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[Bug libc/19505] Incorrect file descriptor validity checks in posix_spawn_file_actions_add{open,close,dup2}


https://sourceware.org/bugzilla/show_bug.cgi?id=19505

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https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=6793dd51d8e7d4f3408c183c6f7dc86acd7f1330

commit 6793dd51d8e7d4f3408c183c6f7dc86acd7f1330
Author: Florian Weimer <fweimer@redhat.com>
Date:   Fri Feb 19 14:49:38 2016 +0100

    Improve file descriptor checks for posix_spawn actions [BZ #19505]

-----------------------------------------------------------------------

Summary of changes:
 ChangeLog                                          |   17 ++
 posix/Makefile                                     |    5 +-
 posix/spawn_faction_addclose.c                     |    4 +-
 posix/spawn_faction_adddup2.c                      |    4 +-
 posix/spawn_faction_addopen.c                      |    5 +-
 posix/spawn_int.h                                  |   30 ++++
 .../fpu/fegetexcept.c => posix/spawn_valid_fd.c    |   21 ++--
 posix/tst-posix_spawn-fd.c                         |  165 ++++++++++++++++++++
 8 files changed, 229 insertions(+), 22 deletions(-)
 copy sysdeps/s390/fpu/fegetexcept.c => posix/spawn_valid_fd.c (71%)
 create mode 100644 posix/tst-posix_spawn-fd.c

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