FFLAG_NEEDSYNC and fsync the file when select() next returns zero. This
dramatically speeds up the process of logging large amounts of data, while
leaving the essential semantics (that data can be expected to be on disk
if we crash) unchanged.
In my tests, this speeds up the rc phase of booting by 18-20%. [1]
YES PLEASE! by: phk [1]
explicitly fsynced after kernel messages are logged. This option
should be syntax compatible with a similar option in Linux syslogd.
I've made some small changes to Pekka's patch, hoepfully I haven't
goofed anything.
PR: 66790
Submitted by: Pekka Savola <pekkas@netcore.fi>
Obtained from: Martin Schulze's syslogd
MFC after: 1 month
Syslogd should ensure that f_file is a valid file descriptor when
f_type is FILE, CONSOLE, TTY and for a PIPE where f_pid > 0. If the
descriptor is closed/invalid then the type should be set to UNUSED
or the pid should be set to 0.
To this end:
1) Don't close(f->f_file) if we can't send a message to a remote
host because the file descriptor used for remote logging is
stored in finet, not in f->f_file. f->f_file is probably
uninitialised, so I guess we usually end up closing fd 0.
2) Don't close PIPE file descriptors if they are invalid.
3) If the call to p_open fails, don't set the pid.
The OpenBSD patches in this area set f_file to -1 after the fd is
closed and then avoids calling close if f_file < 0. I haven't done
this, but it might be a good idea too.
Inspired by: PR 67139/OpenBSD
1) Use strncpy on strings out of utmp.
2) Avoid running off the start of one string while removing white space.
(I've used slightly different code to OpenBSD here.)
3) Ignore trailing spaces in the priority.
PR: 67139
Submitted by: Xin LI <delphij@FreeBSD.org.cn>
Obtained from: OpenBSD
1) Don't check for getopt returning '?', we have a default case.
2) Check if the priority is LOG_KERN correctly - in practice
LOG_KERN is 0, so it makes no difference. OpenBSD fixed a
different nearby bug that we don't have 'cos our definition
of LOG_MAKEPRI is different to OpenBSD's.
Copy a comment from OpenBSD, observing that LOG_KERN is 0.
Inspired by PR: 67139
if the line doesn't match ^<%d>, then treat it as a regular kernel
printf line. Previously if a kernel printf message started with "<"
it would be interpreted as a log message, often with LOG_EMERG
level. This was triggered by some printfs in sys/dev/aic7xxx/, and
can also happen with the partial lines that result if syslogd cannot
keep up with the rate of arrival of kernel messages.
Reviewed by: dwmalone
MFC after: 1 week
is possible for an error to occur while trying to log an error, and
this can result in infinite recursion (or at least until we run out
of stack).
Rather than this, we ignore requests to log an error while logging an
error.
PR: 51253
MFC after: 2 weeks
1. Hostnames were not treated case insensitively in all cases.
2. The method for stripping hostnames when reading the syslog.conf
differed from that when finding the hostname of an incoming request.
This lead to a broken match check. In my case, it meant I had to
have '@scooter.smi.example.com.example.com' to have 'logger.example.com'
properly save messages from 'scooter.smi.sendmail.com'.
3. Add paranoia to cfline() such that it doesn't try to access memory
outside of the bounds of the f_host string.
4. While I am here, get rid of an outdated comment, argv[{0,1,2}] are now
checked for NULL after the strdup() calls.
Reviewed by: dwmalone
MFC after: 1 week
revision 1.101 (which did not introduce the bug but made it harder to fix)
PR: misc/40363
Submitted by: David Dunham <dwdunham@isilon.com>
MFC after: 2 weeks
that already exists for hosts: being able to specify a section that applies
to every program *except* the one in question.
The normal syntax for program specification is still valid. For the new
capability, one uses:
!-program
Since there is no way to specify a program beginning with a dash in the old
syntax, as it would be interpreted as the case above, the following
alternative syntax to the original capability is provided:
!+program
This shouldn't introduce incompatibilities with any syslogd configuration
in production because -stable's syslogd does not support a dash anywhere in
the program specification.
MFC after: 2 weeks
for it.
While I'm here, add a the ability to say "!level" in a way which
should be compatible with Linux's syslogd.
PR: 28935
No objections: audit
MFC after: 2 weeks
EHOSTDOWN. These are often transient errors (when the remote host
reboots, temporary network problems, etc.), and we'd rather err on the
side of caution and keep trying send messages that never arrive than
just give up.
Note that this is not an implementation of the "back-off" methods
given in the PR. Those just seem too complicated. Why not just keep
trying each time? Trying and failing doesn't really consume
significantly more resources than if we were successful for each
message.
PR: bin/31029
MFC after: 1 week
do not stop copying it into a buffer when encountering a
non-alphanumerical character. Only stop at unprintable characters.
This makes syslogd work correctly with executables like `interp.bin',
`httpd_old', etc.
PR: misc/40941
MFC after: 1 week
with the old behavior available via the -o option (it might still be
useful if one has many kernels and cares which messages came from
which). If the boot file is not used as the prefix, it is still
logged once at startup.
This change is prompted by the fact that the boot file is now much
longer ("/boot/kernel/kernel" vs. "/kernel"), which significanlty
bloats the syslogd output.
Reviewed by: peter
than really solve it. This approach (inspired by Ruslan's patch) solves
the real problem by stripping the local domain off the host name in the
config line structure.
Also mark a bunch of code sections that either do not check the return value
of a strdup(), malloc() or calloc() call, or do not properly handle a NULL
return.
1.64, i.e. July of last year. Also fix a minor style bug in the same code.
PR: bin/28634
Pointy hat to: dwmalone
Pointed out by: my buggy DSL router's remote logging facility
__unused, and change local variables named `sin' (struct
sockaddr_in) to `sin4'. (`sin' conflicts with the definition of
sin(3), which gcc assumes to be defined even if math.h isn't
included (it's a builtin). This is probably a bug in gcc.)
- Apply WARNS=1. WARNS=2 was not used because this program assigns
string literals to (struct iovec).iov_base for writing, and the only
clean way to silence -Wwrite-strings in that case would be to
strdup() and consequently free() those literals, which I considered
too disruptive.
Reviewed by: bde (partially)
the system on which it is running. The hostname is reloaded when
'HUPped' and a log message generated to note a change (before anyone
points it out, this is not an added security feature).
PR: bin/24444
Reviewed by: freebsd-audit
Approved by: ru
MFC after: 2 weeks
- Lose any stray host bits that a user may have entered when providing
a network number and netmask to the `-a' option for IPv6. This is
corresponding to 1.79 that is for IPv4 only.
MFC after: 1 week
user unless they come directly from the kernel. Document this and
add a flag to syslogd which prevents this conversion.
Sort getopt args while I'm at it.
PR: 21788
Submitted by: Andre Albsmeier <andre.albsmeier@mchp.siemens.de>
Remove extra parens from my host selection commit.
Add white space after if, while, for and switch.
Get rid of braces around a single statement if.
There should be no functional changes in this commit.
Reviewed by: sheldonh
