| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | fix broken fcntl locks on x86_64 | Rich Felker | 2011-04-14 | 1 | -3/+3 |
| * | numerous fixes to sysv ipc•••some of these definitions were just plain wrong, others based on
outdated ancient "non-64" versions of the kernel interface.
as much as possible has now been moved out of bits/*
these changes break abi (the old abi for these functions was wrong),
but since they were not working anyway it can hardly matter.
| Rich Felker | 2011-04-13 | 3 | -24/+15 |
| * | fix and cleanup suseconds_t/timeval stuff (broken on 64-bit)•••trash in the upper 32 bits was making the kernel sleep forever in
select on 64-bit systems.
| Rich Felker | 2011-04-13 | 1 | -1/+1 |
| * | more types cleanup•••the basic idea is that the only things in alltypes.h should be types
that either vary from system to system (in practice, not just in
theoretical la-la land - this is the implementation so we choose what
constraints we want to impose on ports) or which are needed by
multiple system headers.
| Rich Felker | 2011-04-11 | 1 | -3/+0 |
| * | cleanup types stuff in headers, fix missing u_int*_t in sys/types.h | Rich Felker | 2011-04-11 | 1 | -11/+0 |
| * | add missing float.h macros•••actually FLT_ROUNDS needs to expand to a static inline function that
obtains the current rounding mode and returns it, but that will be
added later with fenv.h stuff.
| Rich Felker | 2011-04-10 | 1 | -0/+3 |
| * | workaround broken msghdr struct on 64bit linux•••POSIX clearly specifies the type of msg_iovlen and msg_controllen, and
Linux ignores it and makes them both size_t instead. to work around
this we add padding (instead of just using the wrong types like glibc
does), but we also need to patch-up the struct before passing it to
the kernel in case the caller did not zero-fill it.
if i could trust the kernel to just ignore the upper 32 bits, this
would not be necessary, but i don't think it will ignore them...
| Rich Felker | 2011-04-08 | 1 | -2/+2 |
| * | add ip6 pktinfo stuff for x86_64•••these defs should probably all be moved out of bits and unified...
| Rich Felker | 2011-04-05 | 1 | -0/+12 |
| * | uncomment IP_PKTINFO•••this was a hack leftover from testing before the initial
check-in to git.
| Rich Felker | 2011-04-05 | 1 | -1/+1 |
| * | fix statvfs syscalls (missing size argument) | Rich Felker | 2011-04-03 | 1 | -1/+1 |
| * | remove obsolete and useless useconds_t type | Rich Felker | 2011-04-01 | 1 | -1/+0 |
| * | somehow timespec tv_nsec had the wrong type on x86_64... fixed | Rich Felker | 2011-04-01 | 1 | -1/+1 |
| * | avoid all malloc/free in timer creation/destruction•••instead of allocating a userspace structure for signal-based timers,
simply use the kernel timer id. we use the fact that thread pointers
will always be zero in the low bit (actually more) to encode integer
timerid values as pointers.
also, this change ensures that the timer_destroy syscall has completed
before the library timer_destroy function returns, in case it matters.
| Rich Felker | 2011-03-30 | 1 | -1/+1 |
| * | some preliminaries for adding POSIX timers | Rich Felker | 2011-03-29 | 1 | -1/+1 |
| * | overhaul cancellation to fix resource leaks and dangerous behavior with signals•••this commit addresses two issues:
1. a race condition, whereby a cancellation request occurring after a
syscall returned from kernelspace but before the subsequent
CANCELPT_END would cause cancellable resource-allocating syscalls
(like open) to leak resources.
2. signal handlers invoked while the thread was blocked at a
cancellation point behaved as if asynchronous cancellation mode wer in
effect, resulting in potentially dangerous state corruption if a
cancellation request occurs.
the glibc/nptl implementation of threads shares both of these issues.
with this commit, both are fixed. however, cancellation points
encountered in a signal handler will not be acted upon if the signal
was received while the thread was already at a cancellation point.
they will of course be acted upon after the signal handler returns, so
in real-world usage where signal handlers quickly return, it should
not be a problem. it's possible to solve this problem too by having
sigaction() wrap all signal handlers with a function that uses a
pthread_cleanup handler to catch cancellation, patch up the saved
context, and return into the cancellable function that will catch and
act upon the cancellation. however that would be a lot of complexity
for minimal if any benefit...
| Rich Felker | 2011-03-24 | 1 | -0/+3 |
| * | fix typo in x86_64 part of syscall overhaul | Rich Felker | 2011-03-19 | 1 | -1/+1 |
| * | syscall overhaul part two - unify public and internal syscall interface•••with this patch, the syscallN() functions are no longer needed; a
variadic syscall() macro allows syscalls with anywhere from 0 to 6
arguments to be made with a single macro name. also, manually casting
each non-integer argument with (long) is no longer necessary; the
casts are hidden in the macros.
some source files which depended on being able to define the old macro
SYSCALL_RETURNS_ERRNO have been modified to directly use __syscall()
instead of syscall(). references to SYSCALL_SIGSET_SIZE and SYSCALL_LL
have also been changed.
x86_64 has not been tested, and may need a follow-up commit to fix any
minor bugs/oversights.
| Rich Felker | 2011-03-19 | 3 | -115/+69 |
| * | overhaul syscall interface•••this commit shuffles around the location of syscall definitions so
that we can make a syscall() library function with both SYS_* and
__NR_* style syscall names available to user applications, provides
the syscall() library function, and optimizes the code that performs
the actual inline syscalls in the library itself.
previously on i386 when built as PIC (shared library), syscalls were
incurring bus lock (lock prefix) overhead at entry and exit, due to
the way the ebx register was being loaded (xchg instruction with a
memory operand). now the xchg takes place between two registers.
further cleanup to arch/$(ARCH)/syscall.h is planned.
| Rich Felker | 2011-03-19 | 2 | -313/+635 |
| * | various legacy and linux-specific stuff•••this commit is part of an effort to make more of busybox work
out-of-the-box.
| Rich Felker | 2011-03-18 | 1 | -0/+1 |
| * | optimize contended normal mutex case; add int compare-and-swap atomic | Rich Felker | 2011-03-17 | 1 | -0/+7 |
| * | match dimensions so we can use all slots without invoking OOB-array-access | Rich Felker | 2011-03-11 | 1 | -5/+5 |
| * | fix missing ENOTSUP error code | Rich Felker | 2011-03-11 | 1 | -0/+1 |
| * | make sigaltstack work (missing macros in signal.h, error conditions) | Rich Felker | 2011-03-10 | 1 | -0/+2 |
| * | fill in some missing siginfo stuff in signal.h | Rich Felker | 2011-02-20 | 1 | -5/+56 |
| * | add missing WIFCONTINUED macro and improve WIFSIGNALED | Rich Felker | 2011-02-19 | 1 | -1/+2 |
| * | support the ugly and deprecated ucontext and sigcontext header stuff...•••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...
| Rich Felker | 2011-02-18 | 1 | -0/+32 |
| * | reorganize pthread data structures and move the definitions to alltypes.h•••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.
| Rich Felker | 2011-02-17 | 1 | -0/+15 |
| * | move stdio stuff that's not arch-specific out of bits | Rich Felker | 2011-02-15 | 1 | -10/+0 |
| * | protect some limit constants with feature test macros on x86_64 | Rich Felker | 2011-02-15 | 1 | -1/+3 |
| * | fix the types of some integer constant limits in headers | Rich Felker | 2011-02-15 | 1 | -2/+2 |
| * | fix directory reading on x86_64 | Rich Felker | 2011-02-15 | 1 | -0/+2 |
| * | fix x86_64 wrongly reporting itself as ILP32 instead of LP64 | Rich Felker | 2011-02-15 | 1 | -2/+2 |
| * | remove standalone syscall cruft•••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.
| Rich Felker | 2011-02-15 | 1 | -11/+1 |
| * | fix some type leakage (timer_t) from x86_64 commit | Rich Felker | 2011-02-15 | 2 | -2/+2 |
| * | Optimize x86_64 atomics to take advantage of 64-bitness. | Nicholas J. Kain | 2011-02-15 | 1 | -9/+8 |
| * | Remove __syscall_lseek from x86_64 syscall.h. | Nicholas J. Kain | 2011-02-15 | 1 | -8/+0 |
| * | Update x86_64 bits to mirror (modulo platform differences) the latest changes•••to i386.
| Nicholas J. Kain | 2011-02-15 | 5 | -15/+20 |
| * | Port musl to x86-64. One giant commit! | Nicholas J. Kain | 2011-02-15 | 32 | -0/+2067 |
