The background info in this man page needs rewriting
in some parts since the last major changes
to the code, however it still accuratly reflects how to use the
API.
* use correct error detection of realloc failure
* strtol negative return check
* use strtol to validate string instead of rolling our own
validation code
* terminate the command sequence correctly
seed->first value correlation. It breaks rand_r()... Other possible methods
like shuffling inside aray will breaks rand_r() too, because it assumes
only one word state, i.e. nothing extra can be added after seed assignment
in srand().
BTW, for old formulae seed->first value correlation is not so monotonically
increased as with other Linear Congruential Generators of this type only
becase arithmetic overflow happens. But overflow affects distribution
and lower bits very badly, as many articles says, such type of overflow
not improves PRNG.
So, monotonically increased seed->first value correlation problem remains...
Only warnings that could be fixed without changing the generated object
code and without restructuring the source code have been handled.
Reviewed by: /sbin/md5
Introdice RTLD_SELF special handle and properly process it within
dlsym() and dlinfo() functions.
The intention is to improve our compatibility with Solaris and
to make a Java port easier.
Partially submitted by: phantom
isnormal(). The current isinf() and isnan() are perserved for
binary compatibility with 5.0, but new programs will use the macros.
o Implement C99 comparison macros isgreater(), isgreaterequal(),
isless(), islessequal(), islessgreater(), isunordered().
Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
o Add a MD header private to libc called _fpmath.h; this header
contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
<math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
<machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
on the size of its argument. __fpclassifyl() is never called on
alpha because (sizeof(long double) == sizeof(double)), which is good
since __fpclassifyl() can't deal with such a small `long double'.
This was developed by David Schultz and myself with input from bde and
fenner.
PR: 23103
Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
(significant portions)
Reviewed by: bde, fenner (earlier versions)
to remove part of seed -> 1st value correlation. Correlation still remains
because of algorithm limits. Note that old algorithm have even stronger
correlation, especially in the lower bits area, but not eye-visible, as
current one.
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.
checks, including the "open directory" check or a MAC check fail,
after the working directory of the process has been changed, then
the cwd of the process will be left as the target directory rather
than the original directory.
At some point, this bug might be fixable by performing the directory
change only after permission is granted for the change. In the
mean time document it (it's been there for a while).
is finished. This fixes clients doing two RPCs over the
same connection at the same time. Without this fix, we
could end with a reply to old data.
Submitted by: Frank van der Linden <fvdl@netbsd.org>
Reviewed by: rwatson
Obtained from: NetBSD
a NULL filename argument allows a stream's mode to be changed. At the
moment it just recycles the old file descriptor instead of storing the
filename somewhere and using that to reopen the file, as the standard
seems to require. Strictly conforming C99 applications probably can't
tell the difference but POSIX ones can.
PR: 46791
to be called on first sight of trouble.
"sensitive" is somewhat arbitrarily defined as "setuid, setgid, uid == root
or gid == wheel".
The 'A' option carries no performance penalty.
It is not possible to override this setting: fix the program instead.
Absentmindedly nodded OK to by: various
o Link mac_get_pid.3 to mac_get.3
o Update SEE ALSO to refer to mac_prepare, and added missing references
o Remove clause #3 on my work
o Update mac_get.3 for the updated MAC API
Sponsored by: DARPA, Network Associates Laboratories
Obtained from: TrustedBSD Project
so that multiple opens of the same semaphore without an intervening
sem_close() return the same object, and so that sem_close() does not
segfault while trying to remove the item from the list.
putchar_unlocked(), putc_unlocked(), feof_unlocked(), ferror_unlocked(),
clearerr_unlocked(), and fileno_unlocked(). The first four are required
by POSIX. The rest are provided for consistency.
instead of unwinding the call stack. This makes them usable to switch
stacks, e.g. for libc_r.
Do not save the frame pointer in setjmp() and _setjmp(), it is not needed
any more.
Rename _longjmp() to ___longjmp(), with a weak alias to _longjmp(), like
the other architectures did.
o Call waitpid() if an error occurs after forking the child process
to avoid leaving zombies around.
o Handle the WRDE_DOOFS|WRDE_APPEND combination correctly
o Do not confuse $( substitution with $(( shell arithmetic
(noticed by wollman)
o Handle backslash escaping properly
o Allow $( and ${ to be quoted
As a side effect, it makes the code easier to read and requires less
pointer arithmetic.
Test by: strerror regression test
Submitted by: Tim Kientzle <kientzle@acm.org>
when the same pipe FILE is pclosed()'d in different threads, and to avoid
corrupting the linked list when adding or removing items. The symptoms of
the linked list getting corrupted were pclose() either not finding the pipe
on the list, or the list becoming circular and pclose() looping infinitely.
to Solaris, it is in /usr/libexec) to perform the handing over of tty nodes
to the user being granted the pty.
Submitted by: Ryan Younce <ryany@pobox.com>
Reviewed by: security-officer@, standards@, mike@
This situation most notably arises in chkprintcap, when a /etc/printcap
entry has an empty rp= attribute. In that case, cgetmatch would enter
an infinite loop if any entry in the file has multiple names.
This causes lpd to hang at boot time on 5.0-DP2 when both conditions
are met (:rp=: and multiple names -- not necessarily on the same entry).
Reviewed by: roberto
a pointer and lack a prototype will have the return value (assumed
to be an integer) zero-extended to a pointer. On ia64 this is
unconditionally fatal as it zeroes-out the region bits, forming an
invalid pointer. Fix the sigsegv by including <stdlib.h>.
Pointy hat: bbraun
the -fpcc-struct-return calling convention properly instead of
returning garbage. This may break backwards compatibility with some old
binaries that were compiled when -fno-pcc-struct-return was the default.
o Fix an English error (comma splice) and poorly worded sentence.
o Fix KNF ordering of variables (pointers come before arithmetic types).
o Restore hand-optimization of sizeof()-1, instead of strlen().
o Remove unneeded local variables in strerror_r().
Test by: strerror regression test
Requested by: bde
Reviewed by: bde
strerror_r(). Doing this allows us to ensure that strerror_r() always
fills the supplied buffer regardless of EINVAL or ERANGE errors.
strerror()'s semantics have changed slightly such that an argument of
0 is now considered invalid and errno is set to EINVAL.
Remove internal regression test for strerror() and strerror_r(). This
will be reincarnated in src/tools/regression/lib/libc/string.
In strerror(3), add a comment about strerror()'s bogus return type.
PR: 44356
Stop calling system calls "function calls".
Use "The .Fn system call" a-la "The .Nm utility".
When referring to a non-BSD implementation in
the HISTORY section, call syscall a function,
to be safe.
from "unix" back to "local". Add some compat stuff so both
ways work for some time.
Reviewed by: phk
Approved by: imp (UPDATING)
Requested by: iedowse, lukem@netbsd.org
when trying to store the year in a signed int. The maximum time_t on ia64
is around 292 billion years in the future, but 'int' and struct tm.tm_year
can only represent then ext 2.1 billion years or so.
This solves the problem of mktime/localtime looping on ia64. Unfortunately,
the standards say that tm_year is an 'int', so we are still stuck with a
y2147483647 bug. bash2's configure script looks for bugs in mktime() and
fails on ia64 because of this. However, mktime() on FreeBSD fails the test
normally anyway so this is no big loss.
This change does not affect any other platforms besides ia64.
Approved by: re
been repo-copied from src/lib/libc/uuid to src/include. Update the
makefiles.
While in src/include/Makefile, reformat and resort INCS. Reverting
the functional change only involves removing uuid.h.
Pompted by: ru
I've no idea if this is the right behavior for the library, but this
at least fixes the build, and matches what seems to be alfred's intent
in the commit message for 1.19.
sysconf.c:
Use 'break' rather than 'goto yesno' in sysconf.c so that we report a '0'
return value from the kernel sysctl.
vfs_aio.c:
Make aio reset its configuration parameters to -1 after unloading
instead of 0.
posix4_mib.c:
Initialize the aio configuration parameters to -1
to indicate that it is not loaded.
Add a facility (p31b_iscfg()) to determine if a posix4 facility has been
initialized to avoid having to re-order the SYSINITs.
Use p31b_iscfg() to determine if aio has had a chance to run yet which
is likely if it is compiled into the kernel and avoid spamming its
values.
Introduce a macro P31B_VALID() instead of doing the same comparison over
and over.
posix4.h:
Prototype p31b_iscfg().
libc. I want to keep these in some version for the thread
library/ies, but don't know whether to have them repo-copied
to libc_r or renamed and kept in libc.
Change the name of an alpha macro that was changed with the
system call commit.
subsystems capabilities:
_SC_AIO_LISTIO_MAX returns the default of _POSIX_AIO_LISTIO_MAX
_SC_AIO_MAX returns the default _POSIX_AIO_MAX
_SC_AIO_PRIO_DELTA_MAX returns the default of 0
Without these adjustments the values returned are -1 even when the
aio side of the kernel returns '0' for them which is incorrect.
Noticed by: Craig Rodrigues <rodrigc@attbi.com>
architecture, mainly to avoid getting a SIGFPE signal sent
when calling strtod(3) with certain input.
The SIGFPE has been sent because the code was not aware that
a Gradual Underflow is handled in software via traps on the
Alpha architecture, but is not implemented in our Alpha kernel
layer.
With `Sudden_Underflow' defined, strtod(3) should not depend
on Gradual Underflow and adjust its calculations accordingly,
which means that other, more subtle errors than the sending of
SIGFPE could be solved by this.
Discussed with: bde
PR: alpha/12623
PR: alpha/17032
PR: alpha/43567
MFC after: 7 days
caused by dynamic PAM modules that call openlog(3) and closelog(3),
e.g. ports/security/pam_pwdfile.
What happened here is that the module first registered its "ident"
with openlog(3), then PAM library unloaded module with dlclose(3),
and the next call to syslog(3) resulted in SIGSEGV.
MFC after: 3 days
o Remove the unwanted smartness in _longjmp() where it compares
the current ar.bspstore with the saved ar.bspstore and restores
ar.rnat based on it. This either avoids saving ar.rnat in the
jmp_buf or is the consequence of not saving ar.rnat. All this
complexity breaks libc_r where we use longjmp() to switch to
different threads and the current ar.bspstore has no relation
to the saved ar.bspstore. Thus: we save ar.rnat in setjmp()
and simply restore ar.bspstore and ar.rnat in longjmp().
This code needs a cleanup.
entries in the table being stubs. While I'm here, add macros to
auto-generate the stubs. A conforming threads library can override
the stub routines by filling in the jump table.
Add some entries to namespace.h and sync un-namespace.h to it.
Also add a comment to remind folks to update un-namespace.h
when changing namespace.h.
Don't force 16-byte alignment at run-time. Do it at compile-time.
This saves us the pointer fiddling by the setjmp functions and
reduces complexity. While here, increase the jmp_buf by 16 bytes
to an even 512 bytes. Coincidentally, due to the way alignment
was handled prior to this change, the jmp_buf has not changed in
size, but only in how the space is used. Prior to this change
the 16 bytes were reserved for enforcing alignment; now they are
reserved by us for future extensions.
Therefore, this ABI breaker is relatively save: the failure is
always an alignment trap.
namely uuidgen(1), uuidgen(2) and uuid(3), the following division
has been choosen:
uuidgen(1) A description of the command line utility,
and other user oriented UUID information.
uuidgen(2) A mostly technical description of UUIDs.
uuid(3) A description of the functions and other
programmer oriented UUID information.
According to the division: add more technical contents.
Contributed by: Hiten Pandya <hiten@uk.FreeBSD.org>
Edited and enhanced: marcel
to be static for 5.0. I may remove this for 5.1 or 5.2. No more
binaries or libarires will be generated with __sF starting as of
yesterday. Originally the plan had been to eliminate this for 5.0,
but we didn't get the __std{in,out,err}p changes merged into -stable
until yesterday (rather than in September 2001 like it should have
been). Given that didn't happen on time, we can't do the other part
of the scheme now.
# Please do not change this without talking to me first.
the page myself. The new language is more accurate than what was there
before, but the most accurate way of describing the funcionality eludes
me.
PR: kern/33904
MFC after: 1 month
the data value returned by kevent()'s EVFILT_READ filter on non-TCP
sockets accurately reflects the amount of data that can be read from the
sockets by applications.
PR: 30634
Reviewed by: -net, -arch
Sponsored by: NTT Multimedia Communications Labs
MFC after: 2 weeks
* Fix typos in rwlock stubs.
* Add pthread_XXX counterparts to the _pthread_XXX stubs which libraries
like libX11 can use to ensure thread-safety without requiring the use
of a thread library.
Submitted by: Terry Lambert (pthread_cond_broadcast)
Reviewed by: deischen
HUGE_VAL is not properly aligned on some architectures. The previous
fix now works because the two versions of 'math.h' (include/math.h
and lib/msun/src/math.h) have since been merged into one.
PR: bin/43544
functions is expected for uuidgen(1), mca(8) and gpt(8). Given the
generic use of UUIDs beyond the scope of the DCE 1.1 specification,
visibility of the data structure at all levels of the machine,
including firmware and the wish to not create a permanent build-
time FreeBSD-ism for DCE compliant applications by creating a new
library, it was decided that libc would be the least inappropriate
place. Also, because the UUID functions live in libc under IRIX as
well, we have maximized our portability and left as many options
open as possible.
This implementation introduces an extension not found in the
specification: the status parameter is allowed to be a NULL-
pointer. The reason for introducing the extension is because
the status is almost never of any use.
The manpage that's part of this commit is a minimal place-holder
and is further fleshed-out in the near future.
Approved by: re@
Contributed by: Hiten Mahesh Pandya <hiten@unixdaemons.com>
Sponsored by: marcel :-)
Tested on: alpha, i386, ia64
Don't gratuitously pipe thru a cat(1) if NODOCCOMPRESS.
Only create _stamp.extra when necessary.
Get rid of SOELIMPP and OBJS.
Use Groff version of soelim(1); we need its -I option
for the following to work.
Don't needlessly chdir to SRCDIR. Only a few documents
need CD_HACK, and those that need it either use refer(1)
or .PSPIC macro which internally uses the .psbb call.
return -1 regardless of what s points to, mbtowc(&w, s, 1) sets w to a
null wide character when s points to a null byte. This seems to be closer
to what most other implementations do, but the C99 standard contradicts
itself for these cases.
whether a named utility should behave in FreeBSD 4.x-compatible mode
or in a standard mode (default standard). The configuration is done
malloc(3)-style, with either an environment variable or a symlink.
Update expr(1) to use this new interface.
Implement new sysconf keys. Change the implenentation of
_SC_ASYNCHRONOUS_IO in preparation for the next set of changes.
Move some limits which had been in <sys/syslimits.h> to <limits.h> where
they belong. They had only ever been in syslimits.h to provide for the
kernel implementation of the CTL_USER MIB branch, which went away with
newsysctl years ago. (There is a #error in <sys/syslimits.h> which I
will downgrade in the next commit.)
- port range check need to be done before htons. from deraadt
- %d/%u audit
- correct bad practice in the code - it uses two changing variables
to manage buffer (buf and buflen). we eliminate buflen and use
fixed point (ep) as the ending pointer.
- use snprintf, not sprintf
- pass correct name into q.name. from lukem@netbsd
- sync comment
Obtained from: KAME
MFC after: 1 week
linking.
* Fix disorder in the SEE ALSO sections of aio_*(2).
* Remove unnecessary cross-references from the SEE ALSO sections of
aio_*(2); config(8), kldload(8) and kldunload(8) are cross-referenced
from aio(4).
* Remove the KERNEL OPTIONS sections from aio_*(2), now that these
pages cross-reference aio(4), which contains suitable kernel linking
reference material.
more efficient. The problem with the previous implementation was that it
calculated the length of the first argument ("big") with wcslen() when
it was not necessary.
to be passed. Point this out in a warning notice, which will eventually
go away, sometime between now and -RELEASE.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, NAI Labs
two major bugs:
- off-by-one overflow when the length of the source string exceeds or
equals the destination buffer size.
- old version was not padding the destination buffer with null wide chars
This removes a lot of complexity, since we basically just reserve
space on a retrieval of a label, and pass around strings. Two new
elements: (1) consumers of the API must now declare what label
elements they are interested in retrieving, or (2) rely on the default
provided in a new configuration file, mac.conf.
Approved by: re
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
to bring in the new MAC label management API. With the new API
revision, we have only policy-agnostic code in libc and the base
kernel.
Obtained from: TrustedBSD Project
Sponsored by: DARPA, Network Associates Laboratories
maximum number of bytes that may be stored in the array, not the maximum
number of wide characters to read. The wording of the standard unfortunately
does not make this clear.
the compatibility library libcompat.
- Add new implementations of lsearch() and lfind() which conform to
IEEE Std 1003.1-2001 to libc. Add a new manual page for them and
add them to the makefile.
- Add function prototypes for lsearch() and lfind() to the search.h
header.
page from the compatibility library.
- Add new implementations of insque() and remque() which conform to
IEEE Std 1003.1-2001 to libc. Add a new manual page for them and
connect them to the build.
- Add the prototypes of insque() and remque() to the search.h
header.
in the UDP RPC client code. As a side-effect, this fixes some bugs
that might prevent the RPC call from ever timing out for example
if the server keeps responding with the wrong xid. This could
probably be simplified further by using the EVFILT_TIMER filter.
(at least the French ones), a memory leak upon successful termination, a
pointer arithmetic error causing heap corruption, and an off-by-one bug
causing incorrect amounts of padding at the right of the value.
"UTF2" method. Although UTF-8 and the old UTF2 encoding are compatible
for 16-bit characters, the new UTF-8 implementation is much more strict
about rejecting malformed input and also handles the full 31 bit range
of characters.
