Commit Graph

72 Commits

Author SHA1 Message Date
agc aad01611e7 Move UCB-licensed code from 4-clause to 3-clause licence.
Patches provided by Joel Baker in PR 22364, verified by myself.
2003-08-07 16:26:28 +00:00
dsl cfb2dd92f0 Fix (and simplify) interaction between check_pty() and pty_maxptys().
Lock setting/clearing of tp->t_oproc to guarantee concurrent opens can't
both suceed and that code in tty.c can't get a NULL t_oproc if the value
is re-read after being checked.
There are still MP issues with pt_flags, pt_send and pt_unctl.
Maybe problems that require TTY_LOCK() to be taken before calling std tty
functions.
2003-07-23 13:10:28 +00:00
fvdl d5aece61d6 Back out the lwp/ktrace changes. They contained a lot of colateral damage,
and need to be examined and discussed more.
2003-06-29 22:28:00 +00:00
darrenr 960df3c8d1 Pass lwp pointers throughtout the kernel, as required, so that the lwpid can
be inserted into ktrace records.  The general change has been to replace
"struct proc *" with "struct lwp *" in various function prototypes, pass
the lwp through and use l_proc to get the process pointer when needed.

Bump the kernel rev up to 1.6V
2003-06-28 14:20:43 +00:00
pk bb52ffdf64 Make the tty subsystem MP-safe..
..as far as mere mortals are able to, since this code illustrates the finest
points that Italian haute cuisine has to offer.
2003-02-05 15:49:02 +00:00
simonb 1354fecf22 b_to_q() and q_to_b() take a "u_char *" argument, so use a u_char array
in one place, and don't cast a "u_char *" to a "char *" in the q_to_b()
call(!) in another.
2003-01-19 23:11:46 +00:00
christos e22906f6d0 si_ -> sel_ to avoid conflicts with siginfo. 2002-11-26 18:44:34 +00:00
jdolecek e0cc03a09b merge kqueue branch into -current
kqueue provides a stateful and efficient event notification framework
currently supported events include socket, file, directory, fifo,
pipe, tty and device changes, and monitoring of processes and signals

kqueue is supported by all writable filesystems in NetBSD tree
(with exception of Coda) and all device drivers supporting poll(2)

based on work done by Jonathan Lemon for FreeBSD
initial NetBSD port done by Luke Mewburn and Jason Thorpe
2002-10-23 09:10:23 +00:00
jdolecek c0f46c2a40 check_pty(): make sure to zero the newly allocated pt_softc structure 2002-09-22 18:13:38 +00:00
gehenna 77a6b82b27 Merge the gehenna-devsw branch into the trunk.
This merge changes the device switch tables from static array to
dynamically generated by config(8).

- All device switches is defined as a constant structure in device drivers.

- The new grammer ``device-major'' is introduced to ``files''.

	device-major <prefix> char <num> [block <num>] [<rules>]

- All device major numbers must be listed up in port dependent majors.<arch>
  by using this grammer.

- Added the new naming convention.
  The name of the device switch must be <prefix>_[bc]devsw for auto-generation
  of device switch tables.

- The backward compatibility of loading block/character device
  switch by LKM framework is broken. This is necessary to convert
  from block/character device major to device name in runtime and vice versa.

- The restriction to assign device major by LKM is completely removed.
  We don't need to reserve LKM entries for dynamic loading of device switch.

- In compile time, device major numbers list is packed into the kernel and
  the LKM framework will refer it to assign device major number dynamically.
2002-09-06 13:18:43 +00:00
itohy ab5fe01c20 Print ttyinfo *before* (not after) sending SIGINFO to processes.
This generates more useful information of a process who catches SIGINFO,
rather than always printing "runnable" (the process is marked runnable
because of the signal).
Inspired by the behavior of BSD/OS.
2002-03-25 04:26:43 +00:00
atatat 31144d9976 Convert ioctl code to use EPASSTHROUGH instead of -1 or ENOTTY for
indicating an unhandled "command".  ERESTART is -1, which can lead to
confusion.  ERESTART has been moved to -3 and EPASSTHROUGH has been
placed at -4.  No ioctl code should now return -1 anywhere.  The
ioctl() system call is now properly restartable.
2002-03-17 19:40:26 +00:00
mrg d3b3f3e560 move the COMPAT_SUNOS TIOCGPGRP handling in the compat sunos code proper.
this is the final fix needed for it to run properly as an LKM.  no more
COMPAT_SUNOS hacks around the tree!
2002-03-02 12:30:43 +00:00
christos 8ec87caa7f ICANON is in lflags, by Neelkanth Natu 2002-02-17 19:34:42 +00:00
tls eeda20f137 Kick DEFAULT_MAXPTYS from 256 to 992 2002-02-02 07:18:55 +00:00
lukem adc783d537 add RCSIDs 2001-11-12 15:25:01 +00:00
scw 2963ff5c58 Add `l_poll' to `struct linesw' and provide an xxxpoll() entry point
in each tty driver to indirect through it.

This allows tty line-disciplines to handle poll(2) system calls.
2001-05-02 10:32:08 +00:00
chs fa19fe52db adjust the spinlock macros in the non-MULTIPROCESSOR, non-LOCKDEBUG case
so that gcc will think that static spinlock are used.
this allows us to remove the ugly conditionalization of
static spinlock declarations.
2000-11-24 03:59:07 +00:00
enami 29f1bcd8e2 Unlock mutex before jumping off from the critical region instead of
testing if locked.
2000-11-21 03:53:27 +00:00
veego a174b8a595 simple_lock_held is only defined when you use LOCKDEBUG.
Put it for now in an ifdef LOCKDEBUG.
2000-11-20 06:36:02 +00:00
jdolecek 26fe6166ed check_pty(): simple_unlock() might have been called even if the lock was
not locked previously in some cases; unlock only if the lock is held
2000-11-19 22:34:56 +00:00
jdolecek e8e4da6b87 add new function sigismasked(), which checks whether passed signal
is ignored or masked by the process, and use it appropriately
instead of directly checking p->p_sigmask and p->p_sigignore
2000-11-05 15:37:09 +00:00
eeh d85adca51f Make line disciplines modular so they can be added or removed dynamically. 2000-11-01 23:51:38 +00:00
pk 13275642e0 make compile #if LOCKDEBUG is on. 2000-09-11 13:51:29 +00:00
jdolecek 9bdbbbc834 change DEFAULT_MAXPTYS to 256
make all local variables static
use simplelocks - we really need only mutexes, full locks are not necessary
update couple of comments to be more accurate

add function pty_maxptys(), which provides a safe way to get&set maxptys - this
	also supports setting maxptys to lower than current value, if the
	value is lower or equal current number of ptys
2000-09-10 17:26:45 +00:00
jdolecek 1ef0c139f9 allocate pty kernel structures on demand at run-time - this allows
to support arbitrary number of ptys without need of kernel recompile
(the extra device special files in /dev/ still need to be created, of course)

upper limit of supported ptys is controlled via new sysctl variable
kern.maxptys (KERN_MAXPTYS), which is raise-only and defaults to 512.
2000-09-09 16:42:04 +00:00
mrg a8fc5226d3 fix rev 1.44; make this cast look like:
sig = (int)(long)*(caddr_t *)data;
to *properly* dereference the passed data.  this makes signals on
ptys actually *work* on the sparc64 port.  from mycroft.


XXX: the release branch version needs this ASAP as it is probably
unstable on ILP32BE.
2000-07-28 04:31:19 +00:00
mason fa62f74f37 Moving to a default of 64 PTYs. 2000-07-27 17:32:11 +00:00
fvdl 9067306192 Don't use *(unsigned int *)data to get the signal number out; this will
fail on LP64-BE systems. Also, fix up the invalid signal number check.
2000-07-14 12:10:58 +00:00
augustss 264f1d27c6 Get rid of register declarations. 2000-03-30 09:27:11 +00:00
mycroft fb526e055c Substantial signal handling changes:
* Increase the size of sigset_t to accomodate 128 signals -- adding new
  versions of sys_setprocmask(), sys_sigaction(), sys_sigpending() and
  sys_sigsuspend() to handle the changed arguments.
* Abstract the guts of sys_sigaltstack(), sys_setprocmask(), sys_sigaction(),
  sys_sigpending() and sys_sigsuspend() into separate functions, and call them
  from all the emulations rather than hard-coding everything.  (Avoids uses
  the stackgap crap for these system calls.)
* Add a new flag (p_checksig) to indicate that a process may have signals
  pending and userret() needs to do the full (slow) check.
* Eliminate SAS_ALTSTACK; it's exactly the inverse of SS_DISABLE.
* Correct emulation bugs with restoring SS_ONSTACK.
* Make the signal mask in the sigcontext always use the emulated mask format.
* Store signals internally in sigaction structures, rather than maintaining a
  bunch of little sigsets for each SA_* bit.
* Keep track of where we put the signal trampoline, rather than figuring it out
  in *_sendsig().
* Issue a warning when a non-emulated sigaction bit is observed.
* Add missing emulated signals, and a native SIGPWR (currently not used).
* Implement the `not reset when caught' semantics for relevant signals.

Note: Only code touched by the i386 port has been modified.  Other ports and
emulations need to be updated.
1998-09-11 12:50:05 +00:00
thorpej 8aee7782f5 defopt COMPAT_SUNOS 1998-06-25 23:40:33 +00:00
mycroft 2ada4b4af1 Replace TS_WOPEN with t_wopen, per mail on tech-kern. 1998-03-21 04:02:47 +00:00
fvdl e5bc90f40c Merge with Lite2 + local changes 1998-03-01 02:20:01 +00:00
mycroft 2bc736661a Implement poll(2). 1996-09-07 12:40:22 +00:00
mycroft af113f915d Use SET(), CLR(), ISSET(). 1996-09-05 15:31:40 +00:00
mycroft b3eac79b64 tty stop functions really should return void, not int, and certainly not both. 1996-09-02 06:43:16 +00:00
pk 947ec65105 sunos_compat: return EIO when TIOCGPGRPing a half-open pty. This is
expected by SunOS pty-allocating programs (telnetd,rlogind,..).
1996-07-02 21:19:02 +00:00
mrg 5583238255 impliment ttylist stats based on disk stats. 1996-05-29 02:02:42 +00:00
christos 87a65718ea Eliminate kern_conf.h 1996-03-30 22:24:38 +00:00
christos 09afd77655 More proto fixes 1996-02-09 18:59:18 +00:00
christos 8a5b1b92e2 First pass at prototyping 1996-02-04 02:15:01 +00:00
mycroft 2dd293d3c3 Add hooks for COMPAT_FREEBSD, from Noriyuki Soda. 1995-10-10 01:26:36 +00:00
mycroft b92e5976ff Rename pttty() to ptytty() to mimic ptyioctl(). 1995-04-19 22:33:56 +00:00
mycroft cdd1a8eb54 Fix typo. 1995-04-19 18:58:14 +00:00
mycroft 7aaa443e99 Implement pttty(), and rename pt_ioctl to pt_softc. 1995-04-19 18:50:21 +00:00
mycroft 790aa66ac5 Remove extra arg to ptcopen(). 1994-12-14 19:45:30 +00:00
mycroft d8d7490080 Fix compiler warning. 1994-12-13 19:59:25 +00:00
cgd 6ac2bbfc35 be more careful with types, also pull in headers where necessary. 1994-10-30 21:43:03 +00:00
cgd cf92afd66e New RCS ID's, take two. they're more aesthecially pleasant, and use 'NetBSD' 1994-06-29 06:29:24 +00:00