| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | change sem_trywait algorithm so it never has to call __wake | Rich Felker | 2011-04-14 | 1 | -3/+2 |
| * | cheap trick to further optimize locking normal mutexes | Rich Felker | 2011-04-14 | 2 | -2/+2 |
| * | use a separate signal from SIGCANCEL for SIGEV_THREAD timers•••otherwise we cannot support an application's desire to use
asynchronous cancellation within the callback function. this change
also slightly debloats pthread_create.c.
| Rich Felker | 2011-04-14 | 6 | -11/+29 |
| * | simplify cancellation point handling•••we take advantage of the fact that unless self->cancelpt is 1,
cancellation cannot happen. so just increment it by 2 to temporarily
block cancellation. this drops pthread_create.o well under 1k.
| Rich Felker | 2011-04-13 | 2 | -16/+5 |
| * | simplify syslog, add vsyslog interface (nonstandard)•••with datagram sockets, depending on fprintf not to flush the output
early was very fragile; the new version simply uses a small fixed-size
buffer. it could be updated to dynamic-allocate large buffers if
needed, but i can't envision any admin being happy about finding
64kb-long lines in their syslog...
| Rich Felker | 2011-04-13 | 1 | -31/+36 |
| * | remove useless SIGPIPE protection from syslog•••per the standard, SIGPIPE is not generated for SOCK_DGRAM.
| Rich Felker | 2011-04-13 | 1 | -9/+0 |
| * | fix syslog (corrected SIGPIPE blocking, and using dgram instead of stream)•••it actually appears the hacks to block SIGPIPE are probably not
necessary, and potentially harmful. if i can confirm this, i'll remove
them.
| Rich Felker | 2011-04-13 | 1 | -10/+8 |
| * | 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outdated ancient "non-64" versions of the kernel interface.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 | -5/+5 |
| * | add syscall wrapper for flock•••it should be noted that flock does not mix well with standard fcntl
locking, but nonetheless some applications will attempt to use flock
instead of fcntl if both exist. options to configure or small patches
may be needed. debian maintainers have plenty of experience with this
unfortunate situation...
| Rich Felker | 2011-04-13 | 1 | -0/+7 |
| * | fix bug whereby getopt_long allowed mismatch in last char of option name | Rich Felker | 2011-04-13 | 1 | -1/+1 |
| * | implement getgrouplist (for initgroups), formerly dummied-out | Rich Felker | 2011-04-13 | 1 | -4/+16 |
| * | fix prototypes/signature for setgroups, etc. | Rich Felker | 2011-04-13 | 1 | -1/+1 |
| * | implement memrchr (nonstandard) and optimize strrchr in terms of it | Rich Felker | 2011-04-13 | 2 | -4/+15 |
| * | add ptsname_r (nonstandard) and split ptsname (standard) to separate file•••this eliminates the ugly static buffer in programs that use ptsname_r.
| Rich Felker | 2011-04-13 | 2 | -11/+16 |
| * | speed up threaded fork•••after fork, we have a new process and the pid is equal to the tid of
the new main thread. there is no need to make two separate syscalls to
obtain the same number.
| Rich Felker | 2011-04-12 | 1 | -2/+1 |
| * | optimize ntohl etc. in terms of bswap functions•••we can do this without violating the namespace now that they are
macros/inline functions rather than extern functions. the motivation
is that gcc was generating giant, slow, horrible code for the old
functions, and now generates a single byte-swapping instruction.
| Rich Felker | 2011-04-12 | 4 | -20/+12 |
| * | move bswap functions to static inline in byteswap.h | Rich Felker | 2011-04-12 | 2 | -16/+0 |
| * | fix broken bswap_32 | Rich Felker | 2011-04-12 | 1 | -1/+1 |
| * | fix printf("%.9g", 1.1) and similar not dropping trailing zeros | Rich Felker | 2011-04-12 | 1 | -1/+3 |
| * | fix errno handling in scandir:•••1. saved errno was not being restored, illegally clearing errno to 0.
2. no need to backup and save errno around free; it will not touch
except perhaps when the program has already invoked UB...
| Rich Felker | 2011-04-11 | 1 | -2/+1 |
| * | fix fputwc return value | Rich Felker | 2011-04-11 | 1 | -1/+1 |
| * | remove ugly warning-suppression hack from crypt - this invokes UB! | Rich Felker | 2011-04-11 | 1 | -1/+1 |
| * | run pthread tsd destructors when a timer thread pretends to exit | Rich Felker | 2011-04-09 | 1 | -0/+6 |
| * | greatly improve SIGEV_THREAD timers•••calling pthread_exit from, or pthread_cancel on, the timer callback
thread will no longer destroy the timer.
| Rich Felker | 2011-04-09 | 3 | -15/+21 |
| * | work around a nasty bug in linux readv syscall•••according to posix, readv "shall be equivalent to read(), except..."
that it places the data into the buffers specified by the iov array.
however on linux, when reading from a terminal, each iov element
behaves almost like a separate read. this means that if the first iov
exactly satisfied the request (e.g. a length-one read of '\n') and the
second iov is nonzero length, the syscall will block again after
getting the blank line from the terminal until another line is read.
simply put, entering a single blank line becomes impossible.
the solution, fortunately, is simple. whenever the buffer size is
nonzero, reduce the length of the requested read by one byte and let
the last byte go through the buffer. this way, readv will already be
in the second (and last) iov, and won't re-block on the second iov.
| Rich Felker | 2011-04-09 | 1 | -3/+4 |
| * | better fix sysconf pthread stack min | Rich Felker | 2011-04-08 | 1 | -1/+1 |
| * | consistency with pthread stack min in limits.h | Rich Felker | 2011-04-08 | 1 | -1/+1 |
| * | fix broken sigsetjmp on x86_64 | Rich Felker | 2011-04-08 | 1 | -7/+9 |
| * | 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 | 2 | -0/+21 |
| * | fix ipv6 address printing: 2001 appeared as 201, etc. | Rich Felker | 2011-04-08 | 1 | -3/+5 |
| * | fix broken dns response parsing code that made most ipv6 lookups fail | Rich Felker | 2011-04-08 | 1 | -4/+6 |
| * | return the requested string as the "canonical name" for numeric addresses•••previously NULL was returned in ai_canonname, resulting in crashes in
some callers. this behavior was incorrect. note however that the new
behavior differs from glibc, which performs reverse dns lookups. POSIX
is very clear that a reverse DNS lookup must not be performed for
numeric addresses.
| Rich Felker | 2011-04-08 | 1 | -0/+1 |
| * | fix uninitialized variables in dns lookup code | Rich Felker | 2011-04-07 | 1 | -2/+2 |
| * | fix bug in TRE found by clang (typo && instead of &) | Rich Felker | 2011-04-07 | 1 | -1/+1 |
| * | fix misplaced *'s in string functions (harmless) | Rich Felker | 2011-04-07 | 3 | -3/+3 |
| * | fix broken unsigned comparison in wcstoumax | Rich Felker | 2011-04-07 | 1 | -1/+1 |
| * | fix breakage due to converting a return type to size_t in iconv... | Rich Felker | 2011-04-07 | 1 | -1/+1 |
| * | fixed crash in new rsyscall (failure to set sa_flags for signal handler) | Rich Felker | 2011-04-06 | 1 | -0/+2 |
| * | consistency: change all remaining syscalls to use SYS_ rather than __NR_ prefix | Rich Felker | 2011-04-06 | 38 | -40/+40 |
| * | move rsyscall out of pthread_create module•••this is something of a tradeoff, as now set*id() functions, rather
than pthread_create, are what pull in the code overhead for dealing
with linux's refusal to implement proper POSIX thread-vs-process
semantics. my motivations are:
1. it's cleaner this way, especially cleaner to optimize out the
rsyscall locking overhead from pthread_create when it's not needed.
2. it's expected that only a tiny number of core system programs will
ever use set*id() functions, whereas many programs may want to use
threads, and making thread overhead tiny is an incentive for "light"
programs to try threads.
| Rich Felker | 2011-04-06 | 10 | -109/+133 |
| * | pthread exit stuff: don't bother setting errno when we won't check it. | Rich Felker | 2011-04-06 | 1 | -2/+2 |
| * | fix rsyscall handler: must not clobber errno from signal context | Rich Felker | 2011-04-06 | 1 | -2/+4 |
| * | add startup abi functions, dummy for now. eventually needed for c++ support. | Rich Felker | 2011-04-06 | 2 | -0/+10 |
| * | add _res (__res_state()) dummy | Rich Felker | 2011-04-06 | 1 | -0/+9 |
| * | fix prototype for strsep | Rich Felker | 2011-04-06 | 1 | -0/+1 |
| * | fix completely bogus loop condition in getmntent_r•••somehow this worked on my simple fstab, but horribly broke in general,
leading to use of uninitialized offset array and crashes.
| Rich Felker | 2011-04-06 | 1 | -1/+1 |
| * | major semaphore improvements (performance and correctness)•••1. make sem_[timed]wait interruptible by signals, per POSIX
2. keep a waiter count in order to avoid unnecessary futex wake syscalls
| Rich Felker | 2011-04-06 | 5 | -21/+37 |
| * | fix signal-based timers with null sigevent argument•••since timer_create is no longer allocating a structure for the timer_t
and simply using the kernel timer id, it was impossible to specify the
timer_t as the argument to the signal handler. the solution is to pass
the null sigevent pointer on to the kernel, rather than filling it in
userspace, so that the kernel does the right thing. however, that
precludes the clever timerid-versus-threadid encoding we were doing.
instead, just assume timerids are below 1M and thread pointers are
above 1M. (in perspective: timerids are sequentially allocated and
seem limited to 32k, and thread pointers are at roughly 3G.)
| Rich Felker | 2011-04-06 | 5 | -28/+19 |
| * | fix incorrect (and conflicting on LP64 archs) types for sysv ipc msgq functions | Rich Felker | 2011-04-06 | 1 | -1/+1 |
| * | fix (hopefully) statvfs breakage on x86_64 that resulted from fixing i386... | Rich Felker | 2011-04-05 | 2 | -2/+10 |
