid(), setuid(), and setgid().
2003-11-07 21:36:14 +00:00
peter
8ecb3577d8 Add sysentvec->sv_fixlimits() hook so that we can catch cases on 64 bit
systems where the data/stack/etc limits are too big for a 32 bit process.

Move the 5 or so identical instances of ELF_RTLD_ADDR() into imgact_elf.c.

Supply an ia32_fixlimits function.  Export the clip/default values to
sysctl under the compat.ia32 heirarchy.

Have mmap(0, ...) respect the current p->p_limits[RLIMIT_DATA].rlim_max
value rather than the sysctl tweakable variable.  This allows mmap to
place mappings at sensible locations when limits have been reduced.

Have the imgact_elf.c ld-elf.so.1 placement algorithm use the same
method as mmap(0, ...) now does.

Note that we cannot remove all references to the sysctl tweakable
maxdsiz etc variables because /etc/login.conf specifies a datasize
of 'unlimited'.  And that causes exec etc to fail since it can no
longer find space to mmap things.
2003-09-25 01:10:26 +00:00
bde
216d4d73b8 Restored non-egregious casts so that this file compiles on i386's with
64-bit longs again.
2003-09-07 13:23:45 +00:00
davidxu
abb4420bbe Rename P_THREADED to P_SA. P_SA means a process is using scheduler
activations.
2003-06-15 00:31:24 +00:00
obrien
d898e2dba5 Use __FBSDID(). 2003-06-02 16:56:40 +00:00
jhb
89a4eb17de - Merge struct procsig with struct sigacts.
- Move struct sigacts out of the u-area and malloc() it using the
  M_SUBPROC malloc bucket.
- Add a small sigacts_*() API for managing sigacts structures: sigacts_alloc(),
  sigacts_free(), sigacts_copy(), sigacts_share(), and sigacts_shared().
- Remove the p_sigignore, p_sigacts, and p_sigcatch macros.
- Add a mutex to struct sigacts that protects all the members of the struct.
- Add sigacts locking.
- Remove Giant from nosys(), kill(), killpg(), and kern_sigaction() now
  that sigacts is locked.
- Several in-kernel functions such as psignal(), tdsignal(), trapsignal(),
  and thread_stopped() are now MP safe.

Reviewed by:	arch@
Approved by:	re (rwatson)
2003-05-13 20:36:02 +00:00
mdodd
232af61924 Provide exec_linux_setregs() to override exec_setregs().
Linux initializes %gs to 0.  Mimic this behavior.

Submitted by:	 Christian Zander <zander@minion.de>
Reviewed by:	 jake
Approved by:	 re
2003-05-11 21:51:11 +00:00
jhb
d5cf4c5275 Prefer the proc lock to sched_lock when testing PS_INMEM now that it is
safe to do so.
2003-04-22 20:01:56 +00:00
jhb
85d7526d96 Synchronize the two linux_clone() implementations which includes a few
minor cleanups in both.
2003-04-18 20:54:41 +00:00
jhb
f6f1e291b9 Don't drop the proc lock just to reacquire it after a few simple assignment
statements.  Just hold the lock the entire time.
2003-04-17 22:18:07 +00:00
jhb
64f102eb0c Sync up with changes to ptrace() and use P_SHOULDSTOP instead of
a duplicate P_TRACED check.

Submitted by:	marcel
2003-04-15 16:29:39 +00:00
jeff
46e6ba39f1 - Move p->p_sigmask to td->td_sigmask. Signal masks will be per thread with
a follow on commit to kern_sig.c
 - signotify() now operates on a thread since unmasked pending signals are
   stored in the thread.
 - PS_NEEDSIGCHK moves to TDF_NEEDSIGCHK.
2003-03-31 22:49:17 +00:00
jeff
4a3718fb25 - Change trapsignal() to accept a thread and not a proc.
- Change all consumers to pass in a thread.

Right now this does not cause any functional changes but it will be important
later when signals can be delivered to specific threads.
2003-03-31 22:02:38 +00:00
jhb
fdc61a3a24 Add missing includes from previous commit.
Reported by:	des
2003-03-27 18:18:35 +00:00
jhb
72a1a2619c Add a cleanup function to destroy the osname_lock and call it on module
unload.

Submitted by:	gallatin
Reported by:	Martin Karlsson <mk-freebsd@bredband.net>
2003-03-26 18:29:44 +00:00