Commit Graph

545 Commits

Author SHA1 Message Date
Ryan Pavlik
f32ad6dd31 os/utils.c: Provide only stubs for Lock/UnlockServer on WIN32
MinGW and MSVC lack the POSIX functions to compile the lock file code.

Signed-off-by: Ryan Pavlik <rpavlik@iastate.edu>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
2012-10-29 12:23:12 +00:00
Denys Vlasenko
0c7109f321 os: fix typo in OsSigHandler() error message
Recieved → Received

Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-10-08 14:18:46 +10:00
Keith Packard
7f9d78d8ff os: Don't re-declare ConnectionInputPtr and ConnectionOutputPtr
They're declared in osdep.h, so don't redeclare them in io.c as
well. Keeps the compiler happier.

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
2012-10-04 23:15:54 -07:00
Keith Packard
d5bf6f95f3 Fix FlushClient to write extraBuf when provided (regression fix)
In commit:

	commit 092c57ab17
	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>
2012-10-04 14:58:49 -07:00
Adam Jackson
092c57ab17 os: Hide the Connection{In,Out}put implementation details
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-09-20 14:40:18 -04:00
Adam Jackson
e2c7d70e5d 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>
2012-09-20 14:40:18 -04:00
Adam Jackson
ff8e3ad807 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>
2012-09-20 14:36:39 -04:00
Adam Jackson
3f7bc22263 os: Repack ConnectionOutput for LP64
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-09-20 14:36:36 -04:00
Peter Hutterer
24ffcfcded os: fix typo, fsync when WIN32 is _not_ defined
Introduced in 164b38c72f

Reported-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
2012-08-23 14:48:18 +10:00
Peter Hutterer
1ebba43052 os: don't block signal-unsafe logging, merely warn about it.
Throw an error into the log file, but continue anyway. And after three
warnings, stop complaining. Not all input drivers will be fixed in time (or
ever) and our printf implementation is vastly inferior, so there is still a
use-case for non-sigsafe logging.

This also adds more linebreaks to the message.

CC: Chase Douglas <chase.douglas@canonical.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-08-21 07:54:07 +10:00
Peter Hutterer
4912b4adb6 os: add support for %d and %i to pnprintf
The mouse driver uses %i in some debug messages

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-08-21 07:54:07 +10:00
Peter Hutterer
7f8c39c8b5 Add FormatInt64 to convert signed integers in signal-safe manner
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-08-21 07:54:07 +10:00
Peter Hutterer
7f09126e06 os: don't unconditionally unblock SIGIO in OsReleaseSignals()
Calling OsReleaseSignal() inside the signal handler releases SIGIO, causing
the signal handler to be called again from within the handler.

Practical use-case: when synaptics calls TimerSet in the signal handler,
this causes the signals to be released, eventually hanging the server.

Regression introduced in 08962951de.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2012-08-07 09:39:56 +10:00
Colin Harrison
a8464dfa28 os: Fix TMP fall-back in Win32TempDir()
Fix Win32TempDir() in the case where we fell back to checking the TMP
environment variable. It looks like this has been wrong since forever.

Signed-off-by: Colin Harrison <colin.harrison@virgin.net>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2012-08-03 22:58:09 +01:00
Keith Packard
75966a4186 xwin: Clean up os wrappers for System, Popen and Pclose on Windows
Popen and Pclose are never used on Windows, so don't bother to even
try to define them.

System(s) was defined as system(s), but the two users of that
function are in xkb, which carefully redefines that as
Win32System. Move Win32System and Win32TempDir to os/utils.c, renaming
Win32System to be just System, which simplifies the xkb code

Signed-off-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2012-07-17 16:08:04 +01:00
Keith Packard
6e12cb147d Merge branch 'local-fixes' 2012-07-10 00:52:11 -07:00
Daniel Stone
fadfc29470 GLX: Remove unused noGlxVisualInit
No-one ever did anything with this variable except assign its default
value to it.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Acked-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-10 00:42:09 -07:00
Daniel Stone
656af2c7e7 Don't make failure to -nolisten fatal
If failing to disable a protocol specified by -nolisten failed, we'd
throw a FatalError and bomb startup entirely.  From poking at xtrans, it
looks like the only way we can get a failure here is because we've
specified a protocol name which doesn't exist, which probably doesn't
constitute a security risk.

And it makes it possible to start gdm even though you've built with
--disable-tcp-transport.

Signed-off-by: Daniel Stone <daniel@fooishbar.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-09 22:57:53 -07:00
Alan Coopersmith
ad4092cf7d Replace padlength tables with inline functions from misc.h
Adds new function padding_for_int32() and uses existing pad_to_int32()
depending on required results.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Tested-by: Daniel Stone <daniel@fooishbar.org>
2012-07-09 22:52:30 -07:00
Alan Coopersmith
7a29f68782 Initialize padding bits to 0 in ErrorConnMax()
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Keith Packard <keithp@keithp.com>
Tested-by: Daniel Stone <daniel@fooishbar.org>
2012-07-09 22:52:30 -07:00
Alan Coopersmith
bed610fcae 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>
2012-07-09 22:52:30 -07:00
Keith Packard
023127915e Reliably reset signals at server init time
Each DDX currently calls OsReleaseSIGIO in case it was suspended when
the server regen started. This causes a BUG to occur if SIGIO was
*not* blocked at that time. Instead of relying on each DDX, make the
OS layer reliably reset all signal state at server init time, ensuring
that signals are suitably unblocked and that the various signal state
counting variables are set back to zero.

Signed-off-by: Keith Packard <keithp@keithp.com>
2012-07-09 16:34:39 -07:00
Peter Hutterer
d84f0f823e Merge branch 'sigio-vt-switch-issues' into for-keith
Conflicts:
	test/Makefile.am

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-07-04 21:23:48 +10:00
Peter Hutterer
6bf356ef28 os: add OsBlockSIGIO and OsReleaseSIGIO
Let the dix be in charge of changing the sigprocmask so we only have one
entity that changes it.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Keith Packard <keithp@keithp.com>
2012-07-03 15:56:33 +10:00
Keith Packard
24525d96a3 Merge branch 'sigsafe-logging-varargs'
This merge includes a minor fixup for '%p' arguments; must cast to
uintptr_t instead of uint64_t as we use -Werror=pointer-to-int-cast
which complains when doing a cast (even explicitly) from a pointer
to an integer of different size.
2012-07-02 22:35:39 -07:00
Chase Douglas
89e3ac07ac Log safely in fatal signal handler
While we probably don't need to be signal safe here since we will never
return to the normal context, the logging signal context check will
cause unsafe logging to be unhandled. Using signal safe logging here
resolves the issue.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-07-02 22:34:33 -07:00
Chase Douglas
82d1c6b310 Warn when attempting to log in a signal unsafe manner from signal context
Also, print out the offending message format. This will hopefully help
developers track down unsafe logging.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-07-02 22:34:32 -07:00
Chase Douglas
0fa5217836 Print backtrace in a signal-safe manner
Backtraces are often printed in signal context, such as when a segfault
occurs.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

os: print offset as unsigned int, not long unsigned int

pnprintf() takes unsigned int for %u

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-07-02 22:34:32 -07:00
Chase Douglas
ac20815d52 Add ErrorFSigSafe() alternative to ErrorF()
ErrorF() is not signal safe. Use ErrorSigSafe() whenever an error
message may be logged in signal context.

[whot: edited to "ErrorFSigSafe"]

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-07-02 22:34:32 -07:00
Chase Douglas
164b38c72f Add LogMessageVerbSigSafe() for logging messages while in signal context
[whot: edited to use varargs, squashed commit below]

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

os: fix vararg length calculation

Make %u and %x sizeof(unsigned int), %p sizeof(void*). This is printf
behaviour and we can't guarantee that void* is uint64_t anyway.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-07-02 22:34:32 -07:00
Peter Hutterer
014ad46f1b os: print newline after printing display name
Much easier for scripts that try to read the display value off the file
descriptor. Plus, this restores the behaviour we had for this patch in
Fedora since server 1.6 (April 2009).

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-06-22 10:49:06 +10:00
Chase Douglas
704b847abf Add FormatUInt64{,Hex}() for formatting numbers in a signal safe manner
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-06-21 15:45:22 +10:00
Chase Douglas
bc85c81687 Save log file file descriptor for signal context logging
None of the FILE based functions are signal safe, including fileno(), so
we need to save the file descriptor for when we are in signal context.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-06-21 15:45:22 +10:00
Chase Douglas
d3725549f0 Add global variable inSignalContext
This will be used for checking for proper logging when in signal
context.

Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-06-21 15:45:22 +10:00
Keith Packard
3a94b338aa Merge remote-tracking branch 'whot/for-keith' 2012-05-09 21:17:16 -07:00
Yaakov Selkowitz
e6461db6dc os: Add CryptoAPI as a choice of SHA1 implementation
Both Cygwin and MinGW can use Windows' native CryptoAPI for SHA1,
saving a dependency on libgcrypt or OpenSSL.  The necessary functions
are in ADVAPI32.DLL, which is among the default lib flags and is
already used in hw/xwin for accessing the registry.

Signed-off-by: Yaakov Selkowitz <yselkowitz@users.sourceforge.net>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Colin Harrison <colin.harrison@virgin.net>
Tested-by: Colin Harrison <colin.harrison@virgin.net>
2012-05-04 13:13:50 -05:00
Daniel Kurtz
c91d00e0f3 os/log: refactor logging
It is not safe to ever use an arbitrary (possibly user supplied) string as
part of the format for a *sprintf() call.

For example:
  1. Name a Bluetooth keyboard "%n%n%n%n%n%n%n%n"
  2. Pair it with a computer running X and try to use it
  3. X is not happy when trying to do the following in xf86-input-evdev:
     xf86IDrvMsg(pInfo, X_CONFIG, "Device: \"%s\"\n", device);
     because LogVHdrMessageVerb() has put the %n from the device name
     into a format string of the form:
        "evdev: %n%n%n%n%n%n%n%n: Device: \"%s\"\n"

Instead, build up a log message in place by appending successive formatted
strings by sncprintf'ing to the end of the previous.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-05-03 14:59:23 +10:00
Daniel Kurtz
6ce0eac4f8 os/log: only write timestamp if a message is actually written to logfile
The current code will write a timestamps into the logFile whenever
the last message ended with a '\n' - even if the verb for that timestamp
is at too high a level.  This timestamp will sit there with no matching
message until the next call to LogVWrite with a valid verb.

In other words, in some cases, timestamps in the X.org.log are for some
completely unrelated message that was previously ignored due to
insufficient verbosity, and not for the message that appears next to it
in the log file.

We keep the current policy which appears to be to only apply timestamps if
a message is actually written to a log file.  That is, no timestamps on
stderr, or in the mem buffer.  Therefore, the timestamp stringification
is moved to the conditional where it is used.

Since logging uses a fixed length buffer, this patch also forces a '\n'
whenever a buffer is terminated due to a too-long write request.  This
allows the newline detection to work even on overflow, and also cleans up
the log a bit in the overflow case.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-05-03 14:59:23 +10:00
Daniel Kurtz
5c2e2a164d os/xprintf: add Xvscnprintf and Xscnprintf
Normal snprintf() usually returns the number of bytes that would have been
written into a buffer had the buffer been long enough.

The scnprintf() variants return the actual number of bytes written,
excluding the trailing '\0'.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-05-03 14:59:23 +10:00
Daniel Kurtz
c30862879d os/log: trivial cleanups
* space->tab
 * remove comment that doesn't make any sense

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-05-03 14:59:23 +10:00
Peter Hutterer
08962951de os: make timers signal-safe
If TimerSet() is called from a signal handler (synaptics tap handling code)
may result in list corruption if we're currently inside TimerSet().

See backtrace in
https://bugzilla.redhat.com/show_bug.cgi?id=814869

Block signals for all list manipulations in the timers.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Chase Douglas <chase.douglas@canonical.com>
2012-05-01 11:36:35 +10:00
Chase Douglas
88bacc49f0 os: Add -displayfd option
This option specifies a file descriptor in the launching process.  X
will scan for an available display number and write that number back to
the launching process, at the same time as SIGUSR1 generation.  This
means display managers don't need to guess at available display numbers.
As a consequence, if X fails to start when using -displayfd, it's not
because the display was in use, so there's no point in retrying the X
launch on a higher display number.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Chase Douglas <chase.douglas@canonical.com>
Reviewed-by: Julien Cristau <jcristau@debian.org>
Tested-by: Julien Cristau <jcristau@debian.org>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2012-05-01 11:36:30 +10:00
Jeremy Huddleston
eca58ee4db os: Fix regression with FatalError not calling va_start
Regression From: a818b30598

Found-by: Colin Harrison <colin.harrison@virgin.net>
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
2012-03-30 14:42:11 -07:00
Jeremy Huddleston
a818b30598 os: Pass the FatalError message to OsVendorFatalError
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
2012-03-24 01:07:05 -07:00
Peter Hutterer
a7eac500e6 Merge branch 'per-device-sync-counters' into for-keith 2012-03-22 13:13:07 +10:00
Peter Hutterer
6aef209ebc Change lastDeviceIdleTime to be per-device
Preparation work for per-device idle counters.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: James Jones <jajones@nvidia.com>
2012-03-22 13:12:56 +10:00
Peter Hutterer
14e3ea730e include: add an X_DEBUG message type
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
2012-03-22 11:33:21 +10:00
Keith Packard
9838b7032e Introduce a consistent coding style
This is strictly the application of the script 'x-indent-all.sh'
from util/modular. Compared to the patch that Daniel posted in
January, I've added a few indent flags:

	-bap
	-psl
	-T PrivatePtr
	-T pmWait
	-T _XFUNCPROTOBEGIN
	-T _XFUNCPROTOEND
	-T _X_EXPORT

The typedefs were needed to make the output of sdksyms.sh match the
previous output, otherwise, the code is formatted badly enough that
sdksyms.sh generates incorrect output.

The generated code was compared with the previous version and found to
be essentially identical -- "assert" line numbers and BUILD_TIME were
the only differences found.

The comparison was done with this script:

dir1=$1
dir2=$2

for dir in $dir1 $dir2; do
	(cd $dir && find . -name '*.o' | while read file; do
		dir=`dirname $file`
		base=`basename $file .o`
		dump=$dir/$base.dump
		objdump -d $file > $dump
	done)
done

find $dir1 -name '*.dump' | while read dump; do
	otherdump=`echo $dump | sed "s;$dir1;$dir2;"`
	diff -u $dump $otherdump
done

Signed-off-by: Keith Packard <keithp@keithp.com>
Acked-by: Daniel Stone <daniel@fooishbar.org>
Acked-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2012-03-21 13:54:42 -07:00
Peter Hutterer
a60d87ffe6 os: prettify backtrace output
Changes to output:
* "Backtrace:" now appears on a separate line _with_ a timestamp
* A blank line is inserted after the last backtrace line

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Reviewed-by: Julien Cristau <jcristau@debian.org>
2012-01-13 09:03:05 +10:00
Keith Packard
5de0c2582f Revert "os: Repack ConnectionOutput for LP64"
This reverts commit d5f724544a.

ABI change pended for 1.13
2012-01-12 12:10:07 -08:00
Keith Packard
d9eeede52f Revert "dix: Pull client-is-local flag up to the ClientRec"
This reverts commit 49d38b75c8.

ABI change pended for 1.13
2012-01-12 12:09:59 -08:00
Keith Packard
3be37375ee Revert "dix: Extend initial connection handshake for forwarding proxies"
This reverts commit 78fa121f40.

ABI change pended for 1.13
2012-01-12 12:09:55 -08:00
Keith Packard
5b9f5c8a53 Revert "os: Hide the Connection{In,Out}put implementation details"
This reverts commit 48e7a2ef57.

ABI change pended for 1.13
2012-01-12 12:09:44 -08:00
Matthieu Herrb
6d6d4cb604 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>
2012-01-09 13:09:49 -08:00
Keith Packard
0b113f7cdf Merge commit '777bf90abeac37087a3d0538b847742523d5acf2' 2012-01-09 13:07:25 -08:00
Keith Packard
1f5587e144 Merge remote-tracking branch 'kibi/master' 2012-01-09 11:37:59 -08:00
Adam Jackson
c44ef2e1ff os: Minor header cleanup
Move some constants near their only users, and remove some
getdtablesize() logic that's second-guessing configure.

Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-01-06 13:29:53 -05:00
Adam Jackson
48e7a2ef57 os: Hide the Connection{In,Out}put implementation details
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-01-06 13:29:53 -05:00
Adam Jackson
78fa121f40 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>
2012-01-06 13:29:53 -05:00
Adam Jackson
49d38b75c8 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>
2012-01-06 13:29:53 -05:00
Adam Jackson
d5f724544a os: Repack ConnectionOutput for LP64
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Signed-off-by: Adam Jackson <ajax@redhat.com>
2012-01-06 13:29:53 -05:00
Julien Cristau
6269977c91 os: don't ignore failure from dladdr
If dladdr returns 0, don't go and use the returned Dl_info, it may
contain garbage.

X.Org bug#44315 <https://bugs.freedesktop.org/show_bug.cgi?id=44315>

Reported-and-tested-by: Cyril Brulebois <kibi@debian.org>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Cyril Brulebois <kibi@debian.org>
Signed-off-by: Julien Cristau <jcristau@debian.org>
2011-12-31 02:34:55 +01:00
Alan Coopersmith
cfc4c3d7fa 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>
2011-12-27 13:12:27 -08:00
Alan Coopersmith
83ac9502ea xdmcp.c: fix three small const warnings
xdmcp.c:63:36: warning: initialization discards qualifiers from pointer target type

xdmcp.c: In function 'XdmcpRegisterConnection':
xdmcp.c:482:8: warning: cast discards qualifiers from pointer target type
xdmcp.c:482:8: warning: cast discards qualifiers from pointer target type
xdmcp.c:482:8: warning: cast discards qualifiers from pointer target type

xdmcp.c: In function 'get_mcast_options':
xdmcp.c:1596:21: warning: initialization discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
3839d14808 LockServer: store path to LOCKDIR literal string in a const char *
And instead of initializing to NULL, then resetting to LOCKDIR almost
immediately (before ever using the NULL value), skip directly to setting
it to LOCKDIR.

tmppath variable is only used as input for generating the path name
via calls to strlen, sprintf, etc.

Fixes gcc warning of:
utils.c: In function 'LockServer':
utils.c:259:11: warning: assignment discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
af4113bfeb WriteToClient: preserve constness of buf while extracting length value
Fixes gcc warning:
io.c: In function 'WriteToClient':
io.c:826:6: warning: cast discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
2c9800f915 OsInit: store "/dev/null" in a const char *
It's only passed as the input side of a strcpy and as the filename to
fopen, so doesn't need to be non-const.   Fixes gcc warning:

osinit.c: In function 'OsInit':
osinit.c:154:28: warning: initialization discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
50b1097643 Constify the reason string throughout the authorization check framework
Almost all of the places the string is assigned point to a literal
string constant, so use const char * for those, and const char **
for function calls that return it via an argument.   Fortunately
the top level function, ClientAuthorized, which returns the string
as its return value is called from only one place, ProcEstablishConnection.

ProcEstablishConnection stores either that return value or a string literal
in char *reason.  It only uses reason as an argument to SendConnSetup.
SendConnSetup passes the reason argument to strlen & WriteToClient,
both of which already have const qualifiers on their args.
Thus added const to the reason variable in ProcEstablishConnection
and the reason argument to SendConnSetup.

Fixes gcc warnings:
dispatch.c: In function 'ProcEstablishConnection':
dispatch.c:3711:9: warning: assignment discards qualifiers from pointer target type
auth.c: In function 'CheckAuthorization':
auth.c:218:14: warning: assignment discards qualifiers from pointer target type
auth.c:220:20: warning: assignment discards qualifiers from pointer target type
connection.c: In function 'ClientAuthorized':
connection.c:683:3: warning: return discards qualifiers from pointer target type
mitauth.c: In function 'MitCheckCookie':
mitauth.c:88:13: warning: assignment discards qualifiers from pointer target type
xdmauth.c:259:14: warning: assignment discards qualifiers from pointer target type
xdmauth.c:270:14: warning: assignment discards qualifiers from pointer target type
xdmauth.c:277:11: warning: assignment discards qualifiers from pointer target type
xdmauth.c:293:15: warning: assignment discards qualifiers from pointer target type
xdmauth.c:313:14: warning: assignment discards qualifiers from pointer target type
xdmauth.c:322:11: warning: assignment discards qualifiers from pointer target type
rpcauth.c: In function 'SecureRPCCheck':
rpcauth.c:136:10: warning: assignment discards qualifiers from pointer target type

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
9999819601 Constify string for authorization protocol names
gcc was warning from storing string constants in a char *name field:
auth.c:64:1: warning: initialization discards qualifiers from pointer target type
auth.c:72:1: warning: initialization discards qualifiers from pointer target type
auth.c:81:1: warning: initialization discards qualifiers from pointer target type

Making the field const requires changing AuthorizationFromID to take
a const char ** pointer for the name argument which it sets to point
to the matching name entry.

Changing that argument requires changing its sole caller in the security
extension to pass the address of a const char * variable to it, which it
can do, since the only thing it does with the returned name is to pass
it back to the RemoveAuthorization function that already expects a const
char *name.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:10 -08:00
Alan Coopersmith
01834e99e4 os/access.c: replace acmp & acopy macros with memcmp & memcpy calls
No need to cast to char * now that all supported platforms use C89-standard
void * argument types, so just drop the casts from acmp & acopy macros,
which clears the gcc warnings for places const pointers were cast non-const:

access.c: In function 'DefineSelf':
access.c:786:3: warning: cast discards qualifiers from pointer target type
access.c:795:6: warning: cast discards qualifiers from pointer target type
access.c: In function 'NewHost':
access.c:1293:9: warning: cast discards qualifiers from pointer target type
access.c:1298:6: warning: cast discards qualifiers from pointer target type
access.c:1309:5: warning: cast discards qualifiers from pointer target type

Without the casts, acmp & acopy are just a funny way to write memcmp
& memmove, so drop the macros and inline the calls, taking care to
swap the first two arguments to memmove since it had swapped them.

Since all the calls to memmove end up being to non-overlapping memory
(mostly copying from an existing pointer to a newly allocated one),
replace those with memcpy.

And finally, don't actually call memcpy to copy 0 bytes from one place
to another, since that's just a waste of a perfectly good function call.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-12-12 17:03:09 -08:00
Alan Coopersmith
d829a7c5cb Move to autoconf standard function name checks & defines
Replace multiple methods of checking for functions with AC_CHECK_FUNCS
Replace multiple methods of selecting fallback funcs with AC_REPLACE_FUNCS
Replace HAS_* and NEED_* #defines with autogenerated HAVE_*

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Mikhail Gusarov <dottedmag@dottedmag.net>
Reviewed-by: Gaetan Nadon <memsize@videotron.ca>
2011-12-05 14:32:45 -08:00
Alan Coopersmith
cccafabd56 Mark arguments to fopen/popen/system wrappers as const char *
Silencing more gcc -Wwrite-strings warnings

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:06 -08:00
Alan Coopersmith
05d8a7f7a7 Convert a bunch of sprintf to snprintf calls
This batch is the straightforward set - others are more complex and
need more analysis to determine right size to pass.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:06 -08:00
Alan Coopersmith
f3cb512dc4 LogVMessageVerb: Fix const mismatch warning
"log.c", line 382: warning: assignment type mismatch:
	pointer to char "=" pointer to const char

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:06 -08:00
Alan Coopersmith
3d2d88029b AuthAudit: clean up string handling calls
The extra "out" pointer to redirect writes to the array isn't needed since
the removal of LBX (commit a9ed5a8790), and eliminating it allows more
logical use of sizeof(addr) in length-checked strlcpy & snprintf calls to
write to it.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:06 -08:00
Alan Coopersmith
780133f9ae 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>
2011-11-23 12:15:05 -08:00
Alan Coopersmith
6e6d732bac Convert strncpy/strncat to strlcpy/strlcat
As long as we're carrying around a compatibility copy in os/strl*.c,
might as well use them.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:05 -08:00
Alan Coopersmith
08093c25a9 Convert some malloc + strncpy pairs into strndup calls
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-11-23 12:15:05 -08:00
Alan Coopersmith
acde97a39d Add fallback implementation of strndup()
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Linux test code fixed by: Keith Packard <keithp@keithp.com>
2011-11-23 12:15:05 -08:00
Alan Coopersmith
7ee7fd1f4c Remove a couple Error() instances left behind by 09dbfcb0ad
Two instances found in the SIOCGIFCONF code for listing network interfaces.

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-11-23 12:15:05 -08:00
Rami Ylimäki
c1bb8f43b9 record: Prevent out of bounds access when recording a reply.
Any pad bytes in replies are written to the client from a zeroed
array. However, record extension tries to incorrectly access the pad
bytes from the end of reply data.

Signed-off-by: Rami Ylimäki <rami.ylimaki@vincit.fi>
Reviewed-by: Erkki Seppälä <erkki.seppala@vincit.fi>
2011-11-18 11:26:02 -08:00
Keith Packard
c841336204 Merge remote-tracking branch 'herrb/master' 2011-10-18 07:45:24 -07:00
Matthieu Herrb
b67581cf82 Fix CVE-2011-4029: File permission change vulnerability.
Use fchmod() to change permissions of the lock file instead
of chmod(), thus avoid the race that can be exploited to set
a symbolic link to any file or directory in the system.

Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2011-10-18 15:58:00 +02:00
Matthieu Herrb
6ba44b91e3 Fix CVE-2011-4028: File disclosure vulnerability.
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.

Signed-off-by: Matthieu Herrb <matthieu.herrb@laas.fr>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2011-10-18 15:58:00 +02:00
Jeremy Huddleston
09dbfcb0ad os: Remove Error()
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-10-11 21:23:46 -07:00
Keith Packard
9a55b3661b Merge remote-tracking branch 'alanc/master' 2011-10-03 11:49:23 -07:00
Keith Packard
afb1fe695d Merge remote-tracking branch 'whot/next' 2011-09-26 20:24:15 -07:00
Gaetan Nadon
84bb0207f6 dix and os: gitignore dix.O and os.O
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Gaetan Nadon <memsize@videotron.ca>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
2011-09-23 17:14:47 -07:00
Matt Turner
2c7c520cfe Use internal temp variable for swap macros
Also, fix whitespace, mainly around
	swaps(&rep.sequenceNumber)

Reviewed-by: Peter Harris <pharris@opentext.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>
2011-09-21 17:12:04 -04:00
Lennart Poettering
159b03e137 config: add udev/systemd multi-seat support
Add support for multi-seat-aware input device hotplugging. This
implements the multi-seat scheme explained here:

http://www.freedesktop.org/wiki/Software/systemd/multiseat

This introduces a new X server switch "-seat" which allows configuration
of the seat to enumerate hotplugging devices on. If specified the value
of this parameter will also be exported as root window property
Xorg_Seat.

To properly support input hotplugging devices need to be tagged in udev
according to the seat they are on. Untagged devices are assumed to be on
the default seat "seat0". If no "-seat" parameter is passed only devices
on "seat0" are used. This means that the new scheme is perfectly
compatible with existing setups which have no tagged input devices.

Note that the -seat switch takes a completely generic identifier, and
that it has no effect on non-Linux systems. In fact, on other OSes a
completely different identifier scheme for seats could be used but still
be exposed with the Xorg_Seat and -seat.

I tried to follow the coding style of the surrounding code blocks if
there was any one could follow.

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-08-22 15:56:49 +10:00
Daniel Kurtz
b31d104fc0 os/log: Add LogVHdrMessageVerb and friends
LogVHdrMessageVerb allows a custom header to be inserted in a log message,
between the Log system's MessageType string, and a formatted variable
message body. The custom header can itself be a formatted variable string.

These functions can be used, for example, by driver abstraction layers to
format specific driver messages in a standard format, but do it in a way
that is efficient, obeys the log-layers verbosity settings, and is safe
to use in signal handlers (because they don't call malloc), even for
types besides X_NONE.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-08-22 15:49:18 +10:00
Daniel Kurtz
b82f934db6 os/log: Pull LogMessageTypeVerbString out of LogVMessageVerb
Also, optimize how the type and format strings are combined.

Signed-off-by: Daniel Kurtz <djkurtz@chromium.org>
Reviewed-by: Guillem Jover <guillem@hadrons.org>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-08-22 15:48:14 +10:00
Peter Hutterer
f51e42f583 Terminate the log with one last message.
Instead of just closing the log when everything is done, put one more
message in stating that we're actually terminating. Users or scripts that
look at the Xorg.log will then know that a) the server has terminated
properly and b) why the server terminated (to some degree, given that most
real-world errors will be caused by AbortServer()).

Acked-by: Gaetan Nadon <memsize@videotron.ca>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Tested-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
Tested-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Reviewed-by: Jon TURNEY <jon.turney@dronecode.org.uk>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-07-27 09:31:02 +10:00
Dan Nicholson
7d5c8a12cb Don't use empty source files
When an empty _SOURCES variable is declared, automake will recognize that
only linking is needed.

Signed-off-by: Dan Nicholson <dbn.lists@gmail.com>
Tested-by: Jamey Sharp <jamey@minilop.net>
Reviewed-by: Daniel Stone <daniel@fooishbar.org>
Tested-by: Peter Hutterer <peter.hutterer@who-t.net>
2011-06-23 05:28:31 -07:00
Jeremy Huddleston
b47d2e43eb XQuartz: Make a copy of args for our crash reporter vsnprintf
Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-05-05 09:04:41 -07:00
Jeremy Huddleston
c524f8bb76 os: Silence warnings when building with clang
access.c:1492:20: error: equality comparison with extraneous parentheses [-Werror,-Wparentheses]
        if ((host->family == FamilyServerInterpreted)) {
             ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
access.c:1492:20: note: use '=' to turn this equality comparison into an assignment
        if ((host->family == FamilyServerInterpreted)) {
                          ^~
                          =
access.c:1492:20: note: remove extraneous parentheses around the comparison to silence this warning
        if ((host->family == FamilyServerInterpreted)) {
            ~             ^                         ~

In file included from xstrans.c:8:
In file included from /usr/X11/include/X11/Xtrans/transport.c:62:
/usr/X11/include/X11/Xtrans/Xtranssock.c:262:5: error: implicit declaration of function 'ErrorF' is invalid in C99
      [-Werror,-Wimplicit-function-declaration]
    PRMSG (3,"SocketSelectFamily(%s)\n", family, 0, 0);
    ^

log.c:180:29: error: format string is not a string literal [-Werror,-Wformat-nonliteral]
        if (asprintf(&logFileName, fname, display) == -1)
                                   ^~~~~
log.c:190:26: error: format string is not a string literal [-Werror,-Wformat-nonliteral]
                if ((asprintf(&suffix, backup, display) == -1) ||
                                       ^~~~~~
log.c:382:25: error: format string is not a string literal [-Werror,-Wformat-nonliteral]
        LogVWrite(verb, tmpBuf, args);
                        ^~~~~~

Signed-off-by: Jeremy Huddleston <jeremyhu@apple.com>
Reviewed-by: Jamey Sharp <jamey@minilop.net>
2011-04-25 10:45:34 -07:00
Tiago Vignatti
f603061e94 os: fix use after free in EstablishNewConnections
In the case of failure on AllocNewConnection, new_trans_conn cannot be
dereferenced because it's already freed. Swapping the order of this logic fix
the changes introduced in 04956b8043.

Signed-off-by: Tiago Vignatti <tiago.vignatti@nokia.com>
CC: Jeremy Huddleston <jeremyhu@freedesktop.org>
Reviewed-by: Jeremy Huddleston <jeremyhu@apple.com>
2011-04-07 19:57:38 +03:00
Tiago Vignatti
a6c71ce5d2 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>
2011-04-04 15:41:47 +03:00
Tiago Vignatti
bafec9a25e os: use DebugF for debugging
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>
2011-04-04 15:41:47 +03:00
Erkki Seppälä
2ef4ff45ef 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>
2011-03-27 18:16:36 -07:00