Commit Graph

128 Commits

Author SHA1 Message Date
bapt
6fdc031751 Convert sbin/ to LIBADD
Reduce overlinking
2014-11-25 11:23:12 +00:00
asomers
ab6d2528d2 Misc fixes suggested by Coverity.
sbin/devd/tests/client_test.c
	* In the event that popen fails, don't dereference its return value.
	* Fix array overwrite in the stream and seqpacket tests.
	* Close sockets at the end of successful ATF tests.

Reported by:	Coverity scan
CID:		1232019, 1232020, 1232029, 1232030
MFC after:	1 week
Sponsored by:	Spectra Logic
2014-08-20 17:04:49 +00:00
bz
bd04c6de5d Remove bogus ; at the end of the if condition in order to unbreak gcc builds
after r270004.

MFC after:	4 days
X-MFX with:	r270004
2014-08-15 10:01:33 +00:00
asomers
c511ec0ad8 Convert devd's client socket to type SOCK_SEQPACKET.
This change consists of two merges from projects/zfsd/head along with the
addition of an ATF test case for the new functionality.

sbin/devd/tests/Makefile
sbin/devd/tests/client_test.c
	Add ATF test cases for reading events from both devd socket types.

r266519:
sbin/devd/devd.8
sbin/devd/devd.cc
	Create a new socket, of type SOCK_SEQPACKET, for communicating with
	clients. SOCK_SEQPACKET sockets preserve record boundaries,
	simplying code in the client. The old SOCK_STREAM socket is retained
	for backwards-compatibility with existing clients.

r269993:
sbin/devd/devd.8
	Fix grammar bug.

CR:		https://reviews.freebsd.org/rS266519
MFC after:	5 days
Sponsored by:	Spectra Logic
2014-08-14 22:33:56 +00:00
dim
d8bb143013 Revert r263694, and apply a better fix to squelch unnecessary warnings
from clang about possible keywords being treated as identifiers for the
remainder of the translation unit (a.k.a. -Wkeyword-compat), when using
libstdc++ in combination with -Wsystem-headers.  This will not only fix
devd, but any C++ program using libstdc++.

MFC after:	3 days
X-MFC-With:	r263694
2014-03-26 19:31:33 +00:00
mjg
00964cfdfb Update userspace users of hw.bus.devctl_disable.
This fixes breakage resulting from r263754.

Reported by:	AN <andy@neu.net>
Reviewed by:	imp
Pointy hat to:	me
2014-03-26 02:25:40 +00:00
dim
64e77380a7 Apply a temporary band-aid for building devd with clang 3.4, libstdc++
and -Wsystem-headers enabled (which is the default for any non-zero
WARNS level, crazily enough!).  This is primarily meant to be MFC'd as
soon as possible.

MFC after:	3 days
2014-03-24 20:30:39 +00:00
asomers
94889417b9 sbin/devd/devd.8
sbin/devd/devd.cc
	Add a -q flag to devd that will suppress syslog logging at
	LOG_NOTICE or below.

Requested by:	ian@ and imp@
MFC after:	3 weeks
Sponsored by:	Spectra Logic Corporation
2014-03-07 23:30:48 +00:00
asomers
ba9a398e57 sbin/devd/devd.cc
Promoting the SIGINFO handler's log message from LOG_INFO to
	LOG_NOTICE, and promoting the "Processing event ..." message from
	LOG_DEBUG to LOG_INFO.  Setting the logfile to LOG_NOTICE with this
	change will have the same result as setting it to LOG_INFO without
	this change.  Setting it to LOG_INFO with this change will include
	the useful "Processing event ..." messages that were previously at
	LOG_DEBUG, without including useless messages like "Pushing table".

	The intent of this change is that one can log "Processing event ..."
	without logging "Pushing table" and related messages that are sent
	for every event.  The number of lines actually logged is reduced by
	about 75% by making this change and setting syslog to LOG_INFO vs
	setting syslog to LOG_DEBUG.

etc/syslog.conf
	Changing the recommended loglevel to notice instead of info.

Sponsored by:	Spectra Logic Corp
MFC after:	4 weeks
2013-12-13 22:58:57 +00:00
asomers
e12149b5f4 sbin/devd/devd.cc
Increase the size of devd's client socket's send buffer from the
	default (8k) to 128k.  This prevents clients from getting
	POLLHUPped during event storms.  For example, during zpool creation,
	the kernel emits a resource.fs.zfs.statechange event for every vdev
	in the pool.  A 128k buffer is large enough to hold the statechange
	events for a pool with nearly 800 drives.

Reviewed by:	ian, imp
Approved by:	ken (mentor)
Sponsored by:	Spectra Logic Corp
MFC after:	4 weeks
2013-12-13 21:49:41 +00:00
avg
ef49ef7199 devd: lower priority of action execution logging to info
Reviewed by:	asomers
2013-11-07 16:24:31 +00:00
avg
57892feb9b devd: fix a typo in a comment
Reviewed by:	asomers
2013-11-07 16:22:04 +00:00
asomers
801a6742bc Correct the printf format specifier for total_events.
Add __printflike argument checking for devdlog().

Reported by: pjd
Approved by: gibbs (co-mentor)
2013-07-08 21:10:30 +00:00
asomers
9906aefa83 Explicitly include <cstdarg> to fix compilation with libc++. It is implicitly
included by libstdc++.

Reported By: Oliver Hartmann
Approved by: gibbs (co-mentor, implicit)
2013-07-02 14:48:39 +00:00
asomers
43aec3b2a7 style(9) fixes, including the removal of page break characters. No functional
changes.

Approved by:	gibbs (co-mentor)
2013-07-01 21:49:17 +00:00
asomers
ac1ae1504a Add a SIGINFO handler to devd. It will send useful statistics to syslog or
stderr as appropriate.  Currently, the only statistic printed is the number of
events received.

Reviewed by:	eadler
Approved by:	gibbs (co-mentor)
2013-07-01 21:33:05 +00:00
asomers
16596db60f Add syslog(3) support to devd(8).
sbin/devd/devd.cc
        All output will now go to syslog(3) if devd is daemonized, or stderr
        if it's running in the foreground.

sbin/devd/devd.8
        Remove the "-D" flag.  Filtering messages by priority now
	happens in the usual syslog way.  For performance reasons, a few
	extra-verbose debugging statements are now conditional on the "-d" (do
	not daemonize) flag.

etc/syslog.conf
etc/newsyslog.conf
        Direct messages from devd(8) to /var/log/devd.log, but leave it
        disabled by default

Reviewed by:	eadler
Approved by:	gibbs (co-mentor)
MFC after:	never (removed a command-line option from devd)
2013-07-01 21:20:17 +00:00
jkim
eb004e0f13 Improve compatibility with recent flex from flex.sourceforge.net. 2013-05-03 23:51:32 +00:00
eadler
ce753441d5 Prefer using the C++ version of the standard headers. These place the
names within the std namespace (and possibly within the global
namespace).

The main advantage is that the C++ versions can provide optimized
versions or simplified interfaces.
2013-05-02 17:02:50 +00:00
asomers
2f761a801b According to devctl(4), clients must read events whole; they may not
piece them together from multiple reads().  It's as if /dev/devctl is
a datagram device instead of a stream device.  However, devd's
internal buffer was too small (1025 bytes) to read an entire
ereport.fs.zfs.checksum event (variable, up to ~1300 bytes).  This
commit enlarges the buffer to 8k.

Reviewed by:	imp
Approved by:	ken (mentor)
MFC after:	2 weeks
2013-04-26 19:49:37 +00:00
eadler
ed67ac528d devd: Correct typo in comment.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:31 +00:00
eadler
a3065a2b58 devd: Use simpler dst += *x instead of str.append(x, 1).
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:29 +00:00
eadler
d359c8655e devd: Use string::empty() instea of string::length() == 0.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:26 +00:00
eadler
d75b737f54 devd: Remove unnecessary empty default constructors.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:24 +00:00
eadler
b8332b3b8a devd: Remove empty virtual destructor from class, which has noch subclasses.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:22 +00:00
eadler
447034a196 devd: Avoid unnecessary temporary objects (and simplify the code) when handling std::string.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:19 +00:00
eadler
01afb73f51 devd: Use the standard constructor of std::string instead of string("").
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:17 +00:00
eadler
229e6c1666 devd: Simplify while (1) { if (x) break; } to while (!x) {}.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:15 +00:00
eadler
8f1c733aff devd: Remove call to _exit() from signal handler, which also sets a stop flag.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:12 +00:00
eadler
707e0c270a devd: Use volatile sig_atomic_t for the flag set by a signal handler.
Submitted by:	Christoph Mallon <christoph.mallon@gmx.de>
Approved by:	cperciva (mentor)
2013-03-04 02:21:08 +00:00
eadler
5175512e23 Constify where possible.
Approved by:	cperciva (mentor)
2013-03-04 02:19:55 +00:00
pluknet
e80b822e8b Reflect CARP media-type departure.
X-MFC after:	never
2013-02-21 21:35:09 +00:00
pluknet
d9f661c57a Separate items in the list of System values with .Pp to ease readability. 2013-02-21 20:45:19 +00:00
zeising
e05b8f83c1 Bump .Dd for the change in r246121.
Approved by:	joel (mentor)
2013-02-05 14:29:37 +00:00
ian
85fcf6286d Improve devd startup time, by tweaking some string handling routines that are
heavily used when parsing config files.  Mostly these changes avoid making
temporary copies of the strings, and avoid doing byte at a time append
operations, on the most-used code path.

On a 1.2 GHz ARM processor this reduces the time to parse the config files
from 13 to 6 seconds.

Reviewed by:	imp
Approved by:	cognet (mentor)
2013-01-30 23:37:35 +00:00
ian
3e5ced1b98 Fix a descriptor leak in devd. Clients reading /var/run/devd.pipe can close
their socket connection any time, and devd only notices that when it gets an
error trying to write an event to the client.  On a system with no device
change activity, clients could connect and disappear repeatedly without devd
noticing, leading to an ever-growing list of open socket descriptors in devd.

Now devd uses poll(2) looking for POLLHUP on all existing clients every time
a new client connection is established, and also periodically (once a minute)
to proactively find zombie clients and reap the socket descriptors.  It also
now has a connection limit, configurable with a new -l <num> command line arg.
When the maximum number of connections is reached it stops accepting new
connections until some current clients drop off.

Reviewed by:	imp
Approved by:	cognet (mentor)
2013-01-30 15:21:18 +00:00
eadler
d63ec4c24b Prefer the use of initalizer lists to ctor assignment.
Approved by:	cperciva
MFC after:	2 weeks
2012-12-06 01:25:21 +00:00
eadler
76f827328b Avoid the creation of a temporary object by using the prefix operator
for non-primitive types.

Approved by:	cperciva
MFC after:	2 weeks
2012-12-06 01:25:17 +00:00
eadler
be40a13e59 Constify where possible
Approved by:	cperciva
MFC after:	2 weeks
2012-12-06 01:25:14 +00:00
dim
ab2b1f57e9 Fix an old bug in devd, where it uses std::sort() to sort the various
lists it reads from its configuration files on the priority field.

Because some items in the lists have the same priority, and std::sort()
is not stable, the exact order in which the items are enumerated does
not have to correspond to the order they appear in the configuration
files.

Apparently this was never noticed with libstdc++, but with libc++ it
could cause the "uhid" entry from /etc/devd/usb.conf to be used instead
of the "ums" entry (which is earlier in the file).  This caused the
problem described in the PR: the USB mouse module was never loaded, and
the other actions (such as starting moused) were not executed.

To fix the problem, make devd use std:stable_sort() instead.

Reported by:	Jan Beich <jbeich@tormail.org>
PR:		bin/172958
MFC after:	2 weeks
2012-12-05 20:50:40 +00:00
avg
04a3ee8c86 document acpi_cpu devd notification about _CST change
Based on prodding and a submission by Lars Engels <lars.engels@0x20.net>.

MFC after:	5 days
2012-10-20 09:40:34 +00:00
pjd
66da4b41b3 Use O_CLOEXEC for open instead of separate fcntl(2) call. 2012-09-22 12:42:51 +00:00
dim
2c17ed141e Make devd build with libc++.
MFC after:	3 days
2012-06-01 06:56:35 +00:00
bapt
310ab6d7ff Fix world after byacc import:
- old yacc(1) use to magicially append stdlib.h, while new one don't
- new yacc(1) do declare yyparse by itself, fix redundant declaration of
  'yyparse'

Approved by:	des (mentor)
2012-05-22 16:33:10 +00:00
glebius
6700bd7ced Fix build. 2012-01-06 15:01:05 +00:00
maxim
473a67378d o Sort .Xrs. 2011-12-19 05:09:08 +00:00
dim
32859c5990 In sbin/devd/devd.h, 'event_proc' and 'eps' are declared as structs. In
devd.hh, there are redeclared as classes.  Fix the inconsistency.

MFC after:	1 week
2011-12-17 01:54:51 +00:00
glebius
8e22f12db2 Xref re_format(7) in devd.conf(5), not in devd(8).
Pointy hat to:	glebius
2011-12-16 10:21:01 +00:00
glebius
014ced0760 Xref re_format(7). 2011-12-16 10:14:41 +00:00
hrs
fb5f47d254 - Add support for a "!" character in regex matching in devd(8). It inverts
the logic (true/false) of the matching.

- Add "!usbus[0-9]+" to IFNET ATTACH notification handler in the default
  devd.conf to prevent rc.d/netif from running when usbus[0-9]+ is attached.

Reviewed by:	imp
2011-10-26 02:11:28 +00:00