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* Move SIGUSR1 notification as late as possible.Adam Jackson2017-03-211-38/+49
| | | | | | | | | | | | | | | | | | commit f01e149d1af14ef9ee0e8a6743ab6a08f3bb677c Author: Adam Jackson <ajax@redhat.com> Date: Thu Nov 1 15:41:11 2007 -0400 Move SIGUSR1 notification as late as possible. If we inherited a signal mask from the parent process that ignores SIGUSR1, then we will send SIGUSR1 to the parent to indicate when we're ready to accept connections. Unfortunately, we send this notification way too early, right after creating the sockets rather than just before entering the main loop. Move it to just before Dispatch() so we're not lying quite so much. Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* dix: Extend initial connection handshake for forwarding proxiesAdam Jackson2017-03-211-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | commit 78fa121f4097d29458e5453c13473595df06e26e Author: Adam Jackson <ajax@redhat.com> Date: Fri Jun 17 13:43:38 2011 -0400 dix: Extend initial connection handshake for forwarding proxies Forwarding proxies like sshd will appear to be local, even though they aren't really. This leads to weird behaviour for extensions that truly require running under the same OS services as the client, like MIT-SHM and DRI2. Add two new legal values for the initial connection's byteOrder field, 'r' and 'R'. These act like 'l' and 'B' respectively, but have the side effect of forcing the client to be treated as non-local. Forwarding proxies should attempt to munge the first packet of the connection accordingly; older servers will reject connections thusly munged, so the proxy should fall back to passthrough if the munged connection attempt fails. Reviewed-by: Daniel Stone <daniel@fooishbar.org> Signed-off-by: Adam Jackson <ajax@redhat.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* dix: Pull client-is-local flag up to the ClientRecAdam Jackson2017-03-213-10/+2
| | | | | | | | | | | | | | | Backported from X.org commit ff8e3ad8074cd2c8bed49b39c40c2b4892118270 Author: Adam Jackson <ajax@redhat.com> Date: Thu Sep 20 13:16:59 2012 -0400 dix: Pull client-is-local flag up to the ClientRec Reviewed-by: Daniel Stone <daniel@fooishbar.org> Signed-off-by: Adam Jackson <ajax@redhat.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: always check if client is local when connection is acceptedPauli Nieminen2017-03-213-3/+19
| | | | | | | | | | | | | | | | | | | Backported from X.org: commit 2d67ada3c4079a11c52024a9c3d4138becca5171 Author: Pauli Nieminen <ext-pauli.nieminen@nokia.com> Date: Thu Dec 30 19:19:43 2010 +0200 os: always check if client is local when connection is accepted LocalClient is used for all DRI2 requests that makes it frequently called function. Querying if connection is local or not takes 10-15us (on ARM) depending on malloc speed. Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com> Reviewed-by: Daniel Stone <daniel@fooishbar.org> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Add facilities for client ID tracking.Rami Ylimäki2017-03-212-0/+399
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | commit 6d6d4cb6043905d850834946e9bfc526ed5a9ef7 Author: Matthieu Herrb <matthieu.herrb@laas.fr> Date: Mon Jan 2 13:23:59 2012 +0000 Add OpenBSD support to DetermineClientCmd() Uses kvm_getargv() from libkvm. Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> commit cfc4c3d7fa8bd4da4c08b2ab8e6f85435f75353a Author: Alan Coopersmith <alan.coopersmith@oracle.com> Date: Sat Dec 24 10:00:56 2011 -0800 Add Solaris support to DetermineClientCmd Uses /proc/pid/psinfo to read command & partial arguments. Moves cmdsize & argsize variables into non-Solaris #else clause to avoid unused variable warnings. Fixes format mismatch errors when building with DEBUG defined on a 64-bit platform (where Mask is defined as CARD32). Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi> Signed-off-by: Keith Packard <keithp@keithp.com> commit 780133f9ae7fada462714b47e79d26075bbd9abe Author: Alan Coopersmith <alan.coopersmith@oracle.com> Date: Fri Oct 28 21:29:50 2011 -0700 Convert DetermineClientCmd to use strdup instead of malloc+strncpy *cmdname is initialized to NULL earlier in the function, so it's okay to overwrite it with NULL if strdup fails, don't need that extra check. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com> commit 2ef4ff45ef1fcfc4967ebe3d550408769e5f6500 Author: Erkki Seppälä <erkki.seppala@vincit.fi> Date: Fri Mar 25 10:38:23 2011 +0200 os/client: Prevent rare fd leak in DetermineClientPid DetermineClientPid didn't close file descriptor if read on /proc/pid/cmdline failed. Adjusted the code to disregard the close return value and perform the return after that, if the read failed or returned EOF. Signed-off-by: Mark Kettenis <mark.kettenis@xs4all.nl> Signed-off-by: Erkki Seppälä <erkki.seppala@vincit.fi> Reviewed-by: Rami Ylimäki <rami.ylimaki@vincit.fi> Signed-off-by: Keith Packard <keithp@keithp.com> commit 1e933665bef26c74196bb7c59910e6a78bcacf0e Author: Rami Ylimäki <rami.ylimaki@vincit.fi> Date: Wed Dec 22 16:51:09 2010 +0200 os: Add facilities for client ID tracking. An interface is provided for figuring out the PID and process name of a client. Make some existing functionality from SELinux and IA extensions available for general use. Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi> Reviewed-by: Tiago Vignatti <tiago.vignatti@nokia.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* dix/os: backport various signal handling and smart scheduler changes from X.orgMike Gabriel2017-03-214-105/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit 6178b1c91cfc9e860914acc6f0be2f2d2e07a124 Author: Adam Jackson <ajax@redhat.com> Date: Tue Jun 7 15:52:11 2016 -0400 dix: Use OsSignal() not signal() As the man page for the latter states: The effects of signal() in a multithreaded process are unspecified. We already have an interface to call sigaction() instead, use it. Signed-off-by: Adam Jackson <ajax@redhat.com> Reviewed-by: Keith Packard <keithp@keithp.com> commit e10ba9e4b52269b2ac75c4802dce4ca47d169657 Author: Keith Packard <keithp@keithp.com> Date: Wed Nov 11 22:02:01 2015 -0800 Remove non-smart scheduler. Don't require setitimer. This allows the server to call GetTimeInMillis() after each request is processed to avoid needing setitimer. -dumbSched now turns off the setitimer. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> commit 1f915e8b524dd02011158aa038935970684c7630 Author: Daniel Drake <drake@endlessm.com> Date: Wed May 20 13:16:12 2015 -0600 Keep SIGALRM restart flag after Popen Commit 94ab7455 added SA_RESTART to the SIGALRM handler. However, the Popen code tears down and recreates the SIGALRM handler via OsSignal(), and this flag is dropped at this time. Clean the code to use just a single codepath for creating this signal handler, always applying SA_RESTART. [ajax: Fixed commit id] Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Daniel Drake <drake@endlessm.com> commit 94ab7455abc213fc96760e29ab2e943ec682fb22 Author: Daniel Drake <drake@endlessm.com> Date: Tue May 12 16:39:22 2015 -0600 Allow system call restarts upon signal interruption The X server frequently deals with SIGIO and SIGALRM interruptions. If process execution is inside certain blocking system calls when these signals arrive, e.g. with the kernel blocked on a contended semaphore, the system calls will be interrupted. Some system calls are automatically restartable (the kernel re-executes them with the same parameters once the signal handler returns) but only if the signal handler allows it. Set SA_RESTART on the signal handlers to enable this convenient behaviour. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Daniel Drake <drake@endlessm.com> commit a6c71ce5d2d2fe89e07a2ef5041c915acc3dc686 Author: Tiago Vignatti <tiago.vignatti@nokia.com> Date: Mon Mar 28 19:21:28 2011 +0300 os: fix memory and fd leaks in Popen Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Reviewed-by: Nicolas Peninguy <nico@lostgeeks.org> commit c9051b684b524549eab6d5b88ee3e195a6f6fbe8 Author: Alan Coopersmith <alan.coopersmith@sun.com> Date: Wed Nov 5 18:25:57 2008 -0800 Use OsSignal in Popen/Pclose to avoid SysV signal() stupidity commit 0e9ef65fa583bf2393dd0fda82df6f092387b425 Author: Keith Packard <keithp@koto.keithp.com> Date: Wed Nov 7 16:33:10 2007 -0800 Don't frob timers unless SmartSchedule is running commit 2338d5c9914e2a43c3a4f7ee0f4355ad0a1ad9e7 Author: Arjan van de Ven <arjan@linux.intel.com> Date: Sun Oct 28 09:37:52 2007 +0100 reduce wakeups from smart scheduler The smart scheduler itimer currently always fires after each request (which in turn causes the CPU to wake out of idle, burning precious power). Rather than doing this, just stop the timer before going into the select() portion of the WaitFor loop. It's a cheap system call, and it will only get called if there's no more commands batched up from the active fd. This change also allows some of the functions to be simplified; setitimer() will only fail if it's passed invalid data, and we don't do that... so make it void and remove all the conditional code that deals with failure. The change also allows us to remove a few variables that were used for housekeeping between the signal handler and the main loop. Signed-off-by: Keith Packard <keithp@koto.keithp.com> **Note**: The above change also required ABI changes in hw/nxagent/. commit abe0a51f3f790f8c055289465e130177c4b647cc Author: Ben Byer <bbyer@bbyer.apple.com> Date: Fri Sep 21 17:07:36 2007 -0700 So, like, checking return codes of system calls (signal, etc) is good. Also, only restore an old signal handler if one was actually set (prevents the server from dying on OS X). commit 6da39c67905500ab2db00a45cda4a9f756cdde96 Author: Eric Anholt <eric@anholt.net> Date: Wed Sep 12 13:23:13 2007 +0000 Fix build on FreeBSD after Popen changes. commit a5b8053606d6e786cdcf6734f271acc05f9cc588 Author: Adam Jackson <ajax@benzedrine.nwnk.net> Date: Tue Sep 11 11:37:06 2007 -0400 Ignore - not just block - SIGALRM around Popen()/Pclose(). Because our "popen" implementation uses stdio, and because nobody's stdio library is capable of surviving signals, we need to make absolutely sure that we hide the SIGALRM from the smart scheduler. Otherwise, when you open a menu in openoffice, and it recompiles XKB to deal with the accelerators, and you popen xkbcomp because we suck, then the scheduler will tell you you're taking forever doing something stupid, and the wait() code will get confused, and input will hang and your CPU usage slams to 100%. Down, not across. Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* dix/os: Merge priority computation into SmartScheduleClientKeith Packard2017-03-211-37/+4
| | | | | | | | | | | | | | | | | | | Backported from X.org: commit 7762a602c1dfdd8cfcf2b8c2281cf4d683d05216 Author: Keith Packard <keithp@keithp.com> Date: Thu May 19 15:05:55 2016 -0700 dix/os: Merge priority computation into SmartScheduleClient Instead of having scheduling done in two places (one in WaitForSomething, and the other in SmartScheduleClient), just stick all of the scheduling in SmartScheduleClient. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Fix a memory leakPauli Nieminen2017-03-211-4/+6
| | | | | | | | | | | | | | | | Backported from X.org (+ coding style fixes in other free() calls): commit 617b7d22115ccaaaa7ec69c99885054d33a3bc37 Author: Pauli Nieminen <ext-pauli.nieminen@nokia.com> Date: Thu Dec 30 19:19:42 2010 +0200 os: Fix a memory leak Signed-off-by: Pauli Nieminen <ext-pauli.nieminen@nokia.com> Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Daniel Stone <daniel@fooishbar.org> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Rework local client id finding code to be more uniformAlan Coopersmith2017-03-213-69/+142
| | | | | | | | | | | | | | | | | | | | | Backport of X.org commit: commit 2d93e69690d2c5d4a89a795ede6423796528e5df Author: Alan Coopersmith <alan.coopersmith@sun.com> Date: Thu Sep 27 16:47:06 2007 -0700 Rework local client id finding code to be more uniform Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de> Note: This commit also switches client_uid_string's size from 32 to 64 chars, as found in this X.org commit (spotted by Mihai Moldovan during code review): commit a7b944f0d96c3e0e15e75378a04def1ac96089fb Author: Alan Coopersmith <alan.coopersmith@sun.com> Date: Wed Nov 1 16:17:49 2006 -0800 If getpeerucred() is available, include pid & zoneid in audit messages too
* AUDIT messages should contain uid for local accesses (X.org bug #1997)Alan Coopersmith2017-03-211-5/+16
| | | | | | | | | | commit fbfb35189ef6666707097704b43e052cb2f919ae Author: Alan Coopersmith <alan.coopersmith@sun.com> Date: Wed Nov 1 15:11:48 2006 -0800 Bug #1997: AUDIT messages should contain uid for local accesses <https://bugs.freedesktop.org/show_bug.cgi?id=1997>
* LBX clean-up: Drop forgotten passage in Xserver/os/connection.c.Mike Gabriel2017-03-211-4/+0
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* Xserver/os/: Drop not-used-anymore MNX_TCPCONN macro.Mike Gabriel2017-03-212-10/+9
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* Xserver/os/Imakefile: Introduce the NULL variable and line-wrap various ↵Mike Gabriel2017-03-211-32/+91
| | | | variable definitions for the sake of better readability.
* Don't crash on unconfigured interfaces. (X.org bug #5218, Andrei Barbu)Adam Jackson2017-03-201-0/+2
| | | | | | | | | | commit 9d62d1e6903ccc095f784279a699b3f40a8f0cf8 Author: Adam Jackson <ajax@nwnk.net> Date: Sat Jan 7 00:45:17 2006 +0000 Bug #5218: Don't crash on unconfigured interfaces. (Andrei Barbu) Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Set padding bytes to 0 in WriteToClientAlan Coopersmith2017-03-201-1/+5
| | | | | | | | | | | | | | | | | commit bed610fcae41ddfe21fa9acde599b17d1d15f5d1 Author: Alan Coopersmith <alan.coopersmith@oracle.com> Date: Mon Jul 9 19:12:44 2012 -0700 Set padding bytes to 0 in WriteToClient Clear them out when needed instead of leaving whatever values were present in previously sent messages. Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> Reviewed-by: Keith Packard <keithp@keithp.com> Tested-by: Daniel Stone <daniel@fooishbar.org> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Return BadLength instead of disconnecting BigReq clients (#4565)Aaron Plattner2017-03-202-3/+41
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit 67c66606c760c263d7a4c2d1bba43ed6225a4e7c Author: Robert Morell <rmorell@nvidia.com> Date: Thu May 9 13:09:02 2013 -0700 os: Reset input buffer's 'ignoreBytes' field If a client sends a request larger than maxBigRequestSize, the server is supposed to ignore it. Before commit cf88363d, the server would simply disconnect the client. After that commit, it attempts to gracefully ignore the request by remembering how long the client specified the request to be, and ignoring that many bytes. However, if a client sends a BigReq header with a large size and disconnects before actually sending the rest of the specified request, the server will reuse the ConnectionInput buffer without resetting the ignoreBytes field. This makes the server ignore new X clients' requests. This fixes that behavior by resetting the ignoreBytes field when putting the ConnectionInput buffer back on the FreeInputs list. Signed-off-by: Robert Morell <rmorell@nvidia.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> commit c80c41767eb101e9dbd8393d8cca7764b4e248a4 Author: Aaron Plattner <aplattner@nvidia.com> Date: Mon Oct 25 22:01:32 2010 -0700 os: Fix BigReq ignoring when another request is pending Commit cf88363db0ebb42df7cc286b85d30d7898aea840 fixed the handling of BigReq requests that are way too large and handles the case where the read() syscall returns a short read. However, it neglected to handle the case where it returns a long read, which happens when the client has another request in the queue after the bogus large one. Handle the long read case by subtracting the smaller of 'needed' and 'gotnow' from oci->ignoreBytes. If needed < gotnow, simply subtract the two, leaving gotnow equal to the number of extra bytes read. Since the code immediately following the (oci->ignoreBytes > 0) block tries to handle the next request, advance oci->bufptr immediately instead of setting oci->lenLastReq and letting the next call to ReadRequestFromClient do it. Fixes the XTS pChangeKeyboardMapping-3 test. CASES TESTS PASS UNSUP UNTST NOTIU WARN FIP FAIL UNRES UNIN ABORT -Xproto 122 389 367 2 19 0 0 0 1 0 0 0 +Xproto 122 389 368 2 19 0 0 0 0 0 0 0 Signed-off-by: Aaron Plattner <aplattner@nvidia.com> Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> commit cf88363db0ebb42df7cc286b85d30d7898aea840 Author: Aaron Plattner <aplattner@nvidia.com> Date: Fri Aug 27 10:20:29 2010 -0700 os: Return BadLength instead of disconnecting BigReq clients (#4565) If a client sends a big request that's too big (i.e. bigger than maxBigRequestSize << 2 bytes), the server just disconnects it. This makes the client receive SIGPIPE the next time it tries to send something. The X Test Suite sends requests that are too big when the test specifies the TOO_LONG test type. When the client receives SIGPIPE, XTS marks it as UNRESOLVED, which counts as a failure. Instead, remember how long the request is supposed to be and then return that size. Dispatch() checks the length and sends BadLength to the client. Then, whenever oci->ignoreBytes is nonzero, ignore the data read instead of trying to process it as a request. Signed-off-by: Aaron Plattner <aplattner@nvidia.com> Reviewed-by: Keith Packard <keithp@keithp.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Fix overflow of ConnectionOutput->size and ->countPeter Harris2017-03-201-3/+4
| | | | | | | | | | | | | | | | | | | | | | | | | commit 4b0d0df34f10a88c10cb23dd50087b59f5c4fece Author: Peter Harris <pharris@opentext.com> Date: Mon Nov 17 14:31:24 2014 -0500 Fix overflow of ConnectionOutput->size and ->count When (long) is larger than (int), and when realloc succeeds with sizes larger than INT_MAX, ConnectionOutput->size and ConnectionOutput->count overflow and become negative. When ConnectionOutput->count is negative, InsertIOV does not actually insert an IOV, and FlushClient goes into an infinite loop of writev(fd, iov, 0) [an empty list]. Avoid this situation by killing the client when it has more than INT_MAX unread bytes of data. Signed-off-by: Peter Harris <pharris@opentext.com> Reviewed-by: Keith Packard <keithp@keithp.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* dix: Pass ClientPtr to FlushCallbackMichel Dänzer2017-03-202-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported X.org commits: commit b380f3ac51f40ffefcde7d3db5c4c149f274246d Author: Michel Dänzer <michel.daenzer@amd.com> Date: Tue Aug 2 17:53:01 2016 +0900 dix: Pass ClientPtr to FlushCallback This change has two effects: 1. Only calls FlushCallbacks when we're actually flushing data to a client. The unnecessary FlushCallback calls could cause significant performance degradation with compositing, which is significantly reduced even without any driver changes. 2. By passing the ClientPtr to FlushCallbacks, drivers can completely eliminate unnecessary flushing of GPU commands by keeping track of whether we're flushing any XDamageNotify events to the client for which the corresponding rendering commands haven't been flushed to the GPU yet. Reviewed-by: Adam Jackson <ajax@redha.com> Signed-off-by: Michel Dänzer <michel.daenzer@amd.com> commit c65f610e12f9df168d5639534ed3c2bd40afffc8 Author: Kristian Høgsberg <krh@bitplanet.net> Date: Thu Jul 29 18:52:35 2010 -0400 Always call the flush callback chain when we flush client buffers We were missing the callback in a couple of places. Drivers may use the flush callback to submit batched up rendering before events (for example, damage events) are sent out, to ensure that the rendering has been queued when the client receives the event. Signed-off-by: Kristian Høgsberg <krh@bitplanet.net> Reviewed-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Xserver/os/io.c: Bail out early from FlushClient if nothing needs to be written.Keith Packard2017-03-191-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found in X.org commit: commit d5bf6f95f31037bd49b11348b500c3c13b7e0c99 Author: Keith Packard <keithp@keithp.com> Date: Thu Oct 4 14:42:37 2012 -0700 Fix FlushClient to write extraBuf when provided (regression fix) In commit: commit 092c57ab173c8b71056f6feb3b9d04d063a46579 Author: Adam Jackson <ajax@redhat.com> Date: Fri Jun 17 14:03:01 2011 -0400 os: Hide the Connection{In,Out}put implementation details Reviewed-by: Daniel Stone <daniel@fooishbar.org> Signed-off-by: Adam Jackson <ajax@redhat.com> the check for an empty output buffer was moved from one calling location into the FlushClient implementation itself. However, this neglected the possibility that additional data, in the form of 'extraBuf' would be passed to FlushClient from other code paths. If the output buffer happened to be empty at that time, the extra data would never be written to the client. This is fixed by checking the total data to be written, which includes both pending and extra data, instead of just the pending data. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Julien Cristau <jcristau@debian.org> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Immediately queue initial WriteToClientChris Wilson2017-03-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit 9bf46610a9d20962854016032de4567974e87957 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Jun 21 22:58:31 2013 +0100 os: Immediately queue initial WriteToClient If we immediately put the WriteToClient() buffer into the socket's write queue, not only do we benefit from sending the response back to client earlier, but we also avoid the overhead of copying the data into our own staging buffer and causing extra work in the next select(). The write is effectively free as typically we may only send one reply per client per select() call, so the cost of the FlushClient() is the same. shmget10: 26400 -> 110000 getimage10: 25000 -> 108000 shmget500: 3160 -> 13500 getimage500: 1000 -> 1010 The knock-on effect is that on a mostly idle composited desktop, the CPU overhead is dominated by the memmove in WriteToClient, which is in turn eliminated by this patch. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os/xdmcp: Remove dead 'restart' codeMike Gabriel2017-03-191-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | Completing the below X.org commit: commit a3a40291330bad10401fe2bcdbc097ce742b026a Author: Keith Packard <keithp@keithp.com> Date: Mon Sep 21 07:16:16 2015 +0100 os/xdmcp: Remove dead 'restart' code The X server used to wait for the user to hit a key or move the mouse before restarting the session after a keepalive failure. This, presumably, was to avoid having the X server continuously spew XDMCP protocol on the network while the XDM server was dead. Switching into this state was removed from the server some time before XFree86 4.3.99.16, so the remaining bits of code have been dead for over a decade, and no-one ever noticed. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Initialize NotifyFds earlier in startupMike Gabriel2017-03-171-1/+5
| | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit ce6546337487c052b5dd3c04d3d8d4b09d691c3d Author: Keith Packard <keithp@keithp.com> Date: Tue May 31 09:38:17 2016 -0700 os: Initialize NotifyFds earlier in startup If the server calls AbortServer during the first-time initialization (which can happen if you start the server on an already using DISPLAY), then the dbus code will shut down and call the notify fd interface. If the notify fd list hasn't been initialized, the server will crash. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Implement support for NotifyFd X_NOTIFY_WRITE and removal of ↵Keith Packard2017-03-174-52/+69
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | AddEnabledDevices/RemoveEnabledDevices Backported from X.org: commit be5a513fee6cbf29ef7570e57eb0436d70fbd88c Author: Keith Packard <keithp@keithp.com> Date: Mon Dec 7 15:12:14 2015 -0800 Remove AddEnabledDevice and AddGeneralSocket APIs All uses of these interfaces should instead be using the NotifyFd API instead. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Adam Jackson <ajax@redhat.com> commit 4020aacd1fc5b9c63369f011aeb9120af9c55218 Author: Keith Packard <keithp@keithp.com> Date: Wed Nov 11 22:02:03 2015 -0800 os: Implement support for NotifyFd X_NOTIFY_WRITE This adds the ability to be notified when a file descriptor is available for writing. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* Move the code for resetting the DPMS mode in response to input events, from ↵Fredrik Höglund2017-03-171-4/+0
| | | | | | | | | | | | | | | | | WaitForSomething to mieqProcessInputEvents. Backported from X.org: commit 3b5b7ef5c2ab1d196806f6359e0972fd78d204dd Author: Fredrik Höglund <fredrik@kde.org> Date: Wed Jan 3 21:05:35 2007 +0100 Move the code for resetting the DPMS mode in response to input events, from WaitForSomething to mieqProcessInputEvents. mieqProcessInputEvents already handles resetting the screen saver. Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Add NotifyFd interfacesKeith Packard2017-03-154-0/+105
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit 0c41b7af4ab0c8d22b88f201293f59524d1e7317 Author: Keith Packard <keithp@keithp.com> Date: Wed Nov 11 22:02:02 2015 -0800 os: Add NotifyFd interfaces This provides a callback-based interface to monitor file descriptors beyond the usual client and device interfaces. Modules within the server using file descriptors for reading and/or writing can call Bool SetNotifyFd(int fd, NotifyFdProcPtr notify_fd, int mask, void *data); mask can be any combination of X_NOTIFY_READ and X_NOTIFY_WRITE. When 'fd' becomes readable or writable, the notify_fd function will be called with the 'fd', the ready conditions and 'data' values as arguments, When the module no longer needs to monitor the fd, it will call void RemoveNotifyFd(int fd); RemoveNotifyFd may be called from the notify function. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os/xdmcp: Just send XDMCP keepalive packets once every three minuteKeith Packard2017-03-151-22/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Backported from X.org: commit db1089eafc1c5371fa0030202de588d2e2b4f8e5 Author: Keith Packard <keithp@keithp.com> Date: Mon Sep 21 07:16:17 2015 +0100 os/xdmcp: Just send XDMCP keepalive packets once every three minutes There was a complicated scheme to increase the time between keepalives from 3 minutes up to as much as 24 hours in an attempt to reduce network traffic from idle X terminals. X terminals receiving X traffic, or receiving user input would use the 3 minute value; X terminals without any network traffic would use a longer value. However, this was actually broken -- any activity in the X server, either client requests or user input, would end up resetting the keepalive timeout, so a user mashing on the keyboard would never discover that the XDMCP master had disappeared and have the session terminated, which was precisely the design goal of the XDMCP keepalive mechanism. Instead of attempting to fix this, accept the cost of a pair of XDMCP packets once every three minutes and just perform keepalives regularly. This will also make reworking the block and wakeup handler APIs to eliminate select masks easier. Reviewed-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com> Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: add timingsafe_memcmp to ImakeUlrich Sibiller2017-03-041-2/+7
| | | | | There might be some library linking missing on platforms that deliver timingsafe_memcmp but I cannot test that here.
* Backport CVE-2017-2624 (timingsafe_memcmp)Ulrich Sibiller2017-03-033-3/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes ArcticaProject/nx-libs#365 These two commits: commit 5c44169caed811e59a65ba346de1cadb46d266ec Author: Adam Jackson <ajax@redhat.com> Date: Thu Mar 2 17:20:30 2017 -0500 os: Squash missing declaration warning for timingsafe_memcmp timingsafe_memcmp.c:21:1: warning: no previous prototype for ‘timingsafe_memcmp’ [-Wmissing-prototypes] timingsafe_memcmp(const void *b1, const void *b2, size_t len) Signed-off-by: Adam Jackson <ajax@redhat.com> commit d7ac755f0b618eb1259d93c8a16ec6e39a18627c Author: Matthieu Herrb <matthieu@herrb.eu> Date: Tue Feb 28 19:18:25 2017 +0100 Use timingsafe_memcmp() to compare MIT-MAGIC-COOKIES CVE-2017-2624 Provide the function definition for systems that don't have it. Signed-off-by: Matthieu Herrb <matthieu@herrb.eu>
* nx-X11/{config/cf/{{Imake,X11}.tmpl,linux.cf},programs/Xserver/{include/os.h ↵Mihai Moldovan2017-03-032-2/+50
| | | | ,os/{Imakefile,reallocarray.c}}: backport reallocarray() implementation.
* Xserver/os/oscolor.c: Follow X.org in dropping the rgb.txt file entirely. ↵Mike Gabriel2017-02-264-449/+1611
| | | | | | | | | | | | | | | | | | | Content of that file is now hard-coded. Adopting an exact copy of os/oscolor.c from X.org leads to this compiler warning: ``` oscolor.c:844:1: warning: string length ‘7614’ is greater than the length ‘4095’ ISO C99 compilers are required to support [-Woverlength-strings] }; ^ ``` This will be address later in coordination with X.org. Note: there is a tiny change in oscolor.c as we ship it. The original X.org file includes <X11/keysym.h> which seems unneeded. We drop that one line from oscolor.c. Fixes ArcticaProject/nx-libs#259.
* The smart scheduler is not optional.Mathieu Bérard2017-02-154-33/+0
| | | | | | | | | | | | Backported from X.org: commit 9f9268821b13038556fbc029df54ab0e9b2aa77f Author: Mathieu Bérard <mathieu.berard@crans.org> Date: Mon Aug 11 13:52:38 2008 -0400 The smart scheduler is not optional. Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* drop platform support: unifdef sgi.Mike Gabriel2017-02-083-10/+1
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef QNX.Mike Gabriel2017-02-084-30/+4
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef DGUX.Mike Gabriel2017-02-085-49/+3
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef AIXV3, AIXV4 (and AIXrt, AIX386).Mike Gabriel2017-02-082-24/+0
| | | | Fixes ArcticaProject/nx-libs#274.
* drop platform support: unifdef hpux and __hppa__.Mike Gabriel2017-02-083-12/+8
| | | | Fixes ArcticaProject/nx-libs#273.
* drop platform support: unifdef Lynx.Mike Gabriel2017-02-086-31/+3
| | | | Fixes ArcticaProject/nx-libs#272.
* drop platform support: unifdef __UNIXOS2__.Mike Gabriel2017-02-089-81/+8
| | | | Fixes ArcticaProject/nx-libs#271.
* Remove libcwrapper usage from xorg server modules. The libcwrapper is not ↵Eric Anholt2016-12-041-7/+0
| | | | | | | | | | | | | | | used in nxagent. From c3d14036729fd186d4ec7ca1de603e1f2d174e2f Mon Sep 17 00:00:00 2001 From: Eric Anholt <anholt@freebsd.org> Date: Fri, 10 Feb 2006 22:00:30 +0000 Subject: Remove libcwrapper usage from xorg server modules. The libcwrapper is only of (marginal) use in the drivers, and that usage remains. Backported-to-NX-by: Mike Gabriel <mike.gabriel@das-netzwerkteam.de> Fixes ArcticaProject/nx-libs#246 (together with merge commit ecd335fa61551d0b86d3f075469a7743ab899d95).
* libX11 + Xserver: fix missing define warningUlrich Sibiller2016-11-031-1/+4
| | | | | | warning: "XTRANS_SEND_FDS" is not defined [-Wundef] This define came in via the recent xtrans update.
* Remove OS2PIPECONN transportUlrich Sibiller2016-11-022-2/+2
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* Remove unused TLI ("STREAMSCONN") codeUlrich Sibiller2016-11-025-60/+17
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* remove DECnet supportUlrich Sibiller2016-11-023-122/+2
| | | | just as Xorg upstream did
* Imake: drop DoLoadableServer, MakeDllModules and IHaveModulesUlrich Sibiller2016-11-021-5/+0
| | | | | | We do not build loadable modules, so we do not need them anywhere. Also remove the extra files requires for module builds.
* xserver: adapt xkbsrc includes syntax to match upstreamUlrich Sibiller2016-10-061-1/+1
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* os/access: fix regression in server interpreted authDave Airlie2016-10-061-1/+1
| | | | | | | | | | | | | | | | This was reported on irc on Fedora when rawhide went to 1.17.1. regression occured in: 2566835b4374edb3e5a8353d4f7c9e7ec4851c57 os: Eliminate uninitialized value warnings from access.c siAddrMatch doesn't need addr to be a useful value, it checks some things like localuser without having an address at all. Signed-off-by: Dave Airlie <airlied@redhat.com> Tested-by: Peter Hutterer <peter.hutterer@who-t.net> Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net> v2: backport to nx-libs 3.6.x (Ulrich Sibiller)
* os: Eliminate uninitialized value warnings from access.cKeith Packard2016-10-061-8/+8
| | | | | | | | | | | | The ConvertAddr function doesn't reliably set the 'addr' return value, and so callers are getting flagged for using potentially uninitialized values. Initialize the value in the callers to NULL and then go ahead and check for NULL values before using them. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> v2: backport to nx-libs 3.6.x (Ulrich Sibiller)
* dix: GetHosts bounds check using wrong pointer value [CVE-2014-8092 pt. 6]Keith Packard2016-10-061-1/+1
| | | | | | | | | | | | | | | GetHosts saves the pointer to allocated memory in *data, and then wants to bounds-check writes to that region, but was mistakenly using a bare 'data' instead of '*data'. Also, data is declared as void **, so we need a cast to turn it into a byte pointer so we can actually do pointer comparisons. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com> Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com> v1: Keith Packard v2: backport to nx-libs 3.6.x (Ulrich Sibiller)
* Fix multiple warnings in os/xdmauth.c.Eamon Walsh2016-10-061-10/+12
| | | | | v1: Eamon Walsh v2: backport to nx-libs 3.6.x (Ulrich Sibiller)
* replace transport.c link by xstrans.cUlrich Sibiller2016-10-068-14/+39
| | | | Just like upstream does
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