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Fix a few problems in fopen and freopen

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fopen should set the FD_CLOEXEC flag if requested evenif the kernel does
not support an aotmic operation.

freopen should reuse the file descriptor for the stream.  This is
especially important for calls to change the standard streams (stin,
stdout, stderr).
This commit is contained in:
Ulrich Drepper
2011-05-15 15:28:46 -04:00
parent bd25564e1e
commit 94b7cc3711
9 changed files with 143 additions and 39 deletions
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3
sysdeps/unix/sysv/linux/kernel-features.h
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@ -1,6 +1,6 @@
/* Set flags signalling availability of kernel features based on given
kernel version number.
Copyright (C) 1999-2009, 2010 Free Software Foundation, Inc.
Copyright (C) 1999-2009, 2010, 2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@ -496,6 +496,7 @@
# define __ASSUME_PIPE2 1
# define __ASSUME_EVENTFD2 1
# define __ASSUME_SIGNALFD4 1
# define __ASSUME_DUP3 1
#endif
/* Support for the accept4 syscall was added in 2.6.28. */