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* dix/os: backport various signal handling and smart scheduler changes from X.orgMike Gabriel2017-03-211-71/+93
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* Xserver/os/oscolor.c: Follow X.org in dropping the rgb.txt file entirely. ↵Mike Gabriel2017-02-261-8/+0
| | | | | | | | | | | | | | | | | | | 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 Bérard2017-02-151-9/+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 Gabriel2017-02-081-7/+0
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef QNX.Mike Gabriel2017-02-081-4/+1
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef DGUX.Mike Gabriel2017-02-081-10/+0
| | | | Relates to ArcticaProject/nx-libs#275.
* drop platform support: unifdef AIXV3, AIXV4 (and AIXrt, AIX386).Mike Gabriel2017-02-081-20/+0
| | | | Fixes ArcticaProject/nx-libs#274.
* drop platform support: unifdef Lynx.Mike Gabriel2017-02-081-5/+1
| | | | Fixes ArcticaProject/nx-libs#272.
* drop platform support: unifdef __UNIXOS2__.Mike Gabriel2017-02-081-22/+4
| | | | Fixes ArcticaProject/nx-libs#271.
* Remove unused TLI ("STREAMSCONN") codeUlrich Sibiller2016-11-021-2/+2
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* xserver: adapt xkbsrc includes syntax to match upstreamUlrich Sibiller2016-10-061-1/+1
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* replace transport.c link by xstrans.cUlrich Sibiller2016-10-061-0/+3
| | | | Just like upstream does
* xserver: use own copy of XKBsrv.h headerUlrich Sibiller2016-10-061-1/+1
| | | | just like upstream does
* Per-file copyright notices: Update copyright information in file headers ↵Mike Gabriel2016-07-061-20/+25
| | | | that NoMachine placed there own copyright statement in.
* os: Make sure that writing our pid to the lock file actually workedKeith Packard2016-07-051-1/+3
| | | | | | | | | There's no sense verifying that we can create the lock file and then ignoring the return value from write. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Jamey Sharp <jamey@minilop.net> Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* os: Remove deprecated malloc/free wrappers, clean ↵Mike Gabriel2016-07-021-132/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | {X,XNF}{alloc,calloc,realloc,free,strdup} from pre-C89 baggage Backported from X.org: commit cad9b053d52f62432dfd70e42e0240de77027cae Author: Adam Jackson <ajax@redhat.com> Date: Tue Jul 8 13:24:25 2014 -0400 os: Remove deprecated malloc/free wrappers Reviewed-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Adam Jackson <ajax@redhat.com> commit e983848ab44b0769f97f6207f1aa8b4f127be6a9 Author: Mikhail Gusarov <dottedmag@dottedmag.net> Date: Thu May 6 00:16:24 2010 +0700 Clean {X,XNF}{alloc,calloc,realloc,free,strdup} from pre-C89 baggage C89 guarantees alignment of pointers returned from malloc/calloc/realloc, so stop fiddling with alignment manually and just pass the arguments to library functions. Also convert silent error when negative size is passed into function into warning in log file. Signed-off-by: Mikhail Gusarov <dottedmag@dottedmag.net> Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net> Backport to nx-libs: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* nx-X11/programs/Xserver: Drop {X,x}realloc() macros, use realloc() instead.Mike Gabriel2016-07-021-1/+1
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* nx-X11/programs/Xserver: Drop {X,x}alloc() macros, use malloc() instead.Mike Gabriel2016-07-021-12/+6
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* nx-X11/programs/Xserver: Drop {X,x}free() macros, use free() instead.Mike Gabriel2016-07-021-5/+5
| | | | Fixes ArcticaProject/nx-libs#105
* noRRXineramaExtension: Make Boolean configurable via new cmdline switch ↵Mike Gabriel2016-06-181-2/+15
| | | | (+|-rrxinerama).
* nx-X11/programs/Xserver: Include nxcomp{,ext,shad} headers like one would do ↵Mike Gabriel2016-06-131-2/+2
| | | | with system-wide shared libraries.
* XF86MISC: Drop all Xserver code blocks that relate to removed XF86MISC ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* MITMISC: Drop all Xserver code blocks that relate to removed MITMISC extension.Mike Gabriel2016-06-011-3/+0
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* XF86VIDMODE: Drop all Xserver code blocks that relate to removed XF86VIDMODE ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* MULTIBUFFER: Drop all Xserver code blocks that relate to removed MULTIBUFFER ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* LBX: Drop all Xserver code blocks that relate to removed LBX extension.Mike Gabriel2016-06-011-3/+0
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* EVI: Drop all Xserver code blocks that relate to removed EVI extension.Mike Gabriel2016-06-011-3/+0
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* FONTCACHE: Drop all Xserver code blocks that relate to removed FONTCACHE ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* XEVIE: Drop all Xserver code blocks that relate to removed XEVIE extension.Mike Gabriel2016-06-011-5/+0
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* XFree86DGA: Drop all Xserver code blocks that relate to removed XFree86DGA ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* TOGCUP: Drop all Xserver code blocks that relate to removed TOGCUP extension.Mike Gabriel2016-06-011-3/+0
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* XAPPGROUP: Drop all Xserver code blocks that relate to removed XAPPGROUP ↵Mike Gabriel2016-06-011-3/+0
| | | | extension.
* Xserver help: Document -disablexineramaextension cmdline option.Mike Gabriel2015-12-301-0/+1
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* Clear header file namespace separation (<X11/...> vs. <nx-X11/...>).Mike Gabriel2015-12-281-7/+7
| | | | | | | | | | | | | | | | | | | | In the process of building nxagent against more and more system-wide installed X.org libraries, we come to the limit of including structs from this (bundled nx-X11) and that (system-wide X.Org) library. This commit introduces a clear namespace separation of headers provided by nx-X11 and headers provided by X.Org. This approach is only temporary as we want to drop all nx-X11 bundled libraries from nx-libs. However, for a while we need to make this separation clear and also ship some reduced fake X.Org headers that avoid pulling in libX* and libNX_X* symbols at the same time. This patch has been tested on Debian jessie and unstable and requires no overall testing on various distros and distro versions, as we finally will drop all libNX_X* libraries and build against X.org's client libs. For now, this hack eases our development / cleanup process.
* Replace 'pointer' type with 'void *'Keith Packard2015-12-281-16/+16
| | | | | | | | | | This lets us stop using the 'pointer' typedef in Xdefs.h as 'pointer' is used throughout the X server for other things, and having duplicate names generates compiler warnings. Signed-off-by: Keith Packard <keithp@keithp.com> Reviewed-by: Eric Anholt <eric@anholt.net> Rebased against NX: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
* imake cleanup: Drop all references to XprtServer and BuildXprint*.Mike Gabriel2015-04-041-13/+0
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* Fix CVE-2011-4028: File disclosure vulnerability. upstream xorg/xserver ↵Mike DePaulo2015-02-141-1/+1
| | | | | | | | commit 6ba44b91e37622ef8c146d8f2ac92d708a18ed34 use O_NOFOLLOW to open the existing lock file, so symbolic links aren't followed, thus avoid revealing if it point to an existing file.
* Be compliant with POS36-C: Observe correct revocation order while ↵Orion Poplawski2015-02-131-0/+7
| | | | | | | | | | | | | | | | relinquishing privileges (602_nx-X11_initgroups.full.patch). The Fedora review of NX (redistributed) caught the following rpmlint issue: This executable is calling setuid and setgid without setgroups or initgroups. There is a high probability this mean it didn't relinquish all groups, and this would be a potential security issue to be fixed. Seek POS36-C on the web for details about the problem. Ref POS36-C: https://www.securecoding.cert.org/confluence/display/seccode/POS36-C.+Observe+correct+revocation+order+while+relinquishing+privileges This patch adds initgroups() calls to the code to initialize the supplemental group list.
* Imported nx-X11-3.5.0-1.tar.gznx-X11/3.5.0-1Reinhard Tartler2011-10-101-1/+1
| | | | | | | | Summary: Imported nx-X11-3.5.0-1.tar.gz Keywords: Imported nx-X11-3.5.0-1.tar.gz into Git repository
* Imported nx-X11-3.4.0-3.tar.gznx-X11/3.4.0-3Reinhard Tartler2011-10-101-1/+1
| | | | | | | | Summary: Imported nx-X11-3.4.0-3.tar.gz Keywords: Imported nx-X11-3.4.0-3.tar.gz into Git repository
* Imported nx-X11-3.4.0-1.tar.gznx-X11/3.4.0-1Reinhard Tartler2011-10-101-2/+2
| | | | | | | | Summary: Imported nx-X11-3.4.0-1.tar.gz Keywords: Imported nx-X11-3.4.0-1.tar.gz into Git repository
* Imported nx-X11-3.3.0-5.tar.gznx-X11/3.3.0-5Reinhard Tartler2011-10-101-0/+13
| | | | | | | | Summary: Imported nx-X11-3.3.0-5.tar.gz Keywords: Imported nx-X11-3.3.0-5.tar.gz into Git repository
* Imported nx-X11-3.1.0-1.tar.gznx-X11/3.1.0-1Reinhard Tartler2011-10-101-0/+2427
Summary: Imported nx-X11-3.1.0-1.tar.gz Keywords: Imported nx-X11-3.1.0-1.tar.gz into Git repository
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