| Commit message (Expand) | Author | Age | Files | Lines |
|---|
| * | 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 |
| * | new framework to inhibit thread cancellation when needed•••with these small changes, libc functions which need to call functions
which are cancellation points, but which themselves must not be
cancellation points, can use the CANCELPT_INHIBIT and CANCELPT_RESUME
macros to temporarily inhibit all cancellation.
| Rich Felker | 2011-04-05 | 3 | -5/+17 |
| * | add sysv ipc message queues (completely untested) | Rich Felker | 2011-04-05 | 4 | -0/+58 |
| * | implement the adjtime and adjtimex functions (nonstandard) | Rich Felker | 2011-04-05 | 2 | -0/+34 |
| * | add getmntent_r interface (all of mntent is nonstandard anyway) | Rich Felker | 2011-04-05 | 1 | -12/+17 |
| * | implement if_indextoname and if_nametoindex functions | Rich Felker | 2011-04-05 | 2 | -0/+36 |
| * | add (nonstandard) cfmakeraw function | Rich Felker | 2011-04-05 | 1 | -0/+12 |
| * | add pivot_root syscall wrapper | Rich Felker | 2011-04-05 | 1 | -0/+6 |
| * | add more legacy functions: setlinebuf and setbuffer | Rich Felker | 2011-04-05 | 3 | -1/+15 |
| * | support the nonstandard err.h interfaces•••note that unlike the originals, these do not print the program
name/argv[0] because we have not saved it anywhere. this could be
changed in __libc_start_main if desired.
| Rich Felker | 2011-04-05 | 1 | -0/+60 |
| * | fix misaligned read on early string termination in strchr•••this could actually cause rare crashes in the case where a short
string is located at the end of a page and the following page is not
readable, and in fact this was seen in gcc compiling certain files.
| Rich Felker | 2011-04-05 | 1 | -1/+2 |
| * | fix overflow in printf %N$ argument handling | Rich Felker | 2011-04-05 | 1 | -2/+2 |
| * | fix various floating point rounding and formatting errors in *printf | Rich Felker | 2011-04-05 | 1 | -17/+25 |
| * | fix rare but nasty under-allocation bug in malloc with large requests•••the bug appeared only with requests roughly 2*sizeof(size_t) to
4*sizeof(size_t) bytes smaller than a multiple of the page size, and
only for requests large enough to be serviced by mmap instead of the
normal heap. it was only ever observed on 64-bit machines but
presumably could also affect 32-bit (albeit with a smaller window of
opportunity).
| Rich Felker | 2011-04-04 | 1 | -1/+1 |
| * | simplify vdprintf implementation greatly based on recent vfprintf changes•••since vfprintf will provide a temporary buffer in the case where the
target FILE has a zero buffer size, don't bother setting up a real
buffer for vdprintf. this also allows us to skip the call to fflush
since we know everything will be written out before vfprintf returns.
| Rich Felker | 2011-04-04 | 1 | -5/+2 |
| * | use a local temp buffer for unbuffered streams in vfprintf•••this change makes it so most calls to fprintf(stderr, ...) will result
in a single writev syscall, as opposed to roughly 2*N syscalls (and
possibly more) where N is the number of format specifiers. in
principle we could use a much larger buffer, but it's best not to
increase the stack requirements too much. most messages are under 80
chars.
| Rich Felker | 2011-04-04 | 2 | -0/+14 |
| * | fix nl_langinfo to actually use the existing, correct internal version | Rich Felker | 2011-04-03 | 2 | -15/+5 |
| * | make ualarm actually work (obsolete function removed from SUS) | Rich Felker | 2011-04-03 | 1 | -4/+9 |
| * | fix various bugs in strtold:•••0e10000000000000000000000000000000 was setting ERANGE
exponent char e/p was considered part of the match even if not
followed by a valid decimal value
"1e +10" was parsed as "1e+10"
hex digits were misinterpreted as 0..5 instead of 10..15
| Rich Felker | 2011-04-03 | 1 | -10/+13 |
| * | fix serious bug in strchr - char signedness•••search for bytes with high bit set was giving (potentially dangerous)
wrong results. i've tested, cleaned up, and hopefully sped up this
function now.
| Rich Felker | 2011-04-03 | 1 | -9/+11 |
| * | add setresuid/setresgid functions (nonstandard) | Rich Felker | 2011-04-03 | 2 | -0/+20 |
| * | pthread_create need not set errno | Rich Felker | 2011-04-03 | 1 | -1/+1 |
| * | fix statvfs syscalls (missing size argument) | Rich Felker | 2011-04-03 | 2 | -2/+2 |
| * | block all signals during rsyscall•••otherwise a signal handler could see an inconsistent and nonconformant
program state where different threads have different uids/gids.
| Rich Felker | 2011-04-03 | 1 | -4/+9 |
| * | fix race condition in rsyscall handler•••the problem: there is a (single-instruction) race condition window
between a thread flagging itself dead and decrementing itself from the
thread count. if it receives the rsyscall signal at this exact moment,
the rsyscall caller will never succeed in signalling enough flags to
succeed, and will deadlock forever. in previous versions of musl, the
about-to-terminate thread masked all signals prior to decrementing
the thread count, but this cost a whole syscall just to account for
extremely rare races.
the solution is a huge hack: rather than blocking in the signal
handler if the thread is dead, modify the signal mask of the saved
context and return in order to prevent further signal handling by the
dead thread. this allows the dead thread to continue decrementing the
thread count (if it had not yet done so) and exiting, even while the
live part of the program blocks for rsyscall.
| Rich Felker | 2011-04-03 | 1 | -1/+1 |
| * | don't trust siginfo in rsyscall handler•••for some inexplicable reason, linux allows the sender of realtime
signals to spoof its identity. permission checks for sending signals
should limit the impact to same-user processes, but just to be safe,
we avoid trusting the siginfo structure and instead simply examine the
program state to see if we're in the middle of a legitimate rsyscall.
| Rich Felker | 2011-04-03 | 1 | -3/+2 |
| * | timer threads should sleep and stay asleep... a long time | Rich Felker | 2011-04-03 | 1 | -1/+1 |
| * | revert to deleting kernel-level timer from cancellation handler•••this is necessary in order to avoid breaking timer_getoverrun in the
last run of the timer event handler, if it has not yet finished.
| Rich Felker | 2011-04-03 | 2 | -7/+11 |
| * | simplify calling of timer signal handler | Rich Felker | 2011-04-03 | 3 | -12/+6 |
| * | simplify pthread tsd key handling | Rich Felker | 2011-04-03 | 3 | -10/+7 |
| * | omit pthread tsd dtor code if tsd is not used | Rich Felker | 2011-04-03 | 2 | -14/+24 |
| * | don't disable seeking after first seek failure•••this could cause problems if the application uses dup2(fd,fileno(f))
to redirect, and the old fd was not seekable but the new fd is.
| Rich Felker | 2011-04-02 | 1 | -8/+0 |
