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* improve verb-tense for explaining the calling convention of __deraadt2019-07-051-3/+3
| | | | ok guenther jmc
* The last consumer of pre-posix realpath behaviour has stoppedderaadt2019-07-051-34/+3
| | | | | | | | requiring it (sftp-server). Remove the /exists///// behaviour from here. The /nonexistant behaviour remains in the kernel and needs to be shot next. There may be ports fallout, but we doubt it. ok beck djm
* tweak previous; ok guentherjmc2019-06-301-5/+6
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* Document that getcwd() and realpath() are built on system calls thatguenther2019-06-291-2/+16
| | | | | | | have a different calling convention than the standard function...as seen in kdump output. ok deraadt@ schwarze@
* When system calls indicate an error they return -1, not some arbitraryderaadt2019-06-281-2/+2
| | | | | | value < 0. errno is only updated in this case. Change all (most?) callers of syscalls to follow this better, and let's see if this strictness helps us in the future.
* The C89 standard only requires that atexit(3) returns a non-zero valueschwarze2019-06-271-5/+12
| | | | | | on error, so checking for -1 only is potentially non-portable. Also mention that the C89 standard does not require errno to be set. OK deraadt@ millert@
* Remove old realpath(3), and the userland-vs-kernel realpath verificationderaadt2019-06-171-334/+44
| | | | | | | | code. We now user the simple userland wrapper on top of __realpath(2). The non-POSIX behaviour still remains, that is the next component to fix. From a diff by beck, but I managed to chainsaw it a bit further. Tested in snaps for a couple of days. ok beck
* oops - missing .El in previous;jmc2019-06-151-1/+2
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* realpath(3) doesn't use lstat(2), readlink(2), or getcwd(3) anymore,deraadt2019-06-151-21/+39
| | | | | | it is a thin wrapper over the syscall __readlink(2). Improve the list of possible errors. ok millert beck jmc
* Complete the ld.so boot cleanup: move most libc initialization fromguenther2019-06-021-7/+2
| | | | | | | | | | | | | | | | | _csu_finish() to _libc_preinit(), which is an .init_array function in shared libc (and mark it INITFIRST) or a .preinit_array function in static libc, grabbing the _dl_cb callback there from ld.so. Then in _csu_finish(), invoke the dl_clean_boot() callback to free ld.so's startup bits before main() gets control. Other cleanups this permits: - move various startup structures into .data.rel.ro - the dl* stubs in libc can be strong and call the callbacks provided via _dl_cb - no longer need to conditionalize dlctl() calls on presence of _DYNAMIC original concept and full diff ok kettenis@ ok deraadt@
* __realpath(2) appears to have improved, so re-enable the code thatderaadt2019-05-301-3/+136
| | | | | checks userland-parsing vs kernel parsing, we are hoping to spot another bug..
* There are some bugs in __realpath(2) -- it isn't quite ready so disablederaadt2019-05-291-136/+3
| | | | calling it until those are fixed.
* Enable the use of the kernel __realpath() system call in the libc wrapper.beck2019-05-281-3/+136
| | | | | | | | For now, this also still uses the existing realpath implmentation and emits a syslog if we see differening results. Once we have run with that for a little while we will remove the old code ok deraadt@
* Only override size of chunk if we're not given the actual length.otto2019-05-231-2/+3
| | | | Fixes malloc_conceal...freezero with malloc options C and/or G.
* clarify that later flags modify earlier flags;schwarze2019-05-191-2/+4
| | | | | triggered by a question from Jan Stary <hans at stare dot cz> on misc@; OK otto@
* delete two stray blank linesschwarze2019-05-151-4/+2
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* Mention introduction of *_conceal.otto2019-05-131-2/+8
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* Inroduce malloc_conceal() and calloc_conceal(). Similar to theirotto2019-05-102-199/+219
| | | | | counterparts but return memory in pages marked MAP_CONCEAL and on free() freezero() is actually called.
* escape backslashes;schwarze2019-03-201-3/+3
| | | | patch from Peter Piwowarski <peterjpiwowarski at gmail dot com>
* I am retiring my old email address; replace it with my OpenBSD one.millert2019-01-258-20/+20
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* sort sections, and add a missing verb to the EXAMPLES text;jmc2019-01-221-24/+24
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* Wrap long lineotto2019-01-221-4/+4
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* a few tweakstedu2019-01-211-5/+9
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* Add example showing a proper comparison function, as many examples showotto2019-01-211-3/+40
| | | | the wrong idiom. ok tedu@ but probably needs some tweakin
* Replace the vague, incorrect, and confusing BUGS sections with CAVEATSschwarze2019-01-183-12/+33
| | | | | | clearly stating which arguments have to be avoided, and mention the header files defining the constants required for the checks. Feedback and OK guenther@, OK bluhm@.
* For all functions known to be infected by LC_NUMERIC, add shortschwarze2019-01-162-4/+22
| | | | | | | | CAVEATS pointing to the new CAVEATS section in setlocale(3). Make those in wprintf(3) and wscanf(3) more concise since duplicate information is a bad idea. Incompleteness of information originally pointed out by millert@. OK millert@
* Move default numer of pools in the multi-threaded case to 8. Various testsotto2019-01-101-2/+2
| | | | by me and others indicate that it is the optimum.
* Make the "not my pool" searching loop a tiny bit smarter, whileotto2019-01-101-20/+37
| | | | | | making the number of pools variable. Do not document the malloc conf settings atm, don't know yet if they will stay. Thanks to all the testers. ok deraadt@
* Improve speed for the multi-threaded case by reducing lock contention.otto2018-12-101-30/+21
| | | | tested by many; ok florian@
* style; OK ottoflorian2018-12-091-3/+3
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* remove a stray line accidentally left behind in rev. 1.120;schwarze2018-12-051-3/+2
| | | | patch from Hiltjo Posthuma <hiltjo at codemadness dot org>
* Refactor "find the right pool" code into a function. ok djm@ tb@otto2018-11-271-65/+34
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* fold the contents of malloc.conf.5 into malloc.3 and sysctl.2,jmc2018-11-211-6/+118
| | | | | | now that there is essentially no malloc.conf; text tweaked by deraadt; ok otto deraadt
* Introducing malloc_usable_size() was a mistake. While some otherotto2018-11-212-105/+5
| | | | | | | | | | | libs have it, it is a function that is considered harmful, so: Delete malloc_usable_size(). It is a function that blurs the line between malloc managed memory and application managed memory and exposes some of the internal workings of malloc. If an application relies on that, it is likely to break using another implementation of malloc. If you want usable size x, just allocate x bytes. ok deraadt@ and other devs
* Fix compilation on alpha, where DEF_WEAK() really must be paired withguenther2018-11-191-2/+1
| | | | PROTO_NORMAL(). Problem noted by deraadt@
* Implement malloc_usable_size(); ok millert@ deraadt@ and jmc@ for the man pageotto2018-11-182-6/+108
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* zap last remains of malloc.conf; prompted by and ok jmc@otto2018-11-081-6/+6
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* rm FILES section; prompted by Janne Johanssonotto2018-11-061-7/+2
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* Use the new vm.malloc_conf sysctl; ok millert@ deraadt@otto2018-11-061-6/+11
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* Implement C11's aligned_alloc(3). ok guenther@otto2018-11-052-5/+84
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* sys/uio.h is not used anymoreotto2018-04-071-3/+2
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* fix MALLOC_STATS; spotted by and ok semarie@otto2018-03-301-1/+5
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* use _ALIGN() which is uhm a bit OpenBSD-specific, but it means wederaadt2018-03-061-3/+2
| | | | | | don't need to use sys/param.h at all, guess which one i believe is greater namespace polution ok otto
* Use _MAX_PAGE_SHIFT, rather than #ifdef mips64deraadt2018-03-051-6/+2
| | | | ok guenther kettenis
* use consistent style for for loop in unmap(), no functional changeotto2018-02-071-4/+2
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* keep in sync with ld.so malloc.cotto2018-01-301-2/+3
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* word fix; from edgar pettijohnjmc2018-01-301-3/+3
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* - An error in the multithreaded case could print the wrong function nameotto2018-01-281-12/+23
| | | | | | | - Start with a full page of struct region_info's - Save an mprotect in the init code: allocate 3 pages with none and make the middle page r/w instead of a r/w allocation and two calls to make the guard pages none
* - do not junk pages returned by free_bytes(), all freed chunks are alreadyotto2018-01-261-19/+19
| | | | | junked - freezero(): only clear requested size
* Zap the rotor, it was a wrong idea. Cluebat applied by kshe whootto2018-01-181-6/+3
| | | | | came also up with this diff. Simple, no bias and benchmarks show the extra random calls disappear in te measurement noise.
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