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Third Party Musl

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Third Party Musl

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  1. 23 2月, 2018 25 次提交
  3. 22 2月, 2018 4 次提交
    • R
      update authors/contributors list · 1366b3c5
      由 Rich Felker 提交于 
      these additions were made by scanning git log since the last major
update in commit 790580b2. in addition
to git-level commit authorship, "patch by" text in the commit message
was also scanned. this idiom was used in the past for patches that
underwent substantial edits when merging or where the author did not
provide a commit message. going forward, my intent is to use commit
authorship consistently for attribution.

as before my aim was adding everyone with either substantial code
contributions or a pattern of ongoing simple patch submission; any
omissions are unintentional.
      1366b3c5
    • M
      fix detection of LIBCC for compiler-rt with clang · fcf24b9f
      由 Matúš Olekšák 提交于 
      Maintainer's note: at one point, -lcompiler_rt apparently worked, and
may still work and be preferable if one has manually installed the
library in a public lib directory. but with current versions of clang,
the full pathname to the library file is needed. the original patch
removed the -lcompiler_rt check; I have left it in place in case there
are users depending on it, and since, when it does work, it's
preferable so as not to code a dependency on the specific compiler
version and paths in config.mak.
      fcf24b9f
    • R
      convert execvp error handling to switch statement · 6d610242
      由 Rich Felker 提交于 
      this is more extensible if we need to consider additional errors, and
more efficient as long as the compiler does not know it can cache the
result of __errno_location (a surprisingly complex issue detailed in
commit a603a75a).
      6d610242
    • P
      fix execvp failing on not-dir entries in PATH. · 8e0b3806
      由 Przemyslaw Pawelczyk 提交于 
      It's better to make execvp continue PATH search on ENOTDIR rather than
issuing an error. Bogus entries should not render rest of PATH invalid.

Maintainer's note: POSIX seems to require the search to continue like
this as part of XBD 8.3 Other Environment Variables. Only errors that
conclusively determine non-existence are candidates for continuing;
otherwise for consistency we have to report the error.
      8e0b3806
  5. 12 2月, 2018 1 次提交
    • R
      fix incorrect overflow check for allocation in fmemopen · 75cba9c6
      由 Rich Felker 提交于 
      when a null buffer pointer is passed to fmemopen, requesting it
allocate its own memory buffer, extremely large size arguments near
SIZE_MAX could overflow and result in underallocation. this results
from omission of the size of the cookie structure in the overflow
check but inclusion of it in the calloc call.

instead of accounting for individual small contributions to the total
allocation size needed, simply reject sizes larger than PTRDIFF_MAX,
which will necessarily fail anyway. then adding arbitrary fixed-size
structures is safe without matching up the expressions in the
comparison and the allocation.
      75cba9c6
  7. 08 2月, 2018 4 次提交
    • S
      better configure check for long double support · 249b621f
      由 Szabolcs Nagy 提交于
      249b621f
    • D
      make getcwd fail if it cannot obtain an absolute path · 23ddab85
      由 Dmitry V. Levin 提交于 
      Currently getcwd(3) can succeed without returning an absolute path
because the underlying getcwd syscall, starting with linux commit
v2.6.36-rc1~96^2~2, may succeed without returning an absolute path.

This is a conformance issue because "The getcwd() function shall
place an absolute pathname of the current working directory
in the array pointed to by buf, and return buf".

Fix this by checking the path returned by syscall and failing with
ENOENT if the path is not absolute.  The error code is chosen for
consistency with the case when the current directory is unlinked.

Similar issue was fixed in glibc recently, see
https://sourceware.org/bugzilla/show_bug.cgi?id=22679
      23ddab85
    • R
      disallow non-absolute rpath $ORIGIN for suid/sgid/AT_SECURE processes · 376b3c54
      由 Rich Felker 提交于 
      in theory non-absolute origins can only arise when either the main
program is invoked by running ldso as a command (inherently non-suid)
or when dlopen was called with a relative pathname containing at least
one slash. such usage would be inherently insecure in an suid program
anyway, so the old behavior here does not seem to have been insecure.
harden against it anyway.
      376b3c54
    • R
      honor rpath $ORIGIN for ldd/ldso command with program in working dir · f0b235c1
      由 Rich Felker 提交于 
      the rpath fixup code assumed any module's name field would contain at
least one slash, an invariant which is usually met but not in the case
of a main executable loaded from the current working directory by
running ldd or ldso as a command. it would be possible to make this
invariant always hold, but it has a higher runtime allocation cost and
does not seem useful elsewhere, so just patch things up in fixup_rpath
instead.
      f0b235c1
  9. 07 2月, 2018 1 次提交
    • R
      adjust strftime + modifier to match apparent intent of POSIX · c7f0da41
      由 Rich Felker 提交于 
      it's unclear from the specification whether the word "consumes" in
"consumes more than four bytes to represent a year" refers just to
significant places or includes leading zeros due to field width
padding. however the examples in the rationale indicate that the
latter was the intent. in particular, the year 270 is shown being
formatted by %+5Y as +0270 rather than 00270.

previously '+' prefixing was implemented just by comparing the year
against 10000. instead, count the number of significant digits and
padding bytes to be added, and use the total to determine whether to
apply the '+' prefix.

based on testing by Dennis Wölfing.
      c7f0da41
  11. 06 2月, 2018 4 次提交
    • R
      fix strftime field widths with %F format and zero year · 596207aa
      由 Rich Felker 提交于 
      the code to strip initial sign and leading zeros inadvertently
stripped all the zeros and the subsequent '-' separating the month.
instead, only strip sign characters from the very first position, and
only strip zeros when they are followed by another digit.

based on testing by Dennis Wölfing.
      596207aa
    • R
      document pthread structure ABI constraints in comments · cc7c300d
      由 Rich Felker 提交于 
      in the original submission of the patch that became commit
7c709f2d, and in subsequent reading of
it by others, it was not clear that the new member had to be inserted
before canary_at_end, or that inserting it at that location was safe.
add comments to document.
      cc7c300d
    • A
      re-fix child reaping in wordexp · e53296f8
      由 Alexander Monakov 提交于 
      Do not retry waitpid if the child was terminated by a signal. Do not
examine status: since we are not passing any flags, we will not receive
stop or continue notifications.
      e53296f8
    • R
      revert regression in faccessat AT_EACCESS robustness · cd0ae687
      由 Rich Felker 提交于 
      commit f9fb20b4 switched from using a
pipe for the result to conveying it via the child process exit status.
Alexander Monakov pointed out that the latter could fail if the
application is not expecting faccessat to produce a child and performs
a wait operation with __WCLONE or __WALL, and that it is not clear
whether it's guaranteed to work when SIGCHLD's disposition has been
set to SIG_IGN.

in addition, that commit introduced a bug that caused EACCES to be
produced instead of EBUSY due to an exit path that was overlooked when
the error channel was changed, and introduced a spurious retry loop
around the wait operation.
      cd0ae687
  13. 03 2月, 2018 1 次提交