| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | add crypt_md5 password hash•••contributed by nsz
| Rich Felker | 2012-09-15 | 2 | -2/+285 |
| * | fix stupid bug in updating of O_ACCMODE for O_SEARCH support•••this could cause major bugs, and warrants a fix release right away.
| Rich Felker | 2012-09-15 | 1 | -1/+1 |
| * | 0.9.5 release notes | Rich Felker | 2012-09-15 | 1 | -0/+32 |
| * | fix syscall asm constraints for arm too•••no problems were detected so far, but the constraints seem to have
been invalid just like the mips ones.
| Rich Felker | 2012-09-15 | 1 | -4/+4 |
| * | revert low rounds-count limits in crypt hashes•••it was determined in discussion that these kind of limits are not
sufficient to protect single-threaded servers against denial of
service attacks from maliciously large round counts. the time scales
simply vary too much; many users will want login passwords with rounds
counts on a scale that gives decisecond latency, while highly loaded
webservers will need millisecond latency or shorter.
still some limit is left in place; the idea is not to protect against
attacks, but to avoid the runtime of a single call to crypt being, for
all practical purposes, infinite, so that configuration errors can be
caught and fixed without bringing down whole systems. these limits are
very high, on the order of minute-long runtimes for modest systems.
| Rich Felker | 2012-09-15 | 4 | -4/+4 |
| * | update mips cancellation-point syscall asm with 7-arg and r25 fixes•••these fixes were already made to the normal syscall asm but not the
cancellation point version.
| Rich Felker | 2012-09-15 | 1 | -2/+5 |
| * | fix buggy constraints in mips inline syscall asm•••if same register is used for input/output, the compiler must be told.
otherwise is generates random junk code that clobbers the result. in
pure syscall-wrapper functions, nothing went wrong, but in more
complex functions where register allocation is non-trivial, things
broke badly.
| Rich Felker | 2012-09-15 | 1 | -2/+2 |
| * | workaround gcc got-register-reload performance problems in malloc•••with this patch, the malloc in libc.so built with -Os is nearly the
same speed as the one built with -O3. thus it solves the performance
regression that resulted from removing the forced -O3 when building
libc.so; now libc.so can be both small and fast.
| Rich Felker | 2012-09-14 | 1 | -4/+8 |
| * | remove forced -O3 from shared library CFLAGS•••I originally added -O3 for shared libraries to counteract very bad
behavior by GCC when building PIC code: it insists on reloading the
GOT register in static functions that need it, even if the address of
the function is never leaked from the translation unit and all local
callers of the function have already loaded the GOT register. this
measurably degrades performance in a few key areas like malloc. the
inlining done at -O3 avoids the issue, but that's really not a good
reason for overriding the user's choice of optimization level.
| Rich Felker | 2012-09-14 | 1 | -1/+1 |
| * | use vfork if possible in posix_spawn•••vfork is implemented as the fork syscall (with no atfork handlers run)
on archs where it is not available, so this change does not introduce
any change in behavior or regression for such archs.
| Rich Felker | 2012-09-14 | 1 | -1/+3 |
| * | strsep is BSD|GNU, not GNU-only; it's originally from BSD | Rich Felker | 2012-09-13 | 1 | -1/+4 |
| * | add O_PATH/O_SEARCH support to fcntl.h•••I'm not 100% sure that Linux's O_PATH meets the POSIX requirements for
O_SEARCH, but it seems very close if not perfect. and old kernels
ignore it, so O_SEARCH will still work as desired as long as the
caller has read permissions to the directory.
| Rich Felker | 2012-09-13 | 5 | -1/+9 |
| * | improve mips syscall asm constraints to use immediates, if possible•••by using the "ir" constraint (immediate or register) and the carefully
constructed instruction addu $2,$0,%2 which can take either an
immediate or a register for %2, the new inline asm admits maximal
optimization with no register spillage to the stack when the compiler
successfully performs constant propagration, but still works by
allocating a register when the syscall number cannot be recognized as
a constant. in the case of syscalls with 0-3 arguments it barely
matters, but for 4-argument syscalls, using an immediate for the
syscall number avoids creating a stack frame for the syscall wrapper
function.
| Rich Felker | 2012-09-11 | 1 | -12/+21 |
| * | eliminate assumption that mips syscall restart preserves r25•••all past and current kernel versions have done so, but there seems to
be no reason it's necessary and the sentiment from everyone I've asked
has been that we should not rely on it. instead, use r7 (an argument
register) which will necessarily be preserved upon syscall restart.
however this only works for 0-3 argument syscalls, and we have to
resort to the function call for 4-argument syscalls.
| Rich Felker | 2012-09-10 | 1 | -23/+12 |
| * | asm for memmove on i386 and x86_64•••for the sake of simplicity, I've only used rep movsb rather than
breaking up the copy for using rep movsd/q. on all modern cpus, this
seems to be fine, but if there are performance problems, there might
be a need to go back and add support for rep movsd/q.
| Rich Felker | 2012-09-10 | 2 | -0/+36 |
| * | fix another ppoll issue (missing sigset_t size argument) | Rich Felker | 2012-09-10 | 1 | -1/+1 |
| * | reenable word-at-at-time copying in memmove•••before restrict was added, memove called memcpy for forward copies and
used a byte-at-a-time loop for reverse copies. this was changed to
avoid invoking UB now that memcpy has an undefined copying order,
making memmove considerably slower.
performance is still rather bad, so I'll be adding asm soon.
| Rich Felker | 2012-09-10 | 1 | -4/+27 |
| * | fix ppoll with null timeout argument | Rich Felker | 2012-09-10 | 1 | -2/+2 |
| * | add LIBCC (compiler runtime) logic and override to configure•••this should both fix the issue with ARM needing -lgcc_eh (although
that's really a bug in the libgcc build process that's causing
considerable bloat, which should be fixed) and make it easier to build
musl using clang/llvm in place of gcc. unfortunately I don't know a
good way to detect and support pcc's -lpcc since it's not in pcc's
default library search path...
| Rich Felker | 2012-09-10 | 1 | -0/+7 |
| * | add setdomainname syscall, fix getdomainname (previously a stub) | Rich Felker | 2012-09-09 | 3 | -1/+18 |
| * | mincore syscall wrapper | Rich Felker | 2012-09-09 | 2 | -0/+9 |
| * | fix up lfs64 junk for preadv/pwritev | Rich Felker | 2012-09-09 | 3 | -2/+7 |
| * | add preadv/pwritev syscall wrappers | Rich Felker | 2012-09-09 | 3 | -0/+35 |
| * | fix typo introduced in poll.h | Rich Felker | 2012-09-09 | 1 | -1/+1 |
| * | add linux ppoll syscall wrapper | Rich Felker | 2012-09-09 | 2 | -0/+19 |
| * | reenable sync_file_range; should no longer break on mips | Rich Felker | 2012-09-09 | 1 | -2/+2 |
| * | add 7-arg syscall support for mips•••no syscalls actually use that many arguments; the issue is that some
syscalls with 64-bit arguments have them ordered badly so that
breaking them into aligned 32-bit half-arguments wastes slots with
padding, and a 7th slot is needed for the last argument.
| Rich Felker | 2012-09-09 | 2 | -4/+8 |
| * | inline syscall support for arm•••most pure-syscall-wrapper functions compile to the smallest/simplest
code possible (save r7 ; load syscall # ; svc 0 ; restore r7 ; tail
call to __syscall_ret).
| Rich Felker | 2012-09-09 | 1 | -0/+53 |
| * | inline syscall support for mips•••this drastically reduces the size of some functions which are purely
syscall wrappers.
disabled for clang due to known bugs satisfying register constraints.
| Rich Felker | 2012-09-09 | 1 | -0/+57 |
| * | fix mips syscall_cp_asm code (saved register usage) | Rich Felker | 2012-09-09 | 1 | -2/+2 |
| * | fix broken mips syscall asm•••this code was using $10 to save the syscall number, but $10 is not
necessarily preserved by the kernel across syscalls. only mattered for
syscalls that got interrupted by a signal and restarted. as far as i
can tell, $25 is preserved by the kernel across syscalls.
| Rich Felker | 2012-09-09 | 1 | -2/+2 |
| * | disable sync_file_range for now•••something is wrong with the logic for the argument layout, resulting
in compile errors on mips due to too many args to syscall... further
information on how it's supposed to work will be needed before it can
be reactivated.
| Rich Felker | 2012-09-08 | 1 | -2/+3 |
| * | syscall organization overhaul•••now public syscall.h only exposes __NR_* and SYS_* constants and the
variadic syscall function. no macros or inline functions, no
__syscall_ret or other internal details, no 16-/32-bit legacy syscall
renaming, etc. this logic has all been moved to src/internal/syscall.h
with the arch-specific parts in arch/$(ARCH)/syscall_arch.h, and the
amount of arch-specific stuff has been reduced to a minimum.
changes still need to be reviewed/double-checked. minimal testing on
i386 and mips has already been performed.
| Rich Felker | 2012-09-08 | 10 | -655/+420 |
| * | add acct syscall source file, omitted in last syscalls commit | Rich Felker | 2012-09-08 | 1 | -0/+9 |
| * | add acct, accept4, setns, and dup3 syscalls (linux extensions)•••based on patch by Justin Cormack
| Rich Felker | 2012-09-08 | 8 | -0/+113 |
| * | add IPPROTO_HOPOPTS to in.h | Rich Felker | 2012-09-08 | 1 | -0/+1 |
| * | add IPPROTO_MAX to in.h | Rich Felker | 2012-09-08 | 1 | -0/+1 |
| * | fix redundant _Noreturn def in err.h•••not sure why this was missed in the earlier commit.
| Rich Felker | 2012-09-08 | 1 | -7/+1 |
| * | remove all remaining redundant __restrict/__inline/_Noreturn defs | Rich Felker | 2012-09-08 | 14 | -76/+14 |
| * | sysmacros major/minor: result should have type unsigned int, not dev_t | Rich Felker | 2012-09-08 | 1 | -2/+2 |
| * | add linux tee syscall | Rich Felker | 2012-09-08 | 2 | -0/+9 |
| * | add linux sync_file_range syscall | Rich Felker | 2012-09-08 | 2 | -0/+20 |
| * | move fallocate syscall wrapper to linux-specific syscalls dir | Rich Felker | 2012-09-08 | 1 | -0/+0 |
| * | add linux readahead syscall | Rich Felker | 2012-09-08 | 2 | -0/+9 |
| * | add fallocate (nonstandardized) function•••this is equivalent to posix_fallocate except that it has an extra
mode/flags argument to control its behavior, and stores the error in
errno rather than returning an error code.
| Rich Felker | 2012-09-08 | 2 | -0/+12 |
| * | fix broken fallocate syscall in posix_fallocate•••the syscall takes an extra flag argument which should be zero to meet
the POSIX requirements.
| Rich Felker | 2012-09-08 | 1 | -1/+1 |
| * | add timerfd interfaces (untested) | Rich Felker | 2012-09-08 | 2 | -0/+35 |
| * | add stdnoreturn.h (C11)•••features.h contains the fallback logic for pre-C11 compilers
| Rich Felker | 2012-09-08 | 1 | -0/+5 |
| * | TCP_* is in the reserved namespace for tcp.h; make use of that | Rich Felker | 2012-09-07 | 1 | -3/+4 |
| * | remove unneeded judgemental commentary from ftw.h | Rich Felker | 2012-09-07 | 1 | -4/+0 |
