Commit Graph

172 Commits

Author SHA1 Message Date
R. Imura
bf8ba9ab3a Fix kiconv on the 64bit plathomes.
- Correct idxp pointer to point the properly address of the
  each array of the kiconv character conversion tables,
  so that character conversion work properly when file
  systems are mounted with kiconv options.

- The definition of ICONV_CSMAXDATALEN was also bogus
  because it was defined as if all machines were 32bit
  computers.

Tested on:	amd64
MFC after:	1 month
2005-05-24 15:38:08 +00:00
Marcel Moolenaar
61d596a8ff Update comment to direct the reader to libkern.h instead of systm.h.
The functions were moved.

Pointed out by: johan@
2005-04-28 05:50:18 +00:00
Marcel Moolenaar
ee6bcf1223 Refactor the CRC-32 code to enhance its usability. Move the actual
CRC logic to a new function: crc32_raw() that obtains the initial
CRC value as well as leaves any post-processing to the caller. As
such, it can be used when the initial CRC value is not ~0U or when
the final CRC value does need to be inverted (bitwise). It also
means that crc32_raw() can be called repeatedly when the data is
not available as a single block, such as for scatter/gather lists
and the likes.

Avoid the additional call overhead incured by the refactoring by
moving the implementation off crc32() to sys/systm.h and making it
inlinable. Since crc32_raw() is itself trivial and since it may
be used in loops that iterate over fragments, having it available
for inlining can be beneficial. Hence, move its implementation
to sys/systm.h as well.

Keep the original implementation of crc32() in libkern/crc32.c for
documentation purposes (as a comment of course).

Triggered by: Jose M Rodriguez (josemi at freebsd dot jazztel dot es)
Discussed on: current@
Tested on: amd64, ia64 (BVO having GPT partitions)
Jargon file candidate: BVO = By Virtue Of :-)
2005-04-27 22:26:45 +00:00
David Schultz
f0ceb98f93 Replace the current strspn() and strcspn() with significantly faster
implementations inspired by the ones in DragonFly.  Unlike the
DragonFly versions, these have a small data cache footprint, and my
tests show that they're never slower than the old code except when the
charset or the span is 0 or 1 characters.  This implementation is
generally faster than DragonFly until either the charset or the span
gets in the ballpark of 32 to 64 characters.
2005-04-02 18:52:44 +00:00
Gleb Smirnoff
75737f3423 Add strspn() to libkern.
Ok'ed by:	rwatson
2005-02-10 20:39:39 +00:00
Ruslan Ermilov
27667f5821 MFlibc: Remove extra closing parenthesis. 2005-02-03 15:51:39 +00:00
Pawel Jakub Dawidek
f3830f0482 We do want to print '\n'/'\r'.
Pointed out by:	stefanf
2005-02-03 15:47:30 +00:00
Pawel Jakub Dawidek
6513f57682 'c' cannot be -1.
Submitted by:	stefanf
2005-02-03 15:23:27 +00:00
Pawel Jakub Dawidek
f627315f1e - Move gets() function to libkern (I want to use it outside vfs_mount.c).
- Add buffer size limitations (overflow will not be possible anymore).
- Add 'visible' option, which will allow for passphrase reading in the
  future.
- Remove special treatment of '@' and '#', those two are only confusing.

Discussed with:	rwatson
MFC after:	2 weeks
2005-02-03 15:10:58 +00:00
Robert Watson
dc66c5fe6f Because the argument to strvalid() is a size_t, use a size_t to iterate
over the array.

Submitted by:	stefanf
2005-01-29 13:34:22 +00:00
Robert Watson
debb2f87b6 Per permission from McAfee, remove clause 3 of the BSD license on
strvalid.c.
2005-01-29 13:04:04 +00:00
Warner Losh
d6ea02625f /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-07 00:24:33 +00:00
Olivier Houchard
2fd21813b0 Use the RET macro. 2004-11-09 16:47:47 +00:00
Olivier Houchard
ec98ae75da Implement ffs with clz for Xscale.
Idea taken from:	NetBSD
2004-11-07 16:53:29 +00:00
Olivier Houchard
fbaa643e9a Don't attempt to profile __udivsi3() and friends, as mcount() uses them. 2004-10-01 16:44:08 +00:00
Marcel Moolenaar
0f2fe153bc Move the kernel-specific logic to adjust frompc from MI to MD. For
these two reasons:
1. On ia64 a function pointer does not hold the address of the first
   instruction of a functions implementation. It holds the address
   of a function descriptor. Hence the user(), btrap(), eintr() and
   bintr() prototypes are wrong for getting the actual code address.
2. The logic forces interrupt, trap and exception entry points to
   be layed-out contiguously. This can not be achieved on ia64 and is
   generally just bad programming.

The MCOUNT_FROMPC_USER macro is used to set the frompc argument to
some kernel address which represents any frompc that falls outside
the kernel text range. The macro can expand to ~0U to bail out in
that case.
The MCOUNT_FROMPC_INTR macro is used to set the frompc argument to
some kernel address to represent a call to a trap or interrupt
handler. This to avoid that the trap or interrupt handler appear to
be called from everywhere in the call graph. The macro can expand
to ~0U to prevent adjusting frompc. Note that the argument is selfpc,
not frompc.

This commit defines the macros on all architectures equivalently to
the original code in sys/libkern/mcount.c. People can take it from
here...

Compile-tested on: alpha, amd64, i386, ia64 and sparc64
Boot-tested on: i386
2004-08-27 19:42:35 +00:00
Poul-Henning Kamp
3dfe213e61 Convert the vfsconf list to a TAILQ.
Introduce vfs_byname() function to find things on it.

Staticize vfs_nmount() function under the name vfs_donmount().

Various cleanups.
2004-07-27 22:32:01 +00:00
Gleb Smirnoff
b1e34c44ef Copy qsort_r(3) from libc to libkern.
Reviewed by:	phk
Approved by:	julian (mentor)
2004-07-15 23:58:23 +00:00
Olivier Houchard
03f110294b Import libkern arm specific bits. 2004-05-14 12:28:31 +00:00
Bruce Evans
c7e459ed6c Fixed some style bugs (unsorting of prototypes in previous commit, and
messes involving the idempotency guard).
2004-05-05 15:12:55 +00:00
Olivier Houchard
967f542177 Prototype __ashldi3(), __ashrdi3() and __lshrdi3(). 2004-05-04 22:15:54 +00:00
Warner Losh
f36cfd49ad Remove advertising clause from University of California Regent's
license, per letter dated July 22, 1999 and email from Peter Wemm,
Alan Cox and Robert Watson.

Approved by: core, peter, alc, rwatson
2004-04-07 20:46:16 +00:00
Robert Drehmel
9fbb80baff Bring these files closer to style(9) conformance by comparing a
dereferenced character pointer to '\0' instead of using the ! operator.
2004-03-29 21:15:41 +00:00
Tom Rhodes
a122cca953 These are changes to allow to use the Intel C/C++ compiler (lang/icc)
to build the kernel. It doesn't affect the operation if gcc.

Most of the changes are just adding __INTEL_COMPILER to #ifdef's, as
icc v8 may define __GNUC__ some parts may look strange but are
necessary.

Additional changes:
 - in_cksum.[ch]:
   * use a generic C version instead of the assembly version in the !gcc
     case (ASM code breaks with the optimizations icc does)
     -> no bad checksums with an icc compiled kernel
     Help from:		andre, grehan, das
     Stolen from: 	alpha version via ppc version
     The entire checksum code should IMHO be replaced with the DragonFly
     version (because it isn't guaranteed future revisions of gcc will
     include similar optimizations) as in:
        ---snip---
          Revision  Changes    Path
          1.12      +1 -0      src/sys/conf/files.i386
          1.4       +142 -558  src/sys/i386/i386/in_cksum.c
          1.5       +33 -69    src/sys/i386/include/in_cksum.h
          1.5       +2 -0      src/sys/netinet/igmp.c
          1.6       +0 -1      src/sys/netinet/in.h
          1.6       +2 -0      src/sys/netinet/ip_icmp.c

          1.4       +3 -4      src/contrib/ipfilter/ip_compat.h
          1.3       +1 -2      src/sbin/natd/icmp.c
          1.4       +0 -1      src/sbin/natd/natd.c
          1.48      +1 -0      src/sys/conf/files
          1.2       +0 -1      src/sys/conf/files.amd64
          1.13      +0 -1      src/sys/conf/files.i386
          1.5       +0 -1      src/sys/conf/files.pc98
          1.7       +1 -1      src/sys/contrib/ipfilter/netinet/fil.c
          1.10      +2 -3      src/sys/contrib/ipfilter/netinet/ip_compat.h
          1.10      +1 -1      src/sys/contrib/ipfilter/netinet/ip_fil.c
          1.7       +1 -1      src/sys/dev/netif/txp/if_txp.c
          1.7       +1 -1      src/sys/net/ip_mroute/ip_mroute.c
          1.7       +1 -2      src/sys/net/ipfw/ip_fw2.c
          1.6       +1 -2      src/sys/netinet/igmp.c
          1.4       +158 -116  src/sys/netinet/in_cksum.c
          1.6       +1 -1      src/sys/netinet/ip_gre.c
          1.7       +1 -2      src/sys/netinet/ip_icmp.c
          1.10      +1 -1      src/sys/netinet/ip_input.c
          1.10      +1 -2      src/sys/netinet/ip_output.c
          1.13      +1 -2      src/sys/netinet/tcp_input.c
          1.9       +1 -2      src/sys/netinet/tcp_output.c
          1.10      +1 -1      src/sys/netinet/tcp_subr.c
          1.10      +1 -1      src/sys/netinet/tcp_syncache.c
          1.9       +1 -2      src/sys/netinet/udp_usrreq.c

          1.5       +1 -2      src/sys/netinet6/ipsec.c
          1.5       +1 -2      src/sys/netproto/ipsec/ipsec.c
          1.5       +1 -1      src/sys/netproto/ipsec/ipsec_input.c
          1.4       +1 -2      src/sys/netproto/ipsec/ipsec_output.c

          and finally remove
            sys/i386/i386        in_cksum.c
            sys/i386/include     in_cksum.h
        ---snip---
 - endian.h:
   * DTRT in C++ mode
 - quad.h:
   * we don't use gcc v1 anymore, remove support for it
   Suggested by:	bde (long ago)
 - assym.h:
   * avoid zero-length arrays (remove dependency on a gcc specific
     feature)
     This change changes the contents of the object file, but as it's
     only used to generate some values for a header, and the generator
     knows how to handle this, there's no impact in the gcc case.
   Explained by:	bde
   Submitted by:	Marius Strobl <marius@alchemy.franken.de>
 - aicasm.c:
   * minor change to teach it about the way icc spells "-nostdinc"
   Not approved by:	gibbs (no reply to my mail)
 - bump __FreeBSD_version (lang/icc needs to know about the changes)

Incarnations of this patch survive gcc compiles since a loooong time,
I use it on my desktop. An icc compiled kernel works since Nov. 2003
(exceptions: snd_* if used as modules), it survives a build of the
entire ports collection with icc.

Parts of this commit contains suggestions or submissions from
Marius Strobl <marius@alchemy.franken.de>.

Reviewed by:	-arch
Submitted by:	netchild
2004-03-12 21:45:33 +00:00
Peter Grehan
9a580b5e18 Remove register keyword and constify tmp values. This fixes
PPC compile warning - PPC is the only consumer of this code
path.
2004-02-12 03:23:13 +00:00
Dag-Erling Smørgrav
29554ea51a Translate from GNU C to ISO C. 2004-01-14 07:47:10 +00:00
Dag-Erling Smørgrav
8746a69a28 Cast to unsigned to avoid sign-extension problems. 2004-01-13 16:02:20 +00:00
Dag-Erling Smørgrav
f04ecda547 Add C implementations of ffsl(), fls() and flsl(). 2004-01-13 15:36:34 +00:00
Dag-Erling Smørgrav
53546cd058 ANSIfy, de-register, replace VAX reference with actual description. 2004-01-13 15:35:22 +00:00
Max Khon
0f4e4130e1 Make msdosfs long filenames matching case insensitive again.
PR:		59765
Submitted by:	Ryuichiro Imura <imura@ryu16.org>
2003-12-08 08:32:20 +00:00
Max Khon
c4f02a891f - Support for multibyte charsets in LIBICONV.
- CD9660_ICONV, NTFS_ICONV and MSDOSFS_ICONV kernel options
(with corresponding modules).
- kiconv(3) for loadable charset conversion tables support.

Submitted by:	Ryuichiro Imura <imura@ryu16.org>
2003-09-26 20:26:25 +00:00
Mike Silbersack
2f823fa326 Lock down arc4random so it can be safely called w/o Giant.
Minor code reorganization was required, but the only functional
change was that the first 1024 bytes of output are thrown out
after each reseed, rather than just the initial seed.
2003-08-15 06:34:47 +00:00
Andrey A. Chernov
696fe9ddcd Lower initial drop value to 50, it is enough to hide linearity 2003-08-10 17:56:58 +00:00
Bruce Evans
4066649d5a Backed out the micro-optimization in 1.4. It was to help gcc-2.6.3
on i486's (and probably i386's), but it has had very little effect
since gcc-2.7 or gcc-2.95.  With gcc-3.3, it gave a small
pessimization for at least i386's, athlon-xp's and pentium4's, a
small optimization (I think) for pentium1's, and made no difference
for i386's.  (movzbl is best for all the later processors, and the
micro-optimization was to stop it being used on i486's.)
2003-07-25 15:54:23 +00:00
David E. O'Brien
ab0de15baf Use __FBSDID(). 2003-06-11 05:37:42 +00:00
Alexander Kabaev
104a9b7e3e Deprecate machine/limits.h in favor of new sys/limits.h.
Change all in-tree consumers to include <sys/limits.h>

Discussed on:	standards@
Partially submitted by: Craig Rodrigues <rodrigc@attbi.com>
2003-04-29 13:36:06 +00:00
Robert Watson
05c06d15e8 Further GC of M_STRING, missed previously. 2003-02-26 01:00:29 +00:00
Robert Watson
ae4f61f0d7 Replace license with two-clause BSD; an old license template with three
clauses was used by mistake.
2003-02-26 00:59:53 +00:00
Robert Watson
354d43abf3 Pass a malloc type into the libkern strdup() implementation explicitly,
so that callers can specify what malloc pool the resulting memory
should come from.

Requested by:	phk
2003-02-25 22:11:39 +00:00
Robert Watson
96c4266cb3 Add an implementation of strdup() to libkern. Allocated memory is of
type M_STRING, now defined in malloc.h.  Useful when string parsing
must occur using the kernel strsep() and we want to avoid toasting
the source string.

Obtained from:	TrustedBSD Project
Sponsored by:	DARPA, Network Associates Laboratories
2003-02-23 14:30:17 +00:00
Warner Losh
a163d034fa Back out M_* changes, per decision of the TRB.
Approved by: trb
2003-02-19 05:47:46 +00:00
Jens Schweikhardt
00ad14c702 Improve a comment and undo a bogus s/a/an/ in a comment. An asm guru
should add more comments explaining which registers hold which variables.

Spotted by:	bde
2003-02-11 20:15:11 +00:00
Jeffrey Hsu
93eb73aa48 Add restrict keyword to string functions.
Reviewed by:	bde
2003-02-10 00:36:27 +00:00
Andrey A. Chernov
dba8967550 Since we drop NSHUFF values now, set default seed to what it becomes
after srandom(1)
2003-02-05 21:28:52 +00:00
Andrey A. Chernov
a36d6a59f0 Drop NSHUFF values right after srandom() to remove part of seed -> 1st
value correlation. Correlation still remains because of algorithm limits.
2003-02-04 11:33:09 +00:00
Andrey A. Chernov
b413a2949e Park & Miller PRNG can be safely initialized with any value but 0 and stuck
at 0 as designed. Its BSD adaptation tries to fight it by mapping 0 to
2147483647 after calculation, but this method not works since 2147483647
seed returns to 0 again on the next interation. Instead of after calculation
mapping, map 0 to another value _before_ calculation, so it never stucks.
2003-02-03 10:29:47 +00:00
Alfred Perlstein
44956c9863 Remove M_TRYWAIT/M_WAITOK/M_WAIT. Callers should use 0.
Merge M_NOWAIT/M_DONTWAIT into a single flag M_NOWAIT.
2003-01-21 08:56:16 +00:00
Jens Schweikhardt
9d5abbddbf Correct typos, mostly s/ a / an / where appropriate. Some whitespace cleanup,
especially in troff files.
2003-01-01 18:49:04 +00:00
Alfred Perlstein
29f194457c Fix instances of macros with improperly parenthasized arguments.
Verified by: md5
2002-11-09 12:55:07 +00:00
Poul-Henning Kamp
2c38619b52 Slight overhaul of arc4random() and friends.
One bug fixed:  Use getmicrouptime() to trigger reseeds so that we
cannot be tricked by a clock being stepped backwards.

Express parameters in natural units and with natural names.

Don't use struct timeval more than we need to.

Various stylistic and readability polishing.

Introduce arc4rand(void *ptr, u_int len, int reseed) function which
returns a stream of pseudo-random bytes, observing the automatic
reseed criteria as well as allowing forced reseeds.

Rewrite arc4random() in terms of arc4rand().

Sponsored by:   DARPA & NAI Labs.
2002-10-11 13:13:08 +00:00