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2011-02-20cleanup asprintf stuffRich Felker-2/+2
2011-02-20fix %n specifier, again. this time it was storing the wrong value.Rich Felker-7/+7
2011-02-20make malloc(0) return unique pointers rather than NULLRich Felker-6/+10
this change is made with some reluctance, but i think it's for the best. correct programs must handle either behavior, so there is little advantage to having malloc(0) return NULL. and i managed to actually make the malloc code slightly smaller with this change.
2011-02-20fix simple_malloc malloc(0) behavior not to return non-unique pointersRich Felker-0/+1
2011-02-20fix simple_malloc size restrictionsRich Felker-5/+6
do not allow allocations that overflow ptrdiff_t; fix some overflow checks that were not quite right but didn't matter due to address layout implementation.
2011-02-20fix null pointer dereference introduced in last sigprocmask commitRich Felker-1/+1
2011-02-20make real symbols for the legacy (nonstandardized) utmp functionsRich Felker-0/+8
this is needed in the long term for ABI compatibility anyway, and in the immediate, it helps with building broken programs like GNU screen that try to prototype the functions themselves rather than using the header.
2011-02-19workaround gcc bug 46926 by providing a dumb sincos implementationRich Felker-0/+8
note that this library itself is built with -ffreestanding so sincos.c should not be miscompiled even if the gcc used to compile musl has this bug.
2011-02-19use rt_sigprocmask, not legacy sigprocmask, syscall in pthread exit codeRich Felker-1/+1
2011-02-19implement the remaining clock_* interfacesRich Felker-0/+36
2011-02-19race condition fix: block all signals before decrementing thread countRich Felker-22/+2
the existence of a (kernelspace) thread must never have observable effects after the thread count is decremented. if signals are not blocked, it could end up handling the signal for rsyscall and contributing towards the count of threads which have changed ids, causing a thread to be missed. this could lead to one thread retaining unwanted privilege level. this change may also address other subtle race conditions in application code that uses signals.
2011-02-19prevent sigprocmask/pthread_sigmask from blocking implementation signalsRich Felker-3/+5
this code was wrongly disabled because the old version was trying to be too clever and didn't work. replaced it with a simple version for now.
2011-02-19make pthread_exit run dtors for last thread, wait to decrement thread countRich Felker-3/+3
2011-02-19make mktemp match the historic behavior, and update functions that use itRich Felker-5/+8
the historic mktemp is supposed to blank the template string on failure, rather than returning 0. just zero the first character so that mkstemp and mkdtemp can still retry with O(1) space requirement.
2011-02-19fix major bug created from copying mkdtemp logicRich Felker-1/+1
2011-02-19add syscall wrappers for inotifyRich Felker-0/+28
2011-02-19cleanup cruft left from when kernel and user time_t disagreedRich Felker-12/+3
2011-02-18add pthread_atfork interfaceRich Felker-3/+55
note that this presently does not handle consistency of the libc's own global state during forking. as per POSIX 2008, if the parent process was threaded, the child process may only call async-signal-safe functions until one of the exec-family functions is called, so the current behavior is believed to be conformant even if non-ideal. it may be improved at some later time.
2011-02-18major improvements to temp file name generatorRich Felker-16/+21
use current time in nanoseconds and some potentially-random (if aslr is enabled) pointer values for the initial tempfile name generation, and step via a cheap linear prng on collisions. limit the number of retry attempts to prevent denial of service attacks even if an attacker can guess the filenames.
2011-02-18reformat mkstemp like mkdtempRich Felker-7/+5
this is cleaner and makes it easy to impose a limit on the number of retries later if it seems desirable to do so.
2011-02-17add portable lchown (trivial to support and a few ancient things want it..)Rich Felker-0/+7
2011-02-17reorganize pthread data structures and move the definitions to alltypes.hRich Felker-83/+102
this allows sys/types.h to provide the pthread types, as required by POSIX. this design also facilitates forcing ABI-compatible sizes in the arch-specific alltypes.h, while eliminating the need for developers changing the internals of the pthread types to poke around with arch-specific headers they may not be able to test.
2011-02-17make daemon try the operations that might fail before fork rather than afterRich Felker-12/+10
2011-02-17daemon should check for failures and return -1Rich Felker-5/+8
2011-02-17don't compare elements with themselves during qsort.Rich Felker-1/+1
this is actually a workaround for a bug in gcc, whereby it asserts inequality of the keys being compared...
2011-02-16fix printf %n specifier - missing breaks had it clobbering memoryRich Felker-7/+7
2011-02-16patch by njk, simplifies thread register initialization for x86_64Rich Felker-4/+0
It's not necessary to save any registers on the stack across syscall in x86_64 __set_thread_area. Don't waste cycles or bytes on it.
2011-02-16patch from njk: make x86_64 __uniclone branchless.Rich Felker-6/+6
2011-02-16fix compile failure: legacy cuserid needs to define feature testRich Felker-0/+1
2011-02-15remove standalone syscall cruftRich Felker-10/+0
this was originally written for an early draft of the library where non-standard functions would reside in a static library separate from the shared libc.so, which would implement a pure standard. the idea was not to depend on an implementation-dependent __syscall_ret function in the main libc. but it turned out to be better to put everything in a single library for both static and dynamic linking uses, and thus the (incomplete) remnants of this feature were just enlarging the source and binary.
2011-02-15Port musl to x86-64. One giant commit!Nicholas J. Kain-0/+138
2011-02-15yet another ugly legacy syscall rename...Rich Felker-1/+1
2011-02-15fix getrlimit handling on 32-bit systems, and ease porting to 64-bitRich Felker-3/+3
2011-02-15cleanup socketcall syscall interface to ease porting to sane(r) archsRich Felker-94/+17
2011-02-15finish moving 32-bit-specific junk out of source files.Rich Felker-21/+11
2011-02-15move arch-specific internal headers into placeRich Felker-637/+0
2011-02-15finish unifying thread register handling in preparation for portingRich Felker-52/+27
2011-02-15begin unifying clone/thread management interface in preparation for portingRich Felker-34/+22
2011-02-15make pthread_create return EAGAIN on resource failure, as required by POSIXRich Felker-1/+1
2011-02-14guard against hard links to non-ordinary-files when reading tcb shadowRich Felker-2/+4
2011-02-14more header cleanup and conformance fixes - string.hRich Felker-0/+1
2011-02-14header cleanup, conformance fixes - signalsRich Felker-6/+3
2011-02-14another pointer signedness fixRich Felker-1/+1
2011-02-14fix some pointer signedness issues (this was invalid C)Rich Felker-3/+3
2011-02-14more header fixes, minor warning fixRich Felker-2/+5
2011-02-14ensure standard functions mk[sd]temp don't depend on removed function mktempRich Felker-5/+9
2011-02-14put confstr.c with the other conf functionsRich Felker-0/+0
2011-02-14begin namespace-cleanup of standard C headersRich Felker-0/+2
2011-02-13use a more-correct integer type, and silence 64-bit warnings as a bonusRich Felker-2/+2
2011-02-13fixed missing cast in the non-i386 version of shmat (preparation for ports)Rich Felker-1/+1