Commit Graph

166 Commits

Author SHA1 Message Date
John Baldwin
fe8cdcae87 - Replace inline implementations of sigprocmask() with calls to
kern_sigprocmask() in the various binary compatibility emulators.
- Replace calls to sigsuspend(), sigaltstack(), sigaction(), and
  sigprocmask() that used the stackgap with calls to the corresponding
  kern_sig*() functions instead without using the stackgap.
2003-04-22 18:23:49 +00:00
John Baldwin
4cac73c759 The proc lock is sufficient to test p_state against PRS_ZOMBIE, so don't
needlessly lock sched_lock.
2003-04-17 22:09:08 +00:00
John Baldwin
8804bf6b03 Use local struct proc variables to reduce repeated td->td_proc dereferences
and improve readability.
2003-04-17 22:02:47 +00:00
Jeff Roberson
4093529dee - 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
John Baldwin
43cf129c99 Sync up linux and svr compat elf fixup functions for exec(). These
functions are now all basically identical except that alpha linux uses
Elf64 arguments and svr4 and i386 linux use Elf32.  The fixups include
changing the first argument to be a register_t ** to match the prototype
for fixup functions, asserting that the process in the image_params struct
is always curproc and removing unnecessary locking to read credentials as a
result, and a few style fixes.
2003-03-21 19:49:34 +00:00
Dag-Erling Smørgrav
521f364b80 More low-hanging fruit: kill caddr_t in calls to wakeup(9) / [mt]sleep(9). 2003-03-02 16:54:40 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Alfred Perlstein
8deebb0160 Consolidate MIN/MAX macros into one place (param.h).
Submitted by: Hiten Pandya <hiten@unixdaemons.com>
2003-02-02 13:17:30 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Matthew Dillon
de6edd1bd9 Add missing #include
Submitted by:	"Sam Leffler" <sam@errno.com>
2003-01-14 21:31:31 +00:00
Matthew Dillon
1c33791c80 Apply bandaid to bring svr4_sys_waitsys() in line with exit1(). This
routine really need to be gutted and merged with exit1().

Reviewed by:	jhb
2003-01-13 22:44:23 +00:00
Matthew Dillon
48e3128b34 Bow to the whining masses and change a union back into void *. Retain
removal of unnecessary casts and throw in some minor cleanups to see if
anyone complains, just for the hell of it.
2003-01-13 00:33:17 +00:00
Matthew Dillon
cd72f2180b Change struct file f_data to un_data, a union of the correct struct
pointer types, and remove a huge number of casts from code using it.

Change struct xfile xf_data to xun_data (ABI is still compatible).

If we need to add a #define for f_data and xf_data we can, but I don't
think it will be necessary.  There are no operational changes in this
commit.
2003-01-12 01:37:13 +00:00
Jeffrey Hsu
b30a244c34 SMP locking for ifnet list. 2002-12-22 05:35:03 +00:00
Alfred Perlstein
d1e405c5ce SCARGS removal take II. 2002-12-14 01:56:26 +00:00
Alfred Perlstein
bc9e75d7ca Backout removal SCARGS, the code freeze is only "selectively" over. 2002-12-13 22:41:47 +00:00
Alfred Perlstein
0bbe7292e1 Remove SCARGS.
Reviewed by: md5
2002-12-13 22:27:25 +00:00
Robert Drehmel
f9067a4978 Replace the conventional usage of strncpy() by using strlcpy(). 2002-10-17 22:27:21 +00:00
Robert Watson
b371c939ce Integrate mac_check_socket_send() and mac_check_socket_receive()
checks from the MAC tree: allow policies to perform access control
for the ability of a process to send and receive data via a socket.
At some point, we might also pass in additional address information
if an explicit address is requested on send.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2002-10-06 14:39:15 +00:00
Juli Mallett
1d9c56964d Back our kernel support for reliable signal queues.
Requested by:	rwatson, phk, and many others
2002-10-01 17:15:53 +00:00
Juli Mallett
1226f694e6 First half of implementation of ksiginfo, signal queues, and such. This
gets signals operating based on a TailQ, and is good enough to run X11,
GNOME, and do job control.  There are some intricate parts which could be
more refined to match the sigset_t versions, but those require further
evaluation of directions in which our signal system can expand and contract
to fit our needs.

After this has been in the tree for a while, I will make in kernel API
changes, most notably to trapsignal(9) and sendsig(9), to use ksiginfo
more robustly, such that we can actually pass information with our
(queued) signals to the userland.  That will also result in using a
struct ksiginfo pointer, rather than a signal number, in a lot of
kern_sig.c, to refer to an individual pending signal queue member, but
right now there is no defined behaviour for such.

CODAFS is unfinished in this regard because the logic is unclear in
some places.

Sponsored by:	New Gold Technology
Reviewed by:	bde, tjr, jake [an older version, logic similar]
2002-09-30 20:20:22 +00:00
Jonathan Mini
044af7c357 Back out last commit. Linux uses the old 4.3BSD sockaddr format. 2002-09-24 07:03:01 +00:00
John Baldwin
bb25b2dda9 Ok, make this compile for real this time. recvfrom_args doesn't have a
fromlen member, instead it has a fromlenaddr pointer member.  Set it to
NULL.
2002-09-23 21:05:41 +00:00
John Baldwin
1d26b5606f Use correct variable name so that previous commit actually compiles. 2002-09-23 20:58:59 +00:00
Jonathan Mini
d7f94a7a0e Don't use compatability syscall wrappers in emulation code.
This is needed for the COMPAT_FREEBSD3 option split.

Reviewed by:	alfred, jake
2002-09-23 06:17:54 +00:00
Jake Burkholder
05ba50f522 Use the fields in the sysentvec and in the vm map header in place of the
constants VM_MIN_ADDRESS, VM_MAXUSER_ADDRESS, USRSTACK and PS_STRINGS.
This is mainly so that they can be variable even for the native abi, based
on different machine types.  Get stack protections from the sysentvec too.
This makes it trivial to map the stack non-executable for certain abis, on
machines that support it.
2002-09-21 22:07:17 +00:00
Jake Burkholder
f36ba45234 Added fields for VM_MIN_ADDRESS, PS_STRINGS and stack protections to
sysentvec.  Initialized all fields of all sysentvecs, which will allow
them to be used instead of constants in more places.  Provided stack
fixup routines for emulations that previously used the default.
2002-09-01 21:41:24 +00:00
Jake Burkholder
d920042a00 Make this compile. 2002-08-31 19:33:59 +00:00
Matthew Dillon
cac4515267 Implement data, text, and vmem limit checking in the elf loader and svr4
compat code.  Clean up accounting for multiple segments.  Part 1/2.

Submitted by:	Andrey Alekseyev <uitm@zenon.net> (with some modifications)
MFC after:	3 days
2002-08-30 18:09:46 +00:00
Robert Watson
d49fa1ca6e In continuation of early fileop credential changes, modify fo_ioctl() to
accept an 'active_cred' argument reflecting the credential of the thread
initiating the ioctl operation.

- Change fo_ioctl() to accept active_cred; change consumers of the
  fo_ioctl() interface to generally pass active_cred from td->td_ucred.
- In fifofs, initialize filetmp.f_cred to ap->a_cred so that the
  invocations of soo_ioctl() are provided access to the calling f_cred.
  Pass ap->a_td->td_ucred as the active_cred, but note that this is
  required because we don't yet distinguish file_cred and active_cred
  in invoking VOP's.
- Update kqueue_ioctl() for its new argument.
- Update pipe_ioctl() for its new argument, pass active_cred rather
  than td_ucred to MAC for authorization.
- Update soo_ioctl() for its new argument.
- Update vn_ioctl() for its new argument, use active_cred rather than
  td->td_ucred to authorize VOP_IOCTL() and the associated VOP_GETATTR().

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-08-17 02:36:16 +00:00
Robert Watson
6835e7427c On MAC check failure for readdir, use 'goto out' to use the common exit
handling, rather than returning directly to prevent leaking of vnode
reference/lock.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-08-15 15:46:10 +00:00
Jeff Roberson
08d2496abf - Add the missing td argument to vn_lock that I missed in my last commit. 2002-08-13 20:34:30 +00:00
Jeff Roberson
619eb6e579 - Hold the vnode lock throughout execve.
- Set VV_TEXT in the top level execve code.
 - Fixup the image activators to deal with the newly locked vnode.
2002-08-13 06:55:28 +00:00
Robert Watson
7d834ce78d Enforce MAC policies for the locally implemented vnode services in
SVR4 emulation relating to readdir() and fd_revoke().  All other
services appear to be implemented by simply wrapping existing
FreeBSD native system call implementations, so don't require local
instrumentation in the emulator module.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, NAI Labs
2002-08-12 01:42:21 +00:00
Jeff Roberson
e6e370a7fe - Replace v_flag with v_iflag and v_vflag
- v_vflag is protected by the vnode lock and is used when synchronization
   with VOP calls is needed.
 - v_iflag is protected by interlock and is used for dealing with vnode
   management issues.  These flags include X/O LOCK, FREE, DOOMED, etc.
 - All accesses to v_iflag and v_vflag have either been locked or marked with
   mp_fixme's.
 - Many ASSERT_VOP_LOCKED calls have been added where the locking was not
   clear.
 - Many functions in vfs_subr.c were restructured to provide for stronger
   locking.

Idea stolen from:	BSD/OS
2002-08-04 10:29:36 +00:00
Peter Wemm
3ebc124838 Infrastructure tweaks to allow having both an Elf32 and an Elf64 executable
handler in the kernel at the same time.  Also, allow for the
exec_new_vmspace() code to build a different sized vmspace depending on
the executable environment.  This is a big help for execing i386 binaries
on ia64.   The ELF exec code grows the ability to map partial pages when
there is a page size difference, eg: emulating 4K pages on 8K or 16K
hardware pages.

Flesh out the i386 emulation support for ia64.  At this point, the only
binary that I know of that fails is cvsup, because the cvsup runtime
tries to execute code in pages not marked executable.

Obtained from:  dfr (mostly, many tweaks from me).
2002-07-20 02:56:12 +00:00
Robert Drehmel
6f2df7152b The comment marked with XXX was right: emulate SVR4 for
ELF binaries branded with ELFOSABI_SYSV, this is reported
to work and brandelf(1) puts this type into files if "SVR4"
was specified.
2002-07-09 14:59:27 +00:00
Julian Elischer
e602ba25fd Part 1 of KSE-III
The ability to schedule multiple threads per process
(one one cpu) by making ALL system calls optionally asynchronous.
to come: ia64 and power-pc patches, patches for gdb, test program (in tools)

Reviewed by:	Almost everyone who counts
	(at various times, peter, jhb, matt, alfred, mini, bernd,
	and a cast of thousands)

	NOTE: this is still Beta code, and contains lots of debugging stuff.
	expect slight instability in signals..
2002-06-29 17:26:22 +00:00
Alfred Perlstein
85145119ed catch up with ktrace changes, KTRPOINT takes a 'struct thread' not
'struct proc' now.
2002-06-11 21:14:02 +00:00
John Baldwin
60a9bb197d Catch up to changes in ktrace API. 2002-06-07 05:37:18 +00:00
Jens Schweikhardt
21dc7d4f57 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
Seigo Tanimura
4cc20ab1f0 Back out my lats commit of locking down a socket, it conflicts with hsu's work.
Requested by:	hsu
2002-05-31 11:52:35 +00:00
Alfred Perlstein
524683999f correct commented out preprocessor test for i386 to __i386__ 2002-05-30 07:28:43 +00:00
Bruce Evans
5cc5b1d344 Fixed a printf format error. It was old and should have been detected by
gcc-2.9x, but somehow wasn't fixed already.
2002-05-25 10:48:03 +00:00
Seigo Tanimura
243917fe3b Lock down a socket, milestone 1.
o Add a mutex (sb_mtx) to struct sockbuf. This protects the data in a
  socket buffer. The mutex in the receive buffer also protects the data
  in struct socket.

o Determine the lock strategy for each members in struct socket.

o Lock down the following members:

  - so_count
  - so_options
  - so_linger
  - so_state

o Remove *_locked() socket APIs.  Make the following socket APIs
  touching the members above now require a locked socket:

 - sodisconnect()
 - soisconnected()
 - soisconnecting()
 - soisdisconnected()
 - soisdisconnecting()
 - sofree()
 - soref()
 - sorele()
 - sorwakeup()
 - sotryfree()
 - sowakeup()
 - sowwakeup()

Reviewed by:	alfred
2002-05-20 05:41:09 +00:00
John Baldwin
ea97757a54 - Lock proctree_lock instead of pgrpsess_lock.
- Exclusively lock proctree_lock while calling leavepgrp().
2002-04-16 17:04:21 +00:00
John Baldwin
8e4357a4cb Use proc lock to protect p_ucred pointer while we deference it to read a
few values.
2002-04-11 21:00:38 +00:00
Bruce Evans
79065dba2a Moved signal handling and rescheduling from userret() to ast() so that
they aren't in the usual path of execution for syscalls and traps.
The main complication for this is that we have to set flags to control
ast() everywhere that changes the signal mask.

Avoid locking in userret() in most of the remaining cases.

Submitted by:	luoqi (first part only, long ago, reorganized by me)
Reminded by:	dillon
2002-04-04 17:49:48 +00:00
John Baldwin
44731cab3b Change the suser() API to take advantage of td_ucred as well as do a
general cleanup of the API.  The entire API now consists of two functions
similar to the pre-KSE API.  The suser() function takes a thread pointer
as its only argument.  The td_ucred member of this thread must be valid
so the only valid thread pointers are curthread and a few kernel threads
such as thread0.  The suser_cred() function takes a pointer to a struct
ucred as its first argument and an integer flag as its second argument.
The flag is currently only used for the PRISON_ROOT flag.

Discussed on:	smp@
2002-04-01 21:31:13 +00:00
Alfred Perlstein
8899023f66 Make the reference counting of 'struct pargs' SMP safe.
There is still some locations where the PROC lock should be held
in order to prevent inconsistent views from outside (like the
proc->p_fd fix for kern/vfs_syscalls.c:checkdirs()) that can be
fixed later.

Submitted by: Jonathan Mini <mini@haikugeek.com>
2002-03-27 21:36:18 +00:00