1. 11 11月, 2013 1 次提交
  2. 10 11月, 2013 1 次提交
    • R
      fix harmless inconsistency in semtimedop · 35cf8b3e
      Rich Felker 提交于
      this should not matter since the reality is that either all the sysv
      sem syscalls are individual syscalls, or all of them are multiplexed
      on the SYS_ipc syscall (depending on arch). but best to be consistent
      anyway.
      35cf8b3e
  3. 09 11月, 2013 4 次提交
    • R
      implement semtimedop · 4571f9f8
      Rich Felker 提交于
      this is a Linux-specific extension to the sysv semaphore api.
      4571f9f8
    • R
      adjust sys/wait.h not to produde errors in strict ISO C feature profile · f5980e33
      Rich Felker 提交于
      siginfo_t is not available from signal.h when the strict ISO C feature
      profile (e.g. passing -std=c99 to gcc without defining any other
      feature test macros) is used, but the type is needed to declare
      waitid. using sys/wait.h (or any POSIX headers) in strict ISO C mode
      is an application bug, but in the interest of compatibility, it's best
      to avoid producing gratuitous errors. the simplest fix I could find is
      suppressing the declaration of waitid (and also signal.h inclusion,
      since it's not needed for anything else) in this case, while still
      exposing everything else in sys/wait.h
      f5980e33
    • R
      remove O_NOFOLLOW from __map_file used for time zone file loading · 41a9ba25
      Rich Felker 提交于
      it's not clear why I originally wrote O_NOFOLLOW into this; I suspect
      the reason was with an aim of making the function more general for
      mapping partially or fully untrusted files provided by the user.
      however, the timezone code already precludes use of absolute or
      relative pathnames in suid/sgid programs, and disallows .. in
      pathnames which are relative to one of the system timezone locations,
      so there is no threat of opening a symlink which is not trusted by
      appropriate user. since some users may wish to put symbolic links in
      the zoneinfo directories to alias timezones, it seems preferable to
      allow this.
      41a9ba25
    • R
      fix handling of overly-long TZ environment variable values · 1d0d2df6
      Rich Felker 提交于
      the rest of the code is not prepared to handle an empty TZ string, so
      falling back to __gmt ("GMT"), just as if TZ had been blank or unset,
      is the preferable action.
      1d0d2df6
  4. 05 11月, 2013 1 次提交
  5. 04 11月, 2013 2 次提交
  6. 02 11月, 2013 3 次提交
  7. 31 10月, 2013 1 次提交
  8. 30 10月, 2013 1 次提交
  9. 29 10月, 2013 1 次提交
    • S
      fenv: fix i386 fesetround for sse · 7e01b8f0
      Szabolcs Nagy 提交于
      i386 fenv code checks __hwcap for sse support, but in fesetround the sse
      code was unconditionally jumped over after the test so the sse rounding
      mode was never set.
      7e01b8f0
  10. 28 10月, 2013 1 次提交
    • S
      math: extensive log*.c cleanup · 71d23b31
      Szabolcs Nagy 提交于
      The log, log2 and log10 functions share a lot of code and to a lesser
      extent log1p too. A small part of the code was kept separately in
      __log1p.h, but since it did not capture much of the common code and
      it was inlined anyway, it did not solve the issue properly. Now the
      log functions have significant code duplication, which may be resolved
      later, until then they need to be modified together.
      
      logl, log10l, log2l, log1pl:
      * Fix the sign when the return value should be -inf.
      * Remove the volatile hack from log10l (seems unnecessary)
      
      log1p, log1pf:
      * Change the handling of small inputs: only |x|<2^-53 is special
        (then it is enough to return x with the usual subnormal handling)
        this fixes the sign of log1p(0) in downward rounding.
      * Do not handle the k==0 case specially (other than skipping the
        elaborate argument reduction)
      * Do not handle 1+x close to power-of-two specially (this code was
        used rarely, did not give much speed up and the precision wasn't
        better than the general)
      * Fix the correction term formula (c=1-(u-x) was used incorrectly
        when x<1 but (double)(x+1)==2, this was not a critical issue)
      * Use the exact same method for calculating log(1+f) as in log
        (except in log1p the c correction term is added to the result).
      
      log, logf, log10, log10f, log2, log2f:
      * Use double_t and float_t consistently.
      * Now the first part of log10 and log2 is identical to log (until the
        return statement, hopefully this makes maintainence easier).
      * Most special case formulas were removed (close to power-of-two and
        k==0 cases), they increase the code size without providing precision
        or performance benefits (and obfuscate the code).
        Only x==1 is handled specially so in downward rounding mode the
        sign of zero is correct (the general formula happens to give -0).
      * For x==0 instead of -1/0.0 or -two54/0.0, return -1/(x*x) to force
        raising the exception at runtime.
      * Arg reduction code is changed (slightly simplified)
      * The thresholds for arg reduction to [sqrt(2)/2,sqrt(2)] are now
        consistently the [0x3fe6a09e00000000,0x3ff6a09dffffffff] and the
        [0x3f3504f3,0x3fb504f2] intervals for double and float reductions
        respectively (the exact threshold values are not critical)
      * Remove the obsolete comment for the FLT_EVAL_METHOD!=0 case in log2f
        (The same code is used for all eval methods now, on i386 slightly
        simpler code could be used, but we have asm there anyway)
      
      all:
      * Fix signed int arithmetics (using unsigned for bitmanipulation)
      * Fix various comments
      71d23b31
  11. 26 10月, 2013 1 次提交
    • R
      add legacy ftime function and sys/timeb.h · 4b15d9f4
      Rich Felker 提交于
      despite being marked legacy, this was specified by SUSv3 as part of
      the XSI option; only the most recent version of the standard dropped
      it. reportedly there's actual code using it.
      4b15d9f4
  12. 23 10月, 2013 1 次提交
    • S
      fix inet_pton · 78f88915
      Szabolcs Nagy 提交于
      * parse IPv4 dotted-decimal correctly (without strtoul, no leading zeros)
      * disallow single leading ':' in IPv6 address
      * allow at most 4 hex digits in IPv6 address (according to RFC 2373)
      * have enough hex fields in IPv4 mapped IPv6 address
      * disallow leading zeros in IPv4 mapped IPv6 address
      78f88915
  13. 22 10月, 2013 3 次提交
  14. 21 10月, 2013 1 次提交
    • R
      fix multiple minor namespace issues in headers · 8f035960
      Rich Felker 提交于
      fcntl.h: AT_* is not a reserved namespace so extensions cannot be
      exposed by default.
      
      langinfo.h: YESSTR and NOSTR were removed from the standard.
      
      limits.h: NL_NMAX was removed from the standard.
      
      signal.h: the conditional for NSIG was wrongly checking _XOPEN_SOURCE
      rather than _BSD_SOURCE. this was purely a mistake; it doesn't even
      match the commit message from the commit that added it.
      8f035960
  15. 20 10月, 2013 1 次提交
  16. 18 10月, 2013 3 次提交
  17. 13 10月, 2013 1 次提交
    • R
      fix uid/gid-setting error in faccessat with AT_EACCESS flag · 51635856
      Rich Felker 提交于
      this fixes an issue reported by Daniel Thau whereby faccessat with the
      AT_EACCESS flag did not work in cases where the process is running
      suid or sgid but without root privileges. per POSIX, when the process
      does not have "appropriate privileges", setuid changes the euid, not
      the real uid, and the target uid must be equal to the current real or
      saved uid; if this condition is not met, EPERM results. this caused
      the faccessat child process to fail.
      
      using the setreuid syscall rather than setuid works. POSIX leaves it
      unspecified whether setreuid can set the real user id to the effective
      user id on processes without "appropriate privileges", but Linux
      allows this; if it's not allowed, there would be no way for this
      function to work.
      51635856
  18. 09 10月, 2013 1 次提交
    • R
      fix errno value for getcwd when size argument is zero · 4fb7df12
      Rich Felker 提交于
      based on patch by Michael Forney. at the same time, I've changed the
      if branch to be more clear, avoiding the comma operator.
      
      the underlying issue is that Linux always returns ERANGE when size is
      too short, even when it's zero, rather than returning EINVAL for the
      special case of zero as required by POSIX.
      4fb7df12
  19. 08 10月, 2013 2 次提交
  20. 07 10月, 2013 5 次提交
  21. 06 10月, 2013 2 次提交
    • S
      math: remove an unused variable from modfl · b9cd1d4d
      Szabolcs Nagy 提交于
      b9cd1d4d
    • R
      slightly optimize __brk for size · 8acbe4f8
      Rich Felker 提交于
      there is no reason to check the return value for setting errno, since
      brk never returns errors, only the new value of the brk (which may be
      the same as the old, or otherwise differ from the requested brk, on
      failure).
      
      it may be beneficial to eventually just eliminate this file and make
      the syscalls inline in malloc.c.
      8acbe4f8
  22. 05 10月, 2013 3 次提交