Commit Graph

222 Commits

Author SHA1 Message Date
Marius Strobl
f7b9ae0882 Remove second consts in r233288 in order to appease C++ compilers.
While at it, remove some style(9) bugs in libkern.h.

Submitted by:	kan
2012-03-26 18:22:04 +00:00
Marius Strobl
cc0c154ffb Declare the CRC lookup-tables const as they hardly should change at
run-time.
2012-03-21 20:55:21 +00:00
Ed Schouten
22fec34a57 Implement extensions on top of standards instead of the other way around.
Now that index() and rindex() have become unused, simply turn them into
wrappers around strchr() and strrchr(), respectively.
2012-01-03 07:05:30 +00:00
Ed Schouten
dc15eac046 Use strchr() and strrchr().
It seems strchr() and strrchr() are used more often than index() and
rindex(). Therefore, simply migrate all kernel code to use it.

For the XFS code, remove an empty line to make the code identical to
the code in the Linux kernel.
2012-01-02 12:12:10 +00:00
Ed Schouten
41adcfa1d0 Remove the now unused skpc() function.
It was only used by ufs and ext2 and I have really strong doubts that
there are other pieces of code that also use this function. If it turns
out that external drivers use this code as well, I'd be happy to migrate
or revert.

Bump __FreeBSD_version while there.
2012-01-01 20:54:44 +00:00
Ed Schouten
de85bfc508 Introducing memcchr(3).
It seems two of the file system drivers we have in the tree, namely ufs
and ext3, use a function called `skpc()'. The meaning of this function
does not seem to be documented in FreeBSD, but it turns out one needs to
be a VAX programmer to understand what it does.

SPKC is an instruction on the VAX that does the opposite of memchr(). It
searches for the non-equal character. Add a new function called
memcchr() to the tree that has the following advantages over skpc():

- It has a name that makes more sense than skpc(). Just like strcspn()
  matches the complement of strspn(), memcchr() is the complement of
  memchr().

- It is faster than skpc(). Similar to our strlen() in libc, it compares
  entire words, instead of single bytes. It seems that for this routine
  this yields a sixfold performance increase on amd64.

- It has a man page.
2012-01-01 20:26:11 +00:00
Andriy Gapon
6aa40c0146 retire libkern gets
Inspired by:	bde
MFC after:	2 months
X-MFC-Note:	if deemed a part of KPI, just call cngets internally
2011-12-17 15:48:55 +00:00
Kevin Lo
41f1dccceb Add unicode support to msdosfs and smbfs; original pathes from imura,
bug fixes by Kuan-Chung Chiu <buganini at gmail dot com>.

Tested by me in production for several days at work.
2011-11-18 03:05:20 +00:00
Ed Schouten
d745c852be Mark MALLOC_DEFINEs static that have no corresponding MALLOC_DECLAREs.
This means that their use is restricted to a single C file.
2011-11-07 06:44:47 +00:00
Jung-uk Kim
f359758c4e Add strnlen() to libkern. 2011-10-04 23:53:47 +00:00
Rebecca Cran
974206cf70 Fix typos - remove duplicate "is".
PR:		docs/154934
Submitted by:	Eitan Adler <lists at eitanadler.com>
MFC after:	3 days
2011-02-23 09:22:33 +00:00
Ed Schouten
eb4c31fd41 Add support for asterisk characters when filling in the GELI password
during boot.

Change the last argument of gets() to indicate a visibility flag and add
definitions for the numerical constants. Except for the value 2, gets()
will behave exactly the same, so existing consumers shouldn't break. We
only use it in two places, though.

Submitted by:	lme (older version)
2010-11-14 14:12:43 +00:00
Attilio Rao
109c1de8ba Make the RPC specific __rpc_inet_ntop() and __rpc_inet_pton() general
in the kernel (just as inet_ntoa() and inet_aton()) are and sync their
prototype accordingly with already mentioned functions.

Sponsored by:	Sandvine Incorporated
Reviewed by:	emaste, rstone
Approved by:	dfr
MFC after:	2 weeks
2010-09-24 15:01:45 +00:00
Rafal Jaworowski
1b1270176e Provide memchr() in the libkern.
This is required by libfdt and will be compiled in conditionally only for
FDT-enabled platforms.

Reviewed by:	imp
Sponsored by:	The FreeBSD Foundation
2010-06-02 17:27:23 +00:00
Joel Dahl
d122d78412 Switch to our preferred 2-clause BSD license.
Approved by:	bp
2010-04-07 16:50:38 +00:00
Joel Dahl
c0587701ad Start copyright notice with /*- 2010-04-07 16:29:10 +00:00
Attilio Rao
758801232c Move inet_aton() (specular to inet_ntoa(), already present in libkern)
into libkern in order to made it usable by other modules than alias_proxy.

Obtained from:	Sandvine Incorporated
Sponsored by:	Sandvine Incorporated
MFC:		1 week
2009-11-12 00:46:28 +00:00
Xin LI
0622974ab2 done method is supposed to return int. 2009-06-22 22:09:18 +00:00
Xin LI
6ac937c89c Split tolower/toupper code from usual xlat16 kiconv table, and make it
possible to do tolower/toupper independently without code conversion.

Submitted by:	imura (but bugs are mine)
Obtained from:	http://people.freebsd.org/~imura/kiconv/
		(1_kiconv_wctype_kern.diff, 1_kiconv_wctype_user.diff)
2009-06-22 17:09:46 +00:00
Kip Macy
ea2ecf4f10 add explanatory header license 2009-06-09 21:29:16 +00:00
Kip Macy
ee117d034c move jenkins hash to its own header in libkern 2009-06-09 20:21:40 +00:00
Ed Schouten
802cb57e34 Add memmove() to the kernel, making the kernel compile with Clang.
When copying big structures, LLVM generates calls to memmove(), because
it may not be able to figure out whether structures overlap. This caused
linker errors to occur. memmove() is now implemented using bcopy().
Ideally it would be the other way around, but that can be solved in the
future. On ARM we don't do add anything, because it already has
memmove().

Discussed on:	arch@
Reviewed by:	rdivacky
2009-02-28 16:21:25 +00:00
Ed Schouten
64b0a21bf8 Remove redundant assignment of `s'.
The variable is already initialized to `nptr'.

Found by:	LLVM's scan-build
2009-02-26 12:06:46 +00:00
Randall Stewart
eef9e53e55 This commit fixes the issue with alias_sctp.c. No
longer do we require SCTP to be in the kernel for the
lib to be able to handle SCTP. We do this by moving
the CRC32c checksum into libkern/crc32.c and then adjusting
all routines to use the common methods. Note that this
will improve the performance of iSCSI since they were
using the old single 256 bit table lookup versus the
slicing 8 algorithm (which gives a 4x speed up in
CRC32c calculation :-D)

Reviewed by:rwatson, gnn, scottl, paolo
MFC after:	4 week? (assuming we MFC the alias_sctp changes)
2009-02-14 11:34:57 +00:00
John Baldwin
ee03ef72e3 Add simple locking for the in-kernel iconv code. Translation operations
do not need any locking.  Opening and closing translators is serialized
using an sx lock.

Note: This depends on the earlier fix to kern_module.c to properly order
MOD_UNLOAD events.

MFC after:	2 months
2008-12-05 21:19:24 +00:00
Andrew Thompson
6ff5e8a6e2 Prefix the static shl function with '__' like its parent function __qdivrem to
avoid being picked up by the DTrace fbt provider.

This is called by __udivdi3() for doing 64bit division on a 32bit arch and may
be called from within the dtrace context causing a double fault.
2008-10-09 20:43:42 +00:00
David E. O'Brien
ae72afe0f2 The kernel implemented 'memcmp' is an alias for 'bcmp'. However, memcmp
and bcmp are not the same thing.  'man bcmp' states that the return is
"non-zero" if the two byte strings are not identical.  Where as,
'man memcmp' states that the return is the "difference between the
first two differing bytes (treated as unsigned char values" if the
two byte strings are not identical.

So provide a proper memcmp(9), but it is a C implementation not a tuned
assembly implementation.  Therefore bcmp(9) should be preferred over memcmp(9).
2008-09-23 14:45:10 +00:00
Kip Macy
bbbc5bc1ee Add strcspn to libkern for use by xenbus routines. Will add to build
in separate commit.
2008-08-15 04:07:22 +00:00
Andrey A. Chernov
b834665cd5 Return arc4_i = arc4_j = 0; line from previous backing out since
just found it in OpenBSD, see their sys/crypto/arc4.c, function
rc4_keysetup, line ctx->x = ctx->y = 0;

Obtained from:  OpenBSD
2008-07-26 16:42:45 +00:00
Andrey A. Chernov
fff6495ea6 Per rwatson's request:
"If you don't get a review within a day or two, I would firmly recommend
backing out the changes"

back out all my changes as unreviewed by secteam@ yet.
2008-07-25 15:53:32 +00:00
Andrey A. Chernov
d16863efa6 1) Initialize arc4_i and arc4_j to 0 after key mixing as recommended in
draft-kaukonen-cipher-arcfour-03.txt (3.1.5)

2) Drop first 768 bytes as standard RC4-drop(768)
2008-07-22 16:16:51 +00:00
David E. O'Brien
1989184838 Match the implementation of the inline function from libkern.h. 2008-07-14 21:36:02 +00:00
Marcel Moolenaar
c2602b5b06 Add prototype for __cmpd2(). 2008-02-23 22:40:05 +00:00
Marcel Moolenaar
f7355c360b Bring back (without advertising clause) cmpdi2.c. It's needed on PowerPC
when the FP emulator is compiled-in.
2008-02-23 20:10:49 +00:00
Olivier Houchard
def35d2ca7 Do not use __XSCALE__ to detect if clz is available, use _ARM_ARCH_5 instead.
MFC After:	3 days
2007-10-13 12:05:36 +00:00
Bruce Evans
7df7fc34a3 Unbreak high resolution profiling a little: use dummy asms to prevent
timing loops being optimized away.

Once apon a time, gcc promised not to optimize away timing loops, but
gcc started optimizing away the call to a null function in the timing
loop here some time between gcc-3.3.3 and gcc-3.4.6, and it started
optimizing away the timing loop itself some time between gcc-3.4.6
and gcc-4.2.
2007-06-13 06:17:48 +00:00
Wojciech A. Koszek
f7caeade24 strchr() and strrchr() are already present in the kernel, but with less
popular names. Hence:

- comment current index() and rindex() functions, as these serve the same
  functionality as, respectively, strchr() and strrchr() from userland;
- add inlined version of strchr() and strrchr(), as we tend to use them more
  often;
- remove str[r]chr() definitions from ZFS code;

Reviewed by:	pjd
Approved by:	cognet (mentor)
2007-04-10 21:42:12 +00:00
Alexander Kabaev
c8c0ba192e Add local ptototype for memset function. 2007-04-06 00:06:26 +00:00
Alexander Kabaev
616db5f04c Add trivial MI memset function implementation. GCC mandates the
existence of this function as a linkable symbol in standalone
configurations and existing inline memcpy from libkern.h fails
this requirement.
2007-04-05 22:02:39 +00:00
Pawel Jakub Dawidek
73c0c41140 Add strstr() function to the libkern. 2006-08-12 15:28:39 +00:00
John Baldwin
67ab9fd759 First pass at removing Alpha kernel support. 2006-05-11 22:25:28 +00:00
Robert Watson
b059cbd3eb Convert function declarations to ANSI C.
MFC after:	1 week
2006-01-22 00:46:40 +00:00
Ruslan Ermilov
90ee1f3a04 Ignore spurious '\0' first character read on a serial console.
This allows me to "boot -a" over a serial console.  Tested on
several machines.
2006-01-14 20:45:02 +00:00
Robert Watson
5bb84bc84b Normalize a significant number of kernel malloc type names:
- Prefer '_' to ' ', as it results in more easily parsed results in
  memory monitoring tools such as vmstat.

- Remove punctuation that is incompatible with using memory type names
  as file names, such as '/' characters.

- Disambiguate some collisions by adding subsystem prefixes to some
  memory types.

- Generally prefer lower case to upper case.

- If the same type is defined in multiple architecture directories,
  attempt to use the same name in additional cases.

Not all instances were caught in this change, so more work is required to
finish this conversion.  Similar changes are required for UMA zone names.
2005-10-31 15:41:29 +00:00
Pawel Jakub Dawidek
24f8c87b41 Backout strtok() addition to libkern, strsep() is enough and strtok()
is not safe.

Discussed with:	stefanf, njl
2005-10-06 19:06:07 +00:00
Pawel Jakub Dawidek
5e66cbaeaf Add strtok() and strtok_r() function to libkern.
MFC after:	2 weeks
2005-10-06 11:10:09 +00:00
R. Imura
f373a82454 - Fix checking range of strings of struct iconv_add_in in libsmb and libkiconv,
- Add checking range of strings to iconv_sysctl_add().

Submitted by:	Rudolf Cejka
2005-08-24 12:38:26 +00:00
Pawel Jakub Dawidek
57169160b0 Ha! This is a very interesting bug.
I copied strcasecmp() from userland to the kernel and it didn't worked!
I started to debug the problem and I find out that this line:

	while (tolower(*us1) == tolower(*us2++)) {

was adding _3_ bytes to 'us2' pointer. Am I loosing my minds here?!...
No, in-kernel tolower() is a macro which uses its argument three times.
Bad tolower(9), no cookie.
2005-08-08 19:38:00 +00:00
Pawel Jakub Dawidek
c812ca43bd Add strcasecmp() and strncasecmp() to libkern and connect to the build. 2005-08-08 18:31:13 +00:00
R. Imura
8fa523fb95 Temporary restore a part of rev 1.6.
We must not increase a capability of buffer size here,
because codes which call these functions expect that dst and src
are the same size.
This will cause problem when someone convert a character whose
length is different between charsets on smbfs which was changed
to use xlat16 converter.
2005-07-23 16:52:57 +00:00