by Sheldon.
For a detailed description look at the commit log for sysctl.c
rev.1.42 -- i do not think it is appropriate to put the full
description in this manpage, and the "boot" and "loader" manpages
where this description might go are also missing a description of
a number of similar variables, so i think this it is ok to limit
documentation to this now, and update it later when I (or someone
else) have a chance to revise "boot" and "loader".
machdep.guessed_bootdev, and add code to sysctl to parse its value
and give a (not necessarily correct) name to the device we booted
from (the main motivation for this code is to use the info in the
PicoBSD boot scripts, and the impact on the kernel is minimal).
NOTE: the information available in bootdev is not always reliable,
so you should not trust it too much. The parsing code is the same
as in boot2.c, and cannot cover all cases -- as it is, it seems to
work fine with floppies and IDE disks recognised by the BIOS. It
_should_ work as well with SCSI disks recognised by the BIOS.
Booting from a CDROM in floppy emulation will return /dev/fd0 (because
this is what the BIOS tells us).
Booting off the network (e.g. with etherboot) leaves bootdev unset so
the value will be printed as "invalid (0xffffffff)".
Finally, this feature might go away at some point, hopefully when we
have a more reliable way to get the same information.
MFC-after: 5 days
src/contrib/isc-dhcp/includes/minires/resolv.h has a 'extern' definition
but it makes an error when linking crunched binary just like this:
dhclient.lo: In function `MRres_nquery':
dhclient.lo(.text+0x2dcce): undefined reference to `__h_errno_set'
dhclient.lo(.text+0x2dd5b): undefined reference to `__h_errno_set'
dhclient.lo: In function `MRres_nquerydomain':
dhclient.lo(.text+0x2de53): undefined reference to `__h_errno_set'
The author understands this will be a problem (see comments in resolv.h).
Murray said that the author will fix this, but as a temporary solution,
modifying the source code and not to use __h_errno_set.
BTW, I'm sorry that previous commitlog in src/sbin/dhclient/Makefile should
read "Found by:" instead of "Confirmed by"; I just found that rev 1.15
has a typo so fixed.
Tested on: ushi.jp.FreeBSD.org with today's 5-current source code.
(belive me, "make release.4" works fine now)
spares (the size of the field was changed from u_short to u_int to
reflect what it really ends up being). Accordingly, change users of
xucred to set and check this field as appropriate. In the kernel,
this is being done inside the new cru2x() routine which takes a
`struct ucred' and fills out a `struct xucred' according to the
former. This also has the pleasant sideaffect of removing some
duplicate code.
Reviewed by: rwatson
deprecated in favor of the POSIX-defined lowercase variants.
o Change all occurrences of NTOHL() and associated marcros in the
source tree to use the lowercase function variants.
o Add missing license bits to sparc64's <machine/endian.h>.
Approved by: jake
o Clean up <machine/endian.h> files.
o Remove unused __uint16_swap_uint32() from i386's <machine/endian.h>.
o Remove prototypes for non-existent bswapXX() functions.
o Include <machine/endian.h> in <arpa/inet.h> to define the
POSIX-required ntohl() family of functions.
o Do similar things to expose the ntohl() family in libstand, <netinet/in.h>,
and <sys/param.h>.
o Prepend underscores to the ntohl() family to help deal with
complexities associated with having MD (asm and inline) versions, and
having to prevent exposure of these functions in other headers that
happen to make use of endian-specific defines.
o Create weak aliases to the canonical function name to help deal with
third-party software forgetting to include an appropriate header.
o Remove some now unneeded pollution from <sys/types.h>.
o Add missing <arpa/inet.h> includes in userland.
Tested on: alpha, i386
Reviewed by: bde, jake, tmm
after an EOT-terminated volume. We keep track of the current record
number, and synchronise it with the c_tapea field each time we read
a header. Avoid the use of c_firstrec because some bugs in dump can
cause it to be set incorrectly.
Move the initialisation of some variables to avoid compiler warnings.
volume if we missed some earlier tapes (the user can still enter
'none' later if the tapes are unavailable). Previously with 'x'
restores, we might not ask for all tapes if the tapes are supplied
in reverse order.
Clarify the message that describes what volume should be mounted
first; reverse order is only efficient when extracting a few files.
for monitoring automated backups. This is based on a patch by Mikhail
Teterin, with some changes to make its operation clearer and to
update the proctitle more frequently.
PR: bin/32138
volumes are available, instead of getting stuck in a loop calling
getvol(). Normally restore in 'x' or 'i' modes will ask for a new
(earlier) volume when the current inode number on the tape is greater
than the last inode to be restored, since there can be no further
inodes of interest on that volume. However we don't want to change
volumes in this case either if the user explicitly said that there
are no more tapes, or if we are looking at the first volume.
When no more volumes are available but there are still inodes that
we have not found, we now just fall through to the code that prints
out a list of any missing files, so the restore completes normally.
Also simplify the logic a bit by always returning to the start of
the main for(;;) loop whenever the volume has changed.
This should completely fix the "Changing volumes on pipe input" bug
that is often observed when restoring dumps of active filesystems.
PR: bin/4176, bin/34604, misc/34675
to multi-volume restores:
- In findinode(), keep a copy of header->c_type so that we don't
exit the do-while loop until we have processed the current header.
Exiting too early leaves curfile.ino set to 0, which confuses
the logic in createfiles(), so multi-volume restores with the
'x' command don't work if you follow the instructions and supply
the tapes in reverse order. This appears to have been broken
by CSRG revision 5.33 tape.c (Oct 1992).
- The logic in getvol() for deciding how many records to skip after
the volume header was confused; sometimes it would skip too few
records and sometimes too many, leading to "resync restore"
warnings and missing files. Skip to the next header only when
the current action is not `USING'. Work around a dump bug that
sets c_count incorrectly in the volume header of the first tape.
Some of the problems here date back to at least 1991.
- Back out revision 1.23. This appeared to avoid warnings about
missing files in the 'rN' verification case, but it made the
problems with the 'x' command worse by stopping getvol() from
even attempting to find the first inode number on the newly
inserted tape. The bug it addressed is fixed by correcting the
skipping logic as described above.
- Save the value of `tpblksread' in case the wrong volume is
supplied, because it is incremented each time we read a volume
header. We already saved `blksread' for the same reson.
Normally trewind() performs a close-open-close cycle to rewind the
tape when closing the device, but this is not ideal for fifos. We
now skip the final open-close if the output descriptor is a fifo.
PR: bin/25474
Submitted by: Alex Bakhtin <bakhtin@amt.ru>
MFC after: 1 week
blocks allocated by some inode. Indirect blocks are printed
recursively, so beware :), the list could become lengthy...
(We should probably add some output pager to fsdb.)
MFC after: 1 month
bloats the resulting binary file by forcing them out of .bss into
.data, while the C standard already guarantees them to become
initialized to 0 at program startup.
MFC after: 1 week
Cure the "lets put everything in registers" ailment.
Set WARNS=2
Fix two problems where casting messed up large quotafiles.
PR: 34108
Submitted by: Maxim Katargin <kmv@asplinux.ru>
MFC after: 3 weeks
This works by retokenizing a line with a split limit so that if the
argument count for a command is greater than the number of arguments
formed by splitting apart the line of user input, the last argument
is instead all of the remainder of the input line.
Yes, I needed this capability at one point to fix a filesystem manually,
which happened to break with a problematic space-containing directory
entry.
This allows obtaining crash dumps from the panics occured during late stages
of kernel initialisation before system enters into single-user mode.
MFC after: 2 weeks
Any of readfds, writefds, and exceptfds may be given as nil
pointers if no descriptors are of interest.
neither wfds nor efds were of interest so now they are nil.
also, do a little better then making an educated guess for nfds.
time_to_xxx() and xxx_to_time() functions. e.g. _time_to_xxx()
instead of time_to_xxx(), to make it more obvious that these are
stopgap functions & placemarkers and not meant to create a defacto
standard. They will eventually be replaced when a real standard
comes out of committee.
camcontrol.
This enables rescanning all busses or resetting all busses in a system.
The current implementation is not the ideal way to do it -- the ideal way
to do it would be for the transport layer to handle wildcarded busses on
bus rescan and reset operations. The current implementation enumerates all
the busses and sends a rescan or reset CCB individually. Handling this
behavior in the transport layer will happen later.
Reviewed by: imp
Tested by: joerg
MFC after: 1 week
socket so that routing daemons and other interested parties
know when an interface is attached/detached.
PR: kern/33747
Obtained from: NetBSD
MFC after: 2 weeks
variable RELEASE_BUILD_FIXIT is defined, a camcontrol binary will be
built that only knows the "rescan" and "reset" subcommands. The
resulting code is small enough to still fit onto the boot floppy.
Reviewed by: ken
MFC after: 1 week
not return ENOBUFS for unreliable protocols like divert.
This should fix an issue when natd(8) keeps spamming already
full dummynet(4) queues with the same packet forever.
Spotted by: chkno@dork.com
Explained by: luigi
Reviewed by: Ari Suutari <ari.suutari@syncrontech.com>
MFC after: 2 weeks
The first "synopsis" example has a "[/prefixlength]" which shouldn't
be there, since that stuff is part of the preceeding "address" as is
explained in the description of "address".
(The way it is now, 192.168.0.1/16/prefixlength would be a proper
operand. Note that "prefixlength" is not mentioned by name anywhere.)
PR: 32462
Submitted by: Gary W. Swearingen <swear@blarg.net>
disklabel(8)'s "Reading the disk label" section starts out "To examine
or save the label on a disk drive,...". This is confusing. The given
command (disklabel [-r] disk) doesn't save anything (except to standard
out, but that should go without saying). It reads as if the command
might save something on the disk drive.
PR: 32452
Submitted by: Gary W. Swearingen <swear@blarg.net>
reinserted by a userland process, will lose a number of packet
attributes, including their source interface. This may affect
the behavior of later rules, and while not strictly a BUG, may
cause unexpected behavior if not clearly documented. A similar
note for natd(8) might be desirable.
ipfirewall(4) to the IMPLEMENTATION NOTES section because it
considers kernel internals and may confuse newbies if placed
at the very beginning of the manpage (where it used to be previously.)
Not objected by: luigi
a packed array so sizeof work. This broke RFMON mode and passing
up 802.11 packets.
The Linux emulation code was derived from the open source Linux driver to
maintain compatibility.
LEAP support is added, hints from Richard Johnson. I've verified this
locally with PC350v42510.img firmware. More bug fixing from Marco to
fix long passwords.
Change DELAYs in flash part of driver to FLASH_DELAY which uses tsleep
so it doesn't look like your system died during a flash update.
Install header files in /usr/include/dev/an
Cleanup some ifmedia bugs add "Home" key mode to ifmedia and ancontrol.
This way you can manage 2 keys a little easier. Map the home mode into
key 5. Enhance ifconfig to dump the various configured SSIDs. I use
a bunch of different ones and roam between them. Use the syntax similar
to the WEP keys to deal with setting difference SSIDs.
Bump up up the Card capabilities RID since they added 2 bytes to it
in the latest firmware. Thankfully we changed it from a terminal
failure so the card still worked but the driver whined.
Some cleanup patches from Marco Molteni.
Submitted by: Richard Johnson <raj@cisco.com>
Marco Molteni <molter@tin.it>
and myself
Various checks: David Wolfskill <david@catwhisker.org>
Reviewed by: Brooks Davis <brooks@freebsd.org>
Warner Losh <imp@freebsd.org>
Approved by: Brooks Davis <brooks@freebsd.org>
Warner Losh <imp@freebsd.org>
Obtained from: Linux emulation API's from Aironet driver.
of unused partition entries and later detection of unused entries.
Use memcpy to be consistent with the rest of the code, and fix a
minor style nit.
Submitted by: bde
a special file on the command line, eg:
sysctl kern.dumpdev=/dev/ad1s1b
In parse(), when a value is given for a CTLTYPE_QUAD variable,
newval and newsize erroneously fail to be set because of an early
"break".
show_var() contains code that duplicates the functionality of the
oidfmt() function.
PR: 33151, 33150
Submitted by: Thomas Quinot <thomas@cuivre.fr.eu.org>
variables. Use the -d flag in sysctl(8) to see this information.
Possible extensions to sysctl:
+ report variables that do not have a description
+ given a name, report the oid it maps to.
Note to developers: have a look at your code, there are a number of
variables which do not have a description.
Note to developers: do we want this in 4.5 ? It is a very small change
and very useful for documentation purposes.
Suggested by: Orion Hodson
Fair Queueing) and RED (Random Early Detection) to both give the reader
a hint what they are and to make it easier to find out more information
about them.
16384/2048.
Following recent discussions on the -arch mailing list, involving dillon
and mckusick, this change parallels the one made over a decade ago when
the default was bumped up from 4096/512.
This should provide significant performance improvements for most
folks, less significant performance losses for a few folks and
wasted space lost to large fragments for many folks.
For discussion, please see the following thread in the -arch archive:
Subject: Using a larger block size on large filesystems
The discussion ceases to be relevant when the issue of partitioning
schemes is raised.
This flag adds a pausing utility. When ran with -p, during the kernel
probing phase, the kernel will pause after each line of output.
This pausing can be ended with the '.' key, and is automatically
suspended when entering ddb.
This flag comes in handy at systems without a serial port that either hang
during booting or reser.
Reviewed by: (partly by jlemon)
MFC after: 1 week
are sometimes incorrectly being dumped.
The problem arises because the subdirectory only gets its entry
cleared from usedinomap if it is also present in dumpinomap, and it is
the absence of a directory in usedinomap that internally indicates
that the directory is under the effects of UF_NODUMP (either directly
or inherited).
PR: 32414
Submitted by: David C Lawrence <tale@dd.org>
recovery code) back in March, 2001.
In effect, this brain-o would cause 'camcontrol defects' to always return
an error.
Pointed out by: joerg
Tested by: mdodd
were only of benefit to large filesystems, which recent research
suggests is not the case, and which the original author of the text
no longer endorses.
size ratio other than 8:1. Currently, we only recommend an 8:1
ratio, because the impact of others ratios has not been adequately
investigated.
Also, do not recommend the use of the -c option in the example, since
newfs now automatically calculates the best cyl:cylgrp ratio.
This change was discussed with the author of rev 1.29.
These were mainly missing casts or wrong format strings in printf
statements, but there were also missing includes, unused variables,
functions and arguments.
The choice of `long' vs `int' still seems almost random in a lot
of places though.
directory is encountered. This includes the full path of the
directory that will be removed if the user answers "y" to the
"REMOVE?" question.
PR: bin/226851
Submitted by: KOIE Hide <hide@koie.org>
MFC after: 1 week
not listed in /etc/fstab. Previously, the user would be greeted
with "DUMP: bad sblock magic number" when dump tried to parse
the directory contents as an FFS filesystem.
PR: bin/12789
Submitted by: Bob Willcox <bob@pmr.com>
This works for wi(4), but apparantly other wireless drivers seem to do
the right thing.
Submitter and yours truly both got Mislead(tm).
Submitted by: udp <udp@sneakerz.org>
to avoid the need for rpc.lockd to perform client locks. Using
this option a user can revert back to using local locks for NFS mounts
like we did before we had rpc.lockd.
inode type bits set. Previously it would let you set IFMT bits (but
not clear them). The `chtype' command should be be used instead
for changing the inode type; having chmod half-work only causes
confusion.
MAKEDEV and sys/conf/majors, not sys/conf/device.<arch>, which has
never existed in the history of FreeBSD (well, at least it isn't in
the repository).
PR: 31558
Set 'log_ipfw_denied' option if you want the old behaviour.
PR: 30255
Submitted by: Flemming "F3" Jacobsen <fj@batmule.dk>
Reviewed by: phk
MFC after: 4 weeks
such a way that the name and the value of the variable(s) are separated
with `=' instead of the usual `: '. This is useful for producing output
that can be fed back to the sysctl utility (pasted to sysctl.conf, for
example).
Reviewed by: rwatson
Approved by: markm
MFC after: 2 weeks
header for the case where sizeof(time_t) != sizeof(int). dumprestore.h
was embedding time_t when it should have been embedding int32_t.
Use time_to_time32() and time32_to_time() to convert between the
protocoll/file-format time and time_t.
index, then retrieve statistics for that index, rather than retrieving
all interfaces and then looking for a matching name. This allows the
user to refer to an interface via an alias name.
While I'm here, also perform a few assorted cleanups.
spin in a loop eating CPU time. This bug has existed since the
TI-RPC import. The problem is that we should only enter the select
loop if at least one TCP server was started. Fix this by having
the master nfsd become a UDP server itself if there are no TCP
servers.
Also improve/correct the code for cleaning up slave nfsd processes
and unregistering with rpcbind when the master nfsd exits.
One issue that remains open is that if a slave nfsd dies, then all
nfsds will shut down. This is because nfssvc() in the master nfsd
returns 0 when the master nfsd receives a SIGCHLD.
Submitted by: tmm
1) Allow the sending of more than one control message at a time
over a unix domain socket. This should cover the PR 29499.
2) This requires that unp_{ex,in}ternalize and unp_scan understand
mbufs with more than one control message at a time.
3) Internalize and externalize used to work on the mbuf in-place.
This made life quite complicated and the code for sizeof(int) <
sizeof(file *) could end up doing the wrong thing. The patch always
create a new mbuf/cluster now. This resulted in the change of the
prototype for the domain externalise function.
4) You can now send SCM_TIMESTAMP messages.
5) Always use CMSG_DATA(cm) to determine the start where the data
in unp_{ex,in}ternalize. It was using ((struct cmsghdr *)cm + 1)
in some places, which gives the wrong alignment on the alpha.
(NetBSD made this fix some time ago).
This results in an ABI change for discriptor passing and creds
passing on the alpha. (Probably on the IA64 and Spare ports too).
6) Fix userland programs to use CMSG_* macros too.
7) Be more careful about freeing mbufs containing (file *)s.
This is made possible by the prototype change of externalise.
PR: 29499
MFC after: 6 weeks
name is "mount_mfs" or "mfs". Previously, the condition was that
the program name must start with "mount_", but this both missed
the case where mount(8) invokes mdmfs with argv[0] = "mfs", and it
included cases such as "mount_md" where compatibility is not
required.
Reviewed by: dd
a block or character device; the rest of tunefs works just fine on
filesystem images in regular files. Instead, if getfsfile() failed
and if the specified filesystem is a directory then print a more
useful "unknown file system" error.
Also, _PATH_DEV already contains a trailing slash, so don't add
another one when constructing a device path, and use errx() instead
of err() in a case where errno is meangingless.
addresses (and the macros that ipfw(4) use to lookup data for the 'me'
keyword have been converted) remove a comment about using 'me' being a
"computationally expensive" operation.
while I'm here, change two instances of "IP number" to "IP address"
+ implement "limit" rules, which permit to limit the number of sessions
between certain host pairs (according to masks). These are a special
type of stateful rules, which might be of interest in some cases.
See the ipfw manpage for details.
+ merge the list pointers and ipfw rule descriptors in the kernel, so
the code is smaller, faster and more readable. This patch basically
consists in replacing "foo->rule->bar" with "rule->bar" all over
the place.
I have been willing to do this for ages!
MFC after: 1 week
right; after a single packet was dropped it beeped after every
transmission.
Change its implementation to only output a bell when there is an
increase in the maximum value of the number of packets that were
sent but not yet received. This has the benefit that even for very
long round-trip times, ping -A will do roughly the right thing
after a few inital false-positives.
Reviewed by: ru
and speed. No new functionality added (yet) apart from a bugfix.
MFC will occur in due time and probably in stages.
BUGFIX: fix a problem in old code which prevented reallocation of
the hash table for dynamic rules (there is a PR on this).
OTHER CHANGES: minor changes to the internal struct for static and dynamic rules.
Requires rebuild of ipfw binary.
Add comments to show how data structures are linked together.
(It probably makes no sense to keep the chain pointers separate
from actual rule descriptors. They will be hopefully merged soon.
keep a (sysctl-readable) counter for the number of static rules,
to speed up IP_FW_GET operations
initial support for a "grace time" for expired connections, so we
can set timeouts for closing connections to much shorter times.
merge zero_entry() and resetlog_entry(), they use basically the
same code.
clean up and reduce replication of code for removing rules,
both for readability and code size.
introduce a separate lifetime for dynamic UDP rules.
fix a problem in old code which prevented reallocation of
the hash table for dynamic rules (PR ...)
restructure dynamic rule descriptors
introduce some local variables to avoid multiple dereferencing of
pointer chains (reduces code size and hopefully increases speed).
of dumpmag from an int to a u_long in rev 1.41 -- without this
change, savecore will always fail like this:
#savecore -v /var/crash
dumplo = 874356736 (1707728 * 512)
savecore: magic number mismatch (8fca0101 != 8fca0101)
savecore: no core dump
gzip(1). gdb doesn't understand these, but then again it didn't
understand compressed crashdumps either.
* Change a stray lseek() into a Lseek()
* Remove the extraneous prototype for log() which has apparently never
existed in FreeBSD's sources
Obtained from: NetBSD (partially)
MFC after: 2 weeks
COPTS towards the end of final CFLAGS so that it can be used to
override Makefile and other defaults. Using it in Makefiles risks
having options set using it clobbered when somebody uses it on the
command line.
Approved by: bde
where the headers should live, as the code references both "ip_fil.h" and
"netinet/ip_fil.h" (among others). As a consequence, put both
sys/contrib/ipfilter and sys/contrib/ipfilter/netinet to the include path
so either variant works.
PR: 29384
Pointed out by: Thomas.Quinot@Cuivre.FR.EU.ORG
Allow non-superuser to open, listen to, and send safe commands on the
routing socket. Superuser priviledge is required for all commands
but RTM_GET.
Lose `setuid root' bit of route(8).
Reviewed by: wollman, dd
At the times, restore(8) and rrestore(8) were the different
utilities. rrestore(8) was installed setuid `root', while
restore(8) with usual ownership and privileges. Later on,
on August 28, 1991 (what a coincidence!), rrestore(8) code
was merged with restore(8). The setgid `tty' bit then was
accidentally put.
default if the executable is named (called as) "mount_*", or can be
enabled with the -C option. This allows users to leave their old
fstab entires unchanged (modulo symlink'ing mdmfs to mount(md|mfs))
and have things behave the way they should (by emulating mount_mfs
silliness), while still allowing mdmfs to be used as a generic
make-an-md-and-mount-it type thing.
Right now, the only effects of this option is to set the mount-point
mode to 01777 as if "-p 1777" was given, and to complain about getting
command-line options that mount_mfs didn't take (e.g., -X, -L, et al).
The latter is mostly to try to catch operator errors.
Also implement -U, which turns on soft-updates. It's redundant (since
softdep is the default), but implement it anyway for compatibility.
