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* split up installation targetRich Felker2012-08-171-2/+10
| | | | patch by Luca Barbato (lu_zero)
* fix extremely rare but dangerous race condition in robust mutexesRich Felker2012-08-173-20/+33
| | | | | | | | | | if new shared mappings of files/devices/shared memory can be made between the time a robust mutex is unlocked and its subsequent removal from the pending slot in the robustlist header, the kernel can inadvertently corrupt data in the newly-mapped pages when the process terminates. i am fixing the bug by using the same global vm lock mechanism that was used to fix the race condition with unmapping barriers after pthread_barrier_wait returns.
* fix float parsing logic for long decimal expansionsRich Felker2012-08-171-1/+1
| | | | | | | | | | | | | | | | this affects at least the case of very long inputs, but may also affect shorter inputs that become long due to growth while upscaling. basically, the logic for the circular buffer indices of the initial base-10^9 digit and the slot one past the final digit, and for simplicity of the loop logic, assumes an invariant that they're not equal. the upscale loop, which can increase the length of the base-10^9 representation, attempted to preserve this invariant, but was actually only ensuring that the end index did not loop around past the start index, not that the two never become equal. the main (only?) effect of this bug was that subsequent logic treats the excessively long number as having no digits, leading to junk results.
* handle null arguments to legacy bsd err.h functionsRich Felker2012-08-151-2/+2
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* improve headers to better deal with removed-in-posix-2008 featuresRich Felker2012-08-152-13/+22
| | | | | | | | | with this patch, setting _POSIX_SOURCE, or setting _POSIX_C_SOURCE or _XOPEN_SOURCE to an old version, will bring back the interfaces that were removed in POSIX 2008 - at least the ones i've covered so far, which are gethostby*, usleep, and ualarm. if there are other functions still in widespread use that were removed for which similar changes would be beneficial, they can be added just like this.
* add missing xattr functionsRich Felker2012-08-152-0/+18
| | | | not sure why these were originally omitted..
* update copyright/credits for recent code additionsRich Felker2012-08-151-2/+12
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* support configuring cross compiling with CROSS_COMPILE prefix variableRich Felker2012-08-141-3/+6
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* Merge remote-tracking branch 'nsz/bsd'Rich Felker2012-08-131-25/+26
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| * math: fix _BSD_SOURCE namespace in math.hnsz2012-08-131-25/+26
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* | Merge remote-tracking branch 'nsz/exp'Rich Felker2012-08-132-40/+35
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| * math: fix exp.s on i386 and x86_64 so the exception flags are correctnsz2012-08-082-40/+35
| | | | | | | | exp(inf), exp(-inf), exp(nan) used to raise wrong flags
* | remove significandlRich Felker2012-08-132-8/+0
| | | | | | | | | | | | | | this function never existed historically; since the float/double functions it's based on are nonstandard and deprecated, there's really no justification for its existence except that glibc has it. it can be added back if there's ever really a need...
* | add significand[fl] math functionsRich Felker2012-08-134-0/+25
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* | publicly expose getdents api under _BSD_SOURCERich Felker2012-08-131-0/+7
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* | memcpy asm for i386 and x86_64Rich Felker2012-08-112-0/+51
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* | avoid need for -march=mips2 to compile mips atomic.h asmRich Felker2012-08-111-0/+8
| | | | | | | | | | | | linux guarantees ll/sc are always available. on mips1, they will be emulated by the kernel. thus they are part of the linux mips1 abi and safe to use.
* | remove unused but buggy code from strstr.cRich Felker2012-08-111-10/+0
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* | remove buggy short-string wcsstr implementation; always use twowayRich Felker2012-08-111-9/+0
| | | | | | | | | | | | since this interface is rarely used, it's probably best to lean towards keeping code size down anyway. one-character needles will still be found immediately by the initial wcschr call anyway.
* | add bsd fgetln functionRich Felker2012-08-114-1/+25
| | | | | | | | | | optimized to avoid allocation and return lines directly out of the stream buffer whenever possible.
* | minor but worthwhile optimization in printf: avoid expensive strspnRich Felker2012-08-101-4/+2
| | | | | | | | | | | | the strspn call was made for every format specifier and end-of-string, even though the expected return value was 1-2 for normal usage. replace with simple loop.
* | trivial optimization to printf: avoid wasted call frameRich Felker2012-08-101-1/+1
| | | | | | | | | | | | | | | | amusingly, this cuts more than 10% off the run time of printf("a"); on the machine i tested it on. sadly the same optimization is not possible for snprintf without duplicating all the pseudo-FILE setup code, which is not worth it.
* | use int instead of long for ptrdiff_t on all 32-bit archsRich Felker2012-08-102-2/+2
| | | | | | | | | | | | | | | | this is needed to match the underlying "ABI" standards. it's not really an ABI issue since the binary representations are the same, but having the wrong type can lead to errors when the type arising from a difference-of-pointers expression does not match the defined type of ptrdiff_t. most of the problems affect C++, not C.
* | fix incorrect ptrdiff_t type on mipsRich Felker2012-08-101-1/+1
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* | add blowfish hash support to cryptRich Felker2012-08-103-8/+806
| | | | | | | | | | | | | | there are still some discussions going on about tweaking the code, but at least thing brings us to the point of having something working in the repository. hopefully the remaining major hashes (md5,sha) will follow soon.
* | fix (hopefully) all hard-coded 8's for kernel sigset_t sizeRich Felker2012-08-0914-20/+31
| | | | | | | | | | | | | | | | | | | | some minor changes to how hard-coded sets for thread-related purposes are handled were also needed, since the old object sizes were not necessarily sufficient. things have gotten a bit ugly in this area, and i think a cleanup is in order at some point, but for now the goal is just to get the code working on all supported archs including mips, which was badly broken by linux rejecting syscalls with the wrong sigset_t size.
* | add defines for number of sigset_t bytes syscalls expectRich Felker2012-08-094-0/+8
| | | | | | | | yet another gratuitous mips incompatibility...
* | make crypt return an unmatchable hash rather than NULL on failureRich Felker2012-08-091-5/+2
|/ | | | | | | | | | | | | | | | unfortunately, a large portion of programs which call crypt are not prepared for its failure and do not check that the return value is non-null before using it. thus, always "succeeding" but giving an unmatchable hash is reportedly a better behavior than failing on error. it was suggested that we could do this the same way as other implementations and put the null-to-unmatchable translation in the wrapper rather than the individual crypt modules like crypt_des, but when i tried to do it, i found it was making the logic in __crypt_r for keeping track of which hash type we're working with and whether it succeeded or failed much more complex, and potentially error-prone. the way i'm doing it now seems to have essentially zero cost, anyway.
* further fixes for mips ioctl.h headerRich Felker2012-08-071-4/+4
| | | | untested; hopefully it's right now
* fix another mips gratuitous-incompatibility bug: ioctl numbersRich Felker2012-08-071-2/+2
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* fix bug dlsym bug that slipped in during dynamic linker cleanupRich Felker2012-08-071-1/+1
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* make configure accept mipselRich Felker2012-08-051-1/+1
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* dlsym RTLD_NEXT support for mipsRich Felker2012-08-051-0/+15
| | | | untested
* fix socket.h on mipsRich Felker2012-08-052-0/+6
| | | | | why does mips have to be gratuitously incompatible in every possible imaginable way?
* align mips _init/_fini functionsRich Felker2012-08-051-0/+2
| | | | | | since .init and .fini are not .text, the toolchain does not seem to align them for code by default. this yields random breakage depending on the object sizes the linker is dealing with.
* more changes that were lost when committing mips dynamic linkerRich Felker2012-08-051-0/+4
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* more stuff lost committing mips dynamic linkerRich Felker2012-08-051-2/+2
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* fix change lost in the process of integrating mips dynamic linkerRich Felker2012-08-051-2/+2
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* remove configure check disabling shared libraries on mipsRich Felker2012-08-051-4/+0
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* mips dynamic linker supportRich Felker2012-08-053-3/+102
| | | | | | | | | | | | | | | | | | not heavily tested, but the basics are working. the basic concept is that the dynamic linker entry point code invokes a pure-PIC (no global accesses) C function in reloc.h to perform the early GOT relocations needed to make the dynamic linker itself functional, then invokes __dynlink like on other archs. since mips uses some ugly arch-specific hacks to optimize relocating the GOT (rather than just using the normal DT_REL[A] tables like on other archs), the dynamic linker has been modified slightly to support calling arch-specific relocation code in reloc.h. most of the actual mips-specific behavior was developed by reading the output of readelf on libc.so and simple executable files. i could not find good reference information on which relocation types need to be supported or their semantics, so it's possible that some legitimate usage cases will not work yet.
* make dynlink.lo depend on reloc.h in makefileRich Felker2012-08-051-0/+2
| | | | | | this is mainly a development convenience but will also ensure users building from latest git always get up-to-date arch-specific dynamic linker code without having to "make clean".
* more cleanup of dynamic linker internalsRich Felker2012-08-051-8/+9
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* more dynamic linker internals cleanupRich Felker2012-08-051-6/+6
| | | | | | changing the string printed for the dso name is not a regression; the old code was simply using the wrong dso name (head rather than the dso currently being relocated). this will be fixed in a later commit.
* dynamic linker internals cleanupRich Felker2012-08-051-5/+7
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* floating point support for arm setjmp/longjmpRich Felker2012-08-052-2/+54
| | | | | | not heavily tested, but at least they don't seem to break anything on soft float targets with or without coprocessors. they check the auxv AT_HWCAP flags to determine which coprocessor, if any, is available.
* release notes for 0.9.3 v0.9.3Rich Felker2012-08-021-0/+35
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* abstract out compiler runtime library for linking libc.soRich Felker2012-08-021-1/+2
| | | | | this allows config.mak to override the default -lgcc for building with other compilers such as pcc/clang/etc.
* fix argument type error on wcwidth functionRich Felker2012-08-021-2/+2
| | | | | | | since the correct declaration was not visible, and since the representation of the types wchar_t and wint_t always match, a compiler would have to go out of its way to make this bug manifest, but better to fix it anyway.
* fix missing static in getusershell (namespace pollution)Rich Felker2012-08-021-1/+1
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* optimize mempcpy to minimize need for data saved across the callRich Felker2012-07-311-2/+1
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