musl - musl - an implementation of the standard library for Linux-based systems

Age	Commit message (Collapse)	Author	Lines
2011-03-03	namespace cleanup in sys/mman.h	Rich Felker	-1/+3

2011-03-03	implement POSIX shared memory	Rich Felker	-0/+42

2011-03-01	use -L/...../ -lgcc instead of /...../libgcc.a in musl-gcc wrapper	Rich Felker	-1/+2
	this should avoid warnings about unused libs when not linking, and might fix some other obscure issues too. i might replace this approach with a completely different one soon though.
2011-03-01	depends on settimeofday which needs _GNU_SOURCE feature test	Rich Felker	-0/+1

2011-02-27	implement futimens and utimensat	Rich Felker	-0/+16

2011-02-27	cleanup namespace in sys/time.h	Rich Felker	-4/+5

2011-02-27	implement fexecve	Rich Felker	-0/+11

2011-02-27	cleanup utf-8 multibyte code, use visibility if possible	Rich Felker	-84/+5
	this code was written independently of musl, with support for a the backwards, nonstandard "31-bit unicode" some libraries/apps might want. unfortunately the extra code (inside #ifdef) makes the source harder to read and makes code that should be simple look complex, so i'm removing it. anyone who wants to use the old code can find it in the history or from elsewhere. also, change the visibility of the __fsmu8 state machine table to hidden, if supported. this should improve performance slightly in shared-library builds.
2011-02-26	fix missing prototype for strsignal	Rich Felker	-0/+2

2011-02-24	various changes in preparation for dynamic linking support	Rich Felker	-8/+24
	prefer using visibility=hidden for __libc internal data, rather than an accessor function, if the compiler has visibility. optimize with -O3 for PIC targets (shared library). without heavy inlining, reloading the GOT register in small functions kills performance. 20-30% size increase for a single libc.so is not a big deal, compared to comparaible size increase in every static binaries. use -Bsymbolic-functions, not -Bsymbolic. global variables are subject to COPY relocations, and thus binding their addresses in the library at link time will cause library functions to read the wrong (original) copies instead of the copies made in the main program's bss section. add entry point, _start, for dynamic linker.
2011-02-24	apply feature test protection to memccpy	Rich Felker	-1/+4

2011-02-24	add implementation of memccpy function	Rich Felker	-0/+32

2011-02-24	fix backwards conditional in stpncpy	Rich Felker	-1/+1
	this only made the function unnecessarily slow on systems with unaligned access, but would of course crash on systems that can't do unaligned accesses (none of which have ports yet).
2011-02-22	rewind must clear the error indicator in addition to seeking	Rich Felker	-2/+5

2011-02-21	change errno to static linkage (improves PIC code generation)	Rich Felker	-4/+2

2011-02-21	cleanup comment cruft in startup code	Rich Felker	-1/+0

2011-02-21	make startup code PIE-compatible	Rich Felker	-2/+4

2011-02-21	remove sample utf-8 code that's not part of the standard library	Rich Felker	-47/+0

2011-02-20	use an accessor function for __libc data pointer when compiled as PIC	Rich Felker	-4/+19
	prior to this change, a large portion of libc was unusable prior to relocation by the dynamic linker, due to dependence on the global data in the __libc structure and the need to obtain its address through the GOT. with this patch, the accessor function __libc_loc is now able to obtain the address of __libc via PC-relative addressing without using the GOT. this means the majority of libc functionality is now accessible right away. naturally, the above statements all depend on having an architecture where PC-relative addressing and jumps/calls are feasible, and a compiler that generates the appropriate code.
2011-02-20	avoid referencing address of extern function from vdprintf	Rich Felker	-1/+6
	this change is in preparation for upcoming PIC/shared library support. the intent is to avoid going through the GOT, mainly so that dprintf is operable immediately, prior to processing of relocations. having dprintf accessible from the dynamic linker will make writing and debugging the dynamic linker much easier.
2011-02-20	shave off 2 bytes from crt1.o _start	Rich Felker	-2/+2

2011-02-20	cleanup asprintf stuff	Rich Felker	-2/+2

2011-02-20	prototypes for GNU asprintf/vasprintf	Rich Felker	-0/+2

2011-02-20	fix %n specifier, again. this time it was storing the wrong value.	Rich Felker	-7/+7

2011-02-20	include sys/sysmacros.h from sys/types.h when _GNU_SOURCE is defined	Rich Felker	-0/+1

2011-02-20	fix typo in inotify structure	Rich Felker	-1/+1

2011-02-20	make malloc(0) return unique pointers rather than NULL	Rich 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.
2011-02-20	fix simple_malloc malloc(0) behavior not to return non-unique pointers	Rich Felker	-0/+1

2011-02-20	fix simple_malloc size restrictions	Rich 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.
2011-02-20	fix null pointer dereference introduced in last sigprocmask commit	Rich Felker	-1/+1

2011-02-20	make real symbols for the legacy (nonstandardized) utmp functions	Rich Felker	-6/+23
	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.
2011-02-20	resolve some header namespace non-issues	Rich Felker	-3/+0
	after re-reading 2.2.2 of POSIX 2008, all of these are in the correct reserved namespaces and do not need protection.
2011-02-20	move the GNU siginfo renaming so it doesn't lead to mismatching names	Rich Felker	-1/+4

2011-02-20	fill in some missing siginfo stuff in signal.h	Rich Felker	-10/+112

2011-02-20	make sys/param.h not depend on PATH_MAX and NAME_MAX	Rich Felker	-2/+2
	this is a nonstandard header used only by backwards programs, but for some reason it's extremely popular. the recent namespace cleanup fixes broke it, because PATH_MAX and NAME_MAX will not be defined unless an approriate feature test macro has been defined. moreover, it's too late to just #define _GNU_SOURCE in param.h, since limits.h may have already been included. let's just hard-code standard values and be done with it.
2011-02-19	workaround gcc bug 46926 by providing a dumb sincos implementation	Rich 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.
2011-02-19	use rt_sigprocmask, not legacy sigprocmask, syscall in pthread exit code	Rich Felker	-1/+1

2011-02-19	fix typo in wordexp.h (note that the function is still unimplemented)	Rich Felker	-1/+1

2011-02-19	implement the remaining clock_* interfaces	Rich Felker	-0/+36

2011-02-19	race condition fix: block all signals before decrementing thread count	Rich 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.
2011-02-19	prevent sigprocmask/pthread_sigmask from blocking implementation signals	Rich 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.
2011-02-19	make pthread_exit run dtors for last thread, wait to decrement thread count	Rich Felker	-3/+3

2011-02-19	make mktemp match the historic behavior, and update functions that use it	Rich 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.
2011-02-19	fix major bug created from copying mkdtemp logic	Rich Felker	-1/+1

2011-02-19	add syscall wrappers for inotify	Rich Felker	-0/+83

2011-02-19	cleanup cruft left from when kernel and user time_t disagreed	Rich Felker	-12/+3

2011-02-19	prototype wait3 and wait4	Rich Felker	-3/+6

2011-02-19	add missing WIFCONTINUED macro and improve WIFSIGNALED	Rich Felker	-2/+4

2011-02-19	prototypes for brk and sbrk	Rich Felker	-0/+2

2011-02-18	support the ugly and deprecated ucontext and sigcontext header stuff...	Rich Felker	-20/+69
	only the structures, not the functions from ucontext.h, are supported at this point. the main goal of this commit is to make modern gcc with dwarf2 unwinding build without errors. honestly, it probably doesn't matter how we define these as long as they have members with the right names to prevent errors while compiling libgcc. the only time they will be used is for propagating exceptions across signal-handler boundaries, which invokes undefined behavior anyway. but as-is, they're probably correct and may be useful to various low-level applications dealing with virtualization, jit code generation, and so on...